industrial Surface spray solution liquid electrostatic spraying

Comparison of Industrial Surface Treatment Technologies: Analysis of Electrostatic Spraying and Traditional Spray Painting Processes and Film Thickness Specifications

1. Electrostatic spraying uses a high-voltage electrostatic field to selectively adsorb charged coatings, with a coating utilization rate of over 85%, significantly reducing material loss

2. Traditional spray painting relies on compressed air atomization coating, and about 40-50% of the coating is lost due to scattering, requiring frequent re spraying to increase costs

2、Key indicators of coating quality

1. The electrostatic coating has excellent uniformity and density, and the adhesion test results are generally more than 30% higher than those of the spray painting process

2. Traditional spray painting is prone to thickness fluctuations and requires multiple processes to compensate for defects such as orange peel and sagging

3、Industrial application scenario division

1. Electrostatic spraying is suitable for large-scale standardized production of automotive components, home appliance panels, etc., with a daily processing capacity of over 2000 pieces per line

2. Spray painting technology is more suitable for flexible demand scenarios such as engineering machinery maintenance and small-scale operation of irregular parts

4、Technical specification for electrostatic spraying film thickness

1. Functional coatings (anti-corrosion/insulation) require a minimum local thickness of 50 μ m, and the average film thickness of decorative surfaces such as vehicle painting should reach 80-150 μ m

2. The thickness of a single spray is affected by the conductivity of the coating, and the epoxy resin system usually achieves a film-forming effect of 20-35 μ m/pass

5、Key parameters for process optimization

1. The resistivity of the coating should be controlled within the range of 5-50M Ω· cm to ensure the electrification effect

2. The voltage of the spray gun needs to be adjusted according to the shape of the workpiece. Flat parts are suitable for 60-80kV, while complex structural parts need to be increased to 90-120kV

3. The curing temperature deviation should be strictly controlled within ± 5 ℃ to ensure crosslinking density

Mastering the core differences and regulatory standards between the two technologies can effectively improve the surface treatment qualification rate by more than 15%. It is recommended that companies conduct a comprehensive evaluation and selection based on production capacity requirements, product characteristics, and cost budgets.

What are the advantages of Hongda electrostatic rotary bell spray gun?

As an innovative equipment in the field of industrial spraying, the Hongda electrostatic rotary bell spray gun has the following core advantages:

1. Efficient spraying performance

Double stacked cup structure design: Adopting double stacked cup technology, it is easy to clean quickly and reduces the risk of paint hanging upside down to the motor, improving equipment stability

Ultra high speed: With an idle speed of up to 90000 revolutions per minute, it can accelerate to 30000 revolutions per second, suitable for high-speed production needs

High painting rate: By combining electrostatic adsorption and centrifugal atomization, the painting rate can reach over 96%, significantly reducing paint waste

2. Intelligence and Security

Anti drop design: Built in card slot structure to prevent the cup head from falling off during high-speed rotation, avoiding safety hazards

Quick color change: Complete color change within 5 seconds, support multi-color spraying requirements, enhance production line flexibility

Automatic cleaning function: reduces manual intervention and ensures the stability of continuous operation

3. Environmental Protection and Economy

Low VOC emissions: Electrostatic adsorption technology reduces paint scattering and environmental pollution

Coating savings: Compared to traditional spraying, it saves 40-50% of coating costs

4. Widely applicable scenarios

Complex workpiece adaptation: suitable for automotive body, hardware, shaped parts, etc., especially skilled in uniform spraying of large curved parts

Automation integration: can be combined with robots or reciprocating spraying machines to achieve high-precision profile spraying