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汽缸体和汽缸盖质量的好坏,都将直接影响汽车发动机的性能。它们的形状复杂,技木条件要求较高,一向被,列为是最复杂的铸件之一。交通牌发动机为六缸四行程汽油发动型式,它的缸盖毛坯如图1所示,轮廓尺寸为长710毫米、宽170毫米、高130毫米。最大壁厚约35毫米,最薄处为5毫米,平均壁厚7～8毫米,铸件净重55公斤,在整个长度上分布九道弯曲的进排气管道、20多个螺孔搭子,环绕搭子和管道的是互相贯通的冷却水道。技术条件为:
Cylinder block and cylinder head quality is good or bad, will directly affect the performance of the car engine. Their complex shapes, demanding technical conditions, has always been, as one of the most complex castings. Traffic license plate engine for the six-cylinder four-stroke gasoline-launched type, its cylinder head blank shown in Figure 1, the outline size of 710 mm long, 170 mm wide and 130 mm high. The maximum wall thickness of about 35 mm, the thinnest at 5 mm, the average wall thickness of 7 to 8 mm, castings net weight 55 kg, throughout the distribution of nine curved into the exhaust pipe, more than 20 screw take the child around Laps and pipes are interconnected cooling waterways. Technical conditions are: