KR20160058649A - A specimen for rapid cooling test using gleeble tester and gleeble test method using the same - Google Patents

A specimen for rapid cooling test using gleeble tester and gleeble test method using the same Download PDF

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KR20160058649A
KR20160058649A KR1020140160409A KR20140160409A KR20160058649A KR 20160058649 A KR20160058649 A KR 20160058649A KR 1020140160409 A KR1020140160409 A KR 1020140160409A KR 20140160409 A KR20140160409 A KR 20140160409A KR 20160058649 A KR20160058649 A KR 20160058649A
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South Korea
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cooling
specimen
test
simulation
rapid cooling
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KR1020140160409A
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Korean (ko)
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이향준
신용준
박춘수
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동국제강주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/42—Low-temperature sample treatment, e.g. cryofixation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44—Sample treatment involving radiation, e.g. heat
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/18—Performing tests at high or low temperatures

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
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  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
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  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

The present invention relates to a specimen for rapid cooling modeling for a Gleeble test and, more specifically, relates to a specimen for rapid cooling modeling for a Gleeble test to keep a vacuum status in a Gleeble chamber in the Gleeble test and to simultaneously realize a high cooling speed. According to an embodiment of the present invention, the specimen for rapid cooling modeling for the Gleeble test, comprises: a cylindrical specimen body unit; a thermocouple placed on a center of the specimen body unit; and a hollow unit in the specimen body unit, which is a penetrating type, and the Gleeble test method using the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rapid cooling simulation test piece for a glide test,

The present invention relates to a rapid cooling simulation specimen for a glide test, and a glide test method using the same. More particularly, the present invention relates to a glide test method for maintaining a vacuum state inside a glide chamber in a glide test, And a glide test method using the same.

In general, specimens for cooling tests refer to specimens used to achieve rapid cooling.

A conventional cooling test specimen includes a main body portion, an extension portion, a cooling portion, and a thermocouple.

A thermocouple is provided in the heating zone, which is the heated part in the center of the body, and the temperature is measured.

In order to cool the conventional specimen for cooling test, extensions are provided at both ends of the main body portion. And, the expansion part expands the hollow space into which the cooling part can be inserted.

The cooling part is formed in a cylindrical shape and is provided with a receiving part through which the cooling water can flow in and out. At this time, the receiving portion is in a hollow form.

That is, the conventional cooling test specimen having the above-described configuration is indirectly cooled by the cooling water flowing into and out of the accommodating portion which is the hollow portion of the cooling portion without directly contacting the heated heating zone with the cooling water. As described above, the conventional cooling test specimen using the indirect cooling method has a maximum cooling speed of only about 130 ° C / s.

In practice, the indirect cooling method of conventional cooling test specimens has a cooling rate of 130 ° C. or higher, while the surface cooling rate is about 300 to 600 ° C./s. / s, which is not sufficient to perform the cooling test of general steel.

In producing steels, microstructure control is indispensable for imparting desired strength and ductility to the steel, and for this purpose, it is important to set the temperature of the cooling step. Therefore, the larger the difference between the cooling rate of the test specimen for cooling test and the actual cooling rate of the steel, the different microstructures may be generated in the conventional test specimen and the steel material. In this case, after the test is completed, it is difficult to obtain accurate steel material properties through conventional cooling test specimens.

In order to solve such a problem, direct cooling test specimens which directly cool the specimen for the conventional cooling test to increase the maximum cooling speed are used.

Fig. 4 Fig. 4 The specimen for direct cooling test further comprises a nozzle capable of injecting cooling water to a specimen for indirect cooling test including a main body part, an extension part, a cooling part, and a thermocouple, and the nozzle is provided at the upper part and the lower part of the body part . In addition, the nozzle can be cooled rapidly by spraying the cooling water directly to the heating zone provided at the center of the main body to obtain a cooling rate of about 400-500 DEG C / s.

That is, the direct cooling test specimen, which is a direct cooling type, is capable of cooling the body portion at a higher speed than the conventional cooling test specimen, which is an indirect cooling method.

However, in the case of the direct cooling test specimen, since the method of directly injecting the cooling water is used, it is difficult to maintain the vacuum state in the vacuum state of the glazed chamber, and the inside of the gleb chamber There is a problem that it is difficult to make the vacuum state again. In addition, as the water directly touches the thermocouple attached to the surface of the heating zone, it is impossible to control the temperature during the cooling time, so that a given cooling curve can not be simulated.

Therefore, it is possible to achieve a cooling rate of about 600 ° C / s, which is the maximum cooling rate of the steel in actual operation, and to maintain the vacuum state in the glazed chamber during the cooling test, Cooling simulation specimens and Glyvel test method using them are needed.

Technical Solution In order to solve the above problems, a technical object of the present invention is to provide a method and a device for testing a grit test method for maintaining a vacuum state in a grit chamber by injecting cooling water into a hollow portion of a hollow cylindrical specimen, A rapid cooling simulation sample and a glide test method using the same.

According to an aspect of the present invention, there is provided a rapid cooling simulation specimen for a glide test, comprising: a cylindrical specimen body; A thermocouple provided at a central portion of the specimen body; And a hollow portion formed inside the body of the specimen, wherein the hollow portion is formed in a through-hole shape so that the cooling water flows into the one end and is discharged to the other end.

In one embodiment of the present invention, the maximum cooling rate of the specimen body may be 600 ° C / s or more.

According to an embodiment of the present invention, there is provided a method of testing a glazing using a rapid cooling simulation specimen for a glazing test, comprising the steps of: storing the simulated specimen in a chamber; A heating step of heating the simulation specimen; And a cooling step of supplying cooling water only through the hollow portion of the simulation specimen so that the vacuum in the chamber is maintained, thereby cooling the cooling specimen.

The effects of the rapid cooling simulation specimen for a glide test and the glide test method using the same according to the present invention will be described as follows.

First, according to the present invention, by increasing the maximum cooling rate of the rapid cooling simulation specimen for a glide test, it is possible to carry out the simulated test under conditions similar to the maximum cooling rate of the steel generally practiced in actual operation. That is, when cooling at a maximum cooling rate of 600 ° C / s, which is the maximum cooling rate of the steel in actual operation, the cooling test sample for rapid test of glide can be carried out at a cooling rate of 600 ° C / s, By setting the speed of the specimen to match, the accuracy of the simulated test can be increased.

Secondly, according to the present invention, the rapid cooling simulation specimen for a glide test can control the cooling rate at the same time while achieving a faster cooling rate than the conventional one. That is, since the cooling water does not reach the thermocouple, the temperature can be controlled during the cooling time.

Third, according to the present invention, it is possible to control the temperature during the cooling time so that the cooling curve can be simulated while maintaining a fast cooling rate.

Fourth, according to the present invention, it is possible to maintain a vacuum in the Gleeve chamber during the rapid cooling test. In other words, the cooling water is not injected to the outside of the specimen, but the cooling water is introduced into and discharged from the specimen, so that the cooling rate can be increased and the vacuum inside the glazed chamber can be maintained.

Fifthly, according to the present invention, the rapid cooling simulation specimen for the glide test can control the cooling speed, so that the cooling rate of the rapid cooling simulated specimen for the glide test is tested so as to correspond to various cooling rates of the steel material The accuracy of the simulation test can be increased.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a front view of a rapid cooling simulation specimen for a glide test according to an embodiment of the present invention.
2 is a flowchart of a method of testing a glide according to an embodiment of the present invention.
3 is a graph showing the results of a glide test when the cooling rate of a conventional cooling test specimen is at its maximum.
4 is a graph showing the results of a glide test when the cooling rate of the rapid cooling simulation specimen for a glide test according to an embodiment of the present invention is 600 ° C / s or more.
5 is a graph showing the results of the glide test when the cooling rate of the rapid cooling simulation specimen for a glide test according to an embodiment of the present invention is controlled at 400 ° C / s.
FIG. 6 is a graph showing the results of a glide test when the cooling rate of the rapid cooling simulation specimen for a glide test according to an embodiment of the present invention is controlled at 100 ° C./s.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when a part is referred to as "comprising ", it means that it can include other components as well, without excluding other components unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view of a rapid cooling simulation specimen for a glide test according to an embodiment of the present invention.

As shown in FIG. 1, the rapid cooling simulation specimen 1000 for testing a glue may include a specimen body portion 1100, a thermocouple 1500, and a hollow portion 1200.

The specimen body portion 1100 may have a cylindrical shape. However, the shape of the specimen body part 1100 is not limited to the embodiment, but can be easily changed according to the convenience of the operation. For example, the shape of the specimen body portion 1100 may take the form of a quadrangle. That is, the shape of the specimen body part 1100 may be included in the embodiment as long as the shape of the specimen body part 1100 is such that the penetrating hollow part 1200 can be provided therein.

A heating zone 1150, which is a heated portion, may be provided at the center of the specimen body portion 1100.

A thermocouple 1500 may be provided at the center of the specimen body 1100 and a thermocouple 1500 may be attached to the surface of the heating zone 1150. That is, the thermocouple 1500 can measure the temperature of the heating zone 1150.

The specimen body part 1100 may include a hollow part 1200 therein. In this case, the hollow portion 1200 may be a through-hole type.

The shape of the hollow portion 1200 is not limited to a circular shape but may be changed to an easy shape depending on the situation of the site. For example, the hollow part 1200 may be formed in a rectangular shape, or may be provided in an elliptical shape or the like.

In addition, the hollow portion 1200 may be provided to allow the cooling water W to flow in and out.

That is, by flowing the cooling water W through the hollow portion 1200 provided in the body 1100 of the specimen body, the heating zone 1150 provided at the center of the specimen body portion 1100 is in contact with the cooling water W, Cooling can be performed. In this case, the specimen can be cooled at a higher speed than the conventional indirect cooling method. That is, it is possible to obtain a cooling rate suitable for carrying out a simulated test on the cooling of the steel material to be carried out in the field.

The maximum cooling rate of the specimen body 1100 may be 600 ° C / s or more. Practically, when the steel material heated in the actual operation is subjected to rapid cooling with cooling water (W), the maximum cooling rate of the surface is about 600 ° C / s. Thus, the maximum cooling rate of the specimen body 1100 can be made to realize the maximum cooling rate of the steel.

Next, a glide test method for performing the rapid cooling test using the rapid cooling simulation sample 1000 for a glide test will be described with reference to the following drawings.

2 is a flowchart of a method of testing a glide according to an embodiment of the present invention.

As shown in Fig. 2, in the glide test method, the storing step S10 can be performed first. The storing step S10 is a step of storing the rapid cooling simulation specimen 1000 for a glazing test in a chamber (not shown). At this time, the chamber can be kept in a vacuum state.

After the storing step S10, the heating step S20 may be performed. The heating step S20 is a step of heating the rapid cooling simulated test specimen 1000 for the gleb type test. In particular, the heating zone 1150 provided at the center of the specimen body 1100 can be heated. At this time, the heating method may include all the methods that can be easily used in the field. For example, a method of heating the heating zone 1150 by passing an electric current may be used.

After the heating step S20, a cooling step S30 may be performed. The cooling step S30 is a step of supplying the cooling water W only through the hollow portion 1200 of the rapid cooling simulation sample 1000 to cool the rapid cooling simulation sample 1000 for testing glides. At this time, the temperature change of the heating zone 1150 can be measured through the thermocouple 1500 attached to the surface of the heating zone 1150. In the cooling step S30, the rapid cooling simulation specimen 1000 for the glazing test causes the cooling water W to flow in and out only in the hollow part 1200. Thus, unlike the conventional direct cooling method, The vacuum inside the chamber can be maintained.

For example, in the case of the conventional direct cooling test specimen, cooling water (W) is injected directly into the heating zone to increase the cooling rate. At this time, a part of the cooling water (W) remains in the glazed chamber, so that it is difficult to maintain the vacuum state inside the glazed chamber by the oxygen in the cooling water (W). Further, after the test, due to the residual moisture, it was also difficult to make the inside of the Gleeve chamber vacuum again. If the inside of the glazed chamber can not be maintained in a vacuum state, it may cause an error in the test result.

However, in the case of the rapid cooling simulation specimen 1000 for a glide test, since the cooling water W is introduced and discharged from the inside of the hollow portion 1200, there is a problem that the cooling water W flows into the inside of the glide chamber Do not. That is, it is possible to increase the cooling rate of the rapid cooling simulation specimen 1000 for the glide test and to keep the inside of the glazed chamber in a vacuum state.

Specifically, the cooling rates of the conventional cooling test specimen and the rapid cooling simulated test specimen 1000 according to one embodiment are compared.

First, the cooling rate of a conventional cooling test specimen can be confirmed with reference to the following drawings.

3 is a graph showing the results of a glide test when the cooling rate of a conventional cooling test specimen is at its maximum.

The horizontal axis of the graph shown in FIG. 3 represents the time in sec, and the vertical axis represents the temperature in degrees Celsius. The solid line is a cooling curve showing a temperature change when a conventional cooling test specimen, which is an indirect cooling system, is cooled at a maximum speed, and a dotted line is a cooling curve according to a set value of a gloss tester.

The cooling rate setting value of the glide tester of FIG. 3 is set to 200 ° C / 0.01s so that the temperature of 200 ° C is cooled every 0.01 seconds. At this time, the cooling rate of the gloss test machine was set at a rate of 200 DEG C / 0.01s in order to perform cooling at the maximum cooling rate. Specifically, it is difficult to physically cool the specimen for cooling test at a speed of 200 DEG C / 0.01s. Therefore, if a glue tester is set to a cooling rate of 200 ° C / 0.01s, the glide tester may attempt to cool at the maximum cooling rate in performance.

As shown in Fig. 3, the conventional cooling test specimen has a temperature of 940 占 폚 at 371.06 sec, but after the commencement of cooling, the temperature gradually decreases as compared with the set value, and becomes 217 占 폚 at 377.67 sec. That is, it can be seen that the conventional cooling test specimen starts cooling at 940 ° C and takes 6.61 seconds to reach 217 ° C. Calculating the maximum cooling rate of conventional cooling test specimens, the cooling rate is 5 to 6 times slower than the normal maximum cooling rate of 600 ° C / s of the heated steel in actual operation at 109 ° C / s. Therefore, it can be confirmed that the conventional cooling test specimen is not suitable for performing the rapid cooling simulation test.

Meanwhile, FIG. 4 is a graph showing the results of a glide test when the cooling rate of the rapid cooling simulation specimen for a glide test according to an embodiment of the present invention is 600 ° C./s or higher.

The horizontal axis of the graph shown in FIG. 4 represents the time in sec, and the vertical axis represents the temperature in degrees Celsius. The solid line is the cooling curve obtained when cooling the rapid cooling simulated test specimen 1000 for a glide test at a speed of 600 DEG C / s or higher as the first embodiment, and the dotted line indicates the cooling curve according to the set value of the glide tester to be. At this time, the setting value of the gloss tester is set to 200 ° C / 0.01s so that the temperature of 200 ° C is cooled every 0.01 seconds.

4, the cooling curve of Example 1 is about 940 占 폚 at 371.04 sec, but becomes 300 占 폚 at 372.06 sec rapidly after the start of cooling. In other words, it can be seen that the cooling of Example 1 starts at 940 ° C and takes 1.02 seconds to reach 300 ° C.

Based on the graph shown in FIG. 4, the cooling rate of Example 1 is calculated to be about 627 ° C./s. Usually, in the actual operation, when the steel material heated by the cooling equipment is subjected to the rapid cooling with the cooling water (W), the cooling rate of the surface of the steel reaches about 300 to 600 ° C / s. That is, the rapid cooling simulation specimen 1000 for grit test according to the first embodiment can realize the maximum cooling rate when the operation is performed in the field.

The rapid cooling simulation specimen 1000 for a glide test can increase the cooling rate and make it possible to cool the steel similar to the actual conditions of the steel as compared with conventional simulated specimens, thereby increasing the accuracy of the test. Specifically, in producing a steel material, control of the microstructure is essential for imparting the intended strength and ductility to the steel material, and the microstructure is influenced by the temperature of the cooling step. Therefore, if there is a difference between the actual cooling rate of the steel material and the cooling rate of the rapid cooling simulated test specimen 1000, the microstructures generated in the rapid cooling simulated test specimen 1000 and the steel material are different from each other It is difficult to obtain the exact material properties after the test is finished.

However, since the rapid cooling simulation specimen 1000 for a glazing test can realize the cooling rate corresponding to the maximum cooling rate in actual operation when cooling at the maximum cooling rate, the rapid cooling simulation specimen 1000 (1000) can obtain microstructures similar to those of the product. That is, the rapid cooling simulation specimen 1000 for a glide test can obtain a material property of a steel material more accurately than a conventional cooling test specimen.

Meanwhile, the cooling rate of the specimen body 1100 can be controlled. Specifically, the rapid cooling simulation specimen 1000 for testing glides can control the cooling rate of the specimen body 1100 by causing the cooling water W to flow in and out of the hollow portion 1200 only.

For example, in the case of a specimen for direct cooling test, cooling water (W) was injected directly into the heating zone to increase the cooling rate. Therefore, the specimen for the direct cooling test was unable to control the temperature during the cooling time by the cooling water (W) touching the thermocouple attached to the surface of the heating zone. Specifically, when the thermocouple measures the temperature of the heating zone, when the cooling water W comes into contact with the thermocouple, the temperature of the cooling water W causes the temperature of the thermocouple to be much lower than the temperature of the heating zone. Therefore, it is impossible for the thermocouple to measure the temperature while cooling is performed by injecting the cooling water W. Further, it is impossible to accurately measure the temperature of the specimen for the direct cooling test during the cooling time, so that the cooling rate can not be controlled during the cooling time. In addition, the direct cooling test specimen had difficulties in measuring the temperature during the cooling time, so that the cooling curve of the specimen for the direct cooling test could not be simulated.

However, since the cooling water W is not injected from the outside of the test piece body 1100, the cool cooling water test sample 1000 does not touch the thermocouple. Therefore, the rapid cooling simulation specimen 1000 for a glazing test has a faster cooling rate than a conventional cooling test specimen by a direct cooling method, the temperature can be controlled during the cooling time, and the cooling curve can be simulated.

For a more detailed description, reference may be made to the following drawings.

5 is a graph comparing the cooling rate of a steel material with that of a rapid cooling simulation specimen for a glide test according to an embodiment of the present invention when the cooling rate is controlled at about 400 ° C / s

The horizontal axis of the graph shown in FIG. 5 represents the time in sec, and the vertical axis represents the temperature in degrees Celsius. The solid line is the cooling curve when the cooling rate of the rapid cooling simulation specimen 1000 for glue testing is controlled to about 400 DEG C / s as the second embodiment, and the dotted line is the cooling curve corresponding to the set value of the gloss test machine to be. At this time, the setting value of the gloss test machine is 400 ° C / s.

5, the cooling curve of Example 2 is about 940 占 폚 at 371.04 sec, and becomes 200 占 폚 at 372.84 sec when the temperature gradually decreases after the start of cooling. That is, it can be seen that the cooling of Example 2 starts at 940 占 폚 and takes 1.8 seconds to reach 200 占 폚.

Based on the graph shown in FIG. 5, the cooling rate of Example 2 is calculated to be about 411 DEG C / s. That is, when the cooling rate of the glue tester is set at 400 ° C / s, the rapid cooling simulation sample 1000 for the glazing test is controlled at the cooling rate so that the test is performed at a cooling rate similar to the set value of the glue tester .

FIG. 6 is a graph showing the results of a glide test when the cooling rate of the rapid cooling simulation specimen for a glide test according to an embodiment of the present invention is controlled at 100 ° C./s.

The horizontal axis of the graph shown in Fig. 6 represents the time in sec, and the vertical axis represents the temperature in degrees Celsius. The solid line is the cooling curve when the cooling rate of the rapid cooling simulation specimen 1000 for grit test is controlled at about 100 DEG C / s as the third embodiment, and the dotted line is the cooling curve corresponding to the set value of the gloss test machine to be. At this time, the setting value of the gloss tester is 100 ° C / s.

6, the cooling curve of Example 3 is about 940 占 폚 at 371.07 sec, which is the same as the cooling curve of the steel material, and becomes 200 占 폚 at 378.37 sec when the temperature gradually decreases during cooling. That is, it can be seen that in Example 3, the cooling is started at 940 캜 and it takes 7.3 seconds to reach 200 캜.

Based on the graph shown in FIG. 6, the cooling rate of Example 3 is calculated to be about 101 ° C./s. That is, when the speed of the glue tester is set at about 100 ° C / s, the rapid cooling simulation sample 1000 for the glide test is controlled by the cooling rate so that the test is performed at a cooling rate similar to the set value of the glue tester .

5 and 6, it is possible to control the cooling rate so as to correspond to the cooling rate of the steel material in actual operation. In other words, it is possible to carry out a rapid cooling simulation test more precisely than the conventional test by changing the cooling rate according to the field conditions.

Therefore, the rapid cooling simulation specimen 1000 for grit test can realize a cooling rate corresponding to the cooling rate of the steel material at the time of cooling, thereby obtaining a microstructure similar to that of the product to be processed. That is, the rapid cooling simulation specimen 1000 for a glide test can obtain a material property of a steel material more precisely than a conventional simulated specimen.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

1000: Rapid cooling simulation specimen for Gleeve test
1100: specimen body part 1150: heating zone
1200: hollow part 1500: thermocouple
W: Cooling water S10: Storage phase
S20: Heating step S30: Cooling step

Claims (3)

In the rapid cooling simulation specimen for the glide test,
A cylindrical specimen body portion;
A thermocouple provided at a central portion of the specimen body; And
And a hollow portion formed inside the body of the specimen,
Wherein the hollow portion is formed in a through-hole shape so that the cooling water flows into one end and is discharged to the other end.
The method according to claim 1,
Wherein the maximum cooling rate of the specimen body portion is 600 DEG C / s or more.
A glide test method using a rapid cooling simulation specimen for a glide test according to claim 1 or 2,
A holding step of holding the simulation specimen in a chamber;
A heating step of heating the simulation specimen; And
And a cooling step of supplying cooling water only through the hollow portion of the simulation specimen so that the vacuum in the chamber is maintained, thereby cooling the cooling specimen.
KR1020140160409A 2014-11-17 2014-11-17 A specimen for rapid cooling test using gleeble tester and gleeble test method using the same KR20160058649A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106525563A (en) * 2016-11-10 2017-03-22 东北大学 Thermal simulation method of thermal-mechanical treatment of high strength automobile steel impact specimen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106525563A (en) * 2016-11-10 2017-03-22 东北大学 Thermal simulation method of thermal-mechanical treatment of high strength automobile steel impact specimen
CN106525563B (en) * 2016-11-10 2019-01-08 东北大学 A kind of thermo dynamic analogy method of high-strength vehicle steel impact specimen thermomechanical treatment

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