Why is it difficult to start the welding machine in winter?

1. Why is it difficult for electric welding machines to start in winter? Not only depends on their own technical conditions, but also affected by the outside temperature. Starting at low temperatures in winter is more difficult, mainly due to the following reasons:
⑴ In winter, the climate is cold, the ambient temperature is low, the oil viscosity increases, and the frictional resistance of each moving part increases, which reduces the starting speed and makes it difficult to start.
(2) The battery capacity decreases with the decrease of temperature, which further reduces the starting speed.
⑶ Due to the decrease in starting speed, the increase in compressed air leakage, and the increase in the heat dissipation of the cylinder wall, the temperature and pressure of the air at the end of compression are greatly reduced, which increases the delay period of diesel ignition, and even cannot burn in severe cases.
⑷ The viscosity of diesel at low temperature increases, which reduces the injection speed. In addition, the swirl speed, temperature and pressure of the air at the end of compression are relatively low, which makes the atomization quality of the diesel injected into the cylinder poor, and it is difficult to quickly form a good relationship with the air. The combustible gas is ignited and burned in time, or even cannot catch fire, resulting in difficulty in starting.