Black coloring process of stainless steel precision screen mesh

Abstract

The invention discloses a black coloring process of a stainless steel precision screen mesh, and the black coloring process comprises the following step of: sequentially carrying out cleaning, activating and blackening processing on the weaved stainless steel precision screen mesh in the presence of a sealed container, wherein the blackening processing is as follows: spraying a vaporous blackening agent to a tensioning stainless steel precision screen mesh, applying voltage on the tensioning stainless steel precision screen mesh, so that the potential difference of the tensioning stainless steel precision screen mesh and the sprayed vaporous blackening agent is formed and arc discharge is generated, reacting the stainless steel wire of the stainless steel precision screen mesh with the blackening agent, and forming an ultrathin blackening layer on the surface of the stainless steel wire.The blackening layer obtained on the surface of the stainless steel precision screen mesh has the advantages of uniformity, densification and good adhesive force and cannot generate interference on the aperture of the stainless steel precision screen mesh by being extremely thin; and the black coloring process disclosed by the invention has the advantages of simplicity and fast deposition of the blackening layer, meets the requirement for environmental protection as the blackening agent does not contain the elements, such as selenium, phosphorus, chromium, and the like which pollute the environment, is nontoxic and can be directly discharged, and is lower in preparation cost.

Description

technical field [0001] The invention relates to a coloring and blackening method of stainless steel, in particular to a blackening process of a stainless steel precision wire mesh used for electromagnetic shielding. Background technique [0002] In recent years, with the wide application and rapid increase in the number of electronic and electrical equipment in various fields, electromagnetic wave pollution has become the fourth largest pollution source after air pollution, water pollution, and noise pollution, and is considered to be the "invisible killer" of human health. ". Electromagnetic wave pollution not only endangers human health, but also affects the normal operation of various electronic equipment due to the interference of electromagnetic waves. [0003] In order to isolate electromagnetic pollution and eliminate electromagnetic interference, electromagnetic shielding has become an effective measure. Electromagnetic shielding is to eliminate or suppress the int...

AI Technical Summary

Problems solved by technology

Therefore, in the process of blackening the surface of the above-mentioned wire mesh, it is easy to have the disadvantages that the holes of the wire mesh are blocked by impurities and the surface is unevenly blackened.