• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a two-stage separate type pusher rod of a small punch creep tester, and more particularly, a small punch that can improve the reproducibility of creep test and the reliability of data by manufacturing and using a pusher rod of a small punch creep tester. A two stage split type pusher rod of a creep tester. To this end, in the pusher rod of the small punch creep tester, the upper metal pusher rod in which the upper portion of the creep tester contacting the load 4 is processed into a flange 3a shape while the protrusion 3b is processed in the lower portion thereof. (3); The lower alumina (Al 2 O 3 ) pusher rod (4) is processed to form a concave-convex coupling to the upper metal pusher rod (3), the pin shape (4a) in contact with the ceramic ball (8) at the bottom It provides a two-stage separate pusher rod of a small punch creep tester, characterized in that consisting of.
    公开号:KR20040055996A
    申请号:KR1020020082497
    申请日:2002-12-23
    公开日:2004-06-30
    发明作者:김영섭；정희돈；박재현
    申请人:재단법인 포항산업과학연구원；
    IPC主号:
    专利说明:

    CERAMIC PUSHER ROD OF SMALL PUNCH CREEP TESTER}
    [9] The present invention relates to a two-stage separate type pusher rod of a small punch creep tester, and more particularly, a small punch that can improve the reproducibility of creep test and the reliability of data by manufacturing and using a pusher rod of a small punch creep tester. A two stage split type pusher rod of a creep tester.
    [10] The Small Punch Test generally measures tensile parameters from load-displacement curves, and can measure the fracture-type transition temperature from the results of testing at various temperature ranges, and also the creep rupture strength at high temperatures. have.
    [11] The Small Punch Test is a method of measuring various mechanical properties of materials used in high-temperature equipment. Therefore, the micropunch test requires no special post-treatment after the operation is stopped or the specimen is collected. It can be called nondestructive testing method in.
    [12] Small punch creep tester used in the present invention, as shown in Figures 1 to 3, is a six-type small punch creep tester, the specimen 9 is placed on the lower specimen support (7), the temperature is raised to a specified temperature Temperature can be detected by the temperature sensor (6),
    [13] At a specified temperature, a ceramic ball (8) having a diameter of 2.4 mm is placed on the center of the specimen 9 having a size of 10 mm x 10 mm x 0.5 mm, and a load is applied to the six radially disposed pusher rods 1. The creep characteristics are analyzed by measuring the displacement amount over time.
    [14] In general, since the pusher rod 1 having the shape shown in FIG. 4A is exposed to the load 4 for a long time in a high temperature state, the pusher rod 1 is manufactured and used as a high-strength high-temperature metal material.
    [15] However, the end of the pusher rod 1, which pushes the ceramic sphere 8, has a pin shape 2 having a diameter of 2.4 mm x 10 mm, so that even if a high-strength material of high strength is used, FIGS. 4B and 4C are used. As shown in Fig. 2), the possibility of thermal deformation and fracture of the fin shape 2 is high.
    [16] Therefore, the reliability of the displacement change over time and the reproducibility of the test may be inferior.
    [17] In order to solve the above problems, the present invention is made of a ceramic ball contact portion processed by the pin shape of the pusher rod of the small punch creep tester made of a ceramic material having excellent heat resistance and high temperature strength, and then pusher rod made of metal on the upper portion thereof. The purpose of the present invention is to provide a two-stage separate pusher rod of a small punch creep tester, which can increase the reproducibility of the test and the reproducibility of the data by combining and fabricating the.
    [1] 1 is a side view showing a hex type small punch creep tester to which the present invention is applied;
    [2] 2 is a plan view showing a hex type small punch creep tester to which the present invention is applied;
    [3] 3 is a detailed cross-sectional view of the clamp of the small punch specimen grip;
    [4] 4 is a side view showing a conventional metal pusher rod and its deformation state of the small punch specimen grip clamp;
    [5] Figure 5 is a side view showing a two-stage separate pusher rod of a small punch creep tester according to the present invention.
    [6] ♣ Explanation of symbols for main part of drawing ♣
    [7] 4: Load 3a: Flange 3b: Projection 3: Upper metal pusher rod
    [8] 8: Ceramic Ball 4a: Pin Shape 4: Lower Ceramic Pusher Rod
    [18] In order to achieve the above object, the present invention provides a pusher rod of a small punch creep tester, the upper metal pusher rod in which the upper portion of the creep tester in contact with the load is processed into a flange shape, the lower portion of the pusher rod; While the shape is processed to be coupled to the upper metal pusher rod, there is provided a two-stage separate pusher rod of the small punch creep tester, characterized in that consisting of the lower ceramic pusher rod processed in the pin shape in contact with the ceramic ball.
    [19] The present invention also provides a two-stage separate pusher rod of a small punch creep tester, wherein the lower ceramic pusher rod is made of 100% alumina (Al 2 O 3 ).
    [20] Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the present invention.
    [21] Figure 5 is a side view showing a two-stage separate pusher rod of a small punch creep tester according to the present invention.
    [22] As shown in FIG. 5, the present invention provides a pusher rod of a two-stage split type small punch creep tester composed of a metal material 3 and a ceramic material 4 in two stages.
    [23] That is, the upper metal pusher rod 3 is manufactured using a high temperature metal material used for the conventional 100% metal pusher rod 1, and the upper end portion has a flange 3a shape so that the load 4 can stably contact. Processed into
    [24] The lower end portion is combined with the lower ceramic pusher rod 4 to be processed by the protrusion 3b at the center portion thereof.
    [25] The reason why the upper metal pusher rod 3 is processed into a conventional high temperature metal material is that the temperature of the temperature is high because it is separated from the contact area with the hot specimen 9 while obtaining impact resistance by the load 4. This is because it is not greatly affected.
    [26] In addition, when the entire pusher rod is processed into a ceramic material having excellent high temperature strength, not only the material cost and the processing cost increase markedly, but also when the ceramic material is manufactured to the upper part to which the load 4 is transmitted, the ceramic is brittle and awake. Since the top of the pusher rod is made of a high temperature metal material.
    [27] The lower ceramic pusher rod 4 is formed by processing a concave groove that can be inserted into a protrusion 3b formed at the lower portion of the upper metal pusher rod 3 manufactured as described above.
    [28] The reason why the lower ceramic pusher rod 4 couples to the lower portion of the upper metal pusher rod 3 is that the load 4 transmitted to the upper metal pusher rod 3 is stably lower ceramic pusher rod 4. Is to be delivered without mismatch.
    [29] In addition, the lower portion of the lower ceramic pusher rod (4) is formed in the pin shape (4a) integrally made of the same ceramic material so as to be in contact with the ceramic ball (8) to transfer the load (4) stably (9) The load 4 is transmitted to the ceramic ball 8 located at the top).
    [30] The material of the lower ceramic pusher rod 4 may be applied to a variety of high-temperature structural ceramics such as zirconia (ZrO 2 ), alumina (Al 2 O 3 ), but in the present invention, while exhibiting a sufficient low-temperature and sufficient high-temperature strength, Easy alumina (Al 2 O 3 ) was selected as the material of the lower ceramic pusher rod 4.
    [31] When using the two-stage separate pusher rod according to the present invention, the upper metal pusher rod (3) is inserted into the lower ceramic pusher rod (4), and then the load (4) is applied to the rod insert hole of the small punch creep tester. .
    [32] As a result of using the two-stage pusher rod according to the present invention applied to a small punch creep tester, it was found that the reproducibility of the test and the stability of data were about 5 times better than those of the conventional 100% metal pusher rod.
    [33] In particular, in the life of the pusher rod, the pin shape 4a in contact with the ceramic ball 8 hardly deforms or breaks, and thus, the life of the pusher rod is 10 times longer than that of the conventional pusher rod.
    [34] As described above, in the present invention, instead of the integral pusher rod made of high-strength high temperature metal material, the lower ceramic pusher rod forming a pin in contact with the ceramic ball is integrally formed with the upper pusher rod made of high temperature metal material. The use of the pusher rod can result in much lower costs than the manufacture of the entire pusher rod. The two-stage separate pusher rod can be used to increase the reproducibility of the test and the reproducibility of the data.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] In the pusher rod of the small punch creep tester,
    An upper metal pusher rod (3) on which an upper portion of the creep tester is in contact with the upper portion of the creep tester is processed into a flange (3a) shape, and a protrusion (3b) is formed on the lower portion;
    While the shape is processed to be coupled to the upper metal pusher rod (3), the lower portion is composed of a lower ceramic pusher rod (4) in which the pin shape (4a) in contact with the ceramic ball (8) is processed Two-stage pusher rod for small punch creep tester.
    [2" claim-type="Currently amended] The method of claim 1,
    The lower ceramic pusher rod (4) is a two-stage pusher rod of the small punch creep tester, characterized in that consisting of 100% alumina (Al 2 O 3 ).
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    同族专利:
    公开号 | 公开日
    KR100919003B1|2009-09-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2002-12-23|Application filed by 재단법인 포항산업과학연구원
    2002-12-23|Priority to KR1020020082497A
    2004-06-30|Publication of KR20040055996A
    2009-09-24|Application granted
    2009-09-24|Publication of KR100919003B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020020082497A|KR100919003B1|2002-12-23|2002-12-23|Ceramic pusher rod of small punch creep tester|
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