Manufacturing method of cold drawn cylinder pipe for industrial gas cylinder

A manufacturing method and technology of gas cylinder tubes, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the undiscovered problems of manufacturing gas cylinders, etc., and achieve light weight, broad market prospects, and pressure-bearing big effect

Inactive Publication Date: 2010-12-29
天津润德中天钢管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Through searching, we have not yet found a method for manufacturing natural gas cylinders by the thermal expansion method

Method used

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  • Manufacturing method of cold drawn cylinder pipe for industrial gas cylinder
  • Manufacturing method of cold drawn cylinder pipe for industrial gas cylinder
  • Manufacturing method of cold drawn cylinder pipe for industrial gas cylinder

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with specific examples, and the following examples are only descriptive, not limiting, and cannot limit the protection scope of the present invention with this.

[0016] A method for manufacturing cold-drawn gas cylinder tubes for industrial gas cylinders, which adopts hot-rolled raw material tubes made of 30CrMo and Φ194×5.5 mm, and is drawn one by one to the finished product specification of Φ189×4.8 mm after pickling and lubrication. The finished steel pipes are inspected for geometric dimensions and performance according to national standards and technical agreement requirements.

[0017] The specific steps are:

[0018] (1) Raw material tube inspection: hot-rolled raw material tube with material 30CrMo, Φ194×5.5mm;

[0019] (2) Pickling and lubrication of steel pipes:

[0020] Pickling: pickling with hydrochloric acid, the concentration of hydrochloric acid is 28-30%, the temperature i...

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Abstract

The invention relates to a manufacturing method of a cold drawn cylinder pipe for an industrial gas cylinder. A phi 194*5.5mm hot-rolled raw material tube of which the material is 30CrMo is washed with an acid, lubricated and drawn to a finished product of which the specification is phi 198*4.8mm at one time. In the method, the 30CrMo hot-rolled tube serves as the raw material tube. The industrial gas cylinder manufactured by cold drawing and a method of shrinking opening and bottom has the advantages of light unit weight, relatively large capacity, good comprehensive performance of the steel tube, safety and reliability. In the chemical components of the industrial gas cylinder manufactured by the method, the content of S, the content of P and the content of residual elements (Ni and Cu) are far less than the national standards, which is very favorable for guaranteeing the comprehensive performance of the gas cylinder significantly.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to industrial gas cylinders, in particular to a method for manufacturing cold-drawn gas cylinder tubes for industrial gas cylinders. Background technique [0002] The traditional manufacturing method of industrial gas cylinders is to use steel billets to stamp and then draw them into bottles. The industrial gas cylinders produced by this method have rough surface, heavy unit weight and small volume-to-weight ratio. [0003] By retrieval, the method for making the natural gas bottle by the thermal expansion method has not been found yet. Contents of the invention [0004] The object of the present invention is to overcome the deficiencies of the prior art, and provide a method for manufacturing cold-drawn gas cylinder tubes for industrial gas cylinders with light unit weight, high volume-to-weight ratio and good comprehensive performance. [0005] The purpose of the present invent...

Claims

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Application Information

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IPC IPC(8): B21C37/06B21C1/22C23G1/08C23C8/42
Inventor 毕金宝王俊广张勇刘志才
Owner 天津润德中天钢管有限公司
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