Major Components
Heat treatment
History
Year
|
Material reform
|
Surface strengthening
|
Component hardening
|
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1955
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Continuous quenching and tempering furnace
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Gas carburizing furnace
|
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1957
|
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Continuous gas carburizing furnace
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Induction hardening
|
1958
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Continuous normalizing furnace
|
|
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1964
|
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Carburizing and nitriding furnace
|
Automatic induction hardening machine
|
1965
|
|
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Multi-axis automatic induction hardener
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1968
|
No oxidation quenching and tempering furnace
|
|
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Ausforging
|
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1969
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Quenching oil for friction stabilized coating
|
|
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1970
|
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CO2-meter atmosphere controlled carburizing furnace
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1973
|
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Gas soft nitriding furnace
|
|
1977
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Control cooled forging
|
|
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1981
|
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O2-sensor atmosphere controlled carburizing furnace
|
High-frequency plug quenching equipment
|
1984
|
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Chilled camshaft through surface re-melting by tungsten inert gas arc
|
1987
|
Roller-hearth-type quenching and tempering furnace (at Honsha Plant)
|
High hardness shot peening for hypoid gear (at Tsutsumi Plant)
|
Induction hardening for SMnB steel rear axle shaft (at Motomachi Plant)
|
Vacuum sintering furnace (at Kinuura Plant for ABS sensors)
|
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Mesh-belt-type nitrogen based sintering furnace (at Kinuura Plant)
|
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Roller-hearth-type annealing furnace (at Kinuura Plant)
|
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1988
|
Rotary sintering furnace (at Honsha Plant for V6 con rod)
|
Press tempering (at Kinuura Plant)
|
Full automatic crankshaft induction hardening machine
|
Gas firing heat treatment furnace
|
Trichloroethylene use ended as a cleaner before carburizing
|
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High-toughness micro-alloyed steel chassis parts (knuckles, etc.)
|
Ion nitriding (at Kinuura Plant)
|
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1989
|
Mesh-belt-type nitrogen based sintering furnace (at Miyoshi Plant)
|
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High-precision 2-face induction hardening for 4WS rack bar (at Miyoshi Plant)
|
High-strength micro-alloyed steel crankshaft (at Honsha Plant)
|
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1990
|
Combustion degreasing furnace
|
Central supervision control system for continuous carburizing furnace (at Honsha and Myochi plants)
|
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Vacuum soft nitriding furnace (at Kinuura Plant)
|
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1991
|
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Internally converted-type continuous gas carburizing furnace (at Myochi Plant)
|
Crankshaft induction hardening machine (at TMMK)
|
Laser cladding valve seat
|
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ABS solenoid electron beam quenching (at Hirose Plant)
|
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1993
|
Vacuum degreasing furnace
|
Low distortion decompression boiling quenching for A/T Gear (at TMH)
|
Induction hardening equipment (at TAP)
|
Separate-room-type carburizing furnace (at Toyota Autoparts Philippines [TAP])
|
Die-less corrugate tube processing (at Myochi Plant)
|
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High hardness shot peening for hypoid gear (at Honsha Plant)
|
Adopt heat treatment distortion simulation "HEARTS"
|
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1994
|
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Corrugated-type aluminum oil cooler (at Motomachi Plant)
|
1995
|
High-strength micro-alloyed steel con rod
|
|
Line-coil-type induction hardening for power steering pinions (at Miyoshi Plant)
|
Sintered VVT cam pulley with resin impregnation (at Kinuura Plant)
|
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1996
|
Re-generation burner for heat treatment furnace (at Miyoshi Plant)
|
High-precision soft nitriding steel for cold forging (at TMH)
|
|
1997
|
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TiN coating facility constructed (at Tahara Plant)
|
Torque converter (T/C) vacuum brazing (at TMH)
|
1998
|
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Batch-type carburizing furnace (at Tianjin Fengjin Auto Drive Parts [TFAP])
|
Hot rolled starter gear processed on single-piece cast iron flywheel (at Aisin-Takaoka)
|
Nitrosulphurizing and chromium-nitride coating (for D4 pump)
|
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1999
|
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New high-hardness shot peening and 2-stage shot peening (at Kinuura Plant)
|
Wide-angle joint CVJ (at Miyoshi Plant)
|
2000
|
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Electroless nickel-phosphate hard plating (at Motomachi Plant)
|
Heat treatment distortion simulation "Deform-HT"
|
2001
|
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High-temperature decompression-type continuous carburizing/ quenching/ tempering furnace (at Kinuura Plant)
|
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2002
|
Roller-hearth-type no oxidizing quenching/tempering furnace with vacuum purge rooms (at Miyoshi Plant)
|
Global standard continuous gas carburizing furnace (at TMMP)
|
Temperature control system for induction tempering (at Myochi Plant)
|
2003
|
Mesh-belt-type sintering furnace (at TMMP)
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Solution ageing and gas nitriding for CVT hoop (at CVTEC)
|
Camshaft induction hardening equipment (at Kamigo Plant and TMMIN)
|
Mesh-belt-type and forged-normalizing furnace (at TMMP)
|
High-precision induction hardening equipment for crankshaft fillet (at Kamigo Plant)
|
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Small rotary furnace for solution ageing treatment of aluminum-forged knuckles (at Motomachi Plant)
|
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2004
|
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Induction hardening equipment (at Toyota Kirloskar Auto Parts [TKAP])
|
2005
|
|
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T/C vacuum brazing (at Toyota Motor Tohoku)
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Induction hardening equipment (at TKAP)
|
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Ravigneaux ring gear induction hardening equipment (at TMH)
|
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2006
|
Roller-hearth-type annealing furnace (at Miyoshi Plant)
|
Multi-cell-type decompression carburizing furnace (at Honsha Plant)
|
Quality measurement technology for induction hardening developed
|
Roller-hearth-type sintering furnace (at Miyoshi Plant)
|
Internally converted-type continuous gas carburizing furnace (at Myochi Plant)
|
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Roller-hearth-type continuous gas carburizing furnace with all chamber doors attached (at Kinuura Plant)
|
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2008
|
In-line and multi-chamber forged-normalizing equipment (at Kinuura Plant)
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Vacuum heated gas quenching furnace, nitride quenching furnace and normalizing furnace for VLC (at Miyoshi Plant)
|
Magnetic field analysis simulation "J-MAG"
|
Roller-hearth-type sintering furnace (at Kinuura Plant)
|
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2009
|
Normalizing furnace for reactor core (at Miyoshi Plant)
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Roller-hearth-type continuous gas carburizing-furnace with doors on all chambers, combined with high-pressure gas and oil cooling furnace (at Honsha Plant)
|
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Continuous gas carburizing furnace (at Myochi Plant)
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