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内燃机缸盖密封技术十分重要,它要求气缸垫在一定的外加压力作用下,以垫片材料自身的塑性变形来补偿机体同缸盖接合面的粗糙度和不平度。确保密封燃气、滑油、冷却水,以防渗漏。目前使用的气缸垫主要有金属型、包复型和复合型(表1)。由于B6135系列柴油机强化指标较高,又要满足耐用和经济性的要求,通过分析论证,认为金属型气缸垫最为合适。金属型气缸垫具有突出优点,压缩恢复性强、导热好,而且耐热、耐压,使用中变形小、不需重新扭紧缸盖螺栓、可多次拆装;材料单一、厚度精度高、容易生产,尤其适宜批量生产;零件表面采用致密涂层,能有效补偿密封面的贴合和防止金属表面的腐蚀。当然,也有
Engine cylinder head sealing technology is very important, it requires the cylinder pad under the action of a certain amount of external pressure to gasket material itself plastic deformation to compensate for the body with the cylinder head joint surface roughness and roughness. Make sure to seal the gas, oil, cooling water to prevent leakage. Cylinder pad currently used are mainly metal type, package complex and composite (Table 1). Due to the B6135 series of diesel engine with higher strengthening index, but also to meet the requirements of durability and economy, through analysis and argumentation, that the most suitable metal cylinder pad. Metal cylinder gasket has prominent advantages, compression and recovery of strong, good thermal conductivity, and heat, pressure, the use of small deformation, without re-tightening the cylinder head bolts, multiple disassembly; single material, the thickness of high precision, Easy to produce, especially suitable for mass production; parts of the surface with a dense coating, can effectively seal the sealing surface and prevent the corrosion of the metal surface. Of course, there are