Category: Tutorial

Pneumatic diaphragm pump is a volumetric pump that is driven by a compressed air source and enters through the air inlet and reciprocally deforms through the diaphragm in the diaphragm pump chamber. The working principle of pneumatic diaphragm pump is similar to reciprocating pump. For a long time after the appearance of pneumatic diaphragm pump, there are many inappropriate ways of using it safely and correctly. We have summarized some of problems we have encountered so far for basic guides to operators. Pay attention to the following when using pneumatic diaphragm pump: 1. Ensure the biggest particles contained in liquid do not exceed the pump maximum safe passage diameter. 2. The intake pressure should not exceed pneumatic diaphragm pump maximum allowable operating pressure. Excessive pressure of compressed air can cause…

Two pack paint mixing and dosing system is a unique entry solution for 2K applications. It is an economical, compact and easy-to-use system for a wide range of demands, including high viscosity materials and high delivery rates. The external magnetic stroke meter is an effective alternative to gear flow meters and allows mixing ratios up to 20:1 with a high ± 2 % precision. As a result, it is the perfect solution to mixing and applying 2K materials in the wood and metal industries, especially for protective coating requirements. The Working Scheme Two piston pumps supply the base (A) and the hardener (B).The stroke meters measure the quantity of the A and B materials delivered and send a signal to the electronic box. The system automatically controls an injection valve,…

Many customers are not sure about the conditions that need to be met before using electrostatic spray gun. Today, we will discuss about the conditions and tips of the electrostatic spray gun operation. 1. Painting room air flow speed When spraying with an electrostatic spray gun, it is recommended the air flow speed and exhaust volume of spray booth be less than normal air based spraying. Firstly, electrostatic spraying paint fog and solvent evaporation is small, does not need too high exhaust air volume. On the other hand, if air flow is too big, it will directly affect paint absorption force in electric field and affect the electrostatic effect. The general electrostatic spray gun, recommended air flow speed is 0.5 ~ 0.7 m/s. 2. Grounding requirements for electrostatic spray gun…

Paints are accompanied by a variety of hazardous factors, whether during handling, use or during the coating process. Paints may contain hazardous substances so lassified as dangerous. Inadvertent inhalation, contact or ingestion during use may cause injury and illness. These hazardous substances also include thinners, degreasers, paint strippers and dust generated by surface treatment activities. The main danger during spray painting process are fire and explosion, followed is by the equipment used, electricity, pressurized paint, heavy paint containers and noise. 1 - Harmful substances Hazardous materials include paints, thinners, equipment cleaners, degreasers, paint strippers, and products for surface treatment. Exposure to these harmful substances can cause short-term and/or long-term health effects. 1) Short-term impact. Irritant dermatitis; skin and eye burns; vomiting; nose, throat and lung irritation; headache, dizziness, fatigue. 2)…

When the coating is not properly adjusted, it will cause problems during spraying, which will affect the quality of surface treatment. Following is a list of some problems commonly encountered in the painting process and solutions to the problem. Sag: Overdilution. Cracking: The curing agent is used too much not properly matched. Orange peel: Add too much or less curing agent. Pinhole: too much curing agent, too high viscosity, etc. Causes and fix of coating problems 1- sag Overdilution. The coating is too thick at one time, the surface is uneven, unclean, complicated in shape or oily. The nozzle is too big or too close to object surface. Improper spraying speed. Solution Reduce the dilution ratio. Spray a few more times to avoid overcoating at one time. Sand object surface…

[vc_row][vc_column][vc_single_image image="771" img_size="full" alignment="center"][vc_column_text]Electrostatic spray gun is a popular device in modern spray painting industry. The biggest advantage is its affordable cost, paint and man power saving. Electrostatic spray gun brief introduction Electrostatic spray gun is a basic device in modern industrial spray equipment. In coating line system, electrostatic spray gun is core part of surface treatment. It's configured to spray paint efficiently using a low-pressure high-atomizing device and an electrostatic force generated by the device.So it is a paint atomizer as well as an electrostatic electrode generator. Working principle: The electrostatic spray gun is based on the principle of electric spray. Object is grounded as positive electrode, paint atomization device as negative electrode, paint atomization device with a high negative voltage, forming a static electricity boundary between the two…

[vc_row][vc_column][vc_single_image image="746" img_size="full" alignment="center"][vc_column_text]Robotic paint spray is fast growing for high quality and man power saving purpose. Especially for automotive industry, more than half painting service is handled by robot. Robotic spraying not only maintains the adaptation of manual spraying to complex shapes, but also accurate and repeatable. This article will discuss various factors affecting the final coating thickness during robotic spraying. Why coating thickness control? For coating applications, film thickness is the most important controlling factor in coating process as by following points: 1- Prevention of coating defects due to improper film thickness. According to experience, more than half of appearance coating are caused by improper film thickness control. Some common issues such as sagging, thin paint, and undercoating are directly caused by loss control of coating thickness. For…

[vc_row][vc_column][vc_single_image image="737" img_size="full" alignment="center"][vc_column_text]The ways of coating vary a lot from different industries, here we make a brief introductionto some popular solutions such as spraying, wiping, brushing, blade coating, roller coating and robotic coating etc. Let's take a look at their respective characteristics! Spray coating Spraying is a method of atomizing liquid coating then spray onto the product. Due to different atomization principles, it is divided into air based spraying, airless spraying, electrostatic spraying, robotic spraying etc. 1- manual spraying It is suitable for flat piece coating such as furniture, it needs to be combined with paint mixing and conveying equipment. 2- machine automatic spraying Suitable for most products mass painting requirements for high quality, combined with automatic paint pump and conveyor system. 3- electrostatic spraying It is suitable for…

[vc_row][vc_column][vc_single_image image="733" img_size="full" alignment="center"][vc_column_text] Paint Sprayer Overview The spray painting machine is a special coating equipment using spraying technology. The principle is this: air flow is instantaneously pushed to paint device, pneumatic motor is stably and continuously reciprocating to have inhaled paint pressurized, then paint is delivered to spray gun on the sprayer through a high-pressure hose then atomized by the spray gun and released to the object surface for coating. The spraying machine is mainly composed of a feeding device, a spray gun and an atomization generating source. Paint spryer is widely used in lots of industries such as leather, packaging, furniture, footwear, automobile and more. Sprayer working principle The main working part of the spraying machine is a double-acting pneumatic hydraulic booster pump, and the reversing mechanism is…

[vc_row][vc_column][vc_single_image image="728" img_size="full" alignment="center"][vc_column_text]Spray gun is the most important component for high quality spray painting. Thus its crucial to maintain it correctly and do quick fix when encountering outages. Here we provide a quick guidance on how to apply spray gun maintenance and some quick fixes to some common phenomenons. Spray gun maintenance and problem fix If spray gun is not cleaned immediately after use, the nozzle will be partially or completely blocked. Result is causing spray gun to spray dry paint fragments or paint atomizing in wrong way. It is especially true for enamel with additives. Because if not cleaned immediately after use, the enamel will harden inside spray gun. Spray gun maintenance guides It is best to lubricate spray gun parts after work every day. Seals, springs, needles…