Non-combustion meltallizing spray-coating device

Abstract

The invention relates to a non-combustion meltalizing spray-coating device which comprises a metal wire transmitter, a spray-coating device, an air supplier and a power supply, wherein the metal wire transmitter transmits a first metal wire and a second metal wire to the spray-coating device, the spray-coating device is provided with a jetting port, the first metal wire and the second metal wire respectively pass through the spray-coating device to reach the jetting port, the other end of the spray-coating device is connected with the air supplier, the air supplier supplies compressed air to the jetting port and the jetting port jets out the compressed air. The power supply respectively supplies currents of various electric properties to the first metal wire and the second metal wire and enables the first metal wire and the second metal wire to generate an electric-arc phenomenon on the jetting port to melt the first metal wire and the second metal wire into a melting material, the compressed air supplied by the jetting port is used for blowing about the melting material into a plurality of metal granules, and the metal granules are sprayed and coated on the basal material by the compressed air. The invention can be used for the basal material made of various materials and can finish the surface processing without cooling.

Description

technical field [0001] The invention relates to a spray coating device, especially a non-combustible spray coating device. Background technique [0002] With the popularization of 3C products, electromagnetic interference (Electro-Magnetic Interfering, EMI) has become a new public hazard, regardless of the normal operation of electrical appliances or the consideration of human health, the problem of electromagnetic interference has been concerned by the public, and the civil society or Government organizations have also begun to pay attention to the problem of electromagnetic wave interference, thus formulating electromagnetic interference control standards for various electronic products. In order to prevent electromagnetic interference of electronic products, the most direct method is to use a shell with good electromagnetic shielding effect to completely block the circuit components of electronic products from the outside world. Nowadays, metal shells have better shieldin...

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Problems solved by technology

[0010] It can be seen from Table 1 that the minimum melting temperature of the above spraying method is 80 degrees Celsius, which will still melt the surface of the plastic shell and affect the appearance of the plastic shell. In addition, due to the high melting temperature of the above spraying technology, the substrate There will be restrictions on the selection, substrates with low ignition point or poor temperature resistance, such as paper, plastic, etc., cannot be sprayed by the above-mentioned spraying technology, so the above-mentioned spraying method cannot be used to spray on the surface of all substrates At the same time, most 3C electronic products cannot use the above-mentioned spray technology for electromagnetic shielding coating

[0011] Therefore, in view of the above problems, a non-combustion spray coating device is proposed, which not only improves the shortcomings of traditional metal shells that cannot be formed into arbitrary shapes and the shortcomings of traditional plastic shells that are conductively processed, but also improves the joint strength of sprayed coatings. to solve the above problems

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