The vacuum furnace is adapted to meet both vacuum sintering and carburizing at negative pressure.
负压渗碳的设备是对真空炉进行改造，使得真空炉能够进行真空烧结和气氛负压渗碳。
The preparation method of the guide tile comprises the steps of material mixing, molding, sintering, shaping, carburizing heat treatment, etc.
上述汽车空调用导向瓦的制备方法包含：混合粉料、模压、烧结、整形与渗碳热处理等步骤。
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