公开(公告)号：US06946038B2

公开(公告)日：2005-09-20

申请号：US10182365

申请日：2001-11-20

申请人： Hong-Chul Jeong ,  Hae-Chang Choi ,  Wung-Yong Choo

发明人： Hong-Chul Jeong ,  Hae-Chang Choi ,  Wung-Yong Choo

IPC分类号： B22D11/00 ,  B22D11/124 ,  B22D11/20 ,  B22D11/22 ,  C21D8/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/60 ,  C21D8/00 ,  C23C8/26

CPC分类号： C22C38/06 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0257 ,  C21D8/0263 ,  C22C38/001 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14

摘要： A weldable structural steel product having fine complex precipitates of TiN and MnS is provided which contains, in terms of percent by weight, 0.03 to 0.17% C, 0.01 to 0.05% Si, 1.0 to 2.5% Mn, 0.05 to 0.2% Ti, 0.0005 to 0.1% Al, 0.008 to 0.030% N, 0.0003 to 0.01% B, 0.001 to 0.2% W, at most 0.03% P, 0.003 to 0.05% S, at most 0.005% O, and balance Fe and incidental impurities while satisfying conditions of 1.2≦Ti/N≦2.5, 10≦N/B≦40, 2.5≦Al/N≦7, 6.5≦(Ti+2Al+4B)/N≦14, and 220≦Mn/S≦400. The steel has a microstructure consisting essentially of a complex structure of ferrite and pearlite having a grain size of 20 μm or less.

摘要翻译： 提供了具有TiN和MnS的复合析出物的可焊接结构钢产品，以重量％计含有0.03-0.17％的C，0.01至0.05％的Si，1.0至2.5％的Mn，0.05至0.2％的Ti，0.0005 至0.1％的Al，0.008〜0.030％的N，0.0003〜0.01％的B，0.001〜0.2％的W，0.03％以下的P，0.003〜0.05％的S，0.005％以下的O，余量为Fe， 为1.2 <= Ti / N <= 2.5,10×= N / B <=40,2.5≤Al/N≤7,6.5<=（Ti + 2Al + 4B）/N≤14， = Mn / S <= 400。 该钢具有主要由粒径为20μm以下的铁素体和珠光体的复合结构组成的微结构。

公开(公告)号：US07105066B2

公开(公告)日：2006-09-12

申请号：US10476442

申请日：2001-11-16

申请人： Hong-Chul Jeong ,  Hae-Chang Choi

发明人： Hong-Chul Jeong ,  Hae-Chang Choi

IPC分类号： C22C38/14 ,  C22C38/02 ,  C22C38/06

CPC分类号： C22C38/002 ,  C21D8/021 ,  C21D8/0226 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/60

摘要： A welding structural steel product exhibiting a superior heat affected zone toughness, comprising, in terms of percent by weight, 0.03 to 0.17% C, 0.01 to 0.5% Si, 0.4 to 2.0% Mn, 0.005 to 0.2% Ti, 0.0005 to 0.1% Al, 0.008 to 0.030% N, 0.0003 to 0.01% 0.00 1 to 0.2% W, at most 0.03% P, at most 0.03% S, at most 0.005% 0, and balance Fe and incidental impurities while satisfying conditions of 1.2≦Ti/N≦2.5, 10≦N/B≦40, 2.5≦Al/N≦7, and 6.5≦(Ti+2Al+4B)/N≦14, and having a microstructure essentially consisting of a complex structure of ferrite and pearlite having a grain size of 20 μm or less. The method includes the steps of preparing a slab of the above-described composition, heating the slab to 1,100° C. to 1,250° C. for 60-180 minutes, hot rolling the heated slab in an austenite recrystallization range at a 40% or more rolling reduction followed by controlled cooling.

摘要翻译： 表现出优异的热影响区韧性的焊接结构钢产品，以重量％计含有0.03〜0.17％的C，0.01〜0.5％的Si，0.4〜2.0％的Mn，0.005〜0.2％的Ti，0.0005〜0.1％ Al，0.008〜0.030％N，0.0003〜0.01％0.001-0.2％W，0.03％以下P，0.03％S以下0.005％以下0以下，余量为Fe及杂质，同时满足条件1.2 < Ti / N <=2.5,10≤N/B≤40,2.5≤Al/N≤7和6.5 <=（Ti + 2Al + 4B）/N≤14，并且具有基本上由 的铁素体和珠光体的复合结构，其粒径为20μm以下。 该方法包括以下步骤：制备上述组合物的板坯，将板坯加热至1100℃至1250℃，持续60-180分钟，在奥氏体重结晶范围内以40％的速度热轧加热的板坯，或 更多的轧制减少，然后控制冷却。

公开(公告)号：US07396423B2

公开(公告)日：2008-07-08

申请号：US11105795

申请日：2005-04-14

申请人： Hong-Chul Jeong ,  Hae-Chang Choi

发明人： Hong-Chul Jeong ,  Hae-Chang Choi

IPC分类号： C21D8/02

CPC分类号： C22C38/002 ,  C21D8/021 ,  C21D8/0226 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/60

摘要： A welding structural steel product exhibiting a superior heat affected zone toughness, comprising, in terms of percent by weight, 0.03 to 0.17% C, 0.01 to 0.5% Si, 0.4 to 2.0% Mn, 0.005 to 0.2% Ti, 0.0005 to 0.1% Al, 0.008 to 0.030% N, 0.0003 to 0.01% B, 0.001 to 0.2% W, at most 0.03% P, at most 0.03% S, at most 0.005% O, and balance Fe and incidental impurities while satisfying conditions of 1.2≦Ti/N≦2.5, 10≦N/B≦40, 2.5≦Al/N≦7, and 6.5≦(Ti+2Al+4B)/N≦14, and having a microstructure essentially consisting of a complex structure of ferrite and pearlite having a grain size of 20 μm or less. The method includes the steps of preparing a slab of the above-described composition, heating the slab to 1,100° C. to 1,250° C. for 60-180 minutes, hot rolling the heated slab in an austenite recrystallization range at a 40% or more rolling reduction followed by controlled cooling.

摘要翻译： 表现出优异的热影响区韧性的焊接结构钢产品，以重量％计含有0.03〜0.17％的C，0.01〜0.5％的Si，0.4〜2.0％的Mn，0.005〜0.2％的Ti，0.0005〜0.1％ Al，0.008〜0.030％N，0.0003〜0.01％B，0.001〜0.2％W，0.03％以下P，0.03％以下S，0.005％以下O，余量Fe及附带杂质， = Ti / N <=2.5,10≤N/B≤40,2.5≤Al/N≤7和6.5 <=（Ti + 2Al + 4B）/N≤14，并且具有微观结构 由粒径为20μm以下的铁素体和珠光体的复合结构构成。 该方法包括以下步骤：制备上述组合物的板坯，将板坯加热至1100℃至1250℃，持续60-180分钟，在奥氏体重结晶范围内以40％的速度热轧加热的板坯，或 更多的轧制减少，然后控制冷却。

公开(公告)号：US20050173030A1

公开(公告)日：2005-08-11

申请号：US11105795

申请日：2005-04-14

申请人： Hong-Chul Jeong ,  Hae-Chang Choi

发明人： Hong-Chul Jeong ,  Hae-Chang Choi

IPC分类号： B22D11/00 ,  B22D11/124 ,  B22D11/20 ,  B22D11/22 ,  C21C7/04 ,  C21C7/06 ,  C21D8/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/58 ,  C22C38/60

CPC分类号： C22C38/002 ,  C21D8/021 ,  C21D8/0226 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/60

摘要： A welding structural steel product exhibiting a superior heat affected zone toughness, comprising, in terms of percent by weight, 0.03 to 0.17% C, 0.01 to 0.5% Si, 0.4 to 2.0% Mn, 0.005 to 0.2% Ti, 0.0005 to 0.1% Al, 0.008 to 0.030% N, 0.0003 to 0.01% B, 0.001 to 0.2% W, at most 0.03% P, at most 0.03% S, at most 0.005% O, and balance Fe and incidental impurities while satisfying conditions of 1.2≦Ti/N≦2.5, 10≦N/B≦40, 2.5≦Al/N≦7, and 6.5≦(Ti+2Al+4B)/N≦14, and having a microstructure essentially consisting of a complex structure of ferrite and pearlite having a grain size of 20 μm or less. The method includes the steps of preparing a slab of the above-described composition, heating the slab to 1,100° C. to 1,250° C. for 60-180 minutes, hot rolling the heated slab in an austenite recrystallization range at a 40% or more rolling reduction followed by controlled cooling.

摘要翻译： 表现出优异的热影响区韧性的焊接结构钢产品，以重量％计含有0.03〜0.17％的C，0.01〜0.5％的Si，0.4〜2.0％的Mn，0.005〜0.2％的Ti，0.0005〜0.1％ Al，0.008〜0.030％N，0.0003〜0.01％B，0.001〜0.2％W，0.03％以下P，0.03％以下S，0.005％以下O，余量Fe及杂质， = Ti / N <=2.5,10≤N/B≤40,2.5≤Al/N≤7和6.5 <=（Ti + 2Al + 4B）/N≤14，并且具有微观结构 由粒径为20μm以下的铁素体和珠光体的复合结构构成。 该方法包括以下步骤：制备上述组合物的板坯，将板坯加热至1100℃至1250℃，持续60-180分钟，在奥氏体重结晶范围内以40％的速度热轧加热的板坯，或 更多的轧制减少，然后控制冷却。

公开(公告)号：US06966955B2

公开(公告)日：2005-11-22

申请号：US10203740

申请日：2001-11-21

申请人： Hae-Chang Choi ,  Hong-Chul Jeong

发明人： Hae-Chang Choi ,  Hong-Chul Jeong

IPC分类号： B21B1/26 ,  B21B3/00 ,  B22D11/00 ,  B22D11/20 ,  B22D11/22 ,  C21C7/06 ,  C21D8/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/58 ,  C21D8/00 ,  C22C38/28

CPC分类号： C22C38/04 ,  C21D8/0226 ,  C21D8/0257 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/12 ,  C22C38/14 ,  Y10T428/12958 ,  Y10T428/12965

摘要： A weldable structural steel product having TiN and ZrN precipitates, which contains, in terms of percent by weight, 0.03 to 0.17% C, 0.01 to 0.5% Si, 0.4 to 2.0% Mn, 0.005 to 0.2% Ti, 0.0005 to 0.1% Al, 0.001 to 0.03% Zr, 0.008 to 0.030% N, 0.0003 to 0.01% B, 0.001 to 0.2% W, at most 0.03% P, at most 0.03% S, at most 0.01% O, and balance Fe and incidental impurities while satisfying conditions of 1.2≦Ti/N≦2.5, 0.3≦Zr/N≦2.0, 10≦N/B≦40, 2.5≦Al/N≦7, and 6.8≦(Ti+Zr+2Al+4B)/N≦17, and having a microstructure essentially consisting of a complex structure of ferrite and pearlite having a grain size of 20 μm or less.

摘要翻译： 一种具有TiN和ZrN析出物的可焊接结构钢产品，其以重量％计含有0.03至0.17％的C，0.01至0.5％的Si，0.4至2.0％的Mn，0.005至0.2％的Ti，0.0005至0.1％的Al ，0.001〜0.03％的Zr，0.008〜0.030％的N，0.0003〜0.01％的B，0.001〜0.2％的W，0.03％以下的P，0.03％以下的S，0.01％以下的O，余量为Fe和杂质， 满足条件1.2 <= Ti / N <=2.5,0.3≤Zr/N≤2.0,10≤N/B≤40,2.5≤Al/N≤7和6.8 <=（Ti + Zr + 2Al + 4B）/ N <17，并且具有基本上由具有20μm或更小的晶粒尺寸的铁素体和珠光体的复合结构组成的微结构。

公开(公告)号：US06686061B2

公开(公告)日：2004-02-03

申请号：US10181328

申请日：2002-07-16

申请人： Hong-Chul Jeong ,  Hae-Chang Choi

发明人： Hong-Chul Jeong ,  Hae-Chang Choi

IPC分类号： B32B1504

CPC分类号： C21D1/26 ,  C21C7/06 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/002 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  Y10T29/301 ,  Y10T428/12576 ,  Y10T428/12653 ,  Y10T428/12965 ,  Y10T428/12972

摘要： A weldable structural steel product having fine complex precipitates of TiN and CuS is provided which contains, in terms of percent by weight, 0.03 to 0.17%C, 0.01 to 0.05% Si, 0.4 to 2.0% Mn, 0.005 to 0.2% Ti, 0.0005 to 0.1% Al, 0.008 to 0.030% N, 0.0003 to 0.01% B, 0.001 to 0.2% W, 0.1 to 1.5% Cu, at most 0.03% P, 0.003 to 0.05% S, at most 0.005% O, and balance Fe and incidental impurities while satisfying conditions of 1.2≦Ti/N≦2.5, 10≦N/B≦40, 2.5≦Al/N≦7, 6.5≦(Ti+2Al+4B)/N≦14, and 10≦Cu/S≦90, and having a microstructure essentially consisting of a complex structure of ferrite and pearlite having a grain size of 20 &mgr;m or less.

摘要翻译： 提供了具有TiN和CuS的复合析出物的可焊接结构钢产品，以重量％计含有0.03-0.17％的C，0.01到0.05％的Si，0.4到2.0％的Mn，0.005到0.2％的Ti，0.0005 至0.1％的Al，0.008至0.030％的N，0.0003至0.01％的B，0.001至0.2％的W，0.1至1.5％的Cu，至多0.03％的P，0.003至0.05％的S，至多0.005％的O，余量的Fe 满足条件为1.2 <= Ti / N <= 2.5,10×= N /B≤40,2.5≤Al/N≤7,6.5<=（Ti + 2Al + 4B）/ N < = 14和10 <= Cu / S <= 90，并且具有基本上由具有20μm或更小的粒度的铁素体和珠光体的复合结构组成的微结构。