Testing methods for stainless steel screws?

Stainless steel screws usually refer to steel screws with resistance to corrosion of air, water, acid, alkali, salt or other media.

Stainless steel screws are generally not easy to rust, durable, can be used in environmental protection equipment, medical equipment, communication equipment and other fields.

Mainly used for:

Environmental protection equipment, medical equipment, communication equipment, power facilities, electronic products, instruments and meters, food machinery,

petrochemical industry, ship assembly, pump valve pipeline, building curtain wall, outdoor occasions, sports facilities, outdoor decoration, etc.

Stainless steel screws usually refer to steel screws with resistance to corrosion of air, water, acid, alkali, salt or other media.

Stainless steel screws generally not easy to rust, durable, can be used in environmental protection equipment, communication equipment and other fields.

It is very important for the buyer to check the quality of the product.

How to test stainless steel screws?

1, measuring method: the amount of micrometer, vernier caliper, plug gauge, etc.;

2,,Magnetic method: magnetic method to measure the thickness of the coating layer, is a non-destructive measurement of the non-magnetic coating layer on the magnetic matrix with a magnetic thickness gauge;

3,Microscope method: the etched stainless steel screw fasteners are magnified on a metallographic microscope with micrometer eyepiece to measure the thickness of the coating on the section;

4, timing flow method: can make the solution to dissolve the coating on the local surface of the stainless steel screw coating, according to the local coating to dissolve the time required to calculate the thickness of the coating.