Source: Snowball App, Author: stock trading to buy fish to eat, (/6762204 137/
222388558) Integral die casting refers to the high integration of multiple individual and dispersed aluminum alloy parts with a large tonnage die casting machine, and then it is molded into a 1-2 large aluminum casting again. Integral die casting can make the car body lightweight, save labor and machine costs, improve efficiency and production scale, and shorten the manufacturing and transportation time of supply chain and whole vehicle.
Advantages of integral die casting: the core advantage is low cost and high production efficiency, followed by lightweight. In terms of cost, the production cycle is short and the initial investment is small, which can greatly reduce the gluing process. Die casting waste and runner can be melted again, and the material utilization rate is over 90%, which is much higher than stamping. At the same time, it can reduce the installed capacity of the battery (replacing aluminum with steel, the cost of the battery is reduced by 6.6 times). Lightweight, low energy consumption, prolonged battery life, reduced body weight by about 20%, and reduced body production workshop area by more than 30%.
Upstream
1. alloy material: it is necessary to use aluminum alloy material without heat treatment, which has become an important technical barrier for manufacturing large automobile die castings.
Lizhong Group: One of the largest intermediate aluminum alloy manufacturers in China, the company obtained a patent for heat-free alloy materials. The developed heat-free alloy materials have realized the replacement of "aluminum instead of steel" materials for automobile parts with integral, large-scale, thin-walled and complex structure and easy deformation after heat treatment, breaking the product and technical barriers of foreign enterprises in this field.
2. Large-scale die casting machine: Die casting machine and die casting mold are the core equipment of die casting production.
Yi Zhiming: Integral die casting requires that the clamping force of the die casting machine should be at least 6000t t. At present, only Yi Zhiming is the A-share listed company that has mastered this heavy-duty die casting machine. Due to the high unit price and high entry threshold, the die casting machine may be divided into four parts in the future, Lijin (supplying Tesla), Yimi, Haitian and Buller (the first in the world).
1). At present, the company has completed 7,000 tons of internal debugging work, and reached a cooperation agreement with FAW Group on the rear end of SUV chassis 1/3 transformation. Production is expected to start in late June, and it will take about 4 months to complete the debugging.
The competition in die-casting mould industry is scattered, and there is no listed company with die-casting mould as its main business in China at present.
Mid-stream: Topp Group, an aluminum casting supplier: On February 25th, 2022, the first integrated super-large die-casting car body rear cabin based on 7200t giant die-casting machine in China was officially mass-produced, achieving the weight reduction effect of 15%-20%, and it is also the largest integrated aluminum alloy die-casting part known in the field of automobile parts. In terms of equipment, in 2002 1 year, the company signed a strategic agreement to purchase 21set of die-casting units, including 6 sets of 7,200t, 4,500t10, and 5 sets of 2000t die-casting equipment.
Wencan Co., Ltd.: Mainly engaged in research and development, production and sales of aluminum alloy precision die-casting parts for automobiles, with leading self-control ability in the industry. Its products are mainly used in engine system, gearbox system, chassis and braking system, body structure and so on. It is one of the few tier 1 in China that can supply body structural parts of main engine plants such as Mercedes-Benz, Weilai and Tesla in batches.
(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)