How to strip the enamel off magnet wire without damaging the wire? Is there any new technology to weld enamelled magnet copper wire not to strip?

The existing enamel stripping and welding technology have following disadvantages on the production efficiency,safety,energy saving,welding quality.
1.Chemical enamel wire stripping is to wash and dissolve the wires so it is danger and corroded. Even if enamel wire stripping machine is to automatic strip off, it is still time consuming and production efficiency reduction of electric motors.
2.The existing welding process is adopt mixing gas cylinder (such as liquefied gas, propane gas, acetylene gas) and oxygen cylinder which belongs to hydrocarbon flame.The welding quality is not fasten and leading to poor insulation.
3.The price of fuel gas and oxygen gas is keep increasing, at the same time the filling weight is not enough, hard to control the gas cost.
4.Gas cylinders and oxygen cylinders are all pressure vessels, the consequence will be unthinkable once the gas was exploded.