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A kind of pre-hardened mold steel replacing 45 mold steel and its preparation method

A technology of pre-hardening and die steel, applied in the field of pre-hardening die steel that replaces 45 die steel and its preparation, can solve the problems of unexplained wire performance indicators, no combined data description, and incomplete hardening of the core, etc. The effect of reducing defect risk, low cost and short process cycle

Active Publication Date: 2021-06-25
浙江德得贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, this invention also adds a small amount of kaolin to the raw material components, which improves the plasticity and service life, but it does not combine data to explain, nor does it clarify other performance indicators of the wire
[0005] At present, No. 45 die steel is widely used. Due to the poor hardenability of No. 45 die steel, the core cannot be completely hardened. defect risk

Method used

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  • A kind of pre-hardened mold steel replacing 45 mold steel and its preparation method
  • A kind of pre-hardened mold steel replacing 45 mold steel and its preparation method
  • A kind of pre-hardened mold steel replacing 45 mold steel and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: The pre-hardened mold steel that replaces 45 mold steel includes the following mass percentages:

[0037] C: 0.18%; Mn: 1.8%; Cr: 1.8%; S: 0.028%; P: 0.03%; the rest is Fe and impurities.

Embodiment 2

[0038] Embodiment 2: The pre-hardened die steel that replaces 45 die steel includes the following mass percentages:

[0039] C: 0.21%; Mn: 1.7%; Cr: 1.7%; S: 0.025%; P: 0.025%; the rest is Fe and impurities.

Embodiment 3

[0040] Embodiment 3: The pre-hardened mold steel that replaces 45 mold steels includes the following mass percentages:

[0041] C: 0.19%; Mn: 1.6%; Cr: 1.8%; P: 0.02%; S: 0.01%; the rest is Fe and impurities.

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Abstract

The invention discloses a pre-hardened mold steel replacing 45 mold steel and a preparation method thereof. The prehardened mold steel replacing 45 mold steel includes the following components in mass percentage: C: 0.18-0.22%; Mn: 1.6-1.8% ; Cr: 1.6~1.8%; S: ≤0.035%; P: ≤0.035%; the rest is Fe and impurities. Through the synergistic effect of carbon, manganese and chromium, the segregation of carbon element in the billet is slight, the internal and external hardness is uniform, 32~35HRC, reaching the quenched and tempered hardness of 45 die steel, which can replace 45 die steel, and can replace 45 die The use of steel means that it meets the requirements of use, so that the quenching and tempering heat treatment process can be omitted in the steel preparation process.

Description

technical field [0001] The invention relates to the technical field of metal composite materials, in particular to a pre-hardened mold steel replacing 45 mold steel and a preparation method thereof. Background technique [0002] Die steel is a type of steel used to make molds such as cold stamping dies, hot forging dies, and die casting dies. The quality of the mold directly affects the quality of the pressure processing process, the precision output of the product and the production cost, and the quality and service life of the mold are mainly affected by the material, preparation and heat treatment process of the mold itself in addition to the reasonable structural design and processing accuracy. . With the advancement of science and technology and the needs of social development, the requirements for mold materials are getting higher and higher, especially for large-scale mold materials. Manufacturing enterprises have brought serious losses; and the existing mold materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/38C22C33/04C21D8/00C21D1/25
CPCC21D1/25C21D8/005C22C33/04C22C38/38
Inventor 毛建其
Owner 浙江德得贸易有限公司