Chinese powder metallurgical gear is the high-tech product with little chip or no chips. Although powder metallurgy gears are difficult for separating statistics in the powder metallurgy parts, it has bigger proportion than other powder metallurgy parts in the automotive and motorcycle according to the weight or number
Therefore, from the view of rising proportion of car, motorcycle the rise in the powder metallurgy parts, powder metallurgy gear has rapid developments in powder metallurgy parts. Parted by the feature, gear belongs to the structural parts. While the share of the structural parts possesses absolute far greater rate in the iron-based parts than other types of powder metallurgy parts.
Major powder metallurgy gear: a camshaft toothed pulley is commonly used in a variety of automotive engine boron powder metallurgy parts, by first forming and finishing process, no other process can fully meet the dimensional accuracy requirements. Especially toothed accuracy. Therefore, compared with manufacture using traditional machining methods, material inputs and manufacturing are greatly reduced, it is embodied powder metallurgy characteristics of typical products. Parts of the two supporting categories: car engines; camshaft, crankshaft pulley, water pump, oil pump pulley, initiative, driven gear, active, driven sprocket, the cam bearing caps, rocker arms, bushings, thrust plate, valve guides, into the exhaust valve seat auto gearbox; gear hub and components of a variety of high-speed synchronizer clutch gears, cams, cam shaft, the slider, the shift lever bushings, guide block, ring. Motorcycle three parts: the driven gear and components, sprocket, starter pawl, ratchet, star wheel, double gear, Vice gear, change gear, putting cams, bushings, plain bearings, centering sets from moving plate, intake and exhaust valve seat. Four cars, motorcycles pump: a variety of gear pumps, gear wheel, a variety of pump rotor, cam ring, automobile, motorcycle shock absorber, a variety of piston, the end of the valve seat, oriented seat a variety of compressor piston, cylinder block, cylinder head, the valve plate, sealing ring. The five agricultural products of various bushings, rotors, bearings, distributor gears, planetary gears within the gear internal gear combination, a variety of stainless steel nut, magnetic pole.
Although the powder metallurgy industry has been through nearly 10 years of rapid development following gaps still exist, but with the same industry abroad: (1) enterprises, small-scale economic and foreign companies vary greatly. Cross business with each other to keep the prices down, competition is fierce. Most enterprises lack of technical support, research and development capabilities backward, low-grade products, it is difficult to compete with foreign countries. To re-enter the lack of distress. Technology and equipment facilities are far behind than other countries’. There are little exports and the trade channel is poor.
With China's accession to the WTO, all the above shortcomings and weaknesses will be improved. Because after the accession to the WTO and gradual market internationalization, the market of the silicon powder metallurgy will get the opportunity to further expand. While at the same time, as the entry of foreign capital and technology, powder metallurgy and the technical level will also improve and develop.Source:http://www.mhcmp.com
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