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Maintenance and accident handling of blank rolling machine

September 14, 2021

Rolling machine

The embryo rolling machine is one of the key equipment of the oil plant, with high price, heavy body and high repair cost. Therefore, in the production process, careful maintenance is necessary to extend the service life, which is of great significance for increasing efficiency and reducing costs.

After long-term operation of the blank rolling machine, the two sides of the pressure roller surface are often worn out, which affects the effect of the blank rolling. Therefore, you should arrange a certain time every week to grind both sides of the roll with a grinding wheel or other methods.

If the oil is not cleaned well, impurities such as stones and small iron pieces will enter the rolling mill, which will often cause pitting of the roll surface, resulting in pits on the smooth roll surface, and uneven thickness of the rolled raw material, which affects the oil output. At this time, the pressure roller must be replaced, and the pressure roller with pits will be flattened again. The area hardness of the pressure roller increases, and turning is more difficult.

The embryo rolling machine sometimes does not eat or eat less. Will seriously affect the efficiency of the rolling mill. The large vibration of the rolling mill is an important reason for the pressure roll not to eat. The jittering pressure roller continuously gives the oil an upward force, so that the oil is thrown up and down by the pressure roller, and always jumps up and down between the two pressure rollers. When the pressure roller does not eat the material, the reason should be found out, and the smooth surface of the roller must not be pitted artificially to increase the friction and make it eat the material.

Broken shaft and roll edge. In order to ensure the requirements of the rolling stock, when the unevenness of the roll gradually increases, the spring pressure must be increased. In this way, the bearing is always subjected to a radial force. Once the material flow is uneven, especially into hard objects such as iron and stones, the two pressure rollers will collide. The instantaneous impact force is quite large. As a result of repeated impacts, if the fatigue limit of the shaft is exceeded, the shaft will be broken or the edges will fall off. Therefore, it should be emphasized that during operation, the spring for adjusting the rolling distance should not be too tight, do not enter the ironware, the material flow should be uniform, and the material should not be broken, etc., are all effective measures to prevent such accidents.