| The anneal process is needed after High-Speed Steel's billet has been forged (or rolled) aiming at regulating unsuitable structure and bad inner stress. It makes fine structure for next working procedure and avoids producing cracks. For this purpose the billet is heated again and it costs a vast amount of energy and time.The end forged temperature of High-Speed Steel is higher than 900℃and higher than A1 line. So the unsuitable structure and bad inner stress may be produced in the cooling process after end forging. Controlling cooling process can avoid producing unsuitable structure and reduce the amplitude of bad inner stress. If the structure and the stress after cooling satisfies the quality of the next working procedure, the anneal working can be canceled, and a large amount of time can be saved, and the residual heat of hot press processing can be used. So a part of even whole of the energy consumed by annealing will be saved. This is our directional idea that the residual heat is used in High-Speed Steel anneal.In this paper the structure transformation and the rule of inner stress distribution in High-Speed Steel have been discussed, and applied to regulate the process parameters of anneal using residual heat. The kinds of residual heat of hot press were discussed in the paper. The ways to use of residual heat were explored based on the characteristic of the residual heat. It makes it possible that the residual heat in High-Speed Steel during hot press is used in anneal techniques. The application of the residual heat is economic, convenient, advantageous and efficient.The application of the residual heat in anneals procedure of High-Speed Steel makes the techniques flow compressed, the process time shortened, the energy saved, and the contamination reduced. The tests indicated that used the residual heat in the anneal of High-Speed Steel is accord with the guideline of building harmonious society and durable development economics.
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