AC magnetic powder standard test block detailed explanation

The E-type magnetic probe AC ​​standard test block (also known as 3-hole AC test ring) is close to the Japanese B-type test block. The steel ring of the AC ring test block is made of soft steel with a carbon content of not more than 0.15%. The steel ring is lined with bakelite, which is sleeved on the copper rod. The steel ring is drilled with 3 holes with a diameter of 1mm, and the hole center distance The surface is 1, 1.5, 2 mm. It is suitable for testing the comprehensive performance (system sensitivity) of magnetic particle flaw detection equipment, magnetic powder, and magnetic suspension, and is also used to check whether the test conditions and operation methods are appropriate.

The diameter of the hole and the size of the hole center from the outer edge:

Instructions:

Use copper rods as the central conductor, magnetize by the rod penetration method, pass alternating current, and test by the continuous method, and observe the number of holes clearly displayed on the outer edge of the test block. The test block is only suitable for AC magnetization

Precautions:

1. Before using the test block, gently test the steel ring with soft paper or gauze

Wipe off the oil on the surface of the block, and connect AC power to both ends of the copper rod

Perform magnetization.

2. Please apply anti-rust oil after using the test block

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