Several Factors Leading to Defects of Prepainted Galvanized Steel Coil

The quality of Prepainted Galvanized Steel Coil products, especially the quality of conductivity, immediately endangers the actual effect of product decoration design. Therefore, we must first grasp several factors that are very likely to cause defects in Prepainted Galvanized Steel Coil during the entire spraying process.

Prepainted Galvanized Steel Coil

1. Raw materials

The raw material is the most harmful element in the whole process of spraying Prepainted Galvanized Steel Coil. Because there is a color cast in the middle of the batch number of the architectural coating, the particle size of the architectural coating is insufficient and the coating rate is not high. The architectural coating and the organic solvent do not cooperate well. These levels will immediately harm the actual effect of spraying and cause defects. The unevenness, uneven film thickness, and poor edge tensile strain of Prepainted Galvanized Steel Coil also immediately endanger the product quality and overall application. Therefore, the selection of raw materials should be strictly controlled.

2. Machinery and equipment

The spraying production line stipulates that the mechanical equipment must be intact and undamaged. The mechanical equipment must operate stably without horizontal and vertical vibration. The spray roller must be carefully ground. All rollers of the computerized coating machine vibrate horizontally, and must be operated within the allowable range, otherwise the coating process performance will be seriously compromised.

3. Processing technology

The painting process is closely related to the quality of Prepainted Galvanized Steel Coil, and it is stipulated that the relative linear velocity ratio of the spraying roller, the paint roller, the measurement verification roller and the plate is controlled within a certain range. It is necessary to set a certain viscosity range for architectural coatings based on different management systems and the film thickness of sprayed products to ensure the smooth development of spraying and promote the improvement of product quality. For the dry curing process of architectural coatings, the operation of the drying box must be operated according to the requirements, and can not be changed at will, otherwise it will seriously harm the spraying production.

4. Natural environment

It is stipulated that the interior of the spraying room should be clean and tidy to ensure anti-fouling, anti-moth and certain natural ventilation characteristics to ensure that the performance of the spraying process will not be polluted by the environment. In addition, the processing technology standards were immediately changed due to the change in average temperature.

5. Human error

The obligation of the operator, the standardization of technical mastery and actual operation are important to obtain the practical effect of high-quality Prepainted Galvanized Steel Coil. Therefore, it is necessary to improve the learning and training of the operators and allow the operators to grasp the basic principles and key points of spraying technology, enhance the obligation, and carry out actual operations in strict accordance with the safety operating regulations to ensure high-quality Prepainted Galvanized Steel Coil products.

The above is all the content of the five types of points that are very likely to cause defects in Prepainted Galvanized Steel Coil. The elements are connected and affect each other. Sometimes the cause of a defect is related to various factors. It is necessary to analyze the actual problems in depth and eliminate them in many ways.

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