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Why Carburizing is Efficient for Metals
Carburizing refers to the process through which metal in form of steel or iron gets heated with a carbon bearing material and in turn absorbs the carbon. The material bearing carbon might either be carbon monoxide or charcoal as well. These metals are usually heated in order to make them harder. The carbon content of the metal after heating varies depending on the time taken as well as the temperature maintained during the heating process. High carbon diffusion is attained once the temperatures for heating are high and the time taken is longer. Once the metal is heated, it is rapidly cooled through a process known as quenching and the carbon content hardens making the metal become hard as well.
Other metal hardening techniques include nitriding in addition to carburizing. That steel which hasn’t been hardened is of lower quality as compared to that which has which is the case especially for stainless steel. Once the metal is hardened, it is able to be more resistant to wear and corrosion as well. Carburizing is an eco-friendly way of hardening metal, unlike other techniques. There are various hardening agents such as sodium cyanide, hardwood charcoal or barium carbonate as well which are used during the steel hardening process. During gas carburizing, propane or natural gas is used to emit carbon for the metal being heated. There is also liquid carburizing whereby the carbon is derived from sodium cyanide or barium chloride.
For the sake of hardening the metal, one can subject various workpieces to carburizing. One should always put into consideration the cross-sectional area of the metal before heating it as they all gave different cooling rates as some might break when a lot of stress is exerted on them. There are dimensional changes that are experienced by the metal going through carburizing. The type of material used will have an effect on the amount of changes the workpiece goes through.
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Gas carburizing is usually appropriate for parts that are usually large while liquid carburizing is most suitable for medium or smaller parts. By creating a carbon layer on the surface of the steel or metal, it becomes more durable and lasts for a longer time. The hardening process is done on the metal after it has been formed its desired shape. Endurance to heavy loading and resistance or wear is enhanced when you harden them through carburizing. Most gear wheels used to drive steam turbines in powers stations, or oil drilling rigs have been hardened.
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Cars such as race cars, trucks as well as ships use work hardened piece. In order for drilling to be effective, screws have to be hardened. In order to reduce the amount of damage done on the surface of the metal can be reduced by hardening them.
