Tin bronze plate casting is bronze wont to produce castings. Bronze castings are widely employed in machinery manufacturing, ships, automobiles, construction and other industrial sectors, forming cast bronze series in heavy non-ferrous metal materials. Commonly used cast bronzes are tin bronze plate, lead bronze, Muntz metal and aluminium bronze. the amount shrinkage of Cu-Sn alloy is extremely small (the linear shrinkage rate is 1.45% to 1.5%), and it’s easy to supply complex castings and handicrafts with clear patterns that need accurate dimensions. In wear-resistant tin bronze, the phosphorus content are often as high as 1.2%. Zinc can improve the fluidity of the alloy and reduce the reverse segregation tendency of tin bronze. Lead significantly improves the wear and tear resistance and machinability of the alloy. Cast tin bronze is employed as wear and corrosion resistant parts. Tin Phosphor Bronze: Phosphorus could be a good deoxidizer for copper alloys, which might increase the fluidity of the alloy, improve the technological and mechanical properties of tin bronze, but increase the degree of reverse segregation. The limit solubility of phosphorus in Hebei tin bronze is 0.15%, if an excessive amount of, it’ll form α+δ+Cu3P ternary eutectic, the freezing point is 628℃, it’s easy to provide hot brittleness during hot rolling, so it can only be cold worked. Therefore, the phosphorus content in deformed tin bronze shouldn’t be greater than 0.5%, and therefore the phosphorus should be but 0.25% during hot working. Phosphorus-containing tin bronze could be a well-known elastic material. During processing, it’s necessary to manage the grain size before cold working and cold annealing after processing. The strength, modulus of elasticity and fatigue strength of the fine-grained material are beyond those of the coarse-grained material, but the plasticity is lower. Cold-worked materials are annealed at a coffee temperature of 200-260 ℃ for 1-2 hours, leading to annealing and hardening effect, which might further improve the strength, plasticity, elastic limit and modulus of elasticity of the merchandise, and increase the soundness of elasticity. Tin-zinc bronze: an oversized amount of zinc is dissolved in copper-tin alloy, and therefore the addition of zinc in deformed tin bronze is usually less than 4%. Zinc can improve the fluidity of the alloy, narrow the crystallization temperature range, and reduce reverse segregation.
Post time: Jun-06-2022