How to solve the surface roughness in the thin-walled stainless steel capillary tube?

1. Grinding and polishing, (mechanical equipment grinding, fluid mechanics grinding)

The manufacturer of 304 stainless steel capillary introduces grinding and polishing in detail. The grinding and polishing machine is equipped with a polishing wheel. When polishing, the polishing wheel is notified to rotate, and the surface layer of the seamless steel pipe and the polishing wheel are disgusted by the high temperature that causes the plastic deformation of the pipe surface to develop. Under the actual effect of the polishing force, the surface of the PCB undergoes plastic deformation, and the protrusions are pressed very low and dented. Themed activities reduce the roughness.

The other is that the composition of the polished pipe and the surrounding materials during the polishing process exothermic reaction with the polished metal material during the whole polishing process, which greatly improves the actual polishing effect.

Sanding can also be divided into three types: coarse sand, fine sand and bright sand. Coarse sand applies 180#--320# thousand impeller to the actual surface effect of the pipe surface after processing. The fine sand is the actual effect of the surface layer of the pipe surface after the 320#--600# thousand impeller is used. The mirror light is polished with a thousand impeller wheel, hemp wheel, and cloth wheel, so that the tube surface can get the actual effect of mirror glass brightness.

The benefits of this type of polishing method are that the equipment is very simple, easy to operate, and does not require organic chemical neutralizers. The disadvantage is that the seamless splicing tube cannot be polished internally, and it is very prone to scratches due to improper handling, which is time-consuming and time-consuming. .

Fluid mechanics grinding, fluid mechanics grinding is to use the liquid of the high speed theme activity and the abrasive sand particles carried by it to erode the surface of the stainless steel square tube to reach the polishing destination.

Common methods are: wear-resistant material spouting production and processing, liquid spouting production and processing, fluid power grinding, etc. Fluid power milling is driven by a hydraulic machine to make the liquid material with abrasive particles reciprocate through the surface of the seamless steel pipe at a high speed.　　The material is mainly made of unique chemical substances (high polymer-like substances) that are highly stale at lower working pressures and mixed with wear-resistant materials. The wear-resistant materials can be made of silicon carbide powder. The benefits of this type of polishing method are higher brightness and the ability to polish the stainless steel square tube internally. The disadvantage is that the other square tube is required to spurt one by one, and the work efficiency is low.

2. Chemical polishing, (chemical polishing ep, organic chemical grinding cp)

Chemical polishing EP is an anodic oxidation and etching of metal material parts under specific conditions. This whole process can improve the external economic geometry shape of stainless steel passivation, reduce the level of microscope matteness of stainless steel passivation, and then reach the goal of brightening the surface of the part. Organic chemical milling CP is the organic chemical corrosion of metal material parts under specific conditions. In the whole process of corrosion, the passivation of stainless steel is corroded and smoothed by the aqueous solution, and then a brighter surface layer is obtained. The roughness is generally several tens of microns.

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