Tooling and method for controlling temperature field of spinning deformation temperature field of aluminum-lithium alloy storage tank hemispherical shell

Abstract

The invention relates to an aluminum and lithium alloy storage box hemispherical shell spinning deformation temperature field control tool and method, in particular to a large-size high-performance 2195 aluminum and lithium alloy storage box hemispherical shell spinning deformation temperature field control tool and method and belongs to the technical field of storage box shell manufacturing. The'large size' means that the inner diameter of a hemispherical shell is not less than phi 1200 mm, and the depth of the hemispherical shell is not less than 400 mm. The 'high performance' means that after the hemispherical shell is subjected to spinning deformation and subsequent heat treatment, the tensile strength of the hemispherical shell is not lower than 570 MPa, the yield strength of the hemispherical shell is not lower than 530 MPa, and the elongation of the hemispherical shell is not lower than 7.5%.

Description

technical field [0001] The invention relates to a tooling and method for controlling the spinning deformation temperature field of a hemispherical shell of an aluminum-lithium alloy storage tank, in particular to a large-size, high-performance 2195 aluminum-lithium alloy storage tank ellipsoidal surface hemispherical shell spinning deformation temperature field control The tooling and method belong to the technical field of storage tank shell manufacturing. The large size means that the inner diameter of the hemispherical shell is not less than Φ1200mm, and the depth of the hemispherical shell is not less than 400mm. High performance means that the hemispherical shell is deformed by spinning and After subsequent heat treatment, its tensile strength, yield strength and elongation should not be lower than 570MPa, 530MPa and 7.5%, respectively. 2195 aluminum-lithium alloy refers to the hemispherical shell whose raw material is Al-Cu-Li alloy, and the mass of its Cu element The co...

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Problems solved by technology

[0009] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to fill the technical blank of the domestic large-size 2195 aluminum-lithium alloy storage tank hemispherical shell spinning process, and to provide a kind of aluminum-lithium alloy storage tank hemispherical shell spinning Compression deformation temperature field control tooling and method, so as to ensure the uniformity of the temperature field in the deformation zone of the large-size 2195 aluminum-lithium alloy storage tank hemispherical shell blank during the entire spinning deformation process, slow down or eliminate the 2195 aluminum-lithium alloy in the full rotation The temperature gradient of the inner and outer walls of the alloy slab avoids the phenomenon of deep wrinkles and spinning cracks, and ensures the forming quality and forming accuracy of the large-size 2195 aluminum-lithium alloy tank hemispherical shell spinning blank

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