Copper-nickel-iron loose inner flange and preparation thereof

An inner flange, copper-nickel technology, applied in the field of copper-nickel-iron loose inner flange and its preparation, can solve the problems of difficult to achieve flange air tightness, safety accidents, gas or liquid leakage, etc.

Inactive Publication Date: 2013-06-19
上海世航铜镍管件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The connection of two delivery pipes over a long distance generally uses flange connection pipe fittings to connect the two delivery pipes into one body. Since the airtightness of the flanges made by the casting method is difficult to achieve, air leakage and leakage are easy to occur during the long-term sealing process. Liquid, especially when toxic and harmful gas or liquid runs in the piping system, causing gas or liquid leakage, which is extremely harmful and easily transformed into a safety accident

Method used

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  • Copper-nickel-iron loose inner flange and preparation thereof

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Embodiment Construction

[0006] Below in conjunction with accompanying drawing, take the loose sleeve inner flange of the D400mm of copper-nickel-iron alloy as an example, the present invention will be further described:

[0007] See attached figure 1 , using copper-nickel-iron alloy, the bottom is a flange ring 1, and the upper opening is a thin-walled opening 2 with an inner hole 3 in the middle.

[0008] See attached figure 1 , when casting, use copper-nickel-iron alloy to add refractory nickel to the bottom, add copper, add old materials and covering agent to melt, take samples and analyze, adjust the content of metal elements to meet the composition requirements of copper-nickel alloy, and carry out deoxidation refining , when the furnace temperature rises to the range of 1350-1450°C, remove the slag, add Cu-Mg alloy for deoxidation, and remove oxygen in the copper liquid; the molten liquid is poured into the mold separately, and the bottom is cast as a flange ring 1, catch It is a blank with a...

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Abstract

The invention provides a copper-nickel-iron loose inner flange and preparation thereof. The preparation is characterized by being composed of shove charging, smelting, sampling, analyzing, deoxidizing, refining, casting, drawing, and finish machining. Compared with the prior art, the copper-nickel-iron loose inner flange is completely adapted to the pipeline connection on the condition of high pressure or high temperature. Meanwhile, the drawing process is utilized, mechanical performance of the copper-nickel-iron loose inner flange is improved, non-cutting or little cutting is achieved, alloy material and resources are saved, and production cost is lowered. The copper-nickel-iron loose inner flange has the advantages of being good in gas tightness, and pipeline connection is safe.

Description

technical field [0001] The invention relates to a copper-nickel-iron loose sleeve inner flange and its preparation, and relates to the technical field of design and manufacture of pipe connection pipe fittings, in particular to the copper-nickel-iron pipe connection pipe fittings. Background technique [0002] At present, in the process of transporting liquid or gas, the method of pipeline transportation is generally adopted, which is convenient and safe, but in the process of pipeline installation, it is necessary to use pipeline connection fittings to connect the delivery pipes into one body to form a delivery pipeline. Due to the occasion and pressure requirements of use, its connection methods include welding, flange connection, thread connection, etc. The connection of two delivery pipes over a long distance generally uses flange connection pipe fittings to connect the two delivery pipes into one body. Since the airtightness of the flanges made by the casting method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L23/00C22C1/02C22C9/06C22F1/08
Inventor 杨建忠
Owner 上海世航铜镍管件有限公司
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