A surface coating material for copper-free welding wire, its preparation method and application
A surface coating, non-copper-plated technology, applied in welding/cutting media/materials, welding equipment, manufacturing tools, etc., can solve problems such as poor, non-copper-plated wire, poor anti-rust performance, wear and conductivity of contact tips, etc. , to achieve the effect of improving rust resistance, improving grinding environment and improving welding process.
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Embodiment 1
[0025] The present embodiment provides a kind of surface coating material that is used for copper-free welding wire, comprises the following components by mass percentage: palm oil 88%, polytetrafluoroethylene 7%, nano-titanium dioxide 1.0%, tin oxide 1.2% , nano antimony powder 0.5%, potassium borate 2.3%. Among them, the diameter of polytetrafluoroethylene is controlled at 20 μm, and the size of nano-titanium dioxide and nano-antimony powder is controlled at about 150 nm.
[0026] Surface coating material preparation method: heat the base oil in a reactor at 100°C and stir for 30 minutes; place the remaining materials in a small powder shaker for 1 hour, put them into the reactor after being fully and uniformly mixed, and heat to 100°C ℃, stirred for 40 minutes and then stood still to make a surface coating material for non-copper-plated welding wire.
[0027] The surface coating material prepared above is coated on the surface of the welding wire substrate by neck reductio...
Embodiment 2
[0029] The present embodiment provides a kind of surface coating material that is used for copper-free welding wire, comprises the following components by mass percentage: palm oil 90%, polytetrafluoroethylene 4.5%, nano-titanium dioxide 1.5%, tin oxide 1.0% , nano antimony powder 0.5%, potassium carbonate 2.5%. Among them, the diameter of polytetrafluoroethylene is controlled at 15 μm, and the size of nano-titanium dioxide and nano-antimony powder is controlled at about 100 nm.
[0030] Surface coating material preparation method: put the base oil in the reactor, heat to 90°C, and stir for 30 minutes; place the rest of the materials in a small powder shaker for 1 hour, put them into the reactor after being fully and uniformly mixed, and heat to 90°C, stirred for 40 minutes and then left to stand to make a surface coating material for non-copper-plated welding wire.
[0031] The surface coating material prepared above is coated on the surface of the welding wire substrate by ...
Embodiment 3
[0033] The present embodiment provides a kind of surface coating material that is used for copper-free welding wire, comprises the following components by mass percentage: animal fat oil 85%, polytetrafluoroethylene 10%, nano-titanium dioxide 2%, tin oxide 0.9%, nano antimony powder 0.6%, potassium borate 1.0%, potassium carbonate 0.5%. Among them, the diameter of polytetrafluoroethylene is controlled at 10 μm, and the size of nano-titanium dioxide and nano-antimony powder is controlled at about 50 nm.
[0034] Surface coating material preparation method: put the base oil in the reactor, heat to 100°C, and stir for 30 minutes; place the rest of the materials in a small powder shaker for 1 hour, put them into the reactor after being fully and uniformly mixed, and heat to Stir at 100°C for 40 minutes and then stand still to make a surface coating material for copper-free welding wire.
[0035] The surface coating material prepared above is coated on the surface of the welding w...
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