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Composite metal sheet for titanium-steel resistance brazing and preparation method thereof

A resistance brazing and metal sheet technology, applied in non-electric welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of poor welding effect, high welding cost, low welding efficiency, etc., to ensure welding performance and improve welding efficiency. , the effect of improving quality

Inactive Publication Date: 2020-08-07
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor welding effect, low welding efficiency and high welding cost when the transition metal powder is laid by the traditional powder spreading device, the invention proposes a composite metal sheet for titanium-steel resistance brazing

Method used

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  • Composite metal sheet for titanium-steel resistance brazing and preparation method thereof
  • Composite metal sheet for titanium-steel resistance brazing and preparation method thereof
  • Composite metal sheet for titanium-steel resistance brazing and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] First, select vanadium-molybdenum mixed powder and chromium-molybdenum mixed powder with molybdenum powder accounting for 10% by mass for compacting the composite metal sheet, and control the density of the vanadium-molybdenum alloy layer to 0.05g / cm 2 , the density of the chromium-molybdenum alloy layer is controlled to 0.04g / cm 2 .

[0036]Next, the pressed composite metal plate was placed between a titanium alloy plate and a stainless steel plate with dimensions of 80 mm in length, 20 mm in width, and 1.5 mm in thickness for resistance brazing to obtain a welded joint after welding. Among them, the main parameters of resistance brazing are welding current of 3.5KA, welding pressure of 0.5MPa, and welding time of 2S.

Embodiment 2

[0038] Adopt the same method as Example 1 to carry out the preparation of the composite metal sheet and the resistance brazing connection of the titanium alloy plate and the stainless steel plate, and obtain the corresponding welded joint, the only difference is: the density of the vanadium-molybdenum alloy layer is adjusted to 0.04g / cm 2 , the density of the chromium-molybdenum alloy layer is controlled to 0.04g / cm 2 .

Embodiment 3

[0040] Adopt the same method as Example 1 to carry out the preparation of the composite metal sheet and the resistance brazing connection of the titanium alloy plate and the stainless steel plate, and obtain the corresponding welded joint, the only difference is: the density of the vanadium-molybdenum alloy layer is adjusted to 0.06g / cm 2 , the density of the chromium-molybdenum alloy layer is controlled to 0.04g / cm 2 .

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Abstract

The invention belongs to the technical field of dissimilar metal welding. In order to solve the problems that during welding which is conducted after a traditional powder laying device is adopted forlaying transition metal powder, a welding effect is poor, the welding efficiency is low, and the welding cost is high, the invention discloses a titanium-steel resistance brazed compound metal slice.The compound metal slice is of a multi-layer structure which is formed by pressing powder, and comprises a vanadium-molybdenum alloy layer in contact with titanium, a chromium-molybdenum alloy layer in contact with steel, and brazing filler metal located between the vanadium-molybdenum alloy layer and the chromium-molybdenum alloy layer. When the compound metal slice is adopted for conducting resistance brazing on titanium-steel, not only can the welding efficiency be improved to guarantee a welding effect, but also powder waste can be reduced, so that the welding cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of dissimilar metal welding, and in particular relates to a composite metal sheet for titanium-steel resistance brazing and a preparation method thereof. Background technique [0002] Early welding was mainly used for the connection of the same material. With the wide application of new materials and new technologies, the connection of dissimilar metals has become more and more important in engineering applications. The connection of dissimilar metals can achieve the good performance of two materials. Combined, and the effect of reducing the total weight of the structure and optimizing the cost can be obtained. However, in the welding of dissimilar metals, due to the large differences in the structure, chemical composition, mechanical properties and physical properties of different metals, the welding of dissimilar metals is much more complicated than the welding of the same metals. Can reliable Connection ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/18B32B15/01B32B37/10B23K20/02B23K20/16B23K20/227B23K20/24B23K20/26
CPCB23K20/02B23K20/16B23K20/227B23K20/24B23K20/26B32B15/01B32B15/18B32B37/10
Inventor 张鹏贤乔永丰唐自政
Owner LANZHOU UNIVERSITY OF TECHNOLOGY