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1. 发明授权

KR101504418B1 파단방지를 위한 스테인리스 강판의 딥드로잉 성형방법 有权
标题翻译：不锈钢深冲法防止断裂
公开(公告)号：KR101504418B1
公开(公告)日：2015-03-19
申请号：KR1020130056715
申请日：2013-05-20
申请人： 주식회사 포스코
发明人： 김광육 , 안덕찬 , 박지언
IPC分类号： B21D22/20 , B21D37/16
摘要： 본 발명에 의한 스테인리스 강판의 딥드로잉 성형방법은 코너부에 넥킹이 발생하는 것을 방지할 수 있도록 스테인리스 강판의 플랜지부를 온도구배가 형성되도록 저온영역 및 고온영역으로 구분하여 가열하되, 상기 저온영역을 코너부로 가공하는 것을 특징으로 한다.

2. 发明授权

KR101463313B1 내마모특성이 우수한 스테인리스 강관 및 그 제조방법 有权
标题翻译：具有优异耐磨性的不锈钢管及其制造方法
公开(公告)号：KR101463313B1
公开(公告)日：2014-11-18
申请号：KR1020120151260
申请日：2012-12-21
申请人： 주식회사 포스코
发明人： 김광육 , 안덕찬 , 채동철
IPC分类号： C22C38/00 , C21D6/00 , C22C38/58
CPC分类号： C22C38/58 , C21D1/42 , C21D6/004 , C21D8/10 , C21D9/085 , C21D9/14 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/44 , C22C38/48 , C22C38/50 , Y02P10/253
摘要： 본 발명은 저온인성을 유지하면서 파이프 내측영역의 내마모성을 향상시키는 내마모특성이 우수한 스테인리스 강관 및 그 제조방법에 관한 것으로서, 본 발명의 일 실시형태에 따른 내마모특성이 우수한 스테인리스 강관은 Cr: 11.0 ~ 14.0wt%를 함유하고, 하기 [식 1]로 표현되는 페라이트 인자(FF: Ferrite Factor)가 6 ~ 9 범위인 강관이고, 강관의 두께를 기준으로 내측영역은 마르텐사이트와 페라이트의 혼상 조직을 갖고, 외측영역은 페라이트 단상 조직 또는 페라이트와 마르텐사이트의 혼상 조직을 갖되, 내측영역의 마르텐사이트 분율이 외측영역의 마르텐사이트 분율보다 크게 형성된 것을 특징으로 한다.
[식 1]
FF = [Cr + 6Si +8Ti + 4Mo + 2Al +4Nb] - [2Mn + 4Ni + 40(C+N)]
[식 1]에서 Cr, Si, Ti, Mo, Al, Nb, Mn, Ni, C 및 N는 각 성분의 함량(wt%)을 의미함.

3. 发明公开

KR1020090062103A 고크롬 페라이트계 스테인리스강의 성형한계도 예측 방법 失效
标题翻译：形成高铬铁素体不锈钢限制图的预测方法
公开(公告)号：KR1020090062103A
公开(公告)日：2009-06-17
申请号：KR1020070129206
申请日：2007-12-12
申请人： 주식회사 포스코
发明人： 김광육 , 박미남 , 정양진
IPC分类号： C22C38/40 , C22C38/00
CPC分类号： C22C38/44 , C22C38/02 , C22C38/04 , C22C38/42
摘要： A method for estimating the forming limit diagram of high chrome ferritic stainless steel is provided to predict the actual yield in press-forming various materials and to reduce the failure rate. A method for estimating the forming limit diagram of high chrome ferritic stainless steel comprises a step of measuring nickel(Ni) equivalent of alloy component, a step of saving plane transformation region(FLD0) of forming limit diagram by substituting the thickness of material and the measured nickel equivalent for the equation, FLD0 = 21.5 + (2.57* thickness) - (0.98* nickel equivalent), and a step of predicting forming limit diagram by using the FLD0 and one or more forming limit diagram values measured while varying the nickel equivalent and the thickness.
摘要翻译：提供了一种用于估计高铬铁素体不锈钢成形极限图的方法，以预测压制成型各种材料的实际产量并降低故障率。一种用于估计高铬铁素体不锈钢的成形极限图的方法包括测量合金成分的镍（Ni）当量的步骤，通过代替材料的厚度来形成极限图的平面转变区域（FLD0）的步骤，以及测量的镍当量，FLD0 = 21.5 +（2.57 *厚度） - （0.98 *镍当量），以及通过使用FLD0预测成形极限图的步骤和在改变镍当量时测量的一个或多个成形极限图值和厚度。

4. 发明授权

KR100518754B1 오스테나이트계 스테인레스강판의 연속온간압연 방법 有权
标题翻译：使用奥氏体不锈钢的轧机轧机进行蜗杆轧制的方法
公开(公告)号：KR100518754B1
公开(公告)日：2005-10-06
申请号：KR1020010043795
申请日：2001-07-20
申请人： 주식회사 포스코
发明人： 유도열 , 김봉운 , 김광육
IPC分类号： B21B1/22
摘要： 본 발명은 텐덤냉간압연기를 이용하여 스테인레스강판을 온간압연하는 방법에 관한 것으로, 오스테나이트계 스테인레스강판 (10)을 일반강의 냉연설비인 다수개의 텐덤냉간압연기(20)를 이용하여 압연하는 과정에서 스테인레스강판의 냉간압하율을 증대시키기 위한 온간압연방법을 제공함에 있어서, 스테인레스강판(10)의 가공라인에 구비되어진 연속소둔로(30)로부터 공급되는 배가스를 분배배관(40)을 통해 텐덤냉간압연기(20)의 각 패스를 통과하는 스테인레스강판(10)으로 분사하여, 스테인레스강판(10)의 표면온도가 200∼300℃의 온도범위로 유지되는 과정에서 온간압연하므로써, 히팅장치의 설치에 따른 부대비용이 절감될 뿐만 아니라 뿐만 아니라, 스테인레스강판의 생산성이 증대됨은 물론 제조원가가 절감되게 한 것이다.

5. 发明授权

KR100415666B1 성형성 및 리찡 저항성이 우수한 페라이트계 스테인레스강 및 그 제조방법 有权
标题翻译：性别男性性别女性生活方式性别男性生活方式婚姻状况
公开(公告)号：KR100415666B1
公开(公告)日：2004-01-31
申请号：KR1019990059217
申请日：1999-12-20
申请人： 주식회사 포스코
发明人： 유도열 , 김광육 , 손원근
IPC分类号： C22C38/18 , C22C38/40 , C21D8/02
摘要： PURPOSE: A method for manufacturing ferritic stainless steel is provided to improve formability and ridging resistance thereof by lowering theoretical yield strength, raising maximum gamma phase percentage, and controlling slab casting temperature optimal. CONSTITUTION: The ferritic stainless steel is manufactured by casting a steel comprising C 0.07wt.% or less, Si 0.4wt.% or less, Mn 1.0wt.% or less, P 0.035wt.% or less, S 0.002wt.% or less, Cr 15-20wt.%, Mo 0.5wt.% or less, N 0.05wt.% or less, Cu 0.6wt.% or less, Ni 0.4wt.% or less, Al 0.01wt.% or less, Ti 0.15wt.% or less, a balance of Fe, and other inevitable impurities at a casting temperature of 1536deg.C or lower; reheating the obtained steel slab in the temperature range of 1170 to 1250deg.C; finish hot rolling it in the temperature range of 750 to 900deg.C; annealing the hot rolled steel sheet in the temperature range of 860 to 900deg.C for 3-10 min; furnace cooling and pickling; cold rolling; annealing the cold rolled steel sheet in the temperature range of 860 to 900deg.C for 3-5 min; and then air cooling. The obtained ferritic stainless steel has a theoretical yield strength of 33.20 kg/mm2 or less and the theoretical yield strength is calculated by the follow equation: theoretical yield strength (kg/mm2) = 4.857+9.43Si+11.12Mn+81.73P+0.967Cr+6.99£Ti|+ 3.58Al+95.82£C+N|wherein in the case of Ti/(C+N) 10,£Ti|is equal to Ti-10(C+N) and£C+N|is zero. Also, the ferritic stainless steel has a maximum gamma phase of 45% or higher and the maximum gamma phase is calculated by the follow equation: maximum gamma phase (%)=420(C%)+470(N%)+9(Cu%)+10(Mn%)+23(Ni%)-11.5(Cr%)-11.5(Si%)-12(Mo%)-49(Ti% )-52(Al%)+180.
摘要翻译：目的：提供一种制造铁素体不锈钢的方法，通过降低理论屈服强度，提高最大γ相百分比和最佳控制板坯铸造温度来改善其成形性和抗皱性。构成：铁素体系不锈钢是通过将含有C：0.07重量％以下，Si：0.4重量％以下，Mn：1.0重量％以下，P：0.035重量％以下，S：0.002重量％或更少，Cr 15-20重量％，Mo 0.5重量％或更少，N 0.05重量％或更少，Cu 0.6重量％或更少，Ni 0.4重量％或更少，Al 0.01重量％或更少， Ti：0.15重量％以下，其余为Fe及其他不可避免的杂质，铸造温度为1536℃以下; 在1170〜1250℃的温度范围内对所得钢坯进行再加热; 在750〜900℃的温度范围内完成热轧。在860-900℃的温度范围内退火热轧钢板3-10分钟; 炉冷和酸洗; 冷轧; 在860-900℃的温度范围内退火冷轧钢板3-5分钟; 然后空气冷却。得到的铁素体系不锈钢的理论屈服强度为33.20kg / mm2以下，理论屈服强度按下式计算：理论屈服强度（kg / mm2）= 4.857 + 9.43Si + 11.12Mn + 81.73P + 0.967 Cr + 6.99英镑; Ti | + 3.58Al + 95.82英寸; C + N |其中在Ti /（C + N） 10，则| Ti |为0且| C + N |等于（C + N）-Ti / 10，然而在Ti /（C + N）> 10的情况下，| Ti |等于 Ti-10（C + N）和C + N |为零。此外，铁素体系不锈钢的γ相最大值为45％以上，最大γ相由最大γ相（％）= 420（C％）+ 470（N％）+9（Cu ％）+10（Mn％）+ 23（Ni％） - 11.5（Cr％） - 11.5（Si％） - 12（Mo％） - 49（Ti％）-52（Al％）+ 180。

6. 发明授权

KR100376529B1 오스테나이트계 스테인레스 강판의 시효균열 판별방법 有权
标题翻译： 오스테나이트계스테인레스강판의시효균열판별방
公开(公告)号：KR100376529B1
公开(公告)日：2003-06-18
申请号：KR1019980039207
申请日：1998-09-22
申请人： 주식회사 포스코
发明人： 김광육 , 박미남
IPC分类号： G01N33/20
摘要： PURPOSE: A method for determining an ageing crack of an austenite stainless steel is provided to determine an ageing crack of an austenite stainless steel by analyzing composition of a stainless steel. CONSTITUTION: A method for determining an ageing crack of an austenite stainless steel comprises the steps of: analyzing components of an arbitrary austenite-based stainless steel; calculating a nickel equivalent from the analyzed components; obtaining a limit drawing ratio according to an ageing crack of the steel through a multiple drawing; obtaining a correlation between the nickel equivalent and the limit drawing ratio; obtaining a nickel equivalent through the composition of a particular austenite-based stainless steel and determining the ageing crack by comparing the obtained nickel equivalent with the limit drawing ratio.
摘要翻译：目的：通过分析不锈钢的组成来确定奥氏体不锈钢的时效裂纹的方法，以确定奥氏体不锈钢的时效裂纹。构成：确定奥氏体不锈钢时效裂纹的方法包括以下步骤：分析任意奥氏体基不锈钢的成分; 从分析的组分计算镍当量; 通过多次拉拔根据钢材的时效裂纹获得极限拉深比; 获得镍当量和极限拉深比之间的相关性; 通过特定奥氏体系不锈钢的组成获得镍当量，并通过比较获得的镍当量和极限拉伸比来确定时效裂纹。

7. 发明公开

KR1020020051241A 모델링을 이용한 오스테나이트계 스테인레스강의 심가공방법 无效
标题翻译：使用建模深度绘制奥氏体不锈钢的方法
公开(公告)号：KR1020020051241A
公开(公告)日：2002-06-28
申请号：KR1020000080835
申请日：2000-12-22
申请人： 주식회사 포스코
发明人： 김광육 , 유도열 , 박미남
IPC分类号： B21D28/00
摘要： PURPOSE: A method for deep drawing an austenitic stainless steel material using optimum forming limit deduced through modeling is provided. CONSTITUTION: In a method for deep drawing the material in a certain shape as descending a punch by positioning a material between dies and a blank holder, the method for deep drawing austenitic stainless steel using modeling comprises the steps of obtaining true stress-true strain data by determining density, specific heat, Young modules and poisson's ratio of an austenitic stainless steel material, and tensile testing the material; performing a two dimensional modeling as varying friction coefficient of the material, blank holding force and radius of the dies after element splitting dies, punch, blank, blank holder and material of a deep drawing tester using the obtained data as boundary conditions; estimating a maximum limiting drawing ratio for the material through the modeling; and setting values of friction coefficient of the material, blank holding force and diameter of the dies corresponding to the estimated maximum limiting drawing ratio, and ascending the punch again after descending the punch to the blank as applying blank holding force to the austenitic stainless steel material using the set values.
摘要翻译：目的：提供一种通过建模推导出的使用最佳成形极限拉深奥氏体不锈钢材料的方法。构成：在通过将材料定位在模具和坯料夹持器之间将材料深度拉伸成一定形状的材料的方法中，使用建模的深拉伸奥氏体不锈钢的方法包括以下步骤：获得真实应力 - 真实应变数据通过确定奥氏体不锈钢材料的密度，比热，杨氏模量和泊松比，以及拉伸试验材料; 使用所获得的数据作为边界条件，进行二维建模作为材料的摩擦系数，毛坯夹持力和元件分割模具后的冲模，冲头，坯料，坯料夹持器和材料的模具半径; 通过建模估计材料的最大限制拉伸比; 以及与估计的最大限制拉拔比相对应的材料的摩擦系数，坯料夹持力和模具直径的设定值，并且在将冲头向冲压坯下落到坯料之后再次上升到向奥氏体不锈钢材料施加坯料夹持力使用设定值。

8. 发明公开

KR1020020047578A 바이메탈용 철-니켈 합금의 냉간압연재 제조방법 有权
标题翻译：在双金属中使用的有限元合金的制造方法
公开(公告)号：KR1020020047578A
公开(公告)日：2002-06-22
申请号：KR1020000076067
申请日：2000-12-13
申请人： 주식회사 포스코
发明人： 김광육 , 이수찬
IPC分类号： B21B3/00
摘要： PURPOSE: A Fe-Ni alloy with superior mechanical properties, thermal expansion coefficient, and curve coefficient is provided, which is used in bimetal being joined with stainless steel 304. CONSTITUTION: In a manufacturing method of Fe-Ni alloy for bimetal comprising Ni 30-40%, Mn 0.5% or less, Si 0.4% or less, C 0.01% or less, N 0.01% or less, P 0.01% or less, a balance of Fe and other inevitable impurities, the present invention is characterized in that after cold rolling a hot coil, continuous annealing is carried out at 850°C for 10 to 30 seconds; and then skin pass milling at a reduction ratio of 20 to 30% in finish cold rolling.
摘要翻译：目的：提供具有优异机械性能，热膨胀系数和曲线系数的Fe-Ni合金，用于双金属与不锈钢304接合。结论：在含有Ni 30的双金属Fe-Ni合金的制造方法中 -40％，Mn 0.5％以下，Si 0.4％以下，C：0.01％以下，N：0.01％以下，P：0.01％以下，余量为Fe等不可避免的杂质，其特征在于：在冷轧热线圈之后，在850℃下进行10〜30秒的连续退火; 然后在精冷轧中以20〜30％的压下率进行表面磨削。

9. 发明公开

KR1020010017808A 오스테나이트 스테인레스강의 심가공시 시효균열 예측방법 无效
标题翻译：奥氏体不锈钢深度加工中老化裂纹的预测方法
公开(公告)号：KR1020010017808A
公开(公告)日：2001-03-05
申请号：KR1019990033504
申请日：1999-08-14
申请人： 주식회사 포스코
发明人： 김광육 , 박미남
IPC分类号： G01N33/20
摘要： PURPOSE: An aging crack predicting method is provided to prevent a crack of a material in deep processing of austenite stainless steel and to induce safe material selection by detecting an empirical formula able to accurately predict an aging crack and by presenting a Ni-equivalent ratio safe to an aging crack. CONSTITUTION: An Ni-equation for determining the aging crack sensitivity in austenite stainless steel deep processing satisfies the equation of Nieq=-10741663+0.31(Mn)+22()+14.2()+1.2()+1.2(). According to the presentation of the Ni-equivalent ratio safe for an aging crack, the crack of a material is prevented. Therefore, safe material selection is guided.
摘要翻译：目的：提供一种老化裂纹预测方法，以防止材料在奥氏体不锈钢深加工中的裂纹，并通过检测能够准确预测老化裂纹的经验公式并通过提供Ni当量比安全来诱导安全的材料选择到老化的裂缝。构成：用于确定奥氏体不锈钢深加工中的老化裂纹敏感性的Ni方程满足Nieq = -10741663 + 0.31（Mn）+22（）+ 14.2（）+ 1.2（）+ 1.2（））的等式。根据Ni-当量比对于老化裂纹的安全性的表现，可以防止材料的裂纹。因此，安全的材料选择是指导的。

10. 发明公开

KR1020000040978A 섀도우마스크용 인바합금의 스킨 패스 압하량 예측에 따른 에칭성 판별방법 无效
标题翻译：基于预防隐形皮肤合金的皮肤压力预测的蚀刻性能分类方法
公开(公告)号：KR1020000040978A
公开(公告)日：2000-07-15
申请号：KR1019980056741
申请日：1998-12-21
申请人： 주식회사 포스코
发明人： 김광육 , 이용득 , 박미남
IPC分类号： G01N9/00
摘要： PURPOSE: A distinction method of an etching property is provided which predicts the pressure of a final skin pass to judge the etching properties of unidentified subjects so that it is used to reduce loss in selecting a subject for a shadow mask. CONSTITUTION: A distinction method of an etching property is followed by the steps of: (i) skin pass rolling an optional invar material with changing the pressure; (ii) eliminating about 25% of surface thickness in the skin pass rolling material by etching to polish the thickness by 1/4; (iii) measuring the polished set structure of the invar material to calculate orientation distribution function; (iv) calculating the strength of a distribution function, using a boltzmann function to calculate a regression curve and predicting the skin pass pressure; (v) and judging the etching property of the subject inferred from the strength of the distribution and the skin pass pressure.
摘要翻译：目的：提供一种蚀刻特性的区别方法，其预测最终皮肤通过的压力以判断不确定受试者的蚀刻性质，从而减少用于选择荫罩对象的损失。构成：蚀刻性能的区别方法之后是以下步骤：（i）在改变压力的情况下，对可选择的不锈钢材料进行表皮轧制; （ii）通过蚀刻消除皮肤轧制材料中约25％的表面厚度以将厚度抛光1/4; （iii）测量抛光的不规则材料的组合结构以计算取向分布函数; （iv）使用boltzmann函数计算分布函数的强度来计算回归曲线并预测皮肤通过压力; （v），并根据分布强度和皮肤通过压力来判断被检体的蚀刻性质。

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