Lead and zinc alloy zinc alloy element detection tests

 Detection / Consulting: 180-2871-9376 (Wang Li) QQ: 2419906857 lead alloy surface oxides, sulfides or other complex salt compound coating in the corrosion process, there to prevent oxidation of sulfide, dissolved or volatile effect, so In the air, sulfuric acid, freshwater and seawater have good corrosion resistance. Lead alloys which contain no lead or the formation of a solid solution in bismuth, magnesium, zinc and other impurities in the second phase, the corrosion resistance will be reduced; adding tellurium, selenium can eliminate the harmful effects of impurities on the corrosion resistance of bismuth. Join in lead alloys containing bismuth antimony and tellurium, can be refined grain structure, increase strength, inhibit the harmful effects of bismuth and improve corrosion resistance. Lead alloys with low melting point (below 327 ℃), good liquidity, solidification shrinkage is small, less melt loss, small change when melting ingredients, complex shapes can be cast, a clear outline of the device, widely used in casting and production type models . Pewter for the printing industry has been 500 years of history. Modeling and casting lead alloy used word, contains from antimony increases the hardness and strength, reduces solidification shrinkage effect; tin contained from improving mobility and contour sharpness effect. The use of low melting point of lead alloy as model material, production process is simple, and there is a certain life, product changes and refurbished model is very convenient, the terms of the relevant domestic professionals focused on the steel network of excellence.