Combination of Manual Powder Coating Line and Powder Curing Oven

The combination of manual powder coating line and powder curing oven is a small - scale powder coating equipment system centered on "manual operation + precise curing". It is mainly used to complete the spraying and curing forming of powder coatings on the surface of metal workpieces. It is widely suitable for small - batch production, irregular workpiece processing and customized coating needs, and is extensively applied in fields such as hardware manufacturing, agricultural machinery parts and medical device parts.

I. Composition of Core Equipment

This combination consists of two key units, each with clear functions and collaborative cooperation, forming a complete powder coating process chain:

Manual Powder Coating Line

Its core components include a closed spraying booth, a manual electrostatic spray gun, a powder recovery device and a simple conveying rack. Among them, the closed spraying booth can prevent the spread of powder and ensure a clean working environment; the manual electrostatic spray gun is controlled by the operator holding it, and through high - voltage static electricity, the powder coating is atomized and adsorbed on the surface of the grounded workpiece, and the spraying angle and coating thickness can be flexibly adjusted; the powder recovery device can collect the excess powder that is not adsorbed during the spraying process, realizing the recycling of coatings and reducing the cost of consumables.

Powder Curing Oven

As a key equipment for coating forming, it usually adopts electric heating or gas heating methods, and is equipped with an intelligent temperature control system and a hot air circulation device. The temperature control system can accurately set the curing temperature of 160 - 220℃ (adjusted according to the type of powder coating) and maintain a constant heat preservation time (generally 15 - 30 minutes); the hot air circulation device can ensure the uniform temperature inside the oven, avoid uneven curing of the local coating on the workpiece, and finally make the powder coating melt, level and cure into a hard and smooth protective film.

II. Core Functions and Operation Process

(I) Core Functions

Coating Spraying

Through manual operation, it realizes the precise spraying of workpieces, especially irregular and complex - structured workpieces. The coating thickness can be adjusted according to needs (usually 50 - 150μm) to meet the anti - corrosion, wear - resistance and appearance requirements of different workpieces.

Coating Curing

Through the precise temperature control of the curing oven, it ensures the complete curing of the powder coating, improves the adhesion, hardness and weather resistance of the coating, and ensures the service life of the workpiece.

Flexible Adaptation

It supports the switching production of small - batch and multi - variety workpieces, without complex equipment debugging, has a low operation threshold, and adapts to the production rhythm of small and medium - sized manufacturers.

(II) Typical Operation Process

Workpiece Pretreatment

The workpiece is manually degreased, derusted, washed with water and dried (manual operation can be used in some small - scale scenarios) to ensure that the surface of the workpiece is clean and dry.

Manual Spraying

The operator fixes the workpiece on the conveying rack, sends it into the closed spraying booth, holds the electrostatic spray gun and aims at the surface of the workpiece to spray the powder coating evenly. The excess powder is collected by the recovery device.

Curing Treatment

The sprayed workpiece is sent into the powder curing oven, and the curing program is started according to the preset temperature and time parameters. After the program is completed, the oven cools down automatically or the workpiece is taken out manually.

Cooling and Inspection

After the workpiece is taken out of the oven, it is cooled down to room temperature naturally. The appearance of the coating is checked manually (to ensure there are no defects such as sagging, pinholes and missing spraying). Qualified workpieces enter the next link, while unqualified workpieces are reworked.

III. Application Scenarios and Advantageous Features

(I) Application Scenarios

Small - batch Production

For example, the customized parts of small hardware factories and the parts renovation of agricultural machinery maintenance factories, etc., there is no need to bear the high cost of fully automatic production lines.

Irregular/Complex Workpieces

For workpieces with irregular structures (such as pipe fittings, brackets and irregular metal parts), manual spraying can flexibly adjust the angle to avoid the spraying blind area of automatic equipment.

Entrepreneurial/Experimental Production

When start - ups or laboratories develop new products, this combination can quickly complete the coating test of small - batch samples and reduce the trial production cost.

(II) Advantageous Features

Controllable Cost

The initial investment of the equipment is much lower than that of the fully automatic production line, and the energy consumption is low, which is suitable for small and medium - sized manufacturers with limited funds; the powder recovery device reduces the waste of coatings and further reduces the cost of consumables.

Flexible Operation

There is no need for professional automatic debugging personnel. Ordinary workers can take up their posts after simple training; there is no need to adjust complex parameters when switching workpieces, and the production efficiency is high.

Easy Maintenance

The equipment has a simple structure, and the vulnerable parts (such as the spray gun nozzle and the oven heating tube) are easy to replace, with low maintenance cost, reducing the equipment downtime.

Environmental Compliance

The closed spraying booth and powder recovery device can effectively control the spread of powder, meeting the environmental protection requirements; the powder coating has no solvent volatilization, which is more environmentally friendly than the traditional painting process and reduces the impact on the health of operators.