Deformation correcting method of circumferential weld of thin-wall titanium alloy welding casing
A technology of annular welds and welding casings, which is applied in the field of product weld correction, can solve problems affecting the appearance of parts and product delivery, difficulties in heat correction, and bulging deformation at the butt joints, so as to meet the repair and rescue of faulty parts and meet the quality requirements Requirements, the effect of increasing the plasticity of the material
Active Publication Date: 2015-04-08
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
During automatic argon arc welding of this type of thin-walled titanium alloy welding receiver, the difference in diameter between the cylinder body and the mounting edge, the cylinder body and the cylinder body often results in local swelling and deformation at the butt joint, which affects the appearance of the parts and product delivery
The local welding deformation that is concave to the inside of the part can be corrected by using the expansion tool at high temperature in a vacuum state, while the local bulge deformation of the annular weld on the welding casing (outwardly protruding contour deformation), it is very difficult to use the expansion tool for thermal correction
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[0013] A rectification method for the deformed part of the annular weld of a thin-walled titanium alloy welding casing, using a device such as figure 1 As shown, the hot rolling correction device comprising an upper rolling plate 1, a lower rolling plate 2, an afterburning rod 3, a power supply 4 and a circuit 5 is carried out, including the following steps:
[0014] (1) Place the deformed part of the thin-walled titanium alloy welded casing ring weld between the upper rolling plate 1 and the lower rolling plate 2, and the booster rod 3 is directed toward the upper rolling plate 1 and the lower rolling plate 2 put pressure on;
[0015] (2) When the upper rolling plate 1, the lower rolling plate 2 and the deformed part are in full contact, the power supply 4 energizes the upper rolling plate 1 and the lower rolling plate 2 through the circuit 5, and the current passes through the The upper rolling plate 1, the deformed part and the lower rolling plate 2 form resistance heat to...
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The invention relates to a deformation correcting method of the circumferential weld of a thin-wall titanium alloy welding casing. According to the technical scheme, the method is implemented through a hot rolling correcting device which is composed of an upper rolling disc, a lower rolling disc, pressurizing mechanisms, a power supply and a circuit; the method comprises the following steps of pressurization, electric heating and rolling. The deformation correcting method of the circumferential weld of the thin-wall titanium alloy welding casing can effectively reduce the material strength of deformed portions, improve material plasticity and accordingly correct the deformed portions and meanwhile avoid correcting cracks, and can meet the quality requirements of repairing and remedying failure parts of the thin-wall titanium alloy welding casing of an aero-engine.
Description
technical field [0001] The invention relates to a method for correcting product weld seams, in particular to a method for correcting the deformed part of the annular weld seam of a thin-walled titanium alloy welding casing. Background technique [0002] In order to pursue a higher thrust-to-weight ratio and reduce the overall weight of the engine, the new aero-engine uses a large number of titanium alloy materials, many of which use large thin-walled titanium alloy welded casings, such as afterburner cylinders, diffusers, and external duct machines. box etc. During automatic argon arc welding of this type of thin-walled titanium alloy welding receiver, the difference in diameter between the cylinder body and the mounting edge, and the cylinder body and the cylinder body often results in local bulging deformation at the butt joint, which affects the appearance of the parts and product delivery. The local welding deformation that is sunken to the inside of the part can be cor...
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IPC IPC(8): B21D3/05
Inventor 任萍杨秀娟祝文卉李霞倪建成刘宝琪张大威
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION