CN107419174A - Economical high-carbon steel and its manufacture method - Google Patents
Economical high-carbon steel and its manufacture method Download PDFInfo
- Publication number
- CN107419174A CN107419174A CN201710639346.XA CN201710639346A CN107419174A CN 107419174 A CN107419174 A CN 107419174A CN 201710639346 A CN201710639346 A CN 201710639346A CN 107419174 A CN107419174 A CN 107419174A
- Authority
- CN
- China
- Prior art keywords
- carbon steel
- rolling
- stage
- economical high
- 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.)
- Granted
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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- 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
-
- 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
-
- 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 Steel (AREA)
Abstract
The invention discloses a kind of economical high-carbon steel and its manufacture method, the ladle includes following chemical constituent and its percentage by weight：C：0.60~1.00%, Si：0.15~0.35%, Mn：0.10~1.20%, Alt≤0.040%, P≤0.020%, S≤0.010%, remaining is iron and inevitable impurity element.In this method, rolling is divided into three phases：First stage is 1~2 passes, and single pass reduction ratio is 45~60%；Second stage is one-pass roller, and reduction ratio is 35~55%；Phase III is 3~5 passes, and the first percentage pass reduction is 40~65%, and remaining percentage pass reduction is 10~35%；Incubation step, soaking time are 10~30min, and holding temperature is 630~700 DEG C.The product made from steel is organized as uniform granular pearlite tissue, and plasticity and toughness and forming property are excellent, and the manufacturing cycle is greatly shortened, and reduce manufacturing cost, improves product lumber recovery.
Description
Technical field
The present invention relates to metallurgical technology, in particular to a kind of economical high-carbon steel and its manufacture method.
Background technology
High-carbon steel has good plasticity and forming property after spheroidizing, have after quenched high intensity, high rigidity,
High-wearing feature and good fatigue life, therefore, high-carbon steel are used for the shapes such as manufacture spring, valve block, safety buckle, chain and answered
Miscellaneous miniature precision parts, are widely used in the key industries such as machinery, automobile, new and high technology.
To meet precision parts to raw material Thin Specs, the requirement of high-ductility, high formability energy, high-carbon steel manufacturing process
It is often superfluous long and complex, including the multiple working procedure such as hot rolling, pickling, cold rolling, annealing, the manufacturing cycle is longer, energy resource consumption is high, manufacture
Cost is high.In recent years, many enterprises attempted to produce high-carbon steel in CSP producing line, and on the one hand the producing line has inclined
The advantages that analysis is light, decarburization is shallow, plate shape is good, another aspect product specification is thin, alternative part cold-rolled products on thickness, but due to adopting
The hot-rolled product produced with pair rolling method is organized as sheet pearlite, is also difficult to obtain uniformly by long term annealing
Granular pearlite tissue, cause the quality problems such as easily cracked during post forming, the damage grinding tool of product.
In recent years, the domestic spheroidizing of exempting to medium and high carbon steel had carried out many work, to shorten technological process.China
Patent application CN 101029351A disclose a kind of method for producing medium-carbon steel deformation induced ferrite, during it is directed to
Carbon steel (composition C：0.32~0.38；Si：0.10~0.30；Mn：0.40~0.80；P≤0.025；S≤0.015；Als≥
0.015) continuous rolling process, 50~80% under 680~850 DEG C of temperatures, rate of deformation 10, are controlled using four frame low temperature
~30/s, 660~700 DEG C of section rapid phase transitions are then cooled to 0.2~15 DEG C/s cooling velocity, ferrite contains after phase transformation
Amount is up to 60~65%, and pearlite is degenerated, and this method is mainly separated out by deformation induced ferrite improves plasticity, but pearly-lustre
Carbide still has part in the form of sheets in body.Exempt from nodularization in addition, Chinese patent application CN201210179243.7 discloses one kind and move back
The manufacture method of the high-quality high-strength cold-forging steel of fire, it is C for chemical composition：0.25~0.40%, Mn：0.45~0.85%,
Si：0.05~0.35%, Cr：0.70~1.45%, Mo：0.03~0.45%, Alt：0.015~0.030% steel grade,
Enter cover slow cooling after 650~800 DEG C, cooling rate is 0.2~0.7 DEG C/s in cover, and this method uses residual heat annealing, reduces annealing and adds
The consumption of heat, but cool time is long, and production efficiency is relatively low, and equipment turnover rate is relatively low.
The content of the invention
Present invention aim to provide a kind of economical high-carbon steel and its manufacture method, the product made from steel is organized as uniformly
Granular pearlite tissue, plasticity and toughness and forming property are excellent, and the manufacturing cycle is greatly shortened, and reduce manufacturing cost, carry
High product lumber recovery.
To achieve the above object, the technical solution adopted by the present invention is：A kind of economical high-carbon steel, the ladle include followingization
Learn component and its percentage by weight：C：0.60~1.00%, Si：0.15~0.35%, Mn：0.10~1.20%, Alt≤
0.040%, P≤0.020%, S≤0.010%, remaining is iron and inevitable impurity element.
Further, the ladle includes following chemical constituent and its percentage by weight：C：0.68~1.00%, Si：0.17~
0.30%, Mn：0.37~1.20%, Cr：0.10~1.10%, Alt：0.019~0.04%, P：0.011~0.02%, S：
0.001~0.01%, remaining is iron and inevitable impurity element.
Further, the ladle includes following chemical constituent and its percentage by weight：C：0.75~0.85%, Si：0.17
~0.20%, Mn：0.40~0.70%, Cr：0.20~1.10%, Alt：0.019~0.025%, P：0.015~
0.017%, S：0.003~0.005%, remaining is iron and inevitable impurity element.
A kind of manufacture method of above-mentioned economical high-carbon steel, include smelting successively, continuous casting, heat, rolling, incubation step；
The rolling is divided into three phases：First stage is 1~2 passes, and single pass reduction ratio is 45~60%；Second stage is
One-pass roller, reduction ratio are 35~55%；Phase III is 3~5 passes, and the first percentage pass reduction is 40~65%,
Remaining percentage pass reduction is 10~35%；The incubation step, soaking time are 10~30min, and holding temperature is 630~700
℃。
Further, the milling step, first stage rolling temperature are 970~1080 DEG C, second stage rolling temperature
It it is 630~730 DEG C for 850~950 DEG C, phase III rolling temperature.
Further, the continuous casting step, slab thickness are 55~110mm.
Further, the milling step, mill speed are 0.5~15m/s, second stage to phase III cooling velocity
≥20℃/s。
Further, the heating stepses, heating-up temperature are 1150~1250 DEG C.
Further, the milling step, the single pass reduction ratio of first stage rolling is 53~60%；Phase III
It is 55~65% to roll as 3 passes, the first percentage pass reduction, and remaining percentage pass reduction is to roll 25~35% or phase III
4 passes are made as, the first percentage pass reduction is 55~65%, and remaining percentage pass reduction is 20~30%, or the phase III rolls
5 passes are made as, the first percentage pass reduction is 55~65%, and remaining percentage pass reduction is 15~25%.
Further, the milling step, first stage rolling temperature is 1000~1050 DEG C DEG C, second stage rolls
Temperature is 850~900 DEG C, phase III rolling temperature is 630~700 DEG C；The incubation step, holding temperature are 700~730
℃。
Compared with prior art, the present invention has advantages below：
First, the present invention promotes austenite perfect recrystallization by first stage heavy reduction, the tiny Austria of crystal grain is obtained
Family name's body crystal grain；Austenite is deformed by second stage pressure, be pearl in austenite crystal the defects of generation dislocation, room
The generation of body of light provides more nucleation sites；Austenite is set directly to turn in deformation process by phase III low temperature heavy reduction
It is changed into granular pearlite；By the isothermal treatment for short time after rolling, promote ferrite crystal grain and carbide particle agglomeration, make the sense of organization
Can be more uniform.
Second, the present invention uses sheet billet the most thin reachable 1.0mm of finished product thickness, to be made as strand raw material using the present invention
The method of making need not carry out annealing and be achieved with uniform granular pearlite tissue, and product possesses good plasticity and forming property,
High-carbon steel can be achieved, and " with hot Dai Leng ", plasticity and toughness and forming property are excellent, and significantly shorten the manufacturing cycle, reduce and are manufactured into
This, improves product lumber recovery.
Third, the present invention instead of long-time bell-type annealing or bell-type insulation in conventional production practices using isothermal treatment for short time
(being up to tens hours), can effectively mitigate decarburization phenomenon, improve case hardness and the fatigue life of product.
Brief description of the drawings
Fig. 1 is the tissue using the high-carbon steel hot-rolled product of pair rolling method production.
Fig. 2 is the tissue after long term annealing using the high-carbon steel hot-rolled product of pair rolling method production.
Fig. 3 is the tissue for the high-carbon steel hot-rolled product that embodiment 1 manufactures.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, is easy to more clearly understand this
Invention, but they do not form to the present invention and limited.
Embodiment 1
A kind of economical high-carbon steel 65Mn, chemical composition C：0.70wt.%, Si:0.27wt.%, Mn:
1.20wt.%, P：0.012wt.%, S：0.001wt.%, Alt：0.021% remaining be Fe and inevitable impurity.
Preparation process is as follows：Slab thickness is 55mm, and heating-up temperature is 1150 DEG C, and strand rolling is divided into 7 passages, wherein the
One stage was 1 passage, and second stage is one-pass roller, and the phase III is 5 passages, the rolling temperature of each passage, reduction ratio, was rolled
The main rolling technological parameter such as speed processed is as shown in table 1.
Table 1
Obtained product thickness is 1.0mm, and after 700 DEG C are incubated 30min, product hardness 161HV, yield strength is
415MPa, tensile strength 578MPa, elongation percentage 37%；As shown in figure 3, the product made from steel is organized as uniform granular pearlite
Tissue so that product plasticity and toughness and forming property are excellent；And Fig. 1 is the high-carbon steel hot-rolled product produced using pair rolling method
Tissue, Fig. 2 is then using tissue of the high-carbon steel hot-rolled product after long term annealing of pair rolling method production, Fig. 1
Substantially it is not so good as the uniform, fine and closely woven of the present invention with the metallographic structure shown in Fig. 2.
Embodiment 2
A kind of economical high-carbon steel S75C, chemical composition C：0.75wt.%, Si:0.20wt.%, Mn:
0.70wt.%, P：0.015wt.%, S：0.003wt.%, Alt：0.025%, remaining is Fe and inevitable impurity.
Preparation process is as follows：Slab thickness is 75mm, and heating-up temperature is 1200 DEG C, and strand rolling is divided into 6 passages, wherein the
One stage was 1 passage, and second stage is one-pass roller, and the phase III is 4 passages, the rolling temperature of each passage, reduction ratio, was rolled
The main rolling technological parameter such as speed processed is as shown in table 2.
Table 2
Obtained product thickness is 2.8mm, and after 630 DEG C are incubated 20min, product hardness 191HV, yield strength is
571MPa, tensile strength 713MPa, elongation percentage 28%.
Embodiment 3
A kind of economical high-carbon steel SK85, chemical composition C：0.85wt.%, Si:0.17wt.%, Mn:
0.40wt.%, Cr:0.20wt.%, P:0.017wt.%, S：0.005wt.%, Alt：0.019%, remaining is Fe and can not kept away
The impurity exempted from.
Manufacturing process is as follows：Slab thickness is 110mm, and heating-up temperature is 1250 DEG C, and strand rolling is divided into 6 passages, wherein
First stage is 2 passages, and second stage is one-pass roller, and the phase III is 3 passages, the rolling temperature of each passage, reduction ratio,
The main rolling technological parameter such as mill speed is as shown in table 3.
Table 3
Obtained product thickness is 2.6mm, and after 670 DEG C are incubated 15min, product hardness 184HV, yield strength is
564MPa, tensile strength 697MPa, elongation percentage 31%.
Embodiment 4
A kind of economical high-carbon steel SK95, chemical composition C:1.00wt.%, Si:0.30wt.%, Mn:
0.50wt.%, Cr:0.17wt.%, P:0.020wt.%, S：0.010wt.%, Alt：0.030%, remaining is Fe and can not kept away
The impurity exempted from.
Preparation process is as follows：Slab thickness is 70mm, and heating-up temperature is 1190 DEG C, and strand rolling is divided into 5 passages, wherein the
One stage was 1 passage, and second stage is one-pass roller, and the phase III is 3 passages, the rolling temperature of each passage, reduction ratio, was rolled
The main rolling technological parameter such as speed processed is as shown in table 4.
Table 4
Obtained product thickness is 2.56mm, after 690 DEG C are incubated 24min, product hardness 175HV, and yield strength
For 547MPa, tensile strength 673MPa, elongation percentage 34%.
Embodiment 5
A kind of economical high-carbon steel 65Mn, chemical composition C：0.68wt.%, Si:0.25wt.%, Mn:
1.00wt.%, P：0.011wt.%, S：0.004wt.%, Alt：0.035% remaining be Fe and inevitable impurity.
Manufacturing process is as follows：Slab thickness is 65mm, and heating-up temperature is 1210 DEG C, and strand rolling is divided into 7 passages, wherein the
One stage was 2 passages, and second stage is one-pass roller, and the phase III is 4 passages, the rolling temperature of each passage, reduction ratio, was rolled
The main rolling technological parameter such as speed processed is as shown in table 5.
Table 5
Manufacturing process is as follows：Product thickness is 2.44mm, after 670 DEG C are incubated 25min, product hardness 174HV, is bent
It is 482MPa to take intensity, tensile strength 614MPa, elongation percentage 33%.
Embodiment 6
A kind of economical high-carbon steel S75C, chemical composition C：0.80wt.%, Si:0.26wt.%, Mn:
0.80wt.%, P：0.014wt.%, S：0.007wt.%, Alt：0.040%, remaining is Fe and inevitable impurity.
Manufacturing process is as follows：Slab thickness is 90mm, and heating-up temperature is 1205 DEG C, and strand rolling is divided into 8 passages, wherein the
One stage was 2 passages, and second stage is one-pass roller, and the phase III is 5 passages, the rolling temperature of each passage, reduction ratio, was rolled
The main rolling technological parameter such as speed processed is as shown in table 6.
Table 6
Obtained product thickness is 2.64mm, after 710 DEG C are incubated 21min, product hardness 177HV, and yield strength
For 485MPa, tensile strength 628MPa, elongation percentage 30%.
Embodiment 7
A kind of economical high-carbon steel SK85, chemical composition C：0.87wt.%, Si:0.24wt.%, Mn:
0.37wt.%, P：0.017wt.%, S：0.003wt.%, Alt：0.031%, remaining is Fe and inevitable impurity.
Manufacturing process is as follows：Slab thickness is 76mm, and heating-up temperature is 1230 DEG C, and strand rolling is divided into 8 passages, wherein the
One stage was 2 passages, and second stage is one-pass roller, and the phase III is 5 passages, the rolling temperature of each passage, reduction ratio, was rolled
The main rolling technological parameter such as speed processed is as shown in table 7.
Table 7
Obtained product thickness is 1.2mm, and after 730 DEG C are incubated 27min, product hardness 165HV, yield strength is
430MPa, tensile strength 591MPa, elongation percentage 33%.
Claims (10)
- A kind of 1. economical high-carbon steel, it is characterised in that：The ladle includes following chemical constituent and its percentage by weight：C：0.60~ 1.00%, Si：0.15~0.35%, Mn：0.10~1.20%, Alt≤0.040%, P≤0.020%, S≤0.010%, its Yu Weitie and inevitable impurity element.
- 2. economical high-carbon steel according to claim 1, it is characterised in that：The ladle includes following chemical constituent and its weight hundred Divide ratio：C：0.68~1.00%, Si：0.17~0.30%, Mn：0.37~1.20%, Cr：0.10~1.10%, Alt：0.019 ~0.04%, P：0.011~0.02%, S：0.001~0.01%, remaining is iron and inevitable impurity element.
- 3. economical high-carbon steel according to claim 1, it is characterised in that：The ladle includes following chemical constituent and its weight hundred Divide ratio：C：0.75~0.85%, Si：0.17~0.20%, Mn：0.40~0.70%, Cr：0.20~1.10%, Alt：0.019 ~0.025%, P：0.015~0.017%, S：0.003~0.005%, remaining is iron and inevitable impurity element.
- A kind of 4. manufacture method of economical high-carbon steel as claimed in claim 1, it is characterised in that：Include smelting successively, continuous casting, Heating, rolling, incubation step；The rolling is divided into three phases：First stage is 1~2 passes, and single pass reduction ratio is 45~60%；Second stage is one-pass roller, and reduction ratio is 35~55%；Phase III is 3~5 passes, first Secondary reduction ratio is 40~65%, and remaining percentage pass reduction is 10~35%；The incubation step, soaking time are 10~30min, Holding temperature is 630~700 DEG C.
- 5. the manufacture method of economical high-carbon steel according to claim 4, it is characterised in that：The milling step, first Stage rolling temperature is 970~1080 DEG C, second stage rolling temperature is 850~950 DEG C, phase III rolling temperature is 630 ~730 DEG C.
- 6. the manufacture method of the economical high-carbon steel according to claim 4 or 5, it is characterised in that：The continuous casting step, casting Base thickness is 55~110mm.
- 7. the manufacture method of the economical high-carbon steel according to claim 4 or 5, it is characterised in that：The milling step, rolls Speed processed is 0.5~15m/s, second stage to phase III cooling velocity >=20 DEG C/s.
- 8. the manufacture method of the economical high-carbon steel according to claim 4 or 5, it is characterised in that：The heating stepses, add Hot temperature is 1150~1250 DEG C.
- 9. the manufacture method of the economical high-carbon steel according to claim 4 or 5, it is characterised in that：The milling step, the The single pass reduction ratio of one stage rolling is 53~60%；Phase III rolling is 3 passes, and the first percentage pass reduction is 55 ~65%, remaining percentage pass reduction is 25~35% or phase III rolling is 4 passes, the first percentage pass reduction is 55~ 65%, remaining percentage pass reduction is 20~30%, or phase III rolling be 5 passes, the first percentage pass reduction for 55~ 65%, remaining percentage pass reduction is 15~25%.
- 10. the manufacture method of the economical high-carbon steel according to claim 4 or 5, it is characterised in that：The milling step, First stage rolling temperature is 1000~1050 DEG C DEG C, second stage rolling temperature is 850~900 DEG C, phase III rolling temperature Spend for 630~700 DEG C；The incubation step, holding temperature are 700~730 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710639346.XA CN107419174B (en) | 2017-07-31 | 2017-07-31 | Economical high-carbon steel and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710639346.XA CN107419174B (en) | 2017-07-31 | 2017-07-31 | Economical high-carbon steel and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107419174A true CN107419174A (en) | 2017-12-01 |
| CN107419174B CN107419174B (en) | 2019-06-18 |
Family
ID=60431496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710639346.XA Active CN107419174B (en) | 2017-07-31 | 2017-07-31 | Economical high-carbon steel and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107419174B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763590A (en) * | 2021-01-11 | 2022-07-19 | 宝山钢铁股份有限公司 | Wear-resistant steel with high uniform elongation and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609253A (en) * | 2003-10-21 | 2005-04-27 | 酒泉钢铁(集团)有限责任公司 | Micro-alloyed high-carbon steel and application thereof |
| CN104099520A (en) * | 2014-07-14 | 2014-10-15 | 首钢总公司 | High-carbon and low-alloy saw blade steel and production method of hot-rolled steel plate thereof |
| CN106755870A (en) * | 2017-01-11 | 2017-05-31 | 唐山钢铁集团有限责任公司 | A kind of production method of think gauge medium and high carbon steel sheet material |
-
2017
- 2017-07-31 CN CN201710639346.XA patent/CN107419174B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609253A (en) * | 2003-10-21 | 2005-04-27 | 酒泉钢铁(集团)有限责任公司 | Micro-alloyed high-carbon steel and application thereof |
| CN104099520A (en) * | 2014-07-14 | 2014-10-15 | 首钢总公司 | High-carbon and low-alloy saw blade steel and production method of hot-rolled steel plate thereof |
| CN106755870A (en) * | 2017-01-11 | 2017-05-31 | 唐山钢铁集团有限责任公司 | A kind of production method of think gauge medium and high carbon steel sheet material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763590A (en) * | 2021-01-11 | 2022-07-19 | 宝山钢铁股份有限公司 | Wear-resistant steel with high uniform elongation and manufacturing method thereof |
| CN114763590B (en) * | 2021-01-11 | 2023-03-14 | 宝山钢铁股份有限公司 | Wear-resistant steel with high uniform elongation and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107419174B (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110904319B (en) | Manufacturing process of high-carbon tool steel SK85 cold-rolled wide steel strip | |
| CN106319368B (en) | A kind of economical thin carrier bar and its manufacture method | |
| CN110306123A (en) | A kind of tensile strength >=1800MPa grades of high-toughness hot forming steel and its production method | |
| CN107012398B (en) | A kind of Nb-microalloying TRIP steel and preparation method thereof | |
| CN108754319A (en) | Using the tensile strength >=1800MPa grades of hot forming steel and method of the production of ESP producing lines | |
| CN114012056B (en) | 1500 MPa-level hot forming steel and preparation method thereof | |
| CN106191682B (en) | A kind of easy-open end draw ring cold rolling hot-dip galvanized steel sheet and its production method | |
| CN106256918A (en) | The Automobile flywheel cold-strip steel of a kind of precision stamping processing and manufacture method thereof | |
| CN106636931B (en) | A kind of preparation method containing δ-ferritic TRIP steel | |
| CN105441786A (en) | Sheet steel with tensile strength of 1500 MPa levels and used for hot stamping forming and cast steel plate (CSP) production method thereof | |
| CN105274431B (en) | The hot-strip blade and its manufacture method of a kind of suitable water quenching | |
| CN113846266A (en) | Production method of high-ductility and toughness quenched and tempered steel plate with yield strength of 1300MPa | |
| CN106834941A (en) | A kind of hot press-formed steel and its production method | |
| CN111893396B (en) | High-strength medium manganese steel and preparation method thereof | |
| CN113088813A (en) | Steel for hot-rolled saw blade and production method thereof | |
| CN110964882B (en) | One-steel dual-purpose cold-rolled high-strength steel based on carbon distribution process and manufacturing method thereof | |
| CN109609729A (en) | A kind of yield strength 650MPa grades of stainless steel plates and manufacturing method | |
| US20240167138A1 (en) | Dual-phase steel and hot-dip galvanized dual-phase steel having tensile strength greater than or equal to 980mpa and method for manufacturing same by means of rapid heat treatment | |
| CN106498297A (en) | Precision stamping automotive seat actuator fluted disc cold-rolled steel sheet and its manufacture method | |
| CN109136759A (en) | Spoke 1300MPa grades of hot forming steel of think gauge and preparation method | |
| CN107419174B (en) | Economical high-carbon steel and its manufacturing method | |
| CN116900178A (en) | Advanced hot stamping forming method of high Cr-Si alloying plating-free hot forming steel | |
| CN110499460A (en) | A kind of heat stamping and shaping cold-rolled strip and its production method | |
| CN107385348A (en) | A kind of precision stamping cold-rolled steel sheet and its manufacture method | |
| CN105251783B (en) | Flexible production method integrating mechanical performance and scale structure control |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |