What are the common faults ball mill job, there will be severe vibration phenomenon, which may be at the time of installation, there is no fixed base, or is not broken into the material, and so on. In addition to these common faults ball, what does? A main bearing leakage reasons: ① pipe joints lax; ② spherical bush cracks. Solution: ① joint sealant reassembled Tieling mill, pipe joints enhance sealing; ② bonding method or welding method spherical bush crack repair. Second, the drive shaft and bearing bolt breaking reasons: ① shaft coupling is not properly installed, mill manufacturers, the deviation is too large; the ② shaft overload; ③ shaft insufficient strength or poor quality; ④ Bearing not properly installed, or the connecting bolts loose (or tight). Solution: ① re-adjust the coupling installation; ② prevent overload phenomenon; ③ replace good quality shaft; ④ bearing installation alignment, replace the bolts, tighten the bolts to moderate. Third, the liner material leakage at the connecting bolt reasons: ① liner bolts loose or broken; ② severe liner wear; ③ gasket wear. Solution: ① Tighten or replace bolts; ② repair or replace liner; ③ Replace gasket. Fourth, when the great causes vibration reducer drive Mill: ball mill and the balance shaft gear, because the axis is not in a straight line, causing great vibration occurs when the gear drive ball mill. Workaround: To re-adjusted so that the ball mill gear axis and the axis in the same plane as the axis line. Fifth, the feed end of the drain material reasons: ① intake valve is between the feed tube with the feed screw and the gap between the feeder and hopper large, poor sealing; ② felt seal pad wear or fall off. Solution: ① adjust the gap, ball, sealed; ② replace the felt. Buy mill test should pay attention to what? When users buy equipment, the most feared device encountered situation is not overpaid, but the device can not be used to buy back. Every piece of equipment in the factory will use the test after numerous operations. Many users will be required to purchase a ball mill manufacturers face the test, the device can not be afraid to buy and become a pile of scrap metal, in fact, this is very necessary, as equipment buyers, caution is necessary. In this paper mill as an example of several important factors to explain the user after purchase of equipment commissioning. Preparations First, before commissioning. 1. Check the motor and electrical, ministries screw fastening; 2, check lubrication, seals and other measures is in good condition and jigger; 3, check for anomalies. Second, the load test. Before the device was put into operation, all need to be no-load test. When the ball through the disc drive after no abnormal phenomenon, you can load (no media and material) up and continuous operation of 8 ~ 16h to meet the following requirements. 1, no oil lubrication normal; 2, mill main bearing temperature does not exceed 50 ℃; 3, smooth operation without abnormal sound; 4, no loosening of the components. Third, load test for the appropriate number of materials and water (not consecutive) transport junction 8 ~ 10h. After the load test failures also need to load test. In the semi-load test to check everything is normal, the media plus foot, ball mill working principle, an appropriate increase in the amount of ore, running at full capacity 10 ~ 20h, and finally meet the following requirements. 1, no abnormal sound smooth operation; 2, the main motor current fluctuation within the allowable range; 3, the temperature in the allowable temperature rise less; ministries lubrication normal; 4, the main bearing temperature 60 ℃; ministries seamless ore, leakage, oil leakage . The customer decides to purchase equipment to confirm the device can accurately and trouble-free run-time is very important, but also important steps to safeguard the economic efficiency of enterprises, we hope that every equipment manufacturers and users can do a good job before commissioning the equipment to ensure the equipment No fault smoothly. _ North Mine Mill Zhongcheng (certified) _ Tieling ball from Shenyang North Mine Zhongcheng machinery Limited. Shenyang North Mine Zhongcheng equipment Limited (sybkzc.com) (www.sybkzcjq.com) Liaoning Shenyang, machining leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In North mine public into leadership with the staff warmly welcome all inquiries negotiations to create the North mine public into a better future.