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Specific operation process of tensile testing machine
Tensile testing machine has compact structure, simple and practical features, can be applied to materials tensile, compression, bending, shear, peel, tear load test, etc. Tensile testing machine in the host beam with high precision guide bar orientation, with high rigidity and good linear motion characteristic. Abundant fixture tooling, load force sensor, deformation measurement sensors such as attachments, almost all to consider the customer requirements. So, what are the specific process of tensile testing machine tensile test? Below to let us to know: 1, the tensile testing machine must be based on the appearance of the sample, specification and forecast the compressive strength to estimate strain, and force as in force plate measuring range of 40% ~ 80%, and to select suitable force plate and relative of the pendulum. Then, using the jig is consistent with the sample. 2, at the beginning of the test specimen gage length L0 category with a marker on the uniform 10 separation line, to facilitate observation in the category of radial deformation condition and sample from broken destroyed after measuring tensile strength. 3, choose circular specimen tensile testing machine, should be on both sides of the gage and right in the middle of two mutually vertical directions on the characteristics of a cross section diameter, take the arithmetic average, the diameter of the measured using three small value, and value measuring total area of the cross section. 4, install the sample, according to the tensile testing machine safety operation procedures to carry out the actual operation, will be shown in whose hands zero force plate, and will automatically drawing set equipment. After specific guidance teacher inspection can start test. 5, loading experiment in tensile testing machine, the whole process, the provisions of symmetrical load slow. In view of the tensile test sample, pay attention to observe the tensile process four links in various conditions. Record and compromise load glycoprotein Fel values, the load value Fm. Fm on cast iron samples, need to measure the load value. Sample is pulled immediately after shutdown, and take out the sample. 6, in view of the specimens after tensile, burst to each measurement range of dU LU and necking of small diameter. Measures of LU is: after the broken sample of each paragraph in the fracture surface are inseparable to connect: if the sample fracture is broken in the middle of the sample, measuring the original gage immediately as broken on both sides of the spacing distance. If fracture place to the adjacent range back line spacing of less than a third l0, you must use & other; Move method & throughout; To measure the LU. The way is: from the snap on long O take base is equal to the number of the long period of division at point B, then take is equal to the number of the long period of the residual lattice [ Dual, FIG. 2 15 ( a) ] Half of the point C; Or take the number more than [ 1, figure 2 - 15 ( b) ] Each half of minus 1 and + 1, C and C1 point. Move after the L1 as: AB + 2 BC or AB + BC + BC1. The interpretation of the above is a concrete operation process of the tensile testing machine, hope can help you, if you want to learn more about information about tensile testing machine, welcome to the online consulting service or call the company service hotline ( Website top right corner) For consultation, we will wholeheartedly provide high quality service for you! Tags: & nbsp tensile testing machine
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