Views: 0 Author: Site Editor Publish Time: 2022-09-27 Origin: Site
The processing amount of the middle groove is mainly concentrated on the manufacturing of the groove side steel and the connection of the groove side with the middle plate and the back plate.
Rolling process is often used for groove side steel in traditional process. Except that the medium single chain of the light scraper conveyor is made of cold rolled channel side steel, others are made of hot rolled channel side steel. The specification of split rolling groove side is larger than that of common rolling groove side, but the welding process of the middle groove is complex, the welding workload is large, and it is easy to deform. The groove side is made of rolled steel, and its surface is smoother than that of cast steel with less friction.
From the perspective of development, the casting groove side is showing more and more advantages. The groove end in the middle of the integrally cast groove side becomes a part of the casting groove side, and higher strength connectors can be used to achieve bolt free connection and accurate positioning between grooves.
At present, the fully cast non welded middle groove has been developed. The special vacuum casting technology is adopted. The high-strength wear-resistant alloy TNZ-12 is selected as the material. Arc and smooth transition are widely used in the appearance and structure to effectively avoid the collision of the scraper. Moreover, the contact area between the scraper and the inner side of the groove is large, the contact pressure is small, and the lubrication component is added to the material to effectively reduce friction. Recycling can be realized by recycling and remelting the middle tank whose service life reaches the limit.
For the conventional middle groove, the welding of groove side and middle plate, groove side and back plate accounts for more than 80% of the welding work. Therefore, the improvement of the welding efficiency and weld quality of the groove side, the middle plate and the back plate will directly affect the overall manufacturing efficiency and weld quality of the scraper conveyor.
Recently, the Jining High-tech Zone General Trade Union and the Human Resources Department of Jining High-tech Zone jointly announced the 2024 'High-tech Craftsman' list. Li Zhenbo, General Manager of Information Technology at China Coal Group and General Manager of Zhongyun Group, was awarded the title of 'High-tech Craftsman' for his outstanding contributions and innovative spirit.
On September 30th, China Coal Group held a grand cultural performance to celebrate the 75th anniversary of the founding of the People's Republic of China with the theme of 'Forging Ahead to Celebrate the Birthday of the People's Republic of China' in the conference center. The chairman of China Coal Group, Mr. Qiu Qing, the general manager of China Coal Group, Mr. Han Yong, and all the members of the leadership team of China Coal Group attended the event and witnessed the grand celebration together with more than 1,000 employees on the spot. The cultural performance was conducted in the way of 'on-site + webcast', aiming to show the spirit of the cadres and workers of China Coal Group and express the love and blessing to the great motherland through colorful cultural programs.
On September 29th, in this season of autumn and fruitfulness, China Coal Group, full of joy and pride, participated in the ‘Harvest Celebration and National Day’, which was jointly organized by Jining Hi-Tech District Federation of Trade Unions and Jiezhuang Street to welcome the 75th anniversary of the founding of New China and the Farmer's Harvest Festival.
