Coating thickness gauge used in electroplating industry

For anodic coatings, the thin areas of the coatings cannot withstand sacrificial corrosion and will cause corrosion of the substrate. However, after a part of a part is corroded, it has already failed, and the excessive thickness actually forms a waste of coated metal. If the thin part is not rusted, the average thickness can only be greatly increased, and the plating processing cost is increased.For cathodic coatings, the thin layer has a high porosity, and it is easy to produce point-like rust, and then the rust points increase, forming a continuous piece of rust. Compared with the anodic coating, the thin part of the coating corrodes faster. For local anti-nitriding and carburizing coatings, perforations are easily formed in thin areas and lose their protective effect. If the thickness is uniform, the porosity of each part is not much different, and the overall corrosion resistance is improved.For bright electroplating, the thin layer has a low cathode current density and poor smoothness, which deteriorates the overall appearance.Alloy electrodeposition is that the alloy composition is different at different thicknesses, or the appearance is uneven, or the corrosion resistance is inconsistent.The physical and mechanical properties of the coating at different thicknesses are different (such as brittleness, internal stress, etc.). If machining processing such as stamping and forming is required after plating, the machined performance is often poor at excessively thick plating (peeling, cracking, powder shedding, etc.).In terms of corrosion resistance, appearance, machining performance, etc., it is desirable to improve the uniformity of the coating thickness. Hard chrome plating is required for parts with precise dimensions. Sometimes it is difficult for users to request no grinding treatment after plating. Sometimes, in order to ensure that the thin parts reach the final size requirements and the thickness uniformity is poor, the average thickness must be greatly increased. Not uncommon in production. In order to make the thickness of each part of the coating on the workpiece as close as possible, it is necessary to understand the factors that affect the uniformity of the thickness distribution.In the electroplating process, current density and time, temperature, main salt concentration, anode area, plating solution stirring and other factors will affect the uniformity of the thickness of the coating, so the electroplating plant needs to pay more attention to the electroplating process. All links in the process are strictly controlled to ensure that the quality of the workpiece is stable and the thickness of the coating is uniform.
Linshang Coating Thickness Gauge can be used to measure the thickness of the coating and the uniformity of the coating. The representative products of the coating category include Linshang LS220H coating thickness gauge. The following are the advantages of Linshang Coating Thickness Gauge:1. The operation of the instrument is very simple, without frequent calibration, you only need to simply adjust the zero to start the measurement.2. The film thickness gauge adopts ruby ​​probe, which is wear-resistant and corrosion-resistant, the instrument is durable and the cost performance is very high.3. In Fe/NFe mode, the instrument can automatically identify the measurement substrate and quickly and automatically convert it.4. The probe of the film thickness meter adopts advanced digital probe technology, and the measurement data is not easily interfered to ensure the measurement accuracy, and can be applied to a variety of measurement environments.