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INTRODUCTION
It is used for electroless stripping of silver coating, which can be widely used in stripping silver coating on copper substrate, nickel substrate and aluminum substrate.
Operate at normal temperature, no heating is required.
No electricity is required, energy savings.
Neutral conditions, excellent stability.
Less corrosion resistance to copper and nickel substrates, it is especially suitable for the stripping of unqualified silver coatings such as lead frame. And it can be re-plated after stripping and pre-treatment.
The stripping rate of silver is about 0.3-1.0 μm/min (depending on the condition of silver coating).
Non-toxic and environmental protection, no use of nitric acid, cyanide and other toxic substances.
SOLUTION MAINTENANCE
Overreaction and excessively high temperatures have a serious impact on the working life of the solution. So 24-hour constant temperature is a good measures to ensure the solution temperature is <35℃.
After make-up, the solution should be continuity of operation to reduce the consumption of itself breaking down.
The stock solution should be added proportionally if the stripping rate slows down; when the stripping rate drops, 1/5 - 1/2V old working solution should be taken out, then replenish an appropriate amount of RC-CS126 while stirring, and add water to a fixed volume to restore the stripping rate. If the solution is aging, add an appropriate amount of precipitant, then adjust after filtering, so that the solution is regenerated and can be reused.
MATTERS NEEDING ATTENTION
Someone should should take care of the temperature change when stripping. After stripping, the parts should be removed immediately to avoid corrosion of the substrate, resulting in excessive ion concentration and affecting the working life of the solution. There should be a cooling system in the tank to control the temperature easily, pay attention to safety and prevent boiling when the solution temperature is higher than 40℃ (Generally, boiling will not happen. If so, 1/3V solution need to be taken out).
Metal parts on equipment shall be made of stainless steel bars (SUS), not iron, titanium, etc. The place of machinery and equipment needs to be equipped with exhaust pipes.
The storage of the solution should be placed in a dark, cold place and cannot be directly exposed to sunlight or high temperatures and fires. Air circulation should be maintained to avoid closed places.
Wear protective gloves during operation, and avoid skin and eye contact. If so, rinse with water immediately for a few minutes and seek medical help if necessary.
RECYCLING OF WASTED SILVER SOLUTION
Precipitation: add a suitable amount of hydrochloric acid or sodium chloride solution so that silver ion precipitation and solution separation. After sedimentation and filtration, it can be further purified or sold to a recycling company.
Electrolysis: elemental silver can be obtained by electrolysis of silver ions in waste solution at the cathode. The anode is graphite, the cathode is stainless steel, the cell voltage is 2-3 V, and increases to 3-5 V with the reduction of silver ions in the bath. Then the solution can be reused after adjustment.
SAFETY AND ENVIRONMENTAL
Silver anti-tarnish should prevent from skin and eye contact. If so, rinse with water immediately and seek medical help if necessary.
A Material Safety Data Sheet (MSDS) includes product safety instructions and environmental protection instructions. Read and review the MSDS for appropriate health and safety warning before use.
WARRANTY
1. We provide guarantee for product quality under the valid law.
2. The quality of the product after reprocessing or repackaging by customer is not included in the guarantee.
3. Please feel free to contact us if you have any questions or issues about the products, we are ready to answer at any time.
COLOR & PACKAGING
RC-CS 126 electroless silver stripping agent is a colorless liquid with plastic barrel packaging. The packaging specification is 25 kg/pcs.
?IMPORTANT NOTICE REGARDING THIS INSTRUCTION BOOK
The product information and recommendations contained in this document are based on our experimental theory and data. Due to the particularity of the surface processing, further as the actual use of our products by others is beyond our control, NO GUARANTEE of any kind is made as to the effects of such use, and NO RESPONSIBLE for any consequences. Also, all the information in this document cannot be used as evidence of copyright infringement.