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Method for processing stainless steel/carbon steel composite pipe

A processing method and technology for composite pipes, which are applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of environmental pollution, high cost, and easy wrinkles at the bend of pipes, and achieve beautiful appearance and low cost. Effect

Inactive Publication Date: 2009-01-21
俞廷标
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high cost, serious environmental pollution, and easy wrinkling of the pipe bending in the current ordinary carbon steel pipe processing technology, the technical solution adopted in the present invention is: a processing method for stainless steel carbon steel composite pipe, including Sawing to length - kerf treatment Bending process, welding process, surface treatment, the said bending process includes bending core process and mold manufacturing process

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0008] The technical scheme of the present invention is specifically described below:

[0009] Technological process: sawing to length - kerf treatment - pipe bending - welding - surface treatment.

[0010] Saw off the stainless steel carbon steel composite pipe according to the required size with a burr-free cutting machine; grind it with a grinder, or process it mechanically with a machine tool; Bending; making high-nickel welding wire for welding, which can change the molecular structure and chemical composition of carbon steel pipe to be basically the same as that of stainless steel, so as to achieve the purpose of beautiful surface and not easy to rust; use polishing machine for surface polishing.

[0011] The core threading process: calculate the applicable size of the core bead according to the outer diameter, thickness and burr of the composite pipe to be bent; calculate the connecting piece size of the core bead according to the bending angle and bending radius of the...

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Abstract

This invention discloses a method for manufacturing a stainless steel and catbon steel multiple tubes, which comprises the following steps: a) sizing and sawing off; processing the saw kerf; b) bending the pipe and welding; c) surfacing treating; wherein the bending technology comprises core wearing and die-making technology. Said invention applies the stainless steel and catbon steel multiple tubes, whose surface stainless is thin, so it can decrease the cost with no pollution; besides, the technique does not form lap in the bending place.

Description

【Technical field】 [0001] The invention relates to a processing method of a pipe material, in particular to a processing method of a stainless steel carbon steel composite pipe. 【Background technique】 [0002] Most of the pipes currently used in the field of mechanical processing are ordinary carbon steel pipes that have been treated by electroless plating. The processing technology for processing this kind of steel pipe is also relatively common: sawing to length - kerf treatment - pipe bending - welding - surface treatment. In its surface treatment process, the pipe products need to be polished-pickling-electroplating. This surface treatment process is not only cumbersome, increases manufacturing costs, but also causes great pollution to the public environment. In addition, the bending of the steel pipe is prone to wrinkles. 【Content of invention】 [0003] In order to solve the problems of high cost, serious environmental pollution, and easy wrinkling of the pipe bendin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L9/02
Inventor 俞廷标
Owner 俞廷标