Device for thermally bending titanium alloy sheet into profiles and its thermal bending method

Abstract

The invention discloses a device for thermally bending a titanium alloy sheet into a profile and a thermal bending method thereof. The device includes an upper fixing block, a pressing block, a lower machine body, a bending upper fixing block, a bending block, a pressing hydraulic cylinder and Main bending hydraulic cylinder. First, the clamping device clamps the titanium alloy plate, and then heats the central area of ​​the plate through the flame heating pipe. After reaching a certain temperature, the whole plate is quickly transported to the first wear-resistant plate, and the pressing block moves downward until the second The three wear-resistant plates are fixed in contact with the upper part of the plate. At the same time, the heating wires in the first heating hole and the second heating hole keep the plate warm to reduce heat loss. The bending block moves downward to bend the whole plate, and finally The clamping device clamps the heated sheet and transports the sheet away. This device can solve the demand for short-time conversion from heating to bending of the hot bending process of titanium alloy plates, reduce heat dissipation time, provide bending consistency and uniformity, and meet the needs of high-precision titanium alloy V-shaped profiles.

Description

technical field [0001] The invention belongs to the technical field of bending titanium alloy plates, in particular to a device for thermally bending a V-shaped titanium alloy plate into a profile and a thermal bending method thereof. Background technique [0002] Titanium alloy V-shaped profiles are important raw materials for aircraft frames. Most of the production processes at home and abroad provide rolling and molding. Rolling technology will limit the size of the roll structure due to different rolling forces, resulting in heating restricted areas and increasing The transfer time between the heating station and the bending station is reduced. Moreover, because the plates are rolled into the rolls in sequence, the front end of the plate enters the rolls for rolling according to the predetermined rolling temperature, and the middle and rear ends of the plates cannot enter the rolls for rolling according to the predetermined temperature due to heat dissipation, which cann...

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Problems solved by technology

like Figure 8 As shown in the right figure, the vertical length of the V-shaped mold is a, the transverse width is b, a≥10b, the longitudinal length a is about 2m, and the transverse length is about 0.2m. The plate enters the mold from the heating station to the longitudinal direction for bending. The position time is t1, which will greatly increase t1, and will cause the front end of the plate to enter the mold for bending according to the predetermined bending temperature, and the middle and rear end of the plate cannot enter the mold for bending according to the predetermined temperature due to heat dissipation, and the plate cannot be well guaranteed. Uniformity and consistency of bends

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