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1. 发明专利

JP2006219556A Two-pack type anti-seizing agent for hot plastic working and method for producing seamless pipe using the same 有权
标题翻译：用于热塑性工作的两个包装类型防止剂和使用它的生产无缝管的方法
公开(公告)号：JP2006219556A
公开(公告)日：2006-08-24
申请号：JP2005033015
申请日：2005-02-09
申请人： Palace Chemical Co Ltd , Sumitomo Metal Ind Ltd , パレス化学株式会社 , 住友金属工業株式会社
发明人： IIDA SUMIO , IMAMURA MASAMI , TANAKA YUJI , SHIMODA KAZUMUNE , HORI HIROFUMI , MOTOKI AKIRA , MORI SHIZUO
IPC分类号： C10M141/00 , B21B19/04 , B21B27/10 , C10M125/10 , C10M125/18 , C10M125/22 , C10M125/24 , C10M125/26 , C10M129/06 , C10M129/08 , C10M129/26 , C10M129/34 , C10M129/52 , C10M133/08 , C10M145/40 , C10M173/02 , C10N10/02 , C10N10/04 , C10N10/06 , C10N10/12 , C10N10/16 , C10N30/06 , C10N40/24
CPC分类号： C10M173/02 , B21B19/04 , C10M2201/062 , C10M2201/081 , C10M2201/085 , C10M2201/087 , C10M2201/10 , C10M2201/102 , C10M2207/021 , C10M2207/10 , C10M2207/122 , C10M2207/123 , C10M2207/124 , C10M2209/12 , C10M2215/02 , C10N2210/01 , C10N2210/02 , C10N2210/03 , C10N2210/08 , C10N2230/06 , C10N2240/402 , C10N2240/403 , C10N2240/404 , C10N2250/02 , C10N2250/121
摘要： PROBLEM TO BE SOLVED: To obtain a two-pack type anti-seizing agent for hot plastic working, in which since an anti-seizing agent applied to a disk roll type guide shoe is not made to flow by cooling water of a roll, the anti-seizing agent is supplied and retained on the peripheral surface of the disk roll type guide shoe, is not adhered to the roll and does not cause a roll slip between the roll and a tubular material and the tubing material is punched and rolled and to provide a method for producing a seamless pipe using the same.
SOLUTION: The two-pack type anti-seizing agent comprises a first aqueous solution that contains 10-30% by mass calculated as an anhydride of sodium silicate when the mass of the total of the first aqueous solution is 100% by mass and a second aqueous solution containing one or more kinds selected from the group consisting of an organic acid, its water-soluble amine salt, an inorganic acid, its water-soluble amine salt, a water-soluble amine, a water-soluble alcohol and a water-soluble metal chloride.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了获得用于热塑性加工的双组分型抗咬合剂，其中由于施加到圆盘辊型导靴的防咬住剂不会通过冷却水的流动而流动防卷曲剂被供给并保持在盘辊型导靴的周面上，不粘附到辊上，并且不会在辊和管状材料之间导致辊滑动，并且管材料被冲压，并提供一种使用其制造无缝管的方法。解决方案：双组分型防卡剂包含第一水溶液，当第一水溶液的总质量为100质量％时，含有10-30质量％计，作为硅酸钠的酸酐计和含有选自有机酸，其水溶性胺盐，无机酸，其水溶性胺盐，水溶性胺，水溶性醇和水溶性胺的一种或多种的第二水溶液，以及水溶性金属氯化物。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2010227997A Glass lubricant for making tube by hot extrusion of metallic material and method of making tube by hot extrusion using the same 审中-公开
标题翻译：用于通过热挤压金属材料制造管的玻璃润滑剂和使用其进行热挤压制造管的方法
公开(公告)号：JP2010227997A
公开(公告)日：2010-10-14
申请号：JP2009081618
申请日：2009-03-30
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MATSUMOTO KEIJI , SHIMODA KAZUMUNE , HIDAKA YASUYOSHI , MURAKAMI KOSUKE , TAJIMA JUNPEI
IPC分类号： B21C23/32
摘要： PROBLEM TO BE SOLVED: To provide a glass lubricant for making tubes by hot extrusion, which improves the stripping resistance of glass, reduces the rough surface of hot extruded tube by pickling and the pickling cost, and also suppresses defects such as forced marks and seizure.
SOLUTION: The glass lubricant for making tubes by hot extrusion of the metallic material is composed of a silicate glass lubricant which is an alkali metal oxide of 12-30 mass% in total quantity and the total quantity of one or more kinds of Al
2 O
3 , CaO and MgO is 20-40 mass%. However, K
2 O is defined as ≥1/3 of the total quantity of the alkali metal oxide, and Al
2 O
3 is defined as not ≥1/4 of the total quantity of one or more kinds of Al
2 O
3 , CaO and MgO. In this glass lubricant for making tubes by hot extrusion, it is desired to be composed of the silicate glass lubricant including B
2 O
3 of ≤25 mass% and it is suitable to use as the external lubricant of the metallic material which is worked by the hot extrusion.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供通过热挤压制造管的玻璃润滑剂，其提高了玻璃的剥离性，通过酸洗和酸洗成本降低了热挤压管的粗糙表面，并且还抑制了强制性的缺陷标记和扣押。解决方案：用于通过金属材料的热挤压制造管的玻璃润滑剂由总量为12-30质量％的碱金属氧化物的硅酸盐玻璃润滑剂和一种或多种另外，CaO和MgO为20〜40质量％。然而，K <2> O定义为碱金属氧化物总量的≥1/ 3，并且定义了Al 2 O 3 一种或多种Al 2 O 3 ，CaO和MgO的总量不得≥1/ 4。在用于通过热挤压制造管的玻璃润滑剂中，期望由包含≤25质量％的B 2 3 的硅酸盐玻璃润滑剂构成，并且它是合适的用作通过热挤压加工的金属材料的外部润滑剂。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2009090326A Glass lubricant for hot extrusion, and hot extrusion method for metallic material and production method for metal tube using the same 有权
标题翻译：用于热挤压的玻璃润滑剂和用于金属材料的热挤压方法和使用其的金属管的生产方法
公开(公告)号：JP2009090326A
公开(公告)日：2009-04-30
申请号：JP2007263207
申请日：2007-10-09
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： MATSUMOTO KEIJI , SHIMODA KAZUMUNE , HIDAKA YASUYOSHI , MURAKAMI KOSUKE , TAJIMA JUNPEI
IPC分类号： B21C23/32 , B21C23/00 , C10M103/00 , C10M103/06 , C10N20/00 , C10N20/02 , C10N30/00 , C10N40/24
摘要： PROBLEM TO BE SOLVED: To provide a glass lubricant for hot extrusion with which glass remaining in the material to be worked after hot extrusion and glass stuck to the inside of a container can be efficiently removed. SOLUTION: (1) Disclosed is a glass lubricant for hot extrusion having a linear expansion coefficient of 80×10 -7 (cm/cm/°C) or below. (2) Disclosed is a glass lubricant for hot extrusion used as a front lubricant and/or an inside lubricant and having a linear expansion coefficient of 80×10 -7 (cm/cm/°C) or below, and whose viscosity at 1,000 to 1,250°C is 10 2.5 to 10 4 poise. (3) Disclosed is a glass lubricant for hot extrusion used as a front lubricant and having a linear expansion coefficient of 80×10 -7 (cm/cm/°C) or below, and whose viscosity at 1,000 to 1,250°C is 10 0 to 10 2.5 poise. (4) Disclosed are a hot extrusion method for a metallic material using the lubricant, and a production method suitably applied to a metal tube, particularly, to a seamless tube. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于热挤压的玻璃润滑剂，其可以有效地除去在热挤压之后残留在待加工材料中的玻璃和粘附在容器内部的玻璃。解决方案：（1）公开了线性膨胀系数为80×10 -7 （cm / cm /℃）以下的热挤压用玻璃润滑剂。（2）公开了一种用于热挤出的玻璃润滑剂，其用作前润滑剂和/或内部润滑剂，并且具有80×10 -7 （cm / cm /℃）的线膨胀系数，或并且其在1,000至1250℃下的粘度为10 2.5 至10 4 。（3）公开了一种用于热挤出的玻璃润滑剂，其用作前润滑剂，线膨胀系数为80×10 -6（cm / cm /℃）或更低，其粘度在 1,000至1,250℃是10 0 至10 2.5 。（4）公开了一种使用该润滑剂的金属材料的热挤压方法，适用于金属管，特别是无缝管的制造方法。版权所有（C）2009，JPO＆INPIT

4. 发明专利

JP2009018338A Pusher device for piercing and method of manufacturing seamless tube using it 有权
标题翻译：用于夯实的推动装置和使用其制造无缝管的方法
公开(公告)号：JP2009018338A
公开(公告)日：2009-01-29
申请号：JP2007184901
申请日：2007-07-13
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： YAMAKAWA TOMIO , SHIMODA KAZUMUNE
IPC分类号： B21B23/00 , B21B19/04
CPC分类号： B21B19/04 , B21B23/00 , B21B39/06 , B21B2261/08 , B21B2261/10
摘要： PROBLEM TO BE SOLVED: To provide a pusher device with which thickness deviation in the top part of a tube stock manufactured by pusher piercing is suppressed.
SOLUTION: The pusher device 4 is provided with a cylinder device 30 and a pusher mandrel 34. The cylinder device 30 contains a cylinder shaft 32. The pusher mandrel 34 is attached to the top of the cylinder shaft 32 and the top of the pusher mandrel 34 is brought into contact with the rear end of a billet 20. The cross-sectional area Sp of the pusher mandrel 34 and the cross-sectional area Sb of the billet 20 satisfy formula (1): 0.3≤Sp/Sb. Further, the length Lp of the pusher mandrel 34 and the cross-sectional area Sp of the pusher mandrel 34 satisfy formula (2): Lp/Sp≤1.2. The shifting distance Lc of the top of the cylinder shaft 32 when piercing and the outside diameter Dc of the cylinder shaft 32 satisfy formula (3): Lc/Dc≤45.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种推压装置，通过推压穿孔制造的管材的顶部的厚度偏差被抑制。解决方案：推动装置4设置有气缸装置30和推动心轴34.气缸装置30包含气缸轴32.推动心轴34附接到气缸轴32的顶部和顶部推动心轴34与坯料20的后端接触。推动心轴34的横截面面积Sp和坯料20的横截面面积Sb满足式（1）：0.3≤Sp/ Sb 。此外，推动心轴34的长度Lp和推动心轴34的横截面面积Sp满足式（2）：Lp /Sp≤1.2。当汽缸轴32的顶部在穿刺时的移动距离Lc和缸轴32的外径Dc满足公式（3）：Lc /Dc≤45。版权所有（C）2009，JPO＆INPIT

5. 发明专利

JP2006181596A Method for piercing piercer 有权
标题翻译：叮咬的方法
公开(公告)号：JP2006181596A
公开(公告)日：2006-07-13
申请号：JP2004376260
申请日：2004-12-27
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HORI HIROFUMI , SHIMODA KAZUMUNE
IPC分类号： B21B19/04
摘要： PROBLEM TO BE SOLVED: To provide a method for piercing a piercer by which the internal surface flaws of a shell after piercing can be suppressed.
SOLUTION: In this method, the conditions of the piercer are set so that the number N of rotary forging which is defined by the next formula (1) satisfies the next formula (2). The formula (1) and the formula (2) are N=2×L/(Vs/EL)×Brps (1) and N
摘要翻译：要解决的问题：提供一种刺穿穿孔器的方法，通过该方法可以抑制穿孔后壳体的内表面缺陷。解决方案：在该方法中，设定穿孔机的条件，使得由下式（1）定义的旋转锻造的数量N满足下式（2）。式（1）和式（2）分别为N = 2×L /（Vs / EL）×Brps（1）和N

6. 发明专利

JP2008161906A METHOD FOR PRODUCING SEAMLESS STEEL PIPE MADE OF HIGH Cr-HIGH Ni-BASED ALLOY STEEL 有权
标题翻译：高铬高镍合金钢生产无缝钢管的方法
公开(公告)号：JP2008161906A
公开(公告)日：2008-07-17
申请号：JP2006353578
申请日：2006-12-28
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： HIRASE NAOYA , YAMAKAWA TOMIO , SHIMODA KAZUMUNE
IPC分类号： B21B19/04 , C21D8/10 , C22C38/00 , C22C38/58
CPC分类号： B21B19/04 , B21B3/02 , B21B37/76 , B21B37/78 , B21B45/004 , B21B2261/04 , B21B2261/08 , B21B2261/20 , B21B2275/04 , C21D8/10 , C22C38/001 , C22C38/04 , C22C38/06 , C22C38/42 , Y10S72/70
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a seamless steel pipe made of a high Cr-high Ni-based alloy in which the generation of melted inside rash is prevented, and also, the service life of a plug can be improved.
SOLUTION: When the stock to be rolled made of a high Cr-high Ni based alloy steel comprising, by mass, 20 to 30% Cr, 30 to 50% Ni and one or more selected from Mo and W by ≥1.5% in terms of Mo+0.5W is subjected to gradient piercing rolling, the stock to be rolled is heated under the conditions satisfying inequality; T≤1575-4.45×V
f -104.7×{-ln(t
h /r
o )}, and is thereafter subjected to gradient piercing rolling under the conditions satisfying a roll gorge peripheral speed (m/sec) of ≥2.3 m/sec. In the inequality, T denotes a heating temperature (°C); V
f denotes the roll peripheral speed (m/sec) in the roll gorge; r
o denotes the radius (mm) of an inlet side stock billet; and t
h denotes the thickness (mm) of the pipe stock after the piercing.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决问题的方案：提供一种制造由高Cr高Ni基合金制成的无缝钢管的方法，其中防止熔化的内部皮疹的产生，并且还可以使塞子的使用寿命要改进＆lt; P＆gt;解决方案：当由高Cr高Ni基合金钢制成的轧制坯料时，将质量为20〜30％的Cr，30〜50％的Ni和选自Mo和W中的一种以上，≥1.5 以Mo + 0.5W计的％进行梯度穿孔轧制，在满足不等式的条件下加热待轧制的坯料; T≤1575-4.45×V -104.7×ä-ln（t h / r o }}，然后进行梯度在满足辊道圆周速度（m / sec）≥2.3m/ sec的条件下进行穿孔轧制。在不等式中，T表示加热温度（℃）; V f 表示辊道中的辊圆周速度（m / sec） r o 表示入口侧坯料坯料的半径（mm）; t h 表示穿孔后管材的厚度（mm）。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007314875A Antioxidant composition for heat-treatment of steel pipe 审中-公开
标题翻译：用于热处理钢管的抗氧化剂组合物
公开(公告)号：JP2007314875A
公开(公告)日：2007-12-06
申请号：JP2007114861
申请日：2007-04-24
申请人： Sumitomo Metal Ind Ltd , Takara Standard Co Ltd , タカラスタンダード株式会社 , 住友金属工業株式会社
发明人： SHIMODA KAZUMUNE , YAMAKAWA TOMIO , OKADA KOICHI , HIDAKA YASUYOSHI , IIDA SUMIO , DOHARA TADASHI , MATSUMOTO KEIJI , MURAKAMI KOSUKE , TAKEUCHI KENJI , AKIYAMA SHUICHI
IPC分类号： C21D1/70 , C03C8/02 , C03C8/04 , C03C8/22 , C21D1/26 , C21D9/08
摘要： PROBLEM TO BE SOLVED: To provide an antioxidant composition for a heat-treatment of a steel pipe, capable of preventing formation of roller marks on the obtained steel pipe by inhibiting oxidation of the steel pipe to suppress formation of scales in the heat-treatment of the steel pipe.
SOLUTION: The antioxidant composition for the heat-treatment of the steel pipe comprises a plurality of glass frits having different softening points. Among the plurality of glass frits, at least one glass frit has a viscosity of 1,000-1,000,000 dPa s at 1,200°C and another glass frit has a viscosity of 1,000-1,000,000 dPa s at 700°C.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：待解决的问题：提供一种用于钢管的热处理的抗氧化剂组合物，其能够通过抑制钢管的氧化来防止在所获得的钢管上形成辊痕，以抑制热量中的氧化皮的形成钢管的处理。解决方案：用于钢管热处理的抗氧化剂组合物包括具有不同软化点的多个玻璃料。在多个玻璃料中，至少一个玻璃料在1,200℃下的粘度为1,000-1,000,000dPa·s，另一玻璃料在700℃下的粘度为1,000-1,000,000dPa·s。版权所有（C）2008，JPO＆INPIT

8. 发明专利

JP2012121045A Method for manufacturing seamless pipe 有权
标题翻译：制造无缝管的方法
公开(公告)号：JP2012121045A
公开(公告)日：2012-06-28
申请号：JP2010273205
申请日：2010-12-08
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SAITO KENICHI , SHIMODA KAZUMUNE , YAMAKAWA TOMIO
IPC分类号： B21B19/04 , B21B23/00 , B21B25/00
CPC分类号： B21B21/02 , B21B19/04 , B21B25/00 , B21B2261/08 , B21B2261/10
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a seamless pipe for surely preventing occurrence of an inner surface flaw due to central segregation in a billet or porosity, in piercing and rolling.SOLUTION: By using a piercing machine where a pusher and a plug are arranged on an inlet side and an outlet side along a pass line, respectively, and a plurality of inclined rolls are oppositely arranged around the plug, piercing rolling is performed in a condition where a plug tip drawing ratio (TDF) represented by the following expression (1) satisfies following expression (2) when the maximum diameter of an inferior quality area including center segregation and porosity within a billet cross section is denoted by d [mm]. TDF=(Bd-D1)/Bd (1), TDF≤-0.50×(d/Bd)+0.06 (2), wherein Bd denotes the diameter [mm] of the billet, and D1 denotes the interval [mm] between the inclined rolls at the plug tip position in the expression (1) and expression (2).
摘要翻译：要解决的问题：提供一种用于制造无缝管的方法，其可靠地防止在穿孔和轧制中由于坯料或孔隙中的中心偏析引起的内表面缺陷的发生。解决方案：通过使用穿孔机，其中推动器和插头分别沿着通行线布置在入口侧和出口侧，并且多个倾斜辊相对地布置在插塞周围，进行穿孔轧制在将包含中心偏析和坯料横截面内的孔隙率的劣质区域的最大直径用d [...]表示的情况下，由下述式（1）表示的塞头延伸率（TDF）满足下式（2）毫米]。 TDF =（Bd-D1）/ Bd（1），TDF≤-0.50×（d / Bd）+0.06（2）其中，Bd表示钢坯的直径[mm]，D1表示钢坯的直径[mm] 在表达式（1）和表达式（2）中的尖端位置处的倾斜辊。版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2012021121A Antioxidant agent, process for producing antioxidant agent, and process for producing metallic material 有权
标题翻译：抗氧化剂，生产抗氧化剂的方法和生产金属材料的方法
公开(公告)号：JP2012021121A
公开(公告)日：2012-02-02
申请号：JP2010162159
申请日：2010-07-16
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SHIMODA KAZUMUNE , YAMAKAWA TOMIO , MURAMATSU KOJI , INOUE YUJI , NISHIMORI JUNICHI , HIDAKA YASUYOSHI , MATSUMOTO KEIJI , KATO TAKAHISA , AKIYAMA SHUICHI
IPC分类号： C10M125/28 , C03C8/02 , C10M125/10 , C10M125/26 , C10N10/04 , C10N20/00 , C10N20/02 , C10N30/10 , C10N40/24
CPC分类号： C09K15/02 , B05D3/02 , B21B45/0242 , C03C3/087 , C03C3/093 , C03C8/02 , C03C8/04 , C03C8/14 , C03C8/16 , C03C8/22 , C10M173/02 , C10M2201/062 , C10M2201/087 , C10M2201/103 , C10M2201/12 , C10N2210/02 , C10N2230/10 , C10N2240/40 , C10N2240/403 , C21C7/06 , C21D1/70 , C21D8/0226 , C21D8/0284 , C21D8/10 , C23C24/10
摘要： PROBLEM TO BE SOLVED: To provide an antioxidant agent which can prevent the formation of scale on the surface of a heated metallic material more effectively compared with conventional antioxidant agents.SOLUTION: The antioxidant agent comprises multiple glass frits having different softening points and an inorganic compound having a melting point of ≤600°C. The inorganic compound can be softened mostly in a low temperature range around 600°C. The multiple glass frits can be softened mostly in a temperature range of from 600 to 1,300°C. Therefore, the antioxidant agent can cover the surface of a metallic material in a broad temperature range and can prevent the oxidization of the surface of the metallic material and thereby prevent the formation of scale on the surface.
摘要翻译：要解决的问题：与常规的抗氧化剂相比，提供一种能够更有效地防止加热金属材料表面上形成垢的抗氧化剂。解决方案：抗氧化剂包括具有不同软化点的多个玻璃料和熔点≤600℃的无机化合物。无机化合物主要在600℃左右的低温范围内软化。多个玻璃料可以在600至1300℃的温度范围内软化。因此，抗氧化剂可以在宽的温度范围内覆盖金属材料的表面，并且可以防止金属材料的表面的氧化，从而防止在表面上形成氧化皮。版权所有（C）2012，JPO＆INPIT

10. 发明专利

JP2009082988A Tube shell for manufacturing seamless steel pipe and manufacturing method therefor 有权
标题翻译：用于制造无缝钢管的管壳及其制造方法
公开(公告)号：JP2009082988A
公开(公告)日：2009-04-23
申请号：JP2008282064
申请日：2008-10-31
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： SHIMODA KAZUMUNE , YAMAKAWA TOMIO , SENBA MITSUYUKI , HORI HIROFUMI , KONDO TSUNEO
IPC分类号： B21B19/04 , B21B3/02 , C21D8/10 , C22C38/00 , C22C38/58
CPC分类号： C22C38/44 , B21B3/02 , B21B19/04 , C22C38/02 , C22C38/58 , Y10S72/70
摘要： PROBLEM TO BE SOLVED: To provide a pierced tube shell of an austenitic stainless steel having a good inner surface condition and to establish a means with which can perform mass production on an industrial scale of a good quality seamless steel pipe of stainless steel.
SOLUTION: The austenitic stainless steel billet containing ≤0.040% P, ≤0.020% S and ≤13.00% Ni is pierced under conditions such that the pipe expansion ratio H (outer diameter of tube shell/diameter of the billet to be worked) satisfies the following equation of {P(%)/(0.025×H-0.01)}
2 +{S(%)/(0.015×H-0.01)}
2 ≤1, to obtain the tube shell of the austenitic stainless steel. When manufacturing a seamless steel pipe of the austenitic stainless steel, the above tube shell is rolled to form a pipe.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供具有良好内表面状态的奥氏体不锈钢的穿孔管壳，并且建立了可以在不锈钢质量好的无缝钢管的工业规模上进行批量生产的装置。
解决方案：在管膨胀比H（管壳的外径/待加工的坯料的直径）的条件下，刺穿含有≤0.040％P，≤0.020％S和≤13.00％Ni的奥氏体不锈钢坯料）满足以下等式äP（％）/（0.025×H-0.01）} 2 +äS（％）/（0.015×H-0.01）} 1，获得奥氏体不锈钢管壳。当制造奥氏体不锈钢的无缝钢管时，上述管壳被轧制以形成管。版权所有（C）2009，JPO＆INPIT

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