This Metallurgical Changes in Steels Due To Cryogenic Processing & Its Applications is based on the study of improving the wear resistance and the significance of treatment parameters in different materials.
The cryogenic processing is modification of a material or component using cryogenic temperatures i.e temperatures below 120K (-244F, -153C). Cryogenic processing makes changes to the crystal structure of materials.It is a supplementary process to conventional heat treatment process in steels and unlike simple coating,but effects the entire volume of the component The major results of these changes are to enhance the abrasion resistance and fatigue resistance of the materials..
This project makes a study on the improvement in wear resistance and the significance of treatment parameters in different materials. It is found that cryogenic treatment imparts nearly 110% improvement in tool life. It is even superior to tin coating,
APPLICATIONS:
- Gun barrels: Cryogenic treatment increases the wear life of the barrel and makes cleaning easier and faster. Cryo-Accurizing permanently relieves the internal stresses cause twisting and arcing as the barrel heats up from repeated firing. with no risk of damage to the barrel or the action of a fine gun
- Grinding: Cryogenically treated grinding wheels cut more cleanly. Cryo-Accurizing permanently relieves the internal stresses with no risk of damage to the barrel or the action of a fine gun
- Engine parts: Knowledge of the effect of cryogenic processing on engines and power plants comes mainly from automotive racing applications
- COMPACT DISCS: The effect is a permanent increase in the quality of sound coming from the disk
- It has various Industrial Applications as in Extending the Life and Durability of machines in Machining,Oil and Gas,Mining,Food Processing,Textiles,Wood Fabricating,Dental and Surgical Instruments etc.
CONCLUSION:
The Cryogenic treatment discussed in this project establishes a very stable piece of metal that remains distortion free.It is currently a popular method for improving tool life.and the cost is less than the cost of coating.Currently extensive research is being conducted in an effort to better the available cryocooler technology in fields like materials for the regenerator, cylinder heads, etc., refrigerants used, size of cryocooler, increasing the efficiency. reduce the residual stress between layers of the circuit. Thus keeping the circuit from curling and separating.
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