Diffusion bonding method of hard alloy and metal

A cemented carbide and diffusion joining technology, applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems of low connection strength and complex process, improve the bearing capacity, increase the connection area, and facilitate mass production. Effect

Active Publication Date: 2013-09-18
哈尔滨瀚霖科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of complex process and low connection strength of the existing connection methods, and provides a diffusion connection method of cemented carbide and metal

Method used

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  • Diffusion bonding method of hard alloy and metal
  • Diffusion bonding method of hard alloy and metal
  • Diffusion bonding method of hard alloy and metal

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specific Embodiment approach 1

[0012] Specific embodiment one: a kind of diffusion bonding method of cemented carbide and metal in this embodiment is carried out through the following steps: 1. Texturing boss: by computer programming, cut the cemented carbide to be welded with a wire cutting machine Surface, so that the surface of the cemented carbide to be welded generates matrix bosses;

[0013] 2. Cleaning before welding: Use 80#, 200#, 400# and 800# sandpaper to grind the metal surface to be welded step by step, then put it in acetone for ultrasonic cleaning for 3-10min, and then dry it naturally to get the cleaned metal ; Put the hard alloy surface with the matrix boss into acetone and ultrasonically clean it for 5 minutes and then dry it to obtain the cleaned hard alloy;

[0014] 3. Diffusion connection: butt the surface to be welded of the cleaned hard alloy with the surface to be welded of the cleaned metal, then put it into a diffusion welding furnace, fix it with a pressure head, and then carry ou...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that: the height of the boss described in Step 1 is 1-2 mm, and the cross-section is 1×1 mm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the cemented carbide in step 1 is YG6, YG8 or YG15. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a diffusion bonding method of hard alloy and metal, and aims to solve the problems that the conventional bonding method is complicated in process and low in bonding strength. The diffusion bonding method comprises the following steps: 1, roughening a lug boss; 2, cleaning before welding; 3, performing diffusion bonding: putting the hard alloy and the metal which are cleaned into a diffusion bonding furnace, fixing the hard alloy and the metal with pressing heads, and performing diffusion bonding by the diffusion bonding process to achieve diffusion bonding of the hard alloy and the metal. The diffusion bonding method is simple in process and high in production efficiency; by the diffusion bonding method, metallurgical bonding of the hard alloy and the metal is effectively implemented, the bonding strength is improved, and using requirements of hard alloy / metal structural components can be met; the diffusion bonding method is applicable to the field of brazing.

Description

technical field [0001] The invention relates to a diffusion bonding method of cemented carbide and metal. Background technique [0002] Cemented carbide is a powder metallurgy product made of extremely hard metal carbides such as WC, TiC, etc. as the matrix, and Co, Ni, Cu, etc. as the binder. series of excellent performance. In the actual engineering application of cemented carbide, it is often necessary to achieve reliable connection between cemented carbide and dissimilar metals in order to give full play to the performance advantages of these two materials. Due to the high melting point and strong chemical stability of cemented carbide, brazing method is mainly used to realize the connection of cemented carbide. In the existing connection method, the preparation process of the brazing filler metal needs to be smelted step by step in an ultra-high vacuum electric arc furnace, and then prepared by a single-roller rapid solidification device, so the preparation process of...

Claims

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Application Information

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IPC IPC(8): B23K1/008B23K1/19B23K1/20
Inventor 张丽霞张若蘅田成龙雷敏亓钧雷冯吉才
Owner 哈尔滨瀚霖科技开发有限公司
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