Causes and Prevention of Crash Cylinder Cushion of Tractor
The cylinder head gasket is an elastic seal gasket between the cylinder head and the joint surface of the body, and its function is to fill in the microscopic pores on the joint surface, and further ensure that the joint surface has a good seal. Therefore, this requires that the materials used to make them have good elasticity under conditions of high temperature and corrosion. “Chong cylinder cushion†generally refers to a failure phenomenon that under the abnormal impact of high-temperature, high-pressure gas or cooling water, the sealing surface of the cylinder pad is damaged and the sealing effect is lost. After the cylinder head gasket is damaged, the following phenomenon will occur: the engine overheats and the operation is inefficient; air bubbles are generated in the water tank and hot air is generated from the water inlet; the oil sump is flooded to increase the oil level; the exhaust pipe is sometimes drained outwards, etc. . If the head gasket is removed, burnt black marks can be seen in the damaged area. The reasons for the cylinder head gasket being damaged mainly include cylinder heads and bolts, cylinder sleeve shoulders, improper installation and maintenance, etc. The reasons for the cylinder head gasket being damaged due to the cylinder head and the bolts are introduced as follows: 1. If the tightening torque of the cylinder head nut is too small, the nuts are not tightened evenly in the diagonal order, or the cylinder head nut tightening torque is too large and the bolts are deformed, the cylinder head gaskets cannot be interposed between the cylinder head and the cylinder block. Closely pressed, resulting in high-temperature and high-pressure fuel gas from the cylinder out of the burn cylinder pad. Therefore, when the cylinder head is assembled, the nut of the cylinder head must be evenly tightened in a cross-symmetrical order with the specified torque three times, and after the tractor is put into operation for 1 to 2 shifts, the tightening status of each nut should also be checked. 2. The cylinder head bolts are loosened or constricted and stretched, which results in inconsistent pressures on the joint surfaces of the cylinder head and the cylinder head gasket, and even gaps occur in individual parts. As a result, high-temperature and high-pressure gas is sucked out of the gap, and the cylinders are often washed in the same position. pad. If it is found that individual bolts are loose, the bolt can be pulled out of the cylinder screw hole, the screw hole is enlarged, and a bolt with a thickened lower thread portion is added for use. Cylinder head bolts are specified in cold-drawn, annealed 40 gauge or 45 gauge steel. In addition, the roughness of the working face of the cylinder head and the cylinder block may also cause the cylinder pad to leak when it is working and be damaged. The roughness Ra of the working surface of the cylinder head and block shall not be greater than 6.3 μm. When this value is exceeded, the working face shall be ground to meet the requirements. Royal Jelly is also called Bee Milk. The fresh royal jelly is slightly ropy milk paste substance; it is the excretive mixture of nutrition gland and maxilla gland of the head of little worker bee. The worker bees use this to feed the 1-3 days` worker bee larva and drone larva, 1-5.5 days` queen bee larva and queen bee in the oviposition period. The royal jelly is the biologic product containing very complicated active elements which contains almost all the nutrition elements required by the growth of the human body. Royal Jelly Royal Jelly,Natural Royal Jelly,Healthy Royal Jelly,Organic Fresh Royal Jelly Easy Food (Jiaxing) Co., Ltd. , https://www.jxeasyfood.com