Manufacturing method of gas cylinder steel tube for long-tube trailer

A manufacturing method and steel pipe technology, applied in the direction of metal material coating process, etc., can solve the problems of large consumption of raw materials, low production efficiency, poor processing accuracy, etc., and achieve the effect of good quality, low cost, and reduced raw material cost

Inactive Publication Date: 2010-07-28
SICHUAN ANJI PRECISION TUBE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The processing accuracy is poor, the production efficien

Method used

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  • Manufacturing method of gas cylinder steel tube for long-tube trailer
  • Manufacturing method of gas cylinder steel tube for long-tube trailer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Embodiment: with φ 559mm * 20mm, length is: 10000mm, material is the rough tube of 4130X (material is to adopt 4130 in ASTM A519 standard), produces the gas cylinder steel pipe for long tube trailer, and finished tube specification is: φ 559mm * 16.5mm.

[0033] like figure 1 As shown, the process is as follows:

[0034] (1) First check whether the blank tube is qualified, and then chuck the qualified blank tube;

[0035] (2) Carry out pickling treatment on the blank tube. During pickling, the scale on the inner and outer surfaces of the blank tube should be completely removed. The pickling time is 25-40 minutes. If the ambient temperature is lower than 10°C, the acid solution should be heated to 18°C above;

[0036] (3) Lift the pickled steel pipe to the washing station, raise one end of the steel pipe by 300-320mm, and roll and wash the inner and outer surfaces of the steel pipe until no sewage flows out from the inner surface of the steel pipe;

[0037] (4) Treat ...

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Abstract

The invention discloses a manufacturing method of a gas cylinder steel tube for a long-tube trailer. The method comprises the following steps of: clamping the trailer head; washing with acid; washing and inspecting; phosphating; saponifying; inspecting a mould; cold drawing; phosphating once again; saponifying once again; and cold drawing once again. The method has less investment and low cost, and the product has high precision and good quality.

Description

technical field [0001] The invention relates to a method for manufacturing a gas cylinder steel pipe for a long-tube trailer, in particular to a method for manufacturing a gas cylinder steel pipe for a long-tube trailer by precision cold drawing. Background technique [0002] With the popularization of the use of natural gas, hydrogen and various special high-pressure gases in my country, high-pressure gas transport semi-trailers (hereinafter referred to as long-tube trailers) have played an increasingly important role in the transportation of various gases. Long-tube trailers are widely used in the country. The number of vehicles has also increased rapidly, reaching nearly 2,000 in 2008. In addition to the strength and other mechanical properties of the gas cylinder steel pipes for long-tube trailers, it is also necessary to control the weight of each gas cylinder steel pipe, so that the long-tube trailer gas cylinders can accommodate more natural gas with lighter weight. T...

Claims

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Application Information

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IPC IPC(8): B21C1/22C23G1/02C23C22/05
Inventor 任启益吴增余
Owner SICHUAN ANJI PRECISION TUBE MFG
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