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When spraying robot construction affect the final film thickness What is the sig

Add Date:2014/10/21 Hits:630 Font Size:S M L BACK
When spraying robot construction affect the final film thickness What is the significance?
With the development of the domestic passenger car industry, more and more mechanical spraying replace manual work. In this trend, the robot spraying the proportion is growing. Such as 6 or 9 cups cups station station originally body spray system commonly used, there are robotic spray alternative trend. Auto body parts is also covered with extensive use of robotic spray, such as domestic car bumper painting more than half of production using robots. Robot spraying while maintaining the manual spray complex-shaped surface adaptation, but also with accuracy and repeatability. This article will discuss the impact of the final coating thickness of robot construction sense, for the production of the film is adjusted to control some ideas.
Significance of film thickness control
For coating application, the coating thickness of the coating process is the most important control factor in the sense that:
(1) prevent coating defects caused by improper film thickness. According to experience, on-site production of the appearance of defects in the coating are more than half because of improper paint film thickness control. Some common coating defects such as sagging, paint thinner, etc. directly exposed background and film thickness control deregulated, there are some flaws with this also indirectly related. For example, the bumper painting the first layer of adhesion promoter primer film thickness is not enough, will cause the entire coating adhesion fall, and when the film thickness of the conductive primer which is mainly the effect will decline, which will lead to the first paint transfer rates when using electrostatic spray coating decreases, leading to lack of paint.
(2) to help adjust the appearance of the indicators. Common indicators film appearance such as gloss, color, orange peel, DOI and so need to control the film thickness as a base. Thickness of the above indicators are significantly affected, particularly those affecting the paint film thickness, and therefore, the entire coating quality control, the film thickness control as the most important factor is a must.
(3) cost control. In addition to affecting the quality of the film thickness control costs reflect the quality of the painting, the main cost is about half of the painting coating occupied. Precise thickness control not only help stabilize the coating quality, but also help paint savings. Statistics show that, when using the same spraying equipment, if precise control of film thickness of the coating it consumes more than 25% difference. Currently in the robot for domestic use are mainly Japan, Iwata spray or Mitsubishi robots, these devices introduced earlier, control accuracy is poor; new coating line commonly used by ABB, FANUC, MOTOMAN, DURR and other multi-axis robots.
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