CN104018065A - S275JR thick borated steel plate and production method thereof - Google Patents
S275JR thick borated steel plate and production method thereof Download PDFInfo
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Abstract
The invention discloses a S275JR thick borated steel plate which comprises the following chemical components in percentage by weight: 0.13-0.15% of C, 0.2-0.4% of Si, 1.0-1.2% of Mn, less than or equal to 0.02% of P, less than or equal to 0.01% of S, 0.0015-0.003% of Ca, 0.017-0.027% of Als, 0.0011-0.0016% of B and the balance of Fe and impurities. The invention further discloses a production method of the S275JR thick borated steel plate. By adopting a low cost component design, the steel plate with good surface quality can be produced through proper continuous casting, heating, controlled rolling and cold controlling processed by taking cheap silicon and manganese as main alloy elements. The steel plate is simple in production process, short in production period and low in manufacturing cost.
Description
Technical field
The invention belongs to material processing field, particularly the thick specification of a kind of S275JR adds boron plate and production method thereof.
Background technology
S275JR is a kind of structure iron of producing by Europe superscript, is widely used in the every field in production.While producing S275JR, generally all to add boron.And after boron adds, easily there is crackle in steel slab surface, in the situation that slab thickness is certain, the steel plate of thick specification is because compression ratio is little, and the crackle of steel slab surface is difficult to eliminate by rolling, cause the surface of steel plate rolling to have crackle, after surface crack reconditioning, steel plate thickness is usually lower than lower limit, causes the unplanned or degradation of steel plate, even be judged to useless, the qualification rate of steel plate is low.
S275JR adds boron steel except surface quality is not easy to control, and when its thick steel plates rolling, because compression is smaller, rolling is limited to the improvement effect of tissue, usually occurs that mechanical property does not meet the phenomenon of standard-required.For protecting mechanical property, while adopting traditional technology to produce S275JR thick steel plates, be generally after steel plate rolling completes, then steel plate is heat-treated, complex process, the production cycle is longer, and manufacturing cost is high.
Summary of the invention
Technical problem solved by the invention is to provide the thick specification of a kind of S275JR and adds boron plate, and the intensity of steel plate, plasticity, toughness are good.
Technical scheme is as follows:
The thick specification of a kind of S275JR adds boron plate, its chemical composition by weight percentage, comprise: C0.13～0.15%, Si0.2～0.4%, Mn1.0～1.2%, P≤0.02%, S≤0.01%, Ca:0.0015～0.003%, Als0.017～0.027%, B0.0011～0.0016%, surplus is Fe and impurity.
Further, its chemical composition by weight percentage, comprising: C0.13%, Si0.2%, Mn1.0%, P0.02%, S0.005%, Als0.017%, Ca0.0015%, B0.0011%, surplus is Fe and impurity.
Further, its chemical composition by weight percentage, comprising: C0.15%, Si0.4%, Mn1.2%, P0.014%, S0.01%, Als0.027%, Ca0.003%, B0.0016%, surplus is Fe and impurity.
Further, its chemical composition by weight percentage, comprising: C0.14%, Si0.25%, Mn1.08%, P0.013%, S0.007%, Als0.022%, Ca0.0021%, B0.0014%, surplus is Fe and impurity.
Another technical problem solved by the invention is to provide the production method that the thick specification of a kind of S275JR adds boron plate, just can produce the good steel plate of surface quality by suitable continuous casting, heating, controlled rolling, cooling control technology; Production technique is simple, with short production cycle, low cost of manufacture.
Technical scheme is as follows:
The thick specification of S275JR adds a production method for boron plate, and step comprises: smelting, continuous casting, slab reheat, roll forming and laminar flow cooling, wherein,
In casting process, cold a little less than adopting when slab casting, specific water is 0.68L/kg;
Slab reheats in process, adopts the thick continuously cast bloom of 250mm to produce, continuously cast bloom tapping temperature 1180-1220 DEG C, 270～410 minutes heat-up times;
In roll forming process, first stage open rolling thickness is slab thickness, 1170～1210 DEG C of first stage start rolling temperatures, and first stage roll speed is 0.9m/s, single pass draft >=13% when first stage high temperature extends rolling, 3～5 passages of rolling; The open rolling thickness of subordinate phase steel plate is 1.3～2.0 times of finished steel plate thickness, subordinate phase steel plate start rolling temperature is 890～910 DEG C, subordinate phase finishing temperature is 860～880 DEG C, has draft >=13% of a time when subordinate phase rolling at least, 4～6 passages of rolling;
In laminar cooling process, speed of cooling is 5～8 DEG C/s, and final cooling temperature is 690～710 DEG C; The thickness that the thick specification of finished product S275JR adds boron plate is 50mm～100mm, its chemical composition by weight percentage, comprise: C0.13～0.15%, Si0.2～0.4%, Mn1.0～1.2%, P≤0.02%, S≤0.01%, Ca:0.0015～0.003%, Als0.017～0.027%, B0.0011～0.0016%, all the other are iron and impurity.
Further, slab tapping temperature is 1180 DEG C, the heating of plate blank time is 270 minutes, 1170 DEG C of first stage start rolling temperatures, first stage high temperature extends the minimum single pass draft 13% of rolling, first stage roll speed 0.9m/s, subordinate phase open rolling thickness 100mm, 910 DEG C of subordinate phase start rolling temperatures, 860 DEG C of subordinate phase finishing temperatures, 710 DEG C of final cooling temperatures, 8 DEG C/s of speed of cooling, be rolled into the steel plate that thickness is 50mm, its chemical composition by weight percentage, comprise: C0.13%, Si0.2%, Mn1.0%, P0.02%, S0.005%, Als0.017%, Ca0.0015%, B0.0011%, surplus is Fe and impurity.
Further, slab tapping temperature is 1220 DEG C, the heating of plate blank time is 410 minutes, 1210 DEG C of first stage start rolling temperatures, and first stage high temperature extends the minimum single pass draft 13.6% of rolling, first stage roll speed 0.9m/s, subordinate phase open rolling thickness 130mm, 890 DEG C of subordinate phase start rolling temperatures, 871 DEG C of subordinate phase finishing temperatures, 690 DEG C of final cooling temperatures, 5 DEG C/s of speed of cooling; Be rolled into the steel plate that thickness is 100mm, its chemical composition by weight percentage, comprising: C0.13%, Si0.2%, Mn1.0%, P0.02%, S0.005%, Als0.017%, Ca0.0015%, B0.0011%, surplus is Fe and impurity.
Further, slab tapping temperature is 1205 DEG C, the heating of plate blank time is 373 minutes, 1195 DEG C of first stage start rolling temperatures, and first stage high temperature extends the minimum single pass draft 14% of rolling, first stage roll speed 0.9m/s, subordinate phase open rolling thickness 118mm, 905 DEG C of subordinate phase start rolling temperatures, 880 DEG C of subordinate phase finishing temperatures, 682 DEG C of final cooling temperatures, 6 DEG C/s of speed of cooling; Be rolled into the steel plate that thickness is 60mm, its chemical composition by weight percentage, comprising: C0.14%, Si0.25%, Mn1.08%, P0.013%, S0.007%, Als0.022%, Ca0.0021%, B0.0014%, surplus is Fe and impurity.
Further, in smelting and casting process, molten iron adopts the desulfurization of magnesium base, adopts top bottom blowing in converter; Molten steel, through the refining of LF stove, requires S≤0.006% in molten steel; Molten steel carries out the processing of RH stove, is no more than the treatment time under 133Pa is not less than 15 minutes in vacuum tightness; The thickness of continuously cast bloom is 250mm, adopts induction stirring and gently depress when continuous casting, and induction stirring frequency is 6Hz, electric current 260A, and depressing position is 6,7,8 sections, draught is 2mm, 2mm, 2mm.
Compared with prior art, the technology of the present invention effect comprises:
1, the present invention adopts low cost Composition Design, only uses cheap silicon, manganese as main alloying element, just can produce the good steel plate of surface quality by suitable continuous casting, heating, controlled rolling, cooling control technology; Production technique is simple, with short production cycle, low cost of manufacture.
2, the intensity of steel plate, plasticity, toughness are good.The yield strength of steel plate is between 303MPa～350MPa, and tensile strength is between 430MPa～510MPa, and unit elongation is between 25%～33.5%, and 20 DEG C of ballistic works are between 170J～230J.
3, the composition of steel plate and technological design are reasonable, and process system is looser, can be on generous printed line stably manufactured.
4, produce 1.1 ten thousand tons of thick S275JR of 50-100mm with 1 year and add boron plate, 200 yuan of calculating of profit per ton.Within 1 year, can increase by 2,200,000 yuan of profits, there is good economic benefit.Production technique is simple simultaneously, less energy consumption, and fuel consumption is few, and environmental pollution is few, has positive social benefit.
Brief description of the drawings
Fig. 1 is the metallographic structure figure of the steel plate of the embodiment of the present invention 1;
Fig. 2 is the metallographic structure figure of the steel plate of the embodiment of the present invention 2;
Fig. 3 is the metallographic structure figure of the steel plate of the embodiment of the present invention 3.
Embodiment
The present invention adopts low cost Composition Design, only uses cheap silicon, manganese as main alloying element, just can produce the good steel plate of surface quality by suitable continuous casting, heating, controlled rolling, cooling control technology; Production technique is simple, with short production cycle, low cost of manufacture.
The thick specification of S275JR add boron plate production method, concrete steps are as follows:
Step 1: smelt and continuous casting;
(1) molten iron adopts the desulfurization of magnesium base, adopts top bottom blowing in converter;
(2) molten steel, through the refining of LF stove, requires S≤0.006% in molten steel;
(3) molten steel carries out the processing of RH stove, is no more than the treatment time under 133Pa is not less than 15 minutes in vacuum tightness.
(4) thickness of continuously cast bloom is 250mm, adopts induction stirring and gently depress when continuous casting, and induction stirring frequency is 6Hz, electric current 260A, and depressing position is 6,7,8 sections, draught is 2mm, 2mm, 2mm.Adopt induction stirring and light Reduction Technology, object is to reduce steel plate center segregation, improves slab internal soundness.
Cold a little less than adopting when slab casting, specific water is 0.68L/kg.
Step 2: slab reheats;
For ensureing certain compression ratio and slab quality, select the continuously cast bloom that 250mm is thick.Adopt the thick continuously cast bloom (slab) of 250mm to produce, continuously cast bloom tapping temperature 1180-1220 DEG C, 270～410 minutes heat-up times.
Step 3: roll forming technique;
After reheating, slab carries out controlled rolling, first stage (roughing) open rolling thickness is slab thickness, 1170～1210 DEG C of first stage start rolling temperatures, first stage roll speed is 0.9m/s, single pass draft >=13% when first stage high temperature extends rolling, 3～5 passages of rolling; The open rolling thickness of subordinate phase (finish rolling) steel plate is 1.3～2.0 times of finished steel plate thickness, subordinate phase steel plate start rolling temperature is 890～910 DEG C, subordinate phase finishing temperature is 860～880 DEG C, when subordinate phase rolling, has draft >=13% of a time at least, 4～6 passages of rolling.
In the situation that not adding the alloy such as Nb, V, for ensureing that steel plate has higher intensity and good plasticity, toughness, reply steel plate carries out controlled rolling, suitable controlled rolling strategy can fully be eliminated the casting flaw of slab inside, and abundant refine austenite crystal grain, finally obtain tiny ferrite crystal grain, to obtain the steel plate that comprehensive mechanical property is good.This steel grade is adopted to two-stage control rolling, and first stage controlled rolling belongs to the austenite recrystallization controlled rolling of high-temperature zone, and this one-phase adopts low speed, the rolling strategy depressed greatly.Large single pass draft can make distortion fully infiltrate into steel plate center, fully refine austenite crystal grain homogeneous austenite structure, the defects such as loose, the tiny crack of strand inside have been eliminated in the high temperature seam effect that simultaneously rolling produces to a great extent, the density of steel plate is improved, and single pass heavy reduction also helps the seam of micro cracks on surface of steel plate; Temperature when low speed rolling makes the complete temperature of every a time rolling lower than upper a time rolling, because the size of crystal grain after steel plate recrystallization depends primarily on temperature at that time, every like this rolling a time will be carried out refinement in various degree to crystal grain, finally reaches the object of abundant refine austenite crystal grain; While also having rolling, roll speed is low, and resistance to deformation is little, easily realizes larger single pass draft.
After first stage controlled rolling finishes, intermediate blank swings cooling on roller-way, cooling method is natural air cooling, be cooled to subordinate phase start rolling temperature and start rolling, during due to subordinate phase rolling, steel plate is relatively thin, temperature drop is very fast, every a time rolling is complete, the temperature of steel plate all can have decline by a relatively large margin, austenite crystal is by repeatedly broken, recrystallization softening, austenite crystal is finally on rolling refined basis of first stage like this, again by further refinement, and due to after subordinate phase rolls, finishing temperature is lower, austenite crystal is substantially no longer grown up, finally obtain tiny austenite crystal.
Step 4: it is cooling to carry out laminar flow after steel plate rolls, and speed of cooling is 5～8 DEG C/s, and final cooling temperature is 690～710 DEG C.
Austenite crystal is more tiny, its grain boundary area is larger, nucleation site by austenite during to ferritic transformation is just more, nucleation rate is just higher, roll rear employing laminar flow cooling, steel plate is quickly cooled to 690～710 DEG C by finishing temperature, further reduced austenite to ferritic transition temperature, further refinement ferrite crystal grain, finally obtain the steel plate that intensity is suitable, toughness plasticity is good.
The thickness that the thick specification of finished product S275JR adds boron plate is 50mm～100mm, its chemical composition by weight percentage, comprise: C0.13～0.15%, Si0.2～0.4%, Mn1.0～1.2%, P≤0.02%, S≤0.01%, Ca:0.0015～0.003%, Als (acid-soluble aluminium) 0.017～0.027%, B0.0011～0.0016%, all the other are iron and inevitable impurity.
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
Adopting thickness is 250mm slab, slab tapping temperature is 1180 DEG C, the heating of plate blank time is 270 minutes, (weight percent) chemical composition of slab is: C0.13%, Si0.2%, Mn1.0%, P0.02%, S0.005%, Als0.017%, Ca0.0015%, B0.0011%, surplus is Fe and inevitable impurity.Be rolled into the steel plate that thickness is 50mm, detailed rolling and the cold technique of going are in table 1, and its mechanical property is in table 2.Steel plate meets one-level flaw detection requirement.
As shown in Figure 1, be the metallographic structure figure of the steel plate of embodiment in the present invention 1.Can find out from this metallograph, steel plate be organized as ferrite+perlite, ferrite is in the great majority, crystal grain is tiny evenly, there is no mixed crystal phenomenon.Because ferrite is in the great majority, crystal grain is tiny, and ferrite has good plasticity, toughness, and therefore the steel plate of this tissue has good toughness.
Table 1 rolling and process for cooling
Table 2 mechanical property of steel plate
Embodiment 2
Adopting thickness is 250mm slab, slab tapping temperature is 1220 DEG C, the heating of plate blank time is 410 minutes, (weight percent) chemical composition of slab is: C0.15%, Si0.4%, Mn1.2%, P0.014%, S0.01%, Als0.027%, Ca0.003%, B0.0016%, surplus is Fe and inevitable impurity.Be rolled into the steel plate that thickness is 100mm, detailed rolling and the cold technique of going are in table 3, and its mechanical property is in table 4.
As shown in Figure 2, be the metallographic structure figure of the steel plate of embodiment in the present invention 2.Can find out from this metallograph, steel plate be organized as ferrite+perlite, ferrite is in the great majority, tiny evenly along steel plate thickness direction crystal grain, there is no mixed crystal phenomenon.Because ferrite is in the great majority, crystal grain is tiny, and ferrite has good plasticity, toughness, and therefore the steel plate of this tissue has good toughness.
Table 3 rolling and process for cooling
Table 4 mechanical property of steel plate
Embodiment 3
Adopting thickness is 250mm slab, slab tapping temperature is 1205 DEG C, the heating of plate blank time is 373 minutes, (weight percent) chemical composition of slab is: C0.14%, Si0.25%, Mn1.08%, P0.013%, S0.007%, Als0.022%, Ca0.0021%, B0.0014%, surplus is Fe and inevitable impurity.Be rolled into the steel plate that thickness is 60mm, detailed rolling and the cold technique of going are in table 5, and its mechanical property is in table 6.
As shown in Figure 3, be the metallographic structure figure of the steel plate of embodiment in the present invention 3.Can find out from this metallograph, steel plate be organized as ferrite+perlite, ferrite is in the great majority, tiny evenly along steel plate thickness direction crystal grain, there is no mixed crystal phenomenon.Because ferrite is in the great majority, crystal grain is tiny, and ferrite has good plasticity, toughness, and therefore the steel plate of this tissue has good toughness.
Table 5 rolling and process for cooling
Table 6 mechanical property of steel plate
Claims (9)
1. the thick specification of S275JR adds boron plate, it is characterized in that, its chemical composition by weight percentage, comprise: C0.13～0.15%, Si0.2～0.4%, Mn1.0～1.2%, P≤0.02%, S≤0.01%, Ca:0.0015～0.003%, Als0.017～0.027%, B0.0011～0.0016%, surplus is Fe and impurity.
2. the thick specification of S275JR adds boron plate as claimed in claim 1, it is characterized in that, its chemical composition by weight percentage, comprising: C0.13%, Si0.2%, Mn1.0%, P0.02%, S0.005%, Als0.017%, Ca0.0015%, B0.0011%, surplus is Fe and impurity.
3. the thick specification of S275JR adds boron plate as claimed in claim 1, it is characterized in that, its chemical composition by weight percentage, comprising: C0.15%, Si0.4%, Mn1.2%, P0.014%, S0.01%, Als0.027%, Ca0.003%, B0.0016%, surplus is Fe and impurity.
4. the thick specification of S275JR adds boron plate as claimed in claim 1, it is characterized in that, its chemical composition by weight percentage, comprising: C0.14%, Si0.25%, Mn1.08%, P0.013%, S0.007%, Als0.022%, Ca0.0021%, B0.0014%, surplus is Fe and impurity.
5. the thick specification of S275JR adds a production method for boron plate, it is characterized in that, step comprises: smelting, continuous casting, slab reheat, roll forming and laminar flow cooling, wherein,
In casting process, cold a little less than adopting when slab casting, specific water is 0.68L/kg;
Slab reheats in process, adopts the thick continuously cast bloom of 250mm to produce, continuously cast bloom tapping temperature 1180-1220 DEG C, 270～410 minutes heat-up times;
In roll forming process, first stage open rolling thickness is slab thickness, 1170～1210 DEG C of first stage start rolling temperatures, and first stage roll speed is 0.9m/s, single pass draft >=13% when first stage high temperature extends rolling, 3～5 passages of rolling; The open rolling thickness of subordinate phase steel plate is 1.3～2.0 times of finished steel plate thickness, subordinate phase steel plate start rolling temperature is 890～910 DEG C, subordinate phase finishing temperature is 860～880 DEG C, has draft >=13% of a time when subordinate phase rolling at least, 4～6 passages of rolling;
In laminar cooling process, speed of cooling is 5～8 DEG C/s, and final cooling temperature is 690～710 DEG C; The thickness that the thick specification of finished product S275JR adds boron plate is 50mm～100mm, its chemical composition by weight percentage, comprise: C0.13～0.15%, Si0.2～0.4%, Mn1.0～1.2%, P≤0.02%, S≤0.01%, Ca:0.0015～0.003%, Als0.017～0.027%, B0.0011～0.0016%, all the other are iron and impurity.
6. the thick specification of S275JR adds the production method of boron plate as claimed in claim 5, it is characterized in that, slab tapping temperature is 1180 DEG C, the heating of plate blank time is 270 minutes, 1170 DEG C of first stage start rolling temperatures, first stage high temperature extends the minimum single pass draft 13% of rolling, first stage roll speed 0.9m/s, subordinate phase open rolling thickness 100mm, 910 DEG C of subordinate phase start rolling temperatures, 860 DEG C of subordinate phase finishing temperatures, 710 DEG C of final cooling temperatures, 8 DEG C/s of speed of cooling, be rolled into the steel plate that thickness is 50mm, its chemical composition by weight percentage, comprise: C0.13%, Si0.2%, Mn1.0%, P0.02%, S0.005%, Als0.017%, Ca0.0015%, B0.0011%, surplus is Fe and impurity.
7. the thick specification of S275JR adds the production method of boron plate as claimed in claim 5, it is characterized in that, slab tapping temperature is 1220 DEG C, and the heating of plate blank time is 410 minutes, 1210 DEG C of first stage start rolling temperatures, first stage high temperature extends the minimum single pass draft 13.6% of rolling, first stage roll speed 0.9m/s, subordinate phase open rolling thickness 130mm, 890 DEG C of subordinate phase start rolling temperatures, 871 DEG C of subordinate phase finishing temperatures, 690 DEG C of final cooling temperatures, 5 DEG C/s of speed of cooling; Be rolled into the steel plate that thickness is 100mm, its chemical composition by weight percentage, comprising: C0.13%, Si0.2%, Mn1.0%, P0.02%, S0.005%, Als0.017%, Ca0.0015%, B0.0011%, surplus is Fe and impurity.
8. the thick specification of S275JR adds the production method of boron plate as claimed in claim 5, it is characterized in that, slab tapping temperature is 1205 DEG C, and the heating of plate blank time is 373 minutes, 1195 DEG C of first stage start rolling temperatures, first stage high temperature extends the minimum single pass draft 14% of rolling, first stage roll speed 0.9m/s, subordinate phase open rolling thickness 118mm, 905 DEG C of subordinate phase start rolling temperatures, 880 DEG C of subordinate phase finishing temperatures, 682 DEG C of final cooling temperatures, 6 DEG C/s of speed of cooling; Be rolled into the steel plate that thickness is 60mm, its chemical composition by weight percentage, comprising: C0.14%, Si0.25%, Mn1.08%, P0.013%, S0.007%, Als0.022%, Ca0.0021%, B0.0014%, surplus is Fe and impurity.
9. the thick specification of S275JR adds the production method of boron plate as claimed in claim 5, it is characterized in that, smelt and casting process in, molten iron adopts the desulfurization of magnesium base, at converter employing top bottom blowing; Molten steel, through the refining of LF stove, requires S≤0.006% in molten steel; Molten steel carries out the processing of RH stove, is no more than the treatment time under 133Pa is not less than 15 minutes in vacuum tightness; The thickness of continuously cast bloom is 250mm, adopts induction stirring and gently depress when continuous casting, and induction stirring frequency is 6Hz, electric current 260A, and depressing position is 6,7,8 sections, draught is 2mm, 2mm, 2mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270136A (en) * | 2020-02-17 | 2020-06-12 | 本钢板材股份有限公司 | 500 MPa-grade steel for engineering machinery and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61174359A (en) * | 1985-10-18 | 1986-08-06 | Kawasaki Steel Corp | Steel material for oil well pipe having superior resistance to sulfide stress corrosion cracking |
| JP2001026821A (en) * | 1999-07-13 | 2001-01-30 | Nkk Corp | Manufacture of thick steel plate having high toughness and high strength and excellent in shearing property |
| JP2007302908A (en) * | 2006-04-10 | 2007-11-22 | Sumitomo Metal Ind Ltd | High tensile strength steel plate and its manufacturing method |
| CN103014491A (en) * | 2012-12-21 | 2013-04-03 | 首钢总公司 | 600MPa low-alloy and high-strength ultra-thick steel plate and producing method thereof |
-
2014
- 2014-06-18 CN CN201410271655.2A patent/CN104018065B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61174359A (en) * | 1985-10-18 | 1986-08-06 | Kawasaki Steel Corp | Steel material for oil well pipe having superior resistance to sulfide stress corrosion cracking |
| JP2001026821A (en) * | 1999-07-13 | 2001-01-30 | Nkk Corp | Manufacture of thick steel plate having high toughness and high strength and excellent in shearing property |
| JP2007302908A (en) * | 2006-04-10 | 2007-11-22 | Sumitomo Metal Ind Ltd | High tensile strength steel plate and its manufacturing method |
| CN103014491A (en) * | 2012-12-21 | 2013-04-03 | 首钢总公司 | 600MPa low-alloy and high-strength ultra-thick steel plate and producing method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270136A (en) * | 2020-02-17 | 2020-06-12 | 本钢板材股份有限公司 | 500 MPa-grade steel for engineering machinery and preparation method thereof |
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