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Plasticizer for ceramet production

A technology of cermets and molding agents, which is applied in the field of molding agents produced by powder metallurgy, and can solve the problems of low compaction strength, high pressing pressure, and easy dirt.

Inactive Publication Date: 2006-07-19
ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of rubber-based molding agents is good molding performance, but the disadvantage is that the residual carbon is high and difficult to control, inconvenient to use, and pollutes the vacuum system
The advantage of paraffin wax is that there is little residue, but the disadvantage is that the molding performance is not ideal, the compact strength is low, it is easy to dirty, it is inconvenient to use, and it pollutes the vacuum system
The advantage of PEG is that it is easy to use (water-soluble), has less residue, is suitable for spray drying, does not pollute the vacuum system, and is safe and environmentally friendly; the disadvantage is that the molding performance is not ideal, moisture absorption, and is greatly affected by the environment, the material is hard, and the pressing pressure is high.

Method used

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  • Plasticizer for ceramet production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: put into the autoclave together with the polyvinylpyridine of 20% by weight, the polyethylene glycol of 38%, the stearic acid of 2% and the dehydrated alcohol of 40%, be heated to about 50 ℃, and Stirring and blending to form a uniform solution, that is, to obtain the forming agent of the present invention, which is used for the production of ultrafine Ti(CN)-based cermets.

Embodiment 2

[0014] Embodiment 2: be that 40% polyvinylpyridine, 20% polyethylene glycol, 10% stearic acid and 40% dehydrated alcohol are put into autoclave together by weight percentage, be heated to about 50 ℃, and Stir and blend to form a uniform solution, that is, to obtain the forming agent of the present invention, which is suitable for the production of complex-shaped cermet products.

Embodiment 3

[0015] Embodiment 3: be that 24% polyvinylpyridine, 10% polyethylene glycol, 6% stearic acid and 60% dehydrated alcohol are put into autoclave together by weight percentage, are heated to about 50 ℃, and Stir and blend to form a homogeneous solution, that is, to obtain the molding agent of the present invention, which is suitable for the production of micron-based cermets.

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Abstract

The invention provides a plasticizer for ceramic metal production, which is prepared from 5-40% of polyvinylpyridine, 10-38% of polyethylene glycol, 2-10% of stearic acid, and 40-80% of anhydrous alcohol through heating, agitating and blending, and forming homogeneous solution. The invention can be applied into the production of cemented carbide and ceramics.

Description

technical field [0001] The invention relates to a molding agent for powder metallurgy production, especially a molding agent suitable for cermet production. Background technique [0002] In the production process of cermets, a certain amount of molding agent must be added in order to make powder compacted into products of various shapes. The molding agents currently used mainly include rubber: butadiene rubber, butadiene rubber, styrene-butadiene-styrene block polymer (SBS), styrene-isoprene-styrene (SIS), etc.; Paraffins; polyethylene glycol (PEG) water-soluble polymers. The advantages of rubber-based molding agents are good molding performance, but the disadvantages are that the residual carbon is high and difficult to control, inconvenient to use, and pollutes the vacuum system. The advantage of paraffin wax is that there is little residue, but the disadvantage is that the molding performance is not ideal, the compact strength is low, it is easy to dirty, it is inconven...

Claims

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Application Information

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IPC IPC(8): B22F1/00C04B35/632
Inventor 周书助肖哲王社权
Owner ZHUZHOU CEMENTED CARBIDE CUTTING TOOLS CO LTD
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