Recently, it was learned from the Beijing Municipal Environmental Protection Bureau that Beijing will strive to implement the “Beijing V Standard†for light gasoline vehicles in September this year. This year, Beijing will take the lead in implementing the fifth-stage motor vehicle emission standards in the country. The so-called "Beijing V standard" refers to the vehicle emission standard, and the other is the oil standard. On May 31, Beijing began to implement the fifth phase oil standard in Beijing. At present, Sinopec and PetroChina have completed the replacement of Beijing V oil in advance. On the motor vehicle side, the draft of the fifth-stage emission standard for light-duty gasoline vehicles has been completed, and the light-duty gasoline vehicle “Beijing V Standard†is striving to be implemented in the city in September this year. It is understood that at present, Beijing has issued 366 environmentally friendly vehicles that meet the fifth-stage emission standards.
In the investment casting industry, steel castings are the most used castings in the manufacturing industry, and are widely used in equipment, agricultural machinery, machining, and automobile industries. Metal castings can produce parts with complex shapes, but there are also requirements for the design of the product structure. In the case of meeting the requirements of use, it should also try to comply with the casting process. For example, in the structural design, care should be taken not to have thin walls, which may easily lead to dissatisfaction with pouring or product deformation; for example, try not to have sharp corners, try to use radian transitions; and try not to appear small and deep blind holes, It will cause great trouble for foundry sand cleaning. Of course, there are many other structural problems. We will improve and optimize the product structure according to the customer's drawings without changing the customer's functional use, so as to maximize the product qualification rate and production efficiency. In some cases where the structure cannot be changed, we will also perform some follow-up processing after casting according to actual problems, so that the expected results can also be achieved.
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