提供不同的壳体材质选择：钢板喷塑、不锈钢、防锈铝合金；
The shell material provide different options:spray steel plate, stainless steel, rust-proof aluminum alloy;
对带双侧异形凹槽铝合金壳体的材质选择、成形工艺以及热处理工艺规范进行了研究。
The material selection, the forming technology and the heat treatment rules of the aluminium alloy shell with two-sided special impression are studied.
9：搅拌筒壳体各部件由高强度及高耐磨材质制作而成。10：搅拌筒整体焊接采用自动埋弧焊技术。
9: Stir the tube shell parts from high-strength and high wear-resistant materials produced. 10: mixing tube as a whole to adopt automatic submerged arc welding technology.
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