Gravity and low-pressure casting
Keeping the paint intact is essential for the quality of the castings.
To improve the smoothness of the molten metal and protect the paint, it is good practice to apply a dry powder lubricant at each production cycle.
Generally, the product used is a mix of talc. More sophisticated mixtures are used only in particular cases.
As the mix of talc is a magnesium phyllosilicate with a lamellar structure, it has excellent lubricant properties. Moreover, its chemical and physical properties help the correct temperature dissipation of the casting.
Talc has a melting point above 1000 °C. Therefore, it is important to pay attention to the method you use to apply it to the mould.
With the mix of talc, you don’t need to whiten the mould. You just need a micro-dosed layer of it to enhance the quality of the product.
The electrostatic efficiency of the equipment is essential to prevent the dispersion of the product into the environment. Note that the mix of talc must be supplied evenly to prevent unwanted thickness on the die surface and leave the roughness of the paint unchanged.
Altea’s Dry Lub System is the result of 20 years of experience in the foundry industry. This method meets the clients’ needs, whether used manually or automatically.
The electrostatic efficiency of the Dry Lub System ensures high performance and an even supply, preventing the product from dispersing into the environment. Note that the mix of talc must be supplied evenly to prevent unwanted thickness on the die surface.
Improved casting release
Long-lasting mould paint
Increased aluminium smoothness
Unaltered paint roughness
Improved temperature dissipation
HOW THE DRY LUB SYSTEM WORKS
The DRY LUB SYSTEM is intended exclusively for applying powder lubricants to the production process of light alloys. It is successfully used in gravity and low-pressure casting, especially to apply a mix of talc.
This operation facilitates the release of the molten workpiece, protects the mould’s paint and, more importantly, improves aluminium smoothness.
Altea’s patented powder supply system of the DRY LUB SYSTEM together with the excellent electrostatic efficiency allows for the precise and constant application of the talc without dispersions into the environment and accumulations on the shells.
Watch it in action
Why should I use the mix of talc?
Does dry lubrication provide immediate results?
Yes. In particular, you will appreciate it in the parts of the casting with a low thickness, where smoothness and speed are extremely important.
Why is flow speed so important?
Can the release agent alter paint roughness?
Does the talc leave additional thickness after a few moulding operations?