Pouring Method of Motor Coil Insulating Varnish
Insulating varnish is generally composed of paint, solvent or thinner and auxiliary materials composed of three parts, according to the use of the scope and shape are divided into: impregnated varnish, covering varnish, silicon steel varnish, anti-corona varnish four.
Pre-bake, the moisture discharge, the stator can be erected, and then with a brush, dip varnish, dripping along the slot, and then transferred over and then drop once, to paint from the bottom of the prevail. Finally, the bridge line are varnished. And then can be dried. Large workshop is the insulating varnish is generally composed of paint base, solvent or thinner and auxiliary materials composed of three parts, according to the use of the scope and shape are divided into: impregnated varnish, covering varnish, silicon steel varnish, anti-corona varnish four. Pre-bake, the moisture discharge, the stator can be erected, and then with a brush, dip paint, dripping along the slot, and then transferred over and then drop once, to varnish from the bottom of the prevail. Finally, the bridge line are varnished. And then can be dried. Large workshop is the stator completely immersed in the varnish, until the bubble discharge, hanging out of the stator control dry, into the drying box.
1. Pre-bake: To remove the coil moisture, must be pre-bake, the temperature should be controlled at 100-110 ℃, the time is generally 4-8 hours.
2. After pre-baking the core cold to 60-70 ℃ and then dip, must be immersed in the varnish around the varnish. Until you do not take bubbles. And then set aside vertically, dripping dry varnish, and then the core of the core part of the coil outside the varnish wipe clean.
3. Drying: I varnish drip dry, can be put into the drying room or oven baking, the temperature maintained at 100 ~ 110 degrees Celsius. Time to the size of the motor, drying, heating in two sections, began to use 60 ~ 70 degrees Celsius bake for some time, so that the solvent evaporation and internal drying, and then added to the baking temperature.
Important motor dipping is to be done twice.
