CN106702276A - Manufacturing method for 65Mn steel plate - Google Patents
Manufacturing method for 65Mn steel plate Download PDFInfo
- Publication number
- CN106702276A CN106702276A CN201611207753.5A CN201611207753A CN106702276A CN 106702276 A CN106702276 A CN 106702276A CN 201611207753 A CN201611207753 A CN 201611207753A CN 106702276 A CN106702276 A CN 106702276A
- Authority
- CN
- China
- Prior art keywords
- cold rolling
- steel
- cold
- steel plate
- manufacture method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
-
- 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
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention relates to the technical field of metallurgy, in particular to a manufacturing method for a 65 Mn steel plate. The manufacturing method comprises the following steps of: smelting molten steel through a 300-ton converter to obtain casting blank, wherein molten steel consists of the following components in percentage by weight: 0.63-0.67% of C, 0.20-0.30% of Si, 0.9-1.1% of Mn, less than or equal to 0.020% of P, less than or equal to 0.015% of S, 0.01-0.05% of Al, and the balance Fe and inevitable impurities; performing hot-rolling, pickling and primary cold-rolling on the casting blank in sequence; performing annealing and secondary cold-rolling on a cold-rolled coil in sequence; and performing head and tail cutting, withdrawing-straightening and finishing-packaging on the cold-rolled coil in sequence. According to the manufacturing method for the 65 Mn steel plate provided by the invention, steel purity and the yield of the manufactured 65 Mn steel plate are obviously superior to those of a 65 Mn steel plate produced by conventional small-furnace steel making, so that usage requirements, on materials, of industries such as mechanical manufacturing can be met.
Description
Technical field
The present invention relates to metallurgical technology field, more particularly to a kind of manufacture method of 65Mn steel plates.
Background technology
After 65Mn heat treatments and Cold-draw Hardening, intensity is higher, with certain toughness and plasticity.Similar face state and complete
In the case of full through hardening, fatigue limit is suitable with alloy spring.65Mn is mainly used in the spring of reduced size, such as variable voltage control bullet
Circle in spring, dynamometer spring, common mechanical, square helical spring pull into the spring that steel wire is made on small-sized machine.High-carbon steel 65Mn
It is generally used for the machine components such as saw blade, chain saw plate.For chain saw plate 65Mn, both at home and abroad generally using port (30 tonnes of converters)
Steel-making-arrowband hot rolling-arrowband cold-rolling process is produced, and the subject matter that this process bands are come is：Steel is caused using port steel-making
It is impure, generally exist and more stick up skin, dreg defect；Using small milling train production cause crop end more, not only lumber recovery it is low and
And low production efficiency.
The content of the invention
By providing a kind of manufacture method of 65Mn steel plates, solve is caused the present invention using port steel-making in the prior art
Steel is not pure, exists and more sticks up skin, dreg defect；The more technical problem of crop end is caused using the production of small milling train, is improved
The product quality of 65Mn steel plates.
The invention provides a kind of manufacture method of 65Mn steel plates, methods described includes：
Molten steel is obtained into strand after 300 tons of converter smeltings；The molten steel contains C by weight percentage：0.63-
0.67%, Si：0.20-0.30%, Mn：0.9-1.1%, P：≤ 0.020%, S：≤ 0.015%, Al：0.01~0.05%, its
It is remaining for Fe and inevitable impurity；
Carry out hot rolling, pickling and first time successively to the strand cold rolling；
Carry out annealing successively to the cold rolling coil and second cold rolling；
Carry out crop end, straightening and finishing packaging successively to the cold rolling coil.
Further, cold rolling reduction ratio is controlled to 10-30% for the first time.
Further, annealing temperature is controlled to 570-630 DEG C.
Further, second cold rolling reduction ratio is controlled to 30-50%.
One or more technical scheme that the present invention is provided, at least possesses following beneficial effect or advantage：
The manufacture method of the 65Mn steel plates that the present invention is provided, molten steel obtains strand after 300 tons of converter smeltings, and traditional
Port is smelted and is compared, and the strand impurity using 300 tons of converter smeltings is few, and temperature control is uniform, the structural behaviour of the strand for obtaining
Preferably.By carrying out to strand hot rolling, pickling and cold rolling for the first time successively, carry out annealing successively to cold rolling coil and second cold
Roll, and carry out the 65Mn steel plates that crop end, straightening and finishing are packaged to be successively to cold rolling coil, its purity of steel and become a useful person
Rate is substantially better than the 65Mn steel plates of traditional port STEELMAKING PRODUCTION, can the industries such as machine-building that meet will to the use of material
Ask.
Brief description of the drawings
Fig. 1 is the manufacture method flow chart of 65Mn steel plates provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is solved and refined using port in the prior art by providing a kind of manufacture method of 65Mn steel plates
Steel causes steel impure, exists and more sticks up skin, dreg defect；The technology for causing crop end more using the production of small milling train is asked
Topic, improves the product quality of 65Mn steel plates.
Referring to Fig. 1, a kind of manufacture method of 65Mn steel plates is the embodiment of the invention provides, the method includes：
Step 10, molten steel is obtained into strand after 300 tons of converter smeltings.Molten steel contains C by weight percentage：0.63-
0.67%, Si：0.20-0.30%, Mn：0.9-1.1%, P：≤ 0.020%, S：≤ 0.015%, Al：0.01~0.05%, its
It is remaining for Fe and inevitable impurity.
Step 20, strand is carried out successively hot rolling, pickling and for the first time it is cold rolling.Cold rolling reduction ratio is controlled to for the first time
10-30%.
Step 30, cold rolling coil is annealed successively and second cold rolling.Annealing temperature is controlled to 570-630 DEG C, second
Secondary cold rolling reduction ratio is controlled to 30-50%.
Step 40, cold rolling coil is carried out successively crop end, straightening and finishing packaging.
The manufacture method of the 65Mn steel plates provided the present invention with reference to specific embodiment is illustrated：
Embodiment 1
A kind of manufacture method of 65Mn steel plates is present embodiments provided, the method is comprised the following steps：
Step 101, molten steel is obtained into strand after 300 tons of converter smeltings.Molten steel contains C by weight percentage：
0.65%, Si：0.20%, Mn：1.1%, P：0.020%, S：0.015%, Al：0.01%, remaining is for Fe and inevitably
Impurity.
Step 201, strand is carried out successively hot rolling, pickling and for the first time it is cold rolling.Cold rolling reduction ratio is controlled to for the first time
30%.
Step 301, cold rolling coil is annealed successively and second cold rolling.Annealing temperature is controlled to 610 DEG C, and second cold
Roll reduction ratio and be controlled to 40%.
Step 401, cold rolling coil is carried out successively crop end, straightening and finishing packaging, obtain the thickness of 65Mn steel plate finished products
It is 0.9mm.
The field trash grade of the 65Mn steel plate finished products of the manufacture method manufacture of the 65Mn steel plates that the present embodiment is provided is 0.5,
Lumber recovery is 92%.
Embodiment 2
A kind of manufacture method of 65Mn steel plates is present embodiments provided, the method is comprised the following steps：
Step 102, molten steel is obtained into strand after 300 tons of converter smeltings.Molten steel contains C by weight percentage：
0.64%, Si：0.25%, Mn：1.0%, P：0.010%, S：0.015%, Al：0.02%, remaining is for Fe and inevitably
Impurity.
Step 202, strand is carried out successively hot rolling, pickling and for the first time it is cold rolling.Cold rolling reduction ratio is controlled to for the first time
18%.
Step 302, cold rolling coil is annealed successively and second cold rolling.Annealing temperature is controlled to 600 DEG C, and second cold
Roll reduction ratio and be controlled to 46%.
Step 402, cold rolling coil is carried out successively crop end, straightening and finishing packaging, obtain the thickness of 65Mn steel plate finished products
It is 0.95mm.
The field trash grade of the 65Mn steel plate finished products of the manufacture method manufacture of the 65Mn steel plates that the present embodiment is provided is 0.5,
Lumber recovery is 90%.
Embodiment 3
A kind of manufacture method of 65Mn steel plates is present embodiments provided, the method is comprised the following steps：
Step 103, molten steel is obtained into strand after 300 tons of converter smeltings.Molten steel contains C by weight percentage：
0.66%, Si：0.27%, Mn：1.1%, P：0.010%, S：0.010%, Al：0.04%, remaining is for Fe and inevitably
Impurity.
Step 203, strand is carried out successively hot rolling, pickling and for the first time it is cold rolling.Cold rolling reduction ratio is controlled to for the first time
20%.
Step 303, cold rolling coil is annealed successively and second cold rolling.Annealing temperature is controlled to 620 DEG C, and second cold
Roll reduction ratio and be controlled to 40%.
Step 403, cold rolling coil is carried out successively crop end, straightening and finishing packaging, obtain the thickness of 65Mn steel plate finished products
It is 1.0mm.
The field trash grade of the 65Mn steel plate finished products of the manufacture method manufacture of the 65Mn steel plates that the present embodiment is provided is 0.5,
Lumber recovery is 92.5%.
Embodiment 4
A kind of manufacture method of 65Mn steel plates is present embodiments provided, the method is comprised the following steps：
Step 104, molten steel is obtained into strand after 300 tons of converter smeltings.Molten steel contains C by weight percentage：
0.64%, Si：0.20%, Mn：0.9%, P：0.020%, S：0.010%, Al：0.25%, remaining is for Fe and inevitably
Impurity.
Step 204, strand is carried out successively hot rolling, pickling and for the first time it is cold rolling.Cold rolling reduction ratio is controlled to for the first time
15%.
Step 304, cold rolling coil is annealed successively and second cold rolling.Annealing temperature is controlled to 630 DEG C, and second cold
Roll reduction ratio and be controlled to 35%.
Step 404, cold rolling coil is carried out successively crop end, straightening and finishing packaging, obtain the thickness of 65Mn steel plate finished products
It is 1.2mm.
The field trash grade of the 65Mn steel plate finished products of the manufacture method manufacture of the 65Mn steel plates that the present embodiment is provided is 0, into
Material rate is 91%.
Embodiment 5
A kind of manufacture method of 65Mn steel plates is present embodiments provided, the method is comprised the following steps：
Step 105, molten steel is obtained into strand after 300 tons of converter smeltings.Molten steel contains C by weight percentage：
0.67%, Si：0.29%, Mn：1.1%, P：0.010%, S：0.010%, Al：0.03%, remaining is for Fe and inevitably
Impurity.
Step 205, strand is carried out successively hot rolling, pickling and for the first time it is cold rolling.Cold rolling reduction ratio is controlled to for the first time
20%.
Step 305, cold rolling coil is annealed successively and second cold rolling.Annealing temperature is controlled to 620 DEG C, and second cold
Roll reduction ratio and be controlled to 40%.
Step 405, cold rolling coil is carried out successively crop end, straightening and finishing packaging, obtain the thickness of 65Mn steel plate finished products
It is 1.1mm.
The field trash grade of the 65Mn steel plate finished products of the manufacture method manufacture of the 65Mn steel plates that the present embodiment is provided is 0, into
Material rate is 90%.
Embodiment 6
A kind of manufacture method of 65Mn steel plates is present embodiments provided, the method is comprised the following steps：
Step 106, molten steel is obtained into strand after 300 tons of converter smeltings.Molten steel contains C by weight percentage：
0.64%, Si：0.30%, Mn：1.1%, P：0.020%, S：0.010%, Al：0.02%, remaining is for Fe and inevitably
Impurity.
Step 206, strand is carried out successively hot rolling, pickling and for the first time it is cold rolling.Cold rolling reduction ratio is controlled to for the first time
20%.
Step 306, cold rolling coil is annealed successively and second cold rolling.Annealing temperature is controlled to 610 DEG C, and second cold
Roll reduction ratio and be controlled to 45%.
Step 406, cold rolling coil is carried out successively crop end, straightening and finishing packaging, obtain the thickness of 65Mn steel plate finished products
It is 1.0mm.
The field trash grade of the 65Mn steel plate finished products of the manufacture method manufacture of the 65Mn steel plates that the present embodiment is provided is 0.5,
Lumber recovery is 89%.
One or more technical scheme provided in an embodiment of the present invention, at least possesses following beneficial effect：
The manufacture method of 65Mn steel plates provided in an embodiment of the present invention, molten steel obtains strand after 300 tons of converter smeltings, with
Traditional port is smelted and is compared, and the strand impurity using 300 tons of converter smeltings is few, and temperature control is uniform, the knot of the strand for obtaining
Structure better performances.By carrying out to strand hot rolling, pickling and cold rolling for the first time successively, cold rolling coil is annealed successively and the
Secondary cold-rolling, and carry out the 65Mn steel plates that crop end, straightening and finishing are packaged to be, its purity of steel successively to cold rolling coil
With the 65Mn steel plates that lumber recovery is substantially better than traditional port STEELMAKING PRODUCTION, can meet the industries such as machine-building to material
Use requirement.
It should be noted last that, above specific embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should cover
In the middle of scope of the presently claimed invention.
Claims (4)
1. a kind of manufacture method of 65Mn steel plates, it is characterised in that methods described includes：
Molten steel is obtained into strand after 300 tons of converter smeltings；The molten steel contains C by weight percentage：0.63-0.67%,
Si：0.20-0.30%, Mn：0.9-1.1%, P：≤ 0.020%, S：≤ 0.015%, Al：0.01~0.05%, remaining is Fe
With inevitable impurity；
Carry out hot rolling, pickling and first time successively to the strand cold rolling；
Carry out annealing successively to the cold rolling coil and second cold rolling；
Carry out crop end, straightening and finishing packaging successively to the cold rolling coil.
2. the manufacture method of 65Mn steel plates as claimed in claim 1, it is characterised in that cold rolling reduction ratio is controlled to for the first time
10-30%.
3. the manufacture method of 65Mn steel plates as claimed in claim 2, it is characterised in that annealing temperature is controlled to 570-630 DEG C.
4. the manufacture method of 65Mn steel plates as claimed in claim 3, it is characterised in that second cold rolling reduction ratio is controlled to
30-50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611207753.5A CN106702276A (en) | 2016-12-23 | 2016-12-23 | Manufacturing method for 65Mn steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611207753.5A CN106702276A (en) | 2016-12-23 | 2016-12-23 | Manufacturing method for 65Mn steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106702276A true CN106702276A (en) | 2017-05-24 |
Family
ID=58903174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611207753.5A Pending CN106702276A (en) | 2016-12-23 | 2016-12-23 | Manufacturing method for 65Mn steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106702276A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557680A (en) * | 2017-08-02 | 2018-01-09 | 包头钢铁（集团）有限责任公司 | Mill coil 65Mn of RE-treated and preparation method thereof |
| CN107649512A (en) * | 2017-09-08 | 2018-02-02 | 新余钢铁股份有限公司 | A kind of manufacturing process of 65Mn cold rollings wide strip |
| CN111979395A (en) * | 2020-07-29 | 2020-11-24 | 苏州翔楼新材料股份有限公司 | Method for processing cold-rolled steel strip for knife saw |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605250A (en) * | 2012-03-27 | 2012-07-25 | 首钢总公司 | Vehicle steel plate and production method thereof |
| CN102747283A (en) * | 2012-07-31 | 2012-10-24 | 首钢总公司 | Method for producing steel strip for copper-plated precision welded pipe |
| CN102912101A (en) * | 2012-10-19 | 2013-02-06 | 攀钢集团成都钢钒有限公司 | Production process of 65 Mn spring steel wire rod and 65 Mn spring steel wire rod |
| CN103143563A (en) * | 2013-04-03 | 2013-06-12 | 河北联合大学 | Method for preventing 65 Mn hot rolled steel coil from collapsing by phase-change thermal expansion |
| CN103589948A (en) * | 2013-11-07 | 2014-02-19 | 首钢总公司 | Low-carbon-aluminum killed steel hot-galvanized plate and production method thereof |
| CN103614628A (en) * | 2013-12-12 | 2014-03-05 | 首钢总公司 | 65MnTiB steel and manufacturing method of hot rolled steel plate thereof |
| CN104561731A (en) * | 2014-12-28 | 2015-04-29 | 首钢总公司 | Production method of high-tenacity 65Mn spring steel with uniform whole wire rod property |
| CN105177406A (en) * | 2015-07-23 | 2015-12-23 | 柳州市众力金铭热处理有限公司 | Machining method for high-hardness and high-tenacity 65 Mn steel rod of rod mill |
-
2016
- 2016-12-23 CN CN201611207753.5A patent/CN106702276A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605250A (en) * | 2012-03-27 | 2012-07-25 | 首钢总公司 | Vehicle steel plate and production method thereof |
| CN102747283A (en) * | 2012-07-31 | 2012-10-24 | 首钢总公司 | Method for producing steel strip for copper-plated precision welded pipe |
| CN102912101A (en) * | 2012-10-19 | 2013-02-06 | 攀钢集团成都钢钒有限公司 | Production process of 65 Mn spring steel wire rod and 65 Mn spring steel wire rod |
| CN103143563A (en) * | 2013-04-03 | 2013-06-12 | 河北联合大学 | Method for preventing 65 Mn hot rolled steel coil from collapsing by phase-change thermal expansion |
| CN103589948A (en) * | 2013-11-07 | 2014-02-19 | 首钢总公司 | Low-carbon-aluminum killed steel hot-galvanized plate and production method thereof |
| CN103614628A (en) * | 2013-12-12 | 2014-03-05 | 首钢总公司 | 65MnTiB steel and manufacturing method of hot rolled steel plate thereof |
| CN104561731A (en) * | 2014-12-28 | 2015-04-29 | 首钢总公司 | Production method of high-tenacity 65Mn spring steel with uniform whole wire rod property |
| CN105177406A (en) * | 2015-07-23 | 2015-12-23 | 柳州市众力金铭热处理有限公司 | Machining method for high-hardness and high-tenacity 65 Mn steel rod of rod mill |
Non-Patent Citations (5)
| Title |
|---|
| 乐可襄等: "65Mn冷轧带钢表面缺陷分析", 《钢铁研究学报》 * |
| 亓伟伟: "生产工艺对６5Mn冷轧宽钢带力学性能的影响", 《中国冶金》 * |
| 李忆莲: "65Mn弹簧钢带形变超细晶粒处理", 《机械工程材料》 * |
| 李文秀: "《2005中国钢铁年会论文集》", 31 October 2005, 冶金工业出版社 * |
| 谢水生: "《有色金属材料的控制加工》", 31 December 2013, 中南大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557680A (en) * | 2017-08-02 | 2018-01-09 | 包头钢铁（集团）有限责任公司 | Mill coil 65Mn of RE-treated and preparation method thereof |
| CN107649512A (en) * | 2017-09-08 | 2018-02-02 | 新余钢铁股份有限公司 | A kind of manufacturing process of 65Mn cold rollings wide strip |
| CN107649512B (en) * | 2017-09-08 | 2019-01-11 | 新余钢铁股份有限公司 | A kind of manufacturing process of 65Mn cold rolling wide strip |
| CN111979395A (en) * | 2020-07-29 | 2020-11-24 | 苏州翔楼新材料股份有限公司 | Method for processing cold-rolled steel strip for knife saw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109338236B (en) | Easily-welded carbon structural steel based on thin strip casting and rolling and manufacturing method thereof | |
| CN103215516A (en) | 700MPa high strength hot rolling Q&P steel and manufacturing method thereof | |
| RU2014104074A (en) | METHOD FOR PRODUCING FLAT ELECTRICAL STEEL ROLL WITH ORIENTED GRAIN STRUCTURE FOR APPLICATION IN THE ELECTRICAL INDUSTRY | |
| CN105088085A (en) | High-performance cold mill intermediate roll and preparation method thereof | |
| CN106702276A (en) | Manufacturing method for 65Mn steel plate | |
| CN104087734B (en) | A kind of method preparing high-performance Maraging steel steel band | |
| CN115181911B (en) | Super-thick Q500qE bridge steel plate and production method thereof | |
| CN106521311A (en) | Bell-annealing tin plate and preparation method thereof | |
| CN106282766A (en) | The 500MPa pickling steel of low surface roughness and production method thereof | |
| CN107829043A (en) | A kind of near-net forming preparation method of super-duplex stainless steel strip | |
| CN105256225A (en) | Cold-rolled steel plate for elevator and preparation method for cold-rolled steel plate | |
| CN106011543A (en) | Improved type Fe-Co-V alloy and manufacturing method thereof | |
| KR20190071835A (en) | Process for the production of grain-oriented magnetic sheet with a high level of cold reduction | |
| CN103111466A (en) | Oriented silicon steel preparation method by means of double roll continuous casting thin strip asymmetrical hot rolling process | |
| CN109338238B (en) | Low-carbon steel for stamping based on thin strip casting and rolling and manufacturing method thereof | |
| CN102676913B (en) | Cold-rolled steel strip for flux-cored wire and production method of cold-rolled steel strip | |
| CN108620518B (en) | forging method for reducing weight of arched plate forging for coiler mandrel | |
| CN103643122A (en) | 75Cr hot-rolled plate coil produced from thin sheet billets through continuous casting and continuous rolling and production method thereof | |
| CN115261746B (en) | Super-thick Q420qE bridge steel plate and production method thereof | |
| CN105463309B (en) | A kind of production method for eliminating low carbon mild steel cross breaks defect | |
| CN1277937C (en) | Rolling and cogging method for high-temperature alloy GH1015 | |
| CN113492151B (en) | Manufacturing method of iron-nickel-based alloy hot-rolled coil | |
| CN109182907A (en) | A kind of method of endless rolling production half-technique non oriented electrical steel | |
| CN104388832A (en) | Method for manufacturing crankshaft material for ship and crankshaft for ship manufactured by method | |
| CN103820709A (en) | High-strength binding belt with thickness of 1.0 mm and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Applicant before: Capital Iron & Steel General Company |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
|
| RJ01 | Rejection of invention patent application after publication |