How Can Red Copper Become Hard

Copper "is industrial pure copper or commonly known as copper. Soft and easy to work. The way to increase the hardness of copper is "work hardening". In industry, it is hardened by rolling, extruding and stretching. The popular practice in home conditions is to "knock" hard. The red copper hardens naturally in the process of making copper ware by hand. What you will then encounter is that the copper will become hard and brittle and not suitable for reworking. B: I'll tell you once and for all. Now you should anneal the processed copper parts. The annealing process specification is roughly; The temperature is higher than the recrystallization temperature of copper, which is about 500 degrees Celsius. The heating time (after reaching the recrystallization temperature and holding time) depends on the thickness of the workpiece, heat through and hold for more than half an hour; There is no special REQUIREMENT FOR THE cooling process, and it can even be directly put into the water for rapid cooling - rest assured, it will not be "quenched" like steel parts! Of course, if the thin-walled complex parts are easy to deform, it is better not to put into the water to cool

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