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Powder metallurgy material and inlaying blade preparation method

A powder metallurgy and blade technology is applied in the field of preparation of powder metallurgy material inlaid blades, which can solve problems such as performance indicators failing to meet design requirements, generation of waste products, improper adjustment of preparation process, etc., to improve sintering quality, improve fluidity, and improve The effect of mechanical properties

Inactive Publication Date: 2018-08-24
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, apart from the material itself, what affects the performance of the material is its preparation process. Improper adjustment of the preparation process may produce waste products on the one hand, and on the other hand, the performance indicators may not meet the design requirements.

Method used

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  • Powder metallurgy material and inlaying blade preparation method
  • Powder metallurgy material and inlaying blade preparation method
  • Powder metallurgy material and inlaying blade preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1) Ball mill mixing: Add the balls into the ball mill tank, and the balls are made of tungsten carbide balls. Then add part of the tungsten carbide powder and all other components into the ball milling tank, then put the remaining tungsten carbide powder into the ball milling tank, add the ball milling liquid medium and start the ball milling. The ball milling time is 6 hours to form a mixture.

[0048] Among them, the ratio of the previously added tungsten carbide powder to the remaining tungsten carbide powder is 1:1, and the liquid medium of the ball mill is absolute ethanol, and the amount of absolute ethanol added is preferably to submerge the ball material by 2 cm.

[0049] The ball-to-material ratio during ball milling is 5:1, and the speed of the ball mill is 500 revolutions per minute.

[0050] Batch ball milling is used during ball milling, and the time ratio between ball mill rotation and stillness is 9:1. After ball milling, the ball mill jar is left to stan...

Embodiment 2

[0057] The same as Example 1, the difference is that the preparation method of this example is in the step 1) ball milling mixing step, the ball milling time is 4h.

Embodiment 3

[0059] The same as Example 1, the difference is that the preparation method of this example is in the step 1) ball milling mixing step, the ball milling time is 4.5h.

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Abstract

The invention discloses a powder metallurgy material and an inlaying blade preparation method, and mixing a mixed powder more evenly by choosing the proper ball-milling time is favorable for improvingthe mechanical property of a composite after cold pressing and hot pressing in the later period. Tungsten carbide is taken as a matrix, hafnium carbide is evenly dispersed in the matrix at certain ratio, the tungsten carbide and the hafnium carbide are organically combined at the ratio, the addition of the hafnium carbide greatly impedes the grain growth, the crystal structure is refined, the wetting angle of an adhesive cobalt is reduced, and the mobility of the cobalt is improved. Therefore, the sintering quality of a sample is improved.

Description

technical field [0001] The invention relates to a powder metallurgy material used for reinforcing blades of a shot blasting machine, and also relates to a preparation method for blades inlaid with powder metallurgy materials. Background technique [0002] The shot blasting technology is that the projectiles from the shot blasting tube are initially accelerated by the shot blasting wheel, thrown out through the directional sleeve set outside the shot blasting wheel, and then accepted by the blades, continue to accelerate through the centrifugal force along the blade surface, and fly out of the shot blasting wheel. device, so as to realize the shot blasting and strengthening of the surface of various parts. [0003] Since shot blasting is not limited by the size, shape and weight of the cleaned parts, and can improve the fatigue resistance of mechanical products and metal components, and eliminate stress concentration, the elimination of stress concentration requires a relativ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08C22C1/05
CPCC22C29/08B22F2998/10C22C1/051B22F2009/043B22F2009/045B22F3/02B22F3/14
Inventor 颜新宇王守仁王高琦温道胜夏佃秀张晓东薛传艺付坤
Owner UNIV OF JINAN