Die casting(aluminium die casting) is a metal casting process that is characterized by forcing molten metal under high pressure into a mold cavity. The mold cavity is created using two hardened tool steel dies which have been machined into shape and work similarly to an injection mold during the process. Most die castings are made from non-ferrous metals, specifically zinc, copper, aluminium, magnesium, lead, pewter and tin based alloys. Depending on the type of metal being cast, a hot- or cold-chamber machine is used.
The casting equipment and the metal dies represent large capital costs and this tends to limit the process to high volume production. Manufacture of parts using die casting is relatively simple, involving only four main steps, which keeps the incremental cost per item low. It is especially suited for a large quantity of small to medium-sized castings, which is why die casting produces more castings than any other casting process.[1] Die castings are characterized by a very good surface finish (by casting standards) and dimensional consistency. Aluminum Die Casting, Die Casting Components, Pneumatic Zinc Die Casting, Zin Die Casting,Aluminium Die Casting NINGBO BRANDO HARDWARE CO.,LTD , https://www.brandopneumatic.com
The propeller shaft has a total length of 12 meters, a shaft diameter of nearly 1 meter and a weight of about 68 tons. As an important component of the power transmission of container ships, the manufacture of propeller shafts must not only ensure excellent propulsion performance, but also have good resistance to cavitation corrosion. It must also be perfectly matched with the main engine hull to achieve the ship's oars. Under the conditions of super large and super heavy parts processing and relatively limited machine tools, Wuhan Heavy Industry has stepped up research and development, carefully organized production, and completed the task in accordance with customer requirements. It has been fully recognized and affirmed by customers.
Two variants are pore-free die casting, which is used to eliminate gas porosity defects; and direct injection die casting, which is used with zinc castings to reduce scrap and increase yield.
Recently, Wuhan Heavy Industry Casting & Forging Co., Ltd. successfully produced 8800 boxes of container ship propeller shafts for Jiangsu New Era Shipbuilding Co., Ltd. and passed the inspection of GL Classification Society. This is the largest marine propeller shaft delivered by Wuhan Heavy Industry to date, laying a solid foundation for the company to expand into the high-end marine field.