A heat insulation method for resistance heating local heat treatment of curved surface parts

Abstract

The invention discloses a heat insulation method for resistance heating local heat treatment of curved surface parts, comprising S1, using a 3D laser scanner to scan the target curved surface of the part, and obtaining the three-dimensional coordinates of the target curved surface; S2, according to the obtained three-dimensional coordinates and the design blueprint of the target curved surface , constructing a 3D repair model of the target curved surface; S3. According to the 3D repair model, control the machine tool to carry out numerical control molding of the heat insulation sheet to obtain a formed heat insulation sheet with the same shape as the target curved surface; S4. According to the size of the heating zone of the target curved surface , make holes on the formed heat insulation sheet, and the size of the hole is larger than the size of the target curved surface heating zone; S5. Spray the yttrium oxide thermal barrier coating on the inner surface of the formed heat insulation sheet, and spray the bonding layer, zirconia coating on the outer surface in sequence Layer and reflective layer; S6. Place the formed heat insulation sheet between the target surface of the part and the heating sheet, and make the opening on the formed heat insulation sheet face the heating area of ​​the target surface; S7. Turn on the heating sheet for the target part local heat treatment.

Description

technical field [0001] The invention belongs to the technical field of heat isolation, and in particular relates to a heat insulation method for resistance heating local heat treatment of curved surface parts. Background technique [0002] When large parts are machined to final size, if there are local surface defects (such as fluorescent defects), repair welding is required to remove the surface defects. Because repair welding will cause stress concentration at the welding position, failure to perform heat treatment after welding may lead to performance deterioration of parts in the use environment and failure failures, so heat treatment is required after welding to eliminate welding stress. Since the parts have been machined to final size, the overall heat treatment deformation is large and difficult to control, so local heat treatment is used to eliminate welding stress. [0003] Local heat treatment refers to the heat treatment method of locally heating the weld zone of...

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Problems solved by technology

[0008] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, to provide a resistance heating local heat treatment heat insulation method for curved surface parts, so as to solve the problem of poor heating and heat insulation effect of traditional resistance heating

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