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1. 发明专利

JP2003082444A Soft austenitic stainless steel 有权
标题翻译：软质奥氏体不锈钢
公开(公告)号：JP2003082444A
公开(公告)日：2003-03-19
申请号：JP2001279051
申请日：2001-09-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKANO KOJI , TAKEUCHI KAZUHISA
IPC分类号： C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide soft austenitic stainless steel which has excellent cold workability and an elongated tool life at a low cost.
SOLUTION: The soft austenitic stainless steel having excellent cold workability has a composition containing, by mass, 0.001 to 0.035% C, 0.05 to 1.0% Si, 0.1 to 6.0% Mn, 7.0 to 13.0% Ni, 15.0 to 20.0% Cr, 0.001 to 0.06% N and 0.001 to 0.01% B, and in which the crystal grain size is 3 to 7 by grain size number in JIS G 0551. Alternatively the content of C is controlled to 0.001 to
摘要翻译：要解决的问题：提供以低成本具有优异的冷加工性和延长的工具寿命的软奥氏体不锈钢。解决方案：具有优异的冷加工性的软质奥氏体不锈钢具有以质量计含有0.001至0.035％的C，0.05至1.0％的Si，0.1至6.0％的Mn，7.0至13.0％的Ni，15.0至20.0％的Cr，0.001 至0.06％N和0.001〜0.01％B，在JIS G0551中，晶粒尺寸为3〜7。另外，将C的含量控制在0.001〜0.01％。或者，将O的含量控制在0.005至0.02％，Si至0.05至0.3％，Al至<= 0.008％，或将O的含量控制为<= 0.005％，将Al的含量控制在0.008至0.1％。

2. 发明专利

JP2004323904A Cu-CONTAINING AUSTENITIC STAINLESS STEEL WIRE ROD FOR COLD FORGING HAVING EXCELLENT TOOL LIFE 有权
公开(公告)号：JP2004323904A
公开(公告)日：2004-11-18
申请号：JP2003119277
申请日：2003-04-24
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKANO KOJI , NAKANO TAKESHI , TAKEUCHI KAZUHISA
IPC分类号： C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a Cu-containing austenitic stainless steel wire rod having an excellent tool life on cold forging at a low cost.
SOLUTION: The austenitic stainless steel wire rod has a composition comprising, by mass, 0.1 to 1% Si, 0.5 to 6% Mn, 7 to 16% Ni, 15 to 19% Cr, and 1 to 3.5% Cu, further comprising 0.001 to 0.03% C, 0.001 to 0.03% N, and 0.001 to 0.01% B, and, if required, further comprising 0.1 to 2.5% Mo and 0.005 to 0.025% S, and the balance Fe with inevitable impurities. Its tensile strength in JIS Z 2241 is ≤500N/mm
2 , and the average maximum height Rmax (standard length: 0.8 mm) in the longitudinal direction of the wire rod in JIS B 0601 is 5 to 20 μm.
COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2003013188A Bi FREE-CUTTING STEEL 有权
标题翻译：双自由切割钢
公开(公告)号：JP2003013188A
公开(公告)日：2003-01-15
申请号：JP2001200475
申请日：2001-07-02
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKANO KOJI , NAKAO RYUJI
IPC分类号： C22C38/00 , C22C38/20
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive Bi free-cutting steel superior in harmonization with environment, without including harmful elements such as Pb.
SOLUTION: The Bi free-cutting steel is characterized by including one or more among Cu, Sn, Ag, and Mg in the Bi inclusions in the steel. The above Bi free-cutting steel is also characterized by including, by mass%, 0.01-0.15% Bi, and one or more among 0.3-3.0% Cu, 0.03-0.3% Sn, 0.01-0.2% Ag, and 0.005-0.05% Mg, in the base of a stainless steel containing 11.0-25.0% Cr as an essential element. The above Bi free-cutting stainless steel is further characterized by employing a ferritic stainless steel or a martensitic stainless steel.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供优越的环境协调优良的Bi自由切削钢，不含Pb等有害元素。解决方案：Bi自由切削钢的特征在于在钢中的Bi夹杂物中包括Cu，Sn，Ag和Mg中的一种或多种。上述Bi自由切削钢的特征还在于以质量％计含有0.01-0.15％的Bi，以及0.3-3.0％的Cu，0.03-0.3％的Sn，0.01-0.2％的Ag和0.005-0.05的一种或多种％Mg，在含有11.0-25.0％Cr的不锈钢的基础中作为必需元素。上述Bi自由切削不锈钢的特征还在于采用铁素体不锈钢或马氏体不锈钢。

4. 发明专利

JP2005015856A Inexpensive stainless steel wire having excellent elongation characteristic, and fine wire and method for manufacturing the same 有权
标题翻译：具有优异延长特性的特殊不锈钢丝，以及精细线及其制造方法
公开(公告)号：JP2005015856A
公开(公告)日：2005-01-20
申请号：JP2003182763
申请日：2003-06-26
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKANO KOJI , TADA YOSHINORI
IPC分类号： C21D8/06 , C21D9/52 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To stably improve the elongation value when annealing is performed in a short period of time in a method of drawing an inexpensive stainless steel wire of a low Ni system (≤10%) to drawing to a fine wire of ≤300 μm in wire diameter, then subjecting the fine wire to strand annealing.
SOLUTION: The inexpensive stainless steel wire having the wire diameter of ≤300 μm and having an elongation characteristic of ≥30% in total elongation is manufactured by containing, by mass %, C to 0.05 to 0.08%, Si to 0.1 to 2.0%, Mn to 0.4 to 10.0, P to ≤0.04%, S to ≤0.03, Ni to 5.0 to 10.0%, Cr to 17.0 to 200%, Cu to 0.1 to 4.0%, and N to 0.05 to 0.07%, composing the balance of inevitable impurities and controlling an M value (%) to ≤-30°C.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了在将低Ni体系（≤10％）的廉价不锈钢丝拉制成细线的方法中，在短时间内进行退火以稳定地提高伸长率值线径≤300μm，然后对细线进行退火。＆lt; P＆gt;解决方案：通过以质量％计含有以质量％计含有C至0.05至0.08％的Si至0.1至0.1％的线径为≤300μm并且具有≥30％的伸长率的廉价不锈钢丝 2.0％，Mn为0.4〜10.0，P为≤0.04％，S为≤0.03，Ni为5.0〜10.0％，Cr为17.0〜200％，Cu为0.1〜4.0％，N为0.05〜0.07％将不可避免的杂质的平衡和M值（％）控制在≤-30℃。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004307977A Wire rod of nonmagnetic sulfur free-cutting stainless steel superior in cold drawability and corrosion resistance 有权
公开(公告)号：JP2004307977A
公开(公告)日：2004-11-04
申请号：JP2003106211
申请日：2003-04-10
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKANO KOJI , FUKUMOTO SHIGEO , KIZAKI MASAYUKI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a wire rod of a nonmagnetic sulfur free-cutting stainless steel superior in cold drawability and corrosion resistance.
SOLUTION: The wire rod of a nonmagnetic sulfur free-cutting stainless steel comprises, by mass%, 0.02-0.08% C, 0.1-1.0% Si, 2.0-5.0% Mn, 0.03-0.15% P, 0.1-0.25% S, 0.001-0.02% B, 7-12% Ni, 19-22% Cr, 0.1-3.5% Cu, 0.05-0.22% N, 0.005-0.015% O, 0.005% or less Al, and the balance being Fe and unavoidable impurities and has a value M of -100 (%) or less. The wire rod further includes one or more elements from among, by mass%, 0.1-2.5% Mo, 0.0005-0.01% Ca, 0.0005-0.01% Mg, and 0.0005-0.01% Zr, as needed.
COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2004300516A Ferritic stainless steel stock having excellent magnetic property, cold forging, and production method therefor 审中-公开
公开(公告)号：JP2004300516A
公开(公告)日：2004-10-28
申请号：JP2003094727
申请日：2003-03-31
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： TAKANO KOJI , TADA YOSHINORI , TANAKA KISUKE
IPC分类号： C21D6/00 , C22C38/00 , C22C38/26 , C22C38/60 , H01F1/14
摘要： PROBLEM TO BE SOLVED: To provide a low cost stainless steel stock for a magnetic component which is excellent in cold forging property and the suppression in the growth of abnormal grains, and to provide a magnetic component. SOLUTION: The ferritic stainless steel stock for cold forging and for a magnetic component consists of a ferritic stainless steel having a composition comprising, by mass, 0.001 to 0.03% C, 11 to 16% Cr, and 0.02 to 0.05% N, and further comprising 0.01 to 0.2-0.5% of one or more kinds of metals selected from Al, Nb, V, Ta, W, and Hf, and in which the A value in formula (1) is ≥820(%), and further, the grain size number in JIS G 0552 of the average ferritic grains in the central part of the stock is 3 to 9: A=42Cr+72Mo+88Si+204Nb+900Al+348V+1680B-300C-340N-140Ni-80Mn-22Cu+310 ...(1). COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2004231984A Austenitic sulfur-containing free-cutting stainless steel 有权
公开(公告)号：JP2004231984A
公开(公告)日：2004-08-19
申请号：JP2003018638
申请日：2003-01-28
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： FUKUMOTO SHIGEO , TAKANO KOJI , HASHIMURA MASAYUKI , HIRATA HIROSHI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide austenitic sulfur-containing free-cutting stainless steel causing no cracking at hot rolling and having excellent corrosion resistance and machinability.
SOLUTION: By using, as basic components, stainless steel consisting of, by mass, 0.01 to 0.10% C, 0.05 to 1.0% Si, 0.5 to 4.0% Mn, 0.05 to 0.40% S, 17 to 20% Cr, 7 to 10% Ni, 0.002 to 0.01% Zr and the balance Fe with inevitable impurities and adding ≤0.005% Al, 0.005 to 0.015% O and 0.0005 to 0.005% Ca if necessary, the percentage by mass of ZrO
2 among oxide inclusions in the steel can be made to ≥3%. Besides the above, by regulating the amounts of Mn and S to ≥0.5% and ≥0.05%, respectively, the proportion between the number of the oxide inclusions and the number of the oxide inclusions having sulfides around them is made to ≥5%.
COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2001355048A FERRITIC FREE-CUTTING STAINLESS STEEL 失效
公开(公告)号：JP2001355048A
公开(公告)日：2001-12-25
申请号：JP2001076534
申请日：2001-03-16
申请人： NIPPON STEEL CORP
发明人： TAKANO KOJI , OKIMORI MAYUMI , KIKUCHI MASAO , TAKEUCHI KAZUHISA , MURATA WATARU
IPC分类号： C22C38/00 , C22C38/38 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide ferritic stainless steel free from harmful elements such as Pb, excellent in corrosion resistance and hot producibility and also excellent in environmental harmonization. SOLUTION: This stainless steel has chemical components containing, by mass,

9. 发明专利

JP2001247941A AUSTENITIC STAINLESS STEEL FOR HOT WORKING, AND METHOD OF HEAT TREATMENT AND HOT WORKING THEREFOR 失效
公开(公告)号：JP2001247941A
公开(公告)日：2001-09-14
申请号：JP2000062641
申请日：2000-03-07
申请人： NIPPON STEEL CORP
发明人： SHIMADA TAKAYUKI , OIKAWA YUSUKE , SATSUNOKI TOMIO , TAKANO KOJI
IPC分类号： C21D8/00 , C21D6/00 , C21D9/00 , C22C38/00 , C22C38/44
摘要： PROBLEM TO BE SOLVED: To provide an austenitic stainless steel excellent in hot workability and also to provide a method of heat treatment and hot working therefor. SOLUTION: The austenitic stainless steel for hot working has =40% rate of MnS precipitation and has excellent hot workability. High temperature heat treatment at 1150-1250 deg.C is performed and then low temperature heat treatment at 1000-1150 deg.C for >=2 h is done. The stock, having =40% rate of MnS precipitation, is subjected to low temperature heating and successively to high temperature heating up to rolling temperature to undergo hot rolling.

10. 发明专利

JP2001234297A AUSTENITIC FREE CUTTING STAINLESS STEEL EXCELLENT IN ENVIRONMENTAL AFFINITY 失效
公开(公告)号：JP2001234297A
公开(公告)日：2001-08-28
申请号：JP2000046164
申请日：2000-02-23
申请人： NIPPON STEEL CORP
发明人： KIKUCHI MASAO , KANEKO MICHIRO , TAKANO KOJI , MURATA WATARU
IPC分类号： C22C38/00 , C22C38/54 , C22C38/58 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide an austenitic free cutting stainless steel excellent in environmental affinity and applicable to the wide range of uses without increasing a production cost. SOLUTION: The austenitic free cutting stainless steel excellent in environmental affinity has a composition consisting of, by mass, 0.005-0.15% C, 0.05-1.5% Si, 0.1-2% Mn,

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