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What parts of tin bronze casting can be applied in practice?
- May 03, 2018 -

Copper is a very typical nonferrous metal. It is widely used in various fields, and it is much used in addition to aluminum. Tin bronze is a kind of bronze with tin as the main alloy element. Its tin content is generally controlled between 3 and 14%, and tin bronze casting can be used as an elastic element and a wear-resistant part.

 Since tin bronze is one of the smaller casting shrinkage rates in many nonferrous alloys, it is very suitable for making castings with complex shapes, clear outlines and low air tightness. Tests have proved that tin bronze castings are very corrosion resistant in atmosphere, seawater, fresh water and steam, so they are widely used as steam boilers and seagoing parts.

 In the production of tin bronze castings, phosphorus, lead, zinc and other elements are sometimes added. As phosphorus is a good deoxidizer, its addition can improve the fluidity and wear resistance of the tin bronze casting, while the addition of lead in tin bronze can improve the machinability and wear resistance, and the addition of zinc can improve the casting properties, thus making the tin bronze cast. The performance of the piece is also changed.

 The alloys with other elements have high mechanical properties, wear reduction and corrosion resistance, and have the advantages of easy cutting, brazing and welding, small shrinkage coefficient and no magnetic properties. So the bronze bushes, bushing and antimagnetic elements can be prepared by wire flame spraying and arc spraying.

 In practical applications, most of the wear-resistant parts and elastic parts of the high precision working machine are made of phosphor tin bronze castings, while the wear-resistant parts and sliding bearings are made of lead-tin bronze castings, and the zinc containing tin bronze castings have become the ideal choice for high gas tightness parts.


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