Tin bronze is corrosion-resistant, wear-resistant, has good mechanical properties and process performance, and can be welded and brazed well without sparks during impact. It is divided into processed tin bronze and cast tin bronze. The tin content of tin bronze for pressure processing is less than 6% to 7%, and the tin content of cast tin bronze is 10% to 14%. It is a non-ferrous metal alloy with low casting shrinkage, which can be used to produce castings with complex shapes, clear contours and low air tightness requirements.
Tin bronze is very resistant to corrosion in the atmosphere, sea water, fresh water and steam, and is widely used in steam boilers and marine ship parts. Phosphorus-containing tin bronze has good mechanical properties and can be used as wear-resistant parts and elastic parts of high-density machine tools; lead-containing tin bronze is often used as wear-resistant parts and sliding bearings; zinc-containing tin bronze can be used as high air-tightness castings. The tin content of tin bronze is generally between 3% and 14%, and it is mainly used to make elastic components and wear-resistant parts.
The tin content of wrought tin bronze does not exceed 8%, and elements such as phosphorus, lead, and zinc are sometimes added. Phosphorus is a good deoxidizer and can also improve fluidity and wear resistance. Adding lead to Hebei tin bronze can improve machinability and wear resistance, and adding zinc can improve casting performance. This alloy has high mechanical properties, anti-wear properties and corrosion resistance, easy cutting processing, good brazing and welding properties, small shrinkage coefficient, and non-magnetic. Wire flame spraying and electric arc spraying can be used to prepare coatings such as bronze bushings, shaft sleeves, diamagnetic elements, etc.
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