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Culture China 15:53, 17-Jul-2023
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Witness the moment the blade is quenched

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Marvel at the awe-inspiring moment when a blade is quenched, as revealed by our underwater camera. Quenching is an essential process for improving the blade's rigidity, hardness, endurance and resistance to abrasion. Once the blade reaches a temperature of 750-800 degrees centigrade, it's plunged into water to cool.

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