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Hot-working die large round billet and preparation method thereof

A hot work die and round billet technology, applied in the metallurgical field, can solve the problems of easy head warping, high hardness, large alloy content, etc., and achieve the effect of small heat treatment deformation and high wear resistance

Pending Publication Date: 2021-10-01
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high alloy content of this steel type, the amount of alloy that needs to be added is large, the hardness is high, and the continuous casting is easy to warp. Most of the domestic use die casting, and the production is difficult.

Method used

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  • Hot-working die large round billet and preparation method thereof
  • Hot-working die large round billet and preparation method thereof
  • Hot-working die large round billet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0027] Embodiments 1-6 provide a method for producing a hot-work mold large round blank, and its chemical composition is shown in Table 1.

[0028] Table 1 Example 1-6 The chemical composition table of the hot work mold large round billet

[0029] Require C Si mn P S Cr Mo V Ca Al Ti Example 1 0.50 0.95 0.27 0.014 0.002 4.90 1.33 0.98 0.0026 0.018 0.003 Example 2 0.49 0.95 0.28 0.012 0.001 4.89 1.34 0.97 0.0019 0.021 0.003 Example 3 0.51 0.96 0.28 0.015 0.001 4.94 1.39 0.96 0.0061 0.023 0.004 Example 4 0.51 0.99 0.27 0.013 0.003 4.94 1.34 0.97 0.0058 0.018 0.003 Example 5 0.51 0.98 0.27 0.011 0.002 4.93 1.34 0.96 0.0021 0.019 0.004 Example 6 0.50 0.98 0.28 0.014 0.002 4.90 1.36 0.95 0.0015 0.019 0.003

[0030] Table 2 shows the alkalinity of the refining slag of hot-working mold blooms in Examples 1-6.

[0031] Table 2 Basicity of refining slag of hot w...

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PUM

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Abstract

The invention belongs to the technical field of metallurgy, and particularly relates to a hot-working die large round billet and a preparation method thereof. The hot-working die large round billet comprises the following chemical components in percentage by weight: 0.45 to 0.55 percent of C, 0.80 to 1.20 percent of Si, 0.2 to 0.4 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.003 percent of S, 4.5 to 5.5 percent of Cr, 1.2 to 1.5 percent of Mo, 0.8 to 1.2 percent of V, less than or equal to 0.010 percent of Ti, less than or equal to 0.030 percent of Al and the balance of Fe and inevitable impurities. The hot-working die large round billet prepared through the method provided by the invention is good in macrostructure, and the hardness meets the requirement of a user after annealing.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a large round billet of a hot work mold and a preparation method thereof. Background technique [0002] The alloy content of hot work die steel is high, reaching about 10%. It has the advantages of good toughness, thermal strength, thermal fatigue performance, high wear resistance, and small heat treatment deformation. Extrusion dies, tools for perforation, mandrels, press forging dies, plastic dies, etc. are also widely used in die-casting dies of aluminum, copper and their alloys. Due to the high alloy content of this steel type, the amount of alloy that needs to be added is large, the hardness is high, and the continuous casting is easy to warp. Most of the domestic use die casting, which is difficult to produce. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the prior art, and provide a large round bil...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/28C22C38/06C22C33/06B22D11/111B22D11/18C21D1/26B22D11/22C21D6/00
CPCC22C38/02C22C38/04C22C38/22C22C38/24C22C38/28C22C38/06C22C33/06B22D11/001B22D11/111B22D11/18C21D1/26B22D11/225C21D6/002C21D6/008C21D6/005
Inventor 张海霞韩蕾蕾陈良梁建国马传庆范斌张利平李金浩
Owner SHANDONG IRON & STEEL CO LTD
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