Our company holds immense experience in this domain and is involved in offering wide assortment of TBH - 25 Resistance Heating Machines.
Introduction:
The electric resistance heating is the least expensive way to change electricity into heat in any metallic object. In a furnace, the entire furnace has to be heated, the elements have to be heated, which in-turn many times heat a muffle which in turn heats the part in which heat is desired. Resistance heating is a more direct method of producing heat only in the object in which heat is needed.
Application:
Just a few of the applications would be; wire drawing, extruding, warm or hot heading, brazing, forging, upsetting, roll parts, heat treating, heating strip stock for shearing, for forming, drawing and rolling, soldering and general purpose heating.
Technical Specifications:
Primary/ power supply
Model
Units
TBH-25
TBH-50
TBH-100
TBH-250
Supply Voltage at 1 ph. 50 Hz
V
415
415
415
415
Input power at Max. current
KVA
25
50
100
250
Switch fuse
A
80
150
300
650
Current taps
No.
6
6
8
8
Duty cycle
%
100
100
100
100
Advantages:
Lower energy consumption.
Immediate start of heating operation.
Low scale formation.
No decarburization of the skin.
Good soaking of the bars.
Compact design, smaller outer dimensions.
No foundations required.
Shorter heating times with high temperature precision.
Electric Upsetter Machine is fully hydraulically operated with Resistance Heater.
Principle of Operation
Metal Gathering operation consists of heating the part of the job and pushing the remaining cold material of the job into hot zone till the required metal gathering takes place.
Simultaneous heating and forming in one machine.
Almost unlimited gather in one operation. The mechanical upsetting limitation of about 3 x dia. no longer applies. The modern engine valve has an upset length of up to 20 x dia. and lengths of upto 40 x dia. are commonly electro-upset.
No longitudinal flash is formed such as is unavoidable in a split-die mechanical upsettler.
No waste of heating energy or material. Outside of the upset volume can be precisely controlled to allow subsequent, "flashless" forging in closed dies.
Always ready for instant use, no warm up period.
Energy efficient, about 0.35 - 0.40 kwh / kg.
Minimal scaling because of simultaneous heating and gathering. Improved die life in subsequent forging operations.
No environmental pollution by emission of heat, fume or exhaust gas.
Free upsets can be finished forged without re-heating and so save time and energy.
Consistant heating temperature through the use of thyristor control.
Optimal grainflow and fault free surface. The unheated bar length remains unchanged.
