Dhanaprakash Industrial Corporation

Kupwad, Sangli, Maharashtra

latest, strong, sturdy, plc/pc controlled heating quenching technology by dhanaprakash mn steel hardening, ss solution treatment, forging, quenching, tempering & normalising. Also available for pwht (post weld heat treatment) (n+q+t & q+t)

applications

• annealing
• normalising
• hardening
• solution treatment heating
• forge heating
• tempering
• aluminium solutionising
• stress relieving
• ductile iron full annealing
• adi (austempered ductile iron).

auto cycle control

• ramp, soak, cool . 8 steps profile
• 10, 20 profile memory
• multi inputmulti output (mimo)
• pid controlling action.
• plc based programmable controller.
• one burner, one thermocouple forms one pair as zone, thus multi zone control
• digital display for time temperature graph online with usb pen drive for data storage, wired lan pc connectivity for real time graph printing
• complete report generation by data logging & processing (scada).

firing

• high velocity short flame burner.
• direct on/offpulse firing effect.
• smokeless perfect combustion.

uniformity

• calibrated to api, ams, cq9, stm, asme, norsok
• national traceability (nabl)

the furnaces are calibrated for uniformity as per api 6a standard (the temperature difference between highest & lowest points at stabilised conditions should not be more than 13c.)

mechanization

• trolley - movement by geared motor with brake.
• door- movement by geared motor with brake, counter weighed,
• door lock unlock- innovative, pneumatically operated instant latching unlatching for perfect sealing.

construction

• strong rigid construction.
• heat resistant grade ci castings at door and frame, bogie and furnace interface eliminates warpage.
• railway rails for load bearing under temperature.
• triple sealing minimising heat losses.

insulation

• high temperature high density ceramic fibre monolithic anchored lining.
• self-supporting monolithic anchored extended door lining.

recuperator

• all fuel fired furnaces are equipped with recuperator to recover the heat from flue gases by preheating combustion air. By thumb rule a rise of 1500 c in combustion air 7.5% heat is recovered.

plc control

• large furnaces handle high value materials; it is essential to install plc for operation to avoid manual errors.
• plc checks each & every operation prior to loading of materials called booting to ensure air/gas/power etc. Are within the specifications & all the sensors are in working condition
• plc monitors each & every operation during auto cycle for supply conditions, flue temperatures burner operations any deviation is automatically notified audio visually & through scada.
• plc keeps event history for the record.

control panel

• aesthetically powder coated control panel.
• electrical switch gears for drives, burners.
• status indication and control.
• burner sequence controller and flame failure device.
• programmable start-up, burner, temperature controlling system.