Production mode of metal ceramic profiles

A production method and cermet technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of product deformation, uneven density, uneven drying and wetness, etc., and achieve the effect of qualified product size, prolonged stirring time, and uniform density.

Active Publication Date: 2019-12-20
自贡鼎力合金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The profiles often have one or several sizes as large; the specific gravity of cermet powder is much lower than that of cemented carbide powder. When mixing and stirring, it is easy to form agglomerates after adding the molding agent, resulting in uneven dryness and wetness inside. Unable to shape during pressing or uneven density
Due to the uneven density, different shrinkage will be caused during the sintering process of the product and the product will be deformed and become a waste product

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0007] The production method of cermet profiles, the extrusion production process includes: batching --→ wet grinding --→ mixing (adding molding agent) --→ pressing molding --→ drying --→ half plus half inspection --→ sintering -- -→ Finished product inspection, in which ingredients: dope WC and Co according to a certain ratio (different ratios according to grades) and other added elements (such as Ta and Nb); wet grinding: put the prepared materials into the ball mill, add Methanol is used as the medium, and the material is ground with alloy balls. The ball-to-material ratio is 4:1, and the rolling time is 24-72 hours; ) into the forming agent, and stirred in the mixer for 2-3 hours to form particles; pressing: pour the mixed particle material into the material cylinder of the extruder, and then vacuumize and hold the pressure for a certain period of time, and then press it in 2 to Under the pressure of 20Mpa, it is extruded through a mold; drying: put the extruded product on...

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PUM

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Abstract

The invention provides a production mode of metal ceramic profiles. An extrusion production technique comprises the steps of proportioning, wet grinding, mixing (adding of a forming agent), compression moulding, drying, half adding and half testing, sintering and finished product inspection. According to the production mode of the metal ceramic profiles, by changing the proportion of the forming agent, adjusting stirring frequency and prolonging the stirring time, the particle size of stirred materials is moderate, the density is even, the size of finished products is qualified, and deformation is basically avoided.

Description

technical field [0001] The invention relates to the technical field of profile production, in particular to a production method of cermet profiles. Background technique [0002] Cermet is made of titanium carbide, tungsten carbide, etc. as the matrix, and cobalt, nickel, chromium, tungsten, molybdenum and other metals. It has the characteristics of high hardness, high wear resistance, and high temperature resistance. The profiles include rods, pipes, etc. , strips, etc. Domestic cermets are generally produced by molding. Molding is generally formed by applying pressure to the mixture in the mold cavity in one or two directions. This method leads to uneven internal density of semi-finished products, especially on products with large sizes. The profiles often have one or several sizes as large; the specific gravity of cermet powder is much lower than that of cemented carbide powder. When mixing and stirring, it is easy to agglomerate after adding the forming agent, which lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C1/05C22C29/08
CPCC22C1/051C22C29/08B22F2998/10B22F1/10B22F3/1007B22F3/02B22F2009/043B22F3/14
Inventor 曹剑向钢
Owner 自贡鼎力合金材料有限公司
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