How to make a stainless steel electric box with a beautiful surface？
No.1
Use 304L stainless steel material. This material has the same performance as 304 stainless steel in all aspects. SUS 304 has excellent performance in all aspects. 304 stainless steel is suitable for a wide range of applications in various places. Compared with 304L, its anti-intergranular corrosion effect is better. It can solve the problem of welding rust effectively.
No.2
Before welding, clean the oil and dirt on the welding position. Do passivation treatment before welding.
No.3
Use 316L welding wire when welding. This type of welding wire is a low-carbon material with better corrosion resistance.
No.4
When fully welding, use low current welding as much as possible to prevent the precipitation of high temperature carbides. For material thickness between 1.0-2.0mm, the current is controlled within 45~75A.
No.5
When welding, no pores are allowed in the slag; no joints are allowed in full welding.
No.6
To prevent free iron from adsorbing on the surface of the product during grinding, another grinding site (separate from the iron grinding place) is required. Use new grinding/polishing wheels or special grinding/polishing wheels for stainless steel products to grind/polish the product.
No.7
Welding stains (burn color) at each location must be removed. The internal place that cannot be polished can be wiped off with solder spot cleaning paste/cleaning fluid.
No.8
After grinding the welding slag, it must be rough-polished and then fine-polished. No obvious sand holes, deep scratches, sanding marks and other rough surfaces are allowed. It is best to polish bright colors before graining, which can play a good role in the appearance of the cabinet after wire drawing.
No.9
Wire drawing adopts 120# filament nylon wheel. Perform shallow wire drawing according to the vertical direction of the cabinet.
Shallow wire drawing covers shallow scratches and has obvious visual effects. There will be no obvious hand feeling when touched, reduce the surface roughness and the probability of surface dullness and corrosion.
Longitudinal wire drawing can reduce the adhesion of dust and dirt on the surface of the product. It can keep the bright color before drawing.
No.10
Clean the dust and dirt on the surface of the product.
No.11
The outer surface of the product is coated with a film, which can enhance the surface color and protect it.
Welcome to share the experience of sheet metal fabrication with us. And any inquiry of metal fabrication or customized sheet metal products just send into sales1@shhofen.com we will help you.
Post time: Dec-04-2020