Linear Motor For Float Tin Bath

The tin bath serves several functions. Not least of these is removing heat from the molten glass ribbon, which bas to be transported away from the glass and dispersed within the tin. For this and other reasons, control of tin flow within the tin bath can be a useful addition to the process control regime.

LIMOT systems uses a linear induction motor, mounted on a carriage, accompanied by a transformer and control panel. The motor itself comprises a long, water-cooled beam with the motor head mounted on one end. The other end of the beam is mounted on a 4-wheel carriage. The motor is comprised of a laminated stator with several windings of copper tubing inlaid in it. It is enveloped in a refractory casing that protects it from the heat within the tin bath. The copper tubing serves to carry both water and power from the transformer to the motor.  

With the beam inserted through the side seal of the tin bath, the lower face of the refractory casing lies just above the glass ribbon. With the motor on, the molten tin below the glass is forced to move. Both the direction and velocity can be readily controlled by adjusting the electrical inputs. Adjusting the height of the motor above the surface of the glass adjusts the depth of penetration of the motor’s effect into the tin.

Specifications for Limot-12:

12 poles

Overall Length: 5335mm

Head: 1380 x 260 x 150 mm

Specifications for Limot-06:

6 poles

Overall Length: 4735 mm

Head: 670 x 260 x 150 mm

At the exit end of the bath for de-dross by attracting liquid tin flowing into the de-dross pockets at the sides of the bath then back to the bath through sunk holes.

The limot-06T linear motor for de-dross

Two linear induction motors are installed on de-dross pockets situated at each side of the bath. They propel polluted tin into the de - dross pockets, forcing clear molten tin out of the submerged outlets of the pockets back into the bath. The dross accumulates in the pockets and can be raked out periodically.