Tin shedding and plating two-in-on liquid medicine using system

Abstract

The invention provides a tin shedding and plating two-in-on liquid medicine using system. The tin shedding and plating two-in-on liquid medicine using system comprises a tin plating tank, a tin plating auxiliary tank, a tin shedding tank, a tin shedding auxiliary tank, a first pressure pump, a second pressure pump, a first connecting pipe, a second connecting pipe and a third connecting pipe; oneend of the first connecting pipe communicates to the water inlet end of the first pressure pump, and the other end of the first connecting pipe is in communication with the bottom of the tin plating auxiliary tank; one end of the second connecting pipe communicates to the water outlet end of the first pressure pump, and the other end of the the second connecting pipe is in communication with the top of the tin plating auxiliary tank; and one end of the third connecting pipe communicates to the water inlet end of the second pressure pump. The tin shedding and plating two-in-on liquid medicine using system can automatically replenish the tin plating tank for electrolyte, does not need manual adding, reduces the workload of staff, is convenient to use, is beneficial to widespread promotion, and can reduce environmental pollution and waste liquid discharge.

Description

technical field [0001] The invention relates to the technical field of tin plating process, in particular to a two-in-one liquid medicine application system for deplating tin. Background technique [0002] Tin plating and its alloys are coatings with good solderability and certain corrosion resistance, and are widely used in electronic components and printed circuit boards. In addition to physical methods such as hot dipping and spraying, methods such as electroplating, immersion plating and chemical plating have been widely used in industry because of their simplicity. Dip plating is to immerse the workpiece in a solution containing the metal salt to be plated. According to the principle of chemical displacement, the metal coating is deposited on the surface of the workpiece, which is different from the general chemical plating principle, because the plating solution does not contain a reducing agent. It is also different from contact plating. Contact plating means that wh...

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Problems solved by technology

[0003] The traditional alkaline etching process consists of tin plating and tin stripping solution. The tin plating solution needs to use metal tin balls to supplement the consumption of tin, which is very expensive. The main component of the tin stripping solution is nitric acid, which has a particularly large impact on the environment. Waste liquid recycling Cost, and the traditional alkaline etching process, the electrolyte will evaporate when it is used, and it needs to be added manually, which increases the workload of the staff, and the staff cannot add the electrolyte in time, which affects its processing quality

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