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1. Direct Carburizing (Vacuum Carburizing)

Direct carburizing is the method of the completely new concept, which was made to unite vacuum technology with gas carburizing. It is eco-friendly, is high quality and, moreover, reduces operating costs by half. This technology is the epoch-making method of carburizing by making vacuum (low pressure) as career gas and using of the unsaturated hydrocarbon gas very little as carburizing gas.
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2.
Feature

| (1) |
There is no oxidization of grain boundary (no oxidization of surface alloy element) |
| (2) |
Carburizing of a narrow hole is possible |
| (3) |
High concentration carburizing is possible. |
| (4) |
Very thin carburizing (30-50 micrometers) is possible. |
| (5) |
Decompression quenching is possible. |
| (6) |
Finish surface condition is good. |
| (7) |
Non-soot (non-deposit of soot). |
| (8) |
Non-discharge CO2. |
| (9) |
Installation into factory of machining is possible |
| (10) |
Uninhabited run is possible. |
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3.
Usage

Auto parts (gear, shaft, etc.), Motorbike parts, Construction machine part, Knitting machine parts, OA apparatus parts, household-electric-appliances parts, etc.
4. A cross-sectional structure

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photo-1.
cross-sectional structure of Gus Carburizing |
photo-2.
cross-sectional structure of Direct Carburizing |
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