CN105333236B - A kind of manufacture method of high-temperature alloy seamless pipe - Google Patents
A kind of manufacture method of high-temperature alloy seamless pipe Download PDFInfo
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- CN105333236B CN105333236B CN201510760862.9A CN201510760862A CN105333236B CN 105333236 B CN105333236 B CN 105333236B CN 201510760862 A CN201510760862 A CN 201510760862A CN 105333236 B CN105333236 B CN 105333236B
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- 238000000034 method Methods 0.000 title claims abstract description 74
- 239000000956 alloy Substances 0.000 title claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 238000005097 cold rolling Methods 0.000 claims abstract description 34
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 238000005238 degreasing Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 8
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 7
- 239000011573 trace mineral Substances 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 229910052902 vermiculite Inorganic materials 0.000 claims description 41
- 235000019354 vermiculite Nutrition 0.000 claims description 41
- 239000010455 vermiculite Substances 0.000 claims description 41
- 239000011521 glass Substances 0.000 claims description 14
- 239000000314 lubricant Substances 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000005498 polishing Methods 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 11
- 239000010687 lubricating oil Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000004321 preservation Methods 0.000 claims description 6
- 238000005554 pickling Methods 0.000 abstract description 8
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 10
- 230000007547 defect Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical class S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/04—Cooling or lubricating mandrels during operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Lubricants (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of high-temperature alloy seamless pipe, its chemical composition is by weight percentage：Cr 20 23, Mo 8 10, Nb 3.15 4.15, Fe≤5, Mn≤0.5, Si≤0.5, Co<1, C<0.1, S<0.015, P<0.015, Cu<0.07, Al<0.4, Ti<0.4, balance of Ni and inevitably trace element, and manufacture method, comprise the following steps：Vacuum metling, the circular pipe of casting, circular heating of pipe blank, perforation, first time de-scaling, cold rolling, degreasing, heat treatment, finishing, second de-scaling.The seamless pipe surface of high-temperature alloy produced by the present invention is smooth, flawless, surface quality are good, dimensional accuracy is high, manufacture method flow of the invention is short, easy to operate, efficiency high, qualification rate are high, low cost, typically without the generation of pickling waste waters, environmentally friendly cost is reduced.
Description
Technical field
The invention belongs to alloy seamless Manifold technology field, more particularly to a kind of manufacture method of high-temperature alloy seamless pipe.
Background technology
At present, seamless pipe enterprise is mostly using cold-drawn or cold-rolling process manufacture seamless steel pipe, main production process：Blank is accurate
Standby → pickling lubrication → cold rolling (pulling out) → heat treatment → aligning → finishing → inspection, the seamless steel pipe manufactured using cold-rolling process,
Cold-rolling mill mould is accurate, cold rolling seamless steel pipe accurate size out, but in cold-rolled process, it is big due to subtracting wall, sizing reduction, it is cold
Mill train time is few, and heat treatment reason number of times is few, and remaining application of force is more, and after heat treatment, grain size does not often reach requirement.Production and processing
In easily produced problem：1. it is difficult to perforate, and crackle, the easy peeling in surface easily occurs；2. cold rolling difficulty, deformation difficulty is big, resistance of deformation
Greatly；3. pickling is difficult：Oxide skin is not easy to wash off, rough surface, and is also easy to produce substantial amounts of pickling waste waters, causes environmentally friendly place
Reason cost is significantly increased.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of manufacture method of high-temperature alloy seamless pipe, product surface
Quality is high, high yield rate, production procedure are short, low cost.
The present invention solves the technical scheme that is used of above-mentioned technical problem：
A kind of high-temperature alloy seamless pipe, its chemical composition is by weight percentage：Cr 20-23, Mo 8-10, Nb
3.15-4.15, Fe≤5, Mn≤0.5, Si≤0.5, Co<1, C<0.1, S<0.015, P<0.015, Cu<0.07, Al<0.4, Ti<
0.4, balance of Ni and inevitably trace element.
The technical indicator of the high-temperature alloy seamless pipe normal temperature mechanical property is：Yield strength>345MPa, tensile strength
>750MPa, elongation percentage>30%.
A kind of manufacture method of high-temperature alloy seamless pipe, comprises the following steps：
Step one, vacuum metling, the smelting operation carried out under less than standard atmosphere condition.Nothing in air can be realized
The smelting process that method is carried out, can prevent metal from aoxidizing, and separate the different material of boiling point, remove the gas or impurity in metal, increase
The deoxidizing capacity of carbon in strong metal, improves the quality of metal and alloy.
Step 2, round tube base is cast by conticaster, pipe surface quality directly influences the outer surface of fished pipe
Quality, first has to endure strict scrutiny pipe surface state, the outer surface of pipe is not allow for scabbing, crackle, shattered crack, ditch
The defects such as line, folding, indenture, the ears or side handles of a utensil, stomata, pit, sand holes and nonmetal inclusion, when depth of defect is more than 0.7~1.0 millimeter
When, defect can not burn with heating of pipe blank, but remain in any defect on pipe surface all can perforate deformation process in
Extension, makes defect deepen elongated on seamless tube outer surface, so that causing waste product, above-mentioned local defect should be subject to clearly in time
Reason, but defect processing depth does not allow more than the 5% of pipe diameter.
Step 3, circular heating of pipe blank.
The heating furnace used circular heating of pipe blank from the step 3 is worn to the step 4 to circular pipe
The heat preservation channel passed through for circular pipe is provided between the punch in hole, it is ensured that circular heating of pipe blank is come out of the stove between punch
Cooling extent be less than 10 degree.
Step 4, perforation, the perforating head for being used are provided with lubricant-jetting means, can be in perforation procedure constantly
Lubricant is injected between top and seamless pipe from top ejection, the glass dust of addition 1.5-2.5% in the lubricant of injection,
The granularity of glass dust is 180-190 mesh, it is ensured that perforation is smooth, and can guarantee that inner surface quality, while playing cooling effect.
Step 5, first time de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, while vermiculite also has suction-operated, seamless pipe appearance can be fully absorbed
The oxide in face, hydraulic pressure >=15MPa, the pressure >=10MPa of the compressed air of described water under high pressure, the vermiculite is in high pressure
Percentage by weight in water is 1-3%, the particle diameter≤0.8mm of the vermiculite.
Step 6, cold rolling, the outside plug used in cold-rolled process offers oil outlet, constantly makes in cold-rolled process
Lubricating oil is filled between plug and seamless inside pipe wall from oil outlet outflow, and so lubricating oil can flow to rolling when cold rolling
Deformed area, improves product quality, improves production efficiency.The cold rolling top that cold rolling process is used is multistage shaped form so that
Stress is preferable when cold rolling.
Step 7, degreasing, degreasing are usually, except degreasing, substantially there is three kinds of methods with aqueous slkali：(1) infusion method, is handle
Seamless pipe is immersed in the aqueous slkali of high temperature, surface attachments is cleaned out, infusion method institute with aqueous slkali chemically reactive
Simple, the low cost with equipment, but cleansing power is poor；(2) scrub and gunite, be seamless the alkali lye of high temperature with high-pressure injection
In pipe surface, while being scrubbed to seamless pipe surface with cleaning roller, this method cleansing power is strong；(3) electrolytic degreasing method, be
In the alkali lye of high temperature, the mechanical agitation power of the hydrogen and oxygen produced by electrolysis between seamless pipe and electrode is leaned against,
Seamless pipe surface is cleaned, electrolytic degreasing ability is very strong, and scavenging period can substantially shorten, it is adaptable to which high-volume seamless steel pipe is given birth to
Produce.
Step 8, heat treatment, can be using modes such as annealing, normalizing, quenching and tempering.
Step 9, finishing.
Step 10, second de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, while vermiculite also has suction-operated, seamless pipe appearance can be fully absorbed
The oxide in face, hydraulic pressure >=15MPa, the pressure >=10MPa of the compressed air of described water under high pressure, the vermiculite is in high pressure
Percentage by weight in water is 1-3%, the particle diameter≤0.8mm of the vermiculite.
Compared with prior art, the present invention has following beneficial effect：
1. physics descaling method is used, remove the oxide of seamless pipe surface, it is to avoid traditional pickling, prevent environment
Pollution, is mixed with vermiculite as grinding and polishing agent in water under high pressure, while vermiculite also has suction-operated, can fully absorb seamless pipe
The oxide of outer surface, cleaning performance is good.
2. the perforating head used when perforating is provided with lubricant-jetting means, be able to will constantly moisten in perforation procedure
Lubrication prescription is injected between top and seamless pipe from top ejection, the glass dust of addition 1.5-2.5%, glass in the lubricant of injection
The granularity of powder is 180-190 mesh, it is ensured that perforation is smooth, and can guarantee that inner surface quality, while playing cooling effect.
3. the outside plug used in cold-rolled process offers oil outlet, and constantly lubricating oil is made from going out in cold-rolled process
Oilhole outflow is filled between plug and seamless inside pipe wall, and so lubricating oil can flow to contact in rolling when cold rolling, carry
Product quality high, improves production efficiency.The cold rolling top that cold rolling process is used is multistage shaped form so that stress when cold rolling
State is preferable.
In a word, the seamless pipe surface of high-temperature alloy produced by the present invention is smooth, flawless, product reconditioning quality are few, surface matter
Measure, dimensional accuracy it is high, manufacture method flow of the invention is short, easy to operate, efficiency high, qualification rate are high, low cost, does not have especially
There is the generation of pickling waste waters, reduce environmentally friendly cost.
Brief description of the drawings
Fig. 1 is the seamless pipe manufacturing method schematic flow sheet of high-temperature alloy of the present invention.
Specific embodiment
Some vocabulary have such as been used to censure specific components in the middle of specification and claim.Those skilled in the art should
It is understood that hardware manufacturer may call same component with different nouns.This specification and claims are not with name
The difference of title is used as distinguishing the mode of component, but the difference with component functionally is used as the criterion distinguished.Such as logical
Specification and claim mentioned in " including " be an open language, therefore should be construed to " including but not limit
In ".To implement better embodiment of the invention, so the description is to illustrate general original of the invention to specification subsequent descriptions
For the purpose of then, the scope of the present invention is not limited to.Protection scope of the present invention when regard the appended claims person of defining as
It is accurate.
In description of the invention, it is to be understood that, " first time de-scaling ", " second de-scaling " are only used for describing purpose, and
It is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic, it is impossible to be interpreted as right
Limitation of the invention.
The present invention is described in further detail below, but it is not as a limitation of the invention.
A kind of high-temperature alloy seamless pipe, its chemical composition is by weight percentage：Cr 20-23, Mo 8-10, Nb
3.15-4.15, Fe≤5, Mn≤0.5, Si≤0.5, Co<1, C<0.1, S<0.015, P<0.015, Cu<0.07, Al<0.4, Ti<
0.4, balance of Ni and inevitably trace element.
The technical indicator of the high-temperature alloy seamless pipe normal temperature mechanical property is：Yield strength>345MPa, tensile strength
>750MPa, elongation percentage>30%.
A kind of manufacture method of high-temperature alloy seamless pipe, comprises the following steps：
Step one, vacuum metling.
Step 2, the circular pipe of casting.
Step 3, circular heating of pipe blank.
The heating furnace used circular heating of pipe blank from the step 3 is worn to the step 4 to circular pipe
The heat preservation channel passed through for circular pipe is provided between the punch in hole, it is ensured that circular heating of pipe blank is come out of the stove between punch
Cooling extent be less than 10 degree.
Step 4, perforation, the perforating head for being used are provided with lubricant-jetting means, can be in perforation procedure constantly
Lubricant is injected between top and seamless pipe from top ejection, the glass dust of addition 1.5-2.5% in the lubricant of injection,
The granularity of glass dust is 180-190 mesh.
Step 5, first time de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure >=15MPa of described water under high pressure, the pressure of the compressed air
>=10MPa, percentage by weight of the vermiculite in water under high pressure is 1-3%, the particle diameter≤0.8mm of the vermiculite.
Step 6, cold rolling, the outside plug used in cold-rolled process offers oil outlet, constantly makes in cold-rolled process
Lubricating oil is filled between plug and seamless inside pipe wall from oil outlet outflow, and the cold rolling top that cold rolling process is used is bent for multistage
It is linear.
Step 7, degreasing.
Step 8, heat treatment.
Step 9, finishing.
Step 10, second de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure >=15MPa of described water under high pressure, the pressure of the compressed air
>=10MPa, percentage by weight of the vermiculite in water under high pressure is 1-3%, the particle diameter≤0.8mm of the vermiculite.
The present invention is illustrated using specific embodiment below, phase is manufactured using the circular pipe (200mm) of same diameter
Same diameter (625mm) and the high-temperature alloy seamless pipe of wall thickness (16mm).
Embodiment 1
A kind of manufacture method of high-temperature alloy seamless pipe, comprises the following steps：
Step one, vacuum metling, its chemical composition is by weight percentage：Cr 20-23, Mo 8-10, Nb 3.15-
4.15, Fe≤5, Mn≤0.5, Si≤0.5, Co<1, C<0.1, S<0.015, P<0.015, Cu<0.07, Al<0.4, Ti<0.4,
Balance of Ni and inevitably trace element.
Step 2, the circular pipe of casting.
Step 3, circular heating of pipe blank, heating-up temperature is 1083-1160 DEG C.
The heating furnace used circular heating of pipe blank from the step 3 is worn to the step 4 to circular pipe
The heat preservation channel passed through for circular pipe is provided between the punch in hole, it is ensured that circular heating of pipe blank is come out of the stove between punch
Cooling extent be less than 10 degree.
Step 4, perforation, the perforating head for being used are provided with lubricant-jetting means, can be in perforation procedure constantly
Lubricant is injected between top and seamless pipe from top ejection, the glass dust of addition 1.5%, glass in the lubricant of injection
The granularity of powder is 180 mesh.
Step 5, first time de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure 15MPa of described water under high pressure, the pressure of the compressed air
10MPa, percentage by weight of the vermiculite in water under high pressure is 3%, the particle diameter 0.8mm of the vermiculite.
Step 6, cold rolling, the outside plug used in cold-rolled process offers oil outlet, constantly makes in cold-rolled process
Lubricating oil is filled between plug and seamless inside pipe wall from oil outlet outflow, and the cold rolling top that cold rolling process is used is bent for multistage
It is linear.
Step 7, degreasing.
Step 8, heat treatment.
Step 9, finishing.
Step 10, second de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure 15MPa of described water under high pressure, the pressure of the compressed air
10MPa, percentage by weight of the vermiculite in water under high pressure is 1%, the particle diameter 0.5mm of the vermiculite.
The technical indicator of high-temperature alloy seamless pipe normal temperature mechanical property of the present embodiment manufacture is：Yield strength
350MPa, tensile strength 765MPa, elongation percentage 31%.
Embodiment 2
A kind of manufacture method of high-temperature alloy seamless pipe, comprises the following steps：
Step one, vacuum metling, its chemical composition is by weight percentage：Cr 20-23, Mo 8-10, Nb 3.15-
4.15, Fe≤5, Mn≤0.5, Si≤0.5, Co<1, C<0.1, S<0.015, P<0.015, Cu<0.07, Al<0.4, Ti<0.4,
Balance of Ni and inevitably trace element.
Step 2, the circular pipe of casting.
Step 3, circular heating of pipe blank, heating-up temperature is 1083-1160 DEG C.
The heating furnace used circular heating of pipe blank from the step 3 is worn to the step 4 to circular pipe
The heat preservation channel passed through for circular pipe is provided between the punch in hole, it is ensured that circular heating of pipe blank is come out of the stove between punch
Cooling extent be less than 10 degree.
Step 4, perforation, the perforating head for being used are provided with lubricant-jetting means, can be in perforation procedure constantly
Lubricant is injected between top and seamless pipe from top ejection, the glass dust of addition 2.5%, glass in the lubricant of injection
The granularity of powder is 190 mesh.
Step 5, first time de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure 25MPa of described water under high pressure, the pressure of the compressed air
20MPa, percentage by weight of the vermiculite in water under high pressure is 1%, the particle diameter 0.7mm of the vermiculite.
Step 6, cold rolling, the outside plug used in cold-rolled process offers oil outlet, constantly makes in cold-rolled process
Lubricating oil is filled between plug and seamless inside pipe wall from oil outlet outflow, and the cold rolling top that cold rolling process is used is bent for multistage
It is linear.
Step 7, degreasing.
Step 8, heat treatment.
Step 9, finishing.
Step 10, second de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure 20MPa of described water under high pressure, the pressure of the compressed air
18MPa, percentage by weight of the vermiculite in water under high pressure is 2%, the particle diameter 0.6mm of the vermiculite.
The technical indicator of the high-temperature alloy seamless pipe normal temperature mechanical property is：Yield strength 366MPa, tensile strength
758MPa, elongation percentage 32%.
Embodiment 3
A kind of manufacture method of high-temperature alloy seamless pipe, comprises the following steps：
Step one, vacuum metling, its chemical composition is by weight percentage：Cr 20-23, Mo 8-10, Nb 3.15-
4.15, Fe≤5, Mn≤0.5, Si≤0.5, Co<1, C<0.1, S<0.015, P<0.015, Cu<0.07, Al<0.4, Ti<0.4,
Balance of Ni and inevitably trace element.
Step 2, the circular pipe of casting.
Step 3, circular heating of pipe blank, heating-up temperature is 1083-1160 DEG C.
The heating furnace used circular heating of pipe blank from the step 3 is worn to the step 4 to circular pipe
The heat preservation channel passed through for circular pipe is provided between the punch in hole, it is ensured that circular heating of pipe blank is come out of the stove between punch
Cooling extent be less than 10 degree.
Step 4, perforation, the perforating head for being used are provided with lubricant-jetting means, can be in perforation procedure constantly
Lubricant is injected between top and seamless pipe from top ejection, the glass dust of addition 2%, glass dust in the lubricant of injection
Granularity be 185 mesh.
Step 5, first time de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure 35MPa of described water under high pressure, the pressure of the compressed air
20MPa, percentage by weight of the vermiculite in water under high pressure is 2.5%, the particle diameter 0.8mm of the vermiculite.
Step 6, cold rolling, the outside plug used in cold-rolled process offers oil outlet, constantly makes in cold-rolled process
Lubricating oil is filled between plug and seamless inside pipe wall from oil outlet outflow, and the cold rolling top that cold rolling process is used is bent for multistage
It is linear.
Step 7, degreasing.
Step 8, heat treatment.
Step 9, finishing.
Step 10, second de-scaling, using physics descaling method, i.e., mix spray using equipment by water under high pressure and compressed air
Go out, vermiculite is mixed with water under high pressure as grinding and polishing agent, the hydraulic pressure 20MPa of described water under high pressure, the pressure of the compressed air
18MPa, percentage by weight of the vermiculite in water under high pressure is 2%, the particle diameter 0.5mm of the vermiculite.
The technical indicator of the high-temperature alloy seamless pipe normal temperature mechanical property is：Yield strength 380MPa, tensile strength
785MPa, elongation percentage 33%.
Comparative example 1
The seamless pipe manufacturing method of high-temperature alloy of prior art, comprises the following steps：
Step one, circular pipe prepare, and chemical composition by mass percentage is：C≤0.03%, Si≤1%, Mn≤
2%th, P≤0.035%, S≤0.03%, Ni10-14%, Cr16-18%, Mo2-3%, Fe60-70%；Heating-up temperature is
1015-1025℃。
Step 2, perforation, the perforating head for being used come directly towards for conventional punch, are not provided with lubricant-jetting means.
Step 3, first time pickling, the proportioning of the weight percent of pickle is, the 21-25% concentrated sulfuric acids, balance of
Water.
Step 4, cold rolling, the outside plug used in cold-rolled process does not open up oil outlet, using common cold rolling top
Head.
Step 5, degreasing.
Step 6, heat treatment.
Step 7, finishing.
Step 8, second pickling, the proportioning of the weight percent of pickle is, the 21-25% concentrated sulfuric acids, balance of
Water.
Comparative example is below entered comparative example 1 with the implementation result of embodiment 1-3 using the manufacture method of conventional seamless pipe
Row contrast, referring to following table：
The present invention is described in detail according to embodiment and comparative example above, non-detailed portion is prior art, but
It is that the present invention is not limited to above-described embodiment and comparative example, in the ken that those skilled in the art possess, can also be
Made a variety of changes on the premise of not departing from present inventive concept.
Claims (8)
1. a kind of manufacture method of high-temperature alloy seamless pipe, it is characterised in that its chemical composition of high-temperature alloy seamless pipe
It is by weight percentage：Cr 20-23, Mo 8-10, Nb 3.15-4.15, Fe≤5, Mn≤0.5, Si≤0.5, Co<1, C<
0.1, S<0.015, P<0.015, Cu<0.07, Al<0.4, Ti<0.4, balance of Ni and inevitably trace element；It is described resistance to
The technical indicator of high-temperature alloy seamless pipe normal temperature mechanical property is：Yield strength>345MPa, tensile strength>750MPa, elongation percentage
>30%；
High-temperature alloy seamless pipe comprises the following steps：Step one, vacuum metling；Step 2, the circular pipe of casting；Step
3rd, circular heating of pipe blank；Step 4, perforation；Step 5, first time de-scaling；It is step 6, cold rolling；Step 7, degreasing；Step 8,
Heat treatment；Step 9, finishing；Step 10, second de-scaling；
Wherein：
Second de-scaling of the step 5 first time de-scaling and step 10 uses physics descaling method, i.e., using equipment by high pressure
Water and compressed air mixing are sprayed, and vermiculite is mixed with water under high pressure as grinding and polishing agent.
2. the manufacture method of high-temperature alloy seamless pipe according to claim 1, it is characterised in that described water under high pressure
Hydraulic pressure >=15MPa, the pressure >=10MPa of the compressed air, percentage by weight of the vermiculite in water under high pressure is 1-3%,
Particle diameter≤the 0.8mm of the vermiculite.
3. the manufacture method of high-temperature alloy seamless pipe according to claim 2, it is characterised in that the step 5 first
Secondary de-scaling, the hydraulic pressure 35MPa, the pressure 20MPa of the compressed air, weight of the vermiculite in water under high pressure of described water under high pressure
Amount percentage is 2.5%, the particle diameter 0.8mm of the vermiculite；
Second de-scaling, the hydraulic pressure 20MPa of described water under high pressure, the pressure 18MPa of the compressed air, the vermiculite exists
Percentage by weight in water under high pressure is 2%, the particle diameter 0.5mm of the vermiculite.
4. the manufacture method of high-temperature alloy seamless pipe according to claim 1 and 2, it is characterised in that from the step
Setting between the punch that the heating furnace that the three pairs of circular heating of pipe blank are used is perforated to the step 4 to circular pipe
For the heat preservation channel that circular pipe passes through, it is ensured that circular heating of pipe blank is come out of the stove to cooling extent between punch and is less than 10
Degree.
5. the manufacture method of high-temperature alloy seamless pipe according to claim 1 and 2, it is characterised in that the step 4
When entering eleven punch 11, the perforating head for being used is provided with lubricant-jetting means, can be in perforation procedure constantly by lubricant
It is injected between top and seamless pipe from top ejection.
6. the manufacture method of high-temperature alloy seamless pipe according to claim 4, it is characterised in that sprayed in the step 4
The glass dust of addition 1.5-2.5% in the lubricant penetrated；The grain of the glass dust of addition in the lubricant sprayed in the step 4
It is 180-190 mesh to spend.
7. the manufacture method of high-temperature alloy seamless pipe according to claim 1 and 2, it is characterised in that step 6 is cold rolling
Outside plug used in process offers oil outlet, lubricating oil is filled in from oil outlet outflow in cold-rolled process
Between plug and seamless inside pipe wall.
8. the manufacture method of high-temperature alloy seamless pipe according to claim 7, it is characterised in that step 6 cold rolling process
The cold rolling top for using is multistage shaped form.
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| CN106583482A (en) * | 2016-12-07 | 2017-04-26 | 安徽天大石油管材股份有限公司 | Lubrication method for cold-drawn steel pipes |
| JP6723210B2 (en) * | 2017-09-14 | 2020-07-15 | 日本冶金工業株式会社 | Nickel-based alloy |
| CN114293067B (en) * | 2021-12-27 | 2023-03-31 | 上海康晟航材科技股份有限公司 | High-temperature alloy for electronic firework push rod and preparation process and application thereof |
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Denomination of invention: A manufacturing method of high temperature resistant alloy seamless pipe Effective date of registration: 20210929 Granted publication date: 20170623 Pledgee: Zhejiang Nanxun Rural Commercial Bank branch Shuanglin Limited by Share Ltd. Pledgor: HUZHOU GAOLIN STAINLESS STEEL TUBE MANUFACTURE Co.,Ltd. Registration number: Y2021330001805 |