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1.序言近年来,减轻重量已成为汽车行业课题之一,目的是达到低油耗、高功率,在这方面气缸体存在问题。为此,要求铸件实现薄壁化,这就要求研制出能适应由此产生的热变形、振动及具有耐磨性和刚性的优良材料。最近,在2000cm~3以上大型汽车上采用铝制气缸体已成为一种趋势。日本森川产业公司每月把40多万个气缸套压装或铸到气缸体内。近年来,四轮汽车用气缸套从10%增加到20～30%,说明生产在发展。特别引人注目的是金属型铸造法,采用此法生产的铸件,强度高、切削性良好,因而用途不断扩大。一般说来,大多数是共晶石墨铁素体铸铁。
1. Introduction In recent years, weight reduction has become one of the topics in the automotive industry with the objective of achieving low fuel consumption and high power. There are problems with the cylinder block in this respect. For this reason, the requirements for casting thinning, which requires the development of the resulting deformation, vibration and has excellent wear resistance and rigidity of the material. Recently, it has become a trend to adopt an aluminum cylinder body in a large car of 2000 cm 3 or more. Japan’s Morikawa industrial company put more than 400,000 cylinder liner per month or cast into the cylinder body. In recent years, four-cylinder automotive cylinder liner increased from 10% to 20 to 30%, indicating the development of production. Of particular interest is the metal casting method, the castings produced by this method, high strength, good machinability, and therefore the use continues to expand. In general, the majority of eutectic graphite ferrite cast iron.