Components of painting production line

The seven components of the coating line mainly include: pre-treatment equipment, powder spraying system, paint spraying equipment, drying oven, heat source system, electric control system, suspension conveyor chain and so on. Before treatment, there are manual simple process and automatic pretreatment process, the latter is divided into automatic spraying and automatic dip spraying two processes. Workpieces in the powder spraying must be carried out before the surface treatment to remove oil and rust. In this section of the liquid used more, mainly rust remover, degreasing agent, table adjustment agent, phosphating agent and so on.

In the coating production line before the treatment section or workshop, the first thing to pay attention to is the development of the necessary strong acid and alkali purchase, transportation, storage and use of the system, to provide workers with the necessary protection of clothing, safe and reliable containment, handling, configuration of appliances, as well as the development of the emergency measures in the event of accidents, rescue methods. Secondly, in the coating production line before the treatment section, due to the existence of a certain amount of waste gas, waste liquid and other three-waste substances, so in terms of environmental protection measures, must be configured to pump gas exhaust, liquid and three-waste treatment devices.

Pre-treatment of the quality of the workpiece, due to the pretreatment fluid and coating production line process is not the same, its quality when there are differences. Handle better workpiece, surface oil, rust to the end, in order to prevent rust again within a short period of time, generally should be in the pre-treatment after a few processes, phosphating or passivation treatment: in the powder spraying before, but also should have been phosphated workpiece drying, go to its surface moisture. Small quantities of single-piece production, the general use of natural drying, sun drying, air drying. For large quantities of assembly line operation, generally take low-temperature drying, using the oven or drying channel. For small quantities of workpieces, generally take manual powder spraying device, and for large quantities of workpieces, generally use manual or automatic powder spraying device. Whether it is manual powder spraying or automatic powder spraying, it is very important to control the quality. To ensure that the workpiece being sprayed with uniform powder, consistent thickness, to prevent thin spray, leakage of spray, wipe off and other defects.

In the coating production line lead to this process, should also pay attention to the hook part of the workpiece, before entering the curing, should be attached to the powder as far as possible to blow off, to prevent the hook of the excess powder curing, some of the curing before the removal of the remaining powder is indeed difficult, it should be timely to peel off the hook has been cured on the powder coating to ensure that the hook of the conductive good, in order to facilitate the next batch of workpiece is easy to with the powder. This process should pay attention to the following matters: spray a good workpiece, if it is a small batch of single-piece production, into the curing oven before paying attention to prevent touching down the powder, such as the phenomenon of rubbing the powder, should be sprayed in a timely manner to make up for the powder. Strict process and temperature and time control during baking, pay attention to prevent color difference, over-baking or too short a time caused by insufficient curing.

For large quantities of automatic conveyor workpiece, before entering the baking channel should also carefully check whether the leakage of spray, spray thin or local powder phenomenon, such as the discovery of unqualified pieces, should be kept to prevent entry into the baking channel, as far as possible to take down the re-spraying. Such as individual workpieces due to thin spray unqualified, after curing out of the baking channel can be re-sprayed again curing.

The so-called coating refers to the metal and non-metallic surfaces covered with protective or decorative layer. Painting assembly line has gone through the development process from manual to production line, to automatic production line, the degree of automation is higher and higher, so the application of painting production line is also more and more widely used, and deep into the national economy in many fields.