ã€China Aluminum Industry Net】 1. Type of soaking furnace Aluminum alloy ingot soaking furnace is a heating furnace that relies on convection to heat the ingot in a periodic manner. Generally, the heating gas flow rate on the surface of the ingot is above 10m/s. . Commonly used aluminum alloy round ingot soaking furnace can be divided into electric heating, gas or liquid fuel heating soaking furnace according to different energy sources. There are indirect heating and direct heating soaking furnace according to the heating method, according to the structure of pit type and trolley Different styles. Recently, there has been a continuous homogenization furnace that combines the soaking of the extrusion billet and the heating before extrusion.
Second, the pit resistance type soaking furnace This soaking furnace is usually used crane or special Gantry crane loading and discharging, and the pit construction costs are high, the heat loss when the lid is open, therefore, in addition to the last century In addition to several aluminum processing plants built in the 1950s and 1960s, they are rarely used in China.
Second, the trolley homogenizer trolley homogenization furnace is used for homogenization of aluminum alloy round ingots. It is generally composed of a homogenization furnace, a forced air-cooling chamber, and a carrier trolley (see Fig. 2-12-39). The heating method is usually indirect heating with gas or liquid fuel radiant tubes, but also with electric heating and flame direct Heated (see Figure 2-12-40). The cooling method usually pulls the trolley out of the furnace or cools the tray into a forced air-cooling room. Domestic trolley-type aluminum rod homogenization furnace capacity has several kinds of l5, 20, 25, 30, 35, 40t, can handle casting rods up to 8m, furnace temperature control accuracy of ± 5 °C, in which fuel indirect heating uniform The thermal efficiency of the furnace is 30% to 42%, while the lower fuel consumption of the open flame is only 26kg/t cast rod. Tables 2-12 to 17- 2-12 are the technical parameters of several typical soaking furnaces currently on the market.
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