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四、制作太阳灶的壳体聚光式太阳灶的壳体材料是决定太阳灶效率、寿命、成本和实用价值的关键。目前多用水泥钢筋结构,也有用石膏、纸壳、菱苦土、金属板冲压成型、玻璃钢、钙塑材料、负压气囊(用涂料纤维做成的密闭气囊)等。水泥灶壳和玻璃钢灶壳的制作工艺如下。 1.水泥灶壳:在制好的凸模上绘制灶壳边缘轮廓线。为了便于灶壳脱模,需在凸模表面上涂脱模剂,如石蜡、机油等,亦可贴一层塑料薄膜。。沿轮廓线放置3厘米厚的木框。在凸模上抹2～3毫米厚的灰浆,
Fourth, the production of solar cooker shell Condenser solar cooker shell material is to determine the solar cooker efficiency, life expectancy, cost and practical value of the key. The current use of reinforced concrete structure, but also useful plaster, paper shells, Ling Mitu, sheet metal stamping, FRP, calcium plastic materials, negative pressure airbags (made of coated fiber airbags) and so on. Cement stove shell and glass steel stove shell production process is as follows. 1. Cement stove shell: in the system of good punch drawn stove edge outline. In order to facilitate the demolding stove shell, the mold surface to be coated with release agent, such as paraffin, oil, etc., can also be affixed to a layer of plastic film. . Place a 3 cm thick wooden frame along the outline. On the punch wipe 2 to 3 mm thick mortar,