2004 JPMA Awards | Japan Powder Metallurgy Association

Development of high-strength Fe-Cu-C sintered steel

Mitsubishi Materials Corporation: It was highly appraised that they developed material having the same high-strength as diffusion alloyed powder material by focusing attention to the wettability of copper and iron and adding microelement to Fe-Cu-C material, which is most popular sintered material.

Development of VTC product which unified a large sized sprocket and a housing for silent chain in VTC

Sumitomo Electric Industries, Ltd.: It was highly appraised that they created a design taking account of deformation due to induction hardening, produced a single-piece and large product with a considerable thickness gap, thereby attained inner diameter without machining. Further, it was highly appraised that they cut the cost remarkably by means of building a consistent production line.

Development of the Eccentric Oldham Ring for Scroll Compressors

Mitsubishi Materials Corporation: It was highly appraised that they modified the design of eccentric shape, of which molding is difficult, in the design-in approach and achieved mass production by means of die-out.

Development of the Cam Parts for Power Assisted Mechanism

Sumitomo Electric Industries, Ltd.: It was highly appraised that they examined the shape making use of three-dimensional CAD from the initial stage of the design phase and cultivated a new market of coupling devices.

Development of the Sub Gear for the Scissors Gear System for Automobile Engines

Sumitomo Electric Industries, Ltd.: It was highly appraised that they combined materials and processes appropriately in order to satisfy both of the required accuracy and strength, and extended the market for the scissors gear system for automobile engines, which had not been sintered so far.

The Bearing with a Self-Lubricant-Collection Mechanism

Porite Corporation: It was highly appraised that they attained a bearing of which life is as long as that of ball bearings, and achieved the expansion of application to the field of axial-flow cooling fan of the computer, which is expected to grow.

Cobalt-Free Exhaust Valve Seat Insert for Automotive Engines

Nissan Motor Co., Ltd., Hitachi Powdered Metals Co., Ltd.: It was highly appraised that they developed a valve seat insert that is used under the severe usage conditions, does not contain Co with high environmental burden, and combines the equivalent wear resistance as that of conventional material and excellent machinability.

4 mg Sintered Self-Lubricating Bearing

Porite Corporation: It was highly appraised that they developed elemental technology to mass-produce minute products for raw material, compacting and the subsequent secondary operations and achieved the extension to a field of mobile phone having a large demand.

Development of Die Wall Lubricated Automotive Engine Sprockets

Fine Sinter Co., Ltd. Toyota Motor Corporation Toyota Central R&D Labs., Inc.: It was highly appraised that they combined the warm compaction method and their original die wall lubrication method, applied it to complicated shapes, thereby established mass-production technique for high density structural parts, of which future development is extensively expected.

Development of PM Sprockets with High Contact Fatigue Strength for Silent Chain System of Automotive Engines

Hitachi Powdered Metals Co., Ltd.: It was highly appraised that they applied carbide dispersion carburized quenching and tempering processing to sintered materials, combined it with rolling on tooth flanks as a method for highly densification, thereby established production technology for high contact fatigue products.

Development of the Thin Thickness Tube Extrusion of the Powder Aluminum Alloy Sleeve

Sumitomo Electric Industries, Ltd.: It was highly appraised that they conceived lubricant improvement and increase in raw material accuracy, improved the filling method to achieve their idea, and realized mass-production by means of thin extrusion.

Effective Cost Reduction by Creating Outer Diameter Cutting Surface R-chamfer on Both Sides of the Base Valve Case by Using the Press Machine

Fine Sinter Co., Ltd.: It was highly appraised that they reduced cost by applying greatly versatile processing, eliminating the machining process, for parts having a very large production volume.

Mass Production of Bearings for DC Brushless Fan Motor

Hitachi Powdered Metals Co., Ltd.: It was highly appraised that they developed such material that satisfies the required properties by means of most optimized combination of raw materials.

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