Automobile industry application of magnesium alloy

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Magnesium is a new type of light in 20th century developed corrosion resistant metal materials, the application of magnesium is concentrated in the magnesium alloy, aluminum alloy production, steelmaking desulfurization, aviation military four areas, are widely used in automobile manufacturing, light industry, metallurgy industry, chemical industry, electronic industry and meter manufacturing, etc.

Excellent performance of magnesium alloy with beautiful posture by the computer, household appliances, mobile phone manufacturers.

Automobile industry application of magnesium alloy has high strength, heat resistance, abrasion resistance, and the advantages of light weight, make its gradually take the place of cars in the automobile industry of plastic products and the proportion of large steel components, mainly to replace the original engine, steering wheel, seat base and so on.

The United States, for example, gm's "Polaris V - 8" engines have 15 pounds (6.8 kg) of magnesium die casting parts, and the engine assembly in Cadillac cars, the company annual production of 25000 ~ 30000 in the mid - 90 - this kind of car, one requires magnesium, gm's annual output has remained at more than 9 million vehicles, Japan's Toyota car production with gm, only for the two companies for the demand of magnesium alloy is enough to make metal magnesium production enterprise with excitement.

Q: Y represents the metallurgical (Yejin) Department standard. W stands for universal (Wanneng) alloy: Ha ha, I'm good at that!HC is the sign of the attractive magnetic force of the alloy, and HRA is the sign of hardness. COM is the cobalt magnetic mark of the alloy. D is the density of the alloy. The general quality certificate of the alloy product will have three indexes above

Q: What does carbide wet grinding mean?: 3. shape of the grinding bodyThe grinding body can be spherical or cylindrical. Our country generally adopts the spherical shape, which is easy to roll because of its spherical shape and has high efficiency, and can make the most effective use of the surface of the grinding body, and the abrasion is even, and the manufacture is easy.4. ball material ratioBall to material ratio refers to the ball to material weight ratio, the ball to material ratio is greater, the ball and material contact area is greater, the grinding efficiency is higher.Experiments show that in a certain range, improve the ball material can not only improve the grinding efficiency ratio, change the performance of mixture, and can obtain the structure of hard alloy structure and good performance, but the ball ratio can not be too large.5. solid-liquid ratioThe solid-liquid ratio is the ratio of the weight of the mixture to the volume of the liquid medium. Usually expressed as a volume of liquid added to a kilogram of material. But the solid-liquid ratio of slurry is suitable, and the grinding efficiency has the best value!

Q: Explain from the materialGeneral modelIf you buy itWhat parameters are provided?: Tungsten is on the hard alloy with tungsten carbide as the main (academic called tungsten based alloys), we called the daily hard alloy is usually tungsten based alloys, namely tungsten steel.

Q: Use of waste cemented carbide: Two, crushing methodFor hard alloy containing drilling is not high, because the hardness is relatively low, can use manual or mechanical means broken to a certain fineness in wet grinding mill for a period of time, to reach a certain size for reproduction of hard alloy. This force is a method has the advantages of simple process, short process, low energy consumption, no pollution to the environment, but often in the manual crushing hard alloy, metallic materials due to debris into the tools have broken material pollution, in addition, due to the hard alloy drill containing high amount of easily broken, mechanical crushing method is very limited; cemented carbide complex material by this method is also very difficult to ensure the quality of recycled products. Process method: artificial crushing is broken, crushed into powder 200 mesh or using bulk of hard alloy ball mill for crushing strikes the ball, then add in the bjm alcohol in wet grinding, and then enter the remanufacturing process of hard alloy.Some companies use cooling method: first crushing waste hard alloy in a muffle furnace heated to 80 above this immediately into the water quench, resulting in hard alloy cracking, and then enter the mechanical crushing process. This force is a method in the last century in 90s in Hebei Province Qinghe to gain popularity, there were dozens of county size ranging from recycling plant using the recycled and processed hard alloy, hard alloy processed over a thousand tons of annual production, the total output value of 300 million yuan, becoming one of the local pillar industry. At present, there is still a certain space for development of the crushing method, and the crushing method still needs to be improved by adopting more advanced and clean crushing equipment or by means of the force method which does not destroy the microstructure of cemented carbide with high efficiency.

Q: Carbide saw blades, plain and alternating teeth. What do you mean? That good?: Kunshan Feng rui1 tool company to provide technical information:The whole tooth tooth alternately around the turn, is used in the wood. The ladder tooth, generally used for cutting aluminum. So choose what kind of tooth shape is based on what cutting material to choose, and not good or bad points.How to choose the profile of alloy saw bladeThe tooth shape of a commonly used alloy saw blade tooth (alternate teeth), flat teeth, ladder flat teeth (low gear), trapezoidal teeth (inverted conical teeth), dovetail teeth (Tuo Fengchi), and industrial grade does not see more of the three left and right, left and right flat teeth etc.

Q: Make cutting dosage: YT for steel, steel castings, aluminum parts, not shock resistance. YG is used for rough cast iron parts, cast iron parts, shock resistance and high temperature resistance.

Q: What are the differences in performance between cemented carbide cutting tools and PCD cutters (polycrystalline diamond)?: The former is cut by ordinary metal materials, the latter is used for cutting superhard materials

Q: Import all carbide drill bit, mainly those brands: Good (maford), Kenna, Thomas, di tex, Sandvik, guhring general in the domestic production, the performance of discount.Now on the market is generally a bit alloy steel material whole bit, although the materials are the same, but due to the processing technology, various brands of product quality disparity. Imported and domestic alloy drills are also very different.Imported alloy bit usually adopts VHM micro grain hard alloy (ISO K40), the type of ultrafine particles (0.6 m) in the application of high performance drill and ordinary milling machine, the hardness and toughness of the ideal together.Take high quality alloy bit surface coating, such as chromium aluminum nitride (AlCrN) coating, the coating layer of coating, the thickness of 4 m, the micro hardness is up to 3200HV, the friction coefficient of 0.35, thermal stability up to 1100 degrees celsius. After coating, the drill color is bluish gray.After coating, the alloy drill can process low alloy steel and high strength steel. High steel can reach 54HRC.

Q: Printing requirements for cemented carbide: Its disadvantages are: there are a small amount of pores and defects in the product, and the carbon content of the sinter will decrease.Hot isostatic pressing sintering in sintering with inert gas, liquid metal or solid particles as pressure transfer medium in each direction of the sintered body exert equal pressure, not even this can overcome ordinary hot pressing pressure is not uniform and the resulting product performance. The hot isostatic pressing of cemented carbide can eliminate the pores in the alloy and the drilling pool after sintering, and restrain the growth of WC grain. The Kennametal Inc installed the first heating chamber for 277mm * 1270mm in 1967. The temperature is up to 1500oC and the pressure can reach140MPa's hot isostatic pressing machine has taken the lead in successfully applying the technology of hot isostatic pressing to the production of cemented carbide. Since then, hot isostatic pressing technology has developed rapidly in foreign countries (especially in the United States).

Q: What are the types, codes, and range of application of cemented carbides?: Many domestic brands, mainly diamond brand based, and now there are many new brands, YS/YL/YW/YG10X/YG6X/ many, if you need, I send a detailed table to you!

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