CN104046901A - Wear-resistant steel for molds and manufacturing method of steel - Google Patents
Wear-resistant steel for molds and manufacturing method of steel Download PDFInfo
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- CN104046901A CN104046901A CN201410313717.1A CN201410313717A CN104046901A CN 104046901 A CN104046901 A CN 104046901A CN 201410313717 A CN201410313717 A CN 201410313717A CN 104046901 A CN104046901 A CN 104046901A
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Abstract
The invention discloses wear-resistant steel for molds. The wear-resistant steel is characterized by comprising the following main chemical components as raw materials in percentage by weight: 0.465-0.498 percent of C, 0.45-0.52 percent of Mn, 0.380-0.441 percent of Cr, 0.38-0.45 percent of Tu, 0.34-0.38 percent of V, 0.068-0.075 percent of Si, 0.005-0.006 percent of Pt, 0.0001-0.00015 percent of Sc, 0.0001-0.0015 percent of Lu, 0.0001-0.00015 percent of Dy, 0.0001-0.00015 percent of La, 0.0001-0.00015 percent of Gd and the balance of Fe and trace impurities. The wear-resistance steel for molds, which is disclosed by the invention, is strong in stability and favorable in wear resistance, cannot deform after multiple mold pressing and can keep the steel surface to obtain favorable polishing flatness.
Description
Technical field
The present invention relates to field of iron and steel smelting, be specifically related to a kind of preparation technology of die steel material.
Background technology
The methods such as mould refers in industrial production in order to injection moulding, blowing, extrudes, die casting or forging forming, smelting, punching press, stretching obtain various moulds and the instrument of desired product, are used for the instrument of formed article, normally by metal manufacture, are formed.The mould-type that factory is used is at present mainly cast molding mould, extrusion moulding and die-casting forming die.These moulds inevitably and between formed article rub in process of production, push, and inevitably there will be the problems such as burn into scuffing, distortion.
Between the quality of die quality and material therefor, exist direct relation, in moulding stock, using maximum is steel, the current domestic mould special type steel that seldom has, tends to exist many problems with the mould of common iron manufacture, as poor in wear resistance, general access times how after, there will be cut, contact surface is coarse, and formed article surface quality is poor, often need more mold exchange, increased production cost.
Summary of the invention
For the problem of prior art existence, the object of the present invention is to provide a kind of preparation technology of die steel material, the wear-resistant type die steel material that described composition steel are manufactured, stability is strong, wear resisting property is good, repeatedly indeformable after mold pressing, keeps steel surface to have good throwing Pingdu.
For achieving the above object, the technical scheme that the present invention takes is: a kind of wear-resistant type die steel material, it is characterized in that, it is (%) that described steel be take its raw material part composition of massfraction: its main chemical compositions as: C 0.465～0.498, Mn 0.45～0.52, Cr 0.380～0.441, Tu 0.38～0.45, V 0.34～0.38, Si 0.068～0.075, Pt 0.005～0.006, Sc 0.0001～0.00015, Lu 0.0001～0.00015, Dy 0.0001～0.00015, La 0.0001～0.00015, Gd 0.0001～0.00015, all the other are Fe and trace impurity,
Described wear-resistant type die steel material, it is 100% nano-carbon powder that the C adding adopts content;
Described wear-resistant type die steel material, the Mn adding, Cr, Tu, Si, V, Pt adopt simple substance or alloy;
Described wear-resistant type die steel material, the Mn adding, Cr, Tu, Si, V, Pt are for being 1:1～1.5:1～1.2:1:1～1.3 mixture in mass ratio;
Described wear-resistant type die steel material, production process comprises the steps: to get the raw materials ready, and melting drops into auxiliary material, and casting is quenched, and specifically comprises the steps:
(1) get the raw materials ready: select pig sanding to remove impurity, select nano-carbon powder simultaneously, Mn, Cr, Tu, Si, V, Pt simple substance or alloy;
(2) melting: the pig after removal of impurities is put into smelting furnace, be heated to 3200 ℃ of fusings;
(3) drop into auxiliary material: according to the mass ratio of auxiliary material to Mn, the Cr, Tu, Si, V, Pt simple substance or the alloy that drop into relative quantity nano-carbon powder, respective amount in the pig iron liquid after fusing; While then smelting furnace temperature being down to 2000 ℃, drop into Sc, Lu, Dy, La, Gd mixture;
(4) casting: evenly, iron liquid is poured into cast molding in the mould of different shaped shape;
(5) quench: rapid quench hardening after casting, the hardness of raising steel.
Wear-resistant type die steel material of the present invention, stability is strong, and wear resisting property is good, repeatedly indeformable after mold pressing, keeps steel surface to have good throwing Pingdu.
Embodiment
Embodiment 1
A wear-resistant type die steel material, is characterized in that, it is (%) that described steel be take its raw material part composition of massfraction: its main chemical compositions as: C 0.498, Mn 0.52, and Cr 0.441, and Tu 0.45, V 0.38, and Si 0.075, and Pt 0.006, Sc 0.00015, Lu 0.00015, and Dy 0.00015, and La 0.00015, Gd 0.00015, and all the other are Fe and trace impurity; After selecting pig sanding to remove impurity, join in smelting furnace, be heated to 3200 ℃ of fusings, then 100% nano-carbon powder that adds respective amount, Mn, the Cr, Tu, Si, V, the Pt simple substance piece that add respective amount, while until completely melted temperature being cooled to 2000 ℃, the mixture of Sc, Lu, Dy, La and Gd that to drop into mass ratio be 1:1:1:1:1, pours iron liquid in the mould of different shaped shape cast molding after even, rapid quench hardening after casting, the hardness of raising steel.
Detected result is as follows:
| Yield-point σ s(N/mm2) | Tensile strength sigma o(N/mm2) | Unit elongation % | Hardness (HV) | Wear-resisting indeformable number of times |
| 635 | 1060 | 11.8 | 420 | More than 11500 times |
Embodiment 2
A wear-resistant type die steel material, is characterized in that, it is (%) that described steel be take its raw material part composition of massfraction: its main chemical compositions as: C 0.465, Mn 0.45, and Cr 0.380, and Tu 0.38, V 0.34, and Si 0.068, and Pt 0.005, Sc 0.0001, Lu 0.0001, and Dy 0.0001, and La 0.0001, Gd 0.0001, and all the other are Fe and trace impurity; After selecting pig sanding to remove impurity, join in smelting furnace, be heated to 3200 ℃ of fusings, then 100% nano-carbon powder that adds respective amount, Mn, the Cr, Tu, Si, V, the Pt simple substance piece that add respective amount, while until completely melted temperature being cooled to 2000 ℃, the mixture of Sc, Lu, Dy, La and Gd that to drop into mass ratio be 1:1:1:1:1, pours iron liquid in the mould of different shaped shape cast molding after even, rapid quench hardening after casting, the hardness of raising steel.
Detected result is as follows:
| Yield-point σ s(N/mm2) | Tensile strength sigma o(N/mm2) | Unit elongation % | Hardness (HV) | Wear-resisting indeformable number of times |
| 650 | 1100 | 12 | 430 | More than 12000 times |
Claims (6)
1. a wear-resistant type die steel material, it is characterized in that, it is (%) that described steel be take its raw material part composition of massfraction: its main chemical compositions as: C 0.465～0.498, Mn 0.45～0.52, Cr 0.380～0.441, Tu 0.38～0.45, V 0.34～0.38, and Si 0.068～0.075, and Pt 0.005～0.006, Sc 0.0001～0.00015, Lu 0.0001～0.00015, and Dy 0.0001～0.00015, and La 0.0001～0.00015, Gd 0.0001～0.00015, and all the other are Fe.
2. wear-resistant type die steel material according to claim 1, is characterized in that, it is 100% nano-carbon powder that the C adding adopts content.
3. wear-resistant type die steel material according to claim 1, is characterized in that, the Mn adding, Cr, Tu, Si, V, Pt adopt simple substance or alloy.
4. wear-resistant type die steel material according to claim 1, is characterized in that, the Sc adding, Lu, Dy, La, Gd are for being 1:1～1.5:1～1.2:1:1～1.3 mixture in mass ratio.
5. wear-resistant type die steel material according to claim 1, is characterized in that, production process comprises the steps: to get the raw materials ready, and melting drops into auxiliary material, and casting is quenched.
6. wear-resistant type die steel material according to claim 2, is characterized in that, specifically comprises the steps:
(1) get the raw materials ready: select pig sanding to remove impurity, select nano-carbon powder simultaneously, Mn, Cr, Tu, Si, V, Pt simple substance or alloy;
(2) melting: the pig after removal of impurities is put into smelting furnace, be heated to 3200 ℃ of fusings;
(3) drop into auxiliary material: according to the mass ratio of auxiliary material to Mn, the Cr, Tu, Si, V, Pt simple substance or the alloy that drop into relative quantity nano-carbon powder, respective amount in the pig iron liquid after fusing; While then smelting furnace temperature being down to 2000 ℃, drop into Sc, Lu, Dy, La, Gd mixture;
(4) casting: evenly, iron liquid is poured into cast molding in the mould of different shaped shape;
(5) quench: rapid quench hardening after casting, the hardness of raising steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410313717.1A CN104046901A (en) | 2014-07-03 | 2014-07-03 | Wear-resistant steel for molds and manufacturing method of steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410313717.1A CN104046901A (en) | 2014-07-03 | 2014-07-03 | Wear-resistant steel for molds and manufacturing method of steel |
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| CN104046901A true CN104046901A (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410313717.1A Pending CN104046901A (en) | 2014-07-03 | 2014-07-03 | Wear-resistant steel for molds and manufacturing method of steel |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243169A (en) * | 1998-07-27 | 2000-02-02 | 通用电气公司 | Alloy steel |
| CN1445379A (en) * | 2002-03-15 | 2003-10-01 | 大同特殊钢株式会社 | Hot-working tool steel with good machine work performance and preparation method therefor |
-
2014
- 2014-07-03 CN CN201410313717.1A patent/CN104046901A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243169A (en) * | 1998-07-27 | 2000-02-02 | 通用电气公司 | Alloy steel |
| CN1445379A (en) * | 2002-03-15 | 2003-10-01 | 大同特殊钢株式会社 | Hot-working tool steel with good machine work performance and preparation method therefor |
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Application publication date: 20140917 |
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| RJ01 | Rejection of invention patent application after publication |