Abstract
The use of combined technology of gas forming and solid-phase pressure bonding for manufacturing large-diameter torus billets with diameter up to 1500 mm, wall thickness up to 8 mm, and diameter in cross-section up to 400 mm from titanium alloys for manufacturing of pipeline bends of desired size is shown. The technologymaes it possible to reduce production costs by increasing the productivity of the manufacturing process and applying new design and technological solutions. The possibility of using the SIMULIA Abaqus software package for modeling gas forming of titanium alloys in superplasticityconditions with non-uniform heating of the billets is considered. The method of combined thermo mechanical analysis (COUPLED TEMP-DISPLACEMENT) with inclusion of the creep effect was used.
Highlights
The widespread use of titanium alloys in mineral enrichment processes requires the improvement of the technology of manufacturing equipment and spare parts from this expensive material
Kilometers of pipes of the circulation system of technological solutions made of titanium alloys connect processing plants and facilities for the production of nickel, copper, and other metals
A promising technology for the production of titanium products is gas-forming in super plasticity conditions combined with pressure joining in the solid phase[1].It allows to reduce the cost of products by increasing the productivity of the manufacturing process and by using a new design and technological solutions
Summary
The widespread use of titanium alloys in mineral enrichment processes requires the improvement of the technology of manufacturing equipment and spare parts from this expensive material. A promising technology for the production of titanium products is gas-forming in super plasticity conditions combined with pressure joining in the solid phase[1].It allows to reduce the cost of products by increasing the productivity of the manufacturing process and by using a new design and technological solutions. Titanium sheet billets 1, 2 in the form of a disk and the gas inlet 3 are placed in the lower half-mould 4 of the die tooling, installed on the table 5 of the press inside the heater 6. The upper half-mould seals the heated billets along the outer and inner diameters and the gas inlet. By creating gas pressure in the inner cavity of the billets, the billets are formed into the cavity of the lower and upper half-moulds according to a certain law. The technology is promising for bends with a diameter of 50...250 mm
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