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The machine is used to weld pipes made from PE, PP, PVDF and can not be used to weld material without description, otherwise the machine may be damaged.
Or some accident may be resulted in.
Polyethylene is a thermoplastic resin prepared by polymerization of ethylene. In industry, it also includes the copolymer of ethylene and a small amount of α-olefin. Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature resistance, good chemical stability, can withstand the erosion of most acids and bases. Insoluble in general solvents at room temperature, low water absorption and excellent electrical insulation.
Polypropylene is a polymer formed by addition polymerization of propylene. It is a white waxy material with a transparent and light appearance. The melting point is 189 ℃ and the temperature range is-30mm 140 ℃. It is widely used in the production of fiber products such as clothing, blankets, medical devices, automobiles, chemical containers, etc., as well as food and drug packaging.
PVDF, also known as fluoroplastic, is a kind of high-crystallization, high-performance geothermal plastic, which is suitable for a wide range of temperatures and provides full security for high-temperature applications; it has good anti-ultraviolet properties, even if installed outdoors, ultraviolet radiation does not affect its life and material properties at all.
(1) Before welding, firstly, check if the material, diameter and wall thickness are the required ones. Secondly check if there are scratches or fissures on the surface of pipes/fittings.
(2) Clean the inside and outside surface of pipe ends to be welded.
(3) Place the pipes/fittings in inserts of frame. The pipe out of the basic frame should be supported to the same central axial of clamps. Fasten the screws of clamps to fix the pipes/fittings.
(4) Test the drag pressure: open the pressure regulation valve completely, lock the swing check valve tightly and then push forward the direction valve meanwhile adjust the pressure regulation valve.
(5) Open the pressure regulation valve completely, lock the swing check valve tightly and then push forward the direction valve meanwhile adjust the pressure regulation valve to set the system pressure equals to drag pressure add butting pressure.
(6) Separate the pipes/fittings ends after turning swing check valve in anti-clockwise direction to relief the pressure to lowest.
(7) Close the pipes/fitting ends and check the alignment of them. The maximal misalignment should not exceed 10% of the wall thickness, and it could be improved by loosening or tightening the screws of clamps.
(8)Clear the dust or slit on the surface of heating plate, and put the heating plate between the pipe ends after it reaches required temperature. Close the pipes/fittings end.
(9) Turn swing check valve anti-clockwise to reduce the pressure (not more than drag pressure) and turn swing check valve in clockwise direction to the end. Press the button “T2”.
(10) Open the frame and take out the heating plate and close two melting ends as quickly as possible.
(11)Keep the bar of direction valve on the close position for 2~3 minutes, put the bar of direction valve on middle position and press the button (“T5”) to count cooling time until it is over.
The machine is used to weld pipes made from PE, PP, PVDF and can not be used to weld material without description, otherwise the machine may be damaged.
Or some accident may be resulted in.
Polyethylene is a thermoplastic resin prepared by polymerization of ethylene. In industry, it also includes the copolymer of ethylene and a small amount of α-olefin. Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature resistance, good chemical stability, can withstand the erosion of most acids and bases. Insoluble in general solvents at room temperature, low water absorption and excellent electrical insulation.
Polypropylene is a polymer formed by addition polymerization of propylene. It is a white waxy material with a transparent and light appearance. The melting point is 189 ℃ and the temperature range is-30mm 140 ℃. It is widely used in the production of fiber products such as clothing, blankets, medical devices, automobiles, chemical containers, etc., as well as food and drug packaging.
PVDF, also known as fluoroplastic, is a kind of high-crystallization, high-performance geothermal plastic, which is suitable for a wide range of temperatures and provides full security for high-temperature applications; it has good anti-ultraviolet properties, even if installed outdoors, ultraviolet radiation does not affect its life and material properties at all.
(1) Before welding, firstly, check if the material, diameter and wall thickness are the required ones. Secondly check if there are scratches or fissures on the surface of pipes/fittings.
(2) Clean the inside and outside surface of pipe ends to be welded.
(3) Place the pipes/fittings in inserts of frame. The pipe out of the basic frame should be supported to the same central axial of clamps. Fasten the screws of clamps to fix the pipes/fittings.
(4) Test the drag pressure: open the pressure regulation valve completely, lock the swing check valve tightly and then push forward the direction valve meanwhile adjust the pressure regulation valve.
(5) Open the pressure regulation valve completely, lock the swing check valve tightly and then push forward the direction valve meanwhile adjust the pressure regulation valve to set the system pressure equals to drag pressure add butting pressure.
(6) Separate the pipes/fittings ends after turning swing check valve in anti-clockwise direction to relief the pressure to lowest.
(7) Close the pipes/fitting ends and check the alignment of them. The maximal misalignment should not exceed 10% of the wall thickness, and it could be improved by loosening or tightening the screws of clamps.
(8)Clear the dust or slit on the surface of heating plate, and put the heating plate between the pipe ends after it reaches required temperature. Close the pipes/fittings end.
(9) Turn swing check valve anti-clockwise to reduce the pressure (not more than drag pressure) and turn swing check valve in clockwise direction to the end. Press the button “T2”.
(10) Open the frame and take out the heating plate and close two melting ends as quickly as possible.
(11)Keep the bar of direction valve on the close position for 2~3 minutes, put the bar of direction valve on middle position and press the button (“T5”) to count cooling time until it is over.
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