Casting Technology Of Crankshaft
Mar 05, 2023| melting
Obtaining high temperature and low sulfur pure molten iron is the key to producing high-quality ductile iron. Domestic production equipment mainly consists of cupola, and hot metal is not subject to pre desulfurization treatment; Secondly, there is less high-purity pig iron and poor coke quality. The molten iron is melted in a cupola, desulfurized outside the furnace, and then heated and adjusted in an induction furnace. Vacuum direct reading spectrometers have been widely used to detect the composition of molten iron in China.
modelling
The air impact molding process is significantly superior to the clay sand molding process, which can obtain high-precision crankshaft castings. The sand mold produced by this process has the characteristics of no rebound deformation, which is particularly important for multi crank crankshafts. Some crankshaft manufacturers in China have introduced the air impact molding process from Germany, Italy, Spain, and other countries, but only a few manufacturers have introduced the entire production line.
Electroslag casting
The application of electroslag remelting technology to the production of crankshafts makes it possible to compare the performance of cast crankshafts with that of forging. It has the characteristics of fast research and development cycle, high metal utilization rate, simple equipment, and superior product performance.