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High-plasticity and easy-to-be-eliminated extrusion molding agent

A molding agent and high plasticity technology, applied in the field of high plasticity and easy to exclude extrusion molding agents, can solve the problems of long production cycle, low production cycle, and the qualified rate of products that are prone to cracking of blanks, so as to avoid adverse effects, ash content, etc. Low, shortened production cycle effect

Active Publication Date: 2015-05-06
XIAMEN TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The problem brought about by this is that the production cycle of extruded products is too long, and the pass rate of products is not high because the blank is easy to crack.

Method used

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  • High-plasticity and easy-to-be-eliminated extrusion molding agent

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Embodiment Construction

[0018] Preferred embodiment of the present invention.

[0019] The molding agents of different proportions of the present invention are listed below, as well as the implementation effect of using the molding agent for cemented carbide extrusion production.

[0020]

[0021] Among them: polyvinyl butyral (PVB) is the bonding component, which acts as a skeleton support, and its content plays a major role in the strength of the compact. Butyl carbitol (diethylene glycol butyl ether) is the solvent, the higher the content, the better the plasticity of the billet. Both cocoic acid and dibutyl phthalate are surfactants, which can effectively promote the wetting of the forming agent on the particle surface and promote the uniform mixing of materials. Paraffin wax can maintain shape and plasticize, but too high content is unfavorable for the removal of forming agent.

[0022] Compared with the rods extruded by PVB molding agent, the drying time in the shade is shortened by 56% on...

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Abstract

The invention discloses a high-plasticity and easy-to-be-eliminated extrusion molding agent. The extrusion molding agent is prepared by the following raw materials, by weight: polyvinyl butyral 10-20%, butylcarbitol (diethylene glycol monobutyl ether) 60-70%, cocinic acid (yituomin) 1-5%, DBP (dibutyl phthalate) 1-5% and paraffin 10-15%. The extrusion molding agent provided in the invention provides a pressed shape with a fairly good strength and plasticity. With the extrusion molding agent provided in the invention, qualified rate of products is improved and production period of the extrusion products is shortened.

Description

technical field [0001] The invention relates to a high-plasticity extrusion molding agent which is easy to exclude. Background technique [0002] At present, the cemented carbide extrusion molding agent mainly adopts the paraffin (solvent-containing) process system. Because the viscosity of paraffin itself is low, and the paraffin (containing solvent) extrusion molding agent process contains a certain amount of oil components, the strength and plasticity of the blank after molding are low, and it is difficult to remove the molding agent in the subsequent process. Manufacturers of cemented carbide extrusion products based on paraffin wax technology mostly use long-term drying and pre-burning at a certain temperature and time to prevent the cracking of the blank and make the blank have a certain strength to meet the requirements of blank cutting. The problem brought about like this is that the production cycle of the extruded product is too long, and the qualified rate of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/20
Inventor 吴冲浒文晓肖满斗孙宝琦谢海唯项忠楠郑爱钦谢颖
Owner XIAMEN TUNGSTEN
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