DHF induction bolt heaters reduce working shifts for bolt loosening and tightening by improving work conditions and eliminating hazards. The heaters use induction heating coils to heat bolts quickly without damaging them. DHF offers the heaters for sale and provides on-site heating services and training. Their heaters are designed to heat hollow bolts and prevent seizing.

1. INDUCTION BOLT HEATER

2. DHF induction bolt heaters reduce working shifts for bolt loosening and
tightening. Our induction bolt heaters improve work conditions, eliminating
heavy hammering, burn injury hazards and the risk of bolt damage seen in
conventional methods.
Our standard heating coils are designed to prevent seizing, and highly flexible
special heating coils can be inserted into a hollow bolt, even with obstructions
above the bolt.
We sell induction bolt heaters and also provide on-site bolt heating services and
training programs for personnel in the operation of the equipment.

3. Features
Shortened heating time and working shifts, ensuring reduced downtime
Thermal expansion on flanges allows precise fastening quality
Water-cooled heating coils
Elimination of heavy hammering
Thread and stud portions are not heated to prevent seizing
Applicable to existing hollow bolts
Customers receive the special technical knowledge and methods that were jointly developed with
Mitsubishi

4. Applicable bolt sizes
 Outside diameter: 1.25 to 8 inch
 Center hole diameter: 9 to 56mm
 Bolt length: 150 to 1800mm

5. Principle
The high-frequency power supply flows to the heating coil and
the magnetic flux occurs. The eddy current passes to the bolt and
the joule heats up

6. Comparison of heating time

7. Project Overhaul GT2.2 PJB Gresik 2017

8. Project Overhaul GT2.2 PJB Gresik 2017

9. Office : Jl. Jend. Soedirman KM.32 No.18A Kota Bekasi ,
Telp : 021 885 0852, 885 0358, Fax : 021 885 0238
Hp: 0812 8081 0362