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1 概述 活塞行业应用铝水保温炉很普遍,但目前从行业热工控制技术上看,大都采用电子电位差计、数显表、动圈表等二位式仪表实施温控。因此,从工艺上讲缺乏对铝水温度的精度保障,不能很好地保证铝水精炼质量。同时;保温炉的电热元件(电炉丝或硅碳棒)经常被烧断,通常寿命维持15～20天,致使在一年的生产中,不得不频繁停炉维修;导致电热元件消耗大,凉炉升温费电多,维修费时又费工,造成了较高的生产成本,降低了设备使用效率,影响产品产量。这种状况给活塞行业的热工人员带来极大的烦恼。
1 Overview Piston industry, application of aluminum water holding furnace is very common, but the current thermal control technology from the industry point of view, most of the use of electronic potentiometer, digital form, dynamic watch two instruments to implement temperature control. Therefore, the lack of technically speaking, the accuracy of the aluminum water temperature protection, can not well ensure the quality of aluminum refining. At the same time; holding furnace heating element (electric wire or silicon carbide rod) is often blown, usually for 15 to 20 days of life, resulting in a year of production, have frequent maintenance shutdown; resulting in electric heating element is expensive, cool Furnace heating costs more electricity, maintenance costly and time-consuming, resulting in higher production costs, reducing equipment efficiency, affecting product output. This situation to the piston industry thermal workers bring great trouble.