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The methanesulfonic acid tin plating system has numerous technical advantages such as a non-toxic and stable plating solution, complete biodegradability under natural conditions, simple wastewater treatment, high current efficiency, strong throwing power, wide current density range, and low tin sludge generation. Therefore, the methanesulfonate tin plating system is the most widely used high-speed tin plating method in industry.
Tinplate, also known as tin-coated steel, is a low-carbon steel sheet with a tin coating on its surface. It combines the advantages of steel and tin, possessing the strength and formability of steel as well as the corrosion resistance and solderability of tin. High-speed coil-to-coil tin plating on steel surfaces can provide corrosion protection. Additionally, because tin ions and their compounds are harmless to the human body, and the tin coating has good corrosion resistance, ductility, and weldability, tinplate is also widely used in the processing, packaging, storage, and transportation of food, such as in canned goods.
The core of the methanesulfonic acid tin plating system lies in the additives within the tin plating solution. This area is currently monopolized by foreign companies, with limited domestic research. Therefore, developing methanesulfonic acid tin plating system additives with independent intellectual property rights is a very significant undertaking.
Hard chrome plating utilizes the inherent physical properties of chromium metal, such as high hardness, wear resistance, and corrosion resistance, to improve the performance of the base material. It increases the base material's hardness and enhances its wear resistance and corrosion resistance.
Widely used for hard chrome plating on workpieces in the automotive, motorcycle, textile machinery, papermaking machinery, hydraulic machinery, crystallizers, and molds industries.
1. The cathode current efficiency can reach up to 22%～26%;
2. The hardness of the coating can reach HV900-1100;
3. The microcracks in the coating can reach between 400～1000 pcs/cm;
4. The coating thickness is uniform, and not easy to produce blisters. The appearance is smooth, delicate, and bright;
5. The plating solution does not contain fluoride; the workpiece has no corrosion in the low current density region. The etching of the anode is similar to traditional chromium plating;
6. The plating solution is easy to maintain and operate.
