Lining Vibrator
In induction furnaces working face of the main crucible is lined with a suitable ramming mass. Furnace performance is directly related to the lining performance. Well-stabilized lining results in smooth working of furnace, optimum output and better metallurgical control. The lining practice best suited to particular foundry will depend upon the furnace capacity and design, metal being melted and output etc.
It is used for wall refractory ramming operation of coreless induction furnaces.
Furnaces, which have different capacities , can be rammed by only one machine with adjustable working diameter. Spring – loaded mechanism allows to ram conic formers. Double piston systems are preferred for 1ton to 50t capacity of coreless induction furnaces.
2/3/5 ARM LINING VIBRATOR
2/3/5 arm lining vibrators are used for side lining preparation, consist 2/3/5 vibrator cylinder and one air divider at centre of the equipment. It automatically rotates inside the former due to the angle of impact. It will take 1-2 hours for the full operation.
BOTTOM LINING VIBRATOR
Bottom Vibrator Unit ramming plate is equipped with one pneumatic vibrator.
Dry refractory is rammed in about 50 min. in one operation, achieving perfect compaction and absolutely even and levelled bottom.
REQUIREMENT OF A PROPER LINING:
Thermal characteristics:
It should with stand the stresses developed by the thermal cycle in operation. It should be chemically insert to the metal being melted: chemical inertness to molten metal can be achieved by using acid lining for acid slag & basic lining for basic slag. It should have enough structural strength to withstand operating conditions.
The thickness of refractory lining must be such as to ensure good electrical efficiency and thick enough to counter the risk of unexpected failure and major damage to the coil. It should have high erosion resistance.
ADVANTAGES
- Compacts bottom refractory material with equal density.
- Remove risks .such as cracks and gas pockets on refractory.
- Completes ramming operation in a very short time.
- Extends life of lining material (refractory).
- More melting done with the time saving.
- Manpower used more economic.
- Suitable for use in each capacity furnace.
