Manufacturing method of toothed seal plate

Abstract

The invention relates to a novel tooth-like sealing plate manufacture technology. Key dimensions including tooth-like sealing plates, tooth-like lines, tooth root depth, bent lines and the like all have big deviations, so that an assembling gap between the sealing plate and a tube panel is overlarge, since the production process of the tooth-like sealing plate is in cold working processing and the manufacture precision of cold working is low, forming is poor, and the factors cause the problem that two ends are jacked and tooth spaces are overlarge during assembling so as to be difficult in realizing seal welding. The novel tooth-like sealing plate manufacture technology utilizes computer software to carry out three-dimensional entity authentication analysis, draws the assembling position relationship of the sealing plate and the tube panel, determines the key dimensions of the tooth-like lines, the tooth root depth and the bent lines, utilizes the computer software to carry out three-dimensional entity authentication analysis through theoretical calculation, givens the key dimensions of the tooth-like lines, the tooth root depth and the bent lines of 10 tooth-like sealing plates again, and formulates a new technology by a new tool. The invention is used for the novel tooth-like sealing plate manufacture technology.

Description

Technical field: [0001] The invention relates to a manufacturing method of a toothed sealing plate. Background technique: [0002] The currently used toothed sealing plates have large deviations in key dimensions such as the tooth profile, tooth root depth, and bending line, resulting in an excessively large assembly gap between the sealing plate and the tube panel. The production process of the toothed sealing plate is cold working. Due to The manufacturing accuracy of cold work is low, resulting in poor forming. These factors will lead to the problem of jacking up at both ends or excessive tooth spacing during assembly, making it difficult to achieve sealing welding. In boiler heating surface components, the toothed sealing plate plays the role of sealing and fixing and supporting the tube panel tube, which belongs to the force-bearing part. The manufacturing quality and molding quality of the sealing plate directly affect the assembly, welding quality and surface quality ...

AI Technical Summary

Problems solved by technology

[0003] There are problems in the design. The general tooth shape of the original tooth type sealing plate has been used for many years. The earliest standard was in 1983. There are large deviations in the key dimensions such as the tooth profile line, tooth root depth and bending line, which lead to the sealing plate and the tube panel. The assembly gap is too large, because the two ends of the sealing plate must be pressed and bent, the generally designed bending radius R is slightly larger than the pipe radius, and there is no gap between the sealing plate and the pipe during actual assembly, that is, the bending radius R should be equal to the pipe radius, if Leaving a margin will cause the forming size of the bending part at both ends of the sealing plate to be out of tolerance;

[0004] There are problems in the process. The sealing plate adopts the process of shearing and blanking. The shearing and blanking will produce a large deviation, and the deviation is within a reasonable range, that is, it meets the relevant provisions of the national standard GB / T1804-2000. The deviation In the end, the molding size of the sealing plate will be out of tolerance, and there will be problems of jacking up at both ends or excessive tooth spacing during assembly, making it difficult to achieve sealing welding

[0005] There are problems in production. The production process of the sealing plate includes multiple processes such as shearing and blanking, edge folding, tooth punching, gas cutting, and pressing. Forming deviation, etc., if the deviation of each process is not strictly controlled during production, the size will be out of tolerance, which will eventually lead to the out of tolerance of the sealing plate forming size, the gap is too large or the top is dead during assembly, and it is difficult to achieve welding;

[0006] The above-mentioned problems will lead to out-of-tolerance molding dimensions. During assembly, there will be problems of jacking up at both ends or excessive tooth spacing, making it difficult to achieve sealing welding. The general measures are temporary treatment, additional correction, or repair, which is labor-intensive and time-consuming.

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