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• What are the advantages and difficulties of die-casting technology for new energy vehicles?
• 6
  、Introduction to die-casting parts on automobiles

Tesla's all-in-one die-casting cost has been reduced. Why haven't other car manufacturers made similar attempts?

1. Because this is the exclusive technology of Tesla, the biggest advantage of castings in engineering is that it can greatly shorten the development time of the whole body. The traditional body structure welded by dozens of sheet metal parts is replaced by integral casting, saving design time. But there is a saying in the industry that the design is refreshing, but the process is very difficult.

2. It is a kind of attempt and experience accumulation.For traditional car companies, there is no motivation to make too much change, unless the core interests are challenged. For example, everyone is a B-class car, and Tesla's cost is half of yours.

3. Summary: Therefore, this change of Tesla Model 3 is more about controlling costs. In terms of intelligence, it can only be regarded as catching up with the times, or catching up with Tesla itself, and the lower price may be the killer of Model 3, because its competitiveness in other aspects The models of the new forces have almost no advantages.

4. Secondly, Tesla is a foreign brand. For many Chinese users, they feel that the moon abroad is rounder than the domestic one. Third, Chinese brands have gone to two extremes in new energy vehicles. One is extremely luxurious, similar to NIO, Ideal, dual motor, refrigerator, color TV, sofa, and the pile of materials is very strong, and it is difficult to reduce costs.

Is Tesla all-in-one die-casting body good?

High safety Tesla's all-in-one casting body has almost no Welding points, each surface is also absolutely reliable connection, which makes the overall structure of the vehicle have high strength. Compared with the traditional welded body, Tesla's all-in-one cast body is safer and can better protect the occupant during the actual collision.

As for the safety factor, there is no data showing that the body quality of die-cast cars is worse than that of stamped cars, and in the crash test, the safety factor of Tesla cars has not been significantly reduced. Volkswagen's safety concerns mainly about its battery rather than the die-cast body.

This is also in lit with Tesla's intention to reduce the cost of car manufacturing. It is also worth mentioning that the integrated die-casting process can not only greatly reduce the working hours and costs of production, but also is more conducive to creating a lightweight effect on vehicles. Among them, the rear bottom plate of ModelY will be 10-20kg lighter than that of Model3, and the battery chassis is also quite lightweight.

So that the car is more smooth and economical when driving. At the same time, integrated die-casting technology also helps to reduce the weight of the body battery and improve the performance and endurance of the car.The development of Tesla's integrated die-casting technology will greatly promote the progress of the automobile manufacturing industry and become one of the important directions for the future development of automobiles.

How about new energy die-casting parts

1. Lightweight Make full use of the low-density characteristics of aluminum alloy on large-size structural parts, which is expected to greatly reduce the body weight. Efficiency improvement and cost reduction: Through one die-casting molding, the number of production lines of parts is greatly reduced, and the welding process is reduced, thus shortening the production cycle.

2. Extreme krypton integrated die-casting has an imitation oil and waterway design, which improves the mechanical performance of casting products by 25%. Jikrypton applies the new mold core surface treatment technology, and the surface strength of the mold is improved by 30%, so that the core block is resistant to high temperature and wash.Up to 2 times the service life, especially for the corner processing of die-casting parts, Extreme Krypton is higher than Tesla in terms of component performance and stability.

3. For example, Tesla, the global leader in new energy vehicles, announced in September 2020 that Model Y will adopt an all-in-one die-casting post-floor assembly to die-cast the original assembly through parts stamping and welding, which can reduce 79 parts and reduce manufacturing costs by 40%. .

Automotive Integrated Die-casting Structural Parts Molding Technology Course

Integrated die-casting refers to the integration of body parts, that is, multiple separate and scattered small parts in the original design are highly integrated and reused. The large die-casting machine is molded once, and the welding process is omitted to directly obtain a complete large part.

The major of automobile manufacturing and testing mainly studies automobile structural design, automobile assembly technology, automobile engine principle and maintenance, automobile transmission system design, automobile electronic technology, automobile safety technology, automobile detection and diagnosis technology, automobile manufacturing engineering, automobile materials and molding technology, and automobile standard Courses on approval and regulations, etc.

The major of automobile manufacturing and assembly technology mainly learns the manufacturing, operation, maintenance and technical management ability of various motor vehicles such as automobiles. Professional core courses and main practical links: mechanical drawing, basics of engineering materials and molding processes, basics of mechanical design, basics of electrical and electronics, etc.

And the body of the integrated process is applied, the overall mechanical energy is consistent, the structural strength is significantly improved, and sufficient safety can be maintained in the event of accidents such as violent impacts.At the same time, the integrated die-casting technology also avoids the accumulation of errors when welding a large number of parts.

Main teaching content: Automobile structure is an important professional skills course in this major, and it is an indispensable course for understanding the overall structure of automobiles.

What are the advantages and difficulties of die-casting technology for new energy vehicles?

1. Difficult to charge and slow to charge. Because new energy vehicles are not popular yet, many cities or regions lack charging piles for new energy vehicles to charge, so it is not very convenient to charge cars. In addition, the power device system of new energy vehicles is not very mature. Charging is relatively slow, and it generally takes several hours, which is not very convenient.

2. It has little pollution, is more environmentally friendly, and also greatly reduces people's travel costs.From an objective point of view, new energy vehicles are conducive to protecting the environment and will not produce too many pollutants.

3. First of all, the first advantage is the cost advantage. To put it another way, die-casting and die-casting is pressure casting. The working cycle of the die-casting machine generally starts from the mold, which is injection, return hammer, cooling, nitrogen filling, release the nozzle, open the mold, top out, top back, and finally spray, which is a cycle.

4. Most of the small parts such as general camera parts, typewriter parts, electronic calculator parts and ornaments, as well as complex parts of automobiles, locomotives, airplanes and other means of transportation are made by die-casting. Advantages of die-casting: The advantages of die-casting include that the casting has excellent dimensional accuracy.

5. All-in-one die-casting cars have the following advantages; the first is the time cost of production.The second is the cost of the production line. The four major processes of automobiles are stamping, welding, painting and general assembly. Under the existing production technology cost framework, except for the lower stamping cost than die-casting, other links are much higher than die-casting.

Introduction to die-casting parts on automobiles

1. Integrated die-casting refers to the integration of body parts, that is, multiple separate and scattered small parts in the original design are redesigned and highly integrated, and a large die-casting machine is reused for one molding. Omit the welding process and directly get a complete large part.

2. Alloy materials: heat-free aluminum alloy materials must be used, which has become an important technical barrier in the manufacture of large die-casting parts for automobiles.

3. Aluminum die-casting is an aluminum alloy product made by injecting aluminum liquid into the melting mold under high pressure and molding it through a die-casting machine.Its main features are high accuracy, smooth surface, and complex structure and shape processing.