Plastic die steel with high intensity, high toughness and high corrosion resistance and production method thereof

A plastic mold steel, high-strength and high-toughness technology, applied in the direction of manufacturing tools, furnace types, furnaces, etc., can solve problems such as changes due to changes in various factors, comprehensive performance that cannot meet the requirements of the use environment, and unstable product performance. The effect of toughness and corrosion resistance improvement

Inactive Publication Date: 2016-05-04
SICHUAN JIANGYOU LIUHE STEAM TURBINE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the comprehensive performance of the existing plastic mold steel 1.2316 (3Cr17NiMo, 3Cr17Mo) can no longer meet the current environmental requirements of China's domestic plastic mold steel
Compared with S136, 1.2316 has a greater improvement in corrosion resistance and toughness, but because of the high Cr content of 1.2316, a large number of carbides (primary liquid precipitation carbides and secondary carbides) are brought about. The carbide distribution is easily changed by various factors in the production process, resulting in unstable product performance

Method used

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  • Plastic die steel with high intensity, high toughness and high corrosion resistance and production method thereof
  • Plastic die steel with high intensity, high toughness and high corrosion resistance and production method thereof
  • Plastic die steel with high intensity, high toughness and high corrosion resistance and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] Produce high-strength, high-toughness and high-corrosion-resistant plastic mold steel according to the following steps:

[0027] (1) Take the following raw materials in weight percentage: C0.14%, Si:0.33%, Cr11.80%, Mo1.06%, Ni2.40%, W1.10%, V0.21%, Mn0.70 %, the balance is Fe and other impurities; placed in a non-vacuum induction furnace for primary refining, the melting temperature is 1550-1620 °C; and then refined outside the furnace: refining in ladles and vacuum degassing refining furnaces, the melting temperature is 1560-1560 °C 1650°C; during the smelting process, adjust the content of each component to make the weight percentage meet the requirements, control the content of impurities as low as possible, and pour the solution into a consumable electrode;

[0028] (2) Place the consumable electrode in an electroslag furnace for remelting and refining to further reduce the content of impurities so that the impurities meet the following requirements: the weight per...

Embodiment 2

[0037] Produce high-strength, high-toughness and high-corrosion-resistant plastic mold steel according to the following steps:

[0038] (1) Take the following raw materials in weight percentage: C0.15%, Si0.32%, Cr11.50%, Mo1.05%, Ni2.39%, W1.09%, V0.25%, Mn0.65 %, the balance is Fe and other impurities; placed in a non-vacuum induction furnace for primary refining, the melting temperature is 1550-1620 °C; and then refined outside the furnace: refining in ladles and vacuum degassing refining furnaces, the melting temperature is 1560-1560 °C 1650°C; during the smelting process, adjust the content of each component to make the weight percentage meet the requirements, control the content of impurities as low as possible, and pour the solution into a consumable electrode;

[0039] (2) Place the consumable electrode in an electroslag furnace for remelting and refining to further reduce the content of impurities so that the impurities meet the following requirements: the weight perc...

Embodiment 3

[0048] Produce high-strength, high-toughness and high-corrosion-resistant plastic mold steel according to the following steps:

[0049] (1) Take the following raw materials in weight percentage: C0.135%, Si0.35, Cr12.00%, Mo1.04%, Ni2.41%, W1.08%, V0.22%, Mn0.68% , the balance is Fe and other impurities; placed in a non-vacuum induction furnace for primary refining, the melting temperature is 1550-1620 °C; and then refined outside the furnace: refining in ladles and vacuum degassing refining furnaces, the melting temperature is 1560-1650 °C ℃; during the smelting process, adjust the content of each component to make the weight percentage meet the requirements, control the content of impurities as low as possible, and pour the solution into a consumable electrode;

[0050] (2) Place the consumable electrode in an electroslag furnace for remelting and refining to further reduce the content of impurities so that the impurities meet the following requirements: the weight percentag...

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Abstract

The invention discloses a plastic die steel with high intensity, high toughness and high corrosion resistance. The plastic die steel comprises C, Si, Cr, Mo, Ni, W, V, Mn and the balance Fe and other impurities. The invention further discloses a production method of the plastic die steel with high intensity, high toughness and high corrosion resistance. The method includes the following steps of placing all the components into a non-vacuum induction furnace for primary smelting and then carrying out external refining to obtain consumable electrodes, remelting and refining the consumable electrodes to obtain electroslag ingots, carrying out heating forging or rolling on the electroslag ingots to obtain a primary plastic die steel product, and carrying out spheroidizing annealing thermal treatment and surface treatment on the primary plastic die steel product to obtain the finished plastic die steel product. The plastic die steel with high intensity, high toughness and high corrosion resistance can be produced through the method, the overall properties such as intensity, toughness and corrosion resistance are superior to those of existing plastic die steel #1.2316, and the service environment demands of current medium-and-high end plastic die steel with high intensity and high toughness in China can be met.

Description

technical field [0001] The invention relates to a plastic mold steel and a production method, in particular to a high-strength, high-toughness and high corrosion-resistant plastic mold steel with high performance in terms of strength, toughness and corrosion resistance and a production method. Background technique [0002] Plastic molds are molds used to produce plastic products, and plastic mold steel is steel molds used to produce plastic products. [0003] With the rapid development of the mold market, the requirements for the strength, toughness, corrosion resistance and polishability of plastic mold steel are getting higher and higher, and at the same time, there are higher requirements for the stability of different batches of mold steel performance. [0004] At present, the comprehensive performance of the existing plastic mold steel 1.2316 (3Cr17NiMo, 3Cr17Mo) can no longer meet the current environmental requirements of China's domestic plastic mold steel. Compared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/46C22C38/44C21D1/32C21D6/00C21D9/00
CPCC22C38/02C21D1/32C21D6/004C21D6/005C21D6/008C21D9/0068C22C38/04C22C38/44C22C38/46
Inventor 何梦华雷德江张华国丁勇
Owner SICHUAN JIANGYOU LIUHE STEAM TURBINE MATERIAL
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