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    • 4. 发明公开
    • 내수소유기균열성과 내황화물응력균열성이 우수한 후물 열연강판 및 그 제조방법
    • 具有良好氢诱导的抗裂纹和硫化物应力裂纹的厚的热轧钢板及其制造方法
    • KR1020160077392A
    • 2016-07-04
    • KR1020140186568
    • 2014-12-22
    • 주식회사 포스코
    • 김완근김덕규
    • C22C38/22C22C38/26C21D8/02
    • C22C38/22C21D8/02C22C38/26Y10S148/906
    • 본발명은, 중량%로, C: 0.02~0.05%, Si: 0.05~0.5%, Mn: 0.5~1.4%, P: 0.01%이하(0% 제외), S: 0.001%이하(0% 제외), Al: 0.02~0.05%, Nb: 0.01~0.07%, Ti: 0.005~0.02%, N: 0.002~0.008, Cr: 0.01~0.5%, Mo: 0.01~0.5%, Ca: 0.0015~0.003%, 잔부 Fe 및기타불가피한불순물을포함하고, 1 ≤ Cr/Mo ≤ 5의조건을만족하며, 미세조직은펄라이트를 2면적%이하, 그리고 MA를 0.5면적% 이하로포함하고, 평균크기가 20㎛이상인비금속개재물이 100×50㎟당 50개이하인내수소유기균열성및 내황화물응력균열성이우수한후물열연강판을제공한다.
    • 本发明提供一种具有优异的耐氢诱导裂纹和硫化物复合应力裂纹的耐热轧钢板,其特征在于,包括:0.02-0.05重量%的C,0.05-0.5重量%的Si,0.5-1.4重量%的Mn,0.01 的P(不包括0重量%),0.001重量%以下的S(不包括0重量%),0.02〜0.05重量%的Al,0.01-0.07重量%的Nb,0.005〜0.02重量%的Ti ,0.002-0.008重量%的N,0.01-0.5重量%的Cr,0.01-0.5重量%的Mo,0.0015-0.003重量%的Ca,剩余的由Fe和不可避免的杂质组成; 满足1 <= Cr / Mo <= 5的条件。其微细结构包括2%以下的珠光体,和0.5面积%以下的MA。 此外,厚的热轧钢的平均尺寸等于或大于20μm,每100×50mm ^ 2的非金属夹杂物为50以下。
    • 5. 发明公开
    • 시험편 가공 장치
    • 用于设置测试装置的装置和用于工作测试的装置
    • KR1020160068528A
    • 2016-06-15
    • KR1020140174380
    • 2014-12-05
    • 주식회사 포스코
    • 김덕규한상빈
    • G01N1/28G01N1/36G01N1/32G01N3/30
    • G01N1/28G01N1/32G01N1/36G01N3/30
    • 본발명중 시험편거치장치는시험편의적어도일 부분을홀딩하여거치하는홀딩부; 홀딩부에거치된시험편을고정시키는고정부; 및홀딩부가개폐되는경로를안내하는가이딩부를포함하고, 시험편가공장치는시험편거치장치; 시험편거치장치에거치된시험편의용접부위를부식시키는커로전유닛; 및커로전유닛에의해부식된용접부위를연마하는그라인딩유닛을포함하는것을특징으로하여, 시험편거치장치에거치된시험편은견고하고정확한위치에안착된상태로, 부식및 연마되어, 정확한연삭및 노치가공이가능하도록하는효과를제공한다.
    • 根据本发明的实施例,安装测试件的装置包括:保持单元,用于保持和安装测试件的至少一部分; 固定单元,固定安装在保持单元上的测试件; 以及引导单元,用于引导保持单元打开和关闭的路径。 试件制造装置包括:安装试件的装置; 腐蚀单元腐蚀安装在设备上的测试件的焊接单元以安装测试件; 以及研磨单元,用于研磨由于腐蚀单元而腐蚀的焊接部件。 安装在装置中以安装测试件的测试件被牢固地安装在精确位置处被腐蚀和磨碎; 从而使得可以进行精确的磨削和凹口制造。
    • 10. 发明公开
    • 내수소유기균열성 및 항복비가 우수한 박물 열연강판 및 그 제조방법
    • 具有优异氢诱导抗裂纹和屈服比的热轧钢板及其制造方法
    • KR1020140081079A
    • 2014-07-01
    • KR1020120150410
    • 2012-12-21
    • 주식회사 포스코
    • 김완근심재숙박용근김덕규
    • C22C38/00C21D8/02C21D9/46C22C38/38
    • C22C38/28C21D8/0226C21D8/0263C21D2211/005C22C38/001C22C38/02C22C38/04C22C38/06C22C38/26
    • The present invention relates to a thin object hot rolled steel sheet having excellent inner hydrogen organic cracking properties and a yield ratio and a method for manufacturing the thin object hot rolled steel sheet. The present invention provides a thin object hot rolled steel sheet having excellent cracking resistance when external stress is applied in the environment in which the corrosion is easily generated and having excellent corrosion resistance for hydrogen organic cracking. The thin object hot rolled steel sheet according to an embodiment of the present invention contains 0.02-0.05 wt% of C, 0.05-0.5 wt% of Si, 0.5-1.5 wt% of Mn, 0.02-0.05 wt% of Al, 0.01-0.03 wt% of Nb, 0.005-0.02 wt% of Ti, 0.01-0.3 wt% of Cr, 0.0015-0.003 wt% of Ca, 0.003-0.007 wt% of N, 0.01 wt% or less of P (excluding 0%), 0.001 wt% or less of S (excluding 0%), and the remainder consisting of Fe and inevitable impurities.
    • 本发明涉及具有优异的内氢有机开裂性能和屈服比的薄型热轧钢板以及薄型热轧钢板的制造方法。 本发明提供一种在易于产生腐蚀的环境中并且对氢有机开裂具有优异的耐腐蚀性的外部应力时具有优异的耐龟裂性的薄型热轧钢板。 根据本发明的一个实施方案的薄型热轧钢板包含C:0.02-0.05重量%,Si:0.05-0.5重量%,Mn:0.5-1.5重量%,Al:0.02-0.05重量%,Al: 0.03重量%的Nb,0.005-0.02重量%的Ti,0.01-0.3重量%的Cr,0.0015-0.003重量%的Ca,0.003-0.007重量%的N,0.01重量%以下的P(不包括0%) ,0.001重量%以下的S(不包括0%),余量由Fe和不可避免的杂质构成。