Organization and production of powder spraying coating

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。

For small batch workpieces, manual powder spraying devices are generally used, while for large batch 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 that the sprayed workpiece has uniform powder coating and consistent thickness, and to prevent defects such as thin spray, leakage, and friction.

在涂装生产线这一工序，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。

In the process of coating 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 excess powder from solidifying on the hook. When it is difficult to remove excess powder before curing, the solidified powder film on the hook should be peeled off in a timely manner to ensure good conductivity of the hook and facilitate the next batch of workpieces to easily catch powder.

涂装线前处理工段的生产管理

Production management of the pre-treatment section of the painting line

前处理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，目前较为环保产品有无磷除油剂硅烷陶化剂钝化剂等等一系列无磷产品。

There are two pre-treatment processes: manual simple process and automatic pre-treatment process, which are further divided into automatic spraying and automatic immersion spraying. The workpiece must undergo surface treatment to remove oil and rust before powder spraying. There are a lot of fluids used in this section, and currently there are a series of environmentally friendly products such as phosphorus free degreasers, silane ceramic passivators, and other phosphorus free products.

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涂装前处理药剂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**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。

In the pre-treatment section or workshop of the coating production line, the first thing to pay attention to is to establish necessary regulations for the purchase, transportation, storage, and use of pre-treatment agents, provide workers with necessary protective clothing, safely and reliably store and transport equipment, and develop emergency measures and rescue methods in case of accidents. Secondly, in the pre-treatment section of the coating production line, due to the presence of a certain amount of waste gas, liquid, and other three wastes, it is necessary to configure exhaust and liquid extraction and three waste treatment devices in terms of environmental protection measures.

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，进行硅烷陶化或磷化处理：在喷粉前，还应将已处理好的工件进行干燥，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。

The quality of pre processed workpieces may vary due to differences in pre-treatment fluids and coating production line processes. A well treated workpiece should have its surface rust removed. In order to prevent rusting in a short period of time, it is generally necessary to undergo silane ceramic or phosphating treatment in several steps after pre-treatment. Before powder spraying, the processed workpiece should also be dried to remove surface moisture. Small batch single piece production generally adopts natural air drying, sun drying, and air drying. For large-scale assembly operations, low-temperature drying is generally adopted, using an oven or drying channel.

涂装线固化工序生产管理

Production Management of Coating Line Solidification Process

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。

The precautions to be taken in this process include: for sprayed workpieces, if they are produced in small batches, before entering the curing furnace, attention should be paid to preventing the powder from falling off. If there is any powder wiping phenomenon, the powder should be sprayed in a timely manner. Strictly control the process and temperature time during baking, and pay attention to preventing insufficient curing caused by excessive color difference or short baking time.

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或者直接使用脱漆剂。

For large batches of automatically transported workpieces, it is also necessary to carefully check whether there is any missed spraying or local powder wiping phenomenon before entering the drying channel. If unqualified parts are found, they should be properly closed to prevent them from entering the drying channel, and it is best to remove and re spray them as much as possible. If individual workpieces are not qualified due to thin spraying, they can be re sprayed and cured after curing out of the drying channel or directly used with paint remover.

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