BATCH TYPE MACHINES - With heating by passing DC current through electrical winding and varnishing with trickle or dip n roll method.
In today’s competitive world the electrical insulation materials and the processes are viewed with tremendous QUALITY and COST consciousness as the performance and life of the electrical machines are affected by the quality of the varnishing. The varnishing quality mainly depends on following:
- Insulating & mechanical properties of varnish.
- Proper filling of gaps & voids.
To achieve & ensure the above two points during varnishing one should use the appropriate varnish & method depending on the geometry of the job. In the modern world the mainly resin impregnation method is used because of better mechanical & insulation strength of resin. Normally the resin & hardener mixture is used.
Normally Impregnation is done in following manner:
- Metered quantity of varnish is trickled on preheated rotating job.
- Preheated rotating job is dipped in varnish.
- By vacuum / pressure impregnation method.
Considering the geometry & quantity of the jobs required we have developed following types of varnishing machines. All machines are automatic with manual loading & unloading.