Sample pull stress corrosion tester

Abstract

The invention relates to a sample pull stress corrosion tester comprising a bracket, a corrosion cup, weights, an upper traction rod and a lower traction rod. The sample pull stress corrosion tester is characterized in that the bracket comprises a transverse beam; the upper end of the upper traction rod is connected with the transverse beam and the lower end of the upper traction rod is connected with a sample; the upper end of the lower traction rod is fixedly connected with the bottom end of the corrosion cup and the lower end of the lower traction rod is provided with a weight base; the weights are stacked on the weight base; and a sample clamping device is arranged at the bottom of the corrosion cup. The upper part of the corrosion cup is further provided with safety ropes which are fixedly connected with the transverse beam. The sample pull stress corrosion tester has the beneficial effects that the structure is simple; detected data is accurate and reliable; and different alloy samples can be adjusted by the weights and the utilization is convenient.

Description

technical field [0001] The invention relates to the technical field of metal material detection, in particular to a sample tensile stress corrosion testing machine. Background technique [0002] In industrial production, tensile stress corrosion tests are required for materials used in key parts of some products. For example, the corbel beam applied to the "motor car" is the main component of the "motor car" assembly vehicle, which requires a high-strength, weldable, and corrosion-resistant 7N01 alloy. Before assembly, its corrosion resistance must be tested. The stress corrosion testing machines used in the past are bulky, expensive and complicated. Such as figure 1 As shown, it uses the lever principle to load the tension. Due to the error of the force arm, it directly affects the magnitude of the moment. The friction force of the three axes is constantly changing with the extension of time, and the degree of lubrication will also affect it. With the experimental effect...

AI Technical Summary

Problems solved by technology

Stress corrosion testing machines used in the past are bulky, expensive and complex

like figure 1 As shown, it uses the lever principle to load the tension. Due to the error of the force arm, it directly affects the magnitude of the moment. The friction force of the three axes is constantly changing with the extension of time, and the degree of lubrication will also affect it. the experimental effect

In addition, the verticality of the applied force will also vary from person to person, all of which obviously have many uncertain factors

Therefore, the obtained results need to be revised, and the amount of revision is more appropriate, and there is no conclusive standard stipulated in the standard. There are disputes in the actual testing work, and there must be differences between the supply and demand sides.

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