Rolling strengthening method used for removing weld crack of casing of dissimilar material
A technology of dissimilar materials and weld cracks, which is applied in the field of rolling strengthening for removing weld cracks of dissimilar materials, can solve problems that affect product quality and delivery cycle, have fluorescence appearance, and the effect is not ideal, so as to ensure the quality of products Effect of quality and lead time, reduction of surface roughness, elimination of surface residual stress
Inactive Publication Date: 2019-08-20
AECC AVIATION POWER CO LTD
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Problems solved by technology
[0002] The casing of dissimilar materials is composed of electron beam welding. When mechanical processing is performed after welding, small fishtail-shaped cracks are prone to appear in the heat-affected zone of the weld seam. During the fluorescence inspection process, there is a problem of fluorescence appearance.
Improve the surface processing quality by changing the processing tools, cutting parameters and manually grinding the weld area repeatedly, but the effect has not been ideal, affecting product quality and delivery cycle
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[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] As a certain preferred embodiment of the present invention, in combination with figure 1 and figure 2 As shown, a rolling strengthening method for crack removal of casing welds of dissimilar materials includes the following steps:
[0028] Step 1, install the ultrasonic rolling strengthening tool 4 on the tool seat 5 of the machining center, and connect the ultrasonic rolli...
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The invention discloses a rolling strengthening method used for removing a weld crack of a casing of a dissimilar material. The rolling strengthening method comprises the following steps: the step I:installing an ultrasonic rolling strengthening tool, and connecting the ultrasonic rolling strengthening tool with an ultrasonic generator main engine; the step II: inspecting and calibrating a tool bit of the ultrasonic rolling strengthening tool; the step III: clamping a workpiece onto a fixture; the step IV: performing rolling strengthening on the workpiece with the calibrated ultrasonic rolling strengthening tool; and the step V: inspecting whether the surface roughness of the workpiece strengthened by rolling reaches the roughness level requirement or not, and if the roughness level requirement is not reached, performing continued rolling strengthening. The rolling strengthening method disclosed by the invention is capable of restraining the sprout of a fine crack after electron beamweld turning of the casing of the dissimilar material, reducing the surface toughness of a weld of the casing and releasing the surface residual stress of a metal part, and ideal controllable pressurestress is preset to meet the requirement of fluorescence detection.
Description
technical field [0001] The invention belongs to the removal of casing welding seam cracks, and in particular relates to a rolling strengthening method for removing casing welding seam cracks of dissimilar materials. Background technique [0002] The casing of dissimilar materials is welded by electron beam. When mechanical processing is performed after welding, small fishtail-shaped cracks are likely to appear in the heat-affected area of the weld seam. During the fluorescence inspection process, there is a problem of fluorescence appearance. The quality of surface processing has been improved by changing processing tools, cutting parameters, and manually grinding the weld area repeatedly, but the effect has not been ideal, affecting product quality and delivery cycle. Contents of the invention [0003] Aiming at the technical problems in the prior art, the present invention provides a rolling strengthening method for removing cracks in the casing welds of dissimilar mat...
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IPC IPC(8): B23P6/04
CPCB23P6/04
Inventor余杰吴晓锋王元祥赵华卫沈毅陈海瑛汤丽周峰
OwnerAECC AVIATION POWER CO LTD