A method for measuring the continuous cooling phase transition temperature of ultra-thin specification thickness steel plate
A technology of phase change temperature and measurement method, which is applied in the preparation of test samples, investigation stage/state change, etc., can solve the problems that the continuous cooling phase change temperature cannot be measured, and achieve simple operation, low measurement cost and high measurement accuracy Effect
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Embodiment 1
[0027] Embodiment 1, with reference to figure 1 , figure 2 , image 3 , to measure the phase transition temperature of SPHE steel plate with a thickness of 0.6 mm during continuous cooling at 5 °C / s.
[0028] Thickness is the measuring method of the continuous cooling phase transition temperature of the SPHE steel plate of 0.6mm, comprises the following steps:
[0029] 1) Prepare a straight tube sample, cut the steel plate to be tested with a size of 30mm×60mm, use a coiling device to roll the steel plate into a straight tube sample, control the inner diameter of the straight tube sample to 2.8mm, and the outer diameter of the straight tube sample 4mm;
[0030] 2) Prepare a small straight tube sample, insert a steel rod with an outer diameter of 2.8mm into the straight tube sample, and cut the straight tube sample with the steel rod into a straight tube sample with a length of 10mm with a precision cutting machine sample, control the two side end faces of the straight tub...
Embodiment 2
[0035] Embodiment 2, with reference to figure 1 , figure 2 , Figure 5, to measure the phase transition temperature of SPHC steel plate with a thickness of 0.35 mm during continuous cooling at 10 °C / s.
[0036] Thickness is the measuring method of the continuous cooling phase transition temperature of the SPHC steel plate of 0.35mm, comprises the following steps:
[0037] 1) Prepare a straight tube sample, cut the steel plate to be tested with a size of 30mm×60mm, use a coiling device to roll the steel plate into a straight tube sample, control the inner diameter of the straight tube sample to 2.8mm, and the outer diameter of the straight tube sample 3.5mm;
[0038] 2) with embodiment 1 step 2);
[0039] 3) with embodiment 1 step 3);
[0040] 4) with embodiment 1 step 4);
[0041] 5) Measure the continuous cooling phase transition temperature of the steel plate to be tested, operate the DIL805A quenching thermal dilatometer, first heat the small straight tube sample to ...
Embodiment 3
[0043] Embodiment 3, with reference to figure 1 , figure 2 , Figure 7 , to measure the phase transition temperature of the SPHC steel plate with a thickness of 0.25 mm during continuous cooling at 20 °C / s.
[0044] Thickness is the measuring method of the continuous cooling phase transition temperature of the SPHC steel plate of 0.25mm, comprises the following steps, comprises the following steps:
[0045] 1) Prepare a straight tube sample, cut the steel plate to be tested with a size of 30mm×60mm, use a coiling device to roll the steel plate into a straight tube sample, control the inner diameter of the straight tube sample to 2.8mm, and the outer diameter of the straight tube sample 3.8mm;
[0046] 2) with embodiment 1 step 2);
[0047] 3) with embodiment 1 step 3);
[0048] 4) with embodiment 1 step 4);
[0049] 5) Measure the continuous cooling phase transition temperature of the steel plate to be tested, operate the DIL805A quenching thermal dilatometer, first hea...
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Abstract
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