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内燃机的性能,在很大程度上取决于汽缸盖的设计。目前,流行的防污染和节能问题,导致了汽缸盖设计的复杂化。对柴油发动机来说,汽缸盖必须具有一定的刚性,以能承受装配应力和承受高压;并且坚实而无缺陷,这样才能有良好的密封性。因此,采用一种可靠而有效制造汽缸盖的方法,是一个最根本问题。一、采用低压铸造生产汽缸盖的原因 1.金属型铸造技术的局限性 (1)液态金属在重力作用下浇入金属型腔过程中,要做到没有紊流、不卷入空气和没
The performance of an internal combustion engine depends to a great extent on the design of the cylinder head. At present, the popular anti-pollution and energy-saving problems, leading to the cylinder head design complexity. For diesel engines, the cylinder head must have a certain rigidity to withstand the assembly stress and withstand high pressure; and solid without defects, so as to have a good seal. Therefore, adopting a reliable and efficient method of manufacturing a cylinder head is one of the most fundamental problems. First, the use of low pressure casting cylinder head production reasons 1. Metal casting limitations (1) liquid metal poured into the metal cavity under the action of gravity, to be no turbulence, not involved in the air and did not