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Composite casting product containing titanium carbide-based powder metallurgy product

A powder metallurgy and composite casting technology, applied in the field of metallurgy, can solve the problems of shedding, unreliable bonding, and high maintenance costs, and achieve the effects of extending service life, avoiding shedding and cracking, and satisfying wear resistance.

Active Publication Date: 2021-11-16
山东恒森特种装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This composite method is only the bonding between the two materials without diffusion fusion, resulting in unreliable bonding, often falling off and breaking during work, easy to damage the equipment, high maintenance costs, and easy to cause waste of materials

Method used

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  • Composite casting product containing titanium carbide-based powder metallurgy product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The picks of coal mine excavation equipment are produced by composite melting and casting process.

[0024] In this embodiment, the titanium carbide-based powder metallurgy product (TM50) includes the following components by mass percentage: 48% TiC, 8.5% Mn, 2% Mo, 1.5% Ni, 13% C, and 27% Fe. The titanium carbide-based powder metallurgy product (TM50) cemented carbide material is produced by sintering the above-mentioned components in proportion. The resulting titanium carbide-based powder metallurgy product (TM50) has a density of 6.5-6.6 and a hardness of HRA86-88. The matrix material is high manganese steel molten steel.

[0025] The following process steps are adopted:

[0026] The titanium carbide based powder metallurgy product (TM50) was placed in the top position of the working part in the pick die. Under the negative pressure environment, the high manganese steel matrix liquid steel is poured into the pick mold, and the pouring temperature is 1600 ℃. Where...

Embodiment 2

[0030] A drill bit for a rotary excavator is produced by a composite melting and casting process.

[0031] In this embodiment, the titanium carbide-based powder metallurgy product (TM45) includes the following components by mass percentage: 55% TiC, 9% Mn, 2% Mo, 1.7% Ni, 12% C, and 20.3% Fe. The titanium carbide-based powder metallurgy product (TM45) cemented carbide material is produced by sintering the above-mentioned components in proportion. The resulting titanium carbide-based powder metallurgy product (TM45) has a density of 6.4-6.5 and a hardness of HRA88-90. The matrix material also adopts molten steel of high manganese steel.

[0032] According to the process steps of the first embodiment above, the titanium carbide-based powder metallurgy product (TM45) was placed in the working part of the hammer drill mold. In a negative pressure environment, pour the matrix molten steel into the hammer drill mold, and the pouring temperature is 1500°C. Negative pressure enviro...

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Abstract

The invention discloses a composite casting product containing a titanium carbide-based powder metallurgy product, and belongs to the technical field of metallurgy. The titanium carbide-based powder metallurgy product in the product is generated by sintering the following components in percentage by mass: 48%-55% of TiC, 8.5%-9% of Mn, 2% of Mo, 1.5%-1.7% of Ni, 12%-13% of C and the balance of Fe. The metallurgical product and a base material are formed by one-time casting through a casting process, and dispersive metallurgical fusion is formed between the metallurgical product and the base material. By limiting the proportion relation of all the components in the titanium carbide-based powder metallurgy product, a coating structure carbide can be formed between the titanium carbide-based powder metallurgy product and the base material, the hardness requirement of a hard metallurgical product can be met, the wettability of the hard metallurgical product and the base material can be improved, dispersive metallurgical fusion between a metallurgical product and the base material is achieved, the requirements for abrasion resistance and firmness of the product are met, and the service life of the product is prolonged.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a composite casting product comprising a titanium carbide-based powder metallurgy product. Background technique [0002] Powder metallurgy products are cemented carbide materials produced by stirring, briquetting, and sintering powders of hard elements such as tungsten and titanium and elements such as cobalt and molybdenum. This material has a high hardness, which can reach HRA90--93, and is a superhard wear-resistant material widely used at present. However, due to the inherent defects of the existing cemented carbide made of powder metallurgy materials such as its internal pore structure and its low structural strength and poor toughness, it cannot form melting and diffusion with the matrix material, and it is difficult to form a fusion with the matrix material. Form a strong bond. [0003] At present, the method of compounding the cemented carbide material with the paren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/10B22D18/06B22D23/04
CPCC22C29/10C22C29/067B22D18/06B22D23/04
Inventor 孙岗
Owner 山东恒森特种装备有限公司
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