Forming method of metal strip sealing tape

Abstract

The invention discloses a forming method of a metal strip sealing tape. The forming method comprises the steps of blank preparation, roll forming, stretch-forming correction and length and boundary dimension machining. A rectangular plate is adopted as a blank, machining allowance is reserved in a length direction and a width direction of the blank, the upper surface and the lower surface of the blank are synchronously rolled through the upper roller and the lower roller to form the upper molded surface and the lower molded surface of a sealing belt, and two ends of the sealing belt are clamped by a skin stretcher and are subjected to plastic stretching in the length direction of the sealing belt; in the plastic stretching process, the size of the sealing belt in the width direction needsto meet the final width requirement, and the sealing belt is machined according to the final length requirement and other boundary dimension requirements of the sealing belt. The required forming toolis simple, the forming period is short, and the straightness and the size precision are high.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, in particular to a forming method of a long metal sealing strip. Background technique [0002] The metal strip sealing strip is a kind of sealing part in the aero-engine, and the structure of the parts is as follows: figure 1 and figure 2 As shown, the part is a long metal strip with two bead, the aspect ratio is above 200, the bead size is small, the ratio of part width to bead depth is more than 20, on the bead and the bead Three rows of small holes are densely distributed in the middle of the ribs. In order to ensure the manufacturability of the subsequent small hole processing and the assembly requirements of the parts, it is necessary to ensure that the parts have good surface accuracy and straightness. The parts have the characteristics of large length and dimension, high surface precision and high straightness requirements. [0003] In view of the large length of the part...

AI Technical Summary

Problems solved by technology

[0003] In view of the large length of the part and the small size of the bead, the size of the mold required by the pressure molding is too large, and the forming of the part has high requirements for the size of the equipment platform, the plane accuracy of the equipment and the dimensional accuracy of the mold. Increased processing difficulty and tooling costs

At present, no domestic and foreign publications on the forming mold or forming method of this type of metal strip sealing strip parts have been retrieved.

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