Forming agent and method for producing same, cemented carbide and method for producing same

CN122011789BActive Publication Date: 2026-07-03GANZHOU ACHTECK TOOL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GANZHOU ACHTECK TOOL TECH
Filing Date
2026-04-08
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing forming agents have poor lubrication effects in the preparation of cemented carbide, which requires greater pressure when the alloy powder is extruded in the mold, and is prone to defects such as green blank breakage, degreasing cracking and sintering deformation, affecting forming efficiency and quality.

Method used

A molding agent composed of paraffin wax, polyethylene glycol, stearic acid, fatty alcohol polyoxyethylene ether, and oleic acid is used. Through stepwise mixing, a synergistic multi-component system is constructed to reduce the internal friction between the powder and the mold wall, improve the powder's flowability and dispersibility, and enhance the mechanical properties of cemented carbide.

Benefits of technology

It improves the forming stability and mechanical properties of cemented carbide, reduces the defect rate of green blanks, enhances the bending strength and surface smoothness of green blanks, and ensures high-density and high-performance cemented carbide products.

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Abstract

This application relates to the field of powder metallurgy technology, and discloses a forming agent and its preparation method, as well as a cemented carbide and its preparation method. The forming agent, by mass percentage, comprises: 45%~55% paraffin wax, 25%~35% polyethylene glycol, 12%~18% stearic acid, and 5%~8% of the sum of fatty alcohol polyoxyethylene ether and oleic acid, wherein the mass ratio of the fatty alcohol polyoxyethylene ether to the oleic acid is (2~6):1. This forming agent achieves both improvement in the forming process and enhancement of the quality of the prepared cemented carbide.
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