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Hitachi Powdered Metals

Hitachi Chemical

Technical Report(2003)

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Technical Report(2003)

Cover Photo
Sintered parts for valve timing control system
The photo shows the sintered parts used in a variable valve timing control system for a motor vehicle engine. (The units are by courtesy of Hitachi Unisia.)
As one of the measures to realize more environmentally friendly motor vehicles, a move is being promoted for making the valve timing variable in accordance with the rotational speed.
One of the major component parts for this mechanism is a body vane sprocket. Its mass production model is featured with various new technologies: the vane and its boss are formed in near net shape; the sprocket section for a silent chain is highly resistant to contact pressure; and the sprocket is integrated with a thin-wall body for reducing the number of parts.

Preface

Preface
  Page Size
Preface(PDF format)
Professor Ryuzo Watanabe
 1 (195kbytes)

Review

Review
  Page Size
Technological Transition of Oil-impregnated Sintered Bearings(PDF format)
Hideo Shikata
 3 (1304kbytes)

Research Report

Research Report
  Page Size
Research on Fe-Ni-Cu-Mo-C-based High-strength Sintered Steel Produced Without Quenching Process
Tadayuki Tsutsui, Kei Ishii
 12 (1,324kbytes)
Development of Co- and Pb-free Exhaust Valve Seat Insert Material
Hideaki Kawata, Hiroki Fujitsuka
 18 (870kbytes)
Research on Initial Running-in Property of Cu-Sn Oil-impregnated Sintered Bearings
Dr. Motohiro Miyasaka, Hiroshi Satoh, Minoru Mashiko
 25 (3,915kbytes)
Properties of Sintered Materials Produced by Densification Process Combining Warm Compaction and Die Wall Lubrication
Shigeyuki Saitoh, Makoto Iwakiri, Tsuyoshi Kagaya
 36 (1,791kbytes)
Effect of the Dispersion of La2O3 and LaCrO3on High Temperature Oxidation of Fe-Cr Alloys
Zenzo Ishijima
 44 (4,235kbytes)
Development of Motor Rotor Core for Hybrid Vehicle by Sinter Diffusion Bonding
Dr. Kazuo Asaka, Tomoaki Arakawa, Mitsuhiro Sato, Toshiyasu Komatsu
 51 (2,868kbytes)
Research on Method of Forming Fine Patterns using Fine Graphite Particles
Shinichi Tachizono, Minoru Shirahige
 59 (2,095kbytes)

New Technologies

New Technologies
  Page Size
  • NIKKALOY WH materials: Heavy metal that guarantees needed weight in a limited narrow space(PDF format)
 66 (354kbytes)
  • NIKKALOY EB-21: Sintered valve guide material with excellent machinability and wear resistance(PDF format)
 67 (453kbytes)
  • NIKKALOY KCR-1: Bronze group bearing material for improved wear resistance(PDF format)
 68 (305kbytes)
  • Wavy Groove (WG) EK Bush: improves durability at low speed and high interface pressure(PDF format)
 69 (543kbytes)

New Products

New Products
  Page Size
  • Sintered Planetary Carrier(PDF format)
 70 (940kbytes)
  • Bearing Cap(PDF format)
 71 (772kbytes)
  • Sprockets for Silent Chains(PDF format)
 72 (664kbytes)
  • High Strength Spiral Bevel Gear(PDF format)
 73 (615kbytes)
  • Valve Timing Control Parts(PDF format)
 73 (615kbytes)
  • Bearings for Optical Disk Spindle Motors (NIKKALOY EAB-5)(PDF format)
 74 (477kbytes)
  • Pumps for High Viscosity Fluid(PDF format)
 75 (611kbytes)
  • Negative Electrode Material for Lithium Ion Battery(PDF format)
 75 (611kbytes)

Topics

Topics
  Page Size
  • Black Matrix Coating Material for CRT(PDF format)
 76 (559kbytes)
  • "Coating Material with Corrosion Resistant for Metal Separators of Fuel Cells"(PDF format)
 77 (819kbytes)
  • Introduction of Award Winning Products(PDF format)
 78 (460kbytes)

Plants and Overseas News

Plants and Overseas News
  Page Size
  • HPM Matsudo Plant (Japan)(PDF format)
 79 (761kbytes)
  • TSP Thai Sintered Products Co., Ltd. (Thailand)(PDF format)
 79 (761kbytes)
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