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Tungsten copper and dissimilar metal welding structure and method

A technology of dissimilar metals and welding structures, applied in welding equipment, metal processing equipment, welding/welding/cutting items, etc., can solve the problems of time-consuming and laborious, complicated process operation, etc., and achieve stable and reliable process, high production efficiency and simple structure. Effect

Active Publication Date: 2022-04-29
无锡鑫巨宏智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This welding method removes the corundum powder on the surface one by one with a spray gun, which is time-consuming and laborious, and the process operation is relatively complicated

Method used

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  • Tungsten copper and dissimilar metal welding structure and method
  • Tungsten copper and dissimilar metal welding structure and method
  • Tungsten copper and dissimilar metal welding structure and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this embodiment, 4J29 alloy is selected as a dissimilar metal as an example for illustration.

[0041] The tungsten-copper alloy selected in this example has a melting point of 1450°C and a linear expansion coefficient of 5.5-5.8;

[0042] The melting point of 4J29 alloy is 1420-1455°C, the linear expansion coefficient is 4.6-5.2 at 20-450°C, and 5.1-5.5 at 450-600°C. As the temperature increases, the linear expansion coefficient gradually increases.

[0043] As shown in the figure, a welding structure of tungsten copper and dissimilar metals is used to weld a weldment 1 made of tungsten copper with a weldment 2 2 made of dissimilar metals. The weldment 1 is provided with an assembly hole 3, and the weldment Two 2 are inserted in the assembly hole 3.

[0044] Please refer to figure 1 with figure 2 , Welding piece 1 is molded by powder metallurgy through a mold, and the mold includes a mold body and an insert 4 for forming an assembly hole.

[0045] Please refer ...

Embodiment 2

[0051] In this embodiment, on the basis of Embodiment 1, it is more convenient to apply solder, so that the solder automatically fills the welding seam.

[0052] Please refer to Figure 6 to Figure 9 , when sintering and forming weldment-1, a plurality of solder holes 12 are formed along the periphery of assembly hole 3 on the top of weldment-1. 17 is placed in the solder hole 12, and the solder 17 flows into the welding seam along the inclined solder hole 12 after melting.

[0053] Please refer to Figure 7 with Figure 8 A retaining eaves 13 is provided between the solder hole 12 and the assembly hole 3 to prevent the solder 17 from sliding into the assembly hole 3 before melting, and a communicating hole 14 is provided below the retaining eaves 13 to communicate with the weld.

[0054] The molding method of the retaining eaves 13 is as follows: an outwardly protruding protruding strip 15 is provided on the top of the formwork 6. After the template 6 is taken out, the com...

Embodiment 3

[0062] Please refer to Figure 10 The difference between this embodiment and Embodiment 1 is that the insert body 5, the inlay 6 and the template 7 are all mold steel, and the top of the template 7 protrudes outside the assembly hole 3. Pull out the inlay 6, push the upper side of the template 7 inwardly with a driving device such as a hydraulic cylinder, so that the template 7 is close to the insert body 5, and demoulding is realized.

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Abstract

The invention provides a tungsten copper and dissimilar metal welding structure and method. A first weldment is provided with an assembly hole, and a second weldment is inserted into the assembly hole; the first weldment is formed by a mold in a powder metallurgy mode, and the mold comprises a mold body and an insert used for forming an assembly hole. The insert comprises an insert body, an insert body and a template, the insert body is detachably mounted between the insert body and the template, convex teeth are arranged on the outer wall of the template, the insert body and the template are made of ferromagnetic materials, and after the insert body is pulled out, the template is adsorbed by the insert body to be separated from the assembly hole, so that a tooth-shaped groove is formed in the inner wall of the assembly hole; the welding flux is melted in a welding seam between the second weldment and the assembly hole and fills the groove, so that the second weldment is meshed with the first weldment. Tungsten copper and dissimilar metal are reliably welded, and the process is easy and convenient to operate and high in efficiency.

Description

technical field [0001] The invention belongs to the technical field of metal welding, and in particular relates to a welding structure of tungsten copper and dissimilar metals. Background technique [0002] Tungsten copper is a composite metal material refined by combining high-purity tungsten powder and high-purity, plastic and high-conductivity copper powder through static pressure molding, high-temperature sintering, and melting processes. [0003] Tungsten-copper alloy combines the advantages of metal tungsten and copper, among which tungsten has a high melting point (tungsten melting point is 3410°C, copper melting point is 1080°C), and has a high density (tungsten density is 19.25g / cm, copper density is 8.92 / cm3); Copper has excellent electrical and thermal conductivity, and tungsten-copper alloy (composition generally ranges from WCu7 to WCu50) has uniform microstructure, high temperature resistance, high strength, arc ablation resistance, and high density; moderate e...

Claims

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Application Information

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IPC IPC(8): B23K1/00B23K103/18
CPCB23K1/00B23K2103/18
Inventor 李晓贤
Owner 无锡鑫巨宏智能科技有限公司
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