Avoid damage caused by sparks

Whether it is in manufacturing processes or in engineering: when pressure and heat result in small particles being emitted from welded surfaces, sparks are created. These can often be prevented by adapting the current or creating a protective atmosphere – but not always. These spatters are particularly troublesome when they adhere to the component. To avoid later problems in downstream processes such as insufficient coating and subsequent corrosion, the welding spatters are often removed manually. In these cases, high-quality coating solutions also offer a reliable solution.

To avoid quality problems and costly reworking, the application of a special coating such as DELTA-HEAT^® is advisable. This prevents the welding spatters from adhering to the substrate, thus ensuring a homogeneous surface. In the further process the DELTA-HEAT^® can be painted over, for example with KTL. The removal of the applied layer for later coating processes can also be achieved without problem using a high-pressure cleaner and standard solvents, lyes or acids – for example acetone, 5% sodium hydroxide solution or 5% hydrochloric acid.

Although standard zinc flake systems or galvanic systems offer superb cathodic corrosion protection, they are not suitable for applications where they are subjected to very high temperatures. However, if a zinc flake base coat is used – the DELTA-PROTEKT^® KL 120 is particularly well-suited – with DELTA-HEAT^® 300 as topcoat, very good cathodic corrosion protection is achieved at temperatures of up to 600 °C. In addition, this high-performance system also satisfies further requirements typical of OEMs – for example good adhesiveness, coatability, chemical resistance and mechanical resistance with subsequent corrosion exposure.