涂装生产线工艺流程分为：前处理、喷粉涂装、加热固化。
前期的生产
　　处理前有手动简易工艺和自动前处理工艺，后者又分自动喷淋和自动浸喷两种工艺。工件在喷粉之前必须进行表面处理去油去锈。在这一工段所用药液较多，主要有除锈剂、除油剂、表调剂、磷化剂等等。
　　在涂装生产线前处理工段或车间，第一要注意的就是制定必要的强酸强碱购买、运输、保管和使用制度，给工人提供必要的保护着装，安全可靠的盛装、搬运、配置器具，以及制定万一发生事故时的紧急处理措施、抢救办法。其次，在涂装生产线前处理工段，由于存在一定量的废气、废液等三废物质，所以在环保措施方面，必须配置抽气排气、排液和三废处理装置。
　　前处理过的工件质量，由于前处理液及涂装生产线工艺流程不尽相同，其质量当有差异。处理较好的工件，表面油、锈去尽，为了防止短时间内再次生锈，一般应在前处理后几道工序，进行磷化或钝化处理：在喷粉前，还应将已磷化的工件进行干燥，去其表面水分。小批量单件生产，一般采用自然晾干、晒干、风干。而对于大批量之流水作业，一般采取低温烘干，采用烘箱或烘道。
组织生产The process flow of the painting production line is divided into pre-treatment, powder coating, and heating curing.
Pre production
There are manual and automatic pre-treatment processes before processing, with the latter being divided into two types: automatic spraying and automatic immersion spraying. The workpiece must undergo surface treatment to remove oil and rust before powder coating. There are many chemicals used in this section, mainly including rust remover, oil remover, surface conditioner, phosphating agent, etc.
In the pre-treatment section or workshop of the painting production line, the first thing to pay attention to is to establish necessary regulations for the purchase, transportation, storage, and use of strong acids and alkalis, provide workers with necessary protective clothing, safe and reliable packaging, handling, and equipment configuration, and develop emergency response measures and rescue methods in case of accidents. Secondly, in the pre-treatment section of the painting production line, due to the presence of a certain amount of waste gas, waste liquid, and other three waste substances, it is necessary to install exhaust, liquid discharge, and three waste treatment devices in terms of environmental protection measures.
The quality of pre treated workpieces may vary due to differences in the pre-treatment liquid and coating production line processes. For well processed workpieces, the surface oil and rust should be completely removed. In order to prevent rusting again in a short period of time, phosphating or passivation treatment should be carried out in several processes after pre-treatment. Before powder coating, the phosphated workpiece should also be dried to remove its surface moisture. Small batch single piece production generally adopts natural air drying, sun drying, and air drying. For large-scale assembly line operations, low-temperature drying is generally adopted, using ovens or drying channels.
Organize production
For small batches of workpieces, manual powder spraying devices are generally used, while for large batches of workpieces, manual or automatic powder spraying devices are generally used. Whether it is manual or automatic powder spraying, it is very important to control the quality. To ensure even powder coating and consistent thickness of the sprayed workpiece, and prevent defects such as thin spraying, missed spraying, and wiping off.
In the painting production line, attention should also be paid to the hook part of the workpiece. Before entering the curing process, the powder attached to it should be blown off as much as possible to prevent the excess powder on the hook from curing. If it is difficult to remove the excess powder before curing, the cured powder film on the hook should be peeled off in a timely manner to ensure good conductivity of the hook and facilitate the powder coating of the next batch of workpieces.
Curing process
The precautions to be taken in this process include: for workpieces that have been sprayed, if they are produced in small batches, be careful to prevent powder from falling off before entering the curing furnace. If there is any powder scraping phenomenon, powder should be sprayed in a timely manner. Strictly control the process, temperature, and time during baking, and pay attention to preventing color difference, over baking, or insufficient curing caused by too short a time.
For workpieces that are automatically transported in large quantities, it is also necessary to carefully check for any missed spraying, thinning, or localized powder wiping before entering the drying oven. If any non-conforming parts are found, they should be carefully inspected to prevent them from entering the drying oven and removed for re spraying as much as possible. If individual workpieces are not qualified due to thin spraying, they can be re sprayed and re cured after curing in the drying oven.
The so-called painting refers to covering metal and non-metal surfaces with protective or decorative layers. The painting production line has gone through a development process from manual to production line, and to automatic production line. The degree of automation is becoming higher and higher, so the application of painting production line is becoming more and more widespread, and it has penetrated into multiple fields of the national economy.
　　对于小批量工件，一般采取手动喷粉装置，而对于大批量工件，一般采用手动或自动喷粉装置。无论是手动喷粉或自动喷粉，把住质量关是非常重要的。要确保被喷工件着粉均匀、厚度一致，防止薄喷、漏喷、擦落等缺陷。
　　在涂装生产线引这一工序，还应注意工件之挂钩部分，在进入固化之前，应尽可能将附着其上的粉末吹掉，防止挂钩上之多余粉末固化，有的对固化前去掉余粉确有困难时，应及时剥离挂钩上已固化之粉膜，从而确保挂钩导电良好，以利下批工件易于着粉。
固化工序
　　这一工序应注意的事项有：喷好的工件，如果是小批量单件生产，进固化炉前注意防止碰落粉末，如有擦粉现象，应及时补喷粉末。烘烤时严格工艺及温度、时间控制，切实注意防止色差、过烘或时间过短造成固化不足。
　　对于大批量自动输送的工件，在进烘道前同样要仔细检查是否漏喷、喷薄或局部擦粉现象，如发现不合格件，应把好关防止进入烘道，尽可能取下重喷。如个别工件因薄喷不合格，在固化出烘道后可以重喷再次固化。
　　所谓涂装即指对金属和非金属表面覆盖保护层或装饰层。涂装流水线经历了由手工到生产线、到自动生产线的发展过程，自动化的程度越来越高，所以涂装生产线的应用也越来越广泛，并深入到国民经济的多个领域。