The damage to the case of the iron fan

The damage of the iron fan case - 2018 08 - 22 ( Lianyungang new iron and steel co. , LTD. , iron) One, the introduction on February 21, 2018, the annual fifth day, when people are immersed in the festival of the Spring Festival, a steel company in iron powder coal injection workshop 2 row fan bearing box temperature suddenly rise sharply, bearing box of flue gas, downtime, the rotor, holding in death of the fan were forced to emergency stop. Second, the site condition after the accident, equipment and maintenance personnel rushed to the scene the first time, after open the bearing box inspection found that the rotor end bearing cage has high temperature melting into copper beads, bearing damage can't turn. After being led will report the situation to the factory, factory leadership decided to immediately replace the fan rotor, in order to ensure the normal operation of production. Under the intense work on the equipment and maintenance personnel, after 10 hours of time will fan rotor replacement is complete, launch a successful commissioning, fan fan of vibration, temperature, within the scope of operation, guarantee the normal coal injection of blast furnace. Three, accident analysis causes of the fan bearing damaged by high temperature, is the post work day of fan bearing box lubricating oil for the replacement, according to the regulations of the fan operation instructions, fan bearings should be added in the 46 # turbine oil, and the post work is wrong to add 320 # closed gear oil. Due to high viscosity of the gear oil bearing temperature damage and is often one of the reasons that the equipment accident. Another reason analysis: from the peephole of bearing box, peephole lenses are vague, the original fuel left traces, is likely to be oil level is not added to the position, make the high-speed rotation of the bearing is not sufficient lubrication caused by high temperature, the final result in bearing damage. Four, conclusion from the source to contain the accident, to ensure the smooth progress of production safety, the employees should know should education training, to regulate the employee's correct operation, to avoid all kinds of accidents. So the operations specifications necessary training to employees, is also the premise and guarantee as well as enterprise safe production.