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Manufacturing method with curvature thin wall stainless steel pipe fittings

A technology of bending parts and manufacturing methods, applied in the direction of pipe components, non-detachable pipe connections, pipes/pipe joints/pipe fittings, etc., can solve the problems of high machining cost and heavy product weight, and achieve low product cost and beautiful appearance , Guarantee the effect of welding quality

Inactive Publication Date: 2008-04-09
阎金波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the elbow and bridge manufactured by this method solve the problem of large product size, the product is heavy and the cost of machining is relatively high

Method used

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  • Manufacturing method with curvature thin wall stainless steel pipe fittings

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Embodiment Construction

[0013] The socket part (1) adopts a thin-walled stainless steel pipe as a raw material, and is manufactured by pressure processing techniques such as expansion and compression forming. The curved part (2) is manufactured by a stainless steel precision casting process. Then, the socket parts (1) at both ends and the bent part (2) in the middle are welded into one body by a full-automatic argon arc welding machine. Since it is difficult to precision cast the curved part of the bridge as a whole, it is divided into two sections from the middle for precision casting, and then assembled and welded into one.

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Abstract

The present invention relates to a manufacturing method for a thin-walled stainless steel pipe fitting with a bending part, and is used for the production of the thin-walled stainless steel pipe fittings such as elbows and overhead pieces, etc. The pipe fitting is divided into a socket part (1) of two ends connected with a tube and a central bending part (2). The socket part (1) is produced by adopting the pressure-expansion forming of the thin-walled stainless steel pipe fitting. The bending part (2) is produced by adopting precision casting technique of stainless steel. The socket part (1) and the bending part (2) are combined and welded into a whole by welding, thereby reducing the dimensions of the pipe fittings and having low cost and beautiful appearance.

Description

(1) Technical field: [0001] The invention relates to a manufacturing method of a thin-wall stainless steel pipe fitting with a curved part, which is used for manufacturing thin-wall stainless steel pipe connectors. (two) background technology: [0002] Thin-wall stainless steel pipes have become a hot spot in the development of domestic water supply pipes. At present, there are two manufacturing methods for pipe fittings with curved parts such as elbows and bridges: [0003] 1. Pressure processing method [0004] The thin-walled stainless steel pipe is used as raw material and manufactured by bending and expansion process. In order to ensure that the thin-walled stainless steel tube does not wrinkle when it is bent, a large bending radius of curvature is required. The elbows and bridges produced in this way are very large in size and have an unattractive appearance. [0005] 2. Precision casting method [0006] The blank is manufactured by stainless steel precision cast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L43/00F16L13/02
Inventor 阎金波张正东谭承信
Owner 阎金波
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