Corrosion-resistant and wear-resistant tool steel

A wear-resistant, tool steel technology, applied in the field of tool steel materials, can solve the problems of high cost of alloys, etc., and achieve the effects of high cost performance, excellent corrosion resistance and wear resistance, excellent corrosion resistance and wear resistance

Active Publication Date: 2022-04-12
武汉钜能科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because a large amount of Cr and V are used, especially V is a relatively expensive element, the cost of the alloy is relatively high. How to balance the performance and cost of the alloy to achieve the purpose of improving the overall cost performance of the alloy is the problem to be solved by the present invention

Method used

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  • Corrosion-resistant and wear-resistant tool steel
  • Corrosion-resistant and wear-resistant tool steel
  • Corrosion-resistant and wear-resistant tool steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The alloy of embodiment 1, microstructure such as figure 1 As shown, the second phase composition is Cr-rich M7C3 carbide and V-rich MC carbide, at least 80% of the two carbides have a particle size ≤ 3 μm, and the volume fraction of Cr-rich M7C3 carbide is 12%-20%, The volume fraction of V-rich MX carbides is 6%-10%.

Embodiment 2

[0078] Among the alloys of embodiment 2 to embodiment 8, the microstructures of embodiment 2 and embodiment 4 are respectively as follows figure 2 with image 3 As shown, in addition to the above two kinds of carbides, it also contains Ti-rich MX carbides with a particle size of ≤7 μm, at least 80% of which have a particle size of ≤3 μm, and are approximately spherical particles. The high-hardness Ti-rich MX carbides are distributed in the matrix in a fine dispersion manner, which can improve the wear resistance without too much damage to the machinability.

Embodiment 9

[0079] In the alloy of Example 9, due to the small amount of Ti added, it is detected that the wear-resistant TiC particle phase formed is too small, and the improvement of the wear resistance is limited.

[0080] (2) Heat treatment hardness

[0081] The alloys of Examples 1 to 9 were heat treated according to the process parameters in Table 3, and the hardness was tested.

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Abstract

The invention provides corrosion-resistant and wear-resistant tool steel which is prepared by adopting a rapid solidification process and comprises the following chemical components in percentage by mass: 1.2-3.5% of C, 0.4-1.0% of Si, 0.2-1.0% of Mn, 12-27% of Cr, 0.8-3.0% of Mo, less than or equal to 4% of Co, less than or equal to 10% of V, less than or equal to 4% of Nb, 0.5-6% of Ti and the balance of Fe and impurities. According to the corrosion-resistant and wear-resistant tool steel, the second phase is small in size and uniform in distribution, excellent comprehensive mechanical properties are achieved, and especially due to existence of the high-hardness second phase in the structure, the steel can have excellent wear resistance.

Description

technical field [0001] The invention relates to the technical field of tool steel materials, in particular to a corrosion-resistant and wear-resistant tool steel. Background technique [0002] Under some special working conditions, tools or parts are not only subjected to wear caused by direct contact with moving parts or hard abrasive particles in the working medium, but also corroded by moisture, acid or other corrosive agents, such as plastic mechanical extrusion injection molding Parts such as the screw, screw head or screw sleeve, on the one hand, due to the addition of a large amount of hard particles in the plastic, such as glass fiber, carbon fiber, etc., the wear of these parts is aggravated; chemical corrosion. [0003] In order to achieve a long service life of the parts used in these special working conditions, the tool steel used must have high wear resistance and corrosion resistance. One of the current methods to solve the alloy scheme applied to this type o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/30C22C38/24C22C38/26C22C38/28C22C33/02B22F9/08B22F3/15B22F3/115C21D1/18C21D6/00C21D8/00
CPCY02P10/20
Inventor 李小明
Owner 武汉钜能科技有限责任公司
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