Technical Articles of Metal Wire Tensile Testing Machine

Technical Articles of Metal Wire Tensile Testing Machine

Metal materials include steel wire, barbed wire, stainless steel wire, copper wire, etc., mainly for tensile, tensile strength, breaking force, elongation, elongation, tensile strength and other mechanical properties test. Generally, the metal tensile testing machine in the universal tensile testing machine model is selected to complete the test. The metal wire tensile testing machine has an independent servo loading system, which automatically controls the testing force, displacement, and deformation in multiple modes, and completes the tensile, compression, and bending tests of the sample. In the process of long-term use, the test results are prone to errors. Common errors: 1. The main machine part of the metal wire tensile testing machine When the main machine part is not installed horizontally, it will cause friction between the working piston and the working cylinder wall, resulting in errors. . It is generally expressed as a positive difference, and as the load increases, the error produced is gradually smaller. 2. The dynamometer part of the metal wire breaking force testing machine When the dynamometer part is not installed horizontally, it will cause friction between the pendulum shaft bearings, which is generally expressed as a negative difference. The above two kinds of errors have a relatively large impact on small load measurement, but have a relatively small impact on large load measurement. Solution to error: 1. First, check whether the metal wire tensile strength testing machine is installed horizontally. Use a frame level ruler to level the host in two directions perpendicular to the outer ring of the column. 2. Adjust the front and back level of the dynamometer on the front of the pendulum bar, align and fix the edge of the pendulum bar with the inner engraved line, and use a level to lean against the side of the pendulum bar to adjust the left and right level of the body. The main application range of steel wire: cold heading steel wire for automobiles, cold heading steel wire for bearing, spring steel wire for mechanical field, steel wire for high-strength fasteners, cold heading wire for common fasteners, cold heading wire for bicycles.

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