What is the plating process? What are the criteria for judging the quality of electroplating?
Gmail:alisa@jmyunti.com
Generally, it includes three stages: pre-treatment before electroplating, electroplating and post-treatment.
Complete process:
1. Acid immersion → full-board electroplating
Copper → pattern transfer → acid degreasing → secondary countercurrent rinsing → micro-etching → secondary → acid immersion → tin plating → secondary countercurrent rinsing.
2. Countercurrent rinsing → acid immersion → pattern electroplating copper → secondary countercurrent rinsing → nickel plating → secondary water washing → citric acid immersion → gold plating → recycling → 2-3 level pure water washing → drying.
Plastic shell electroplating process:
Chemical degreasing.--Water washing---Acetone immersion---Water washing---Chemical roughening water washing sensitization--Water washing--Activation--Reduction--Chemical copper plating--Water washing Bright sulfate copper plating--Water washing--Bright sulfate nickel plating--Water washing--Bright chrome plating--Water washing and drying for inspection.
Working principle:
Electroplating requires a low-voltage, high-current power supply to supply power to the electroplating tank, and an electrolytic device consisting of a plating solution, a part to be plated (cathode) and an anode. The composition of the plating solution varies depending on the plating layer, but all contain a main salt that provides metal ions, a complexing agent that can complex the metal ions in the main salt to form a complex, and a buffer for stabilizing the pH of the solution.
Anode activator and special additives. The electroplating process is a process in which the metal ions in the plating solution are reduced to metal atoms through electrode reactions under the action of an external electric field, and metal is deposited on the cathode. Therefore, this is a metal electrodeposition process that includes steps such as liquid phase mass transfer, electrochemical reaction and electrocrystallization.
In the plating tank containing the plating solution, the cleaned and specially pretreated part to be plated is used as the cathode, and the plated metal is used to make the anode, and the two poles are connected to the positive and negative poles of the DC power supply respectively. The plating solution is composed of an aqueous solution containing a compound of the plated metal, conductive salts, buffers, pH regulators and additives.
Company: Baoji Dynamic Trading Co., Ltd
Country:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
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Gmail:alisa@jmyunti.com
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