How to deal with jaws of several special materials of electronic universal testing machine

existElectronic universal testing machineThere will be several special types of materials, including the characteristics of the material itself and applicable environmental requirements when the sample is constantly jawed, inside the jaw, parallel section or outside the gauge distance. As of now, there are not many solutions. Jinan Huaheng Testing Equipment Co., Ltd. summarizes the following four seven situations:

In the sample of electronic universal testing machine, continuous jaw jaw, in parallel orgauge, there will be some special types of materials, and the properties of the material itself the applicable environmental requirements. As of now, the solution is not much. Jinan Huaheng Test Equipment Co., summed up the following four kinds of seven cases:

, steel wire and steel strand wire have high hardness and relatively loose internal structures. The stresses are uneven during the tensile experiment, and the jaws holding the sample are prone to wear. The fixtures have never been well solved. In the past, it was done by clamping aluminum foil. Four pieces of aluminum foil were needed in one experiment, which was a lot of waste. Now, an electronic universal tester fixture is used to spray the cartilage. The slipping problem has been solved, but the fracture orientation has never been ideal, and the success rate of 10 samples is only half.

First, steel wire, steel strand due to high hardness, the internal structure is relatively lax, during the tensile test of uneven force, clamping jaw is easy to wear specimens and other reasons, fixture has never solved. Before is the foil to do an experiment, you need fourpieces of foil, large waste. Now the fixture universal testing machine electronic sprayingemery, slipping problem has been resolved, but the fracture azimuth has not been ideal, 10root samples is half the success rate.

Second, the deformation of materials with large deformation is difficult to hold because of excessive deformation. The design of fixtures is a difficult point and the requirements for designers are higher.

Second, the large amount of deformation of materials because of large deformation, the electronic universal testing machine and clamping difficulty, is a difficult fixture design, the design personnel requirements higher.

Third, for experiments that need to be done in high temperature environments, the fixtures have strict requirements, and must be resistant to high temperatures and have no deformation and small size. Therefore, it is difficult for ordinary experimental machine manufacturers to solve the problem, but it consumes a lot of resources.

Third, to be in the high temperature environment to do experiment, fixture requirements more stringent, must not high temperature deformation and small volume, so the machine manufacturers in general, is more difficult, but to spend resources greatly.

Fourth, for large batch and high frequency experiments, fully automatic clamping is widely used abroad. For domestic experimental machine manufacturers, this problem needs to be solved and needs to be handled in combination with foreign technology.

Fourth, large quantity, high frequency experiment, foreign throughout using automaticclamping, on domestic experimental machine manufacturer, the problems to be solved,requires a combination of foreign technology to deal with.

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