The expansion of the electronic tensile testing machine is beyond your imagination

The versatility of the electronic tensile testing machine is mainly reflected in its many functions. It can be used for different tests by adding different test aids. In addition, it can be used for more expansion (increased, widened) of the test space. Detection of materials. In short, the expansion of the electronic tensile testing machine is too powerful, so powerful that you can't imagine it.

The process of testing the shear resistance of a metal material, wire or rivet by an electronic tensile testing machine is the process of determining the shear strength of a sample from shear to fracture. The following small series introduces you to the specific test method steps.

First, the electronic tensile testing machine test preparation:

1. The number, size and cutting of the sample are not required according to the relevant technical conditions. For example, take no less than 6 samples in each batch of rivets, take 3 samples at 0.5m from the ends of each wire, and place them in the parts or When the sample is cut on other metal products, the number of samples per orientation in each part is not less than three.

2. It is additionally stipulated that for wires with a diameter greater than 6 mm, samples with a diameter of not more than 6 mm can be processed for testing. The wire is slightly curved and can be tapped straight on the wooden mat with a raft. However, in the straightening process, the effect of work hardening on performance should be reduced to a low level. The surface of the sample should be smooth and free from defects such as damage and rust.

3. The fixture uses double shear fixtures, and the shearing and supporting materials are made of high-strength alloy. The surface of the shear ring and the support ring is smooth, and the roughness value of Zui is 1.6μm. The edge is sharp and has no defect, and the thickness is 1.3d~3.0d.

4. The electronic tensile testing machine is tested by universal material tensile testing machine. The precision of the whole machine can reach 0.5. The center line of the fixture is consistent with the axis of the testing machine. The afterburning is continuous, stable and vibration-free. It is fully in line with GBT. Equipment requirements for 6400-2007.

The specific operation of the electronic tensile testing machine is as follows:

1. The room temperature test is carried out in the range of 10 ° C ~ 35 ° C, and the high temperature test is carried out at the specified temperature.

2. The shear test speed of the electronic tensile testing machine is not more than 5mm/min.

3. The high temperature sample directly measures the middle temperature of the sample with a thermocouple on the sample. The temperature deviation during the test meets the requirements of GB/T 4338.

4. The high temperature test sample is heated to the test temperature for no more than 1 h, the holding time is 15 min to 30 min, then the test force is applied, the large test force of the zui at the time of shearing is recorded, and the shear strength is calculated according to the relevant formula.

5. After shearing, if the specimen is bent, or the port is bleeding, such as wedge or ellipse, the test results are wireless and should be resampled for testing.

6. Organize the test report according to relevant experimental data.

Electronic tensile testing machine is widely used in all kinds of hardware, metal, rubber, footwear, leather, clothing, textiles, insulators, wire and cable, terminals and other materials to test its tensile, tearing, peeling, compression, Flexural shear resistance, three-point bending resistance and other physical properties.

Jiangsu Tianhui Testing Machinery Co., Ltd. is a professional service manufacturer engaged in material testing and testing equipment. It integrates R&D, design, production, sales and service, and provides solutions for material testing and finished product testing.