CN109023115B - hot-rolled template pull sheet steel and manufacturing method thereof - Google Patents
hot-rolled template pull sheet steel and manufacturing method thereof Download PDFInfo
- Publication number
- CN109023115B CN109023115B CN201811151661.9A CN201811151661A CN109023115B CN 109023115 B CN109023115 B CN 109023115B CN 201811151661 A CN201811151661 A CN 201811151661A CN 109023115 B CN109023115 B CN 109023115B
- Authority
- CN
- China
- Prior art keywords
- less
- equal
- steel
- hot
- temperature
- 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.)
- Active
Links
Images
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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D8/0226—Hot rolling
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- 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
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
The invention relates to steel for hot-rolled template pull tabs and a manufacturing method thereof, wherein the steel for the hot-rolled template pull tabs comprises, by weight, 0.22-0.75% of C, 0.17-1.60% of Si, 0.20-1.50% of Mn, 0.50-0.85% of C + Si/3+ Mn/6, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.55% of Cr, less than or equal to 0.55% of Ni, less than or equal to 0.20% of Cu, and the balance of iron and inevitable impurities.
Description
Technical Field
The invention belongs to the technical field of steel manufacturing, and particularly relates to types of steel for hot-rolled template pull tabs and a manufacturing method thereof.
Background
Since the 20 th century and the 80 th century, with the domestic rise of high-rise buildings, the building structure in China is shifted from a brick-concrete structure to a cast-in-place concrete structure with good earthquake resistance and fire resistance, less steel consumption and low cost, and the template technology matched with the cast-in-place concrete structure is also developed at a high speed. The aluminum alloy template is rapidly developed by the advantages of light weight, convenient construction, high turnover rate, friendly environmental resources, good concrete surface quality and the like. The template pull piece is used as an important component of an aluminum alloy template system, plays a role in fixing the template, requires enough strength to prevent the template from shifting and expanding, is convenient to install and dismantle, improves the construction efficiency, is low in price and reduces the construction cost. However, at present, the steel for the template pull sheet is lack of specifications, the purchasing raw materials of enterprises have high randomness, performance fluctuation is large, the template is easy to break on a construction site, the template is displaced and expanded, and even a great safety quality accident of template collapse is caused. Therefore, the development of a novel high-performance low-cost steel for a template pull tab, which has a tensile strength of more than 950MPa and is manufactured at a cost close to that of plain carbon steel such as Q345 hot rolled plate, is urgent.
201410152167.X discloses steel for building template pull tabs and a production process thereof, wherein the steel comprises 0.20-0.30% of C, 0.6-1.0% of Si, 1.2-1.6% of Mn, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.25% of residual element Cr in the steel, less than or equal to 0.30% of Ni, less than or equal to 0.15% of Cu, and the balance of iron and inevitable impurities, the production process comprises (1) smelting end point mass percentages of C more than 0.08%, S less than 0.030% and P less than or equal to 0.020%, and (2) casting blank heating temperature of 1200-1300 ℃, rolling temperature of 1120-1180 ℃, rough rolling seven passes, total reduction rate of 78-82%, final rolling temperature of 870-970 ℃, coiling temperature of-720 ℃, total reduction rate of (3) of 48-52%, strip stamping forming and cold rolling after cold rolling, the scheme adopts the idea of designing the steel for high-low-carbon steel for templates, the steel, the production cost of Si is 1-6.48%, and the reduction rate of the high-cold rolling alloy is ensured.
Disclosure of Invention
The invention aims to solve the technical problem of providing types of steel for hot-rolled template pull tabs and a manufacturing method thereof to realize the manufacturing of the template pull tabs with high performance and low cost aiming at the defects in the prior art.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
hot-rolled template pull-tab steel is provided, which comprises, by weight, 0.22-0.75% of C, 0.17-1.60% of Si, 0.20-1.50% of Mn, 0.50-0.85% of C + Si/3+ Mn/6, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.55% of Cr, less than or equal to 0.55% of Ni, less than or equal to 0.20% of Cu, and the balance of iron and inevitable impurities.
Preferably, the steel for the hot-rolled template pull tab comprises the following chemical components in percentage by weight: c: 0.40-0.70%, Si: 0.17-0.61%, Mn: 0.30-0.75%, 0.50-0.85% of C + Si/3+ Mn/6, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.55% of Cr, less than or equal to 0.55% of Ni, less than or equal to 0.20% of Cu, and the balance of iron and inevitable impurities.
, the steel for the hot-rolled template pull tab preferably comprises, by weight, 0.50-0.65% of C, 0.17-0.37% of Si, 0.36-0.61% of Mn, 0.50-0.85% of C + Si/3+ Mn/6, 0.035% or less of P, 0.035% or less of S, 0.55% or less of Cr, 0.55% or less of Ni, 0.20% or less of Cu, and the balance of iron and inevitable impurities.
The function of each element in the invention is as follows:
carbon mainly plays a role in improving the strength of steel, carbon mainly forms a pearlite structure during hot rolling, the pearlite is subjected to deformation strengthening after cold rolling, partial carbide is decomposed, the carbon permeates into ferrite and strengthens the ferrite through solid solution, the carbon content is too low, the strength does not meet the requirement, and the carbon enters a peritectic zone to easily generate continuous casting billet cracks, meanwhile, the plasticity and the toughness of the steel are reduced due to the increase of carbon element, so that the pulling piece is favorable for the removal work of the pulling piece.
Si is a main deoxidizer, and the content of Si in the steel is more than %, so that the preferable range of Si content is controlled to be 0.17-0.61%, and the further step is limited to be 0.17-0.37%.
Mn is a good deoxidizer and is contained in 0.20-1.50% like , but Mn is easily subjected to center segregation of a plate blank in the continuous casting process to reduce the stamping performance of the material, so that the preferable range of Mn content is 0.30-0.75%, and the further step is limited to be 0.36-0.61%.
C. The three elements of Si and Mn can improve the strength and increase the cold processing hardening, but the efficiency is different, and the effect is obvious when the three elements are mutually matched, so that the control is required to be between 0.50 and 0.85 percent according to the formula C + Si/3+ Mn/6.
The invention also provides a manufacturing method of the steel for the hot-rolled template pull sheet, which mainly comprises the following process steps of steel making, continuous casting, heating, hot rolling, cooling and forming, wherein the process requirements of each stage are as follows:
1) smelting: the steel-making components meet the component design, and the steel-making components are continuously cast into a casting blank, wherein: the continuous casting steel casting temperature is 1499-1542 ℃, and the thickness of the continuous casting billet is 50-150 mm;
2) the continuous casting blank enters a heating furnace before complete austenite transformation, the heating temperature is 1100-1280 ℃, and the time of the casting blank in the furnace is 20-150 min;
3) carrying out 0-4 times of rough rolling in the complete recrystallization area, wherein the reduction rate of each time is 45-55%, the thickness of the final finish rolling is 2.0mm, the reduction rate is less than 10%, and the final rolling temperature is 820-915 ℃;
4) carrying out laminar cooling, coiling and slow cooling, wherein the termination temperature of the laminar cooling is 500-710 ℃, the cooling rate is more than or equal to 30 ℃/s, and the coiling temperature is 500-650 ℃;
5) and (6) stamping and forming.
The hot-rolled template pull sheet steel has the beneficial effects that 1, the steel product for the hot-rolled template pull sheet provided by the invention has the structure of bainite + pearlite or pearlite + ferrite, the yield strength is 821-902 MPa, the tensile strength is 990-1153 MPa, the elongation is 5-7%, 180-degree cold bending cracking is beneficial to the removal of a template and belongs to favorable performance, and the requirements of conventional products like are just opposite, the performance fluctuation among product batches is small, the manufacturing method is beneficial to the processing and manufacturing process of the product, meanwhile, the damage and failure in the using process are reduced, and the use accidents are avoided.2. the manufacturing method realizes that the total manufacturing time from molten iron to a steel plate raw material is shortened from three to five days to 3 hours by short-process steel rolling and laminar cooling control performance, the total production period is shortened from ten days to five days, the manufacturing period is shortened by half, and meanwhile, the process flows of acid pickling, multi-pass cold rolling annealing, spheroidization and the like are reduced by removing the cold rolling process, and the process cost is reduced by.
Drawings
FIG. 1 is an SEM photograph of a hot-rolled sheet steel product for a template tab prepared in example 3 of the present invention;
fig. 2 is an OM view of the hot rolled sheet steel product for template pull as prepared in example 5.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is further described in detail with reference to the attached drawings.
The steel for the hot-rolled template pull tab comprises the following chemical components in percentage by weight: c: 0.22-0.75%, Si: 0.17-1.60%, Mn: 0.20-1.50%, 0.50-0.85% of C + Si/3+ Mn/6, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.55% of Cr, less than or equal to 0.55% of Ni, less than or equal to 0.20% of Cu, and the balance of iron and inevitable impurities.
The manufacturing method comprises the following process steps:
1) smelting: the steel-making components meet the component design, and the steel-making components are continuously cast into a casting blank, wherein: the continuous casting steel casting temperature is 1499-1542 ℃, and the thickness of the continuous casting billet is 50-150 mm;
2) the continuous casting blank enters a heating furnace before complete austenite transformation, the heating temperature is 1100-1280 ℃, and the time of the casting blank in the furnace is 20-150 min;
3) carrying out 0-4 times of rough rolling in the complete recrystallization zone, wherein the reduction rate of each time is 45-55%, the thickness of the final finish rolling is 2.0mm, the reduction rate is less than 10%, and the final rolling temperature is 820-;
4) carrying out laminar cooling, coiling and slow cooling, wherein the termination temperature of the laminar cooling is 500-710 ℃, the cooling rate is more than or equal to 30 ℃/s, and the coiling temperature is 500-650 ℃;
5) and (6) stamping and forming.
Two low-carbon steels and medium-carbon steels were used as comparative examples 1 to 3.
The chemical compositions of the steel for hot-rolled stencil sheets of examples 1 to 6 and comparative examples 1 to 3 are shown in Table 1 (in weight percent), the manufacturing process conditions are shown in Table 2, and the properties of the steel products thus produced are shown in Table 3.
TABLE 1 List of the main components of the steel products prepared in examples 1-6 and comparative examples 1-3
| Steel product | C(％) | Si(％) | Mn(％) | P(％) | S(％) | C+Si/3+Mn/6(％) |
| Example 1 | 0.22 | 1.0 | 1.0 | 0.018 | 0.008 | 0.72 |
| Example 2 | 0.3 | 1.0 | 0.9 | 0.018 | 0.008 | 0.78 |
| Example 3 | 0.4 | 0.61 | 0.75 | 0.018 | 0.008 | 0.73 |
| Example 4 | 0.5 | 0.37 | 0.61 | 0.018 | 0.008 | 0.73 |
| Example 5 | 0.65 | 0.37 | 0.36 | 0.018 | 0.008 | 0.83 |
| Example 6 | 0.7 | 0.17 | 0.30 | 0.018 | 0.008 | 0.81 |
| Comparative example 1 | 0.06 | 0.18 | 0.45 | 0.018 | 0.008 | 0.20 |
| Comparative example 2 | 0.05 | 0.36 | 0.54 | 0.018 | 0.008 | 0.26 |
| Comparative example 3 | 0.4 | 0.17 | 0.20 | 0.018 | 0.008 | 0.49 |
TABLE 2 production Process conditions for examples 1-6 and comparative examples 1-3
TABLE 3 Properties of the Steel products prepared in examples 1-6 and comparative examples 1-3
As shown in fig. 1, which is an SEM photograph of the steel product prepared in example 3, it can be seen that the structure thereof is bainite + pearlite, and the performance requirement that the tensile strength is greater than 950MPa is achieved; as shown in fig. 2, which is an OM diagram of the steel product prepared in example 5, it can be seen that the metallographic structure thereof is pearlite + a small amount of ferrite, and the performance requirement that the tensile strength is greater than 950MPa is also achieved; meanwhile, the steel products can be guaranteed to be smoothly disconnected in the cold bending process, and the smooth process of removing the template after construction is guaranteed. The steel products prepared in comparative examples 1 and 2 can not meet the performance requirements, and the cold bending fracture can not be guaranteed; while comparative example 3 satisfied the cold bend fracture requirements, the performance was slightly lower and failed to meet the strength requirements.
From the above results, the steel product provided by the present embodiment can satisfy the performance and the use requirements, and compared with the prior art, the present embodiment eliminates the cold rolling process in the manufacturing process flow, thereby reducing the processes of pickling, annealing, cold rolling and the like, and realizing the reduction of the manufacturing cycle by half and the reduction of the manufacturing cost by 1000 yuan/ton.
Claims (4)
- The steel for the hot-rolled template pull tab is characterized by comprising, by weight, 0.22-0.75% of C, 0.17-1.60% of Si, 0.20-1.50% of Mn, 0.50-0.85% of C + Si/3+ Mn/6=0.50, less than or equal to 0.035% of P, less than or equal to 0.035% of S, less than or equal to 0.55% of Cr, less than or equal to 0.55% of Ni, less than or equal to 0.20% of Cu, and the balance of iron and inevitable impurities;the manufacturing method mainly comprises the following process steps of steel making, continuous casting, heating, hot rolling, cooling and forming, and the process requirements of each stage are as follows:1) smelting: the steel-making components meet the component design, and the steel-making components are continuously cast into a casting blank, wherein: the continuous casting steel casting temperature is 1499-1542 ℃, and the thickness of the continuous casting billet is 50-150 mm;2) the continuous casting blank enters a heating furnace before complete austenite transformation, the heating temperature is 1100-1280 ℃, and the time of the casting blank in the furnace is 20-150 min;3) carrying out 0-4 times of rough rolling in the complete recrystallization area, wherein the reduction rate of each time is 45-55%, the thickness of the final finish rolling is 2.0mm, the reduction rate is less than 10%, and the final rolling temperature is 820-915 ℃;4) carrying out laminar cooling, coiling and slow cooling, wherein the termination temperature of the laminar cooling is 500-710 ℃, the cooling rate is more than or equal to 30 ℃/s, and the coiling temperature is 500-650 ℃;5) and (6) stamping and forming.
- 2. The steel for a hot-rolled template pull tab according to claim 1, characterized by comprising the following chemical components in percentage by weight: c: 0.40-0.70%, Si: 0.17-0.61%, Mn: 0.30-0.75%, C + Si/3+ Mn/6= 0.50-0.85%, P is less than or equal to 0.035%, S is less than or equal to 0.035%, Cr is less than or equal to 0.55%, Ni is less than or equal to 0.55%, Cu is less than or equal to 0.20%, and the balance of iron and inevitable impurities.
- 3. The steel for hot-rolled template tabs according to claim 2, characterized by comprising the following chemical components in percentage by weight: c: 0.50-0.65%, Si: 0.17 to 0.37%, Mn: 0.36-0.61%, C + Si/3+ Mn/6= 0.50-0.85%, P is less than or equal to 0.035%, S is less than or equal to 0.035%, Cr is less than or equal to 0.55%, Ni is less than or equal to 0.55%, Cu is less than or equal to 0.20%, and the balance of iron and inevitable impurities.
- 4, A method for manufacturing a steel for a hot-rolled form panel as claimed in any of claims 1-3, wherein the main process steps include steel making, continuous casting, heating, hot rolling, cooling and forming, and the process requirements of each stage are as follows:1) smelting: the steel-making components meet the component design, and the steel-making components are continuously cast into a casting blank, wherein: the continuous casting steel casting temperature is 1499-1542 ℃, and the thickness of the continuous casting billet is 50-150 mm;2) the continuous casting blank enters a heating furnace before complete austenite transformation, the heating temperature is 1100-1280 ℃, and the time of the casting blank in the furnace is 20-150 min;3) carrying out 0-4 times of rough rolling in the complete recrystallization area, wherein the reduction rate of each time is 45-55%, the thickness of the final finish rolling is 2.0mm, the reduction rate is less than 10%, and the final rolling temperature is 820-915 ℃;4) carrying out laminar cooling, coiling and slow cooling, wherein the termination temperature of the laminar cooling is 500-710 ℃, the cooling rate is more than or equal to 30 ℃/s, and the coiling temperature is 500-650 ℃;5) and (6) stamping and forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811151661.9A CN109023115B (en) | 2018-09-29 | 2018-09-29 | hot-rolled template pull sheet steel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811151661.9A CN109023115B (en) | 2018-09-29 | 2018-09-29 | hot-rolled template pull sheet steel and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109023115A CN109023115A (en) | 2018-12-18 |
| CN109023115B true CN109023115B (en) | 2020-01-31 |
Family
ID=64615278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811151661.9A Active CN109023115B (en) | 2018-09-29 | 2018-09-29 | hot-rolled template pull sheet steel and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109023115B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778063B (en) * | 2019-01-04 | 2020-09-08 | 武汉钢铁有限公司 | Steel for cold-rolled template pull sheet produced by CSP and method |
| CN109763065A (en) * | 2019-01-04 | 2019-05-17 | 武汉钢铁有限公司 | A kind of template pulling-on piece hot-rolled steel and production method |
| CN110592350A (en) * | 2019-10-23 | 2019-12-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Rolling method of high-strength hot-rolled steel sheet |
| CN110578096B (en) * | 2019-10-24 | 2021-04-30 | 广东韶钢松山股份有限公司 | Non-quenched and tempered steel for crankshaft, crankshaft forging and preparation process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0813033A (en) * | 1994-06-29 | 1996-01-16 | Sumitomo Metal Ind Ltd | Production of high strength hot rolled steel plate |
| CN104561823A (en) * | 2013-10-09 | 2015-04-29 | 宝钢特钢有限公司 | Deep-drawing ultrahigh-strength steel hot-rolled steel plate and manufacture method thereof |
| JP2018121912A (en) * | 2017-02-01 | 2018-08-09 | 日新製鋼株式会社 | Steel sheet for golf club face, golf club face and manufacturing method thereof, and golf club head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103911557B (en) * | 2014-04-16 | 2016-04-06 | 唐山国丰钢铁有限公司 | A kind of building template pulling-on piece steel and production technique thereof |
| CN105063492B (en) * | 2015-08-13 | 2017-10-13 | 武汉钢铁有限公司 | Hot-strip of automobile friction and preparation method thereof |
| CN105002434B (en) * | 2015-08-13 | 2017-06-16 | 武汉钢铁(集团)公司 | Vehicle clutch plate pairing steel sheet hot-strip and preparation method thereof |
| CN106191678B (en) * | 2016-08-24 | 2018-06-26 | 武汉钢铁有限公司 | With the tensile strength >=1700MPa hot formings steel and production method of medium thin slab Direct Rolling |
| CN107779577B (en) * | 2016-08-26 | 2019-04-26 | 鞍钢股份有限公司 | A kind of garden tool set steel that processing performance is excellent and its production method |
-
2018
- 2018-09-29 CN CN201811151661.9A patent/CN109023115B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0813033A (en) * | 1994-06-29 | 1996-01-16 | Sumitomo Metal Ind Ltd | Production of high strength hot rolled steel plate |
| CN104561823A (en) * | 2013-10-09 | 2015-04-29 | 宝钢特钢有限公司 | Deep-drawing ultrahigh-strength steel hot-rolled steel plate and manufacture method thereof |
| JP2018121912A (en) * | 2017-02-01 | 2018-08-09 | 日新製鋼株式会社 | Steel sheet for golf club face, golf club face and manufacturing method thereof, and golf club head |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109023115A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109023115B (en) | hot-rolled template pull sheet steel and manufacturing method thereof | |
| CN101684533A (en) | High strength cold-rolled plate with excellent formability and production method thereof | |
| CN110983193B (en) | 800 MPa-grade high-strength steel based on thin strip casting and rolling and production method thereof | |
| CN110578095A (en) | 1200 MPa-level hot-rolled ultrahigh-strength steel plate and manufacturing method thereof | |
| CN110079728B (en) | High-strength twisted steel with good weldability and manufacturing method thereof | |
| CN105177411A (en) | Boracic cold-rolled enamel steel suitable for continuous annealing production and manufacturing method of boracic cold-rolled enamel steel | |
| CN110578085A (en) | Hot-rolled steel plate with yield strength of 500MPa and atmospheric corrosion resistance | |
| CN108359907A (en) | A kind of high 540MPa grades of hot rolling acid-cleaning strips of reaming performance of no niobium and its production method | |
| CN115323267A (en) | Weather-resistant hot-rolled H-shaped steel for steel structure and production method thereof | |
| CN108728728B (en) | High manganese steel with extremely low yield ratio and manufacturing method thereof | |
| CN100476007C (en) | CSP production process of steel for automobile crossbeam | |
| CN110042300B (en) | Wire rod for 400 MPa-grade weather-resistant stud, production method and prepared stud | |
| CN111363981A (en) | 280 MPa-grade cold-rolled low-alloy structural steel and production method thereof | |
| CN114351045A (en) | Economical refractory hot-rolled steel plate with yield strength of 420MPa and preparation method thereof | |
| CN107723607B (en) | 420 MPa-grade hot-rolled automobile structural steel plate with excellent cold formability and manufacturing method thereof | |
| CN107641762B (en) | 340 MPa-grade hot-rolled automobile structural steel plate with excellent cold formability and manufacturing method thereof | |
| CN109778063B (en) | Steel for cold-rolled template pull sheet produced by CSP and method | |
| CN111471932B (en) | High-strength corrosion-resistant and fire-resistant steel plate, and preparation method and application thereof | |
| CN107641760B (en) | 460 MPa-grade hot-rolled automobile structural steel plate with good fatigue performance and manufacturing method thereof | |
| CN108728740B (en) | Hot-rolled steel strip for low-yield-ratio railway vehicle and production method thereof | |
| CN101348879B (en) | 100mm low alloy high strength ultra heavy plate and manufacturing method thereof | |
| CN113278872B (en) | VN microalloying engineering machinery steel and manufacturing method thereof | |
| CN113667892B (en) | Economical low-temperature continuous annealing cold-rolled high-strength steel strip and production method thereof | |
| CN115074620A (en) | Q345qENH high-performance weather-proof bridge steel and production method thereof | |
| CN115505856A (en) | Preparation method of rare earth treated low-yield-ratio steel Q350EWR1 for railway carriage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |