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Carburizing(HCQT), Carbonitriding(HCNQT)
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Gas Carburizing is method to increase surface hardness of mild or low alloy steels using heating and add carbon into surface of material but the core still toughness, make the steel get high strengh and hardness.
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Gas Carbonitriding is modified process of gas carburizing. A nitrogen source (ammonia) ,is added to the carbon-rich gas, so that both carbon and nitrogen diffuse into the surface of the steel. Carbonitriding is suitable for plain structure, low carbon steel that would not a uniform case hardness under standard gas carburizing.
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Characteristic of GAS CARBURIZING and CARBONITRIDING
• Increase surface hardness of part.
• Improved fatigue strength.
• Improved wear and abrasion resistance.
• Improved high pressure resistance.
• Improved tooth bottom, tooth plane strength.
Application
• Automobile, Motorcycle parts.
• Transmissions gears.
• Engine gears.
• Electronic appliances.
• Diesel common rail nozzle.
• Agricultural machine parts.
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This figure to show hardness cass depth of HCQT at Hv 513 is 0.2 mm. |
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