CN103469067A - Production method of precise and long-service mold steel - Google Patents
Production method of precise and long-service mold steel Download PDFInfo
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- CN103469067A CN103469067A CN 201310426850 CN201310426850A CN103469067A CN 103469067 A CN103469067 A CN 103469067A CN 201310426850 CN201310426850 CN 201310426850 CN 201310426850 A CN201310426850 A CN 201310426850A CN 103469067 A CN103469067 A CN 103469067A
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Abstract
The invention discloses a production method of precise and long-service mold steel. The production method comprises the following steps: taking waste steel materials, smelting in an electric-arc furnace, testing, casting a steel ingot, carrying heat treatment, remelting electroslags, ingoting the electroslags, slowly cooling, annealing, sawing, heating, forging, obtaining a module of the mold steel, carrying out heat treatment and obtaining a finished product. The production method disclosed by the invention has the advantages that 2-3 types of new materials for the mold with precision, complexity and long service and a novel surface hardening technology with high wear resistance and corrosion resistance are created, and the service life can be prolonged by one time.
Description
Technical field
The present invention relates to a kind of production method of accurate complex long-service die steel.
Background technology
Modern industry, mould is leading.The height of mould industry level has become one of important symbol of weighing national production level.This target product is precision, complexity, long-life high-end moulding stock and goods thereof.Be mainly used in high-performance hammer forging die, high speed machine forging die, transfer mold, cold hot extrusion mould, punching die, drawing die, high-sped progressive die and all kinds of anti-corrosion, wear-resistant, minute surface injection mould etc.
Mould-forming process is as boosting productivity, and reduces material and consumption, reduces product cost, improves the quality of products and the important means of competitive power, more and more is subject to the attention of each industrial sector.Approximately 70,000,000,000 dollars of mould industry annual value of production in the world at present.China's mould output value in 2007 surpasses 80,000,000,000 yuan, become continue U.S., day after the third-largest die production state, but the while China be also the country of net importation mould maximum, particularly accurate complex long-service die steel, almost completely dependence on import in the world.
Summary of the invention
The deficiency of manufacturing for precision, complexity, long lifetime, high-end injection mold, cold-work die and hot-work die, the object of the present invention is to provide a kind of production method of accurate long-service die steel, it is the method that adopts moulding stock general character basic technology, mould fabrication of new materials and material engineering platform construction to combine, production application mould novel material and change the moulding stock technological process of production and the processing quality control techniques, make the moulding stock quality reach pure, even, structure refinement and die size is refined and the purpose of high-performance and low-cost.
Technical scheme of the present invention is achieved in the following ways: the production method of accurate long-service die steel comprises the following steps: scrap iron and steel material → electric arc furnace smelting → chemical examination → teeming → thermal treatment → esr → ESR ingot → slow cooling → annealing → sawing → heat → forge → die steel module → thermal treatment → finished product.
Described electric arc furnace smelting is: get C1.0 ± 0.1%, Si 0.85 ± 0.1%, Mn 1.0 ± 0.1%, Mo 4.0 ± 0.1%, W 1.6 ± 0.1%, V 1.95 ± 0.1%, P≤0.023%, S≤0.003%, all the other are iron; Be molten into molten steel successively in the intermediate frequency smelting furnace;
Described esr is: enter refining period after the chemical composition of molten steel is qualified, the time, refining temperature was at 1580 ℃ at 20-25 minutes--and 1600 ℃;
The present invention, formulate out 2～3 kinds of accurate complex long-service die use novel materials and novel high wear-resistant, anti-corrosion surface hardening technology.Can double work-ing life.
Embodiment
Embodiment 1:
The production method of accurate long-service die steel, comprise the following steps: scrap iron and steel material → electric arc furnace smelting → chemical examination → teeming → thermal treatment → esr → ESR ingot → slow cooling → annealing → sawing → heat → forge → die steel module → thermal treatment → finished product.Electric arc furnace smelting is: get C1.0 ± 0.1%, Si 0.85 ± 0.1%, Mn 1.0 ± 0.1%, Mo 4.0 ± 0.1%, W 1.6 ± 0.1%, V 1.95 ± 0.1%, P≤0.023%, S≤0.003%, all the other are iron; Be molten into molten steel successively in the intermediate frequency smelting furnace; Esr is: enter refining period after the chemical composition of molten steel is qualified, the time, refining temperature was at 1580 ℃ at 20-25 minutes--and 1600 ℃;
Embodiment 2:
The production method of accurate long-service die steel, comprise the following steps: just refine → LF of scrap iron and steel material → EBF refining → VD vacuum deaeration → chemical examination → cast molding → electroslag moulding → (ingot casting thermal treatment) → Heating Steel Ingots → forging → forging postheat treatment → annealing → semi-finishing → module carrying out flaw detection → thermal treatment → machining → finished product.
Claims (3)
1. the production method of accurate long-service die steel comprises the following steps: it is characterized in that:
Scrap iron and steel material → electric arc furnace smelting → chemical examination → teeming → thermal treatment → esr → ESR ingot → slow cooling → annealing → sawing → heat → forge → die steel module → thermal treatment → finished product.
2. the production method of accurate long-service die steel according to claim 1, it is characterized in that: described electric arc furnace smelting is: get C1.0 ± 0.1%, Si 0.85 ± 0.1%, Mn 1.0 ± 0.1%, Mo 4.0 ± 0.1%, W 1.6 ± 0.1%, V 1.95 ± 0.1%, P≤0.023%, S≤0.003%, all the other are iron; Be molten into molten steel successively in the intermediate frequency smelting furnace.
3. the production method of accurate long-service die steel according to claim 1, it is characterized in that: described esr is: enter refining period after the chemical composition of molten steel is qualified, the time, refining temperature was at 1580 ℃ at 20-25 minutes--and 1600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310426850 CN103469067A (en) | 2013-09-18 | 2013-09-18 | Production method of precise and long-service mold steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310426850 CN103469067A (en) | 2013-09-18 | 2013-09-18 | Production method of precise and long-service mold steel |
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| Publication Number | Publication Date |
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| CN103469067A true CN103469067A (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201310426850 Pending CN103469067A (en) | 2013-09-18 | 2013-09-18 | Production method of precise and long-service mold steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560563A (en) * | 2020-06-02 | 2020-08-21 | 舞阳钢铁有限责任公司 | Production method of electroslag type hot-working die steel plate |
| CN111647713A (en) * | 2020-04-29 | 2020-09-11 | 樟树市兴隆高新材料有限公司 | Electroslag treatment system for die steel production |
-
2013
- 2013-09-18 CN CN 201310426850 patent/CN103469067A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111647713A (en) * | 2020-04-29 | 2020-09-11 | 樟树市兴隆高新材料有限公司 | Electroslag treatment system for die steel production |
| CN111560563A (en) * | 2020-06-02 | 2020-08-21 | 舞阳钢铁有限责任公司 | Production method of electroslag type hot-working die steel plate |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |