CN105463336A - Plastic die steel with high strength, toughness, corrosion resistance and polishing performance and production method - Google Patents
Plastic die steel with high strength, toughness, corrosion resistance and polishing performance and production method Download PDFInfo
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- CN105463336A CN105463336A CN201510970081.2A CN201510970081A CN105463336A CN 105463336 A CN105463336 A CN 105463336A CN 201510970081 A CN201510970081 A CN 201510970081A CN 105463336 A CN105463336 A CN 105463336A
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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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- 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
- 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
- C22C38/18—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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Abstract
The invention discloses a plastic die steel with the high strength, toughness, corrosion resistance and polishing performance. The plastic die steel is composed of C, Cr, Mo, Ni, W, V, Mn and the balance Fe and other impurities. The invention further discloses a production method for the plastic die steel. The production method comprises the following steps that all component raw materials are taken and put into a non-vacuum induction furnace for primary melting and then are subjected to steel ladling and vacuum degassing refining to obtain consumable electrodes; the consumable electrodes are refused and refined to obtain electroslag ingots; plastic die steel blanks are obtained through the electroslag ingots by means of heating forging or rolling; the plastic die steel blanks are subjected to spheroidizing annealing heat treatment; and the plastic die steel blanks are subjected to surface treatment to obtain plastic die steel finished products. The plastic die steel with the high strength, toughness, corrosion resistance and polishing performance can be produced through the production method. The strength, toughness, corrosion resistance and polishing performance of the plastic die steel are remarkably improved compared with traditional plastic die steel, and the domestic service environment requirement for the plastic die steel in China at present can be met.
Description
Technical field
The present invention relates to a kind of plastic die steel and production method, particularly relate to and a kind of in intensity, toughness, corrosion-resistant, polishability, all there is high performance high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel and production method.
Background technology
Mould of plastics is the mould for the production of plastics, and plastic die steel is the steel die for the production of plastics.
Along with the high speed development of Die & Mould Market, require more and more higher for the intensity of plastic die steel, toughness, corrosion-resistant, polishability etc., had higher requirement to the stability of die steel different batches performance simultaneously.
At present, the over-all properties of existing plastic die steel S136 (4Cr13 series, FS136) can not meet the environment for use requirement of current China plastic die steel.
Show according to patent documentation, have some at present for improving the technology of the intensity of plastic die steel, toughness, corrosion-resistant, polishability, such as, number of patent application is the application for a patent for invention of " 201510379620.5 ", disclose a kind of preparation method of plastic mould steel, this technique has following steps: (1) smelt: carry out proportioning according to following component, C is 1-2 part, and Si is 1-2 part, Mn is 5-6 part, Cr is 2-3 part, Ni1-2 part, Cu5-8 part; Carry out preparing burden and smelting; (2) segmentation is heated thermal treatment: first time, Heating temperature was to 500-600 DEG C, and soaking time is 2h; Carry out second time heating afterwards, second time Heating temperature is to 3000-4000 DEG C.
The advantage of foregoing invention application is: have higher hardening capacity and hardenability, prevulcanized steel is made to have higher uniformity of hardness, thus obtain higher polishing performance, but its intensity, toughness, corrosion-resistant, polishability are still inadequate, are difficult to the environment for use requirement of satisfied current China plastic die steel.
Summary of the invention
Object of the present invention is just to provide to solve the problem a kind of and all has high performance high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel and production method in intensity, toughness, corrosion-resistant, polishability.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel, comprises each composition of following weight percent:
C0.18 ~ 0.27%, Cr11.0 ~ 13.00%, Mo0.85 ~ 1.30%, Ni0.50 ~ 1.00%, W0.85 ~ 1.30%, V0.15 ~ 0.35%, Mn0.50 ~ 1.00%, surplus is Fe and other impurity.
As preferably, other impurity described comprises: the Si of weight percent≤0.50%, the S of weight percent≤0.006%, the P of weight percent≤0.025%, the Cu of weight percent≤0.10%.
Illustrate: the title of above-mentioned each composition respectively: C carbon, Cr chromium, Mo molybdenum, Ni nickel, W tungsten, V vanadium, Mn manganese, Fe iron, Si silicon, S sulphur, P phosphorus, Cu copper.
A production method for high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel, comprises the following steps:
(1) get each composition raw material and be placed in non-vacuum induction furnace just refining, smelting temperature is 1520 ~ 1620 DEG C; Again through external refining: ladle, vacuum deaeration refining, smelting temperature is 1560 ~ 1650 DEG C; Regulate the content of each composition in fusion process, its weight percent is met the requirements, the content controlling impurity is as far as possible low, and solution casting becomes consumable electrode;
(2) consumable electrode is placed in electroslag furnace remelting refining, reduces the content of impurity further, make it meet the requirements, make ESR ingot;
(3) by ESR ingot heats forged or be rolled into the young product of plastic die steel;
(4) Spheroidizing Annealing thermal treatment is carried out to the young product of plastic die steel;
(5) surface treatment is carried out to the young product of plastic die steel, eliminate surface imperfection and its size, shape, surface quality are met design requirement, obtained plastic die steel finished product.
As preferably, in described step (4), described Spheroidizing Annealing thermal treatment comprises the following steps:
A, young for plastic die steel product are heated to 760 DEG C, are incubated 3 ~ 8 hours;
B, reheat to 830 ~ 850 DEG C, be incubated 2 ~ 8 hours;
C, slowly cool to 720 ~ 750 DEG C with the speed of≤25 DEG C/h, be incubated 20 ~ 50 hours;
D, stove are as cold as 400 DEG C of air coolings of coming out of the stove, until be cooled to normal temperature.
Beneficial effect of the present invention is:
High-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel can be produced by the present invention, its intensity, toughness, corrosion-resistantly compare traditional mould of plastics steel capital with polishability and have remarkable lifting, the environment for use requirement of current China plastic die steel can be met.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1:
Produce high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel according to the following steps:
(1) get each composition raw material of following weight percent: C0.23%, Cr12.30%, Mo0.95%, Ni0.80%, W0.92%, V0.20%, Mn0.75%, surplus is Fe and other impurity; Be placed in non-vacuum induction furnace just refining, smelting temperature is 1520 ~ 1620 DEG C; Again through external refining: refining in ladle, vacuum degassing refining furnace, smelting temperature is 1560 ~ 1650 DEG C; Regulate the content of each composition in fusion process, its weight percent is met the requirements, the content controlling impurity is as far as possible low, and solution casting becomes consumable electrode;
(2) consumable electrode is placed in electroslag furnace remelting refining, the content of further reduction impurity, impurity is made to meet following requirement: weight percent≤0.50% of Si, weight percent≤0.006% of S, weight percent≤0.025% of P, weight percent≤0.10% of Cu, after each component concentration of sampling analysis is qualified, make ESR ingot;
(3) by ESR ingot heats forged or be rolled into the young product of plastic die steel;
(4) Spheroidizing Annealing thermal treatment is carried out to the young product of plastic die steel, comprises the following steps:
A, young for plastic die steel product are heated to 760 DEG C, are incubated 3 ~ 8 hours;
B, reheat to 830 ~ 850 DEG C, be incubated 2 ~ 8 hours;
C, slowly cool to 720 ~ 750 DEG C with the speed of≤25 DEG C/h, be incubated 20 ~ 50 hours;
D, stove are as cold as 400 DEG C of air coolings of coming out of the stove, until be cooled to normal temperature;
(5) surface treatment is carried out to the young product of plastic die steel, eliminate surface imperfection and its size, shape, surface quality are met design requirement, obtained plastic die steel finished product.
Embodiment 2:
Produce high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel according to the following steps:
(1) get each composition raw material of following weight percent: C0.21%, Cr12.10%, Mo0.88%, Ni0.75%, W0.93%, V0.19%, Mn0.73%, surplus is Fe and other impurity; Be placed in non-vacuum induction furnace just refining, smelting temperature is 1520 ~ 1620 DEG C; Again through external refining: refining in ladle, vacuum degassing refining furnace, smelting temperature is 1560 ~ 1650 DEG C; Regulate the content of each composition in fusion process, its weight percent is met the requirements, the content controlling impurity is as far as possible low, and solution casting becomes consumable electrode;
(2) consumable electrode is placed in electroslag furnace remelting refining, the content of further reduction impurity, impurity is made to meet following requirement: weight percent≤0.50% of Si, weight percent≤0.006% of S, weight percent≤0.025% of P, weight percent≤0.10% of Cu, after each component concentration of sampling analysis is qualified, make ESR ingot;
(3) by ESR ingot heats forged or be rolled into the young product of plastic die steel;
(4) Spheroidizing Annealing thermal treatment is carried out to the young product of plastic die steel, comprises the following steps:
A, young for plastic die steel product are heated to 760 DEG C, are incubated 3 ~ 8 hours;
B, reheat to 830 ~ 850 DEG C, be incubated 2 ~ 8 hours;
C, slowly cool to 720 ~ 750 DEG C with the speed of≤25 DEG C/h, be incubated 20 ~ 50 hours;
D, stove are as cold as 400 DEG C of air coolings of coming out of the stove, until be cooled to normal temperature;
(5) surface treatment is carried out to the young product of plastic die steel, eliminate surface imperfection and its size, shape, surface quality are met design requirement, obtained plastic die steel finished product.
Embodiment 3:
Produce high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel according to the following steps:
(1) get each composition raw material of following weight percent: C0.22%, Cr12.45%, Mo0.1.20%, Ni0.85%, W0.91%, V0.22%, Mn0.74%, surplus is Fe and other impurity; Be placed in non-vacuum induction furnace just refining, smelting temperature is 1520 ~ 1620 DEG C; Again through external refining: refining in ladle, vacuum degassing refining furnace, smelting temperature is 1560 ~ 1650 DEG C; Regulate the content of each composition in fusion process, its weight percent is met the requirements, the content controlling impurity is as far as possible low, and solution casting becomes consumable electrode;
(2) consumable electrode is placed in electroslag furnace remelting refining, the content of further reduction impurity, impurity is made to meet following requirement: weight percent≤0.50% of Si, weight percent≤0.006% of S, weight percent≤0.025% of P, weight percent≤0.10% of Cu, after each component concentration of sampling analysis is qualified, make ESR ingot;
(3) by ESR ingot heats forged or be rolled into the young product of plastic die steel;
(4) Spheroidizing Annealing thermal treatment is carried out to the young product of plastic die steel, comprises the following steps:
A, young for plastic die steel product are heated to 760 DEG C, are incubated 3 ~ 8 hours;
B, reheat to 830 ~ 850 DEG C, be incubated 2 ~ 8 hours;
C, slowly cool to 720 ~ 750 DEG C with the speed of≤25 DEG C/h, be incubated 20 ~ 50 hours;
D, stove are as cold as 400 DEG C of air coolings of coming out of the stove, until be cooled to normal temperature;
(5) surface treatment is carried out to the young product of plastic die steel, eliminate surface imperfection and its size, shape, surface quality are met design requirement, obtained plastic die steel finished product.
Embodiment 4:
Produce high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel according to the following steps:
(1) get each composition raw material of following weight percent: C0.18%, Cr11.00%, Mo0.85%, Ni0.50%, W0.85%, V0.15%, Mn0.50%, surplus is Fe and other impurity; Be placed in non-vacuum induction furnace just refining, smelting temperature is 1520 ~ 1620 DEG C; Again through external refining: refining in ladle, vacuum degassing refining furnace, smelting temperature is 1560 ~ 1650 DEG C; Regulate the content of each composition in fusion process, its weight percent is met the requirements, the content controlling impurity is as far as possible low, and solution casting becomes consumable electrode;
(2) consumable electrode is placed in electroslag furnace remelting refining, the content of further reduction impurity, impurity is made to meet following requirement: weight percent≤0.50% of Si, weight percent≤0.006% of S, weight percent≤0.025% of P, weight percent≤0.10% of Cu, after each component concentration of sampling analysis is qualified, make ESR ingot;
(3) by ESR ingot heats forged or be rolled into the young product of plastic die steel;
(4) Spheroidizing Annealing thermal treatment is carried out to the young product of plastic die steel, comprises the following steps:
A, young for plastic die steel product are heated to 760 DEG C, are incubated 3 ~ 8 hours;
B, reheat to 830 ~ 850 DEG C, be incubated 2 ~ 8 hours;
C, slowly cool to 720 ~ 750 DEG C with the speed of≤25 DEG C/h, be incubated 20 ~ 50 hours;
D, stove are as cold as 400 DEG C of air coolings of coming out of the stove, until be cooled to normal temperature;
(5) surface treatment is carried out to the young product of plastic die steel, eliminate surface imperfection and its size, shape, surface quality are met design requirement, obtained plastic die steel finished product.
Embodiment 5:
Produce high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel according to the following steps:
(1) get each composition raw material of following weight percent: C0.27%, Cr13.00%, Mo1.30%, Ni1.00%, W1.30%, V0.35%, Mn1.00%, surplus is Fe and other impurity; Be placed in non-vacuum induction furnace just refining, smelting temperature is 1520 ~ 1620 DEG C; Again through external refining: refining in ladle, vacuum degassing refining furnace, smelting temperature is 1560 ~ 1650 DEG C; Regulate the content of each composition in fusion process, its weight percent is met the requirements, the content controlling impurity is as far as possible low, and solution casting becomes consumable electrode;
(2) consumable electrode is placed in electroslag furnace remelting refining, the content of further reduction impurity, impurity is made to meet following requirement: weight percent≤0.50% of Si, weight percent≤0.006% of S, weight percent≤0.025% of P, weight percent≤0.10% of Cu, after each component concentration of sampling analysis is qualified, make ESR ingot;
(3) by ESR ingot heats forged or be rolled into the young product of plastic die steel;
(4) Spheroidizing Annealing thermal treatment is carried out to the young product of plastic die steel, comprises the following steps:
A, young for plastic die steel product are heated to 760 DEG C, are incubated 3 ~ 8 hours;
B, reheat to 830 ~ 850 DEG C, be incubated 2 ~ 8 hours;
C, slowly cool to 720 ~ 750 DEG C with the speed of≤25 DEG C/h, be incubated 20 ~ 50 hours;
D, stove are as cold as 400 DEG C of air coolings of coming out of the stove, until be cooled to normal temperature;
(5) surface treatment is carried out to the young product of plastic die steel, eliminate surface imperfection and its size, shape, surface quality are met design requirement, obtained plastic die steel finished product.
Difference inspection by sampling mechanical property on the plastic die steel finished product of above-mentioned five embodiments, carry out room temperature tensile, hardness, shock test by the following method:
1. room temperature tensile, " V " type test with notched test piece:
Quenching: Heating temperature >=1030 DEG C, the 40 minutes time type of cooling: oil cooling,
Tempering: Heating temperature >=690 DEG C, the 120 minutes time type of cooling: air cooling,
Sample room temperature tensile, shock test technical requirements are as follows:
2. room temperature non-notch shock test:
Quenching: Heating temperature >=1030 DEG C, 40 minutes time, the type of cooling: oil cooling,
Tempering: Heating temperature 200 ~ 400 DEG C, 120 minutes time, the type of cooling: air cooling (tempering cycles twice),
The technical requirements of sample chamber temperature impact test is as follows:
Ballistic work AKv>=400J/cm
2,
Hardness HRC46 ~ 49;
Room-temperature mechanical property (stretch, impact) carries out to the material produced in the various embodiments described above as shown in the table, experimental data as can be seen from table, present method is adopted to make the plastic die steel material being used as high-intensity high-tenacity highly corrosion resistant height polishing performance, it is compared to S136 (4Cr13 series, FS136), under its strength property prerequisite of guarantee, effectively raise impelling strength, and greatly reduce in length and breadth to toughness properties difference, reach user's service requirements.Adopt plastic die steel material prepared by above-mentioned materials and corresponding process method, through room temperature tensile, impact, result shows that its mechanical property reaches design requirements completely.
Room temperature tensile, " v-notch impact " test-results table:
Room temperature tensile, non-notch Impulse Test Result table:
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of patent of the present invention.
Claims (4)
1. a high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel, is characterized in that: each composition comprising following weight percent:
C0.18 ~ 0.27%, Cr11.0 ~ 13.00%, Mo0.85 ~ 1.30%, Ni0.50 ~ 1.00%, W0.85 ~ 1.30%, V0.15 ~ 0.35%, Mn0.50 ~ 1.00%, surplus is Fe and other impurity.
2. high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel according to claim 1, is characterized in that: other impurity described comprises: the Si of weight percent≤0.50%, the S of weight percent≤0.006%, the P of weight percent≤0.025%, the Cu of weight percent≤0.10%.
3. a production method for high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel as claimed in claim 1, is characterized in that: comprise the following steps:
(1) get each composition raw material and be placed in non-vacuum induction furnace just refining, smelting temperature is 1520 ~ 1620 DEG C; Again through external refining: ladle, vacuum deaeration refining, smelting temperature is 1560 ~ 1650 DEG C; Regulate the content of each composition in fusion process, its weight percent is met the requirements, the content controlling impurity is as far as possible low, and solution casting becomes consumable electrode;
(2) consumable electrode is placed in electroslag furnace remelting refining, reduces the content of impurity further, make it meet the requirements, make ESR ingot;
(3) by ESR ingot heats forged or be rolled into the young product of plastic die steel;
(4) Spheroidizing Annealing thermal treatment is carried out to the young product of plastic die steel;
(5) surface treatment is carried out to the young product of plastic die steel, eliminate surface imperfection and its size, shape, surface quality are met design requirement, obtained plastic die steel finished product.
4. high-intensity high-tenacity highly corrosion resistant height polishing performance plastic die steel according to claim 3, it is characterized in that: in described step (4), described Spheroidizing Annealing thermal treatment comprises the following steps:
A, young for plastic die steel product are heated to 760 DEG C, are incubated 3 ~ 8 hours;
B, reheat to 830 ~ 850 DEG C, be incubated 2 ~ 8 hours;
C, slowly cool to 720 ~ 750 DEG C with the speed of≤25 DEG C/h, be incubated 20 ~ 50 hours;
D, stove are as cold as 400 DEG C of air coolings of coming out of the stove, until be cooled to normal temperature.
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| CN201510970081.2A CN105463336A (en) | 2015-12-22 | 2015-12-22 | Plastic die steel with high strength, toughness, corrosion resistance and polishing performance and production method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023104A (en) * | 2018-09-25 | 2018-12-18 | 成都先进金属材料产业技术研究院有限公司 | 4Cr13 plastic die steel and preparation method thereof |
| CN109694983A (en) * | 2017-10-20 | 2019-04-30 | 鞍钢股份有限公司 | High-mirror-surface corrosion-resistant plastic die steel and manufacturing method thereof |
| CN114438416A (en) * | 2022-01-30 | 2022-05-06 | 四川六合特种金属材料股份有限公司 | Cr-Mo-V-N alloy material for bottle blank mold and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109694983A (en) * | 2017-10-20 | 2019-04-30 | 鞍钢股份有限公司 | High-mirror-surface corrosion-resistant plastic die steel and manufacturing method thereof |
| CN109694983B (en) * | 2017-10-20 | 2020-09-29 | 鞍钢股份有限公司 | High-mirror-surface corrosion-resistant plastic die steel and manufacturing method thereof |
| CN109023104A (en) * | 2018-09-25 | 2018-12-18 | 成都先进金属材料产业技术研究院有限公司 | 4Cr13 plastic die steel and preparation method thereof |
| CN114438416A (en) * | 2022-01-30 | 2022-05-06 | 四川六合特种金属材料股份有限公司 | Cr-Mo-V-N alloy material for bottle blank mold and preparation method thereof |
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