How to master and manage the oil removal process for electric heating pipes

How to master and manage the oil removal process for electric heating pipes

To master and manage the oil removal process well, it is necessary to correctly grasp the principle of combining the coating with the metal substrate. This is often overlooked, which brings difficulties in practice. The relevant data indicates that the mechanical bonding between the coating and the substrate due to the micro unevenness of the surface can only be firm when there is intermolecular and metal force bonding between the coating and the metal body, and intermolecular and metal force can only be displayed within a very small distance. When the distance between molecules exceeds 5 μ At m, intermolecular forces no longer work. Therefore, the presence of thin oil and oxide films on the substrate surface can also hinder intermolecular or metal bonding. To achieve the above combination, it is necessary to thoroughly remove oil stains, rust, and oxide scales from the product. What we mean by 'quite thorough' is not to say that the surface needs to be absolutely clean after pre plating treatment, but to have a qualified surface. The so-called qualified surface actually refers to the removal of films that hinder electroplating after pre plating treatment, and being replaced by films that are suitable for easy electroplating. At the same time, the metal surface is required to be absolutely flat through pre plating treatment. After mechanical treatment such as grinding, polishing, or rolling, sandblasting, etc., the surface is cleaned of obvious scratches, burrs, and other defects to ensure that the substrate surface meets the requirements for substrate leveling and smoothness of the plated part before oil and rust removal. This point must be clear, and only by clarifying it can the process flow and formula for pre plating treatment be correctly and practically selected in the same formula for pre plating treatment.

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