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Method for preparing TA2/Q235 composite plate by electric resistance welding and welding material

A welding material and resistance welding technology, applied in the direction of resistance welding equipment, welding/cutting medium/material, welding medium, etc., can solve problems such as poor joint performance and difficult control of welding process, and achieve convenient and easy welding process Processing and molding, wide adaptability effect

Inactive Publication Date: 2012-09-19
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing TA2 / Q235 composite plate by resistance welding, which solves the problems in the prior art that the welding process is difficult to control, or the joint performance is poor due to brittle intermetallic compounds

Method used

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  • Method for preparing TA2/Q235 composite plate by electric resistance welding and welding material
  • Method for preparing TA2/Q235 composite plate by electric resistance welding and welding material

Examples

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Effect test

Embodiment 1

[0030] Select the content of each component element according to the data in Table 1, and prepare the Ti5Fe5Al30Ni30Cu30 intermediate layer alloy foil with a thickness of 150μm, a width of 5mm and a length of 0.5m according to the above steps.

[0031] Using the folded intermediate layer alloy foil as the intermediate layer, resistance spot welding was performed on TA2 and Q235, and the tensile shear strength of the welded joint was about 281MPa.

Embodiment 2

[0033] According to the data of Example 2 in Table 1, each component element and content were selected, and the linear velocity of the roll surface was controlled at 5m / s to prepare Ti10Fe10Al20Ni30Cu30 intermediate layer alloy foil with a thickness of about 130μm, a width of about 5mm and a length of about 0.8m. Using the folded intermediate layer alloy foil as the intermediate layer, resistance spot welding was performed on TA2 and Q235, and the tensile shear strength of the welded joint was about 298MPa.

Embodiment 3

[0034] Example 3: According to the steps of Example 1 above, select each component element and content according to the data of Example 2 in Table 1, and control the linear velocity of the roller surface at 5m / s to prepare a thickness of about 130μm and a width of about 5mm. Ti8Fe7Al20Ni35Cu30 intermediate layer alloy foil with a length of about 0.8m. Using the folded intermediate layer alloy foil as the intermediate layer, resistance spot welding was performed on TA2 and Q235, and the tensile shear strength of the welded joint was about 296MPa.

[0035] In summary, the intermediate layer alloy of the present invention has good flexibility and is convenient for processing and assembly; it has good matching with titanium and alloy steel during welding, the weld (nugget) is a single-phase fcc solid solution structure, and the joint is integrated mechanically. The performance is significantly improved; the preparation method of the intermediate layer alloy foil is simple in process,...

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Abstract

The invention discloses a method for preparing a TA2 / Q235 composite plate by electric resistance welding. A folded middle-layer alloy foil is arranged between a TA2 plate to be welded and a Q235 plate to be welded, and the welding operation is carried out by adopting a resistance spot-welding mode, so that the welding of the TA2 / Q235 plates is realized. The invention also discloses a middle-layer alloy and a preparation method thereof. The middle-layer alloy comprises the following components in the terms of the atomic percent: 5-10% of Ti, 5-10% of Fe, 20-25% of Al, 30-35% of Ni and 30-35% of Cu, wherein the total percent is 100%. The method is convenient and easy, and is wide in applicability; the welding material has excellent strength, toughness and corrosion performance; brittle intermetallic compound phases are not easily formed, a high-performance titanium-steel composite structure is easily obtained; and the welding material is simple in process and low in manufacturing cost.

Description

Technical field [0001] The invention belongs to the technical field of welding, and relates to a method for preparing a TA2 / Q235 composite board by resistance welding. The invention also relates to welding materials used in the method and a preparation method thereof. Background technique [0002] Titanium and its alloys have high specific strength and good corrosion resistance, and are important aerospace structural materials. However, due to the high price of titanium, its further development and application are limited. Steel is cheap and has good thermoelectric and mechanical properties. In some cases, a dissimilar material connection with the excellent characteristics of titanium alloy and stainless steel is required, such as certain parts in nuclear fuel reprocessing equipment in nuclear power plants, satellite fuel injectors and components in attitude propulsion control systems Recently, they are trying to be used as anti-corrosion linings for marine structural parts suc...

Claims

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Application Information

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IPC IPC(8): B23K11/11B23K35/30C22C30/02C22C1/02
Inventor 翟秋亚田健陈凯徐锦锋
Owner XIAN UNIV OF TECH
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