CN110257689A - A kind of high polishing pre-hardening plastic mould steel and its preparation process - Google Patents
A kind of high polishing pre-hardening plastic mould steel and its preparation process Download PDFInfo
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- CN110257689A CN110257689A CN201910355602.1A CN201910355602A CN110257689A CN 110257689 A CN110257689 A CN 110257689A CN 201910355602 A CN201910355602 A CN 201910355602A CN 110257689 A CN110257689 A CN 110257689A
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/001—Heat treatment of ferrous alloys containing Ni
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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- 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
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- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- 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
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- 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
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- 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
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- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The present invention relates to a kind of high polishing pre-hardening plastic mould steel and its manufacturing process, the mass percent of each main alloy element in the alloy composition of the mould steel are as follows: C≤0.10%, Si≤0.50%, Mn 0.60~1.00%, P < 0.015%, S < 0.005%, Ni2.50~4.00%, Al 0.50~1.00%, Cu 2.00~3.00, Fe surplus；High polishing pre-hardening plastic mould steel of the invention passes through ingredient, smelting, pouring, then electroslag remelting；High temperature diffusion is heat-treated, then multiway forging hot-working and heat treatment after forging；Pre-hardening treatment is carried out again；Finally carry out aging strengthening model.The present invention has the advantages that high polishing pre-hardening plastic mould steel polishing performance with higher of the invention and higher harden ability.
Description
Technical field
The invention belongs to technical field of alloy steel, are related to a kind of alloying mould steel, in particular to a kind of Ni-Cu-Al is heavy
Shallow lake constrictive type height polishes pre-hardening plastic mould steel and its preparation process.
Background technique
It is increasing to the dosage of mold with the rapid development of China's manufacturing industry, to the performance requirement of mold materials
It is higher and higher, especially high polishing and high-wearing feature etc..It is raw in the light emitting component of auto manufacturing, household electrical appliances, electronic communication etc.
Mold is used in production.These molds require to have it is high polish and high-wearing feature, it is used at present be mostly the NAK80 steel of import or
The materials such as NAK55 steel manufacture these molds.But NAK80 steel or 1.2343 price of steel product are higher, this will greatly increase these
The manufacturing cost of automobile product.Under global economy bottom fan's environment since especially 2012, economizing on resources and reduce cost is
The big bottleneck of the one of auto manufacturing.
Through retrieving, 109504896 A of patent CN discloses a kind of cupric height polishing pre-hardening plastic mould steel and its manufacture
Technique, the mass percent of each main alloy element in the alloy composition of the mould steel are as follows: the .10% of C≤0, Si≤0
.30%, 0 .015%, 0 .005% of S < of Mn 0 .20~0 .40%, Cr≤0 .30%, Mo≤0 .20%, V≤0 .10%, P <,
0 .40~0 .70%, Cu0 .40~0 .70%, Fe surplus of Ni 1 .60~2 .00%, Al；The invention hot die steel is logical
Ingredient, smelting, pouring are crossed, then electroslag remelting；High temperature diffusion heat treatment, after then multiway forging hot-working, and forging at heat
Reason；It carries out expanding hydrogen annealing and Pre-hardening treatment again；Finally carry out aging strengthening model；The polishing with higher of the mould steel of the invention
Performance and lower cost of alloy, but there are still certain defects for the patent of invention: and the content of Ni and Cu element is relatively low, into
And make the harden ability of the invention steel grade relatively poor, bigger specification mold cannot be produced.
Therefore, a kind of harden ability that can greatly improve steel grade is researched and developed, the height polishing that can manufacture bigger specification mold is pre- hard
Changing plastic mould steel and its preparation process is necessary.
Summary of the invention
The technical problem to be solved in the present invention is to provide the harden ability that one kind can greatly improve steel grade, can manufacture bigger rule
The high polishing pre-hardening plastic mould steel of grid mold.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of high polishing pre-hardening plastic mould steel, wound
New point is: the mass percent of each main alloy element in the chemical component of the mould steel are as follows: C≤0.10%, Si≤
0.50%, Mn 0.60~1.00%, P < 0.015%, S < 0.005%, Ni2.50~4.00%, Al 0.50~1.00%, Cu
2.00~3.00, Fe surplus.
Further, in the chemical component of the mould steel each main alloy element best in quality percentage are as follows: C
More than 0.05%, Si 0.25%, Mn 0.80%, P < 0.010%, S < 0.003%, Ni 3.00%, Al 0.80%, Cu 3.00%, Fe
Amount.
The invention solves another technical problem be to provide a kind of polishing pre-hardening of Ni-Cu-Al precipitation hardenable height
The preparation process of plastic mould steel.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of above-mentioned high polishing pre-hardening plastic mould steel
Preparation process, innovative point is: the preparation process includes the following steps:
(1) it smelts: by the chemical component and weight percent of Ni-Cu-Al precipitation hardenable height polishing pre-hardening plastic mould steel
Ingredient, electric arc furnace smelting and refining are carried out, electroslag remelting is then carried out or vacuum consumable is smelted, be heat-fed forge furnace；
(2) High temperature diffusion is heat-treated: being heated up heating furnace using stepped heating mode, respectively at 600 DEG C, 800 DEG C and 1100 DEG C etc.
Temperature；It is finally warming up to 1130~1170 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1150 DEG C will be cooled to by the steel ingot of High temperature diffusion heat treatment, and in this temperature range
Interior progress multiway forging processing pulls out forging method using two upsettings two, forges compression ratio >=3, total forging ratio >=5, final forging temperature >=850
℃；
(4) heat treatment after forging: it is air-cooled after forging, then fill anneal processing, 730~860 DEG C of heating temperature heat preservations 15~20
Hour, it is furnace-cooled to 630-650 DEG C and keeps the temperature 10~15 hours, be furnace-cooled to 200 DEG C or less and come out of the stove；
(5) Pre-hardening treatment: 950~1050 DEG C are heated to and keeps the temperature 15~30 hours, water cooling of coming out of the stove or mist are cold or air-cooled to surface
200 DEG C of temperature hereinafter, into tempering furnace；
(6) aging strengthening model: being heated to 500~600 DEG C, keeps the temperature 20-40 hours, is furnace-cooled to 250 DEG C hereinafter, coming out of the stove air-cooled.
The present invention has the advantages that
Cupric height polishing pre-hardening plastic mould steel of the present invention makes full use of the alloying action of Ni-Cu-Al system alloying element special
Point, the content for reducing carbon on the basis of NAK80, improving Ni and Cu, steel grade of the present invention are improved due to lower carbon content
The uniformity of hardness of steel, Ni the and Cu element of high level, and harden ability with higher and hardenability, have prevulcanized steel
There is higher uniformity of hardness, to obtain higher polishing performance, the mold of bigger specification can be manufactured.
In conjunction with the above feature, compared with NAK80 steel or 1.2343 steel, steel grade of the present invention polishing performance with higher and compared with
High harden ability, this brings huge tribute for China's manufacturing industry especially auto manufacturing and household electrical appliances and electronic communication manufacturing industry
It offers, and improves China's mould steel manufacture level and the market competitiveness.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the high polishing pre-hardening plastic mould steel solid gas coupling curve of embodiment 3.
Fig. 2 is the metallographic structure of the high polishing pre-hardening plastic mould steel of embodiment 3.
Fig. 3 a is that the dermatoglyph of the high polishing pre-hardening plastic mould steel of embodiment 3 etches case.
Fig. 3 b is that the dermatoglyph of the high polishing pre-hardening plastic mould steel of embodiment 3 etches case.
Specific embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among the embodiment described range.
Embodiment 1
It is as follows using the composition of alloy ingredient and its weight percent of high polishing pre-hardening plastic mould steel in this example:
C 0.05%, Si 0.20%, Mn 0.60%, P 0.014%, S 0.004%, Ni 2.50%, Al 0.50%, Cu 2.00%,
Fe surplus.
In the present embodiment, specific step is as follows by the preparation process of cupric height polishing pre-hardening plastic mould steel:
(1) it smelts: carrying out ingredient, electric arc furnaces by the chemical component and weight percent of cupric height polishing pre-hardening plastic mould steel
It smelts and refines, then carry out electroslag remelting or vacuum consumable is smelted, be heat-fed forge furnace；
(2) High temperature diffusion is heat-treated: being heated up heating furnace using stepped heating mode, respectively at 600 DEG C, 800 DEG C and 1100 DEG C etc.
Temperature；It is finally warming up to 1130~1170 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1150 DEG C will be cooled to by the steel ingot of High temperature diffusion heat treatment, and in this temperature range
Interior progress multiway forging processing pulls out forging method using two upsettings two, forges compression ratio >=3, total forging ratio >=5, final forging temperature >=850
℃；
(4) heat treatment after forging: it is air-cooled after forging, then fill anneal processing, 730~860 DEG C of heating temperature heat preservations 15~20
Hour, it is furnace-cooled to 630-650 DEG C and keeps the temperature 10~15 hours, be furnace-cooled to 200 DEG C or less and come out of the stove；
(5) Pre-hardening treatment: 950~1050 DEG C are heated to and keeps the temperature 15~30 hours, water cooling of coming out of the stove or mist are cold or air-cooled to surface
200 DEG C of temperature hereinafter, into tempering furnace；
(7) aging strengthening model: being heated to 500~600 DEG C, keeps the temperature 20-40 hours, is furnace-cooled to 250 DEG C hereinafter, coming out of the stove air-cooled.
Embodiment 2
It is as follows using the composition of alloy ingredient and its weight percent of cupric height polishing pre-hardening plastic mould steel in this example:
C 0.10%, Si 0.50%, Mn 1.00%, P 0.009%, S 0.002%, Ni 4.00%, Al 1.00%, Cu 3.00%, Fe
Surplus.
In the present embodiment, specific step is as follows by the preparation process of height polishing pre-hardening plastic mould steel:
(1) it smelts: carrying out ingredient, electric arc furnace smelting by the chemical component and weight percent of high polishing pre-hardening plastic mould steel
And refining, it then carries out electroslag remelting or vacuum consumable is smelted, be heat-fed forge furnace；
(2) High temperature diffusion is heat-treated: being heated up heating furnace using stepped heating mode, respectively at 600 DEG C, 800 DEG C and 1100 DEG C etc.
Temperature；It is finally warming up to 1130~1170 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1150 DEG C will be cooled to by the steel ingot of High temperature diffusion heat treatment, and in this temperature range
Interior progress multiway forging processing pulls out forging method using two upsettings two, forges compression ratio >=3, total forging ratio >=5, final forging temperature >=850
℃；
(4) heat treatment after forging: it is air-cooled after forging, then fill anneal processing, 730~860 DEG C of heating temperature heat preservations 15~20
Hour, it is furnace-cooled to 630-650 DEG C and keeps the temperature 10~15 hours, be furnace-cooled to 200 DEG C or less and come out of the stove；
(5) Pre-hardening treatment: 950~1050 DEG C are heated to and keeps the temperature 15~30 hours, water cooling of coming out of the stove or mist are cold or air-cooled to surface
200 DEG C of temperature hereinafter, into tempering furnace；
(7) aging strengthening model: being heated to 500~600 DEG C, keeps the temperature 20-40 hours, is furnace-cooled to 250 DEG C hereinafter, coming out of the stove air-cooled.
Embodiment 3
It is as follows using the composition of alloy ingredient and its weight percent of high polishing pre-hardening plastic mould steel in this example:
C 0.07%, Si 0.20%, Mn 0.80%, P 0.010%, S 0.003%, Ni 3.50%, Al 0.60%, Cu 2.50%,
Fe surplus.In the present embodiment, specific step is as follows by the preparation process of height polishing pre-hardening plastic mould steel:
(1) it smelts: carrying out ingredient, electric arc furnace smelting by the chemical component and weight percent of high polishing pre-hardening plastic mould steel
And refining, it then carries out electroslag remelting or vacuum consumable is smelted, be heat-fed forge furnace；
(2) High temperature diffusion is heat-treated: being heated up heating furnace using stepped heating mode, respectively at 600 DEG C, 800 DEG C and 1100 DEG C etc.
Temperature；It is finally warming up to 1130~1170 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1150 DEG C will be cooled to by the steel ingot of High temperature diffusion heat treatment, and in this temperature range
Interior progress multiway forging processing pulls out forging method using two upsettings two, forges compression ratio >=3, total forging ratio >=5, final forging temperature >=850
℃；
(4) heat treatment after forging: it is air-cooled after forging, then fill anneal processing, 730~860 DEG C of heating temperature heat preservations 15~20
Hour, it is furnace-cooled to 630-650 DEG C and keeps the temperature 10~15 hours, be furnace-cooled to 200 DEG C or less and come out of the stove；
(5) Pre-hardening treatment: 950~1050 DEG C are heated to and keeps the temperature 15~30 hours, water cooling of coming out of the stove or mist are cold or air-cooled to surface
200 DEG C of temperature hereinafter, into tempering furnace；
(7) aging strengthening model: being heated to 500~600 DEG C, keeps the temperature 20-40 hours, is furnace-cooled to 250 DEG C hereinafter, coming out of the stove air-cooled.
The present embodiment height polishes pre-hardening plastic mould steel after above-mentioned smelting and forging hot-working and heat treatment, finally
Trimmed size is (long * wide * is thick) 2500mm*1500mm*600mm module, and sampling is tested for the property:
A, aging characteristic: tempering hardness is as shown in Figure 1 with the aging characteristic curve that tempering temperature changes；
B, microscopic structure: the microscopic structure of the present embodiment mould steel is as shown in Figure 2.
C, dermatoglyph etching performance: the dermatoglyph etching case of the present embodiment is as shown in figure 3, as seen from the figure, which has
Preferable dermatoglyph etching performance.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (3)
1. a kind of high polishing pre-hardening plastic mould steel, it is characterised in that: each major alloy in the chemical component of the mould steel
The mass percent of element are as follows: C≤0.10%, Si≤0.50%, Mn 0.60~1.00%, P < 0.015%, S < 0.005%,
Ni2.50~4.00%, Al 0.50~1.00%, Cu 2.00~3.00%, Fe surplus.
2. high polishing pre-hardening plastic mould steel according to claim 1, it is characterised in that: the chemistry of the mould steel at
The best in quality percentage of each main alloy element in point are as follows: C 0.05%, Si 0.25%, Mn 0.80%, P < 0.010%, S <
0.003%, Ni 3.00%, Al 0.80%, Cu 3.00%, Fe surplus.
3. a kind of preparation process of the polishing pre-hardening plastic mould steel of height described in the claims 1, it is characterised in that: the system
Standby technique includes the following steps:
(1) it smelts: carrying out ingredient, electric arc furnace smelting by the chemical component and weight percent of high polishing pre-hardening plastic mould steel
And refining, it then carries out electroslag remelting or vacuum consumable is smelted, be heat-fed forge furnace；
(2) High temperature diffusion is heat-treated: being heated up heating furnace using stepped heating mode, respectively at 600 DEG C, 800 DEG C and 1100 DEG C etc.
Temperature；It is finally warming up to 1130~1170 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1150 DEG C will be cooled to by the steel ingot of High temperature diffusion heat treatment, and in this temperature range
Interior progress multiway forging processing pulls out forging method using two upsettings two, forges compression ratio >=3, total forging ratio >=5, final forging temperature >=850
℃；
(4) heat treatment after forging: it is air-cooled after forging, then fill anneal processing, 730~860 DEG C of heating temperature heat preservations 15~20
Hour, it is furnace-cooled to 630-650 DEG C and keeps the temperature 10~15 hours, be furnace-cooled to 200 DEG C or less and come out of the stove；
(5) Pre-hardening treatment: 950~1050 DEG C are heated to and keeps the temperature 15~30 hours, water cooling of coming out of the stove or mist are cold or air-cooled to surface
200 DEG C of temperature hereinafter, into tempering furnace；
(6) aging strengthening model: being heated to 500~600 DEG C, keeps the temperature 20-40 hours, is furnace-cooled to 250 DEG C hereinafter, coming out of the stove air-cooled.
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| CN201910355602.1A CN110257689A (en) | 2019-04-29 | 2019-04-29 | A kind of high polishing pre-hardening plastic mould steel and its preparation process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270058A (en) * | 2020-01-22 | 2020-06-12 | 大冶特殊钢有限公司 | Heat treatment method for martensite precipitation hardening type stainless steel module after forging |
| CN113355599A (en) * | 2021-05-24 | 2021-09-07 | 如皋市宏茂重型锻压有限公司 | High-polishing pre-hardened plastic mold steel and manufacturing process thereof |
| CN114807774A (en) * | 2022-06-21 | 2022-07-29 | 育材堂（苏州）材料科技有限公司 | Hot work die steel, heat treatment method thereof and hot work die |
| CN116103567A (en) * | 2023-01-31 | 2023-05-12 | 河钢工业技术服务有限公司 | High-mirror-surface corrosion-resistant die steel and powder for 3D printing and preparation method |
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| JP2001152246A (en) * | 1999-11-22 | 2001-06-05 | Sanyo Special Steel Co Ltd | Method for producing steel for plastic molding die excellent in toughness, mirror finishing property and machinability |
| CN109504896A (en) * | 2018-10-26 | 2019-03-22 | 如皋市宏茂重型锻压有限公司 | A kind of cupric height polishing pre-hardening plastic mould steel and its preparation process |
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| JPH11335775A (en) * | 1998-05-25 | 1999-12-07 | Sanyo Special Steel Co Ltd | Steel for metal mold for plastic molding, excellent in mirror-finish characteristics and machinability |
| JP2000087178A (en) * | 1998-09-17 | 2000-03-28 | Hitachi Metals Ltd | Prehardened steel for metal mold for plastic molding |
| JP2001152246A (en) * | 1999-11-22 | 2001-06-05 | Sanyo Special Steel Co Ltd | Method for producing steel for plastic molding die excellent in toughness, mirror finishing property and machinability |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270058A (en) * | 2020-01-22 | 2020-06-12 | 大冶特殊钢有限公司 | Heat treatment method for martensite precipitation hardening type stainless steel module after forging |
| CN111270058B (en) * | 2020-01-22 | 2021-08-20 | 大冶特殊钢有限公司 | Heat treatment method for martensite precipitation hardening type stainless steel module after forging |
| CN113355599A (en) * | 2021-05-24 | 2021-09-07 | 如皋市宏茂重型锻压有限公司 | High-polishing pre-hardened plastic mold steel and manufacturing process thereof |
| CN114807774A (en) * | 2022-06-21 | 2022-07-29 | 育材堂（苏州）材料科技有限公司 | Hot work die steel, heat treatment method thereof and hot work die |
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Application publication date: 20190920 |