我厂生产的φ1.8米、800米~2蒸汽锅炉内、外排加热管翅片(图1),其螺旋形是采用3×25或3×30毫米(厚×宽)的钢板,在车床上冷绕而成。冷绕工艺,是通过高效率、高质量的螺旋叶片绕制工具来实现。工具结构及工作原理: 根据导流成形原理,制造一套 I plant the φ1.8 m, 800 m ~ 2 steam boiler, the row of heat pipe fins (Figure 1), the spiral is the use of 3 × 25 or 3 × 30 mm (thickness × width) of the steel in the Cold made of lathe. Cold around the process, is through high-efficiency, high-quality spiral blade winding tools to achieve. Tool structure and working principle: According to the principle of diversion forming a set