[ Hardening Line KNC/V and KLV ]

KNC/V+KLV hardening line for treatment of aluminium castings up to 600 °C

Hardening line KNC/V+KLV

The LAC KNC/V+KLV semi-automatic hardening line for processing aluminium castings is a combination of two units—a furnace, and a cooling bath. The line is suitable for the solution annealing of aluminium alloys with quick cooling in bath using water or water, water and a polymer. It can also be used for annealing and artificial ageing and also for curing.
The process is controlled by a programmable PLC that corrects the course of the temperature curve and the temperature of the water in the bath while synchronising the motion of the furnace, the door and the loading of the charge basket. This automatic line places a minimum of demands on the operator.

The KNC/V+KLV hardening line features very quick charge transport from the start of door opening until complete submersion of the charge. The full process can be done in just 15 seconds.


  • One line to handle the complete solution annealing process
  • Semi-automatic, user-friendly operation
  • Quick automatic transport of the charge into the hardening bath (within 15 sec.)
  • State of the art, high-quality insulation for low operating costs
  • Horizontal internal atmosphere circulation for even temperature distribution
  • Robust design for long service life

Standard equipment:

  • water cooling of bath
  • furnace for heat treatment
  • electrical furnace carriage
  • hydraulically controlled door opening towards the back
  • Simatic S7-1200 PLC with operator panel
  • “N” type control thermocouple
  • furnace limit unit

Optional accessories available at additional cost :

  • furnace for artificial ageing
  • ammeters for checking the status of heating elements
  • measuring loop calibration
  • RS232 or EIA485 interfaces (used for connecting the controller to a PC)
  • HtMonit set (software + interface)
  • expansion of line with second furnace
  • expansion of line with second bath (for differing cooling mediums)
  • heating and cooling of bath
  • preparation of furnace to meet the requirements of the AMS 2750 or CQI-9 standard
  • auxiliary roller track for automation of the cycle (eliminates the need for manual suspension of the charge on lifting equipment; the operator merely places the charge on the loading position)
  • servicing platform on the upper part of the furnace
  • gas heating for furnace
  • automatic greasing of lifting equipment chain
   Tmax*     Charge 
 External  dimension  Hardening 
 Input   Weight   Protection   Voltage 
°C °C (wxhxd)mm  -  - (wxhxd)mm kW kg  - V
KNC/V+KLV 200/60 600 200 5000x3100x3300 KNC/V 1000/60 KLV 2000 750x750x750 36 3700 80/3 400
KNC/V+KLV 400/60 600 400 5300x3600x4100 KNC/V 1800/60 KLV 4000 1200x1000x800 60 4500 125/3 400
KNC/V+KLV 1000/60 600 1000 6500x4000x4500 KNC/V 4900/60 KLV 12000 1500x1500x1500 90 6500 160/3 400

KNCV+KLV Hardening line.mp4

LAC Asia Limited Nathan Commercial Building 8-A 430-436 Nathan Road Yaumatai, Kowloon, Hong Kong
E-mail:  Tel: +852 8192 9862