The common metal wire generally refers to one or more common materials such as iron wire, steel wire, copper wire, aluminum wire, copper core wire, aluminum core wire and other common materials, made of metal wires of about 0.5mm to 2.5mm pass, depending on the use, must be tested for tensile strength to assess their products Whether the quality meets the requirements.
Tensile test preparation:
1. Prepare an electronic tensile testing machine (preferably mikrocomputer-controlled electronic universal testing machine, which can be connected to a computer and a printer), generally choose a model below 5000N, because the general wire tensile strength is not very high, and selecting a suitable range can ensure the accuracy of the test. For special materials with a tensile strength of over 5000 N, you can select a suitable electronic universal testing machine accordingly.
2. Prepare a piece of special metal wire holder. When the metal wire adopts the usual wedge-shaped jaws, the clamping part will be deformed, causing the specimen to break at the jaws, which cannot really and accurately reflect the tensile strength of the metal wire. However, if the special metal wire fixture is used, there will be no deformation of the clamping part and inaccurate testing, so the problemem of the bracket cannot be ignored.
3. Prepare wire cutters.
4. Prepare a printer
Work to prepare the tensile test: b>
Take the latest metal wire, the surface of the wire being smooth and free from scratches, burrs, no rust. Use a wire cutter to take 15-20 wire samples approximately 40mm long. If you want to test a batch of metal wires, you can prepare the samples givenif make more samples in batches. Mark in batches.
Voltage test mode:
1. Install the wire clamp on the Electronic Tensile Testing Machine, start the electronic universal testing machine, control the up and down movement of the machine, and make sure the testing machine is in good condition is.
2. Attach the cut wire pattern to the bracket and confirm the clamp.
3. Control the testing machine to start the tensile test.
4. After the test is complete, print all the data into a report and print it out to a paper report via the printer.
5. Turn off the machine, disconnect the power, and clean up the small parts on the test machine. So far the whole testing process is complete.