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Wear-resistant cast steel bucket tooth and production method thereof

A technology of cast steel and bucket teeth, which is applied in the field of wear-resistant steel, can solve the problems of high cost, achieve the effects of low production cost, simple preparation method, and improved wear resistance

Active Publication Date: 2013-07-17
西安翱翔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steel is added with 0.15-0.25% rare earth by weight, and the cost is relatively high

Method used

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  • Wear-resistant cast steel bucket tooth and production method thereof
  • Wear-resistant cast steel bucket tooth and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A wear-resistant cast steel bucket tooth consists of the following components in weight percentage:

[0027] C: 0.9%, Ti: 0.25%, Al: 0.12%, Mo: 2%, W: 3%, P: 0.02%, S: 0.008%, and the balance is Fe; The preparation method is carried out according to the following procedures:

[0028] 1) In terms of weight percentage, the composition is: C: 0.9%, Ti: 0.25%, Al: 0.12%, Mo: 2%, W: 3%, P: 0.02%, S: 0.008%, and the balance is Fe The molten steel is desulfurized, combined blowing on the top and bottom of the converter, RH vacuum degassing treatment, and the molten steel is released when the temperature of the molten steel is 1660°C;

[0029] 2) Cast steel bucket teeth with the desired shape in the wax mold shell with a preheating temperature of 450°C, and control the cooling time of the cast steel bucket teeth to 1550°C within 10 minutes;

[0030] 3) When the temperature of the cast steel bucket tooth is lowered to 1250°C, keep it warm for 2 hours to fully disperse and prec...

Embodiment 2

[0033] A wear-resistant cast steel bucket tooth consists of the following components in weight percentage:

[0034] C: 1.1%, Ti: 0.22%, Al: 0.1%, Mo: 2.6%, W: 4%, P: 0.012%, S: 0.009%, and the balance is Fe; The preparation method is carried out according to the following procedures:

[0035] 1) In terms of weight percentage, the composition is: C: 1.1%, Ti: 0.22%, Al: 0.1%, Mo: 2.6%, W: 4%, P: 0.012%, S: 0.009%, and the balance is Fe The molten steel is desulfurized, combined blowing at the top and bottom of the converter, RH vacuum degassing treatment, and the molten steel is released when the temperature of the molten steel is 1680°C;

[0036] 2) Cast steel bucket teeth with the desired shape in the wax mold shell with a preheating temperature of 480°C, and control the cooling time of the cast steel bucket teeth to 1550°C within 13 minutes;

[0037] 3) When the temperature of the cast steel bucket tooth is lowered to 1260°C, keep it warm for 1.5 hours to fully disperse an...

Embodiment 3

[0040] A wear-resistant cast steel bucket tooth consists of the following components in weight percentage:

[0041] C: 1.2%, Ti: 0.2%, Al: 0.08%, Mo: 3%, W: 5%, P: 0.011%, S: 0.02%, and the balance is Fe; The preparation method is carried out according to the following procedures:

[0042] 1) In terms of weight percentage, the composition is: C: 1.2%, Ti: 0.2%, Al: 0.08%, Mo: 3%, W: 5%, P: 0.011%, S: 0.02%, and the balance is Fe The molten steel is desulfurized, combined blowing at the top and bottom of the converter, RH vacuum degassing treatment, and the molten steel is released when the temperature of the molten steel is 1700°C;

[0043] 2) Cast steel bucket teeth with the desired shape in the wax mold shell with a preheating temperature of 500°C, and control the cooling time of the cast steel bucket teeth to 1550°C within 15 minutes;

[0044] 3) When the temperature of the cast steel bucket tooth is lowered to 1280°C, keep it warm for 1 hour to fully disperse and precipi...

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Abstract

The invention discloses a wear-resistant cast steel bucket tooth and a production method thereof. The wear-resistant cast steel bucket tooth comprises, by weight percent, 0.9-1.2% of C, 0.2-0.25% of Ti, 0.08-0.12% of Al, 2-3% of Mo, 3-5% of W, not more than 0.02% of P, not more than 0.02% of S, and the balance of Fe. The excavator bucket tooth produced by reasonable casting and heat treatment processes has the advantages that the wear resistance of the bucket tooth is increased for the impact of different loads in the sand condition, the tensile strength Rm is not smaller than 1650MPa, the hardness is HRC54-56, and Charpy impact Akv is not smaller than 17J.

Description

technical field [0001] The invention relates to the technical field of wear-resistant steel, in particular to a wear-resistant cast steel bucket tooth and a preparation method thereof. Background technique [0002] When the excavator is in operation, its bucket teeth are subject to strong wear and impact from different loads. It is required to be both wear-resistant and impact-resistant and insensitive to cold and brittleness. [0003] High manganese steel bucket teeth have good wear resistance under heavy load impact. However, the working conditions faced by bucket teeth are very complex, including low and medium load impacts, and high manganese steel bucket teeth cannot show the superiority of work hardening. [0004] High-silicon wear-resistant cast steel bucket teeth have low impact toughness and are prone to breakage during operation. The high-silicon wear-resistant cast steel developed in Japan that does not contain Ni and contains a small amount of Cr and Mo has the...

Claims

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Application Information

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IPC IPC(8): C22C38/14B22C9/04
Inventor 孙国栋邓娟利栾丽君李辉
Owner 西安翱翔新材料科技有限公司
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