The ageing of the mine cable sheath tensile strength test method research

The ageing of the mine cable sheath tensile strength test method research
Mine cable sheath should also be in accordance with regulations of the aging on the tensile strength according to the standard test, the test method is according to GB/T 2951 standard test method for the determination of tensile strength after aging, aging test conditions for specimens under 75 ℃ plus or minus 2. ℃ air aging box placed in 10 days, in its tensile strength measurement, test results for the tensile strength in front of the aging rate no more than plus or minus 30%, breaking elongation rate plus or minus 40%