Production process of low-stress electroforming printing nickel screen

Abstract

The invention relates to a production process of a low-stress printing nickel screen, which comprises the following steps of: (a) making a nickel screen die; (b) primarily coating the nickel screen; and (c) secondarily coating the nickel screen. The production process of the low-stress printing nickel screen is characterized in that a hard chromium layer is coated outside a bottom nickel layer of the die, electrolytes for coating nickel in the preparation of the die and the nickel screen are both nickel aminosulfonate with the concentration of 480-580 g / l and the working temperature of 43-47 DEG C, and vaseline with the concentration of 20 percent is adopted as a passivant for passivating the die. The nickel amino-sulfonate, instead of a traditional nickel sulfate, is used as the nickel-coating electrolyte, and the obtained nickel screen has low electric nickel layer stress and good toughness, elasticity and recovery. The original nickel sulfate electrolyte works at a temperature of 70 DEG C, but the nickel amino-sulfonate works at a temperature of 43-47 DEG C and saves electricity. Due to the hard chromium layer coated on the die, the wearing resistance of the die and the opening evenness of the nickel screen are improved. The die is passivated by the vaseline with the concentration of 20 percent so as to lessen the pollution and prolong the service life of the die.

Description

Production process of low stress electroformed printing nickel screen technical field The invention relates to a production process of a printed nickel screen, in particular to a production process of a low-stress electroformed printed nickel screen. Background technique The toughness and brittleness of the nickel mesh will affect the contact between the nickel mesh and the fabric, and directly affect the quality of the printing effect. The traditional nickel sulfate solution is used as the electrolyte for the nickel plating of the existing nickel mesh. The nickel mesh obtained by electroplating with this electrolyte has poor toughness and brittleness, which not only affects the printing effect, but also has a short storage period for the roundness of the nickel mesh. . Contents of the invention The invention provides a low-stress printed nickel mesh production process, aiming at solving the problems in the prior art and providing a printed nickel mesh production proce...

AI Technical Summary

Problems solved by technology

The traditional nickel sulfate solution is used as the electrolyte for the nickel plating of the existing nickel mesh. The nickel mesh obtained by electroplating with this electrolyte has poor toughness and brittleness, which not only affects the printing effect, but also has a short storage period for the roundness of the nickel mesh.