DST‑Deburr -DST-Chemicals

Cleaning after TEM and ECM

Thermal deburring is a technique increasingly used in the metal industry to remove burrs on not easily accessible metal items of steel or aluminium. Examples of not easily accessible areas are internal holes in hydraulic blocks.

Thermal deburring takes place in a closed chamber in a controlled explosion caused by high pressure and in the presence of oxygen and methane. In the explosion, the temperature reaches approx. 3,000°C where the burrs on the item are “burnt” away.

Subsequently, the item surface is coated with burning products in the form of metal oxides/rust. This coating has to be removed before any further processing takes place and is usually removed by strong acids such as phosphoric acid or sulphuric acid which pickles the metal oxides from the surface.

With this in mind, DST‑CHEMICALS has developed a product range to replace the otherwise well-known pickling baths. The products are pH neutral, readily biodegradable and do not irritate the skin.

The optimum result is achieved in a multistage washing plant with ultrasound in at least the first stage. Using these products will typically extend the bath life and the quality of the washed items is improved so that the items can be laser welded directly.

The products contribute to an improved environment, easier waste handling and improved and optimised processes and quality.

For more information about the products and access to MSDS, please e-mail us at: info@dstchemicals.com. Or call our sales support at +45 75 50 63 60.

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