Turning tool manufacturing technology capable of reducing heat damage and facilitating processing
A manufacturing process and heat damage technology, applied in the direction of manufacturing tools, heat treatment furnaces, heat treatment equipment, etc., to achieve the effects of reduced retained austenite content, reduced heating deformation, and short residence time
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Embodiment 1
[0016] The turning tool manufacturing process that can reduce thermal damage and facilitate processing includes sequential blanking, forging, cutting, heat treatment and grinding. The blank is W2MoCr4V2Co8 high-speed tool steel, and the heat treatment includes sequential pre-processing. Heating, heating and heat preservation, quenching and tempering, the preheating is carried out by gradually increasing the temperature in stages, and the preheating includes heating to 450-600°C in the first stage and keeping the temperature for not less than 20min, and heating to 750-800°C in the second stage ℃ and heat preservation for not less than 20min, the heating and heat preservation is to further heat the blank to 1210-1230℃, and heat preservation for not less than 25min, the forging and cutting process also includes an annealing step, the annealing step is to forge The blank is heated step by step: heating from normal temperature to 600-650°C for no less than 10 minutes, continuing to ...
Embodiment 2
[0021] This embodiment is further limited on the basis of Embodiment 1. In order to prevent the oil stains on the blank from affecting the heat treatment during the machining process and affect the final quality of the product, a cleaning step is also included between the cutting process and the heat treatment. The cleaning step includes a degreasing cleaning process and a drying process carried out in sequence.
[0022] Further, the quenching and tempering also include sequential degreasing and cleaning processes, drying processes and inspection processes. The set inspection process is to check the quenching quality of the blank, such as the appearance of cracks and thermal deformation, and the observation of the uniformity of quenching, so as to avoid the blanks that do not meet the quality requirements from entering the next step of processing and wasting processing resources.
[0023] In order to prevent the blank from being oxidized during the cooling process and prevent ...
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