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Hitachi Powdered Metals

Hitachi Chemical

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Technical Report(2005)

Cover Photo
Sintered Mechanical Fuse Parts for Compressors of Car Air-conditioner

The cover shows sintered mechanical fuse parts for use in the pulleys of variable-displacement air-conditioner compressors in vehicles.
This product has the dual functions of transmitting power from the engine to the compressor by direct coupling of the pulley and compressor shaft during normal operation and protecting the engine belt from excessive loads. In the protective function, the mechanical fuse part of the inner hub is designed to break if the regulated load is exceeding, thereby engine belt is protected by disconnecting from engine power.
Because high reliability is required in this product, development was carried out from both the view of material design and the view of process technology, resulting in the world's first application of sintering technology in this field. This innovative product not only realizes higher performance in compressors, but also makes important contributions to weight reduction and economy.

Preface

Preface
  Page Size
The Full-Density Future of Powder Metallurgy(PDF format)
Pandall M. German
1 (101kbytes)

Review

Review
  Page Size
Technical Trends in Soft Magnetic Parts and Materials(PDF format)
Dr. Kazuo Asaka, Dr. Chio Ishihara
3 (700kbytes)

Research Report

Research Report
  Page Size
Effects of Densification and Heat Treatment Conditions on Contact Fatigue Strength
Yuji Yamanishi, Tadayuki Tsutsui, Kei Ishii
10 (1,270kbytes)
Development of Valve Seat Insert Material for Heavy-Duty Engines
Hideaki Kawata
17 (741kbytes)
Effect of Bearing Material and Impregnated Lubricant on Sliding Performance of Spindle Motor Bearings
Takeshi Yanase
23 (369kbytes)
Development of Copper-Alumina Laminated Compact by Microwave Sintering
Junichi Ichikawa
29 (374kbytes)
Reduced Gas Desorption-type Inner Coating
Hidekazu Yamada, Akio Koide, Yoshihiro Kubota
35 (526kbytes)
Reduced Gas Desorption-type Inner Coating
Hidekazu Yamada, Akio Koide, Yoshihiro Kubota
40 (769kbytes)

Commentary

Commentary
  Page Size
Arrangement of Housing Vane Machining and Production Line(PDF format)
Yuji Fukushima
45 (191kbytes)

New Technologies

New Technologies
  Page Size
  • Surface Treatment Technology for Stable Sliding Property and Corrosion Resistance in Lubricating Oil-free Environments (PDF format)
52 (132kbytes)
  • Ge-added Stainless Steel Alloy with High Corrosion Resistance (PDF format)
46 (181kbytes)
  • Bearing Assembly for High Accuracy MD (PDF format)
54 (38kbytes)
  • Long-life Helical EK Bush (PDF format)
55 (114kbytes)

New Products

New Products
  Page Size
  • Reactor Cores (PDF format)
56 (91kbytes)
  • NIKKALOY EH Series: Heat-resistant, Wear-resistant Sintered Materials for Valve Seat Inserts (PDF format)
57 (90kbytes)
  • Reduced Gas Desorption-type CRT Coating Material (PDF format)
58 (46kbytes)
  • Color LBP Drum Bearing (PDF format)
59 (127kbytes)
  • Parts for Electromagnetic Clutches (PDF format)
60 (99kbytes)

Topics

Topics
  Page Size
  • Introduction of the New Business Development Office (PDF format)
61 (406kbytes)
  • Announcement of Showroom Renewal (PDF format)
62 (207kbytes)
  • Award-winning Products (PDF format)
63 (192kbytes)
  • Technical Lectures Held in FY 2004 (PDF format)
64 (49kbytes)

Plants and Overseas News

Plants and Overseas News
  Page Size
  • SIAM HPM CO., LTD. (Thailand) (PDF format)
67 (202kbytes)
  • HPMS - HK Hitachi Powdered Metals (Singapore) Pte. Ltd. Hong Kong Branch (PDF format)
67 (202kbytes)
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