GJT30W large bearing heater

Large bearing heaters are suitable for rapid heating of workpieces with larger inner diameters
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Induction heaters use advanced electronic time (or temperature) control circuits to
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or
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℃) automatic timing (or constant temperature) according to the set value within the range. The upper limit of time (or temperature
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can be set. When heating the workpiece, when the set upper limit is reached, the heater will automatically cut off the circuit and issue an over-temperature alarm indication. Timing or constant temperature digital display, intuitive and accurate. The operator can know the temperature changes of the inner ring of the heated workpiece and the heating time changes at any time. During heating, only the workpiece is heated, while the heater itself remains at normal temperature. It overcomes the problems of channel damage, loud noise, reduced service life and environmental pollution caused by original installation methods such as hammering of workpieces, flame heating, and oil boiling heating.
. 1. Applicationbr/> '
Series heaters are mainly used to heat bearings, gears, ring gears, motor aluminum shells, pistons, connecting rod small ends, wheel centers, wheel hoops, etc. Types of metal parts are heated to expand to meet the needs of interference assembly or disassembly.
. 2. Structure and working principle
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Structure
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The series heaters are made of dry self-cooling It consists of a frequency induction heating device (hereinafter referred to as the host machine) and control equipment.
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Working principle
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, short circuit heating
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The host is a special structure Transformer, movable yoke is used to directly wear bearings or other heated workpieces. When working, turn on the power of the host, a short-circuit current is induced in the workpiece (equivalent to the secondary side group) and is heatedbr/> . '
, eddy current heating
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The heated workpiece and The iron core of the main machine forms a closed magnetic circuit. During operation, the workpiece generates eddy currents through the magnetic lines of the main machine and is rapidly heated.
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3.
Operating Procedures
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Place the workpiece between the main machine core and the yoke and ensure that the workpiece is in the middle of the core,
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make it close to the workpiece
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Put the function switch to the manual position, press the start button, the green light will be on, the red light will be off, and the host will work.
The timer starts timing. When the workpiece is heated to the temperature required for assembly, record the heating time and press the stop button. The red light is on, the green light is off, the host stops working, and the workpiece is ready for assembly
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. When heating workpieces of the same specifications in batches, just put the function switch to the automatic position,
set the timer to the time value recorded during manual heating, load the workpieces, and press the start button to start heating.
When the heating reaches the set time (that is, the required temperature rise value is reached), the heating automatically stops
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After the work is completed, turn off the branch air switch and the main air switch.
. 4. Product Classification
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Rotary
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Suitable for rapid heating of bearings, rings, and sleeves
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/> Open type
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Suitable for rapid heating of gears, couplings, bearing seats and other workpieces
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Vertical
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Type
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Lift heater
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Suitable for large workpieces with smaller inner diameter
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Horizontal
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Type
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Automatic feed heater (suitable for rapid heating of large workpieces with larger inner diameters)
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Well
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Mainly used for quick disassembly of bearing inner sleeves, wheel hoops, dust rings and other workpieces in the steel metallurgy and railway locomotive industries
. 5. Operation precautions
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Check whether the power connection method is correct and whether the voltage matches.
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It is strictly prohibited to start the induction heater for heating before grounding.
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It is strictly forbidden to operate the induction heater without workpieces in order to avoid large current overload and burn out the coils and electrical components in the control box.
. It is necessary to customize the heater and increase the number of workstations appropriately to reduce the overload operation of a single host.
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If the workpiece to be heated is cracked, it is strictly forbidden to heat it. After cracking, it will not form a closed loop and cannot be heated.
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. Correctly grasp the heating time. If the time is too short, it will cause problems such as installation and removal. If the time is too long, it will cause overheating and annealing.
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After an operation error, the workpiece can be allowed to cool completely naturally, and the heating time can be adjusted to reheat.
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After the inductor is heated, take the workpiece out of the inductor in time and wipe off the oil stains.