Manufacturing process of p3 type low-smoke halogen-free plastic-coated metal hose
A metal hose and manufacturing process technology, applied to electrical components, insulators, etc., can solve a large number of toxic gases and other problems, and achieve the effect of reducing human injury and preventing fire
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Embodiment 1
[0013] Example 1, the stage of making P3 metal pipe: when making P3 type galvanized metal hose, it is required that the hose is coiled from galvanized low-carbon steel strip, the thickness of the galvanized layer of the steel strip is not less than 7 μm, and the galvanized The layer is required to be uniform, smooth and complete, and dezincification and ink spots are not allowed. The hose is not allowed to rust after two cycles of neutral salt tests. The pitch of the hose should be flexible and have elastic support. Blockage and severe tension elasticity are allowed. Cracks and severe brushing are not allowed at the inner and outer joints of the hose. The inner diameter size is 4mm-150mm.
[0014] Laminating stage: use a vacuum thermal laminating machine, add halogen-free low-smoke flame-retardant polyolefin materials into the vacuum thermal laminating machine, and control the temperature between 150°C and 300°C as required, and require a thickness of 30S when laminating , The...
Embodiment 2
[0016] Example 2, the stage of making P3 metal pipes: when making P3 type galvanized metal hoses, it is required that the hoses be coiled from galvanized low-carbon steel strips, and the thickness of the galvanized layer of the steel strips is not less than 7 μm. The layer is required to be uniform, smooth and complete, and dezincification and ink spots are not allowed. The hose is not allowed to rust after two cycles of neutral salt tests. The pitch of the hose should be flexible and have elastic support. Blockage and severe tension elasticity are allowed. Cracks and severe brushing are not allowed at the inner and outer joints of the hose. The inner diameter size is 4mm-150mm.
[0017] Laminating stage: Use a vacuum thermal laminating machine, add halogen-free low-smoke flame-retardant polyolefin materials into the vacuum thermal laminating machine, and control the temperature between 150°C and 300°C as required. The thickness of the film is required to be 50S , The coating ...
Embodiment 3
[0019] Example 3, the stage of making P3 metal pipe: when making P3 type galvanized metal hose, it is required that the hose is coiled from galvanized low-carbon steel strip, the thickness of the galvanized layer of the steel strip is not less than 7 μm, and the galvanized The layer is required to be uniform, smooth and complete, and dezincification and ink spots are not allowed. The hose is not allowed to rust after two cycles of neutral salt tests. The pitch of the hose should be flexible and have elastic support. Blockage and severe tension elasticity are allowed. Cracks and severe brushing are not allowed at the inner and outer joints of the hose. The inner diameter size is 4mm-150mm.
[0020] Laminating stage: use a vacuum thermal laminating machine, add halogen-free low-smoke flame-retardant polyolefin materials into the vacuum thermal laminating machine, and control the temperature between 150°C and 300°C as required, and require a thickness of 70S when laminating , The...
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