会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明公开
    • 용접부의 강도 및 인성이 우수한 확관 파이프용 오스테나이트계 강재 및 그 제조방법
    • 用于在焊接区域中具有优异的强度和韧性的可膨胀管的奥氏体钢及其制造方法
    • KR1020150075326A
    • 2015-07-03
    • KR1020130163381
    • 2013-12-25
    • 주식회사 포스코
    • 이학철서인식김용진이홍주
    • C22C38/04C21D8/10C22C38/14
    • C22C38/04C21D8/10C22C38/001C22C38/14
    • 본발명은용접부의강도및 인성이우수한확관파이프용오스테나이트계강재및 그제조방법에관한것이다. 본발명의일 실시형태는중량%, Mn: 16~24%, C: 0.3~1.0%, Ti: 0.01~0.2%, N: 0.003~0.1%, 잔부 Fe 및기타불가피한불순물을포함하며, Mo: 0.5%이하및 B: 0.005%이하중 1종이상을추가로포함하고, 용접에의해얻어지는용접이음부가 200㎛이하의결정립크기를갖는 CGHAZ(Coarse Grain HAZ)와 3면적%이하의카바이드를포함하는 SCHAZ(Sub Critical HAZ)로이루어지는, 용접부의강도및 인성이우수한확관파이프용오스테나이트계강재및 그제조방법을제공한다. 본발명에따르면, CGHAZ부의결정립크기를감소시키고, 동시에 SCHAZ부의결정립내에카바이드석출물이형성되는것을방지함으로써용접부의우수한강도및 인성을확보할수 있는확관파이프용오스테나이트계강재를제공할수 있다.
    • 本发明涉及具有优异的强度和韧性的焊接部分的可膨胀管的奥氏体钢材及其制造方法。 本发明的一个实施方案提供了一种用于可膨胀管的奥氏体钢材料,其具有优异的强度和韧性的焊接部分,其包含16-24重量%的Mn,0.3-1.0重量%的C,0.01-0.2重量%的Ti,0.003 -0.1重量%的N,剩余部分由Fe和不可避免的杂质组成,另外还含有0.5重量%以下的Mo和0.005重量%以下的B中的至少1种,焊接部由粗粒HAZ (CGHAZ)单元,其粒径为200μm以下,3面积%以下的碳化物,并且提供了用于可膨胀管的奥氏体钢材料的制造方法。 根据本发明,通过降低CGHAZ单元的晶粒尺寸并且同时防止CGHAZ单元的晶粒中的碳化物析出,可以获得焊接部分的优异的强度和韧性的可膨胀管的奥氏体钢材料 被提供。
    • 6. 发明公开
    • 용접열영향부 인성이 우수한 고강도 오스테나이트계 강재 및 그 제조방법
    • 高强度奥氏体钢,具有良好的热影响区域及其制造方法
    • KR1020140083795A
    • 2014-07-04
    • KR1020120153920
    • 2012-12-26
    • 주식회사 포스코
    • 이학철서인식김용진이홍주
    • C22C38/04C21D8/02C21D9/46C22C38/38
    • C22C38/38C21D8/0205C21D8/0221C21D8/0247C21D9/46C21D2211/001C22C38/20C22C38/22C22C38/32C22C2202/00
    • The present invention relates to high strength austenite-based steel with remarkable toughness of a welding heat-affected zone and a method of manufacturing the same. An embodiment of the present invention provides a high strength austenite-based steel with remarkable toughness of a welding heat-affected zone, comprising 1.0 to 1.5 wt% of C, 15 to 22 wt% of Mn, 5 wt% or less of Cr (except 0), 0.1 to 1 wt% of Mo, and 0.001 to 0.02 wt% of B, and the remainder consisting of Fe and inevitable impurities, wherein the microstructure of a welding heat-affected zone comprises 90% or more of austenite by volume fractions, and a method of manufacturing the same. Therefore, since the alloy components and composition range are effectively controlled, the stability of austenite grain is improved to control the precipitation of carbon nitrides, thereby suppressing the formation of the carbon nitrides of a network shape. Also, the austenite-based steel can be used for a long time under corrosive environments by improving adding Cr to improve the corrosion resistance.
    • 本发明涉及焊接热影响区具有显着韧性的高强度奥氏体系钢及其制造方法。 本发明的一个实施方案提供一种焊接热影响区具有显着韧性的高强度奥氏体系钢,其包含C:1.0〜1.5重量%,Mn:15〜22重量%,Cr:5重量%以下 除了0),0.1〜1重量%的Mo和0.001〜0.02重量%的B,其余由Fe和不可避免的杂质组成,其中焊接热影响区的微结构包含90体积%以上的奥氏体 馏分及其制造方法。 因此,由于有效地控制合金成分和组成范围,所以提高了奥氏体晶粒的稳定性,以控制碳氮化物的析出,从而抑制网状碳氮化物的形成。 此外,通过改善添加Cr以提高耐腐蚀性,可以在腐蚀性环境下长时间使用奥氏体钢。