Overview
SHIBO QZW T-type bending tester is designed and manufactured according to the national standard GB/T1 2754-91, which is used to test the flexibility of coatings of colored steel plates and steel strips. This equipment is an important reference tool for evaluating coating performance and screening new coating formulations.
Features
1, according to the national standard GB/T1 2754-91 design and manufacture, the test results are reliable.
2, suitable for testing color steel and steel coating T-type bending test.
3. The first bending angle is less than 45 °, and the flattening mechanism Travel is greater than or equal to 10mm.
4. Film thickness can be tested from 0.5 to 1.0 mm.
Principle
By turning the left handle, drive the square bending press to bend the test piece into a shape less than 45 °. Rotate the right handle to drive the crank lifting mechanism to lift the triangular bending press to achieve clamping or flattening of the test piece, thereby completing T-bending.
Applications
T-bend test of color steel plate and steel strip coatings, T-bend test of related product coatings, coating flexibility evaluation, new product coating formulation screening
Steps
The sample size is 400 × 100 (mm), and it needs to be placed in a 23 +/- 2 ℃ environment for at least 24 hours before the test, and the test is carried out under the same conditions.
2. Rotate the right handle to lift the triangular curved compact (≥ 10mm); at the same time, rotate the left handle to make the square rotating dismantling block and the triangular curved compact form a state that is flat with the bottom surface.
3. Extend the sample plate facing down into the triangular bending press 15mm, turn the right handle to make the press block lower and press the test plate; turn the left handle to make the square turn the dismantling block to bend the test plate, forming a < 45 ° angle.
4. Rotate the left handle to return the square rotating stacking block to its original position; rotate the right handle to raise the triangular curved pressing block and take out the sample.
5. Extend the test plate with an angle of < 45 ° into the triangular curved compact, turn the right handle to lower the compact, and compact the angular end to form an "OT" bend.
6. Sexual repeability The above operation, pressing the "OT" bending part and bending and flattening, completes the "1T" test.
7. In turn, the repeability operation can obtain "2T, 3T" and other bends.
Notice
When the specimen is bent to 1T, there should be no obvious gaps where the bending surfaces overlap, otherwise the test needs to be redone.
• Damage to coatings within 10mm of the specimen edge is not considered.
• The two handles are not installed when the equipment leaves the factory, and the user needs to use a live wrench to install it to the corresponding position of the host and tighten it.
