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Method for measuring 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 problem that the continuous cooling phase change temperature cannot be measured, and achieves simple operation, low measurement cost and high measurement accuracy Effect

Active Publication Date: 2020-01-03
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for measuring the continuous cooling phase transition temperature of steel plates with a thickness≤0.6mm, which mainly solves the technical problem that the continuous cooling phase transition temperature of steel plates with a thickness≤0.6mm cannot be measured in the prior art

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  • Method for measuring continuous cooling phase transition temperature of ultra-thin specification thickness steel plate
  • Method for measuring continuous cooling phase transition temperature of ultra-thin specification thickness steel plate
  • Method for measuring continuous cooling phase transition temperature of ultra-thin specification thickness steel plate

Examples

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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

The invention discloses a method for measuring a continuous cooling phase transition temperature of an ultra-thin specification thickness steel plate for mainly solving the technical problem that thecontinuous cooling phase transition temperature of a steel plate having a thickness less than or equal to 0.6 mm cannot be measured in the prior art. The method for measuring the continuous cooling phase transition temperature of the steel plate having the thickness less than or equal to 0.6 mm provided by the invention comprises the steps of: 1) preparing a straight pipe test sample; 2) preparinga straight pipe small test sample; 3) installing a temperature thermocouple on the straight pipe small test sample; 4) placing the straight pipe small test sample with the temperature thermocouple installed at a measurement position of a DIL805A type quenching thermal dilatometer; and 5) measuring the continuous cooling phase transition temperature of a steel plate to be tested. By adopting the method disclosed by the invention, the phase transition temperature of the steel plate having the thickness less than or equal to 0.6 mm is measured by using the DIL805A type quenching thermal dilatometer, and the method disclosed by the invention is simple and convenient in operation, high in efficiency, high in measurement accuracy and low in measurement cost.

Description

technical field [0001] The invention relates to a method for measuring the solid phase transition temperature of iron and steel materials, in particular to a method for measuring the phase transition temperature of a steel plate with an ultra-thin gauge thickness during continuous cooling, in particular, it relates to a method for measuring the steel plate with a thickness ≤ 0.6mm by using a thermal expansion method The invention discloses a method for continuously cooling the phase transition temperature, which belongs to the technical field of metal material physical detection. Background technique [0002] At present, the main methods for measuring the continuous cooling phase transition temperature of iron and steel materials at home and abroad include metallographic method, thermal analysis method, calculation method and thermal expansion method. These methods have their own advantages, but there are also some defects. For example, the sampling workload of the metallogr...

Claims

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Application Information

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IPC IPC(8): G01N25/12G01N1/28
CPCG01N25/12G01N1/28
Inventor 黄绪传
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD