柴油机高压油管又细又长,两端依靠圆锥形接触面对接。使用中常会出现两端接头螺母处渗漏或断裂的现象,其中90％以上的断裂故障出现在喇叭头与油管相接处。原因主要是安装使用不当,以致使油管接头处形成应力集中而产生裂纹,裂纹由浅到深,直至漏油而报废。为延长高压油管的使用寿命,可采取以下措施。 Diesel high pressure tubing thin and long, both ends of the cone-shaped contact surface docking. Use often appears at both ends of the joint nut leakage or fracture phenomenon, of which more than 90% of the fault occurred in the junction of the horn and tubing. The main reason is improper installation, resulting in stress concentration at the pipe joints and cracks, cracks from shallow to deep, until the oil and scrapped. To extend the life of high-pressure tubing, can take the following measures.