zinc pest造句

• A large problem with early zinc die casting materials was zinc pest, owing to impurities in the alloys.
• MZAC is an alloy of "'C "'opper similar to Zamak ), which later crumbled due to Zinc pest.
• However, Dorfan's alloys suffered from impurities, which weakened the metal and caused the trains to disintegrate over time, an early victim of zinc pest.
• Lead, as previously so widely used for cast metal toys, or iron are impurities that must be carefully avoided in this alloy, as they give rise to zinc pest.
• Some earlier models suffered occasionally from zinc pest and warping or bending chassis ( perhaps from moldings that were unreinforced ), but, overall, Tekno vehicles were of high quality finish.
• Zinc pest is dreaded by die-cast model trains, toys, or radios, because rare or otherwise valuable items can inescapably be rendered worthless as the process of zinc pest destroys them.
• Zinc pest is dreaded by die-cast model trains, toys, or radios, because rare or otherwise valuable items can inescapably be rendered worthless as the process of zinc pest destroys them.
• The occurrence and severity of zinc pest in articles made of susceptible zinc alloys depends both on the concentration of lead impurities in the metal and on the storage conditions of the article in the ensuing decades.
• Dinkys had acute problems on early models with zinc pest also known wrongly as metal fatigue, caused by impure alloys in which corrosion happens between molecules causing cracking of the metal ( Harvey 1974, p . 1997 ).
• Since the 1940s, some model railroad hobbyists have claimed, with varying degrees of success, that a method of " pickling " zinc alloy parts by soaking them in vinegar or oxalic acid solution for several minutes before painting and assembling them could prevent or delay the effects of zinc pest.
• The New Jersey Zinc Company developed zamak alloys in 1929 using 99.99 % pure zinc metal to avoid the problem, and articles made after 1960 are usually considered free of the risk of zinc pest since the use of purer materials and more controlled manufacturing conditions make zinc pest degradation unlikely.
• The New Jersey Zinc Company developed zamak alloys in 1929 using 99.99 % pure zinc metal to avoid the problem, and articles made after 1960 are usually considered free of the risk of zinc pest since the use of purer materials and more controlled manufacturing conditions make zinc pest degradation unlikely.