Two suggestions are made for the verification of the tensile testing machine: 1. In the newly revised JJG475-2008 verification regulations, the verification cycle is made "the verification cycle of the tensile testing machine generally does not exceed half a year", which shows that the revision of the rules has fully considered this problem. Because the quality of the current tensile testing machine is very different, some of the newly manufactured tensile testing machines will also have the above problems. Therefore, it is recommended that for the initial verification and the tensile testing machine that has passed the adjustment, a half-year verification cycle report should be issued. After half a year, the certified tensile testing machine can be restored to one year. In this way, both its long-term stability and its indication changes in different seasons can be investigated. 2. For the verification of the tensile testing machine, it should be strictly in accordance with the requirements of the verification regulations, first pre-tension and compression 3 times under the maximum test force, and then perform the verification of the force value. Do n’t be greedy and reduce the number of pre-tension. At the same time, we must carefully observe whether there is a regular change in the verification indication value of each verification point, and analyze the reason to avoid misjudgment. The above two-point tensile testing machine verification recommendations are made by our quality control department based on long-term practical work experience, for your reference only.
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Two suggestions for the verification of tensile testing machine