The cooperation between Sinotruk and the German company Mann has been fully carried out. At the press conference held on October 12th, the chairman of China National Heavy Duty Truck (Hong Kong) Ma Chunji stated that the biggest gain of this cooperation is to realize the sharing of research and development methods and resources of both parties. Sinotruk will be in two years. Achieve 100% nationalization of new engines such as the D20 and D26. He believes that this is an unprecedented breakthrough in Sino-foreign cooperation in China's heavy truck industry. A few days ago, the German company paid 560 million euros to obtain 25%+1 shares in Sinotruk (Hong Kong), and the two sides established a strategic partnership. According to President of China National Heavy Duty Truck Group Caidong, at present, China Sinotruk and German Mann cooperation projects have been fully carried out and in an orderly manner. China National Heavy Duty Truck has sent 16 middle-level management technicians and 12 staff members to Mann, Germany. The next step of the cooperation project will be specifically linked. At the same time, the four directors nominated by German Mann have been approved by the board of directors and formally participated in the work of the board of directors. The HOWO-A7, which has been clearly equipped with D20 and D26 engines by China National Heavy Duty Truck Group, is produced by the truck company. The lifting trucks of the Manga TGA model are produced by commercial vehicle companies. He said that before the end of the year, the T-truck (A7) will upgrade the model to produce a sample car, and it will achieve mass sales next year. The preliminary work of localizing the D08, D20, and D26 engines has been fully carried out. According to the company, relevant technical documents stipulated in all agreements between the two parties will also be transferred in batches in the near future. According to Ma Chunji, the company’s performance guarantee will increase by more than 12% next year. Extrusion Conical Twin Screw Barrel
Twin screw extrusion
Simply described, the twin-screw extruder is a machine consisting of two co-penetrating and self-cleaning identical screws which are mounted on shafts and rotate in the same direction in a fixed closed housing called [barrel" . The twin-screw extruders operate continuously with very short residence times.
The diameter of the screws in the conical twin-screw extruder is larger at the feed end and smaller at the die end.
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The parallel twin screw and the conical twin screw
According to whether the screw axis is parallel or not, the twin screws can be divided into the conical twin screw and the parallel twin screw, where the parallel twin screws are divided into fully intermeshing type, partly intermeshing type, non-engaged type, etc. In the case of parallel screws, the feed end and the die end have the same diameter.