ningyun exhibition, male, born in 1972, Communist Party members, South car Qingdao Sifang locomotive and vehicle Limited by Share Ltd vehicle fitter advanced technician, China South car skill special Home. The Ningbo, born in 1972, is the chief grinder of the high speed rail. The first domestic worker in the high speed rail bogie "positioning arm" is a representative of the highest skill level in the process. It is called the "ancestor" by his colleagues. The bogies grinded by him and his team have been loaded with 673 high-speed EMU and more than 900 million kilometers in the Mercedes. It is equivalent to more than 20 thousand circles around the earth. He perseveres in innovative research, and many of the topics and inventions made by him can save nearly 3 million yuan a year for company savings.
[work in the work of the Ningbo]
ningyun as a workman's family. In the eyes of a craftsman's father, Ning Yun exhibition liked his craft from an early age. In 1991, the 19 year old ningyun exhibition was graduated from the railway technical school and entered the four square locomotive and rolling stock factory (the predecessor of the Sifang joint stock company of the South car), and engaged in the work of the vehicle fitter for 24 years. In 2004, China South car Sifang company began to introduce high-speed EMU technology from abroad. Bogie is one of the nine key technologies of high speed EMU, and the "positioning arm" of bogie frame is the core part of bogie. If the high-speed train is compared to a long-distance runner, the bogie is its "leg", and the train must run fast and stable. The combination of bogie and wheel is the "positioning arm", which is equivalent to the "ankle" of the train.
speed up to more than 200 km when the high-speed EMU runs, the positioning arm and the wheel pair must have more than 75% contact surface clearance less than 0.05 millimeters, otherwise it will directly affect the driving safety. The only feasible method of operation is manual grinding. However, after the rough machining of the positioning arm, the space left for manual grinding is only about 0.05 millimeters.
after a number of repeated studies, it will take only a week to master the technology that the foreign skilled workers take months to master and break the bottleneck. After the high-speed EMU enters mass production stage, the "external" grinding method is no longer suitable for the production needs of enterprises. Ningyun will look at the grinding process. He experimented repeatedly and experimented for nearly half a year, inventing "the pure hand grinding operation method of the pneumatic grinding wheel", using the layered, interlaced and superimposed grinding, and weaved the contact surface of the positioning arm into a fine and highly frictional "net". The grinding method has increased the grinding efficiency by more than 1 times and the contact rate of the contact surface has increased from 75% to more than 90%. At present, only with the positioning arm grinding, only one person can be used in the grinding space of 0.05 millimeters in the country.
wholeheartedly to do craft, improper squad leader is not an official, rooted in the line for 24 years, Ning Yun exhibition and many people have different pursuits. "I am not perfect, but my product must be perfect. To do this, we need to do solid work all our life. " This is the creed of ningyun.