CN103911556A - Hot work die steel material and preparation method thereof - Google Patents

Hot work die steel material and preparation method thereof Download PDF

Info

Publication number
CN103911556A
CN103911556A CN201410122841.XA CN201410122841A CN103911556A CN 103911556 A CN103911556 A CN 103911556A CN 201410122841 A CN201410122841 A CN 201410122841A CN 103911556 A CN103911556 A CN 103911556A
Authority
CN
China
Prior art keywords
hot
steel material
work die
die steel
surplus
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
Application number
CN201410122841.XA
Other languages
Chinese (zh)
Other versions
CN103911556B (en
Inventor
李占春
曲景春
许民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Lianfeng Energy Equipment Co Ltd
Original Assignee
Jiangsu Lianfeng Energy Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Lianfeng Energy Equipment Co Ltd filed Critical Jiangsu Lianfeng Energy Equipment Co Ltd
Priority to CN201410122841.XA priority Critical patent/CN103911556B/en
Publication of CN103911556A publication Critical patent/CN103911556A/en
Application granted granted Critical
Publication of CN103911556B publication Critical patent/CN103911556B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention provides a hot work die steel material and a production process thereof. The hot work die steel material is characterized by comprising the following chemical components in percentage by weight: 0.36-0.44% of C, 0.10-0.25% of Ti, 0.10-0.50% of Mn, 0.15-0.20% of Nb, 5.0-5.5% of Cr, 0.20-0.25% of Mo, 1.0-1.5% of V, 0.10-0.15% of B, 1.50-2.00% of W, 0.50-0.70% of Si, less than or equal to 0.025% of S, less than or equal to 0.020% of P and the balance of Fe. The hot work die steel material has the characteristics of high tempering resistance and high thermal fatigue resistance.

Description

A kind of hot-work die steel material and preparation method thereof
Technical field
The invention belongs to metallic substance and processing technique field, particularly mould manufacture and use range, relates to a kind of hot-work die steel and manufacture craft thereof.
Background technology
Mould, is industrial fundamental technology equipment, and in the products such as electronics, automobile, motor, electrical equipment, instrument, household electrical appliances and communication, 60~80% component all rely on mould molding, and therefore mould is called as " mothers of all trades ".Along with Die & Mould Market development year by year expands, the consumption of the material-die steel of production mould is also in remarkable increase, and wherein the consumption of hot-work die steel accounts for the more than 30% of Die Steel Products.Hot-work die steel is suitable to hardness requirement, lays particular emphasis on red hardness, thermal conductivity, wear resistance.Therefore carbon content is low, and alloying element is to increase hardening capacity, and raising wear resistance, red hardness are main.Along with developing rapidly of mould industry, work-ing life, working accuracy to hot-work die have proposed requirements at the higher level.The quality of hot-work die steel performance and the length in work-ing life, will directly affect the quality of converted products and the economic benefit of production.So novel hot forming dies materials being is all constantly is being researched and developed in countries in the world, the conventional hot-work die of China, as and 5CrNiMo, 5CrMnMo poor heat resistance, 3Cr2W8V (H21) steel, exists carbide segregation serious, the problems such as plasticity, toughness, thermal conductivity, cold-and-heat resistent fatigue property and anti-corrosion poor-performing, used H13 steel (4Cr5MoSiV1) New Hot Work Die Steel, the problem such as while mould in earlier stage use, cracking behavior tendency is large, and mould repair rate is low.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of hot-work die steel material and manufacture craft thereof, makes the hot-work die steel material of preparation, has temper resistance high, the feature that thermal fatigue resistance is high.
Hot-work die steel material of the present invention, is characterized in that the weight percent of hot-work die steel material chemical composition consists of:
C:0.36-0.44 Ti:0.10-0.25 Mn:0.10-0.50 Nb: 0.15-0.20
Cr :5.0-5.5 Mo: 0.20-0.25 V : 1.0-1.5 B: 0.10-0.15
W:1.50-2.00 Si:0.50-0.70 S≤0.025 P≤0.020
Surplus is Fe.
The weight percent of preferred hot-work die steel material chemical composition consists of:
C:0.38-0.40 Ti:0.15-0.20 Mn:0.40-0.50 Nb: 0.15-0.17
Cr :5.0-5.5 Mo: 0.22-0.25 V : 1.0-1.2 B: 0.12-0.15
W:1.50-2.00 Si:0.50-0.60 S≤0.020 P≤0.010
Surplus is Fe.
The manufacture craft of above-mentioned hot-work die steel material, comprises the steps:
(1) smelting technology: adopt ordinary method melting, take the raw material of formula ratio, except Cr, Nb, Mo and B, other are all placed in, when melting to 1/3, Cr, the Nb, Mo and the B that put into formula ratio continue melting and form molten steel at 1560~1700 ℃;
(2) molten steel is cast as steel ingot: ingot mold preheating, inject molten steel, and be incubated 5~6 hours, make composition of steel homogenizing, after the demoulding, Slow cooling carries out anneal, and speed of cooling≤25 ℃/h, to 500~550 ℃;
(3) forge or be rolled into section bar: by gained Heating Steel Ingots to 100 ℃~1150 ℃ and thoroughly burn down full beginning and forge, again calcine for 850 ℃;
(4) section bar carbide annealing process: then at 830 ℃, 60~80 ℃/h of heat-up rates, are incubated 8 hours; Cool to 750 ℃ with the furnace, anneal 8 hours, to remove the stress producing in forging process, finally cool to 500~550 ℃ with the furnace, the air cooling of coming out of the stove, surface finish.
Hot-work die steel material of the present invention, the mechanism of action of Partial Elements:
(1) Si: silicon can significantly improve the elastic limit of steel, yield-point and tensile strength, make spring steel therefore be widely used in.In modified structure iron, add the silicon of 1.0-1.2%, intensity can improve 15-20%.The combinations such as silicon and molybdenum, tungsten, chromium, are improved erosion resistance and oxidation resistant effect, can manufacture high temperature steel.
(2) Mn: in steelmaking process, manganese is good reductor and sweetening agent, and the steel of more general steel amount not only has enough toughness, and has higher intensity and hardness, improves the quenching property of steel, improves the hot workability of steel.
(3) B: add micro-boron just can improve compactness and the hot rolling performance of steel in steel, improve intensity.
(4) Cr: in structure iron and tool steel, chromium can significantly improve intensity, hardness and wear resistance, but reduce plasticity and toughness simultaneously.Chromium can improve again oxidation-resistance and the erosion resistance of steel, because of but stainless steel, the important alloying element of high temperature steel.
(5) Mo: molybdenum can make the grain refining of steel, improves hardening capacity and thermostrength, keeps enough intensity and creep resisting abilities (be at high temperature subject to for a long time stress, deform, claim creep) in the time of high temperature.
(6) Nb: superheated susceptivity and the temper brittleness of energy crystal grain thinning and reduction steel, improve intensity, but plasticity and toughness decline to some extent.In ordinary low-alloy steel, add niobium, can improve anti-hydrogen under weather-resistant and high temperature, nitrogen, ammonia corrosion ability.Niobium can improve welding property.
By the adjustment of formula of the present invention and technique, prepared hot-work die steel material Heat stability is good, thermal fatigue resistance is high, long service life, and cost performance is high, widely applicable.
Embodiment
Below in conjunction with embodiment, the present invention is described further.
Embodiment 1
A kind of die steel material, the weight percent of chemical composition consists of:
C:0.36 Ti:0.10 Mn:0.10 Nb: 0.15
Cr:5.0 Mo: 0.20 V : 1.0 B: 0.10
W:1.50 Si:0.500 S≤0.025 P≤0.020
Surplus is Fe.
Embodiment 2
A kind of die steel material, the weight percent of chemical composition consists of:
C: 0.44 Ti: 0.25 Mn: 0.50 Nb: 0.20
Cr : 5.5 Mo: 0.25 V : 1.5 B: 0.15
W: 2.00 Si: 0.70 S≤0.025 P≤0.020
Surplus is Fe.
Embodiment 3
A kind of die steel material, the weight percent of chemical composition consists of:
C:0.38 Ti:0.15 Mn:0.40 Nb: 0.15
Cr :5.0 Mo: 0.22 V : 1.0 B: 0.12
W:1.50 Si:0.50 S≤0.020 P≤0.010
Surplus is Fe.
Embodiment 4
A kind of die steel material, the weight percent of chemical composition consists of:
C: 0.40 Ti: 0.20 Mn: 0.50 Nb: 0.17
Cr : 5.5 Mo: 0.25 V : 1.2 B: 0.15
W: 2.00 Si: 0.60 S≤0.020 P≤0.010
Surplus is Fe.
Embodiment 5
The preparation technology of the die steel described in embodiment 1-4 any one, comprises the steps:
(1) smelting technology: adopt ordinary method melting, take the raw material of formula ratio, except Cr, Nb, Mo and B, other are all placed in, when melting to 1/3, Cr, the Nb, Mo and the B that put into formula ratio continue melting and form molten steel at 1560 ℃;
(2) molten steel is cast as steel ingot: ingot mold preheating, inject molten steel, and be incubated 5 hours, make composition of steel homogenizing, after the demoulding, Slow cooling carries out anneal, and speed of cooling≤25 ℃/h, to 500 ℃;
(3) forge or be rolled into section bar: by ℃ ℃ also full forging of beginning of burning-out thoroughly of gained Heating Steel Ingots to 100, again calcine for 850 ℃;
(4) section bar carbide annealing process: then at 830 ℃, 60 ℃/h of heat-up rates, are incubated 8 hours; Cool to 750 ℃ with the furnace, anneal 8 hours, to remove the stress producing in forging process, finally cool to 500 ℃ with the furnace, the air cooling of coming out of the stove, surface finish.
Embodiment 6
The preparation technology of the die steel described in embodiment 1-4 any one, comprises the steps:
(1) smelting technology: adopt ordinary method melting, take the raw material of formula ratio, except Cr, Nb, Mo and B, other are all placed in, when melting to 1/3, Cr, the Nb, Mo and the B that put into formula ratio continue melting and form molten steel at 1700 ℃;
(2) molten steel is cast as steel ingot: ingot mold preheating, inject molten steel, and be incubated 6 hours, make composition of steel homogenizing, after the demoulding, Slow cooling carries out anneal, and speed of cooling≤25 ℃/h, to 550 ℃;
(3) forge or be rolled into section bar: gained Heating Steel Ingots to 1150 ℃ is also burnt down to the full forging of beginning thoroughly, again calcine for 850 ℃;
(4) section bar carbide annealing process: then at 830 ℃, 80 ℃/h of heat-up rates, are incubated 8 hours; Cool to 750 ℃ with the furnace, anneal 8 hours, to remove the stress producing in forging process, finally cool to 550 ℃ with the furnace, the air cooling of coming out of the stove, surface finish.

Claims (8)

1. a hot-work die steel material, is characterized in that, the weight percent of hot-work die steel material chemical composition consists of:
C:0.36-0.44 Ti:0.10-0.25 Mn:0.10-0.50 Nb: 0.15-0.20
Cr :5.0-5.5 Mo: 0.20-0.25 V : 1.0-1.5 B: 0.10-0.15
W:1.50-2.00 Si:0.50-0.70 S≤0.025 P≤0.020
Surplus is Fe.
2. hot-work die steel material according to claim 1, is characterized in that, the weight percent of hot-work die steel material chemical composition consists of:
C:0.38-0.40 Ti:0.15-0.20 Mn:0.40-0.50 Nb: 0.15-0.17
Cr :5.0-5.5 Mo: 0.22-0.25 V : 1.0-1.2 B: 0.12-0.15
W:1.50-2.00 Si:0.50-0.60 S≤0.020 P≤0.010
Surplus is Fe.
3. a hot-work die steel material, is characterized in that, the weight percent of hot-work die steel material chemical composition consists of:
C:0.36 Ti:0.10 Mn:0.10 Nb: 0.15
Cr:5.0 Mo: 0.20 V : 1.0 B: 0.10
W:1.50 Si:0.500 S≤0.025 P≤0.020
Surplus is Fe.
4. a hot-work die steel material, is characterized in that, the weight percent of hot-work die steel material chemical composition consists of:
C: 0.44 Ti: 0.25 Mn: 0.50 Nb: 0.20
Cr : 5.5 Mo: 0.25 V : 1.5 B: 0.15
W: 2.00 Si: 0.70 S≤0.025 P≤0.020
Surplus is Fe.
5. a hot-work die steel material, is characterized in that, the weight percent of hot-work die steel material chemical composition consists of:
C:0.38 Ti:0.15 Mn:0.40 Nb: 0.15
Cr :5.0 Mo: 0.22 V : 1.0 B: 0.12
W:1.50 Si:0.50 S≤0.020 P≤0.010
Surplus is Fe.
6. a hot-work die steel material, is characterized in that, the weight percent of hot-work die steel material chemical composition consists of:
C: 0.40 Ti: 0.20 Mn: 0.50 Nb: 0.17
Cr : 5.5 Mo: 0.25 V : 1.2 B: 0.15
W: 2.00 Si: 0.60 S≤0.020 P≤0.010
Surplus is Fe.
7. the manufacture craft of the hot-work die steel material described in claim 1-6 any one, is characterized in that, comprises the steps:
(1) smelting technology: adopt ordinary method melting, take the raw material of formula ratio, except Cr, Nb, Mo and B, other are all placed in, when melting to 1/3, Cr, the Nb, Mo and the B that put into formula ratio continue melting and form molten steel at 1560~1700 ℃;
(2) molten steel is cast as steel ingot: ingot mold preheating, inject molten steel, and be incubated 5~6 hours, make composition of steel homogenizing, after the demoulding, Slow cooling carries out anneal;
(3) forge or be rolled into section bar: by gained Heating Steel Ingots to 100 ℃~1150 ℃ and thoroughly burn down full beginning and forge, again calcine for 850 ℃;
(4) section bar carbide annealing process: then at 830 ℃, 60~80 ℃/h of heat-up rates, are incubated 8 hours; Cool to 750 ℃ with the furnace, anneal 8 hours, to remove the stress producing in forging process, finally cool to 500~550 ℃ with the furnace, the air cooling of coming out of the stove, surface finish.
8. the manufacture craft of hot-work die steel material according to claim 7, is characterized in that, speed of cooling≤25 ℃/h in step (2) are cooled to 500~550 ℃.
CN201410122841.XA 2014-03-31 2014-03-31 A kind of hot-work die steel material and preparation method thereof Active CN103911556B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410122841.XA CN103911556B (en) 2014-03-31 2014-03-31 A kind of hot-work die steel material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410122841.XA CN103911556B (en) 2014-03-31 2014-03-31 A kind of hot-work die steel material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN103911556A true CN103911556A (en) 2014-07-09
CN103911556B CN103911556B (en) 2016-01-27

Family

ID=51037554

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410122841.XA Active CN103911556B (en) 2014-03-31 2014-03-31 A kind of hot-work die steel material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN103911556B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104451083A (en) * 2014-12-30 2015-03-25 太原科技大学 Method for roll-casting plate slab of alloy die
CN105401037A (en) * 2015-11-13 2016-03-16 太仓旺美模具有限公司 Alloy glass die material
CN106191698A (en) * 2016-08-18 2016-12-07 上海闵轩钢结构工程有限公司 A kind of New Hot Work Die Steel of alloying and preparation method thereof
CN106521313A (en) * 2016-05-16 2017-03-22 昆山双儒模具科技有限公司 High-red-hardness high-wear-resistant hot work die steel, and production method thereof
CN107177789A (en) * 2017-07-20 2017-09-19 苏州市天星山精密模具有限公司 A kind of mould of high-intensity high-tenacity
CN109402335A (en) * 2019-01-07 2019-03-01 上海钰灏新材料科技有限公司 A kind of infiltration titanium layer mould steel and preparation method thereof
CN109797362A (en) * 2019-01-28 2019-05-24 上海钰灏新材料科技有限公司 The preparation method of oxidation processes and its heat make material after nitridation
CN110616373A (en) * 2019-09-29 2019-12-27 舞阳钢铁有限责任公司 Hot-work die steel plate and production method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1174896A (en) * 1996-04-29 1998-03-04 克罗索·洛利工业责任有限公司 Low alloy steel for manufacture of moulds for plastics
CN101240400A (en) * 2008-03-05 2008-08-13 钢铁研究总院 Low-cost hot working die steel
CN101403074A (en) * 2008-09-19 2009-04-08 周向儒 Novel chromium system hot die steel and thermal treatment process thereof
CN102242316A (en) * 2011-06-29 2011-11-16 江苏环立板带轧辊有限公司 H13 die steel and preparation method thereof
CN103602893A (en) * 2013-11-11 2014-02-26 郭小平 Hot work die steel having performance improved by adding niobium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1174896A (en) * 1996-04-29 1998-03-04 克罗索·洛利工业责任有限公司 Low alloy steel for manufacture of moulds for plastics
CN101240400A (en) * 2008-03-05 2008-08-13 钢铁研究总院 Low-cost hot working die steel
CN101403074A (en) * 2008-09-19 2009-04-08 周向儒 Novel chromium system hot die steel and thermal treatment process thereof
CN102242316A (en) * 2011-06-29 2011-11-16 江苏环立板带轧辊有限公司 H13 die steel and preparation method thereof
CN103602893A (en) * 2013-11-11 2014-02-26 郭小平 Hot work die steel having performance improved by adding niobium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104451083A (en) * 2014-12-30 2015-03-25 太原科技大学 Method for roll-casting plate slab of alloy die
CN105401037A (en) * 2015-11-13 2016-03-16 太仓旺美模具有限公司 Alloy glass die material
CN106521313A (en) * 2016-05-16 2017-03-22 昆山双儒模具科技有限公司 High-red-hardness high-wear-resistant hot work die steel, and production method thereof
CN106521347A (en) * 2016-05-16 2017-03-22 昆山双儒模具科技有限公司 Novel AGM7 high-speed steel material and production process thereof
CN106191698A (en) * 2016-08-18 2016-12-07 上海闵轩钢结构工程有限公司 A kind of New Hot Work Die Steel of alloying and preparation method thereof
CN107177789A (en) * 2017-07-20 2017-09-19 苏州市天星山精密模具有限公司 A kind of mould of high-intensity high-tenacity
CN109402335A (en) * 2019-01-07 2019-03-01 上海钰灏新材料科技有限公司 A kind of infiltration titanium layer mould steel and preparation method thereof
CN109797362A (en) * 2019-01-28 2019-05-24 上海钰灏新材料科技有限公司 The preparation method of oxidation processes and its heat make material after nitridation
CN110616373A (en) * 2019-09-29 2019-12-27 舞阳钢铁有限责任公司 Hot-work die steel plate and production method thereof

Also Published As

Publication number Publication date
CN103911556B (en) 2016-01-27

Similar Documents

Publication Publication Date Title
CN103911556B (en) A kind of hot-work die steel material and preparation method thereof
CN102912236B (en) High-performance and abrasion-resistant hot work die steel and technology for manufacturing same
CN103898415B (en) A kind of modified version Cr8 Steel Roll and preparation method thereof
CN101717896B (en) High strength and toughness cold working die steel and preparation method thereof
CN102691005B (en) Low alloy die steel
CN101280394A (en) High-silicon low-carbon high-heat resistance hot work die steel
CN110295332B (en) High-toughness high-mirror-surface pre-hardened die steel and manufacturing process thereof
CN109735777B (en) Anti-oxidation hot-work die steel and preparation method thereof
CN104178694A (en) Long-service life hot work die steel
CN101476082B (en) High performance low cost hot work die steel
CN101220442B (en) Hot work die steel with high-heat stability and high-strength
CN103014534A (en) Cast hot work die steel and processing method thereof
CN104745954A (en) Alloy steel and manufacturing method thereof
CN103834872A (en) Die steel with high-wearing resistance
CN102220544A (en) Steel material of hot-working die and its production process
CN109468544B (en) High-carbon high-chromium cold-work die steel and preparation method thereof
CN105177430A (en) Alloy tool steel and production method thereof
CN111057934A (en) High-performance hot-work die steel and production process thereof
CN103436769A (en) Fe-Cr-B-Al casting alloy capable of resisting high temperature wear
CN107974639B (en) High-toughness multi-element alloy wear-resistant steel ball and preparation method thereof
CN102877001A (en) Low-carbon tempering-free all-bainite structure plastic mould steel and preparation method thereof
CN102876996A (en) Austenitic hot-work die steel and preparation method thereof
CN103614659A (en) An austenite alloy steel material used for an internal combustion engine and a preparation method of the alloy steel material
CN105274443A (en) Mold forging steel and preparation method thereof
CN108070794B (en) High-wear-resistance hot-work die steel and preparation method thereof

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant