CN101967612A - Novel die steel - Google Patents
Novel die steel Download PDFInfo
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- CN101967612A CN101967612A CN2010102519630A CN201010251963A CN101967612A CN 101967612 A CN101967612 A CN 101967612A CN 2010102519630 A CN2010102519630 A CN 2010102519630A CN 201010251963 A CN201010251963 A CN 201010251963A CN 101967612 A CN101967612 A CN 101967612A
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Abstract
The invention discloses novel die steel. The novel die steel comprises the following components in percentage by weight: 0.3 to 0.6 percent of 3Cr2Mo, 2.0 to 2.5 percent of 5NiSCa, 0.7 to 0.9 percent of Y20CrNi3AIMnMo(SM2), 3.0 to 4.0 percent of Y55CrNiMnMoV(SM1), 5.0 to 6.0 percent of 4Cr5MoVS and 0.2 to 0.25 percent of carbon (C), which ensure that the die steel has obvious hardness and toughness, and rare earth lanthanum (La) and cerium (Ce) which have high chemical activity are added to neutralize oxygen and sulfur in the steel and enable the oxygen and the sulfur to undergo violent reaction to purify the steel and deteriorate, thus the harm of trace impurities is reduced or even eliminated, metallurgical quality and hardenability are improved, and the overall performance of the steel can be obviously improved.
Description
Technical field
The present invention relates to a kind of metal material field, be specifically related to a kind of die steel.
Background technology
In the prior art scheme, general pre-hardening type steel is to make at elements such as containing adding on the basis of 0.3%～0.5%C suitable Cr, Mn, Ni, Mo, V, generally after fully forging, make module, be heat-treated to the hardness of requirement in advance after, for the applying unit molding.
P20 (3Cr2Mo) is external most popular pre-duroplasts die steel, its quenching temperature is 830 ℃～870 ℃, tempering range is 550 ℃～600 ℃, in advance firmly to 30～35HRC, the P20 steel has been listed China's standard of alloy tool steels in, and be that some factories adopt, the suitable televisor of making of P20 steel, large plastic mould tools such as the shell of large-scale radio-cassette player and Washing Machine Panel lid, its machinability and polishing performance are good, the 718th, the remodeling P20 steel that Sweden produces, than P20 higher hardening capacity is arranged, can in a big way, keep hardness even after modified, when some factories of China use these steel, sometimes pre-hard hardness is reduced to about 28HRC, to overcome the difficulty on the machining.But its toughness is not fine, can not satisfy the demand, and load causes fracture easily for withstanding shocks.Publication number is a kind of die steel that CN1940113 announces, but the performance of steel still can not meet the needs of production in this scheme.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, provides a kind of hardness, wear resistance and toughness higher die steel.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of new die steel, each composition is that 0.3%-0.6%, Y20CrNi3AIMnMo (SM2) are that 3.0%-4.0%, 5NiSCa are that 2.0-2.5%, 4Cr5MoVS are that 5.0%-6.0% and C are 0.2%-0.25% for 0.7%-0.9%, Y55CrNiMnMoV (SM1) by its weight proportion: 3Cr2Mo, and all the other are Fe.
Further technical scheme is that each composition is by the rare earth La that adds 0.3%-0.4% in its weight proportion.
Further technical scheme is that each composition is by the Rare-Earth Ce that adds 0.25%-0.35% in its weight proportion again.
Compared with prior art, the invention has the beneficial effects as follows:
The new die steel that the present invention announces, make die steel that significant hardness and toughness be arranged, again by adding rare earth La and Ce, because rare earth has the intensive chemically reactive, can in and oxygen, sulphur in the steel, make it to take place violent reaction, purify steel and rotten, alleviate even eliminated the harm of trace impurity, improved metallurgical quality and hardening capacity, the overall performance of steel is significantly improved.
Embodiment
The present invention is further elaborated below in conjunction with accompanying drawing.
Embodiment 1
A kind of new die steel, each composition by its weight proportion: 3Cr2Mo be 0.3%, Y20CrNi3AIMnMo (SM2) is 0.7%, Y55CrNiMnMoV (SM1) is 3.0%, 5NiSCa is 2.0,4Cr5MoVS be 5.0% and C be 0.2%, 0.3% rare earth La, 0.25% Rare-Earth Ce all the other be Fe.
Embodiment 2
A kind of new die steel, each composition by its weight proportion: 3Cr2Mo be 0.45%, Y20CrNi3AIMnMo (SM2) is 0.8%, Y55CrNiMnMoV (SM1) is 0.35%, 5NiSCa is 2.25%, 4Cr5MoVS be 5.5% and C be 0.2%-0.25%, 0.35% rare earth La, 0.3% Rare-Earth Ce, all the other are Fe.
Embodiment 3
A kind of new die steel, each composition by its weight proportion: 3Cr2Mo be 0.6%, Y20CrNi3AIMnMo (SM2) is 0.9%, Y55CrNiMnMoV (SM1) is 4.0%, 5NiSCa is 2.5%, 4Cr5MoVS be 6.0% and C be 0.25%, 0.4% rare earth La, 0.35% Rare-Earth Ce, all the other are Fe.
Claims (3)
1. new die steel, it is characterized in that each composition is that 0.3%-0.6%, Y20CrNi3AIMnMo (SM2) are that 3.0%-4.0%, 5NiSCa are that 2.0-2.5%, 4Cr5MoVS are that 5.0%-6.0% and C are 0.2%-0.25% for 0.7%-0.9%, Y55CrNiMnMoV (SM1) by its weight proportion: 3Cr2Mo, all the other are Fe.
2. new die steel according to claim 1 is characterized in that described each composition is by the rare earth La that adds 0.3%-0.4% in its weight proportion.
3. new die steel according to claim 1 is characterized in that described each composition is by the Rare-Earth Ce that adds 0.25%-0.35% in its weight proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102519630A CN101967612A (en) | 2010-08-12 | 2010-08-12 | Novel die steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102519630A CN101967612A (en) | 2010-08-12 | 2010-08-12 | Novel die steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101967612A true CN101967612A (en) | 2011-02-09 |
Family
ID=43546832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102519630A Pending CN101967612A (en) | 2010-08-12 | 2010-08-12 | Novel die steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101967612A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409249A (en) * | 2011-12-02 | 2012-04-11 | 苏州卡波尔模具科技有限公司 | Die steel |
| CN102528376A (en) * | 2012-03-02 | 2012-07-04 | 台州学院 | Electric spark precision repairing method for plastic mould |
| CN103060672A (en) * | 2012-10-23 | 2013-04-24 | 铜陵科海光电技术有限公司 | Preparation process for die steel |
-
2010
- 2010-08-12 CN CN2010102519630A patent/CN101967612A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409249A (en) * | 2011-12-02 | 2012-04-11 | 苏州卡波尔模具科技有限公司 | Die steel |
| CN102528376A (en) * | 2012-03-02 | 2012-07-04 | 台州学院 | Electric spark precision repairing method for plastic mould |
| CN103060672A (en) * | 2012-10-23 | 2013-04-24 | 铜陵科海光电技术有限公司 | Preparation process for die steel |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110209 |