CN109504896A - A kind of cupric height polishing pre-hardening plastic mould steel and its preparation process - Google Patents
A kind of cupric height polishing pre-hardening plastic mould steel and its preparation process Download PDFInfo
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- CN109504896A CN109504896A CN201811255182.1A CN201811255182A CN109504896A CN 109504896 A CN109504896 A CN 109504896A CN 201811255182 A CN201811255182 A CN 201811255182A CN 109504896 A CN109504896 A CN 109504896A
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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
- 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
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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Abstract
The present invention relates to a kind of cupric height to polish 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≤0.30%, Mn 0.20~0.40%, Cr≤0.30%, Mo≤0.20%, V≤0.10%, P < 0.015%, S < 0.005%, Ni 1.60~2.00%, Al 0.40~0.70%, Cu0.40~0.70%, Fe surplus；Hot die steel of the present 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；It carries out expanding hydrogen annealing and Pre-hardening treatment again；Finally carry out aging strengthening model.The present invention has the advantages that hot die steel of the invention polishing performance with higher and lower cost of alloy.
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 cupric height polishing 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.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of cupric height polishing of inexpensive super-section bainite is pre- hard
Change plastic mould steel.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of cupric height polish pre-hardening plastic mould steel,
Its innovative 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
≤ 0.30%, Mn 0.20~0.40%, Cr≤0.30%, Mo≤0.20%, V≤0.10%, P < 0.015%, S < 0.005%, Ni
1.60~2.00%, Al 0.40~0.70%, Cu 0.40~0.70%, Fe surplus.
Further, in the chemical component of the mould steel each main alloy element best in quality percentage are as follows: C
0.08%, Si 0.15%, Mn 0.30%, Cr 0.20%, Mo 0.10%, V 0.05%, P < 0.010%, S < 0.003%, Ni
1.80%, Al 0.60%, Cu 0.60%, Fe surplus.
The invention solves another technical problem be to provide the system of cupric height polishing pre-hardening plastic mould steel a kind of
Standby technique.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of above-mentioned cupric height polishes pre-hardening plastic mold
Has the preparation process of steel, innovative point is: the preparation process includes the following steps:
(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 1150~1200 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1180 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, annealing furnace normalized treatment is then filled, 730~860 DEG C of heating temperature, keeps the temperature 10~15
Hour, it comes out of the stove and is air-cooled to 300 DEG C hereinafter, advance and retreat stove；
(5) expand hydrogen annealing: keeping the temperature 40~50 hours at 650~700 DEG C, be furnace-cooled to 200 DEG C or less and come out of the stove；
(6) Pre-hardening treatment: 850~890 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 temperature
200 DEG C of degree is 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 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 the more alloying elements of Cu-Ni-Al special
Point, on the basis of NAK80 reduce carbon, Al and Cu content, improve Ni content, steel grade of the present invention due to lower carbon content and
Improve the uniformity of hardness of steel, the Ni element of high level, and harden ability with higher, there is prevulcanized steel higher
Uniformity of hardness, to obtain higher polishing performance.
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
Low cost of alloy, 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 that 3 cupric height of embodiment polishes pre-hardening plastic mould steel CCT curve.
Fig. 2 is the aging characteristic that 3 cupric height of embodiment polishes pre-hardening plastic mould steel quenching and tempering temperature and hardness
Relation curve.
Fig. 3 is the metallographic structure that 3 cupric height of embodiment polishes pre-hardening plastic mould steel.
Fig. 4 is the dermatoglyph etching case that 3 cupric height of embodiment polishes pre-hardening plastic mould steel.
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 cupric height polishing pre-hardening plastic mould steel in this example:
C 0.10%, Si 0.30%, Mn 0.40%, Cr 0.30%, Mo 0.20%, V 0.10%, P 0.014%, S 0.004%, Ni
2.00%, Al 0.70%, Cu 0.70%, 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 1150~1200 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1180 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, annealing furnace normalized treatment is then filled, 730~860 DEG C of heating temperature, keeps the temperature 10~15
Hour, it comes out of the stove and is air-cooled to 300 DEG C hereinafter, advance and retreat stove；
(5) expand hydrogen annealing: keeping the temperature 40~50 hours at 650~700 DEG C, be furnace-cooled to 200 DEG C or less and come out of the stove；
(6) Pre-hardening treatment: 850~890 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 temperature
200 DEG C of degree is 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 0.07%, Si 0.10%, Mn 0.20%, Cr 0.15%, Mo 0.09%, V 0.04%, P 0.009%, S 0.002%, Ni
1.60%, Al 0.40%, Cu 0.40%, 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 1150~1200 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1180 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, annealing furnace normalized treatment is then filled, 730~860 DEG C of heating temperature, keeps the temperature 10~15
Hour, it comes out of the stove and is air-cooled to 300 DEG C hereinafter, advance and retreat stove；
(5) expand hydrogen annealing: keeping the temperature 40~50 hours at 650~700 DEG C, be furnace-cooled to 200 DEG C or less and come out of the stove；
(6) Pre-hardening treatment: 850~890 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 temperature
200 DEG C of degree is 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 cupric height polishing pre-hardening plastic mould steel in this example:
C 0.08%, Si 0.15%, Mn 0.30%, Cr 0.20%, Mo 0.10%, V 0.05%, P 0.010%, S 0.003%, Ni
1.80%, Al 0.60%, Cu 0.60%, Fe surplus.In the present embodiment, cupric height polishes the preparation work of pre-hardening plastic mould steel
Specific step is as follows for skill:
(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 1150~1200 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1180 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, annealing furnace normalized treatment is then filled, 730~860 DEG C of heating temperature, keeps the temperature 10~15
Hour, it comes out of the stove and is air-cooled to 300 DEG C hereinafter, advance and retreat stove；
(5) expand hydrogen annealing: keeping the temperature 40~50 hours at 650~700 DEG C, be furnace-cooled to 200 DEG C or less and come out of the stove；
(6) Pre-hardening treatment: 850~890 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 temperature
200 DEG C of degree is 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 cupric height polishes pre-hardening plastic mould steel after above-mentioned smelting and forging hot-working and heat treatment,
Final finished specification is (long * wide * is thick) 2500mm*1300mm*500mm module, and sampling is tested for the property:
A, phase-change characteristic: transformation temperature: Ac1, Ac3 and Ms point test result are respectively 736 DEG C, 809 DEG C and 340 DEG C；Its CCT curve
As shown in Figure 1；
B, aging characteristic: tempering hardness is as shown in Figure 2 with the aging characteristic curve that tempering temperature changes；
C, microscopic structure: the microscopic structure of the present embodiment mould steel is as shown in Figure 3.
D, dermatoglyph etching performance: the dermatoglyph etching case of the present embodiment is as shown in figure 4, 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 cupric height polishes pre-hardening plastic mould steel, it is characterised in that: each main in the chemical component of the mould steel
The mass percent of alloying element are as follows: C≤0.10%, Si≤0.30%, Mn 0.20~0.40%, Cr≤0.30%, Mo≤
0.20%, V≤0.10%, P < 0.015%, S < 0.005%, Ni 1.60~2.00%, Al 0.40~0.70%, Cu 0.40~
0.70%, Fe surplus.
2. cupric height according to claim 1 polishes pre-hardening plastic mould steel, it is characterised in that: the change of the mould steel
The best in quality percentage of each main alloy element in studying point are as follows: C 0.08%, Si 0.15%, Mn 0.30%, Cr 0.20%,
Mo 0.10%, V 0.05%, P < 0.010%, S < 0.003%, Ni 1.80%, Al 0.60%, Cu 0.60%, Fe surplus.
3. a kind of preparation process of the polishing pre-hardening plastic mould steel of cupric height described in the claims 1, it is characterised in that: institute
Preparation process is stated to include the following steps:
(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 1150~1200 DEG C again, soaking time is 10~20h after arriving warm samming；
(3) it forges hot-working: 900~1180 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, annealing furnace normalized treatment is then filled, 730~860 DEG C of heating temperature, keeps the temperature 10~15
Hour, it comes out of the stove and is air-cooled to 300 DEG C hereinafter, advance and retreat stove；
(5) expand hydrogen annealing: keeping the temperature 40~50 hours at 650~700 DEG C, be furnace-cooled to 200 DEG C or less and come out of the stove；
(6) Pre-hardening treatment: 850~890 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 temperature
200 DEG C of degree is 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811255182.1A CN109504896A (en) | 2018-10-26 | 2018-10-26 | A kind of cupric height polishing pre-hardening plastic mould steel and its preparation process |
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| CN201811255182.1A CN109504896A (en) | 2018-10-26 | 2018-10-26 | A kind of cupric height polishing pre-hardening plastic mould steel and its preparation process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016619A (en) * | 2019-05-28 | 2019-07-16 | 营口市特殊钢锻造有限责任公司 | A kind of mining High Strength Wear-Resistance Material and preparation method thereof |
| CN110257689A (en) * | 2019-04-29 | 2019-09-20 | 如皋市宏茂重型锻压有限公司 | A kind of high polishing pre-hardening plastic mould steel and its preparation process |
| 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 |
| CN114000067A (en) * | 2021-09-18 | 2022-02-01 | 恒碧沃金属材料(上海)有限公司 | Die steel material and preparation method thereof |
| CN116590619A (en) * | 2023-05-27 | 2023-08-15 | 湖南华菱湘潭钢铁有限公司 | Production method of seawater corrosion resistant steel 10CrMoAl |
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| CN105063512A (en) * | 2015-08-26 | 2015-11-18 | 山西太钢不锈钢股份有限公司 | Plastic die steel and manufacturing method thereof |
| CN105950991A (en) * | 2016-05-13 | 2016-09-21 | 如皋市宏茂重型锻压有限公司 | Copper-bearing high-polishing die steel and preparing technology thereof |
| CN106978564A (en) * | 2017-03-30 | 2017-07-25 | 钢铁研究总院 | A kind of precipitation hardening type plastic die steel and preparation method thereof |
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| JP2002180180A (en) * | 2000-12-08 | 2002-06-26 | Nippon Steel Corp | High tensile steel for superhigh heat input welding |
| CN105063512A (en) * | 2015-08-26 | 2015-11-18 | 山西太钢不锈钢股份有限公司 | Plastic die steel and manufacturing method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110257689A (en) * | 2019-04-29 | 2019-09-20 | 如皋市宏茂重型锻压有限公司 | A kind of high polishing pre-hardening plastic mould steel and its preparation process |
| CN110016619A (en) * | 2019-05-28 | 2019-07-16 | 营口市特殊钢锻造有限责任公司 | A kind of mining High Strength Wear-Resistance Material and preparation method thereof |
| 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 |
| CN114000067A (en) * | 2021-09-18 | 2022-02-01 | 恒碧沃金属材料(上海)有限公司 | Die steel material and preparation method thereof |
| CN116590619A (en) * | 2023-05-27 | 2023-08-15 | 湖南华菱湘潭钢铁有限公司 | Production method of seawater corrosion resistant steel 10CrMoAl |
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Application publication date: 20190322 |