Uzbekistan’s state-owned enterprise, located in Bekabad, built a large steel production enterprise in the Soviet Union in 1944,the annual output of steel is 700,000 tons with 2 production lines for bars and 1 high-line production line.
Our company designed pre-cut composite rolls (19&20&21 stand) for the No. 1 and No. 2 bar production lines in 2018, and provided five sets of composite rolls, which have been used well. In April, the customer reported that there was a horizontal cross crack in the roller ring in 19th stand, and provided the rolling record and photos. Our engineers immediately conducted a seminar and get a preliminarily judgement that the temperature of the composite roll shaft was too high, causing the roller ring burst ,and the same time,require customer provided a photo of the water pressure gauge at the time of production running,in order to avoid in the future,customer invited our engineers to discuss with the steel mill engineer at site.
In order to solve problems swiftly for steel enterprises and avoid such incidents from happening again,our company decided to arrange engineers to go to Uzbekistan immediately. After confirming the itinerary with customer, we arrived in Uzbekistan in May and immediately inspected the site once we arrived. Rolling mill stand,rolled material, production specifications, production process and so on,on-site viewing of the customer’s process of replacing the cooling water pipe and the bearing.
Lastly get the conclusion at site with engineers of steel plant,and Combined with the transverse cracks appearing in the roller ring, and the experience of domestic and foreign use,we gave our solution at site,and they accepted it,and hope we could improve the production line together.
Since the customer did not have the disassemble ability, the final agreement was reached to transport the composite roller to our factory for maintenance and replacement. It is the first time for our company to return the repair of the composite roller of foreign customers, which lays a foundation for providing faster and more efficient services to foreign customers in the future. At the same time, it also solves the hidden dangers of the composite roller for oversea small steel enterprises.
The technical negotiation was a complete success ,and we also felt the local culture of Uzbekistan and the warm reception of our customer.We are always striving for excellence and quality. LMM hope that we could make more contributions to Uzbekistan steel companies with our joint efforts.
