After a high-efficiency and energy-saving circulating pump was put into operation in January, Qilu Petrochemical Water Supply and Drainage Plant continued to implement high-efficiency energy-saving transformation of the circulating water pump. On March 19, another energy-efficient pump after the transformation began to test. High-efficiency and energy-saving pumps are tailor-made according to the actual conditions of the water supply pipeline, and fluid correction technology is used to make the pump run at the best operating point. The energy-saving effect is obvious. The energy-efficient circulating pump that was put into operation earlier saves more than 7,000 power-savings per day. degree. This is the first time the company has used this type of energy-efficient pump. The front end of the car is fitted with bumper, which not only has decorative function, but also is a safety device that absorbs and moderates the external impact force to protect the body and the occupant.
At present, in addition to maintaining the original protection function of the car front and rear bumper, but also the pursuit of harmony and unity with the body shape, the pursuit of its own lightweight car front and rear bumper are made of plastic, people called plastic bumper.
The plastic bumper is made of plastics, mainly polyester and polypropylene, which are made by injection molding. For example, the bumper of Peugeot 405 car is made of polyester and made by reaction injection molding. Volkswagen audi 100 Golf Shanghai Santana Tianjin xiali model car bumpers, adopted polypropylene materials made from injection molding in Abroad have a called polyethylene carbon ester plastic, seeping into alloy composition, using the method of metal injection molding processing of bumper not only has high strength, rigid, also has the advantages of can welding and coating performance is good, in the amount of cars more and more.
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