How to use and maintain the fixture of tensile testing machine?

Tensile testing machine fixture use skills and tensile testing machine jig maintenance common sense tensile testing machine jig use skills.

1. For wedge-shaped fixture (universal clamp fixture), the specimen left and right alignment is operated by the fixture, but the front and rear but easy to install crooked, installed crooked in the stretching process on both sides of the specimen uneven force may tear the specimen or break point difference, early clamping specimen to keep the specimen parallel and vertical up and down.

2. Winding fixture can not appear in the line pressure line, for the lap specimen should make the lap surface through the center of the sensor force action. This will cause local stress concentration, often breaking from the pressure line resulting in poor breakpoint.

3. In the installation of the upper clamp specific, first connect the universal joint to the upper connection seat, and then connect the two to the upper beam, and then connect the upper clamp specific to the upper joint, and then connect to the universal joint through the fixed pin, and then tighten the lock nut. Put the upper clamp specifically on the lower clamp specifically, rise the middle beam by manual way, make the upper clamp specifically and universal joint assembly. At this time, should be careful to move the beam to avoid crashing parts. When installing the lower clamp specific, first the lower joint and the lower clamp specific connected, and then the two inserted into the guide rod, connected through the fixed pin, and then tighten the lock nut and connection nut to eliminate the gap after completion.

4. Clamp the specimen in accordance with the standard, must make the specimen correctly installed. Directly affect the success or failure of the test and the accuracy of the test data, should try to make the specimen force line of action and the sensor force line of action overlap.

Tensile testing machine fixture maintenance common sense.

1. Check before use tensile testing machine fixture is solid, competent clamping work

2. When the process is correctly installed clamping specimens, incorrect clamping is likely to damage the fixture

3. Fixture in the test after clear excess material, so as not to affect the next test

4. The fixture is stored well and properly coated with glycerin to prevent rust.

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