The reporter learned from the Daimler Group that Shenzhen BYD Daimler New Technology Co., Ltd., a 50:50 joint venture capital injection between Daimler AG and BYD Co., Ltd., passed a government agency review yesterday and obtained Shenzhen City. Market Authority issued business license. It is understood that since the signing of the memorandum of understanding on cooperation between the two sides in Beijing on May 27 last year, at the R&D center in Shenzhen, the teams of engineers, designers, and other experts from China and Germany have already begun close cooperation to create a brand new brand for China. Electric vehicle brand. According to an insider from BYD, at the beginning of December last year, the joint design team of BYD and Daimler had already determined the shape design for the first electric vehicle jointly developed by the two companies and handed the design proposal to the engineering team to complete the development of the car. . In the future, Daimler and BYD will jointly launch a new brand. The first electric car is planned to be launched in 2013. What is a crankshaft? Isuzu Truck Engine Crankshaft,Diesel Engine Crankshaft For Mitsubishi,Mitsubishi Diesel Engine Crankshaft,14B Crankshaft For Toyota Engine 1D auto parts , https://www.1dauto.com
The crankshaft is the most important part of an engine.
1. It takes the force from the connecting rod and converts it into torque through the crankshaft output and drives the other accessories on the engine to work.
The crankshaft is affected by centrifugal force of rotating mass, periodic gas inertia force and reciprocating inertia force, which makes the crankshaft bear the action of bending and torsional load.
2. Therefore, the crankshaft is required to have sufficient strength and stiffness, and the journal surface should be wear-resistant, uniform and balanced.
Several casting techniques are used in the crankshaft production process:
1.Smelting
Obtaining high temperature and low sulfur pure hot metal is the key to producing high quality ductile iron. Domestic production equipment is mainly based on cupola, and hot metal is not pre-desulfurization treatment; This is followed by less high purity pig iron and poor coke quality. Molten iron is melted in cupola, desulfurized outside the furnace, and then heated and adjusted in induction furnace.
2.moulding
The air impact molding process is obviously superior to the clay sand molding process, and can obtain high-precision crankshaft castings. The sand mold produced by this process has the characteristics of no rebound deformation, which is especially important for the multi-throw crankshaft.
3.Electroslag casting
Electroslag remelting technology is applied to the production of crankshaft, so that the performance of cast crankshaft may be comparable to that of forged crankshaft. And has the characteristics of fast development cycle, high metal utilization rate, simple equipment, superior product performance and so on.