Coil Washing

Increasingly stringent pollution regulations limiting the type of solvents to be used and the difficulty of disposing of used material has prompted heating element manufacturers to find an alternative to the chlorinated solvents used to degrease coils after coiling.

Previously, the main problem was the use of mineral oils to help wind the wire around the spindle. To overcome this, CSM uses a water-soluble, biodegradable lubricant where most of the components are soap and a small amount of vegetable oils.

Our spiral washing system uses hot water and soap on modified conventional dishwashers to remove the small amounts of lubricant used during spiralling. Small because our lubricant is precisely used in a solution of 5% lubricant and 95% water.

The best results are obtained when the spirals have a slightly spaced winding so that water can flow between the spaces in the spiral wire. If the spirals are 'closed', it is not possible to remove all traces of the soap-based lubricant, but the results are comparable to those obtained with convention media (with chlorine solvents), since in such cases the solvent has difficulty cleaning the mineral oil residue between the spaces and inside the spiral.

Our spiral washing system includes a stainless steel rack, a washer unit, a drip unit and a drying coils unit. A water treatment system and gas or electric boiler are incorporated. In addition, the system has ten spiral trays.

The washing time can be programmed up to 12 minutes. The drying of excess water takes place in a fan forced oven whose temperature and time can be adjusted by the operator as required.

Technical characteristics