Automatic electroplating solution feeding system and automatic electroplating solution feeding method

Abstract

The invention discloses an automatic electroplating solution feeding system, comprising an electroplating tank, wherein a pH probe is arranged in the electroplating tank outside which a PLC (Programmable Logic Controller) is arranged; the PLC is connected with an ampere hour meter and a pH value sensor; and the PLC is connected with a timer which is connected with a metering pump, the metering pump is connected with a feeding box and the electroplating tank, and the feeding box comprises an electroplating solution regulator feeding box, a metal salt solution box and a pH value regulator feeding box. The automatic electroplating solution feeding method comprises the steps that the automatic feeding system is assembled according to the connection structure; the PLC is started; the PLC receives metering signals of the ampere hour meter and / or detection signals of the pH probe and controls the metering pump to start working and feed the chemical in the feeding box into the electroplating tank according to the preset threshold output control, and the feeding box stops feeding when the timer arrives at the set time and / or the detection signal sent out by the pH probe is smaller than the threshold. The system guarantees stable electroplating quality.

Description

technical field [0001] The invention relates to an electroplating liquid dosing control system and a control method, in particular to an electroplating liquid automatic dosing system and an automatic dosing method thereof. Background technique [0002] The existing electroplating additives are added manually, and there are disadvantages such as heavy workload, inaccurate control of dosing, and loss of control of the liquid medicine by artificial dosing to control water quality. Additives are substances in a very small amount in the electroplating solution, but they can greatly change the properties of the coating such as appearance quality, physical quality, etc., and artificially often add too much or not enough, or the time interval between additions is too long. Insufficient addition of additives will cause the quality of the coating to fail to meet the requirements. For example, insufficient brightener will cause insufficient brightness, and insufficient additives will c...

AI Technical Summary

Problems solved by technology

[0002] The existing electroplating additives are all manually added, and there are disadvantages such as heavy workload, inaccurate dosing control, and loss of control of the liquid medicine by artificial dosing to control water quality.

Additive is a very small amount of substance in the electroplating solution, but it can greatly change the properties of the coating such as appearance quality, physical quality, etc., and artificial often add too much or not enough, or the time interval of adding is too long

Insufficient addition of additives will cause the quality of the coating to fail to meet the requirements. For example, insufficient brightener will cause insufficient brightness, and insufficient additives will cause foaming, etc.; excessive addition of additives will easily cause the quality of the coating to decline. Poor bonding between the silver coating and the pre-plating layer, excessive addition of bright silver plating additives will cause the silver coating to be too brittle, the CAS S test will not pass, and the long addition time interval will lead to instability after the coating, etc.; And the resulting quality problems are too numerous to enumerate

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