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Brazing material and preparation method thereof as well as brazing method using the material

A brazing material and brazing technology, applied in the direction of welding/cutting media/materials, welding equipment, manufacturing tools, etc., can solve the problems of high working temperature, connection strength and low working temperature

Inactive Publication Date: 2008-12-24
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a brazing material, and at the same time provides its preparation method and a brazing method using it to solve the problems of low connection strength and low working temperature existing in the connection between existing Ti(C,N)-based cermets and metals , to achieve a firm connection between Ti(C,N)-based cermet and steel, and make the connection joint have better connection strength and higher working temperature

Method used

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  • Brazing material and preparation method thereof as well as brazing method using the material
  • Brazing material and preparation method thereof as well as brazing method using the material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) According to mass percentage: Cu 45%, Ag 25%, Zn 23%, Ni 5%, Ti 1%, Si1%, weighed as 200 mesh Ag and Cu powder, 300 mesh Zn, Ni, Ti, Si The powder is milled and mixed in a planetary ball mill for 60 minutes, the ball-to-material ratio is 5:1, and the ball mill speed is 200r / min-300r / min to obtain alloy powder. (2) The alloy powder after ball milling is pressed with a powder forming press to obtain a compact with a pressure of 450Mpa; (3) The brazing material compact is sintered in a vacuum, and the sintering temperature is selected at about 750°C and kept for 15 minutes to obtain the thickness The brazing material sheet is about 1 to 3mm; (4) Then annealed and rolled into a brazing material sheet with a thickness of about 0.2mm.

Embodiment 2

[0027] (1) According to the mass percentage: Cu 43%, Ag 23%, Zn 21%, Ni 8%, Ti 2%, Si 3%, weighed to be 200 mesh Ag and Cu powder, 300 mesh Zn, Ni, Ti, The Si powder is ball-milled and mixed in a planetary ball mill for 90 minutes, the ball-to-material ratio is 5:1, and the ball mill speed is 200r / min-300r / min to obtain alloy powder. (2) The alloy powder after ball milling is pressed with a powder forming press to obtain a compact with a pressure of 500Mpa; (3) The brazing material compact is sintered in vacuum, and the sintering temperature is selected at about 780°C, and the temperature is maintained for 20 minutes to obtain the thickness The brazing material sheet is about 1 to 3mm; (4) Then annealed and rolled into a brazing material sheet with a thickness of about 0.2mm.

Embodiment 3

[0029] (1) According to the mass percentage: Cu 40%, Ag 20%, Zn 22%, Ni 10%, Ti 3%, Si 5%, weighed as 200 mesh Ag and Cu powder, 300 mesh Zn, Ni, Ti, The Si powder is ball-milled and mixed in a planetary ball mill for 120 minutes, with a ball-to-material ratio of 5:1, and the speed of the ball mill is 200r / min-300r / min to obtain alloy powder. (2) The alloy powder after ball milling is pressed with a powder forming press to obtain a compact with a pressure of 550Mpa; (3) The sintering of the brazing material compact is vacuum sintering, and the sintering temperature is selected at about 800°C and the temperature is kept for 30 minutes. A brazing material sheet with a thickness of about 1 to 3 mm is obtained; (4) then annealed and rolled into a brazing material sheet with a thickness of about 0.2 mm.

[0030] Brazing method embodiment 1:

[0031] (1) Cut the Ti(C,N)-based cermet and 45 steel into 35mm×8mm×6mm test pieces by wire-cut EDM. Before brazing, the Ti(C,N)-based cermet and ...

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Abstract

The present invention relates to a soldering material, a preparation method thereof and a soldering method with the soldering material, which belong to the preparation methods and applications of soldering materials. The present invention resolves the problem that the connection strength and the working temperature are low after the prior Ti(C, N)-based cermet is connected with a metal, thus realizing the firm connection between the Ti(C, N)-based cermet and steel, and ensures that the joint has good connection strength and a high working temperature. The mass percentage of the ingredients of the soldering material of the present invention is as follows: 40 percent to 45 percent of Cu, 20 percent to 25 percent of Ag, 21 percent to 23 percent of Zn, 5 percent to 10 percent of Ni, 1 percent to 3 percent of Ti and 1 percent to 5 percent of Si. The preparation method includes the following steps: mixing, pressing, sintering and rolling, rolling the soldering material into a soldering material sheet. The soldering method with the soldering material includes the following steps: presoldering preparation, assembly, temperature increasing and temperature decreasing. The soldering material and the soldering method which are adopted by the present invention successfully realize the firm connection between the Ti(C, N)-based cermet and 45 steel, the maximum room-temperature shearing strength of the joint reaches 268.5MPa, and the average shearing strength reaches 240.9MPa.

Description

Technical field [0001] The invention belongs to a preparation method and application of a brazing material, and specifically relates to a brazing material applied to the welding of Ti(C, N)-based cermets and steel, a preparation method thereof, and a welding method thereof. Background technique [0002] The development of modern industry has more and more demanding requirements for material performance. In many cases, metal materials can no longer meet the needs. In contrast, cermet materials have a series of excellent physical and chemical properties, such as good high-temperature strength, high hardness and excellent corrosion resistance. However, due to the brittleness, non-deformability and poor processing performance of cermet materials, it is difficult to manufacture cermet parts with complex structures. Therefore, it is inevitable to use connection technology for cermet parts with large sizes and complex structures. Through the connection technology, low-cost manufacturing...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/40B22F3/16B23K1/008B23K1/20
Inventor 熊惟皓叶大萌杨青青肖建华姚振华瞿峻
Owner HUAZHONG UNIV OF SCI & TECH
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