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1. 发明专利

JPH04254524A METHOD FOR ANNEALING STAINLESS STEEL SHEET 失效
公开(公告)号：JPH04254524A
公开(公告)日：1992-09-09
申请号：JP3140691
申请日：1991-02-01
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STAINLESS STEEL CO
发明人： FURUSAWA YUJI , MAKIHARA KATSUMI , YAMASHITA KOSUKE , SHINYA KENJI , TANIZAKI KEIJI , KOJIMA TOSHIO , MINEURA KIYOSHI
IPC分类号： C21D6/00 , C21D9/46 , C21D9/52
摘要： PURPOSE:To reduce the formation of scales in annealing and pickling equipment for stainless, to reduce the length of the pickling equipment and to reduce running cost or the like. CONSTITUTION:As for the method for annealing an austenitic stainless steel sheet, it is heated from the temp. range of 200 to 400 deg.C to that of 800 to 900 deg.C by a convection heating system at 500 to 200 deg.C/s temp. raising rate. Furthermore, as for the method for annealing a ferritic stainless steel sheet, it is heated from the temp. range of 100 to 300 deg.C to that of 550 to 650 deg.C by a convection heating system at 50 to 200 deg.C/s temp. raising rate.

2. 发明专利

JPS63206454A AUSTENITIC STAINLESS STEEL HAVING SUPERPLASTICITY 失效
公开(公告)号：JPS63206454A
公开(公告)日：1988-08-25
申请号：JP3881087
申请日：1987-02-20
申请人： NIPPON STAINLESS STEEL CO
发明人： OTA YOSHIMITSU , TAKAHASHI ICHIRO , YOSHIDA TAKESHI , MINEURA KIYOSHI
IPC分类号： C22C38/00 , C22C38/40 , C22C38/58
摘要： PURPOSE:To provide superplasticity at a specified temp. to an austenitic stainless steel by incorporating specified amts. of N and Ca and/or Mg into the steel. CONSTITUTION:An austenitic stainless steel ingot consisting of, by weight, 0.1-5.0% Si, 0.5-5.0% Mn, 13-30% Cr, 5-20% Ni, 0.001-0.050% Al, 0.001-0.050% Ca and/or Mg, 0.3-1.5% N and the balance Fe or further contg. =200% superplastic elongation at about 850 deg.C is enabled. The hot workability of the high N steel is further improved by the combined use of Ca and Mg. The ingot gives a metallic material having superplasticity besides nonmagnetism, corrosion resistance and strength peculiar to a conventional austenitic stainless steel.

3. 发明专利

JPS61139655A Directly hot rolling method of cu-ni alloy 失效
标题翻译： Cu-Ni合金的直接热轧方法
公开(公告)号：JPS61139655A
公开(公告)日：1986-06-26
申请号：JP26146084
申请日：1984-12-11
申请人： Nippon Stainless Steel Co Ltd
发明人： MINEURA KIYOSHI , TAKAHASHI ICHIRO
IPC分类号： C22F1/08 , B21B3/00 , C22F1/00 , C22F1/10
摘要： PURPOSE: To make a preworking stage such as a press forging stage unnecessary by hot rolling a Cu-Ni alloy at a specified temp. prescribed by the rate of strain during hot rolling and the Ni content.
CONSTITUTION: A Cu-Ni alloy is heated to a temp. with the range of T[°C] is represented by the equation (where Ni% is the Ni content in the alloy, and εis the rate of strain during hot rolling). The heated Cu-Ni alloy is directly hot rolled without passing through a preworking stage such as the press forging stage.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过在指定温度下热轧Cu-Ni合金来进行预锻造阶段，如锻压阶段。由热轧期间的应变速率和Ni含量规定。构成：将Cu-Ni合金加热至温度。其中T°的范围由等式表示（其中Ni％是合金中的Ni含量，ε是热轧期间的应变速率）。加热的Cu-Ni合金在不经过锻造阶段的预加工阶段直接热轧。

4. 发明专利

JPS6192765A Prevention of carburization in continuous casting 失效
标题翻译：防止连续铸造中的碳化
公开(公告)号：JPS6192765A
公开(公告)日：1986-05-10
申请号：JP21262184
申请日：1984-10-12
申请人： Nippon Stainless Steel Co Ltd
发明人： MINEURA KIYOSHI , TAKAHASHI ICHIRO
IPC分类号： B22D11/10 , B22D11/108 , B22D11/111
CPC分类号： B22D11/111
摘要： PURPOSE:To prevent the formation of a carburied layer on the surface of a steel ingot by changing molten slag which is preliminarily prepd. into a continuous casting mold and forming and maintaining the molten slag layer of an adequate thickness in the initial stage of casting and during the casting operation. CONSTITUTION:The molten slag prepd. by heating and melting preliminarily molding powder by a burner, etc. enriched with oxygen is charged into a casting mold 1 to form the molten slag layer 3 having 4-15mm thickness on the molten metal surface in the mold 1 between the molten metal and the half-molten layer 4 of the molding powder in the initial stage of casting prior to charging of the molding powder in the stage of continuous casting in a continuous casting method consisting in pouring a molten steel 2 from an immersion nozzle 5 into the mold 1, casting said steel, charging the molding powder into the mold 1, forming the molten slag layer 3 and half-molten layer 4 on the molten metal surface and drawing the ingot. The thickness of the layer 3 is maintained within a 4-15mm range by charging of the molten slag, etc. even during the casting operation.
摘要翻译：目的：通过改变预先制备的熔渣，防止钢锭表面形成渗碳层。在铸造的初始阶段和铸造操作期间，形成并保持足够厚度的熔渣层。构成：熔渣预制通过将由富氧氧化物的燃烧器等预先成型的粉末进行加热熔融，将其投入到铸模1中，在熔融金属和熔融金属的熔融金属的熔融金属表面上形成4-15mm厚的熔渣层3 在连续铸造阶段中将成型粉末在浸没喷嘴5中从浸渍喷嘴5注入模具1中的连续铸造方法中，在铸造初始阶段之前，将铸型粉末的半熔融层4，铸造所述钢，将成型粉末装入模具1中，在熔融金属表面上形成熔融熔渣层3和半熔融层4并拉出铸锭。即使在铸造操作期间，通过对熔渣等进行充电，层3的厚度也保持在4-15mm的范围内。

5. 发明专利

JPS62252652A PRODUCTION OF CENTRIFUGALLY CAST TI-CONTAINING ALLOY PIPE 失效
公开(公告)号：JPS62252652A
公开(公告)日：1987-11-04
申请号：JP9381386
申请日：1986-04-23
申请人： NIPPON STAINLESS STEEL CO
发明人： OOTA YOSHIMITSU , MINEURA KIYOSHI , INAGAKI KUNIJI , MIZUGUCHI MASAAKI
IPC分类号： B22D13/10
摘要： PURPOSE:To shut off the atm. so as to prevent the generation of scum and to absorb the generated scum so as to prevent the generation of lumped scum by pouring the melt of a Ti-contg. alloy coated with a scum absorbent into a mold for centrifugal casting. CONSTITUTION:A flux as the scum absorbent is added over the entire surface of the molten Ti-contg. alloy to isolate the melt surface from the air, by which the generation of TiN, TiO2 and Al2O3 is prevented. Further, the floating TiN, TiO2 and Al2O3 are absorbed. The molten metal is then cast into the mold for centrifugal casting under rotation. The flux flows as well together with the molten metal into the mold and the scum absorbent is gathered to the bore side by centrifugal force. Such absorbent is easily removable after casting. The embedment of the lumped scum into the thick-walled part of the cast pipe is, therefore, obviated.

6. 发明专利

JPS6245457A CONTINUOUS CASTING METHOD FOR TITANIUM-CONTAINING STEEL 失效
公开(公告)号：JPS6245457A
公开(公告)日：1987-02-27
申请号：JP18282285
申请日：1985-08-20
申请人： NIPPON STAINLESS STEEL CO
发明人： MINEURA KIYOSHI , SUDO TADAHITO , YOSHIDA SHUJI , FURUKAWA MITSUAKI , OOTA YOSHIMITSU , TAKAHASHI ICHIRO
IPC分类号： C21C7/00 , B22D11/10 , B22D11/108 , C22C33/04
摘要： PURPOSE:To prevent nozzle clogging by continuously casting a molten steel which is subjected to Al deoxidation to a specific ratio of sol. Al prior to continuous casting. CONSTITUTION:The nozzle clogging is prevented by continuously casting the molten steel which is subjected to the Al deoxidation down to 0.040-0.5wt% sol. Al, more preferably 0.060-0.5wt% prior to continuous casting in continuous casing of a Ti-contg. steel kind. The steel may contain 0.040-0.5wt%, more preferably 0.060-0.5wt% Al and may be adjusted to >=0.1 Al%/Ti% in the above-mentioned manner.

7. 发明专利

JPH06212283A ANNEALING METHOD OF STAINLESS STEEL SHEET 失效
公开(公告)号：JPH06212283A
公开(公告)日：1994-08-02
申请号：JP667493
申请日：1993-01-19
申请人： MITSUBISHI HEAVY IND LTD , SUMITOMO METAL IND
发明人： KASAI MASAHIRO , SUEMORI HIDEAKI , SHINYA KENJI , KOJIMA TOSHIO , YOSHINO YOSHIO , MINEURA KIYOSHI
IPC分类号： C21D1/26 , C21D1/76 , C21D9/56
摘要： PURPOSE:To provide the annealing method capable of suppressing scale generating and shortening the pickling time for scale removal in a continuous annealing and pickling apparatus, which continuously anneals and pickles a stainless steel sheet after rolling. CONSTITUTION:At annealing a stainless steel sheet in an annealing furnace, in the case that a stainless steel sheet 21 is for example an austenitic steel sheet, the prescribed heating temp. region is 700-900 deg.C, quickly heating with a temp. rising speed of 40-200 deg.C/sec at the prescribed heating temp. region. Also, in the case of a martensitic steel sheet, the prescribed heating temp. region is 500-650 deg.C, quickly heating with a temp. rising speed of 40-200 deg.C/sec.

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