Repairing needle for teflon coating and repairing method

Abstract

The invention provides a repairing needle for a teflon coating. The repairing needle comprises a needle rod for forming a repairing needle main body, wherein one end of the needle rod forms a sharp needle tip while a powder spoon is arranged at the other end of the needle rod. A coating repairing method comprises the following steps: ejecting impurities at a leaking point by using the needle tip; heating the powder spoon by a hot air gun to a smelting point of powder; scooping out one spoon of powder by using the powder spoon; continuously and simultaneously heating the powder spoon and the position of the leaking point by using the hot air gun so that the powder in the powder spoon keeps at a molten state; pouring the powder at the molten state onto the leaking point of the coating; and flattening the powder by using the arc-shaped surface on the outer side of the powder spoon so that the powder covers the leaking point. The utilization and repairing method of the repairing needle is relatively simple and a repairing process is convenient to control; the yield is high after the leaking point is repaired.

Description

technical field [0001] The invention relates to the technical field of paint coating, in particular to a repair needle for Teflon coating and a repair method. Background technique [0002] Teflon coating is a fluorine coating with polytetrafluoroethylene as the matrix resin. The English name is Teflon, and it is usually called Teflon, Teflon, Teflon, Teflon, etc. transliteration). Teflon coating is a unique high-performance coating, which combines heat resistance, chemical inertness, excellent insulation stability and low friction, and has comprehensive advantages that other coatings cannot compete with. Its application flexibility makes it suitable for On products of nearly every shape and size. [0003] Teflon is divided into several basic types: PTFE, FEP, PFA, and ETFE: PTFE (polytetrafluoroethylene) non-stick coating can be used continuously at 260°C, with a maximum service temperature of 290-300°C, extremely low friction coefficient, good Wear resistance and excelle...

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Problems solved by technology

[0006] However, Teflon coatings will inevitably have leaks during the coating process. In the prior art, there are usually the following technical solutions for repairing leaks: one solution is to coat the powder on the glass plate by electrostatic spraying, and then form it The final coating is separated from the glass plate, and cut into strips, and the leaks are repaired using the above-mentioned strip-shaped patches. The flatness of the coating after repairing by this scheme is poor, and the steps are cumbersome; another One solution is to use a heat gun to heat the leak point intensively. When the coating at the leak point is in a high-heat state, use bare hands to dip the powder and quickly apply it to the leak point. Usually dip and coat this The action needs to be repeated ten to twenty times. This repair method can precisely control the adhesion of the powder and keep the repaired coating flat. No control over the amount of powder dipped and the touch-up process behind the glove

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