Device for thermally bending titanium alloy plate into profile and thermal bending method thereof

Abstract

The invention discloses a device for thermally bending a titanium alloy plate into a profile and a thermal bending method thereof. The device comprises an upper fixing block, a pressing block, a lower machine body, a bending upper fixing block, a bending block, a pressing hydraulic cylinder and a main bending hydraulic cylinder. Firstly, a clamping device clamps a titanium alloy plate, then the central area of the plate is heated through a flame heating pipeline, and after a certain temperature is reached, the whole plate is rapidly conveyed to a first wear-resisting plate, and the pressing block moves downwards till a third wear-resisting plate is in contact with and fixed to the upper portion of the plate; meanwhile, heating wires located in first heating holes and second heating holes conduct heat preservation on the plate, heat loss is reduced, the bending block moves downwards to bend the whole plate, and finally the clamping device clamps the heated plate and conveys the plate away. By means of the device, the requirement for short-time conversion from heating to bending in a titanium alloy plate thermal bending technological process can be met, the heat dissipation time is shortened, the bending consistency and uniformity are improved, and the requirement for high-precision titanium alloy V-shaped profiles is met.

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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