Plastic cold extruding processing method of copper alloy seamless pipe fittings for ships

A processing method and copper alloy technology, applied in the field of ship design and manufacturing, can solve problems such as many hidden dangers of control pipe fittings, fire or explosion, endangering life and property safety, etc.

Inactive Publication Date: 2010-11-03
上海华建管件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the large-scale ship control pipe fittings produced in the market are all formed by processing a part of the seamed pipe, and then the related parts are formed by welding. After a period of time, air leakage and liquid leakage occur from time to time. If toxic and harmful liquid or gas is involved, it is easy to cause fire or explosion, directly endangering the safety of life and property

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0004] The following uses the copper alloy seamless elbow pipe fitting of DN500mm as an example to further describe the present invention:

[0005] Use DN500mm copper alloy seamless pipe, cut the material according to the slope of 39° at both ends, after the length of the material is 1300mm, raise the temperature to 680°C in the annealing furnace, keep it for 30 minutes, put it in the air to cool naturally, and send the annealed blank to Put it into the cavity of the molding model fixed on a 2000-ton hydraulic press, use the mandrel to withstand the copper alloy seamless pipe, push it into the cavity of the forming mold at a rate of 100mm / time, and at the same time, withdraw the mandrel to a position 500mm away, the core Put between the shaft and the copper alloy seamless pipe The steel ball is shaped step by step, and each time it is pressed into the inner diameter of the copper alloy seamless pipe by 100mm / time, and pushed repeatedly until the elbow is formed.

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Abstract

The invention discloses a plastic cold extruding processing method of copper alloy seamless pipe fittings for ships. The processing method is characterized by comprising the processes of blanking by the blank length with two ends with inclination of 10-39 degrees, annealing treatment, pressing for molding, reshaping and surface short blasting treatment, wherein the annealing temperature is within the range from 550-700 DEG C. The method can overcome the defects of traditional pipe fittings for ships; since seamless pipe molding and plastic cold extruding processing methods are adopted, the produced seamless pipe fittings has the advantages of attractive appearance, high accuracy, raw material saving, low production cost, no hidden danger and high safety factor and can directly protect the safety of life and property.

Description

1. Technical field: [0001] The invention discloses a plastic cold extrusion processing method for marine copper alloy seamless pipe fittings, relates to the technical field of ship design and manufacture, and is applied to the connection of marine pipelines. 2. Background technology: [0002] At present, the large-scale ship control pipe fittings produced in the market are all formed by processing a part of the seamed pipe, and then the related parts are formed by welding. After a period of time, air leakage and liquid leakage occur from time to time. If toxic and harmful liquid or gas is involved, it is easy to cause fire or explosion, directly endangering the safety of life and property. 3. Contents of the invention: [0003] The object of the present invention is to overcome the above-mentioned defects, improve the pipe fittings with seams, and adopt the plastic cold extrusion processing method to form the marine copper alloy seamless pipe fittings plastic cold extrusio...

Claims

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Application Information

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IPC IPC(8): B21C23/08
Inventor 蔡建斌李松祥沈龙明
Owner 上海华建管件有限公司
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