Overview:(3112801)

The Type II reference block is a self-magnetizing body that does not require external magnetic field induction. It consists of 2 steel bars and 2 permanent magnets. It is used to test the performance of magnetic particles. The performance can be given by the displayed length. Increasing length means better performance. The cumulative length displayed on the left and right sides should be used as the result.

Conform to:

Q/CRRC J 73.1-2020, GB/T15822.2-2005 and IS09934.2-2:2002 standards.

Dimensions::

155*40*18mm

Manufacture:

1. Machine two pieces of C15⁹ (according to EN10083-1 ¹⁰)) square steel bars with a size of 10 mm square and 100.5 mm ± 0.5 mm long. A steel bar bracket and two protective washers (both non-magnetic materials) are machined to hold and protect the magnets.

2. Each steel bar is ground with a surface of Ra≈1.6μm and a flatness of <5μm. (Warning: The temperature of the steel bar should not exceed 50℃)

Verification:

Use a tangential field strength meter to measure the field strength perpendicular to the artificial defect at the +4 and -4 notches.

Acceptance criteria:

-4 notch exit strength value: -100A/m±10% (i.e. -0.125mT±10%mT)

+4 notch exit strength value: +100A/m±10% (i.e. +0.125mT±10%mT)

TMTeck Instrument Co., Ltd.(hereafter:TMTeck) is a leading NDT manufacturers and suppliers in Beijing China and provides innovative technologies and comprehensive know-how to benefit customers in a lot of countries around the world.Till now,TMTeck has been active in the areas of technology-driven inspection solutions that deliver productivity, quality and safety.

Began from the Ultrasonic Transducers and Coating Thickness Gauge ,now TMTeck has developed more than 10 series of testing instruments, including Ultrasonic Flaw Detector, Coating Thickness Gauge,Hardness Testers,Ultrasonic Thickness Gauge ,their accessories and other NDT instruments. These products are widely used in the analysis of materials that enable our customers to monitor, control and validate their critical processes and applications,also our goods has CE certificates.

TMTeck is committed to the maintenance of long-term partnership with our clients by offering unparalleled services, technology advice and assistance. We design and produce a wide range of high performance NDT equipment and accessories. With our continued emphasis on customer focus and global competitiveness, TMTeck has always been one of the top tier of world class companies when it comes to leading in NDT equipment. And we are developing new series products according to the market demand. We can offer good guarantee for our customers.

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