公开(公告)号：US07705589B2

公开(公告)日：2010-04-27

申请号：US12033059

申请日：2008-02-19

申请人： Young Joo Kim ,  Bong Young Ahn ,  Seung Seok Lee ,  Young Gil Kim ,  Dong Jin Yoon

发明人： Young Joo Kim ,  Bong Young Ahn ,  Seung Seok Lee ,  Young Gil Kim ,  Dong Jin Yoon

IPC分类号： G01N27/82

CPC分类号： G01N27/9033 ,  G01N27/9013

摘要： A sensor for detecting surface defects of a metal tube solves a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube. The sensor includes a plurality of coils wound at a predetermined inclined angle. The plurality of coils is inserted into the inside of a metal tube. Alternating current is applied to the coils to measure a change in impedance of the coils due to a change in an eddy current generated in the metal tube, thus detecting a surface defect of the metal tube.

摘要翻译： 用于检测金属管的表面缺陷的传感器解决了常规涡流探针的问题，因为难以检测金属管的圆周方向的裂纹。 传感器包括以预定倾斜角度卷绕的多个线圈。 多个线圈插入金属管的内部。 交替电流施加到线圈以测量由于在金属管中产生的涡流的变化而导致的线圈阻抗的变化，从而检测金属管的表面缺陷。

公开(公告)号：US5647922A

公开(公告)日：1997-07-15

申请号：US553334

申请日：1995-11-22

申请人： Tai Woung Kim ,  Young Gil Kim ,  Shin Hwa Park

发明人： Tai Woung Kim ,  Young Gil Kim ,  Shin Hwa Park

IPC分类号： C21D7/13 ,  C21D8/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/14 ,  C22C38/38 ,  C22C38/58

CPC分类号： C21D8/0205 ,  C22C38/04 ,  C21D7/13 ,  Y02P10/212

摘要： A high manganese steel having superior hot workability is disclosed, in which small amounts of the alloying elements are added into a high manganese steel of Fe-Mn-Al-C system, so that the rupture strength of the grain boundaries of columnar crystals can be improved, thereby realizing an improved hot workability. Further, a process for manufacturing a high manganese hot rolled steel sheet is disclosed, in which the above mentioned high manganese steel is subjected to be controlled the initial hot rolling conditions during a hot rolling, so that large cracks would not be generated on the edges and on the surface of the hot rolled steel sheet. The process for manufacturing a hot rolled high manganese steel without any cracks includes the following the steps. That is, the process includes the steps of: preparing the ingot or the continuous casting slabs of the conventional Fe-Mn-Al-C steel with one or more elements selected from a group consisting of 0.0005-0.04% of B, 0.0005-0.050% of Ti, 0.0005-0.050% of Zr, 0.0005-0.040% of La, 0.0005-0.040% of Ce, and 0.0005-0.030% of Ca; heating the ingot or the continuous casting slab to a temperature range of 1150.degree.-1300.degree. C.; carrying out a hot rolling by applying a low reduction ratio below 7% per pass and an average strain rate below 2.0 sec.sup.-1 per pass, until a total reduction ratio reaches 40%; and carrying out a hot rolling by the high reduction ratio after reaching the total reduction ratio of 40%.

摘要翻译： PCT No.PCT / KR95 / 00027 Sec。 371日期：1995年11月22日 102（e）日期1995年11月22日PCT 1995年3月25日PCT公布。 第WO95 / 26423号公报 日期1995年10月5日公开了一种具有优异的热加工性的高锰钢，其中少量的合金元素被添加到Fe-Mn-Al-C系的高锰钢中，使得晶界的断裂强度 可以提高柱状晶体，从而实现改进的热加工性。 此外，公开了一种用于制造高锰热轧钢板的方法，其中在热轧期间对上述高锰钢进行初始热轧条件的控制，从而不会在边缘产生大的裂纹 并且在热轧钢板的表面上。 制造没有任何裂纹的热轧高锰钢的方法包括以下步骤。 也就是说，该方法包括以下步骤：用一种或多种选自以下的元素制备常规Fe-Mn-Al-C钢的锭或连续铸造板：0.0005-0.04％的B，0.0005-0.050 Ti：0.0005〜0.050％，La：0.0005〜0.040％，Ce：0.0005〜0.040％，Ca：0.0005〜0.030％ 将锭或连铸板加热至1150〜-1300℃的温度范围。 通过每次通过低于7％的低压比和每次通过低于2.0秒-1的平均应变速率进行热轧，直到总减速比达到40％; 并且在达到总减速比40％之后通过高减速比进行热轧。

公开(公告)号：US11659901B2

公开(公告)日：2023-05-30

申请号：US17327902

申请日：2021-05-24

申请人： Young Gil Kim

发明人： Young Gil Kim

IPC分类号： A44C9/00

CPC分类号： A44C9/003

摘要： A ring with a rotation and a lock function to display multiple anniversaries, the ring comprising: a main ring including engagement areas and distant areas between the engagement areas; a sub ring rotatably engaged with the main ring, and engagement members positioned between the main ring and the sub ring, wherein the subring includes a receiver receiving the engagement member and including a first to fourth side with an opening area; wherein a length of the opening area is shorter than that of the first side; wherein the engagement member is made of elastic materials and positioned in the receiver; wherein when the opening area is aligned with the engagement groove area, the engagement member is protruded from the receiver and engaged with the engagement groove; wherein when the opening area is aligned with the distant area, the engagement member is inserted in the receiver.

公开(公告)号：US11142881B2

公开(公告)日：2021-10-12

申请号：US15747359

申请日：2016-08-29

申请人： Young Gil Kim

发明人： Young Gil Kim

IPC分类号： E02F3/30 ,  E02F3/38 ,  E02F9/00 ,  E02F3/32 ,  E02F9/22 ,  F15B11/16 ,  F16H1/06 ,  E02F3/42

摘要： An excavator having a rotatable arm is disclosed. The excavator includes: a vehicle body configured to have a hydraulic pump; a boom connected to the vehicle body at one end thereof; a boom cylinder coupled between the vehicle body and the boom, and configured to receive hydraulic energy from the hydraulic pump and operate the boom; an arm connected to the other end of the boom; an arm cylinder coupled between the boom and the arm, and configured to receive hydraulic energy from the hydraulic pump and operate the arm; a bucket connected to an end of the arm; and a bucket cylinder coupled between the arm and the bucket, and configured to receive hydraulic energy from the hydraulic pump and operate the bucket. The arm includes: a first body, a second body, and a rotation module configured to enable the rotational movement of the second body.

公开(公告)号：US20110041032A1

公开(公告)日：2011-02-17

申请号：US12674492

申请日：2008-08-19

申请人： Young Gil Kim ,  Norman C. Beaulieu

发明人： Young Gil Kim ,  Norman C. Beaulieu

IPC分类号： H03M13/11 ,  G06F11/10

CPC分类号： H03M13/1125 ,  H03M13/6502

摘要： Two hybrid message decoders for low-density parity-check (LDPC) codes are proposed. One decoder uses a posteriori probability ratio (APPR) and a posteriori probability difference (APPD), and the other decoder uses a logarithm a posteriori probability ratio (LAPPR) and a logarithm a posteriori probability difference (LAPPD) as hybrid message. Since the variable node and check node processing can be readily done using APPR and APPD, respectively, the proposed decoders have lower complexity than the conventional decoder that uses LAPPR only as a message.

摘要翻译： 提出了用于低密度奇偶校验（LDPC）码的两个混合消息解码器。 一个解码器使用后验概率比（APPR）和后验概率差（APPD），另一解码器使用对数后验概率比（LAPPR）和对数后验概率差（LAPPD）作为混合消息。 由于可以使用APPR和APPD分别容易地完成变量节点和校验节点处理，因此所提出的解码器比仅使用LAPPR作为消息的常规解码器具有更低的复杂度。

公开(公告)号：US20090206830A1

公开(公告)日：2009-08-20

申请号：US12033059

申请日：2008-02-19

申请人： Young Joo KIM ,  Bong Young Ahn ,  Seung Seok Lee ,  Young Gil Kim ,  Dong Jin Yoon

发明人： Young Joo KIM ,  Bong Young Ahn ,  Seung Seok Lee ,  Young Gil Kim ,  Dong Jin Yoon

IPC分类号： G01N27/82

CPC分类号： G01N27/9033 ,  G01N27/9013

摘要： Disclosed herein is a sensor for detecting surface defects of a metal tube, which can solve a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube.For this purpose, the present provides a sensor for detecting surface defects of a metal tube, the sensor including a plurality of coils wound at a predetermined inclined angle, wherein the plurality of coils is inserted into the inside of a metal tube and an alternating current is applied to the coils to measure a change in impedance of the coils due to a change in an eddy current generated in the metal tube, thus detecting a surface defect of the metal tube.

摘要翻译： 这里公开了一种用于检测金属管的表面缺陷的传感器，其可以解决常规涡流探针的问题，因为难以检测金属管的圆周方向的裂纹。 为此，本发明提供了一种用于检测金属管的表面缺陷的传感器，该传感器包括以预定倾斜角度缠绕的多个线圈，其中多个线圈插入金属管的内部，并且交流 施加到线圈以测量由于金属管中产生的涡流的变化而导致的线圈阻抗的变化，从而检测金属管的表面缺陷。