Senior Metallurgist
Senior Metallurgist Interview Questions and Answers
Q1. Which is clean process carburizing or carbonitriding ?
Carburizing is a cleaner process compared to carbonitriding.
Carburizing involves introducing carbon into the surface of a metal to increase its hardness, while carbonitriding introduces both carbon and nitrogen.
Carburizing typically requires fewer process steps and is more cost-effective.
Carbonitriding can lead to the formation of more complex compounds, which may require additional post-treatment processes.
Carburizing is often preferred for parts that require high wear resis...read more
Q2. How to calibrate furnaces and which standard follow for it??
Furnace calibration is done by following standard procedures and using calibrated instruments.
Calibration should be done using calibrated instruments such as thermocouples and pyrometers.
The standard followed for calibration depends on the type of furnace and its application.
Some common standards for furnace calibration include ASTM E220, AMS 2750, and ISO 9001.
Calibration should be done regularly to ensure accurate temperature readings and consistent performance.
Documentatio...read more
Q3. Martensite formation how can reach?
Martensite formation can be achieved through rapid cooling of austenite.
Martensite formation occurs when austenite is rapidly cooled below the martensite start temperature.
The cooling rate must be fast enough to prevent the diffusion of carbon atoms, allowing them to become trapped in the crystal lattice.
Quenching in water, oil, or air can be used to achieve the necessary cooling rate.
Higher carbon content in the steel promotes martensite formation.
Alloying elements such as n...read more
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