A method for eliminating PLC effect of aluminum alloy for automobiles assisted by pulse current
A technology of pulse current and aluminum alloy, which is applied in the field of aluminum alloy processing, can solve the problems of increasing production cost, energy waste, unfavorable industrial production, etc., and achieve the effect of eliminating PLC effect and improving surface quality
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Embodiment 1
[0019] In this embodiment, a pulse current treatment is applied to the 5182 aluminum alloy for uniaxial tensile deformation. Specific steps are as follows:
[0020] (1) Select the annealed 5182 aluminum alloy plate to make a standard uniaxial tensile sample, grind the surface of the sample to a bright finish, take three sections to measure the thickness of the gauge part of the sample, and the difference in thickness shall not exceed 2mm.
[0021] (2) Fix the output end of the pulse power supply at both ends of the tensile sample placed on the tensile machine, and set the strain rate of the tensile machine to 5×10 -5 the s -1 , the parameters of the pulse power supply are, the current is 100A, the frequency is 180Hz, and the pulse width is 180μs. At the same time, the control sample was at 5×10 -5 the s -1 Stretching without pulse current at tensile strain rate.
[0022] (3) Analyze the stress-strain curves of pulse current stretching and non-pulse stretching under the s...
Embodiment 2
[0024] In this embodiment, a pulse current treatment is applied to the 5182 aluminum alloy for uniaxial tensile deformation. Specific steps are as follows:
[0025] (1) Select the annealed 5182 aluminum alloy plate to make a standard uniaxial tensile sample, grind the surface of the sample to a bright finish, take three sections to measure the thickness of the gauge part of the sample, and the difference in thickness shall not exceed 2mm.
[0026] (2) Fix the output end of the pulse power supply at both ends of the tensile sample placed on the tensile machine, and set the strain rate of the tensile machine to 5×10 -5 the s -1 , The parameters of the pulse power supply are, the current is 150A, the frequency is 180Hz, and the pulse width is 180μs. At the same time, the control sample was at 5×10 -5 the s -1 Stretching without pulse current at tensile strain rate.
[0027] (3) Analyze the true stress-strain curves of pulse current stretching and non-pulse stretching under ...
Embodiment 3
[0029] In this embodiment, a pulse current treatment is applied to the 5182 aluminum alloy for uniaxial tensile deformation. Specific steps are as follows:
[0030] (1) Select the annealed 5182 aluminum alloy plate to make a standard uniaxial tensile sample, grind the surface of the sample to a bright finish, take three sections to measure the thickness of the gauge part of the sample, and the difference in thickness shall not exceed 2mm.
[0031] (2) Fix the output end of the pulse power supply at both ends of the tensile sample placed on the tensile machine, and set the strain rate of the tensile machine to 5×10 -5 the s -1 , the parameters of the pulse power supply are, the current is 200A, the frequency is 180Hz, and the pulse width is 180μs. At the same time, the control sample was at 5×10 -5 the s -1 Stretching without pulse current at tensile strain rate.
[0032] (3) Analyze the stress-strain curves of pulse current stretching and non-pulse stretching under the s...
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