In 2016, the sales of 9 major domestic engineering machinery products reached 544600 units, a year-on-year increase of 10.2%. Among them, excavator sales reached 62899 units, a year-on-year increase of 24.99%. This is the first growth since the continuous decline in engineering machinery sales in 2011.
The consumption of coatings for construction machinery was approximately 110000 tons in 2016, with an annual sales revenue of approximately 2.5 billion yuan and VOCs emissions of approximately 73000 tons. Sany, Zoomlion Heavy Industry, XCMG, Liugong, and Shangong, five domestic construction machinery enterprises, have occupied 34% of the market share, without any dominant monopoly situation.
Current Situation of Construction Machinery Painting
At present, the level of domestic construction machinery in coating materials and processes varies. At present, the competition in construction machinery has evolved from performance and reliability to appearance performance. In order to meet the needs of market competition, various manufacturers are actively improving and introducing advanced coating processes to improve the overall decoration and protective performance of products. According to the characteristics of engineering machinery components, they are mainly divided into thin plate coating, small piece coating, complete machine coating, and structural component coating. Due to the large size and complex shape of structural components, the solution of low-temperature baking paint can only be adopted.
The current situation of domestic construction machinery painting is significant in the following three aspects:
1. Under continuous environmental pressure, construction machinery painting is facing new challenges such as renovation of painting lines and re selection of coatings
2. Construction machinery enterprises have begun to focus on improving coating processes, with some adopting international advanced coating processes and some reaching international leading levels
3. Most domestic construction machinery enterprises have completed the transformation from floor mounted painting to industrial assembly line painting
Engineering Machinery VOCs
In 2016, the sales of construction machinery were 545000 units, the consumption of coatings was about 110000 tons, and the emission of VOCs was about 73000 tons, which is not much different from our first phase of 2 million TEU containers with 94000 tons of VOCs. However, the VOCs emissions per unit product of construction machinery are 134kg, which is much higher than a single container of 47kg. Therefore, the VOCs governance of construction machinery products is equally urgent. The control of VOCs mainly considers the selection of UV curing coatings, powder coatings, and water-based coatings.
Development Trends
The author believes that entering the era of water-based construction machinery is the trend of the times.
There are three main reasons:
1. The comprehensive performance of water-based epoxy primer has basically reached the performance of solvent based epoxy primer.
2. The comprehensive performance of water-based polyurethane topcoat has basically reached the performance of solvent based polyurethane topcoat.
3. Engineering machinery enterprises can meet the coating requirements of oil to water by making appropriate modifications to their existing coating equipment.
