Control device for residual stress and strain along with welding of titanium alloy

Abstract

The invention discloses a control device for residual stress and strain along with welding of a titanium alloy, and relates to a device capable of reducing the residual stress and strain of welding. The control device comprises a front point-by-point extruding device and a rotary extruding device, wherein the front point-by-point extruding device comprises a bottom plate; a direct-current motor and a worm speed reducer are respectively arranged on the bottom plate; an output shaft of the direct-current motor is connected with an input shaft of the worm speed reducer by a coupler; an output shaft of the worm speed reducer is connected with a cam; a front point-by-point extruding rod is arranged in a front point-by-point extruding rod through hole; the cam is contacted with the front point-by-point extruding rod; the rotary extruding device comprises a bottom plate; a guide column is arranged on the bottom plate and is fixed on the bottom plate by a support; a supporting plate is arranged on the guide column, and is arranged on the guide column by a sliding seat; a pressing bolt is contacted with the sliding seat by a screw hole of the support; the supporting plate is provided with an electric motor and a bearing seat; and an output shaft of the electric motor is connected with one end of a shaft by the coupler, and the other end of the shaft is connected with a rear friction pressing rod by a chuck.

Description

technical field [0001] The invention relates to a device capable of reducing welding residual stress and deformation, in particular a device for controlling residual stress and deformation of titanium alloy TC4 thin plate weldment with high yield strength and difficult to uniform plastic extension. Background technique [0002] Compared with other metal materials, titanium alloy has the following advantages: ①The specific strength (tensile strength / density) is high, the tensile strength can reach 1000-1400MPa, and the density is only 60% of steel; It is several hundred degrees higher than aluminum alloy, and can still maintain the required strength at moderate temperatures, and can work for a long time at a temperature of 450-500 ° C; ③ Good corrosion resistance, a layer of uniform and dense oxidation is immediately formed on the surface of titanium in the atmosphere Membrane, has the ability to resist erosion by various media; ④Good performance at low temperature; ⑤Low elas...

AI Technical Summary

Problems solved by technology

Although the TC4 alloy with hexagonal close-packed structure has good plasticity and toughness at room temperature, its deformation resistance is large and it is a difficult-to-deform material.

Therefore, it is not easy to control the deformation of titanium alloy thin-walled structures after welding.

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