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1. 发明专利

JP2009241100A Extrusion die 审中-公开
标题翻译：挤出机
公开(公告)号：JP2009241100A
公开(公告)日：2009-10-22
申请号：JP2008090519
申请日：2008-03-31
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： OKA TAKASHI , NAKAJIMA KAZU
IPC分类号： B21C25/02 , B21C23/00 , B21C23/08
摘要： PROBLEM TO BE SOLVED: To reduce fraction defective by preventing seizure from arising on the surface of an aluminum extruded material and preventing the occurrence of corner cracks and a deterioration in dimensional accuracy of corner parts (the occurrence of shrinkage).
SOLUTION: An aluminum extrusion die 1 is used in which a choke angle is formed on the bearing surface of a die hole, the choke angle θ1 in a corner part 5 is formed larger than the choke angles θ2, θ3 in the flat parts 6, 6 on both sides of the corner part and the choke angle is continuously changed from the θ1 to the θ2, θ3 in the vicinity (choke angle changing region 7) of the corner part.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过防止在铝挤压材料的表面上发生咬合并防止角部裂纹的发生和拐角部件的尺寸精度的劣化（发生收缩）来减少缺陷的部分。解决方案：使用铝模挤压模1，其中在模孔的支承表面上形成扼流角，角部5中的扼流角θ1形成为大于平面中的扼流角θ2，θ3 角部两侧的部分6,6和扼流角从拐角部分附近（阻塞角变化区域7）的θ1向θ2连续变化。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP2004277776A Method of refining aluminum alloy molten metal and flux for refining aluminum alloy molten metal 有权
公开(公告)号：JP2004277776A
公开(公告)日：2004-10-07
申请号：JP2003068423
申请日：2003-03-13
申请人： Kobe Steel Ltd , 株式会社神戸製鋼所
发明人： SHODA RYOJI , NAKAJIMA KAZU
IPC分类号： C22B21/06 , C22B9/10
CPC分类号： Y02P10/212
摘要： PROBLEM TO BE SOLVED: To provide a method for refining Al alloy molten metal by which the yield of Al molten metal is improved by the suppression of the slagging in the surface of the Al molten metal to the utmost while maintaining the high reduction levels of dehydrogenation and the removal of inclusions in alum flux, and further, the removability of slag is improved, and to provide flux for refining Al alloy molten metal. SOLUTION: Aluminum alloy molten metal for malleable aluminum material is subjected to molten metal refining of reducing hydrogen in the molten metal with alum powder as flux for refining, and jointly, slag floated up on the surface of the molten metal is removed. In this case, the content of moisture including crystallization water in the alum powder is controlled to 0.7 to 4.0% by a measuring method by a heating drying mass system, and the amount of the slag to be generated on the molten metal refining is suppressed to ≤3 mass%. COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2003231927A METHOD FOR SMELTING MOLTEN ALUMINUM ALLOY 审中-公开
公开(公告)号：JP2003231927A
公开(公告)日：2003-08-19
申请号：JP2002292628
申请日：2002-10-04
申请人： KOBE STEEL LTD
发明人： SHODA RYOJI , KAMIKAWA KAZUHIRO , NAKAJIMA KAZU
IPC分类号： B22D43/00 , B22D1/00 , C22B7/00 , C22B9/10 , C22B21/06
摘要： PROBLEM TO BE SOLVED: To provide a method for smelting a molten Al alloy, which inhibits slag generation on the surface of the molten Al metal to the utmost, while keeping an excellent property of an alum flux of removing hydrogen and inclusions into the low levels, and improves the yield of the Al molten metal. SOLUTION: This smelting method is characterized by making an average particle diameter of an alum powder to 1 mm or less, and controlling an amount of the generated slag in smelting the above molten metal, not to exceed 3 mass% to the amount of the molten aluminum alloy, in smelting the molten aluminum alloy for wrought materials with the use of an alum powder as a smelting flux, to reduce hydrogen in the molten metal, and removing the slag which has moved up to the surface of the molten metal, from the molten metal. COPYRIGHT: (C)2003,JPO

4. 发明专利

JPH11197772A MANUFACTURE OF COMPOSITE HEAT TRANSFER PIPE 失效
公开(公告)号：JPH11197772A
公开(公告)日：1999-07-27
申请号：JP1797698
申请日：1998-01-14
申请人： KOBE STEEL LTD
发明人： NAKAJIMA KAZU , FUTAMURA SATOSHI
IPC分类号： F28F1/40 , B21D39/00 , B21D53/06
摘要： PROBLEM TO BE SOLVED: To easily and inexpensively obtain a composite heat transfer pipe whose core twisted at given pitches is accurately and closely attached to an outer pipe over the whole circumference. SOLUTION: In a manufacturing method of a composite heat transfer pipe, a twisted core 2 shorter than an outer pipe 1 is inserted therein, a grip part A free from any core is provided on each end of the outer pipe 1, the grip parts A are held by chucks and pulled to contract the diameter of the outer pipe 1, and the inner surface of the outer pipe 1 is closely attached to the outermost circumference of the core 2 over the whole circumference and length. The outer pipe 1 is preferably extended by 4-8% in the longitudinal direction.

5. 发明专利

JPH09271833A MANUFACTURE OF COMBINED FLANGE MEMBER OF ALUMINUM TUBE 失效
公开(公告)号：JPH09271833A
公开(公告)日：1997-10-21
申请号：JP8516496
申请日：1996-04-08
申请人： KOBE STEEL LTD
发明人： YASUDA YOSHINORI , HAYASHI KENJI , KAMATA KUNIO , MEKI TOSHINORI , NAKAJIMA KAZU
IPC分类号： B21C23/22 , F16L23/02
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of alminum tube combined flange member which forms a combined blank of more similar to an article shape than the conventional one, which reduces the process number and which improves the production efficiency in the producing method where two kinds of aluminum alloy members are extruded and the aluminum tube combined flange member is obtained. SOLUTION: A columnar body 3 composed of A3033 material M2 is inserted and filled in a hollow part of a tubular body 2 composed of A7N01 material M1 two layer composition billet 1 is formed, this billet 1 is hot-extruded with an indirect extrusion press 6 by using a die 7 on which plural numbers of die holes 7a of the cross-section shape corresponding to the plane shape of an article flange 11 are installed in a same interval on a concentric circle, a plural number of combined blanks 4 made as one body pressed forcibly in contact with two kinds of aluminum alloy materials in the cross-sectional direction are formed at the same time, next this combined blank 4 is cut by the length corresponding to the thickness of the article flange 11 and a combined member 5 is made individually.

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