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Magnetic Crack Detector Machine for Steel Bars

This machine is a wet horizontal bench-type unidirectional machine that generates circular magnetization meant for checking both bright & black rolled steel round bars. Circular magnetization is achieved by clamping the bar directly between the headstock & tailstock and passing current through it. The machine is capable of detecting longitudinal cracks only. The headshot current can be switched between HWDC & AC for the detection of subsurface & surface cracks. The machine is semi-automatic in operation. All operations, such as loading, spraying, magnetization, demagnetization & unloading, are automatic. The only manual operation is the inspection.

The machine has nylon rollers for placing & rotating the bar on the machine during the inspection.

Adjustable magnetization time of up to 2.0 seconds allows for the complete development of indications.

Available in various part lengths & diameter ranges.

The machine is provided with a dark room frame, hood & curtains so that inspection with fluorescent inks can also be carried out.

Features

Automatic loading from infeed bench.
Automatic unloading from outfeed rollers to separate OK/Reject stacks.
Magnetization, spraying & inspection all on one station.
PLC-Based Control. Fully automatic cycle for faster testing.
7 Inch Touch Screen for control.
Large Digital Ammeter with Retention.
Operator controlled an automatic double shot
50 Program memory to store settings for different diameters.
Error displayed on the touch screen for easy diagnostics.
Digital, stepless current control.
Heavy duty transformer.
Both sides have Pneumatic clamping.
Stainless Steel liquid storage tank.
Stainless Steel collection tray
Reverse agitation bath system.
Continuously movable tailstock with cam lock
Integrated decaying-AC demagnetization with automatic control
Feedback loop-based current control with current failure indicator.
Standard make PLC & HMI. Easily serviceable.

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Product Specifications

Headshot Current Capacity	Models staring from 4000A going up to 6000A
Maximum Part Length Accommodation	Staring from 5m going up to 10mm
Maximum Part Diameter	Staring from 16mm going up to 160mm
Maximum Part Weight	1200Kg
Storage Bath Capacity	50-150 L
Shot Time	Adjustable from 0.5 sec 2.0 sec
Power Supply	3 Phase 4 Wire 415V AC/220V AC
Frequency	50Hz or 60Hz
Pneumatic Pressure Required	4-6 Kg/cm2
Control Voltage	24V DC
Touch Screen Display Size	7” Diagonal

Product BENEFITS & APPLICATIONS

Benefits

Fully Automatic operation
SCR-based digital current control for accuracy & precision
Feedback loop ensures repeatability
Reverse agitation system keeps the powder always dissolved in the carrier fluid
Pneumatic clamping ensures no sparks
7-inch Touch Screen for operator comfort
PLC-controlled operation for faster & reliable testing
Low voltage output for operator safety
Operator controlled the Poka yoke for the demagnetization cycle

Applications

Bright Steel Bars
Black Steel Bars

Product models

Model

Head Shot Capacity

Maximum Bar Length

Minimum Bar Length

Maximum Bar Diameter

Minimum Bar Diameter

MK-40-400-BRT

4000A AC & HWDC

4m

2m

75mm

16mm

MK-50-600-BRT

5000A AC & HWDC

6m

2m

90mm

25mm

MK-60-C-800-BRT

6000A AC & HWDC

8m

2.5m

120mm

50mm

MK-80-C-1000-BRT

8000A AC & HWDC

10m

3m

160mm

75mm

Maximum Part Diameter

75mm

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