Abstract:
A compressor includes a housing, and an anticorrosive coating covering a surface of the housing. The anticorrosive coating includes a base layer applied on the surface of the housing, and a surface layer applied on the base layer. Both the base layer and the surface layer are organic coatings. Thus, the housing of the compressor is effectively separated from the external environment by means of the two organic coatings, so as to ensure that the compressor is not corroded; moreover, the anticorrosive coating does not contain a metal coating, thereby preventing the problem of the compressor being severely corroded due to an exposed metal coating.
Abstract:
A scroll compressor includes scroll members that are made of austempered grey iron in whole or in part. The austempering process can increases fatigue strength and toughness of a grey iron while maintaining its good machinability and vibration damping characteristics. Use of austempered grey iron scroll members allows the scroll compressor to improve its capacity, efficiency, and durability.
Abstract:
Disclosed is an air compressor (10) for supplying compressed air to a pneumatic system in a motor vehicle. The air compressor (10) comprises a crankcase (46), a cylinder housing (14) connected to the crankcase, a cylinder head (20), a crankshaft (40) rotatably mounted in the crankcase, a cylindrical piston (12) that is connected to the crankshaft (40) by a connecting rod (42). In order to load the compressed air with as little heat as possible, the crankcase (46), the cylinder housing (14), the cylinder head (20), and the piston (12) are made of aluminum or an aluminum alloy, and the at least one piston ring (54) or the at least one oil ring is made of gray cast iron or polytetrafluoroethylene (PTFE).
Abstract:
A cylinder liner for an engine block assembly of an internal combustion engine is provided. The cylinder liner includes a liner member formed of cast iron and presenting an outer surface. A first portion of the outer surface of the liner member is machined to a reduced outside diameter. An aluminum-based material is then thermally sprayed onto the machined first portion, while a second portion of the outer surface remains uncoated. The coated cylinder liner is then placed in a mold, and another aluminum-based material is cast around the coated cylinder liner to form the engine block assembly. During the casting process, the two aluminum-based materials form a strong intermetallic bond between the liner member and the engine block.
Abstract:
A cylinder liner for an engine block assembly of an internal combustion engine is provided. The cylinder liner includes a liner member formed of cast iron and presenting an outer surface. A first portion of the outer surface of the liner member is machined to a reduced outside diameter. A material including aluminum is then thermally sprayed onto the machined first portion, while a second portion of the outer surface remains uncoated. The coated cylinder liner is then placed in a mold, and another material including aluminum is cast around the coated cylinder liner to form the engine block assembly. During the casting process, the two aluminum-containing materials form a strong intermetallic bond between the liner member and the engine block.
Abstract:
A vane pump is provided that may include a rotor having a plurality of slots formed on an outer circumferential surface thereof; a vane slidably inserted into each of the plurality of slots; and a cam ring configured to receive the rotor therein and having a inner circumferential surface in contact with an end portion of the vane. The rotor may be formed of nodular graphite cast iron, the vane may be formed of high speed tool steel, and the cam ring may be formed of alloy cast iron.
Abstract:
Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.
Abstract:
Scrolls made from one or more near-net shaped powder metal processes either wholly or fabricated together from sections. Both “conventional” press and sinter methods and metal injection molding methods will be described.
Abstract:
A component for wind turbines includes cast austempered ductile iron containing about 3.0 to about 3.8 weight percent carbon, about 1.9 to about 2.8 weight percent silicon, up to about 0.3 weight percent manganese, up to about 0.8 weight percent copper, up to about 2.0 weight percent nickel, up to about 0.3 weight percent molybdenum, about 0.03 to about 0.06 weight percent magnesium, less than about 0.05 weight percent chromium, less than about 0.02 weight percent vanadium, and less than about 0.01 weight percent sulfur. The component is preferably a drive shaft or gearbox component having a mass of more than about 3 tons. A method of manufacturing the component is also provided.
Abstract:
A compression mechanism is configured to be used in a scroll compressor. The compression mechanism includes a fixed scroll and a movable scroll. One of the fixed scroll and the movable scroll is a cast iron molding fabricated through semi-molten die casting, and the other of the fixed scroll and the movable scroll is a grey iron casting.