Pre-polishing-grinding method before shot blasting of steel pipe

A treatment method and steel pipe technology, which is applied in the direction of grinding machines, abrasive belt grinders, grinding/polishing equipment, etc., can solve the problems of affecting the surface effect of shot blasting, low polishing efficiency, rough surface polishing, etc., and achieve improved pre-polishing Efficiency, improve surface finish, ensure the effect of shot blasting effect

Inactive Publication Date: 2017-05-10
QINGDAO BOLIER MACHINERY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing surface treatment of steel pipes mainly uses relatively rough flap wheels or manual louvers for surface polishing. Not only the polishing efficiency is low, but the surface polishing is rough, which affects the surface effect of later shot blasting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] The present invention includes rough polishing and fine polishing of steel pipes:

[0007] a) Material preparation: a steel pipe with a length of 4 meters,

[0008] One 80-mesh abrasive belt, one 240-mesh abrasive belt,

[0009] 1 pipeline polishing machine and supporting dust removal equipment;

[0010] b) Coarse polishing: Use a pipeline polishing machine to install an 80-mesh abrasive belt first, and the abrasive belt and the steel pipe rotate clockwise at the same time, adjust the steel pipe speed to 30r / min, and the abrasive belt moves along the steel pipe surface at a polishing speed of 15cm / min. Roughly polish the surface once to remove surface oxide scales, etc., so that the surface presents a metallic luster;

[0011] c) Fine polishing: replace the 240-mesh fine abrasive belt, adjust the steel pipe speed to 40r / min, the abrasive belt moves along the steel pipe surface at a polishing speed of 10cm / min, and perform fine polishing on the steel pipe surface twice...

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Abstract

The invention provides a pre-polishing-grinding method before shot blasting of a steel pipe. The pre-polishing-grinding method before shot blasting of the steel pipe consists of rough polishing-grinding and fine polishing-grinding; a pipeline polishing-grinding machine is used and equipped with an 80-mesh abrasive band, the abrasive band and the steel pipe simultaneously rotate clockwise, the rotation speed of the steel pipe is adjusted to be 30r/min, the polishing-grinding and moving speed of the abrasive band along the surface of the steel pipe is 15cm/min, rough polishing-grinding is carried out on the surface of the steel pipe once to remove the oxide scale on the surface, and therefore the surface has metallic luster; and the 80-mesh abrasive band is replaced by a 240-mesh fine abrasive band, the rotation speed of the steel pipe is adjusted to be 40r/min, the polishing-grinding and moving speed of the abrasive band along the surface of the steel pipe is 10cm/min, fine polishing-grinding is carried out on the surface of the steel pipe twice, and therefore the surface of the steel pipe is smooth, the pre-polishing-grinding efficiency of the steel pipe is effectively improved, the smoothness of the surface of the pipe is improved and the later shot blasting effect is ensured.

Description

technical field [0001] The invention is used for pre-polishing treatment on the surface of steel pipes before shot blasting, and belongs to the technical field of mechanical polishing. Background technique [0002] The existing surface treatment of steel pipes is mainly carried out by relatively rough flap wheels or manual louvers for surface polishing. Not only is the polishing efficiency low, but the surface polishing is rough, which affects the surface effect of later shot blasting. Contents of the invention [0003] The object of the present invention is to provide a steel pipe pre-polishing treatment method with high polishing efficiency and good surface quality. [0004] The present invention provides a pre-polishing treatment method for steel pipes before shot blasting, which is composed of rough polishing and fine polishing. Use a pipeline polishing machine to first install an 80-mesh abrasive belt, and the abrasive belt and the steel pipe rotate clockwise at the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B27/033B24B21/02
CPCB24B27/033B24B21/02
Inventor 张明亮王秀玲周海涛
Owner QINGDAO BOLIER MACHINERY EQUIP
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