CN108193027A - A kind of method of high efficiency working hot-rolled strip - Google Patents
A kind of method of high efficiency working hot-rolled strip Download PDFInfo
- Publication number
- CN108193027A CN108193027A CN201711460188.8A CN201711460188A CN108193027A CN 108193027 A CN108193027 A CN 108193027A CN 201711460188 A CN201711460188 A CN 201711460188A CN 108193027 A CN108193027 A CN 108193027A
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- temperature
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- warming
- roll bending
- pickling
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000013000 roll bending Methods 0.000 claims abstract description 137
- 238000005096 rolling process Methods 0.000 claims abstract description 95
- 238000005554 pickling Methods 0.000 claims abstract description 74
- 238000010008 shearing Methods 0.000 claims abstract description 52
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- 238000004806 packaging method and process Methods 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000000137 annealing Methods 0.000 claims description 185
- 238000010792 warming Methods 0.000 claims description 123
- 238000001816 cooling Methods 0.000 claims description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 22
- 230000009849 deactivation Effects 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 17
- 238000006386 neutralization reaction Methods 0.000 claims description 14
- 229910021529 ammonia Inorganic materials 0.000 claims description 11
- 230000006378 damage Effects 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000012797 qualification Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005474 detonation Methods 0.000 claims description 4
- 238000002474 experimental method Methods 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 6
- 206010039509 Scab Diseases 0.000 description 6
- 238000005098 hot rolling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to a kind of methods of high efficiency working hot-rolled strip, include the following steps：Choose the hot-rolled coil that the trade mark is BJS15C；First time longitudinal shearing slitting is carried out using the first big splitting production line, slitting roll bending is made；The slitting roll bending that first time longitudinal shearing slitting is obtained carries out pickling, and pickling roll bending is made；The pickling roll bending that pickling obtains is rolled, and rolling roll bending is made；Rolling rolling roll bending is subjected to spheroidizing, and spheroidizing roll bending is made；The spheroidizing roll bending that spheroidizing is obtained carries out finish rolling, and finish rolling roll bending is made；The finish rolling roll bending that finish rolling is obtained carries out second of longitudinal shearing slitting, and slitting roll bending is made；Packaging and storage.The beneficial effects of the invention are as follows：Can stabilized product quality, raise labour productivity.
Description
Technical field
The present invention relates to strip production and processing technical field more particularly to a kind of methods of high efficiency working hot-rolled strip.
Background technology
It is well known that strip is a kind of narrow and long steel plate in order to adapt to different industrial department needs and production.Strip
Coiled supply has many advantages, such as that dimensional accuracy is high, surface quality is good, easy to process, saving material, is widely used in production welding steel
Pipe, makees the fields such as the blank of cold-rolled forming section.
It is influenced by the method for current working hot-rolled strip, the strip quality produced is not sufficiently stable, and is being produced
Easily occur defective work in the process, lead to entire production efficiency than relatively low.
Invention content
The technical problems to be solved by the invention be to provide it is a kind of can stabilized product quality, raise labour productivity plus
The method of work hot-strip.
The technical solution that the present invention solves above-mentioned technical problem is as follows：A kind of method of high efficiency working hot-rolled strip, packet
Include following steps：
Step 1: it prepares raw material, choose the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains be transported to pickling by row device for hoisting producing
Pickling is carried out on line, and pickling roll bending is made；
Step 4: it rolls, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made；
Step 5: spheroidizing, rolling rolling roll bending is transported to annealing furnace/ammonia destruction furnace by row device for hoisting
Interior carry out spheroidizing is warming up to 260 DEG C, and keep the temperature 0.5h-3h after being warming up to 260 DEG C at full speed first, by annealing furnace,
After secondary, annealing furnace keeps the temperature 0.5h-3h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1h-4h, and be warming up to
1h-3h is kept the temperature after 400 DEG C, again, after annealing furnace keeps the temperature 1h-3h at a temperature of 400 DEG C, annealing furnace is heated up in 1h-4h
To 580 DEG C, and 0.5h-3h is kept the temperature after being warming up to 580 DEG C, the 4th, after annealing furnace keeps the temperature 0.5h-3h at a temperature of 580 DEG C,
Annealing furnace in 1h-4h is warming up to 670 DEG C, and 0.5h-3h is kept the temperature after being warming up to 670 DEG C, the 5th, annealing furnace is at 670 DEG C
At a temperature of keep the temperature 0.5h-3h after, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1h-4h, and be warming up to 680 DEG C extremely
Keep the temperature 8h-16h after 700 DEG C, the 6th, after annealing furnace keeps the temperature 8h-16h at a temperature of 680 DEG C to 700 DEG C, using furnace cooling
Mode the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C, the 7th, by the way of furnace cooling by annealing furnace
Temperature be down to 600 DEG C after, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 DEG C by 600 DEG C, the 8th,
The temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, finally, is gone out
Spheroidizing roll bending is made in stove；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains by row device for hoisting being transported to and rolls production line
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using baling press, to second of longitudinal shearing slitting, obtained slitting roll bending carries out packing packet
Dress.
The beneficial effects of the invention are as follows：By to rolling roll bending carry out spheroidizing when, by entire spheroidizing process
Several stages are divided into, and effectively control heating-up time, soaking time and the temperature in each stage in each stage, so as to
So that the product quality produced is stablized, product qualification rate gets a promotion, so as to further improve labor productivity.
Based on the above technical solution, the present invention can also be improved as follows.
Further, in the step 3, when carrying out pickling, the minus tolerance of the thickness before and after soft annealing roll bending pickling is less than
0.15mm, the quantity of descaling bath are two, and the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, two descaling baths
Pickling concentration is respectively 18%-22%, 15%-18%, and the sour position in two descaling baths is 380mm to 420mm, and acid liquor temperature is
53 DEG C to 72 DEG C, the pH value of neutralization chamber is 11 to 13, and the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51
DEG C, the cleaning speed of pickling lines is 5m/min to 15m/min.
It is using above-mentioned further advantageous effect：The oxidation that roll bending generates during soft annealing can be effectively removed
Skin avoids influencing following process.
Further, in the step 5, in spheroidizing, annealing furnace is warming up to 260 DEG C, and be warming up at full speed
0.6h-1.4h is kept the temperature after 260 DEG C；After annealing furnace keeps the temperature 0.6h-1.4h at a temperature of 260 DEG C, by annealing furnace in 1.2h-3.5h
400 DEG C are inside warming up to, and 1.2h-2.5h is kept the temperature after being warming up to 400 DEG C；Annealing furnace keeps the temperature 1.2h- at a temperature of 400 DEG C
After 2.5h, annealing furnace is warming up to 580 DEG C in 1.2h-3.5h, and 0.6h-1.4h is kept the temperature after being warming up to 580 DEG C；Annealing furnace
After 0.6h-1.4h is kept the temperature at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 1.2h-3.5h, and be warming up to 670
0.6h-1.4h is kept the temperature after DEG C；After annealing furnace keeps the temperature 0.6h-1.4h at a temperature of 670 DEG C, by annealing furnace in 1.2h-3.5h
680 DEG C to 700 DEG C are warming up to, and 9h-15h is kept the temperature after being warming up to 680 DEG C to 700 DEG C；Annealing furnace is at 680 DEG C to 700 DEG C
At a temperature of heat preservation 9h-15h after, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling.
Further, in spheroidizing, annealing furnace is warming up to 260 DEG C, and kept the temperature after being warming up to 260 DEG C at full speed
0.8h-1.2h；After annealing furnace keeps the temperature 0.8h-1.2h at a temperature of 260 DEG C, annealing furnace is warming up to 400 in 1.6h-2.5h
DEG C, and keep the temperature 1.5h-2.2h after being warming up to 400 DEG C；After annealing furnace keeps the temperature 1.5h-2.2h at a temperature of 400 DEG C, it will anneal
Stove is warming up to 580 DEG C in 1.6h-2.5h, and keeps the temperature 0.8h-1.2h after being warming up to 580 DEG C；Temperature of the annealing furnace at 580 DEG C
After lower heat preservation 0.8h-1.2h, annealing furnace is warming up to 670 DEG C in 1.6h-2.5h, and 0.8h- is kept the temperature after being warming up to 670 DEG C
1.2h；After annealing furnace keeps the temperature 0.8h-1.2h at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C extremely in 1.6h-2.5h
700 DEG C, and keep the temperature 11h-13h after being warming up to 680 DEG C to 700 DEG C；Annealing furnace is kept the temperature at a temperature of 680 DEG C to 700 DEG C
After 11h-13h, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling.
Further, in spheroidizing, annealing furnace is warming up to 260 DEG C, and keep the temperature 1h after being warming up to 260 DEG C at full speed；
After annealing furnace keeps the temperature 1h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 2h, and kept the temperature after being warming up to 400 DEG C
2h；After annealing furnace keeps the temperature 2h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 2h, and after being warming up to 580 DEG C
Keep the temperature 1h；After annealing furnace keeps the temperature 1h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 2h, and be warming up to 670
1h is kept the temperature after DEG C；After annealing furnace keeps the temperature 1h at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C to 700 DEG C in 2h, and
12h is kept the temperature after being warming up to 680 DEG C to 700 DEG C；After annealing furnace keeps the temperature 12h at a temperature of 680 DEG C to 700 DEG C, using with stove
The temperature of annealing furnace is down to 600 DEG C by the mode of cooling by 680 DEG C to 700 DEG C.
Further, it in spheroidizing, needs to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace；
In entire heating and insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C.
Further, in entire heating and insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C.
It is using above-mentioned further advantageous effect：It can effectively ensure the stability of spheroidizing roll bending quality.
It further,, need to be first with metallographic microscope to the ball of soft annealing roll bending before finish rolling is carried out in the step 6
Rate is detected, and carries out finish rolling by qualified annealing roll bending is detected.
It further,, need to be first with universal testing machine and hardometer before second of longitudinal shearing slitting is carried out in the step 8
The hardness of finish rolling roll bending is detected, and acceptability limit Wei≤160HV of the hardness number of finish rolling roll bending.
Further, acceptability limit Wei≤140HV of the hardness number of finish rolling roll bending.
It is using above-mentioned further advantageous effect：The parameter in production technology can be adjusted in time according to detection data
Value, it is ensured that the quality of production.
Description of the drawings
Curve graphs of the Fig. 1 for spheroidizing in the method for working hot-rolled strip of the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Embodiment one：As shown in Figure 1, a kind of method of high efficiency working hot-rolled strip, includes the following steps：
Step 1: it prepares raw material, choose the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains be transported to pickling by row device for hoisting producing
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: it rolls, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein, the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending is transported to annealing furnace/ammonia destruction furnace by row device for hoisting
Interior carry out spheroidizing is warming up to 260 DEG C, and keep the temperature 0.5h after being warming up to 260 DEG C at full speed first, by annealing furnace, secondly, moves back
After stove keeps the temperature 0.5h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1h, and kept the temperature after being warming up to 400 DEG C
Annealing furnace again, after annealing furnace keeps the temperature 1h at a temperature of 400 DEG C, is warming up to 580 DEG C, and be warming up to 580 by 1h in 1h
Keep the temperature 0.5h after DEG C, the 4th, after annealing furnace keeps the temperature 0.5h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 1h,
And 0.5h is kept the temperature after being warming up to 670 DEG C, and the 5th, after annealing furnace keeps the temperature 0.5h at a temperature of 670 DEG C, by annealing furnace in 1h
680 DEG C to 700 DEG C are warming up to, and 8h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, the 6th, annealing furnace is at 680 DEG C to 700 DEG C
At a temperature of after heat preservation 8h, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling, the 7th,
After the temperature of annealing furnace is down to 600 DEG C by the way of furnace cooling, it is air-cooled to annealing furnace change cover, and by annealing furnace
Temperature be down to 280 DEG C by 600 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by annealing furnace
Temperature is down to 80 DEG C by 280 DEG C, finally, comes out of the stove, and spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains by row device for hoisting being transported to and rolls production line
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using baling press, to second of longitudinal shearing slitting, obtained slitting roll bending carries out packing packet
Dress.
Embodiment two：As shown in Figure 1, a kind of method of high efficiency working hot-rolled strip, includes the following steps：
Step 1: it prepares raw material, choose the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains be transported to pickling by row device for hoisting producing
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: it rolls, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein, the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending is transported to annealing furnace/ammonia destruction furnace by row device for hoisting
Interior carry out spheroidizing is warming up to 260 DEG C, and keep the temperature 0.8h after being warming up to 260 DEG C at full speed first, by annealing furnace, secondly, moves back
After stove keeps the temperature 0.8h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1.6h, and protected after being warming up to 400 DEG C
Annealing furnace again, after annealing furnace keeps the temperature 1.5h at a temperature of 400 DEG C, is warming up to 580 DEG C by warm 1.5h in 1.6h, and
Keep the temperature 0.8h after being warming up to 580 DEG C, the 4th, after annealing furnace keeps the temperature 0.8h at a temperature of 580 DEG C, annealing furnace is risen in 1.6h
Temperature keeps the temperature 0.8h to 670 DEG C after being warming up to 670 DEG C, and the 5th, after annealing furnace keeps the temperature 0.8h at a temperature of 670 DEG C, will move back
Stove is warming up to 680 DEG C to 700 DEG C in 1.6h, and 11h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, and the 6th, annealing furnace exists
After keeping the temperature 11h at a temperature of 680 DEG C to 700 DEG C, by the temperature of annealing furnace by 680 DEG C to 700 DEG C by the way of furnace cooling
It is down to 600 DEG C, the 7th, after the temperature of annealing furnace is down to 600 DEG C by the way of furnace cooling, annealing furnace is carried out to change cover
It is air-cooled, and the temperature of annealing furnace is down to 280 DEG C by 600 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, using water cooling
The temperature of annealing furnace is down to 80 DEG C by mode by 280 DEG C, finally, is come out of the stove, and spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains by row device for hoisting being transported to and rolls production line
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using baling press, to second of longitudinal shearing slitting, obtained slitting roll bending carries out packing packet
Dress.
Embodiment three：As shown in Figure 1, a kind of method of high efficiency working hot-rolled strip, includes the following steps：
Step 1: it prepares raw material, choose the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains be transported to pickling by row device for hoisting producing
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: it rolls, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein, the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending is transported to annealing furnace/ammonia destruction furnace by row device for hoisting
Interior carry out spheroidizing is warming up to 260 DEG C, and keep the temperature 1.2h after being warming up to 260 DEG C at full speed first, by annealing furnace, secondly, moves back
After stove keeps the temperature 1.2h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 2.5h, and protected after being warming up to 400 DEG C
Annealing furnace again, after annealing furnace keeps the temperature 2.2h at a temperature of 400 DEG C, is warming up to 580 DEG C by warm 2.2h in 2.5h, and
Keep the temperature 1.2h after being warming up to 580 DEG C, the 4th, after annealing furnace keeps the temperature 1.2h at a temperature of 580 DEG C, annealing furnace is risen in 2.5h
Temperature keeps the temperature 1.2h to 670 DEG C after being warming up to 670 DEG C, and the 5th, after annealing furnace keeps the temperature 1.2h at a temperature of 670 DEG C, will move back
Stove is warming up to 680 DEG C to 700 DEG C in 2.5h, and 13h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, and the 6th, annealing furnace exists
After keeping the temperature 13h at a temperature of 680 DEG C to 700 DEG C, by the temperature of annealing furnace by 680 DEG C to 700 DEG C by the way of furnace cooling
It is down to 600 DEG C, the 7th, after the temperature of annealing furnace is down to 600 DEG C by the way of furnace cooling, annealing furnace is carried out to change cover
It is air-cooled, and the temperature of annealing furnace is down to 280 DEG C by 600 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, using water cooling
The temperature of annealing furnace is down to 80 DEG C by mode by 280 DEG C, finally, is come out of the stove, and spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains by row device for hoisting being transported to and rolls production line
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using baling press, to second of longitudinal shearing slitting, obtained slitting roll bending carries out packing packet
Dress.
Example IV：As shown in Figure 1, a kind of method of high efficiency working hot-rolled strip, includes the following steps：
Step 1: it prepares raw material, choose the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains be transported to pickling by row device for hoisting producing
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: it rolls, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein, the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending is transported to annealing furnace/ammonia destruction furnace by row device for hoisting
Interior carry out spheroidizing is warming up to 260 DEG C, and keep the temperature 3h after being warming up to 260 DEG C at full speed first, by annealing furnace, secondly, anneals
After stove keeps the temperature 3h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 4h, and 3h is kept the temperature after being warming up to 400 DEG C,
Again, after annealing furnace keeps the temperature 3h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 4h, and be warming up to 580 DEG C
After keep the temperature 3h, the 4th, after annealing furnace keeps the temperature 3h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 4h, and rising
Temperature is to keeping the temperature 3h after 670 DEG C, and the 5th, after annealing furnace keeps the temperature 3h at a temperature of 670 DEG C, annealing furnace is warming up to 680 in 4h
DEG C to 700 DEG C, and 16h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, the 6th, annealing furnace protects at a temperature of 680 DEG C to 700 DEG C
After warm 16h, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling, the 7th, using with
After the temperature of annealing furnace is down to 600 DEG C by the mode of furnace cooling but, to annealing furnace change that cover is air-cooled, and by the temperature of annealing furnace by
600 DEG C are down to 280 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by the temperature of annealing furnace by
280 DEG C are down to 80 DEG C, finally, are come out of the stove, and spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains by row device for hoisting being transported to and rolls production line
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using baling press, to second of longitudinal shearing slitting, obtained slitting roll bending carries out packing packet
Dress.
Embodiment five：As shown in Figure 1, a kind of method of high efficiency working hot-rolled strip, includes the following steps：
Step 1: it prepares raw material, choose the hot-rolled coil that the trade mark is BJS15C；
Step 2: first time longitudinal shearing slitting, the hot-rolled coil got ready in step 1 is transported to first by row device for hoisting
First time longitudinal shearing slitting is carried out on big splitting production line, is processed in order to facilitate subsequent handling, hot-rolled coil is in slitting, width side
To the surplus of reserved 0.5mm or so, the thickness tolerance of hot-rolled coil should meet the regulation of GB/T709, convexity requirement：Thickness
Less than or equal to 3.0mm, convexity is less than or equal to 40 μm；Thickness is 3mm to 8.0mm, and convexity is less than or equal to 60 μm, and thickness is more than
8.0mm, convexity are less than or equal to 100 μm, and hot-rolled coil surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, hot rolling
Roll bending must not have a layering, and surface allows to have the deep point of slight point and part within thickness deviation range half, minute bubbles, light
Micro- scuffing and roll impression；Hot-rolled coil neat in edge, without zigzag, and in slitting blade datum end face bounce should be small
In equal to 0.06mm, and slitting roll bending is made；
Step 3: pickling, slitting roll bending that first time longitudinal shearing slitting obtains be transported to pickling by row device for hoisting producing
Pickling is carried out on line, and in pickling, the minus tolerance of the thickness before and after roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two
A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%,
15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber
It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is
Pickling roll bending is made to 15m/min in 5m/min；
Step 4: it rolls, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill and is rolled
System, and rolling roll bending is made, wherein, the thickness for rolling roll bending is 4mm to 5mm；
Step 5: spheroidizing, rolling rolling roll bending is transported to annealing furnace/ammonia destruction furnace by row device for hoisting
Interior carry out spheroidizing is warming up to 260 DEG C, and keep the temperature 1h after being warming up to 260 DEG C at full speed first, by annealing furnace, secondly, anneals
After stove keeps the temperature 1h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 2h, and 2h is kept the temperature after being warming up to 400 DEG C,
Again, after annealing furnace keeps the temperature 2h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 2h, and be warming up to 580 DEG C
After keep the temperature 1h, the 4th, after annealing furnace keeps the temperature 1h at a temperature of 580 DEG C, annealing furnace is warming up to 670 DEG C in 2h, and rising
Temperature is to keeping the temperature 1h after 670 DEG C, and the 5th, after annealing furnace keeps the temperature 1h at a temperature of 670 DEG C, annealing furnace is warming up to 680 in 2h
DEG C to 700 DEG C, and 12h is kept the temperature after being warming up to 680 DEG C to 700 DEG C, the 6th, annealing furnace protects at a temperature of 680 DEG C to 700 DEG C
After warm 12h, the temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C by the way of furnace cooling, the 7th, using with
After the temperature of annealing furnace is down to 600 DEG C by the mode of furnace cooling but, to annealing furnace change that cover is air-cooled, and by the temperature of annealing furnace by
600 DEG C are down to 280 DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, by the temperature of annealing furnace by
280 DEG C are down to 80 DEG C, finally, are come out of the stove, and spheroidizing roll bending is made；
Step 6: finish rolling, the spheroidizing roll bending that spheroidizing obtains by row device for hoisting being transported to and rolls production line
Upper carry out finish rolling, and finish rolling roll bending is made；
Step 7: second of longitudinal shearing slitting, the finish rolling roll bending that finish rolling obtains is transported to small banding machine by row device for hoisting
Second of longitudinal shearing slitting of upper progress, and slitting roll bending is made；
Step 8: packaging and storage, using baling press, to second of longitudinal shearing slitting, obtained slitting roll bending carries out packing packet
Dress.
In the present invention, it is preferred to the technical solution of embodiment five, according to the thickness of corresponding rolling roll bending, is formulated specific
The operating process of spheroidizing, so as to effectively control the stability for the product quality produced and the performance of product, when
When the thickness of rolling roll bending changes, the operating process of spheroidizing is also required to change.
It needs to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace；It heats up and kept the temperature entirely
Cheng Zhong, the difference of actual temperature value and process warm angle value are less than 15 DEG C.
Before finish rolling is carried out, the Oxygen potential of soft annealing roll bending need to be detected first with metallographic microscope, and will inspection
It surveys qualified annealing roll bending and carries out finish rolling.
Before second of longitudinal shearing slitting is carried out, the hardness of finish rolling roll bending need to be carried out first with universal testing machine and hardometer
Detection, and acceptability limit Wei≤140HV of the hardness number of finish rolling roll bending after hardness determination qualification, carry out finish rolling roll bending
Metallographic detects, and wherein metallographic testing result information only refers to, and hardness qualification treats as metallographic qualification.
It in spheroidizing, needs to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace；Entirely rising
In temperature and insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C, and actual temperature value is measured by thermocouple, inspection
The frequency of survey is 1 time/1h, in addition, can suitably increase heat preservation platform in temperature-rise period, to meet theoretical raising speed.
When carrying out second of longitudinal shearing slitting need on slitting roll bending antirust oil；When carrying out the second longitudinal shearing slitting, hot rolling
Roll bending surface must not have bubble, crackle, scab, stick up skin, drawing crack and be mingled with, and hot-rolled coil must not have layering, and surface allows have thickness
Spend the deep point of slight point and part, minute bubbles, slight scuffing and the roll impression within margin of tolerance half；Hot rolled coil edges of boards
Edge is neat, without zigzag, and the bounce of blade datum end face should be less than or equal to 0.06mm.
When being rolled, obtained rolling roll bending surface is without sticking up skin, pit, point, yellow rust, scale, scuffing, template
It is straight；Edge：Without plucking, broken side.The surface of slitting roll bending that second of longitudinal shearing slitting obtains is without sticking up skin, point, pit, water
Rust, scuffing, yellow rust, coining, plate shape is straight, edge is without broken side；It is needed when carrying out second of longitudinal shearing slitting toward on slitting roll bending
Antirust oil.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
- A kind of 1. method of high efficiency working hot-rolled strip, which is characterized in that include the following steps：Step 1: it prepares raw material, choose the hot-rolled coil that the trade mark is BJS15C；Step 2: first time longitudinal shearing slitting, that by row device for hoisting the hot-rolled coil got ready in step 1 is transported to first is big vertical Progress first time longitudinal shearing slitting on production line is cut, and slitting roll bending is made；Step 3: pickling, the slitting roll bending that first time longitudinal shearing slitting obtains is transported to by row device for hoisting on pickling lines Pickling is carried out, and pickling roll bending is made；Step 4: rolling, the pickling roll bending that pickling obtains is transported to by row device for hoisting on production line of rolling mill rolls, and Rolling roll bending is made；Step 5: spheroidizing, by rolling rolling roll bending by row device for hoisting be transported in annealing furnace/ammonia destruction furnace into Row spheroidizing is warming up to 260 DEG C, and keep the temperature 0.8h-3h after being warming up to 260 DEG C at full speed first, by annealing furnace, secondly, moves back After stove keeps the temperature 0.8h-3h at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1.6h-4h, and be warming up to 400 1.5h-3h is kept the temperature after DEG C, again, after annealing furnace keeps the temperature 1.5h-3h at a temperature of 400 DEG C, annealing furnace is risen in 1.6h-4h Temperature keeps the temperature 0.8h-3h to 580 DEG C after being warming up to 580 DEG C, the 4th, annealing furnace keep the temperature 0.8h-3h at a temperature of 580 DEG C Afterwards, annealing furnace in 1.6h-4h is warming up to 670 DEG C, and 0.5h-0.8h is kept the temperature after being warming up to 670 DEG C, the 5th, annealing furnace After 0.5h-0.8h is kept the temperature at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1h-4h, and be warming up to Keep the temperature 8h-16h after 680 DEG C to 700 DEG C, the 6th, after annealing furnace keeps the temperature 8h-16h at a temperature of 680 DEG C to 700 DEG C, using with The temperature of annealing furnace is down to 600 DEG C by the mode of furnace cooling but by 680 DEG C to 700 DEG C, and the 7th, will by the way of furnace cooling After the temperature of annealing furnace is down to 600 DEG C, to annealing furnace change that cover is air-cooled, and the temperature of annealing furnace is down to 280 by 600 DEG C DEG C, the 8th, the temperature of annealing furnace is down to 280 DEG C, by the way of water cooling, the temperature of annealing furnace is down to 80 DEG C by 280 DEG C, Finally, it comes out of the stove, spheroidizing roll bending is made；Step 6: finish rolling, spheroidizing roll bending that spheroidizing obtains to be transported to by row device for hoisting to roll production line enterprising Row finish rolling, and finish rolling roll bending is made；Step 7: second of longitudinal shearing slitting, that by row device for hoisting finish rolling roll bending that finish rolling obtains is transported to small banding machine is enterprising Second of longitudinal shearing slitting of row, and slitting roll bending is made；Step 8: packaging and storage, using baling press, to second of longitudinal shearing slitting, obtained slitting roll bending carries out packing packaging.
- A kind of 2. method of high efficiency working hot-rolled strip according to claim 1, which is characterized in that the step 3 In, when carrying out pickling, the minus tolerance of the thickness before and after soft annealing roll bending pickling is less than 0.15mm, and the quantity of descaling bath is two A, the quantity of deactivation slot is one, and the quantity of neutralization chamber is one, the pickling concentration of two descaling baths be respectively 18%-22%, 15%-18%, the sour position in two descaling baths are 380mm to 420mm, and acid liquor temperature is 53 DEG C to 72 DEG C, the pH value of neutralization chamber It is 11 to 13, the pH value of deactivation slot is 7 to 8, and the temperature value of deactivation slot is 38 DEG C to 51 DEG C, and the cleaning speed of pickling lines is 5m/min to 15m/min.
- A kind of 3. method of high efficiency working hot-rolled strip according to claim 1, which is characterized in that the step 5 In, in spheroidizing, annealing furnace is warming up to 260 DEG C, and keep the temperature 0.6h-1.4h after being warming up to 260 DEG C at full speed；Annealing furnace After 0.6h-1.4h is kept the temperature at a temperature of 260 DEG C, annealing furnace is warming up to 400 DEG C in 1.2h-3.5h, and be warming up to 400 1.2h-2.5h is kept the temperature after DEG C；After annealing furnace keeps the temperature 1.2h-2.5h at a temperature of 400 DEG C, by annealing furnace in 1.2h-3.5h 580 DEG C are warming up to, and 0.6h-1.4h is kept the temperature after being warming up to 580 DEG C；Annealing furnace keeps the temperature 0.6h-1.4h at a temperature of 580 DEG C Afterwards, annealing furnace in 1.2h-3.5h is warming up to 670 DEG C, and 0.6h-1.4h is kept the temperature after being warming up to 670 DEG C；Annealing furnace exists After keeping the temperature 0.6h-1.4h at a temperature of 670 DEG C, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1.2h-3.5h, and heating up 9h-15h is kept the temperature after to 680 DEG C to 700 DEG C；After annealing furnace keeps the temperature 9h-15h at a temperature of 680 DEG C to 700 DEG C, using with stove The temperature of annealing furnace is down to 600 DEG C by the mode of cooling by 680 DEG C to 700 DEG C.
- 4. the method for a kind of high efficiency working hot-rolled strip according to claim 3, which is characterized in that in spheroidizing When, annealing furnace is warming up to 260 DEG C, and keep the temperature 0.8h-1.2h after being warming up to 260 DEG C at full speed；Temperature of the annealing furnace at 260 DEG C After lower heat preservation 0.8h-1.2h, annealing furnace is warming up to 400 DEG C in 1.6h-2.5h, and 1.5h- is kept the temperature after being warming up to 400 DEG C 2.2h；After annealing furnace keeps the temperature 1.5h-2.2h at a temperature of 400 DEG C, annealing furnace is warming up to 580 DEG C in 1.6h-2.5h, and 0.8h-1.2h is kept the temperature after being warming up to 580 DEG C；After annealing furnace keeps the temperature 0.8h-1.2h at a temperature of 580 DEG C, annealing furnace is existed 670 DEG C are warming up in 1.6h-2.5h, and 0.8h-1.2h is kept the temperature after being warming up to 670 DEG C；Annealing furnace is protected at a temperature of 670 DEG C After warm 0.8h-1.2h, annealing furnace is warming up to 680 DEG C to 700 DEG C in 1.6h-2.5h, and be warming up to 680 DEG C to 700 DEG C After keep the temperature 11h-13h；It, will by the way of furnace cooling after annealing furnace keeps the temperature 11h-13h at a temperature of 680 DEG C to 700 DEG C The temperature of annealing furnace is down to 600 DEG C by 680 DEG C to 700 DEG C.
- 5. the method for a kind of high efficiency working hot-rolled strip according to claim 4, which is characterized in that in spheroidizing When, annealing furnace is warming up to 260 DEG C, and keep the temperature 1h after being warming up to 260 DEG C at full speed；Annealing furnace is kept the temperature at a temperature of 260 DEG C After 1h, annealing furnace is warming up to 400 DEG C in 2h, and 2h is kept the temperature after being warming up to 400 DEG C；Annealing furnace is at a temperature of 400 DEG C After keeping the temperature 2h, annealing furnace is warming up to 580 DEG C in 2h, and 1h is kept the temperature after being warming up to 580 DEG C；Temperature of the annealing furnace at 580 DEG C After the lower heat preservation 1h of degree, annealing furnace is warming up to 670 DEG C in 2h, and 1h is kept the temperature after being warming up to 670 DEG C；Annealing furnace is at 670 DEG C At a temperature of keep the temperature 1h after, annealing furnace is warming up to 680 DEG C to 700 DEG C in 2h, and protected after being warming up to 680 DEG C to 700 DEG C Warm 12h；After annealing furnace keeps the temperature 12h at a temperature of 680 DEG C to 700 DEG C, by the temperature of annealing furnace by the way of furnace cooling 600 DEG C are down to by 680 DEG C to 700 DEG C.
- 6. a kind of method of high efficiency working hot-rolled strip according to claim 1 or 3 or 4 or 5, which is characterized in that It needs to do detonation experiment before being heated up, it is ensured that the purity of hydrogen in ammonia destruction furnace；In entire heating and insulating process, practical temperature The difference of angle value and process warm angle value is less than 20 DEG C.
- 7. a kind of method of high efficiency working hot-rolled strip according to claim 6, which is characterized in that in entire heating and In insulating process, the difference of actual temperature value and process warm angle value is less than 15 DEG C.
- A kind of 8. method of high efficiency working hot-rolled strip according to claim 1, which is characterized in that the step 6 In, before finish rolling is carried out, the Oxygen potential of soft annealing roll bending need to be detected first with metallographic microscope, and will detection qualification Annealing roll bending carry out finish rolling.
- A kind of 9. method of high efficiency working hot-rolled strip according to claim 1, which is characterized in that the step 8 In, before second of longitudinal shearing slitting is carried out, the hardness of finish rolling roll bending need to be detected first with universal testing machine and hardometer, And acceptability limit Wei≤160HV of the hardness number of finish rolling roll bending.
- 10. the method for a kind of high efficiency working hot-rolled strip according to claim 9, which is characterized in that finish rolling roll bending Acceptability limit Wei≤140HV of hardness number.
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| CN111893264A (en) * | 2020-08-13 | 2020-11-06 | 无锡市城南带钢有限公司 | Production process of precision strip steel |
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| CN108165729A (en) * | 2017-12-22 | 2018-06-15 | 湖北大帆金属制品有限公司 | A kind of reciprocating annealing process of novel cold rolling strip bell furnace |
| CN107881303A (en) * | 2017-12-30 | 2018-04-06 | 江苏创泰特钢制品有限公司 | Steel annealing process |
| CN108311540A (en) * | 2018-02-26 | 2018-07-24 | 包头钢铁（集团）有限责任公司 | Steel production method, steel production system and computer readable storage medium |
| CN119287114A (en) * | 2024-10-10 | 2025-01-10 | 湖北帝盟新材料有限公司 | A processing technology for ultra-fine high-strength strip steel |
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| CN108193027B (en) | 2019-08-23 |
| CN106140812B (en) | 2018-10-09 |
| CN107881302A (en) | 2018-04-06 |
| CN106140812A (en) | 2016-11-23 |
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