研究发现，熔接痕的结构与材料配方、挤出机机头模具及加工工艺参数均有关系。
The research showed that the structure of weld mark was connected with the material formulation, die mould of extrusion machine and parameters of processing technology.
介绍用两台挤出机共挤复合三层塑料管材机头的模具设计。
Extrusion die design for compound triple-layer plastic pipe by two extruding machines is introduced.
铝塑复合管产品质量直接受塑料挤出机、模具、交流脉冲氩孤焊机、牵引机等设备的机械性能及原材料质量的影响。
The quality of aluminum_plastic composite tube is affected by plastic extrude machine, mode, welding machine of TIG AC/DC, traction engine etc. and also affected by raw material.
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