Metallic inclusions in copper tubing may appear from two major sources.   The first one comes from the material itself which can contain residual impurities from continuous casting.  The second and major source of metallic inclusions in copper finned tubes occurs during the manufacturing process. They can appear in the tube when the tool used to make the fins is breaking.  Small particles of metal (tungsten) make inclusions on the OD or even through the wall.  This leads to potential leaks when heat exchanger tubes are mounted in the shell.  Metal inclusions such as filings from finning tools can be as small as 3 mg.

Therefore they are not commonly detected by using a simple eddy current coil.  In this instance a Magnetic Inclusion Detector (MID) must be introduced to the system for better results.

 

In order to detect such small inclusions, the MultiMac electronics uses a second channel connected to the second half of the coil sensor consisting of a single absolute winding located in the DC field and generated by the two permanent magnets.

• Surface, ID & OD
• Splits
• Broken Discs
• Metal Incrustation
• Inclusions
• Tears
• Pin Holes

2 Channel MultiMac®

MID- Magnetic Inclusion Detector

CP 10

“ZZ” Magnetic Dual Coil

3500 Pinch Stand

• Contains 4 to 8 channels
• Windows® based user interface
• Set up may be done in less than 10 minutes and only requires an adjustment of the headplate probes

In comparison to the previous system which only used 2 probes, the 750 rotary utilizes 4 probe arms that are each 90 degrees apart and each with 1 pattern allows for faster throughput speeds and the

independent control of each probe provides better results on billets that are off-center, bent, or on conditions of ovality.

 

The 750 RBT detects long, continuous surfacedefects and longitudinal notches or seams down to

The Magnetic Analysis ultrasonic billet inspection system makes it possible to ultrasonically inspect large bar product at production speeds. Each of the four test heads covers a quadrant of the bar or automatic mode, test heads extend and retract as the billet or bar passes through the system.

Coupling water is supplied to each testing head through an independent cooler/circulator to ensure consistent pressure and temperature. Individual flow controls regulate water supplied to the test heads.

The system includes Echomac® FD-5 ultrasonic instrumentation integrated with mechanics, transducers, bubblers and controls manufactured for Magnetic Analysis Corp. by Reliant Technologies Inc. The windows based FD-5 provides ease of use with a point and click interface. Setups are easily stored and recalled for all round and billet sizes. Up to 64 channels are available to meet the most demanding speed and inspection coverage requirements.

• Square Billet Inspection
• The system contains four test heads,
• one for each flat of the square billet
• Each of the four heads contains a lexan
• transducer shoe
• Each test head has three
• (expandable to four) transducer shoes
• Each transducer shoe has a single transducer
• containing four 2.25 MHz elements (one transmitter and three receivers)
• Transducer shoes move to allow a single head to inspect all sizes up to 9” (225 mm)
• Test head is flexible in all directions to allow
• coupling to be maintained on billets that are not straight
• Billet rides on the surface of hardened steel
• Each transducer shoe contains twelve (12) 5 MHz transducers
• Testing head contains carbide inserts
• to prevent wear
• Test head is flexible in all directions to allow
• coupling to be maintained on bars that are not
• totally straight
• wear plates

Ultrasonic inspection of hot rolled square

billets and round bars up to 9” (225 mm)

Echomac® FD-5 UT test electronics

with 48 channels, expandable to 64

Mechanics consist of 4 transducer

test heads, each with 3 surface ride

shoes containing 3 or 4 transducers,

and 1 bubbler for coupling purposes

Tracking and marking system

available to identify indications

Offline calibration station

Integrated water circulating and

cooling system

• 85 plus years of experience
• Superior test systems
• Knowledgeable fieldstaff
• In or off-line NDT equipment

Eddy current

Ultrasonic

Flux leakage

Custom systems

Material Handling

All NDT test methods have some limitation in regard to testing to the very end of a tube. These “untested ends” must be cut off, resulting in a substantial loss of product and revenue, or the manufacturer needs to develop a method to test these ends to meet the tube integrity requirement. Some industries require that the end be tested to a higher level of integrity because it is being expanded, threaded, or welded in the field, and end integrity is critical to the tube performance. MAC’s new UT End Tester provides a solution to this problem.

MAC’s Echomac FD-5 electronics provide the critical software for controlling the transducers and receiving, adjusting, analyzing, and reporting the test results.

The Echomac® UT End Tester consists of two independent, identical test stations designed to inspect the untested portion of a tube end. Generally this portion would range between 250 and 500mm from the tube end, depending on the

• Fulfills API 5CT & 5L
• Detects ID & OD longitudinal and transverse notches down to 5% of the tube wall
• Detects lamination 6.2mm FBH
• Measures wall thickness
• Innovative Automated Pitch Control
• Unique end plug cone follows unstraight tube ends

• Direct conversion of HL,HRB,HRC,HB,HV,HS; Conversion to tensile strength
• Direct display showing all functions and parameters
• With high accuracy and wide measurement for all metallic material
• Seven different kinds of impact device are available, distinguish automatically, no need calibration
• Inputting date, mark
• Software calibration
• Power charger and battery low indication
• Any test value can be printed directly
• Automatically switch off
• Easy to change rechargeable battery

Digital Universal Hardness Tester TH725 adalah alat penguji kekerasan yang mengkombinasikan teknologi canggih dari optical, mekanik dan teknok elektronik.

• Big LCD display shows stable and accurate results 
• Digital versatile hardness tester for Brinell, Rockwell, Vickers testing 
• Conversion among different hardness scales 
• Selection of dwell time and setting of time and date 
• Storage and printing function 
• RS232 interface for optional functions