Secondary Operations A wide range of additional operations or treatments can be carried out on the parts after they have been sintered. Below table shows Secondary Processes for various Parts: Process Suitable for Aims Heat Treatment Quench & Temper Operation Steam Treatment Ferrous Structural Parts To improve: Strength Hardness Corrosion Wear Resistance Oil Impregnation Resin & Painting Bearings Structural Parts Self-lubricating Improve Machinability Surface for Plating Repressing Coining Sizing All Parts Dimension Control Densification Size Control Machining Milling Turning Drilling & Tapping All Parts To Improve Tolerances Form Undercuts and Slots To Install Assembly Screws Improve Surface Finishing Tumbling Barrelling & Deburring All Parts Remove Sharp Edges Improve Surface Finishing

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