What’s phospho degreasing and what is it for?
Who needs phospho degreasing?
In this article, we will discuss the process of phospho degreasing, explaining what it is, how it differs from other pre-painting treatments, and the benefits of using it.
What is phospho degreasing?
Phospho degreasing is a preliminary treatment process used before the painting phase to protect metal surfaces from corrosion.
This method employs a phosphate-based detergent that combines both degreasing and phosphating actions.
The process effectively cleans and prepares the surface of the metal for subsequent painting, ensuring better adhesion and increased durability of the paint.
Key features of phospho degreasing
- Dual Action: the detergent used in phospho degreasing has both degreasing and phosphating properties, which simplifies the treatment process.
- Corrosion Protection: it aims to protect metal surfaces from corrosion, enhancing the lifespan and quality of the painted object.
- Less Aggressive: phospho degreasing is milder compared to other pre-treatment techniques like phosphating, which makes it easier to manage and balance.
Comparison between phospho degreasing and phosphating
Have you ever heard of phosphating? What is the difference between phosphating and phospho degreasing?
They are 2 similar treatments but not the same.
- Phosphating process involves multiple stages including cleaning, applying a phosphate layer, rinsing, and drying. It requires precise control of variables such as temperature, activators, and acidity.
- Phospho degreasing process uses a single product for cleaning and phosphating, making it simpler and less aggressive.
Phospho degreasing applications
Phospho degreasing is a process that develops in multiple stages:
Cleaning the piece.
Applying the phosphate layer and initiating the phosphating chemical reaction. In this phase, variables such as temperature, the intervention of activators, control of the phosphate's acidity level, and application pressure come into play.
- The rinsing phase, to remove any residues.
- The drying phase.
- Who needs phospho degreasing?
Phospho degreasing is particularly useful in the pre-painting treatment of metal components in various industries, including automotive (e.g., brake discs), furniture, mechanical components, and appliances.
It ensures that the surfaces are adequately prepared for painting, leading to improved paint adhesion and corrosion resistance.
Phospho degreasing systems advantages
Many companies choose to carry out phospho degreasing because:
- have reduced maintenance requirements;
- consume less energy compared to phosphating systems;
- are less burdensome in terms of initial economic investment and final wastewater management.
Advanced automation systems, such as those from DBM Tecnologie, can also make phospho degreasing systems adaptable to the pace of the production cycle and customizable.
