Automotive coating industry solutions

2022-07-26 09:18

Automotive and related industry spray booth purification and filtration Few industrial applications require as stringent a high clean working environment as paint spray facilities in the automotive and related industries. For reasons of production quality, hygiene and safety, painting facilities require a constant supply of clean air. Currently, our company provides clean air solutions and additional services to the automotive coating lines of many large automobile manufacturers around the world. We offer clean air solutions with potentially cost-saving Life Cycle Cost (LCC) and can provide customized personalized optimization services according to your specific needs.

As an air filter system supplier, our company offers you safety, innovation and added value. Your initial operating costs are affected by many factors, and air filter performance is a key factor, and our extensive experience working closely with air experts on-site can greatly improve the painting process. Our company provides excellent solutions to meet the changing needs of customers by expanding the scope of services. We make full use of the technical knowledge of industry experts to provide good engineering site solutions. Products and services can be provided according to your needs. It is difficult to achieve a good painting environment by modifying the construction of the paint shop so that the airflow creates a good painting environment. While the design of airflow may seem simple—air is blown in from above and exhausted from below—air flow tends to be uneven. Large-scale production lines mean that uniform airflow through air filters and the avoidance of ducting between booths is often less of a technique than an art.

Saving paint Saving paint means optimizing the painting process, which has far-reaching implications for the operating costs and productivity of an automotive painting line. Paint savings may be realized if the coating thickness can be reduced, the process can be more standardized, the level of paint transfer can be improved, or the number of line downtimes for equipment cleaning and maintenance can be reduced and the line efficiency can be improved.

Recently, my company took a different approach to analyzing paint shop design performance in a more scientific way, with the aim of optimizing airflow to address performance/cost issues. The method used by our company utilizes "Computational Fluid Dynamics (CFD)" to conduct computer simulations of the air flow in the paint shop. This work is to simulate the airflow in the production environment through a CFD program specially designed for the production environment. This CFD method, guided by advanced computer technology to focus on airflow within the paint shop environment, was first adopted by Ford Motors and subsequently by other automotive companies and production lines. Paint Shop - Paint Shop The primer shop shown in Figure 1 has a typical example. To see clearly, hide side walls and shadows.

In principle, the airflow is filtered by the top cotton at the top of the workshop and sent down. It should pass through the top two spray ports for spraying parallel surfaces and the eight spray ports on the side for spraying vertical surfaces, and continue to pass through the sprayed surface. The body then passes through the grating floor and into the sump drain. In fact, the spacing of the skids is very tight, and there are usually more than one vehicle in the booth at a time, so the space is a bit disturbed. In this case, the two upper spray ports spray different parts of the body, and as shown in Figure 2, are at different levels. as shown in picture 2. While the air flow was very even going down to the spray port on the right where the bonnet (hood) was being sprayed, the even air flow was disrupted when passing the upper spray port where the roof was being sprayed. The blues, yellows, greens, and reds in the graph represent increased airflow velocities. This non-uniformity causes air to be deflected to the sides of the spray port, causing eddy currents to form under the spray port and back up, potentially jeopardizing the spraying process.

Air flow The upward airflow prevents the paint from being fully sprayed onto the surface of the car. A further problem is that overspray paint mist can deposit on automated spray equipment or other equipment in the workshop, and before long, the risk may transfer to those freshly painted car surfaces. Using the CFD method, airflow can be simulated without unplanned shutdowns. This method of simulating the design prior to implementation enhances the feasibility of design modifications.

Analysis of car spray purification scheme If 10um of dust is mixed into the paint layer, the flaws caused by the dust can be seen by the naked eye. In order to ensure the paint quality of the car surface, the paint shop (paint shop) of the automobile factory uses a large number of air filters to remove the dust in the air of the painting and baking production lines. The car spraying line is generally a very long tunnel, and the fresh air enters the tunnel evenly through the filter top cotton - the function of the filter top cotton is to damp and equalize the flow, and its filtration level is generally F5. The main filter of the painting line is generally an ordinary bag filter, and its efficiency specification is F5~F8 (depending on the grade of the painting product). It is the primary filter at this stage, not the top filter layer closest to the paint tunnel, that determines the cleanliness of the painting environment. If the outdoor air contains a lot of dust, a pre-filter is required before the main filter. In the baking production line of the painting workshop, the incoming air should be preheated to about 200 ℃. Since the heating device may generate dust, the air filter should be placed on the hot air end, which requires the filter to withstand 200~ 250°C high temperature. The efficiency specification of the filter here is generally F7~F8. Junwei's high-temperature air filter products and solutions can provide a choice of high-efficiency, low-resistance filters for any drying tunnel air system.