Current situation and prospects of powder metallurgy gear industry in China
Chinese powder metallurgical gear is the high-tech product subsequent to little chip or no chips. Although powder metallurgy gears are hard for separating statistics in the powder metallurgy parts, it has better 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 immediate developments in powder metallurgy parts. Parted by the feature, gear belongs to the structural parts. even though the share of the structural parts possesses absolute far greater rate in the iron-based parts than further 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 further process can abundantly meet the dimensional correctness requirements. Especially toothed accuracy. Therefore, compared as soon as develop using standard 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, fine-tune gear, putting cams, bushings, plain bearings, centering sets from distressing 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 stop 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 brusque onslaught in imitation of gaps yet exist, but afterward the thesame industry abroad: (1) enterprises, small-scale economic and foreign companies amend greatly. gnashing your teeth thing following each new to keep the prices down, competition is fierce. Most enterprises nonappearance of complex support, research and evolve capabilities backward, low-grade products, it is hard to compete in imitation of foreign countries. To re-enter the nonexistence of distress. Technology and equipment services are far afield at the rear than further countries. There are tiny exports and the trade channel is poor.
With China's accession to the WTO, every the above shortcomings and weaknesses will be improved. Because after the accession to the WTO and gradual make known internationalization, the push of the silicon powder metallurgy will get the opportunity to new expand. though at the similar time, as the entry of foreign capital and technology, powder metallurgy and the perplexing level will along with add together and develop.Source:http://www.mhcmp.com
