Category: Tutorial

In the coating industry, UV mercury lamp and UV LED lamp are two mainstream ultraviolet curing light sources, and they have significant differences in technical principles, performance, and application adaptability. Based on the latest publicly available information (2026), the main differences are as follows： Core Differences Comparison Types of light sources and principles of luminescence UV mercury lamp: Ultraviolet light is generated by high-pressure mercury vapor discharge, and the spectrum is continuously distributed in a wide band (200–450 nm), including UV-A, UV-B and partial infrared thermal radiation. Its luminescence mechanism relies on arc excitation, and there is a waste of energy in the non-target band. UV LED lamp: based on semiconductor PN junction light, emitting narrow wavelength ultraviolet light, common peak wavelengths are 365 nm, 385 nm, 395 nm or…

How to control the quality of product surface painting by controlling spraying parameters in a high-temperature and high-humidity coating environment? Painting in a high-temperature and high-humidity environment is a severe challenge. Excessive humidity can cause the paint film to "whiten" (due to water vapor condensation), while excessive temperature can easily cause "dry spraying," "orange peel," or "sagging." To stably produce products with both acceptable performance and appearance, it is necessary to systematically adjust the spray gun parameters and film thickness control, supplemented by other key measures. The following is a detailed introduction on how to make systematic adjustments and related measures: I. Spray Gun Parameter Adjustment Strategy (1) Appropriately increase the atomizing air pressure (e.g., increase by 5-10%) Principle: Enhances the atomization effect, making the paint particles finer, which helps…

Piano black coating is a manufacturing technique that achieves a high-gloss, durable surface effect through multi-layer spraying and fine polishing processes. It is widely used in high-end products such as automotive interior parts. Its core principle lies in creating a mirror-like finish similar to piano lacquer through the superposition and processing of multiple layers. Its successful implementation depends on strict control of the environment, materials, and processes. Environmental Conditions Temperature: The spraying environment temperature should be controlled between 15°C and 25°C. Within this temperature range, the paint's viscosity and flow properties are optimal, preventing problems such as premature drying (e.g., orange peel) caused by excessively high temperatures or poor leveling caused by excessively low temperatures. Humidity: The relative humidity should be maintained between 50% and 70% (specific requirements may vary…

Adhesive spray machinery is no big difference than those well known solutions in spray painting industry. But it does have its stand alone features which will be explained in following chapter. Also, due to the various properties of different adhesive products, we will encounter a variety of issues and we will give trouble shooting solutions and suggestions of improvement. Adhesive Spraying Main System According to adhesive viscocity, there're following popular choice of spraying machinery: **Air-Powered Spraying Equipment:** Compressed air atomizes the adhesive (pressure 0.3-3.5MPa), suitable for low-viscosity adhesives (such as water-based adhesives). **Airless Spraying Equipment:** High-pressure pump directly atomizes the adhesive (pressure 0.4-0.6MPa), suitable for high-viscosity adhesives (such as epoxy resins). **Electrostatic Spraying Equipment:** An additional electrostatic field causes the adhesive to become charged and attract it (adhesive utilization rate…

Paint pump is a crucial device for any type spray painting system. When goes for an automatic paint machine setup, we mostly will select peneumatic diaphragm paint pump for its affordable and high performance over decades development. Though it's widely available to use, it's always necessary to understand it's principle and how we can properly configure a paint pump for problem free opertion. How does a diaphragm paint pump work? A diaphragm pump works by using a flexible diaphragm that moves back and forth to change the volume of a chamber, which forces fluid to move. On the "upstroke," the diaphragm creates a vacuum that pulls fluid into the pump chamber through a suction valve. On the "downstroke," it pushes the fluid out through a discharge valve. This action is…

As the saying goes, "If you want to do your job well, you must first sharpen your tools." Choosing the right spray gun caliber is crucial to achieving the best spray results. So, what factors influence the choice of spray gun caliber? Relationship between Caliber and Spray Results The spray gun caliber directly affects the fineness and coverage of the spray. Generally speaking, smaller calibers produce a finer spray atomization, making it suitable for delicate applications; larger calibers provide wider coverage, making them suitable for large-scale spraying. Common calibers include 1.3mm, 1.5mm, and 1.8mm. The choice of spray gun caliber should be adjusted based on the paint type, spray area, and application requirements. The following are general guidelines: Paint Type and Viscosity In addition to caliber, the paint type and…