A kind of sintering method of cemented carbide wrapping anti-adhesive coating

A technology of cemented carbide and anti-sticking coating, which is applied in the field of cemented carbide manufacturing, can solve the problems of limited number of compacts and affect production efficiency, and achieve the goals of simple use, improved sintering success rate, sintering output and production efficiency Effect

Active Publication Date: 2021-02-09
株洲金韦硬质合金有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The number of compacts loaded in the boat is limited, which affects production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment provides a sintering method for cemented carbide coating, which aims to reduce the scrap rate in the cemented carbide sintering process. Specific steps are as follows:

[0036] S1. Put the cemented carbide compact to be sintered into the filter basket, and then completely immerse the filter basket and the cemented carbide compact in it into the anti-stick coating, and keep shaking so that the anti-stick coating completely wraps the cemented carbide compact;

[0037] S2. Take the filter basket out of the anti-stick coating and let it stand, so that the excess anti-stick coating can flow out completely;

[0038] S3. Lay a layer of kraft paper in the boat, and then load the cemented carbide compact processed in step S2 into the boat. In this embodiment, a graphite boat with a size of 500*260*30mm is used to load the cemented carbide compact. For billet sintering, since the anti-stick coating has completely wrapped the compact, it can be sintered next to ea...

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PUM

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Abstract

The invention discloses a sintering method for wrapping a cemented carbide compact with an anti-stick coating. In the method, the cemented carbide compact is completely coated with the anti-stick coating and then sintered, thereby effectively avoiding the gap between the cemented carbide compact and the graphite boat. The bonding between the cemented carbide compacts reduces the scrap rate of sintering, increases the output of sintering, can greatly reduce the production cost, and has a very high promotional value.

Description

technical field [0001] The invention relates to the technical field of cemented carbide manufacturing, and more particularly, to a sintering method for a cemented carbide-wrapped anti-stick coating. Background technique [0002] Cemented carbide refers to an alloy material made of hard compound of insoluble metal and bonding metal by powder metallurgy process. Sintering is one of the most important processes in the production of cemented carbide. During the sintering process, the graphite boat for loading cemented carbide compacts is an important factor affecting the entire sintering process. The binder metal in cemented carbide has good wettability with graphite due to its high content of cobalt and nickel. When the binder metal turns into a liquid phase at the sintering temperature, the process of mutual diffusion and migration of the binder metal and carbon in the sintered alloy and the graphite boat will occur, resulting in the phenomenon that the sintered product stick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/10
CPCB22F3/1017
Inventor 罗杨
Owner 株洲金韦硬质合金有限公司
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