On the 19th, it was reported from PetroChina Daqing Refining & Chemical Company that the 300,000-ton/year large-scale extrusion granulation unit reduction gear box repaired by Dalian Rubber Plastics Machinery Co., Ltd. has been running smoothly. For the first time, the transformation of the old equipment core equipment of large-scale extrusion granulation units was undertaken by domestic enterprises, marking that China has fully realized localization in the production and transformation of large-scale extrusion granulation units. The gearbox has been hailed by the industry as the "heart" of major technical equipment. As a large-scale extrusion granulator for one of the three million-ton ethylene engineering power plants, China has now implemented "China" in its core equipment for new and old equipment. Created." Industry experts predict that by 2020 domestic ethylene production will reach 24 million tons, a net increase in production of 18 million tons, together with the annual renewal of ethylene companies, a total of more than 100 sets of large extrusion granulation units. Industry experts said that domestic enterprises can participate in the production of large extrusion granulation units and the transformation of old units, which will save the country at least US$1.5 billion in funds. According to the person in charge of PetroChina Daqing Refining & Chemicals Co., Ltd., in mid-September, the company’s core equipment reduction gearboxes for large extrusion granulator units imported from Japan in 2005 failed. The person in charge of on-site guidance and installation insisted that repairing the reduction gear box weighing more than 40 tons must be shipped back to Japan. No company in China can assume this responsibility. Shipping back to Japan means paying expensive processing fees and shipping costs, and it takes at least 3 months. On October 1st, the technicians of Dazhou Rubber & Plastic Co., Ltd. appeared at the scene of the accident. After careful examination of the gearbox, they resolutely took up the task of repair. Previously, Daxiu Plastic successfully manufactured the first domestically produced 250,000-ton/year polyethylene extrusion granulation unit and 100,000 tons/year polypropylene extrusion granulation unit and other devices. Its independently designed large-scale extrusion granulator core The device gearbox has been verified in actual production. In the following month or so, the technicians of Dazhou Rubber and Rubber Co., Ltd. successfully completed the maintenance task, and the 300,000-ton/year large-sized extrusion gearbox reduction gearbox was operated smoothly after being put into operation again. According to the person in charge of the company, the large-scale extrusion granulating unit imported from Japan Steel before 2005 had problems with the lack of steel in the deceleration box and improper design of the bearing, and there were many deceleration boxes in domestic manufacturers. An accident occurred. Now after years of operation, the core equipment components introduced at the time of the unit need to be replaced. However, these components are no longer available for purchase, and the spare parts import cycle is also very long. Once a problem occurs in the gear box, it will seriously affect the device production. Flexible Chain Conveyor Flexible Chain Conveyor Vitrans Automation Equipment Co.,Ltd , https://www.vitrans-automatic.com