Metal Casting Automotive Hybrid Gearbox Housing

Business Scope: CNC Machining / Sand Casting / 3D printing / Transparent Prototypes / Medical Device Prototypes / Military Prototype

Other Hot Products: The Motor Shell / Reducer Housing / Gearbox Housing / Hybrid Transmission Housing / Motor Cover / Valve Plate / Oil Pan / Fuel Cell Housing / Steering Gear Housing / Electric Cabinet / Camshaft Cover / Clutch Housing

Society could no longer tolerate the energy-consuming and pollution-causing foundry industry with impunity. Protection of resources, protection of the environment was the consensus of everyone.In 1998, the 63rd Beggar Casting Conference has begun to award beggars to the first 10 to pass the Casting Environmental Protection Award, ISO14000 Obituary Casting Award. The total level of environmental pollution in China is the most serious level in the history of developed countries, China's automotive casting industry must take the road of high efficiency, energy saving, material saving and environmental protection, take the road of green casting, there is no choice. The young Chinese automotive casting industry is still in its infancy.

China's auto casting industry is still young, even though the domestic structure and structure of more and more foundry workers are valued at a large amount, the production capacity of China's auto casting industry equipment flow, such as Saebi. In fact, the typical castings of Chinese cars, such as cylinder block, cylinder head, etc., so far, some of the auto plants have not yet achieved localization, but also rely on imported castings. The level of China's auto casting industry must be raised as soon as possible. The following are still some typical automotive castings to start, automotive casting industry for further analysis.1, The most important and complex casting in a car block is in the engine, the heart of the car. The quality of the engine's main casting is especially important to ensure that the car does not have a "heart attack." The cylinder block is the largest and most complex casting in the engine, with a wall thickness of less than 3 mm at its thinnest point, and is almost always cast in high-strength gray iron, although creeping graphite cast iron is also used. The use of aluminum alloys is increasing as automobiles become lighter, and some automakers are considering the use of magnesium alloy casting blocks. Casting methods used in the production of cylinder blocks are different for each manufacturer due to different conditions and various options for the material, such as air punch molding, isostatic molding, high pressure multi-contact molding, no-box extrusion molding, shock molding, etc. Cast aluminum cylinder blocks include low pressure casting, vanishing including the use of mold casting, extrusion molding (using cylinder sleeves pre-embedded with aluminum-based composite material), die casting (e.g., aluminum impact dollar core) and semi-solid casting. ), semi-solid casting, and sand casting (e.g., DISA molding method). Currently, for cast iron cylinder blocks, the most widely used method is still wet sand molding, especially with the advent of pre-flow fixed static pressure ring air punch molding, which better reflects the advantages of wood characteristics such as low energy consumption, low noise, low pollution, high efficiency, and highly reliable operation. Recently, foreign equipment manufacturers of molding machines continue to improve, solid, airflow gain air punch plus molding, static pressure plus molding, active multi-contact molding, extrusion molding and other improvements, sand hardness has appeared in the stamping air to be more uniform. With the development of high-power semiconductor components and computers, microelectronics, the use of electrical servo systems, rather than the usual hydraulic and pneumatic drives used in molding lines, molding lines beat, and lair operating reliability greatly improved, while obviously simplifying the hydraulic control system to ensure that its maintenance workload is also reduced. The molding line is equipped with a double-cylinder fall-off sanding machine, which allows pre-cleaning of the castings and pouring ports at the same time as the fall-off sanding. Frequent pour molding lines limit the entire line in start rate, use automatic pouring equipment. Some manufacturers use pneumatic pouring bags, pouring process contact is conducive to saving iron, quality assurance and sand box protection, pouring process with more breeding flow, some use a type of breeding without filtering combination. Cylinder bodies are the most commonly used automotive sand core castings. In addition to water jacket sand core thin and complex, according to the different requirements of each plant, respectively, using case medium box system core, hot medium box system core ring shell core system core, other sand core - including qu boom box sand core -, sand core over the cylinder barrel, case medium box system Before most of the use of the core is not to confirm the front and rear, dimensional accuracy and energy saving, case medium box is increasingly widely used. Most cores are made using the ISO CURE triethylamine curing method (a more advanced ISO MAX has been developed in the US in recent years), but the SO2 curing method also has its own advantages. The warm core box method has advantages in terms of both energy savings and the environment. It is necessary to strengthen the sealing and ventilation of the core manufacturing equipment, and it is important to develop non-toxic, non-polluting, and environmentally friendly resin binders. Sand cores should be coated to improve the internal surface quality of castings and the cleanliness of internal cavities. The use of water-based coatings in place of alcohol-based coatings is also effective in preventing pollution. Microwave drying after coating is highly efficient and energy-efficient, and improves the quality of sand cores compared to conventional gas or natural gas drying. Traditional drying makes the water vapor in sand core coating into core internal diffusion, so that the strength of sand core under Chen, microwave drying this is not a drawback. KCY-CORE process, the use of sand core in the process hole opening, so that the accuracy of the casting size can be greatly improved, the second filling cured as one or more sand core, and then the overall coating, drying for the entire combination of sand core, < 0.3mm can be sand,. This process is designed to be automated. Cylinder sand core should be very vigorously promote the reuse of core sand regeneration, to reduce core sand in the sand performance and strengthen the impact of environmental protection. Especially the use of thermal regeneration, can make quartz sand by baking stage hair and high temperature expansion rate, under Chen with such regeneration of sand to the core than new quartz sand, is very to ensure the quality of the molding, the use regeneration of sand also Chen low production costs.