Automotive and Special Casting and Nonferrous Alloys

The future will create technology. Accurate forming casting technology will be selected in 1 of the Nirvana. High-Performance High-Performance 5 Efficiency Kunming 3 Knowledge 2171; Scoop Efforts Since the Wish Project is becoming a product and related manufacturing, 7. Integration of the system method to set the scrape attached. The potential for rape =, art +4 is intended to be. , Postmaster Mongolian Arts full text, page 12 Liu Baicheng academician brief introduction Liu Baicheng Chinese engineering, scholar. Professor, Department of Mechanical Engineering, Tsinghua University. In 1955 graduated from Tsinghua University Department of Mechanical Engineering. Won the gold medal, from 1978 to 1981 as a visiting scholar to the University of Wisconsin and Paralympic Institute of Technology. , More than 200 articles were published by Zhongying 8. Yu Yu was selected by 9. and more than 60 records were submitted earlier in the country. The use of computer technology to transform the traditional poetry industry has opened up multi-disciplinary macroscopic and microscopic research on carpet simulation. Will make Wei. Has won the Ministry of Education Ministry of Science and Technology Progress Base Sleeve Class Award 2 Ministry of Science and Technology Progress Award 3 items. 4 awards, 2 foreign awards and 2 national invention patents.

In 193 years, the excellent and extravagant teaching achievements of the tertiary universities in Beijing were invited to the 24 universities in the United States, including MIT, Long Xue, and other countries. 7 In the International Wood Conference Metaphor II, Yu, Automotive and Special Casting and Nonferrous Alloys, China Liu Li, deputy chief engineer of the Liuqi Group, wrote a letter to him to make him a better person, to increase the trend, and to find typical steam castings such as cylinder cylinders. Change the box. Into the four different bamboo. Exhaust manifold. Buckle cam and. Stick. 1 wheel, special casting technology should be applied to the status quo and development, Fiji trend, `Qi Wenmu period No. 1314 Bezo Zhaoxin Director of the Director Zhao Lixin was born on 23rd, 1942. In 15 years, he graduated from Dalian Institute of Technology with a professional in process and equipment. Graduation film is directly engaged in the casting technology and management work in the sixth gas car manufacturing plant. He is now the deputy chief engineer of China First Gas Vehicle Group Company. Researcher Gao, an engineer, concurrently chairman of the foundry branch of China Mechanical Engineering Society, vice chairman of the China Prisoners Association. Honorary editorial board of the Special Enforcement and Color Printing Magazine, etc., since 1981. About ten times went to Europe, the United States and Japan to inspect Tao’s techniques. And attended the 60th. The 61st session of the 62,6364 World Taoist Conference was concerned about the automotive foundry industry and was published. New! igiimotiveFoumli.y.iii ChiiialiiC delivered the Chinese automotive foundry industry, etc. In 1994, he received the mechanical industry scientific and technical expert certificate.

Automobile Industry and Special Casting and Non-ferrous Alloys Deputy Chief Engineer of China Sixth Gas Vehicle Group Co., Ltd. Zhao Lixin Cheng Quanfei Fei Tengfei, Zeng Zhongxuan Bibian, division, column No. 4 Fei Liyou deduction, 100 million small.悄 悄 祜 祜 祜 侦 侦 侦 侦 炳 炳 炳 1 的 , 炳 炳 炳 炳 1 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车 汽车The development of the automotive industry, the heart of training to stimulate the casting industry, the important real flash. According to incomplete statistics, the output of automobile iron castings in China is about 80,000 cars. The output of aluminum castings is about 80,000. To implement a sustainable development strategy, we must make the car reach the goal of energy conservation and environmental protection. In order to achieve this goal, it is an important measure to reduce the weight of the car. For every 100 car weight reductions, every 100 cars can save 0.3 bar of gasoline and reduce the car's weight by 10 per car. In order to reduce the weight of the car, it is required to reduce the weight and precision of automotive castings. Therefore, the car's cast iron parts are continuously replaced by small-quality cast aluminum parts. In the past 10 years, the number of automotive aluminum castings in the United States has increased. Each year, 55ks and 2 (1) years, the application of magnesium alloy castings with a 98ks density smaller than that of aluminum alloys in cars has become even more significant. In recent years, magnesium has become more and more significant. The application of castings has increased at the speed of column 20. In 1998, the automobile magnesium alloys in the United States were produced with an annual output of up to 13,000. 2 Some typical automotive castings 2.1 Special castings 2.1 The most important and complex castings on automobiles are located on the heart engines of automobiles. . In order to prevent the car from having a heart attack, the quality of the main cast 1 on the engine is important. The cylinder life will be the most complex castings on the engine. The thinnest wall thickness is often less than 31. Magnesium alloy casting cylinder. The casting method used to produce the cylinders varies depending on the material. There are various options for different plant conditions. For cast aluminum cylinders, low-pressure castings are used for lost casting, precast cylinders for ram-based composites for extrusion casting, and resistances for die casting. Aluminum liquid impact oil sand core, etc. and semi-solid casting, etc. also used sand casting 2.2 cylinder head cylinder head is also a complex and critical casting on the car, the engine's combustion inlet was imported. The most widely used cylinder head material is sheet metal. The magnesium alloy cylinder head is also used. There are many methods for casting the cylinder head, such as sand casting metal gravity casting low pressure casting.

Lost foam casting uses sand cores and semi-solid castings. Metal gravity die castings are used as an example. The shape of the cylinder head is formed by a metal type, and a computer can automatically control the temperature of the metal type.

Part of the inner cavity is formed by the sand core. The manufacturing process of the sand core is basically the same as the core making process of the aforementioned cylinder. The main difference is that the core sand binder and the sand core coating are different.

The wrong alloy melting can be used in the reverberatory furnace, but the oxidation and inhalation are serious. It is difficult to control the burning temperature and waste energy to pollute the environment. When using an induction furnace, aluminum water in the furnace 1 facilitates homogenization of the components. However, the magnetic field of the induction furnace interferes with the pyrometer, and the maintenance of the induction furnace is difficult. The widely used continuous high-efficiency gas furnace can realize the preheating of the charge and the continuous melting of the components. The temperature control is precisely controlled and energy conservation is suitable for mass production. Should pay attention to the charge to be clean, in addition to the use of aluminum refining method, the wrong six gold flux can be used to introduce the processing device to make the metamorphic fine grain refinement steps to complete. The traditional injection method of the cylinder head is a bottom-injection type, which facilitates the cooperation of the aluminum liquid and facilitates the formation of sequential solidification, thereby significantly improving the compactness of the casting. During the pouring process, the exhaust gas of the cast bar is to be passed through, the shirt is used automatically, and the note includes a stand-alone double-cylinder type and an in-line multi-cylinder type. The multi-station turntable type pouring machine is suitable for mass production, and it seems to be a large investment. Multi-unit rotary casting machine is less investment. When using long-lasting metamorphic agents, the use of quantitative insulation rapping furnaces is more effective. The on-site inspection of the quality of liquid aluminum mostly uses a hydrogen meter and a direct reading spectrometer. The maintenance of metal molds is important. It can be used to periodically remove the scales by spraying small particles of dry ice. This method is simple and convenient and does not pollute the environment.

After the rafting, the aluminum cylinder head casting saws the plane of pouring and cutting at the cleaning line. After the leakage test, the IIJ is sent to the user after the roughing and washing processing positioning points, and the manufacturers of the low casting cover are also used. Compared with the shirt, the electromagnetic pump low pressure casting process can improve the metallurgical structure and mechanical properties of the casting material.

2.3 The gearbox housing has been changed, and the body cast material for the gray cast iron is also being used with creeping cast iron alloys. The die casting process is used. To improve the die casting quality test. Can be called low-speed card filling permit card cast dual card shot punch card casting vacuum die casting oxygen die casting and so on. The casting and dispensing of spray paint in die-casting production are all dynamic. In addition, the on-line detection device for correcting the forming conditions of the die casting machine and the casting is changed and the alloying and refining of the aluminum alloy used in the three-dimensional configuration and the aforementioned aluminum cylinder cover base wood phase 4 laser parameters have a great influence on the blowhole porosity of the die casting. Must be properly adjusted. With the closed shot end time control system, flashless die casting can be realized. The quality of the die castings can be tested. The ductility of the die-casting materials and the properties of the light inspection ultrasonic testing are very important to prevent the card from being cracked and cracked. It is important to change the working condition of the shuttle and to use the magnesium die casting. Vacuum metal type. The recently developed semi-solid magnesium alloy injection molding technology allows the magnesium alloy to be filled smoothly. Non-turbulent flow prevents gas entrapment and avoids alloy-cast reaction. It is a composite process of injection molding and jade molding.

2.4 Intake Manifold Intake Manifold + regular cross-section of the intake manifold cavity shape in the foundry industry, and in recent years the development of engine electronic injection technology has made the intake manifold more complex. Therefore, many manufacturers choose the lost foam process as the casting method of the intake manifold. Of course, the intake manifolds for vehicles are mostly gray cast iron, and sand casting is commonly used. The car’s intake manifold is made of aluminum alloy. The casting methods used include lost foam casting metal gravity casting, and die casting sand cores that use the lost foam casting process to cast the wrong intake manifold. The melting and refining process In the foregoing article, the beryllium alloy melting and refining machine of the cylinder head adopts small-grained beads to ensure pre-foaming and molding. The gluing of Chengba tablets must be carried out according to the process regulations. Assembling the lost foam mold to eliminate the pyrolysis product of the mold during pouring is very important for the filling rate of the aluminum liquid and the quality of the lost foam casting. After the paint is dried, the pattern is filled with dry sand and can be cast after being shaken. The lost foam intake manifold castings obtained shall be checked for leaks after removing the pouring openings. If there is any leakage, infiltration and leakage may be carried out according to the contract.

2.5 Exhaust Manifold Due to the higher exhaust temperatures of automotive engines, the shape is more complex 2.6 crankshaft. Camshaft Crankshaft The camshaft is a typical automobile shaft casting. It is a heavy-section automotive casting that requires both high fatigue resistance and high-speed rotary motion on the surface of the friction pair.

The modeling method used, in addition to the sand bar casting method, uses a shell type that includes a lot of iron-based sand casting. There are also self-hardening sand molding and lost foam casting.

2.7 Piston The top of the piston is the part of the engine's combustion chamber. The cylindrical surface of the piston rests on the inner wall of the cylinder through the piston ring. The speed of the reciprocating piston forms a key automobile casting for engine power. Its village quality is aluminum alloy. Including fiber reinforced composite aluminum Taiwan gold. Casting methods include metal-type gravity casting, low-lying casting, squeeze casting and semi-solid casting. 2.8 Wheel hub The hub is a rotary motion type automobile casting, and the material of the wheel hub of the sedan is gold. There are several casting methods Low Jade Casting Squeeze Le Casting Screed Rotary Vertical Squeeze Card Metal Repel Gravity Casting Differential Pressure Casting and Semi-Solid Casting Of course, many types of castings on the car are not listed. In recent years, many kinds of car castings have begun to use magnesium alloys to meet the requirements of automotive lightweighting. These magnesium alloy castings include a clutch housing, a tank cover, a gearbox cover, an engine, a steering wheel, a seat support frame, and even a cylinder head and a cylinder block.

1 Zhao Lixin. China's automobile casting industry at the turn of the century. Founding, 1999 Supplement 18, 25 2 Su Huachin. Semi-solid casting development prospects. Special Casting and Nonferrous Alloy 1998525