Shenzhen Greelife Technology Co., Limited  

Product Name: Automatic Power Transmission Gear Reducer Planetary Gearbox Speed Reduction for Gear Motors Model NO.: Gear box Type: Planetary Gear Reducer Step: Four-Step Gear Shape: Cylindrical Gear Layout: Coaxial Installation: Vertical Type Hardness: Hardened Tooth Surface Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car Transport Package: Poly Bag, Carton Specification: custom made Origin: China Product Description We are a precision planetary reducer gearboxes manufacturer for electricmotors ,electric machine,electric machinery.We supply variety custom made gear box and gears for power transmission through powder metallurgy process .Powder metallurgy(PM) is a term covering a wide range of ways in which materials or components are made from metal powders. PM processes can avoid, or greatly reduce, the need to use metal removal processes, thereby drastically reducing yield losses in manufacture and often resulting in lower costs.The powder metallurgy press andsinterprocess generally consists of three basic steps: powder blending (pulverisation), die compaction, and sintering. Compaction is generally performed at room temperature, and the elevated-temperature process of sintering is usually conducted at atmospheric pressure and under carefully controlled atmosphere composition. Optional secondary processing such ascoiningorheat treatmentoften follows to obtain special properties or enhanced precision.Mixing of powdersThis can often involve the introduction of alloying additions in elemental powder form or the incorporation of a pressing lubricant.Forming of the mixed powder into a compactThe dominant consolidation process involves pressing in a rigid toolset, comprising a die, punches and, possibly, mandrels or core rods. However, there are several other consolidation processes that are used in niche applications.Sintering of the compact to enhance integrity and strengthThis process step involves heating of the material, usually in a protective atmosphere, to a temperature that is below the melting point of the major constituent. In some cases, a minor constituent can form a liquid phase at sintering temperature; such cases are described as liquid phase sintering. The mechanisms involved in solid phase and liquid phase sintering are discussed briefly in a later section.Secondary operationsThe application of finishing processes to the sintered part. In the Powder metallurgy industry, such processes are often referred to as secondary operations.Powder metallurgy (PM)Typical workpiece materialsWorkpiece materialDensity (grams/cc)Yield strength (psi)Tensile strength (psi)Hardness (HRC)Iron5.2 to 7.05.1*103to 2.3*1047.3*103to 2.9*10440 to 70Low alloy steel6.3 to 7.41.5*104to 2.9*1042.00*104to 4.4*10460 to 100Alloyed steel6.8 to 7.42.6*104to 8.4*1042.9*104to 9.4*10460 and upStainless steel6.3 to 7.63.6*104to 7.3*1044.4*104to 8.7*10460 and upBronze5.5 to 7.51.1*104to 2.9*1041.5*104to 4.4*10450 to 70Brass7.0 to 7.91.1*104to 2.9*1041.6*104to 3.5*10460SpecificationProduct namePowder metallurgy precision planetary gearboxes for machinesmaterialmetal alloy, Iron , stainless steel , brassprocessmetal injection molding , powder metallurgySurface treatmentPolishing , plating ,sand blasting , PVD , coatingTolerance±0.3%Drawing formatDWG ,IGS , STPDelivery time30 days for mass productionGearbox dimension: 4mm , 6mm , 8mm , 12mm , 18mm , 22mm , 28mmDC gear motor : 3V , 12V , 24VMicor gear boxSintered metal gearbox factory