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Surface treatment method for stainless steel pipe

A surface treatment, stainless steel technology, applied in the direction of pipes/pipe joints/fittings, pipes, rigid pipes, etc., can solve problems such as high cost, failure to meet quality requirements, and inability to achieve, achieve higher grades, improve surface aesthetics and The effect of corrosion resistance

Inactive Publication Date: 2007-05-23
张明亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process has the advantages of simplicity and convenience, no damage to the base material, and no influence on the strength, but it cannot meet the requirements for occasions with high requirements for surface appearance and corrosion resistance.
The second method is to use electrolytic polishing, which can improve some surface quality and corrosion resistance, but the processing is troublesome, the cost is high, and it cannot meet the high quality requirements. This method cannot be used for large pipe fittings.

Method used

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Embodiment Construction

[0008] The present invention will be further described below in conjunction with embodiment.

[0009] For water supply equipment, chemical equipment, etc., there is generally a certain pressure during work. The stainless steel pipes used are generally SUS304 and SUS316, and the wall thickness is generally 3mm to 10mm. They are hot-rolled seamless pipes with poor surface quality, and It is very easy to damage the surface during loading, unloading and transportation. The first process of the present invention is mechanical polishing pretreatment. Basic, when polishing, generally use 60-mesh, 80-mesh, 120-mesh, 240-mesh, 360-mesh, 600-mesh abrasive cloth or abrasive belt for polishing. To achieve a uniform and consistent effect, the discolored weld is treated to the same color as the surface of the base metal. The material of the projectile used is preferably the same as that of the base material. The diameter of the projectile is controlled between 0.3mm and 1.0mm. After the sho...

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Abstract

The surface treatment for stainless steel tube adopts mechanical polishing and grinding pretreatment to make the original surface even and smooth, with shot-blast to make the treatment surface taking on sub light, through drying and high temperature waxing to make the surface more erosion resistant. It is advanced in performance, with good effect.

Description

technical field [0001] The invention relates to a method for treating the surface of stainless steel pipe fittings, which belongs to the field of manufacturing stainless steel products. Background technique [0002] In water supply equipment, pharmaceutical machinery, food machinery, and chemical machinery, stainless steel pipes are often used for various connections. Such pipes are generally blanked with blank pipes in the manufacturing process, and then welded to make pipe fittings. The surface quality and aesthetics of pipe fittings are poor, and the weld seam is easy to oxidize and discolor. At present, there are two main methods for pipe surface treatment. Rinse with clean water, dry and pack to be the finished product. This process has the advantages of simplicity and convenience, no damage to the base material, and no impact on strength, but it cannot meet the requirements for occasions with high requirements for surface appearance and corrosion resistance. The seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/02B24C11/00C23C8/80
Inventor 张明亮王学成徐海坤
Owner 张明亮
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