7 A,M on August 31, 2014, producing abnormal squad He Yongchen heard a ring near the mill three workshops vertical mill, followed immediately reported. Sha Yunde,Benxi general manager of the company after Benxi sand shipped Germany was informed immediately dealed it with production manager, director of mechanical and electrical equipment to the scene on the ground view, the initial judge the sound from the main vertical mill reducer. To ensure the production of sand total issued immediately arrange contact Hefei Central departments and main reducer manufacturer NGC. September 1 to September 2, 2009, two experts in plant succession scene. After expert on-site diagnostic summary, the proposed device can continue to use, but need to continue to observe the operation of equipment, such as aggravated circumstances must immediately and contact an expert. Then sand the total organized several meetings, require the production department to reduce feeding amount and every 30 minutes observing and recording gear vibration values, but also on whether the abnormal sound equipment intensified monitoring. 

On 14:30 September 12, 2014, unusual percussion heavier gear, sand total and Production Department held an emergency meeting to explore, stop feeding equipment resolute decision and immediately contact the Hefei Institute and NGC experts. From this moment on, everything started with the race against time, the first a minute to let the device back to normal, we can reduce the loss of one minute company. So the work of various departments are beginning to go hand in hand, in a race against time.

First, on September 12 evening ,Purchasing Manager Lin Qianyao and public relations department manager Yu Xinli flied to Nanjing NGC at night, visited its factory completed a gearhead model meets the needs of our plant vertical mill. After confirming that meets our needs, immediately do the payment, purchase and transport matters and other aspects of confirmation. 

    Subsequently, on September 14 and NGC Hefei Institute of experts to the plant, began to organize to remove the failed reducer. The demolition work must be completed within 3 days in order to follow-up after the new gear arrived to lay the foundation for replacement. 

  On September 17, more than 90 tons of gear shipped to Yantai, because it’s not ranked on the tonnage can not be on board, after various efforts finally arrived in Dalian in the 18th. Arrived in Dalian after facing a high-speed weight and time constraints, Li Xianguo of Purchasing Department, Yang Jun, Wang Jinpeng of Marketing Department , quickly drove to Dalian multifaceted communication, financial managers responsible for road Benxi aspects of outreach Zhang Xiaoyan also stay up late multiparty communication release conditions. 

Finally,19 P.M on September 21, reducer into the plant up! At this moment, Benxi Yongxing  had to do all the installation preparation plant, personnel, cranes, logistical support, and so readily available, reducer one to immediately install! September 20 morning reducer installed, start looking now. September 21 morning 7:00, three main workshop vertical mill reducer finally installed, start idling, 10:30 start with material test run. September 22 early into the normal full capacity. 

From the gear reducer into the plant to full installation of two days and nights, Lin Pingguang ,manager of the production department, Wang Liwen, Wu Lin, Xu Liuxing ,Ma Jikui, who always stick in the first line, and led the team personnel fighting machine repair two whole days and nights did not sleep a wink. Hefei Institute experts see their selfless work of the spirit are very exclaims: "! Normal reducer installation requires 10 days or so, Benxi Yongxign has used such a short time to complete this work is really admirable."

Dismantled the old gear was viewed as a planetary gear along the axis of the tooth root is completely split, gear section was misplaced. The reason for the initial judgment rough material, forging, problems machining, heat treatment and equipped process. Currently Purchasing Department has been actively associated with the follow-up to deal with matters Hefei Institute. 

So far, the old and the new gearbox has been replaced vertical mill downtime to recover from production, through the eight days and eighteen hours, a total of over two hundred hours. In over two hundred hours of time, the company can unite, race against time, to minimize the loss. 

If no timely detection of a fault, if there is no attention to equipment failure, if not constantly monitored, if not decisive stop, if not we work hard, if ...... then today our loss is difficult to estimate. Production is no small matter, the equipment is no small matter, as long as we have paid attention to equipment, to be conscientious, intentions people, then no matter what difficulties ,they will be killed in the end.