Preheating equipment for hardbandig welding

Joint   wall thickness：

15～30mm

Joint   length：

250～460mm

Heating requirement：

Only heat drill pipe joint specified spot

Heating   length：

（100～150mm）

Heating   temperature：

60℃－450℃

Heating time：

15s－30s

Heating mode:

·                                   infiltrate   preheating

Electric   parameter：

Medium-frequency   power supply

160KW

Power supply frequency

1000Hz

Input current

105

Input voltage

3×380V   50Hz

Output voltage

750V

General   parameter:

Station number

1

Inductor adjusting

Adjusting bracket fine-adjustment

Inductor turns

Multiple turns

Inductor specification

ф101.6～ф139.7）1set

（ф152.4～ф177.8）1set

（ф203～ф241）1set

Cooling water flow

15 m³/h

Inflow temperature

5～35℃

Outflow temperature

＜55℃