CN108165893A - A kind of internal combustion changes windlass low-alloy high-strength steel plate and its production method - Google Patents
A kind of internal combustion changes windlass low-alloy high-strength steel plate and its production method Download PDFInfo
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- CN108165893A CN108165893A CN201711435891.3A CN201711435891A CN108165893A CN 108165893 A CN108165893 A CN 108165893A CN 201711435891 A CN201711435891 A CN 201711435891A CN 108165893 A CN108165893 A CN 108165893A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- 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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The present invention is that a kind of internal combustion changes windlass low-alloy high-strength steel plate, and weight percent chemical composition is：C：0.13~0.15%, Si：0.43~0.45%, Mn：1.11~1.13%, Nb：0.04~0.06%, Ti：0.033~0.035%, Als：0.06~0.08%, V：0.05~0.07%, P≤0.005%, S≤0.005%, Cr：0.51~0.53%, Mo：0.11~0.13%, Ni：0.47~0.49%, remaining is Fe and inevitable impurity.Internal combustion of the present invention changes yield strength >=610MPa of windlass low-alloy high-strength steel plate, tensile strength >=650MPa, elongation percentage >=20%；Impact of collision work(：‑60℃ KV2≥300J；Meanwhile low-temperature impact toughness is excellent, yield tensile ratio≤0.65.
Description
Technical field
The invention belongs to low-alloy high-strength structural steel board production technology fields, and in particular to a kind of internal combustion changes windlass use
Low-alloy high-strength steel plate and its production method.
Background technology
As railway high speed heavy duty develops, maintenance of way quality requirement is higher and higher, and one of track structure Major Diseases are
Bolt and the pillow nylon sleeve failure of track switch concrete on circuit.Railway department repaiies and engineering construction when institute into row line is big or middle
What is carried out lays a railway track, with rail, and the work such as maintenance are required for carrying out a large amount of bolt and track switch concrete pillowcase takes and changes anchor operation.To segment steel
Rail concrete pillow proposes higher requirement in terms of safeguarding processing.If handled not in time, circuit service life and machine will be directly affected
Vehicle operational safety.Mostly based on electronic, electronic machine for placing is covering machinery in terms of current failure bolt and nylon sleeve processing
Taking also needs to be equipped with generating set, and volume and weight is larger during work, and upper and lower road is very inconvenient, and working efficiency is low, function list
One.The steel plate that existing production internal combustion changes windlass does not have high-yield strength, high-tensile and high-elongation.
Invention content
The technical problems to be solved by the invention are to propose that a kind of internal combustion changes windlass low-alloy high-strength steel plate and its life
Production method makes steel plate obtain excellent low-temperature impact toughness while obtaining high-yield strength, high-tensile and high-elongation.
The present invention solve more than technical problem technical solution be：
A kind of internal combustion changes windlass low-alloy high-strength steel plate, and weight percent chemical composition is：C：0.13~
0.15%th, Si：0.43~0.45%, Mn：1.11~1.13%, Nb：0.04~0.06%, Ti：0.033~0.035%, Als：
0.06~0.08%, V：0.05~0.07%, P≤0.005%, S≤0.005%, Cr：0.51~0.53%, Mo：0.11~
0.13%th, Ni：0.47~0.49%, remaining is Fe and inevitable impurity.
Internal combustion changes the production method of windlass low-alloy high-strength steel plate, includes the following steps：Smelting, continuous casting, adds refining
Heat, rolling and cooling；Heating carries out heat stepwise, 880-900 DEG C of preheating section, 1170-1190 DEG C of bringing-up section, soaking zone 1210-
1230 DEG C, soaking time is 25-27 minutes；Using two benches controlled rolling, first stage start rolling temperature is 1170-1190 DEG C for rolling,
Finishing temperature is 910-930 DEG C；Second stage start rolling temperature is 870-890 DEG C, and finishing temperature is 710-730 DEG C；Cooling, by steel
Plate is then air-cooled to 430-450 with the cooling velocity of 5-6 DEG C/s first with the cooling velocity water cooling of 12-14 DEG C/s to 530-550 DEG C
DEG C, finally it is air-cooled to room temperature.
The beneficial effects of the invention are as follows：Internal combustion of the present invention change the yield strength of windlass low-alloy high-strength steel plate >=
610MPa, tensile strength >=650MPa, elongation percentage >=20%；Impact of collision work(：-60℃KV2≥300J；Meanwhile low-temperature impact
Good-toughness, yield tensile ratio≤0.65；In addition, the present invention is produced by the way of controlled rolling and controlled cooling, temper, work are not required to after rolling
Skill flow is short, easily implements control, has very strong practicability.
Specific embodiment
Embodiment 1
The present embodiment is that a kind of internal combustion changes windlass low-alloy high-strength steel plate, and weight percent chemical composition is：C：
0.13%th, Si：0.43%th, Mn：1.11%th, Nb：0.04%th, Ti：0.033%, Als：0.06%th, V：0.05%th, P≤
0.005%, S≤0.005%, Cr：0.51%th, Mo：0.11%th, Ni：0.47%, remaining is Fe and inevitable impurity.
The present embodiment internal combustion changes the production method of windlass low-alloy high-strength steel plate, includes the following steps：It smelts, essence
Refining, continuous casting, heating, rolling and cooling；Heating carries out heat stepwise, 880 DEG C of preheating section, 1170 DEG C of bringing-up section, soaking zone 1210
DEG C, soaking time is 25 minutes；Rolling is using two benches controlled rolling, and first stage start rolling temperature is 1170 DEG C, finishing temperature 910
℃；Second stage start rolling temperature is 870 DEG C, and finishing temperature is 710 DEG C；Cooling, by steel plate first with the cooling velocity water of 12 DEG C/s
It is cooled to 530 DEG C, it is then air-cooled to 430 DEG C with the cooling velocity of 5 DEG C/s, finally it is air-cooled to room temperature.
Embodiment 2
The present embodiment is that a kind of internal combustion changes windlass low-alloy high-strength steel plate, and weight percent chemical composition is：C：
0.14%th, Si：0.44%th, Mn：1.12%th, Nb：0.05%th, Ti：0.034%, Als：0.07%th, V：0.06%th, P≤
0.005%, S≤0.005%, Cr：0.52%th, Mo：0.12%th, Ni：0.48%, remaining is Fe and inevitable impurity.
The present embodiment internal combustion changes the production method of windlass low-alloy high-strength steel plate, includes the following steps：It smelts, essence
Refining, continuous casting, heating, rolling and cooling；Heating carries out heat stepwise, 890 DEG C of preheating section, 1180 DEG C of bringing-up section, soaking zone 1220
DEG C, soaking time is 26 minutes；Rolling is using two benches controlled rolling, and first stage start rolling temperature is 1180 DEG C, finishing temperature 920
℃；Second stage start rolling temperature is 880 DEG C, and finishing temperature is 720 DEG C；Cooling, by steel plate first with the cooling velocity water of 13 DEG C/s
It is cooled to 540 DEG C, it is then air-cooled to 440 DEG C with the cooling velocity of 6 DEG C/s, finally it is air-cooled to room temperature.
Embodiment 3
The present embodiment is that a kind of internal combustion changes windlass low-alloy high-strength steel plate, and weight percent chemical composition is：C：
0.15%th, Si：0.45%th, Mn：1.13%th, Nb：0.06%th, Ti：0.035%, Als：0.08%th, V：0.07%th, P≤
0.005%, S≤0.005%, Cr：0.53%th, Mo：0.13%th, Ni：0.49%, remaining is Fe and inevitable impurity.
The present embodiment internal combustion changes the production method of windlass low-alloy high-strength steel plate, includes the following steps：It smelts, essence
Refining, continuous casting, heating, rolling and cooling；Heating carries out heat stepwise, 900 DEG C of preheating section, 1190 DEG C of bringing-up section, soaking zone 1230
DEG C, soaking time is 27 minutes；Rolling is using two benches controlled rolling, and first stage start rolling temperature is 1190 DEG C, finishing temperature 930
℃；Second stage start rolling temperature is 890 DEG C, and finishing temperature is 730 DEG C；Cooling, by steel plate first with the cooling velocity water of 14 DEG C/s
It is cooled to 550 DEG C, it is then air-cooled to 450 DEG C with the cooling velocity of 6 DEG C/s, finally it is air-cooled to room temperature.
1 internal combustion of the embodiment of the present invention of table changes windlass low-alloy high-strength steel plate mechanics properties testing result
| Embodiment | Yield strength/MPa | Tensile strength/MPa | Elongation percentage/A | Yield tensile ratio | - 60 DEG C of ballistic works |
| 1 | 619 | 671 | 23.0 | 0.62 | 312 |
| 2 | 613 | 678 | 24.0 | 0.58 | 309 |
| 3 | 618 | 681 | 24.0 | 0.59 | 321 |
As it can be seen from table 1 the internal combustion of the present invention of the present invention changes windlass low-alloy high-strength steel plate excellent in mechanical performance.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical solution, all fall within the present invention claims protection domain.
Claims (8)
1. a kind of internal combustion changes windlass low-alloy high-strength steel plate, it is characterised in that：Its weight percent chemical composition is：C：
0.13~0.15%, Si：0.43~0.45%, Mn：1.11~1.13%, Nb：0.04~0.06%, Ti：0.033~
0.035%, Als：0.06~0.08%, V：0.05~0.07%, P≤0.005%, S≤0.005%, Cr：0.51~
0.53%th, Mo：0.11~0.13%, Ni：0.47~0.49%, remaining is Fe and inevitable impurity.
2. internal combustion as described in claim 1 changes windlass low-alloy high-strength steel plate, it is characterised in that：Its weight percent
It studies and is divided into：C：0.13%th, Si：0.43%th, Mn：1.11%th, Nb：0.04%th, Ti：0.033%, Als：0.06%th, V：
0.05%th, P≤0.005%, S≤0.005%, Cr：0.51%th, Mo：0.11%th, Ni：0.47%, remaining is for Fe and unavoidably
Impurity.
3. internal combustion as described in claim 1 changes windlass low-alloy high-strength steel plate, it is characterised in that：Its weight percent
It studies and is divided into：C：0.14%th, Si：0.44%th, Mn：1.12%th, Nb：0.05%th, Ti：0.034%, Als：0.07%th, V：
0.06%th, P≤0.005%, S≤0.005%, Cr：0.52%th, Mo：0.12%th, Ni：0.48%, remaining is for Fe and unavoidably
Impurity.
4. internal combustion as described in claim 1 changes windlass low-alloy high-strength steel plate, it is characterised in that：Its weight percent
It studies and is divided into：C：0.15%th, Si：0.45%th, Mn：1.13%th, Nb：0.06%th, Ti：0.035%, Als：0.08%th, V：
0.07%th, P≤0.005%, S≤0.005%, Cr：0.53%th, Mo：0.13%th, Ni：0.49%, remaining is for Fe and unavoidably
Impurity.
5. the internal combustion as described in any claim in claim 1-4 changes the producer of windlass low-alloy high-strength steel plate
Method includes the following steps：Smelting, refining, continuous casting, heating, rolling and cooling, it is characterised in that：
The heating progress heat stepwise, 880-900 DEG C of preheating section, 1170-1190 DEG C of bringing-up section, 1210-1230 DEG C of soaking zone,
Soaking time is 25-27 minutes；
Using two benches controlled rolling, first stage start rolling temperature is 1170-1190 DEG C for the rolling, and finishing temperature is 910-930 DEG C；
Second stage start rolling temperature is 870-890 DEG C, and finishing temperature is 710-730 DEG C；
The cooling, by steel plate first with the cooling velocity water cooling of 12-14 DEG C/s to 530-550 DEG C, then with the cooling of 5-6 DEG C/s
Air-cooled to 430-450 DEG C of speed, is finally air-cooled to room temperature.
6. internal combustion according to claim 5 changes the production method of windlass low-alloy high-strength steel plate, it is characterised in that：
The heating carries out heat stepwise, 880 DEG C of preheating section, 1170 DEG C of bringing-up section, 1210 DEG C of soaking zone, and soaking time is 25 points
Clock；
Using two benches controlled rolling, first stage start rolling temperature is 1170 DEG C for the rolling, and finishing temperature is 910 DEG C；Second stage
Start rolling temperature is 870 DEG C, and finishing temperature is 710 DEG C；
The cooling, it is then air-cooled with the cooling velocity of 5 DEG C/s by steel plate first with the cooling velocity water cooling of 12 DEG C/s to 530 DEG C
To 430 DEG C, it is finally air-cooled to room temperature.
7. internal combustion according to claim 5 changes the production method of windlass low-alloy high-strength steel plate, it is characterised in that：
The heating carries out heat stepwise, 890 DEG C of preheating section, 1180 DEG C of bringing-up section, 1220 DEG C of soaking zone, and soaking time is 26 points
Clock；
Using two benches controlled rolling, first stage start rolling temperature is 1180 DEG C for the rolling, and finishing temperature is 920 DEG C；Second stage
Start rolling temperature is 880 DEG C, and finishing temperature is 720 DEG C；
The cooling, it is then air-cooled with the cooling velocity of 6 DEG C/s by steel plate first with the cooling velocity water cooling of 13 DEG C/s to 540 DEG C
To 440 DEG C, it is finally air-cooled to room temperature.
8. internal combustion according to claim 5 changes the production method of windlass low-alloy high-strength steel plate, it is characterised in that：
The heating carries out heat stepwise, 900 DEG C of preheating section, 1190 DEG C of bringing-up section, 1230 DEG C of soaking zone, and soaking time is 27 points
Clock；
Using two benches controlled rolling, first stage start rolling temperature is 1190 DEG C for the rolling, and finishing temperature is 930 DEG C；Second stage
Start rolling temperature is 890 DEG C, and finishing temperature is 730 DEG C；
The cooling, it is then air-cooled with the cooling velocity of 6 DEG C/s by steel plate first with the cooling velocity water cooling of 14 DEG C/s to 550 DEG C
To 450 DEG C, it is finally air-cooled to room temperature.
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| CN103146997A (en) * | 2013-03-28 | 2013-06-12 | 宝山钢铁股份有限公司 | Low-alloy high-toughness wear resistant steel plate and manufacturing method thereof |
| CN106834919A (en) * | 2016-12-22 | 2017-06-13 | 南京钢铁股份有限公司 | A kind of 460MPa grade high ductilities low-alloy high-strength structural steel plate and its production method |
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2017
- 2017-12-26 CN CN201711435891.3A patent/CN108165893A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153370A (en) * | 2006-09-27 | 2008-04-02 | 鞍钢股份有限公司 | A low-alloy high-strength steel plate that can be welded with large heat input and its manufacturing method |
| CN102400059A (en) * | 2011-09-28 | 2012-04-04 | 南京钢铁股份有限公司 | Production process of corrosion-resistant steel plate for cargo oil tank of crude oil carrier |
| CN102676922A (en) * | 2012-05-11 | 2012-09-19 | 莱芜钢铁集团有限公司 | Low-alloy wear-resistant steel and manufacturing method thereof |
| CN103146997A (en) * | 2013-03-28 | 2013-06-12 | 宝山钢铁股份有限公司 | Low-alloy high-toughness wear resistant steel plate and manufacturing method thereof |
| CN106834919A (en) * | 2016-12-22 | 2017-06-13 | 南京钢铁股份有限公司 | A kind of 460MPa grade high ductilities low-alloy high-strength structural steel plate and its production method |
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