trace exhaust valve in use process, can appear trace exhaust valve is damaged, so what is the cause of this situation? The following and see it together.

1。 Bad will not only improve the exhaust temperature, combustion will be formed in the combustion chamber carbon deposition. Exhaust temperatures make the exhaust Industrial Valves working environment is poor, after adding other conditions, burning loss of exhaust valve.

2。 Some of the combustion chamber carbon with waste gas discharge, also like the particles stuck in the exhaust valve and valve seat sealing surface. Especially in heavy oil heating temperature control is not good, viscosity is too large, the injection cylinder fuel atomization, high pressure oil pump plunger wear causes such as combustion, this will lead to the exhaust valve and valve seat sealing surface carbon contamination. In addition, the impurities contained in the fuel through the combustion chamber of various complex after heat treatment, the exhaust valve disc and seat sealing sedimentary cone surface into a layer of glass shape of hard brittle materials mixed with carbon particles, in which sodium sulfate, calcium sulfate, ferric oxide and other material are mixed together.

3。 When the layer of vitreous sediment deposition thickness is too large, the Industrial Valves is closed, under the action of impact crack will appear. After repeated shocks, will develop into flake, forming a high temperature gas jet channel of the Industrial Valves.

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