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    • 3. 发明授权
    • Fine spheroidized steel sheet with excellent heat treatment characteristic and method for manufacturing the same
    • 具有优异热处理特性的精细球状钢板及其制造方法
    • US08440030B2
    • 2013-05-14
    • US13141739
    • 2009-12-21
    • Chang-Hoon LeeJea-Chun JeonJong-Sub LeeKi-Soo Kim
    • Chang-Hoon LeeJea-Chun JeonJong-Sub LeeKi-Soo Kim
    • C22C38/04C22C38/06C21D8/02
    • C21D1/32C21D8/02C21D8/0205C21D9/46
    • A method for manufacturing a fine spheroidized steel sheet having an excellent heat treatment characteristic, the method including: i) manufacturing a high carbon slab that is formed of 0.3 to 1.0 wt % C, 0.1 to 1.2 wt % Mn, 0 to 0.4 wt % Si, 0.01 to 0.1 wt % Al, 0 to 0.01 wt % S, and balance Fe and an inevitably added impurity as residuals; ii) reheating the slab to a temperature of Ar3 transformation point or more; iii) roughing rolling the slab, and manufacturing a thin plate by performing finish rolling in an austenite region; iv) cooling the thin plate at a cooling speed of 50 to 300° C./sec; v) finishing the cooling of the thin plate at a temperature region of 400 to 650° C. and maintaining the temperature; vi) winding the thin plate at a temperature region of 450 to 700° C.; vii) performing cold rolling at a reduction ratio of 30% or more; and viii) spheroidizing annealing the cold rolled thin plate.
    • 一种制造具有优异的热处理特性的精细球化钢板的方法,该方法包括:i)制造由0.3-1.0wt%C,0.1-1.2wt%Mn,0-0.4wt% Si,0.01〜0.1重量%的Al,0〜0.01重量%的S,余量为Fe和不可避免地添加的杂质作为残留物; ii)将板坯加热至Ar3相变点以上的温度; iii)对板坯进行粗轧,并通过在奥氏体区域进行精轧制造薄板; iv)以50〜300℃/秒的冷却速度冷却薄板; v)在400至650℃的温度范围内完成薄板的冷却并保持温度; vi)将薄板卷绕在450-700℃的温度区域; vii)以30%以上的减速比进行冷轧; 和viii)对冷轧薄板进行球化退火。
    • 4. 发明申请
    • CONE PENETROMETERS FOR MEASURING IMPEDANCE OF GROUND
    • 用于测量地面阻力的锥形蝶阀
    • US20100257920A1
    • 2010-10-14
    • US12564127
    • 2009-09-22
    • Jong-Sub LeeHyung-Koo YoonRae Hyun KimJoon Han Kim
    • Jong-Sub LeeHyung-Koo YoonRae Hyun KimJoon Han Kim
    • G01N3/42
    • E02D1/022
    • Provided are cone penetrometers for measuring the impedance of the ground. In an embodiment, the cone penetrometer comprises an inner electrode, an outer electrode, an insulator layer and a penetrating rod. The inner electrode includes a cone, a first contact portion to which terminal cables of an impedance meter are connected, and a metal rod. The metal rod has a diameter smaller than that of the cone. The metal rod has a front end connected to the bottom of the cone and a rear end connected to the first contact portion. The outer electrode has an inner diameter smaller than the diameter of the cone and is in the form of a hollow tube accommodating the metal rod. The insulator layer is formed between the inner electrode and the outer electrode to prevent short circuits between the two electrodes. The penetrating rod is in the form of a hollow tube accommodating the outer electrode. The use of the cone penetrometers improves the accuracy and reliability of the measured results. Further, the cone penetrometers can be miniaturized while maintaining high stiffness against buckling.
    • 提供用于测量地面阻抗的锥形透度计。 在一个实施例中,锥形穿透计包括内部电极,外部电极,绝缘体层和穿透杆。 内电极包括锥体,连接有阻抗计的端子电缆的第一接触部分和金属棒。 金属棒的直径小于圆锥体的直径。 金属棒具有连接到锥体的底部的前端和连接到第一接触部分的后端。 外部电极的内径小于锥体的直径,并且是形成容纳金属棒的中空管的形式。 在内部电极和外部电极之间形成绝缘体层,以防止两个电极之间的短路。 穿透杆是容纳外部电极的中空管的形式。 锥形穿透仪的使用提高了测量结果的准确性和可靠性。 此外,锥形贯通计可以小型化,同时保持高刚度抵抗弯曲。
    • 9. 发明授权
    • Automatic tensioner for timing chain
    • 自动张紧器用于定时链
    • US07235027B2
    • 2007-06-26
    • US10750672
    • 2003-12-31
    • Jong-Sub Lee
    • Jong-Sub Lee
    • F16H7/08
    • F16H7/08F01L1/024F16H2007/0812
    • The tensioner includes a cylinder inside a large capacity reservoir tank without interference with other components. The tensioner maintains oil inside the cylinder at all times, thereby improving the response of the tensioner when the engine is re-started after a long periods of inactivity. This prevents any fluctuation and wear and tear of a timing chain during engine re-start. Furthermore, the reservoir tank is integrally cast with the cylinder block to reduce manufacturing costs and increasing space-utilization of the engine.
    • 张紧器包括在大容量储罐内的缸体,而不会干扰其他部件。 张紧器始终保持缸内的油,从而在发动机长时间不活动后重新起动时,提高张紧器的响应。 这可以防止发动机重新启动期间正时链条的任何波动和磨损。 此外,储罐与缸体一体地铸造,以降低制造成本并增加发动机的空间利用。