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.

REQUIREMENT OF A PROPER LINING:

Thermal characteristics: it should withstand 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.

3/2 ARM LINING VIBRATOR

3/2 arm lining vibrators are used for side lining preparation, consist 3 vibrator cylinder and one air divider at center 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 leveled bottom.

COMPARISON MANUAL LINING V/S LINING USING VIBRATOR

MANUAL LINING

  • Erratic and shorter lining life
  • Unpredictable production
  • Density of Lining is not uniform
  • Lining thickness is not uniform around the former
  • Refractory material in the tapered Section of the former is not completely deaerated leading to non-uniform erosion of lining and problems like elephant foot & leakage

LINING USING LINING VIBRATOR

  • Consistent and enhanced lining life
  • Predictable and increased total output tonnage
  • Density of lining is uniform throughout the shell.
  • Lining thickness is absolutely uniform around the former
  • Material in the tapered section of the former is completely dense achieving max. & uniform compaction. Thus erosion is uniform in the tapered section eliminating any possibility of elephant foot & leakage due to weak lining.

MACHINE MODEL:

SM MODEL

  • LT01
  • LT02
  • LT03
  • LT04
  • LT05
  • LT06

CAPACITY (Furnace)

  • 300 Kg-500 Kg
  • 500 Kg-2T
  • 3T-6T
  • 7T-10T
  • 12T-15T
  • 20-25T

VIBRATOR

  • 2 Arm Vibrator
  • 2 Arm Vibrator tonnage
  • 3 Arm Vibrator shell
  • 3 Arm Vibrator around the former
  • 3 Arm Vibrator
  • 3 Arm Vibrator