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Build-up composite flange and manufacturing method thereof

A technology of composite flange and manufacturing method, which is applied in the direction of flange connection, pipe/pipe joint/pipe fitting, passing components, etc., to achieve good adhesion and good welding performance

Inactive Publication Date: 2008-07-30
张积聚
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003]The purpose of the present invention is to address the defects of the existing veneer flanges, and to provide a manufacturing cost between the single use of 201 type stainless steel or the single use of 304 type stainless steel. Overlay welding composite flange with better overall performance and its manufacturing method

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  • Build-up composite flange and manufacturing method thereof

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Embodiment Construction

[0012] As shown in the figure, the main body of the surfacing composite flange is composed of 201 type stainless steel, and the sealing surface of the flange is composed of 304 type stainless steel, and the two parts are connected together by surfacing welding process. The manufacturing process of the surfacing composite flange is as follows:

[0013] (1) Use 201-type stainless steel to process flange blanks by turning process, leave a margin of 1-2mm for the thickness on the basis of the standard quantity, and leave a margin of 1mm for the outer circle and inner diameter on the basis of the standard quantity, two face chamfering;

[0014] (2) On the sealing surface of the flange, a layer of 304 stainless steel is directly welded with welding wire and electrode through the surfacing process to form the flange sealing surface, and then, through penetration testing to find out whether there is a surfacing problem in the product; the welded 304 stainless steel The thickness is d...

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Abstract

The invention relates to the technical field of the manufacturing technique of flanges, especially relates to a resurfacing composite flange and the manufacturing method, and the main body of the flange is composed of a 201 type stainless steel. A sealing surface of the flange is composed of a 304 type stainless steel, and two parts are connected together through the resurfacing technology. The invention overcomes the problems of high cost and high price of the product only adopted the 304 type stainless steel, dear price and poor acid resistance of the product only adopted the 201 type stainless steel., and the welding property of the 201 and the 304 materials is good. Through resurfacing penetration, the product can embody the advantages of uneasy infiltration and good adhesion, and the flange which contacts with media and the flange which only adopts the 304 type stainless steel have the same acid resistance and antirust ability.

Description

technical field [0001] The invention relates to the technical field of flange processing and manufacturing, in particular to a surfacing welding composite flange and a manufacturing method thereof. Background technique [0002] At present, most of the flanges on the market are made of 304 stainless steel through manual lathe processing. Due to the continuous development and waste of existing resources, the price of 304 stainless steel continues to rise, which makes the production cost of flanges continue to increase. . Since the existing veneer flanges are made of carbon steel (Q235, 20#) or 16Mn pasted with 304 (316L), the flanges processed by this process have defects such as easy leakage and poor adhesion. . Contents of the invention [0003] The purpose of the present invention is to address the defects of the existing veneer flanges, to provide a surfacing welding composite flange with better overall performance and its manufacturing cost between the single use of 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L23/032F16L23/16
Inventor 张积聚
Owner 张积聚
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