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Back auxiliary heating device for titanium and titanium alloy friction stir welding

A friction stir welding and auxiliary heating technology, used in metal processing equipment, welding equipment, non-electric welding equipment, etc., can solve the problems of wear on the top of the stirring head, insufficient heat generation, etc., to reduce strength, avoid uneven heating temperature, reduce wear effect

Active Publication Date: 2018-11-27
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of insufficient heat generation at the root of titanium and titanium alloy friction stir welding in the prior art, resulting in defects at the root and wear on the top of the stirring head, and to provide a back auxiliary heating for titanium and titanium alloy friction stir welding device

Method used

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  • Back auxiliary heating device for titanium and titanium alloy friction stir welding

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Embodiment 1

[0025] combine figure 1 Description of this embodiment is mainly aimed at titanium alloys with a thickness greater than 2 mm. In this application, the processing of titanium alloys with a thickness of 4 mm is taken as an example. A back auxiliary heating device for friction stir welding of titanium and titanium alloys in this embodiment includes a heating assembly , cooling components, insulation layer and control system four parts.

[0026]A back auxiliary heating device for friction stir welding of titanium and titanium alloys, including a support plate for supporting the welded parts and installed on the workbench and a control system for controlling the entire heating device, the support plate is composed of a welding The back backing plate 1 and two back backing plates 3 for fixing are spliced ​​together, the back backing plate 1 for welding is sandwiched between the two back backing plates 3 for fixing, the back backing plate 1 for welding is located directly below the w...

Embodiment 2

[0032] combine figure 1 Describe this embodiment, a back auxiliary heating device for friction stir welding of titanium and titanium alloys in this embodiment includes four parts: heating assembly, cooling assembly, heat insulation layer and control system, the cooling assembly only uses the backing plate for fixing, no longer Adding cooling channels instead of feeding coolant is mainly because the thickness of the titanium alloy plate is small and the heating temperature is relatively low. The reaction between the plate and the components in the air can be ignored, so the cooling part can be used for cooling. Such a setting can save energy and reduce the cost of use. Other compositions and connections are the same as in Embodiment 1.

Embodiment 3

[0034] combine figure 1 Describe this embodiment mode. A back auxiliary heating device for friction stir welding of titanium and titanium alloys in this embodiment mode includes four parts: a heating component, a cooling component, a heat insulating layer and a control system. The outside is wrapped with an insulating sleeve. Such setting can improve the heating efficiency and ensure the heating effect. Other composition and connection relation are identical with embodiment 1 or 2.

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Abstract

The invention relates to a back auxiliary heating device for titanium and titanium alloy friction stir welding. The back auxiliary heating device comprises a support plate and a control system and ischaracterized in that the support plate is spliced by a welding back base plate and a fixing back base plate, the welding back base plate is located under a welding area, the fixing back base plate islocated under a non-welding area, the surface of the welding back base plate is provided with a plurality of thermocouples distributed along the length direction of the welding back base plate at intervals, a heating component distributed along the length direction of the welding back base plate is arranged inside the welding back base plate, the thermocouples and the heating component are connected with the control system, the thermocouples detect the surface temperature of the welding back base plate and transmits the detection data to the control system, and the control system adjusts theheating component according to the detection data to allow the surface temperature of the welding back base plate to be kept at the set temperature. The back auxiliary heating device has the advantages that heating temperature is effectively controlled, the root defects of thick-plate titanium alloy welding are eliminated, stirring head abrasion during welding is reduced, and the quality and efficiency of titanium alloy friction stir welding are increased.

Description

technical field [0001] The invention relates to a heating device, in particular to a back auxiliary heating device for friction stir welding of titanium and titanium alloys. Background technique [0002] Friction Stir Welding (FSW) technology is a new solid-phase joining technology invented by the British Welding Technology Institute (TWI) in 1991. At present, important progress has been made in the field of welding of light metal materials such as aluminum and magnesium. Based on the many advantages of friction stir welding technology such as simplicity, high quality, high efficiency, environmental protection and automation, after more than 20 years of research and development worldwide, friction stir welding has achieved remarkable development and many successful achievements in the field of light metal materials. industrial applications. This friction stir welding method is particularly suitable for welding aluminum, magnesium and titanium alloys, especially titanium al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/122B23K20/26
Inventor 高福洋郭宇凡高奇余巍
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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