Construction machinery and painting process thereof

Abstract

The invention discloses a painting process of construction machinery, which includes the following steps: A, first-time spray coating of floating coat gray paint, namely, performing spray coating of the floating coat gray paint for one time on a polished and cleaned primer; B, second-time spray coating of engineering gray finishing paint, namely, performing flash evaporation after spray coating of the floating coat gray paint for certain time, then directly spray coating the engineering gray finishing paint; C, spray coating of the engineering gray finishing varnish, namely, directly spray coating the engineering gray finishing varnish after the engineering gray finishing paint is subjected to flash evaporation for certain time; and D, drying, namely, drying the whole paint coating by fire after performing flash evaporation on the engineering gray finishing varnish for certain time. According to the painting process of the construction machinery, provided by the invention, the first-time spray coating process of the engineering gray finishing paint in the prior art is replaced by the first-time spray coating process of the floating coat gray paint, and the coating coat gray paint can improve the film thickness through improving the self construction solid content, therefore, the film thickness of the coating can be improved on the premise of not adding new spray coating process, equipment, personnel and stations. The invention further discloses the construction mechanism adopting the painting process.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to an engineering machinery and its coating process. Background technique [0002] The coating in construction machinery has the function of protection and decoration equipment. The original coating process of construction machinery is as follows: figure 1 As shown, it goes through successively: primer coating, grinding and cleaning, spot repair, first spraying of engineering gray topcoat, second spraying of engineering gray topcoat, finishing spraying of engineering gray topcoat, and drying, a total of seven coating processes. The coating of construction machinery produced by the existing coating process includes a primer layer, a first engineering gray top paint layer, a second engineering gray top paint layer, and an engineering gray finish paint layer. [0003] In order to better protect their metal substrates, some construction machinery facilities require the co...

AI Technical Summary

Problems solved by technology

[0003] In order to better protect their metal substrates, some construction machinery facilities require the coating to reach a thicker film thickness, but the original coating process and the original coating cannot meet the requirements of increasing the film thickness. Among them, due to the gray surface of the project The paint requires its gloss to be strictly controlled within a certain range, and its construction leveling property is required to be high. Therefore, the molecular weight of the main resin of the engineering gray topcoat related to the glossiness and construction leveling property cannot be too large, while the small molecular weight main resin The application of the application seriously restricts the volatilization speed of the construction, so that the film thickness cannot be increased by increasing the construction solid content of the engineering gray topcoat during construction, otherwise it will cause coating ills such as paint sagging; if it is improved by adding a new spraying process The thickness of the film will inevitably increase the number of personnel, equipment and workstations, and increase the cost

Images