CN105063512A - Plastic die steel and manufacturing method thereof - Google Patents
Plastic die steel and manufacturing method thereof Download PDFInfo
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- CN105063512A CN105063512A CN201510527554.1A CN201510527554A CN105063512A CN 105063512 A CN105063512 A CN 105063512A CN 201510527554 A CN201510527554 A CN 201510527554A CN 105063512 A CN105063512 A CN 105063512A
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Abstract
The invention discloses plastic die steel and a manufacturing method thereof. The die steel comprises 0.30%-0.50% of C, 0.30%-0.60% of Si, 1.40%-1.80% of Mn, 0.030% or less of P, 0.015% or less of S, 1.00%-2.00% of Cr, 0.10%-0.20% of V, 0.25% or less of Cu, 0.55% or less of Cu+Ni, 0.02%-0.05% of Al, 0.01%-0.03% of Ti, 0.001%-0.0025% of B, and the balance unavoidable impurities and Fe. The manufacturing method of a converter, ladle refining (LF), Ruhstahl-Hausen vacuum degassing (RH), continuous casting and controlled rolling and controlled cooling is used for producing economical plastic die steel plates, the steel plates are subjected to hot rolling and controlled cooling sequentially, and by the adoption of the controlled rolling and controlled cooling technology, the die steel plates are of a stable martensite and bainite structure, have characteristics of low cost, non-quenching pre-hardening and high hardness, and can be used for manufacturing plastic dies.
Description
Technical field
The present invention relates to a kind of plastic die steel and manufacture method thereof, particularly, relate to a kind of low cost, pre-hardening Micro Alloying and glass hard steel and manufacture method thereof.
Background technology
According to national industrial policies and social development demand, saving type of exploiting natural resources, the development trend having the substitute products of the market competitiveness to be plastic die steel.On current die steel market, pre-hardened plastic mold steel kind all contains noble metal Mo (0.30 ~ 0.50%), and these are the major causes causing its production cost higher.Therefore be badly in need of developing a kind of resource-conserving plastic die steel meeting high rigidity and require, reduce plastic die steel production cost.
Summary of the invention
The present invention aims to provide a kind of plastic die steel and manufacture method thereof, and gained mould steel plate has stable martensite+bainite structure, has the feature of low cost, pre-hardening Micro Alloying and glass hard steel, can be used in manufacturing mould of plastics.
Technical scheme of the present invention is not being added expensive alloying elements Mo content and realizing prevulcanized mold steel plate varieties by online controlled rolling and controlled cooling, and steel plate is by online controlled rolling and controlled cooling, and after making pre-hardening, hardness reaches 280 ~ 350HB.
The invention provides a kind of plastic die steel, comprise the raw material of following weight percent: C:0.30-0.50%; Si:0.30-0.60%; Mn:1.40-1.80%; P≤0.030%; S≤0.015%; Cr:1.00-2.00%; V:0.10-0.20; Cu≤0.25; Cu+Ni≤0.55; Al:0.02-0.05%; Ti:0.01-0.03%; B:0.001-0.0025%, all the other are inevitable impurity and Fe.
The present invention utilizes the Trace Aluminum of low cost, titanium, boron and replace noble metal molybdenum, does not add expensive alloying elements Mo, is successfully realized the Pre-hardening treatment of steel plate by online controlled rolling and controlled cooling.
By controlling the effective constituent of Al, Ti, B in steel to ensure the hardening capacity of steel, and adopt rational cooling controlling and rolling controlling process to guarantee the high rigidity of steel.The B element solid solution of trace enters among austenite, can suppress polygonal ferrite forming core on austenite grain boundary significantly, thus improves the hardening capacity of steel.But, B and N, O have very strong avidity, if B exists with the form of oxide compound and nitride, just the effect suppressing ferrite grain boundaries forming core is lost, therefore generally before adding B, first add appropriate A1 deoxidation, add the solid N of appropriate Ti again, to avoid the formation of nitrogen, the oxygen compound of B, guarantee that B is solid-solution in austenite.
Hardness is the key technical indexes of die steel, and surface abrasion is one of main failure forms of mould, and mould for keeping its geomery constant, must have sufficiently high hardness, to ensure wear resistance and the life-span thereof of mould under heavily stressed effect.When material is after hot-work, pre-hardening, tempering, hardness reaches 280 ~ 350HB; Reach the high rigidity requirement of die industry to material.
The invention provides the manufacture method of above-mentioned plastic die steel, after 1000-1200 DEG C of roughing, 900-950 DEG C finish rolling, by controlled cooling model and tempered process, obtain the mixed structure of bainite and martensite, obtain described plastic die steel, hardness reaches 280 ~ 350HB.
The manufacture method of above-mentioned plastic die steel, comprises the following steps:
(1) smelt
Adopt molten iron through EBT-EAV(electric furnace))+LF(refining)+VD(vacuum outgas)+continuous casting, the main component (weight percentage) of steel ingot is:
C:0.30-0.50%; Si:0.30-0.60%; Mn:1.40-1.80%; P≤0.030%; S≤0.015%; Cr:1.00-2.00%; V:0.10-0.20; Cu≤0.25; Cu+Ni≤0.55; Al:0.02-0.05%; Ti:0.01-0.03%; B:0.001-0.0025%, all the other are inevitable impurity and Fe.
(2) heat: continuously cast bloom preheating temperature≤900 DEG C, soaking temperature: 1230 ± 20 DEG C; Rate of heating: 8 ~ 10mm/10min; Be incubated more than 5 hours;
(3) rolling: adopt heavy reduction (maximum reduction is 20mm) rolling, roughing temperature is 1100-1200 DEG C, and final rolling temperature is 900-950 DEG C, and finishing temperature is 830 ~ 880 DEG C;
(4) control cold: different thickness specification steel plate is by controlled cooling model, and slab thickness d specification is 20≤d<50mm, and the type of cooling adopts air cooling, and 450 ~ 490 DEG C time, stacking carries out bell-type slow cooling; Thickness d specification is 50≤d≤80mm, and the type of cooling adopts atomized water spray cold by force, and 350 ~ 400 DEG C time, stacking carries out bell-type slow cooling; Slow cooling 46 ~ 52 hours, obtains the pre-hard state plate of moderate thickness that hardness is 380 ~ 400HB;
(5) tempering: with normalizing furnace or bell furnace tempering, require heat-up rate 35 DEG C/h, at 530-580 DEG C of insulation 8-10 hour; Obtain the pre-hard state plate of moderate thickness that hardness is 280 ~ 350HB.
In above-mentioned manufacture method, in the described operation of rolling, blooming mill deflection be 70 ~ 80%, four roller finishing rolling mills become total shape amount be 30 ~ 20%.
In above-mentioned manufacture method, in the cold process of described control, thickness is 20≤d<50mm steel plate speed of cooling is 10-15 DEG C/min; Thickness is 50≤d≤80mm steel plate speed of cooling is 15-20 DEG C/min.
For different size, air cooling directly cools in atmosphere (without the cooling of spray cooling field), and directly to stacking slow cooling during 450 ~ 490 DEG C of temperature, atomized water spray is cold is by force exactly will cool in spray cooling field, stacking slow cooling when reaching stacking temperature 350 DEG C ~ 400 DEG C.
Economical Steel for Plastic Die provided by the invention has the feature of low cost, high rigidity, when not adding Mo, utilizes the strengthening mechanism of B to improve hardening capacity; Rational carbon content control, ensures the surface abrasion resistance of material; Sulphur, phosphorus content are controlled at lower limit, reduces the segregation phenomena of product; Add corresponding initial curing process and tempering process, thus work out the plate of moderate thickness material of low cost, high rigidity, steel plate from outward appearance to inner essence keeps the mixed structure of bainite and martensite, its length, thickness direction hardness are even, hardness reaches 280 ~ 350HB, meets the requirement of mould of plastics industry high rigidity.
Of the present invention
beneficial effect:
(1) propose first in economical Steel for Plastic Die Composition Design of the present invention not add Mo element producing in the thick steel plate of 20-80mm, and only rely on Trace Aluminum, titanium, boron and online controlled rolling and controlled cooling successfully to realize the Pre-hardening treatment of steel plate, just required hardness can be reached by means of only tempering heat treatment after rolling, make this steel have higher hardening capacity simultaneously, solve the problem that current steel plate for plastic mould cost is high.In other Patents, do not retrieve this design, the present invention has autonomous innovation.
(2) the present invention proposes the preparation method's production economy plastic mould steel plate adopting converter (K-OBM-S)+LF+RH+ continuous casting+controlled rolling and controlled cooling, steel plate hot cooling control after rolling, by Controlled Rolling And Controlled Cooling measure, make different thickness steel plate obtain the bainite and martensite tissue of same composition, thus make the durometer level that the hardness of different thickness steel plate reaches identical.
Accompanying drawing explanation
Fig. 1 is the metallographic structure figure of embodiment 1 plastic die steel textura epidermoidea.
Fig. 2 is the metallographic structure figure of embodiment 1 plastic die steel core structure.
Embodiment
Further illustrate the present invention below by embodiment, but be not limited to following examples.
Embodiment 1:
The plate of moderate thickness thickness of the mould of plastics industry of this enforcement is 71 millimeters, wide 1800 millimeters, and its chemical composition (weight percentage) is:
C0.40%Si0.47%Mn1.61%P0.011%S0.009%
Cr1.69%Al0.026%Ti0.016%B0.0018%V0.13%
Cu0.01%Cu+Ni0.03%
All the other are the component of inevitable impurity and Fe.
After universal mill breaking down and four-high mill, online pre-hardening, controlling 71 mm thick steel plate cooling velocity after rolling is 15-20 DEG C/min.Make surface of steel plate and centre hardness difference≤20HB.Obtain uniform bainite+martensitic stucture.
Concrete preparation method is as follows:
A smelts steel ingot
Adopt 80 tons of converter → 80 ton LF(ladle refinings) → RH(vacuum outgas) to smelt, middle bag teeming temperature is that 1510 ~ 1525 DEG C of continuous castings become 220 × 1260 × 2150(unit of length: mm) specification continuously cast bloom.RH stove smelting component (weight percentage) is:
C0.40%Si0.47%Mn1.61%P0.011%S0.009%
Cr1.69%Al0.026%Ti0.016%B0.0018%V0.13%
Cu0.01%Cu+Ni0.03%
All the other are the component of inevitable impurity and Fe.
B heats
Continuously cast bloom preheating temperature 700 DEG C, preheating 1 hour, soaking temperature: 1230 DEG C; Rate of heating: 9mm/10min; Be incubated 6 hours.
C rolling
Adopt heavy reduction rolling, blooming mill total deformation be 100mm, single pass heavy deformation 20mm be not less than 2 roads first, the total deformation of four roller finishing rolling mills is 50mm, and single pass heavy deformation is not less than 10mm.Roughing temperature is 1140 DEG C, and final rolling temperature is 920 DEG C, and finishing temperature is 860 DEG C.
D control is cold
Thickness is 71mm, and the type of cooling adopts atomized water spray cold by force, and 350 DEG C time, stacking carries out bell-type slow cooling.
E tempering
With normalizing furnace or bell furnace tempering, heat-up rate 35 DEG C/h, 560 DEG C of insulations 10 hours.
Embodiment 2:
The plate of moderate thickness thickness of the mould of plastics industry of this enforcement is 31 millimeters, wide 1800 millimeters, and its chemical composition (weight percentage) is:
C0.39%Si0.49%Mn1.67%P0.010%S0.004%
Cr1.73%Al0.040%Ti0.020%B0.0015%V0.14%
Cu0.02%Cu+Ni0.02%
All the other are the component of inevitable impurity and Fe.
After universal mill breaking down and four-high mill finish rolling, online pre-hardening, controlling 31 mm thick steel plate cooling velocity after rolling is 10-15 DEG C/min.Make surface of steel plate and centre hardness difference≤20HB.Obtain uniform bainite+martensitic stucture.
Concrete preparation method is as follows:
A smelts steel ingot
Adopt 80 tons of converter → 80 ton LF(ladle refinings) → RH(vacuum outgas) smelt, middle bag teeming temperature is 1510 ~ 1525 DEG C, and continuous casting becomes 220 × 1260 × 2150(unit of length: mm) specification continuously cast bloom.RH stove smelting component (weight percentage) is:
C0.40%Si0.47%Mn1.61%P0.011%S0.009%
Cr1.69%Al0.026%Ti0.016%B0.0018%V0.13%
Cu0.01%Cu+Ni0.03%
All the other are the component of inevitable impurity and Fe.
B heats
Continuously cast bloom preheating temperature 700 DEG C, preheating 1 hour, soaking temperature: 1230 DEG C; Rate of heating: 9mm/10min; Be incubated 6 hours.
C rolling
Adopt heavy reduction rolling, blooming mill total deformation be 130mm, single pass heavy deformation 20mm be not less than 3 roads first, the total deformation of four roller finishing rolling mills is 60mm, and single pass heavy deformation is not less than 10mm., roughing temperature is 1150 DEG C, and final rolling temperature is 930 DEG C, and finishing temperature is 860 DEG C.
D control is cold
Thickness is 31mm, and the type of cooling adopts air cooling mode, when air cooling carries out bell-type slow cooling to stacking during temperature 460 DEG C.
E tempering
With normalizing furnace or bell furnace tempering, heat-up rate 35 DEG C/h, 560 DEG C of insulations 10 hours.
Claims (6)
1. a plastic die steel, is characterized in that: the raw material comprising following weight percent: C:0.30-0.50%; Si:0.30-0.60%; Mn:1.40-1.80%; P≤0.030%; S≤0.015%; Cr:1.00-2.00%; V:0.10-0.20; Cu≤0.25; Cu+Ni≤0.55; Al:0.02-0.05%; Ti:0.01-0.03%; B:0.001-0.0025%, all the other are inevitable impurity and Fe.
2. the manufacture method of a plastic die steel according to claim 1, it is characterized in that: after 1100-1200 DEG C of roughing, 900-950 DEG C finish rolling, by controlled cooling model and tempered process, obtain the mixed structure of bainite and martensite, obtain described plastic die steel, hardness reaches 280 ~ 350HB.
3. the manufacture method of plastic die steel according to claim 2, is characterized in that: comprise the following steps:
(1) smelt
Adopt molten iron through EBT-EAV+LF+VD+ continuous casting, the predominant quantity percentage ratio of steel ingot is:
C:0.30-0.50%; Si:0.30-0.60%; Mn:1.40-1.80%; P≤0.030%; S≤0.015%; Cr:1.00-2.00%; V:0.10-0.20; Cu≤0.25; Cu+Ni≤0.55; Al:0.02-0.05%; Ti:0.01-0.03%; B:0.001-0.0025%, all the other are inevitable impurity and Fe;
(2) heat: continuously cast bloom preheating temperature≤900 DEG C, soaking temperature: 1230 ± 20 DEG C; Rate of heating: 8 ~ 10mm/10min; Be incubated more than 5 hours;
(3) rolling: adopt heavy reduction rolling, roughing temperature is 1100-1200 DEG C, and final rolling temperature is 900-950 DEG C, and finishing temperature is 830 ~ 880 DEG C;
(4) control cold: different thickness specification steel plate is by controlled cooling model, and slab thickness d specification is 20≤d<50mm, and the type of cooling adopts air cooling; Thickness d specification is 50≤d≤80mm, and the type of cooling adopts atomized water spray cold by force, and 350 DEG C ~ 450 DEG C time, stacking carries out bell-type slow cooling; Slow cooling 46 ~ 52 hours, obtains the pre-hard state plate of moderate thickness that hardness is 380 ~ 400HB;
(5) tempering: with normalizing furnace or bell furnace tempering, require heat-up rate 35 DEG C/h, at 530-580 DEG C of insulation 8-10 hour; Obtain the pre-hard state plate of moderate thickness that hardness is 280 ~ 350HB.
4. the manufacture method of plastic die steel according to claim 3, is characterized in that: in the described operation of rolling, and blooming mill deflection is 70 ~ 80%, four roller finishing rolling mill total deformations is 30 ~ 20%.
5. the manufacture method of plastic die steel according to claim 3, is characterized in that: in the cold process of described control, and steel plate thickness is 20≤d<50mm, and steel plate speed of cooling is 10-15 DEG C/min; Steel plate thickness is 50≤d≤80mm, and steel plate speed of cooling is 15-20 DEG C/min.
6. the manufacture method of plastic die steel according to claim 3, is characterized in that: in the cold process of described control, and the slow cooling temperature of air cooling is 450 ~ 490 DEG C, and the cold by force slow cooling temperature of atomized water spray is 350 ~ 400 DEG C.
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| CN105925889A (en) * | 2016-06-30 | 2016-09-07 | 江阴兴澄特种钢铁有限公司 | Ultrathick specification 1.2311 mold steel plate and preparation method thereof |
| CN107058897A (en) * | 2017-03-22 | 2017-08-18 | 唐山钢铁集团有限责任公司 | A kind of high manganese pre-hardening plastic steel plate for die and its production method |
| CN107557694A (en) * | 2017-07-19 | 2018-01-09 | 唐山钢铁集团有限责任公司 | A kind of pre-hardening plastic steel plate for die and its TMCP production methods |
| CN107587075A (en) * | 2017-08-30 | 2018-01-16 | 武汉钢铁有限公司 | Inexpensive plastic die steel and its production method |
| CN107774712A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | Production method of low-cost large-thickness low-alloy steel plate |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170047A (en) * | 1996-04-29 | 1998-01-14 | 克罗索·洛利工业责任有限公司 | Steel repairable by welding for manufacture of moulds for plastics |
| 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 |
| WO2003083154A1 (en) * | 2002-04-03 | 2003-10-09 | Industeel (France) | Bulk steel for the production of injection moulds for plastic material or for the production of tools for working metals |
| JP2004035992A (en) * | 2002-07-08 | 2004-02-05 | Nippon Koshuha Steel Co Ltd | High toughness steel for plastic molding metallic mold |
| CN102268599A (en) * | 2011-08-01 | 2011-12-07 | 南京钢铁股份有限公司 | Production technology of non-modulated plastic die steel thick plate |
| EP2662462A1 (en) * | 2012-05-07 | 2013-11-13 | Valls Besitz GmbH | Low temperature hardenable steels with excellent machinability |
| CN103757544A (en) * | 2013-12-05 | 2014-04-30 | 南京钢铁股份有限公司 | Economical non-quenched and non-tempered micro-alloyed plastic die steel plate and making method thereof |
| CN103898414A (en) * | 2014-04-01 | 2014-07-02 | 江苏联峰能源装备有限公司 | Steel for plastic mold and mold for plastic molding |
-
2015
- 2015-08-26 CN CN201510527554.1A patent/CN105063512A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170047A (en) * | 1996-04-29 | 1998-01-14 | 克罗索·洛利工业责任有限公司 | Steel repairable by welding for manufacture of moulds for plastics |
| 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 |
| WO2003083154A1 (en) * | 2002-04-03 | 2003-10-09 | Industeel (France) | Bulk steel for the production of injection moulds for plastic material or for the production of tools for working metals |
| JP2004035992A (en) * | 2002-07-08 | 2004-02-05 | Nippon Koshuha Steel Co Ltd | High toughness steel for plastic molding metallic mold |
| CN102268599A (en) * | 2011-08-01 | 2011-12-07 | 南京钢铁股份有限公司 | Production technology of non-modulated plastic die steel thick plate |
| EP2662462A1 (en) * | 2012-05-07 | 2013-11-13 | Valls Besitz GmbH | Low temperature hardenable steels with excellent machinability |
| CN103757544A (en) * | 2013-12-05 | 2014-04-30 | 南京钢铁股份有限公司 | Economical non-quenched and non-tempered micro-alloyed plastic die steel plate and making method thereof |
| CN103898414A (en) * | 2014-04-01 | 2014-07-02 | 江苏联峰能源装备有限公司 | Steel for plastic mold and mold for plastic molding |
Cited By (21)
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| CN105925889A (en) * | 2016-06-30 | 2016-09-07 | 江阴兴澄特种钢铁有限公司 | Ultrathick specification 1.2311 mold steel plate and preparation method thereof |
| CN107774712A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | Production method of low-cost large-thickness low-alloy steel plate |
| CN107058897A (en) * | 2017-03-22 | 2017-08-18 | 唐山钢铁集团有限责任公司 | A kind of high manganese pre-hardening plastic steel plate for die and its production method |
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| CN109252085A (en) * | 2017-07-13 | 2019-01-22 | 鞍钢股份有限公司 | Production method of steel plate for pre-hardened plastic mold |
| CN107557694B (en) * | 2017-07-19 | 2018-12-18 | 唐山钢铁集团有限责任公司 | A kind of pre-hardening plastic steel plate for die and its TMCP production method |
| CN107557694A (en) * | 2017-07-19 | 2018-01-09 | 唐山钢铁集团有限责任公司 | A kind of pre-hardening plastic steel plate for die and its TMCP production methods |
| CN107587075A (en) * | 2017-08-30 | 2018-01-16 | 武汉钢铁有限公司 | Inexpensive plastic die steel and its production method |
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| CN111112342B (en) * | 2020-01-03 | 2021-08-31 | 广东韶钢松山股份有限公司 | Die steel rolling process and die steel |
| CN112226667A (en) * | 2020-09-30 | 2021-01-15 | 攀钢集团江油长城特殊钢有限公司 | Preparation method of chromium stainless pre-hard plastic die steel |
| CN112226667B (en) * | 2020-09-30 | 2022-02-01 | 攀钢集团江油长城特殊钢有限公司 | Preparation method of chromium stainless pre-hard plastic die steel |
| CN113718094A (en) * | 2021-08-18 | 2021-11-30 | 山西太钢不锈钢股份有限公司 | Manufacturing method of hot-work die steel medium plate |
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