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Machining method of column steel pipe

A processing method and steel pipe technology, applied in the field of mechanical processing, can solve problems such as easy formation of oxide film, cumbersome processing methods, and reduction of mechanical strength of cylindrical steel pipes, and achieve the effect of improving mechanical strength and simple method

Inactive Publication Date: 2017-10-20
合肥博之泰电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a processing method for cylindrical steel pipes, which solves the problem that the traditional processing methods for cylindrical steel pipes are cumbersome, and oxide films are easily formed on the surface of steel pipes during processing, and the formation of oxide films will greatly reduce the columnar steel pipes. The problem of mechanical strength of steel pipe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for processing a cylindrical steel pipe, the processing method comprising: heat-treating steel to obtain a castable profile M; putting the castable profile M into a pickling tank for pickling to remove the castable profile M surface Oxide film; drawing the castable profile M after pickling to obtain a fixed-diameter profile N; rolling the fixed-diameter profile N to obtain the columnar steel pipe, and electroplating the columnar steel pipe, and the electroplated layer The thickness is 2mm, wherein, the heat treatment method includes quenching treatment and high temperature tempering treatment, the temperature of quenching treatment is 500°C, the quenching time is 15min, the temperature of high temperature tempering treatment is 600°C, and the time of high temperature tempering treatment for 20min.

Embodiment 2

[0022] A method for processing a cylindrical steel pipe, the processing method comprising: heat-treating steel to obtain a castable profile M; putting the castable profile M into a pickling tank for pickling to remove the castable profile M surface Oxide film; drawing the castable profile M after pickling to obtain a fixed-diameter profile N; rolling the fixed-diameter profile N to obtain the columnar steel pipe, and electroplating the columnar steel pipe, and the electroplated layer The thickness is 5mm, wherein, the heat treatment method includes quenching treatment and high temperature tempering treatment, the temperature of quenching treatment is 600°C, the quenching time is 20min, the temperature of high temperature tempering treatment is 800°C, and the time of high temperature tempering treatment for 30min.

Embodiment 3

[0024] A method for processing a cylindrical steel pipe, the processing method comprising: heat-treating steel to obtain a castable profile M; putting the castable profile M into a pickling tank for pickling to remove the castable profile M surface Oxide film; drawing the castable profile M after pickling to obtain a fixed-diameter profile N; rolling the fixed-diameter profile N to obtain the columnar steel pipe, and electroplating the columnar steel pipe, and the electroplated layer The thickness is 3mm, wherein, the heat treatment method includes quenching treatment and high temperature tempering treatment, the temperature of quenching treatment is 550°C, the quenching time is 18min, the temperature of high temperature tempering treatment is 700°C, and the time of high temperature tempering treatment for 25min.

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Abstract

The invention discloses a machining method of a column steel pipe. The machining method comprises the steps that steel is subject to heat treatment so as to obtain a casting profile M; the casting profile M is put into a pickling bath to be subject to pickling, and an oxidation film on the surface of the casting profile M can be removed; the casting profile M subject to pickling is subject to wire drawing, and a fixed-diameter profile N is obtained; the fixed-diameter profile N is subject to grinding, and the column steel pipe is obtained. The problems that a traditional column steel pipe machining method is tedious, in the machining process, the oxidation film is easily formed on the surface of the steel pipe, and due to existence of the oxidation film, the mechanical strength of the column steel pipe is greatly reduced are solved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a method for processing cylindrical steel pipes. Background technique [0002] Cylindrical steel pipes are widely used in various machinery, equipment, vehicles, ships, railways, bridges, buildings and other fields. The traditional processing methods of cylindrical steel pipes are relatively cumbersome, and oxide films are easily formed on the surface of steel pipes during processing. The formation will greatly reduce the mechanical strength of the cylindrical steel pipe. [0003] Therefore, it is an urgent problem to be solved in the present invention to provide a processing method for columnar steel pipes that has a simple processing method and does not form an oxide film during processing to greatly improve its mechanical strength. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a processing method for cylindr...

Claims

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Application Information

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IPC IPC(8): C21D1/18C21D9/08C23G1/08B21C37/06
CPCC21D1/18B21C37/06C21D9/085C23G1/085
Inventor 王飞
Owner 合肥博之泰电子科技有限公司