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1. 发明申请

WO2009117250A2 HOT FORMING PROCESS FOR METAL ALLOY SHEETS 审中-公开
标题翻译：金属合金板的成型工艺
公开(公告)号：WO2009117250A2
公开(公告)日：2009-09-24
申请号：PCT/US2009/035968
申请日：2009-03-04
申请人： GM GLOBAL TECHNOLOGY OPERATIONS, INC.
发明人： CARTER, Jon, T. , DRAJEWSKI, Paul E. , VERMA, Ravi , LASCESKI, Joshua d.
IPC分类号： B21D22/00 , B21D37/16 , B21D11/02 , B30B15/34 , B21D22/20
CPC分类号： B21D22/02
摘要： Magnesium and other metal alloy sheet materials are deformed at hot forming temperatures into vehicle body panels and other articles. Many such hot forming operations are improved in speed and product quality by predetermining a static recrystallization temperature of the sheet material. As the sheet material is being heated to its hot forming temperature, deformation is commenced below the static recrystallization temperature. As heating and deformation are continued, dynamic recrystallization of the workpiece occurs and deformation may proceed faster and to a greater extent.
摘要翻译：镁和其他金属合金板材在热成型温度下变形成车体板和其他物品。许多这样的热成型操作通过预先确定片材的静态再结晶温度而提高了速度和产品质量。当片材被加热到其热成型温度时，在静态再结晶温度以下开始变形。随着加热和变形的继续，工件发生动态再结晶，变形可能会更快和更大程度地进行。

2. 发明申请

WO2007103717A2 METHODS FOR FORMING ARTICLES HAVING APERTURES AND ARTICLES HAVING SUBSTANTIALLY REDUCED RESIDUAL COMPRESSIVE STRESS 审中-公开
标题翻译：形成具有大幅减少残余应力的孔隙和物品的文章的方法
公开(公告)号：WO2007103717A2
公开(公告)日：2007-09-13
申请号：PCT/US2007/063053
申请日：2007-03-01
申请人： GM GLOBAL TECHNOLOGY OPERATIONS, INC. , LEV, Leonid, C. , CARTER, Jon, T. , CHENG, Yang-Tse , ANG, Carolina, C.
发明人： LEV, Leonid, C. , CARTER, Jon, T. , CHENG, Yang-Tse , ANG, Carolina, C.
IPC分类号： B23B47/28 , B23B35/00
CPC分类号： B23B35/00 , B21J5/00 , B21J5/10 , B23G1/16 , C23C16/27 , C23C16/56 , C23C26/00 , Y10T408/03
摘要： A method for forming an aperture includes stamping an aperture into the article using a pellet, and refining aperture shape(s) and/or aperture dimensions. Methods for forming articles having reduced residual compressive stress are also disclosed. Very generally, the methods include establishing a diamond coating on at least a portion of a substrate, and applying a stress-relief process to the diamond coating, the substrate, or combinations thereof.
摘要翻译：用于形成孔的方法包括使用颗粒将孔压入制品中，并且精炼孔形状和/或孔径尺寸。还公开了具有降低的残余压应力的成型制品的方法。通常，所述方法包括在基底的至少一部分上建立金刚石涂层，以及对金刚石涂层，基底或其组合施加应力消除过程。

3. 发明申请

WO2008095150A1 LUBRICATION OF MAGNESIUM WORKPIECES FOR HOT FORMING 审中-公开
标题翻译：用于热成型的镁工件的润滑
公开(公告)号：WO2008095150A1
公开(公告)日：2008-08-07
申请号：PCT/US2008/052737
申请日：2008-02-01
申请人： GM GLOBAL TECHNOLOGY OPERATIONS, INC.
发明人： KRAJEWSKI, Paul, E. , CARTER, Jon, T.
IPC分类号： B21J3/00 , C10M103/00
CPC分类号： B21D22/201 , B21D22/208 , C10M103/00 , C10M103/06 , C10M2201/0613 , C10M2201/0623 , C10N2240/402 , C10N2240/404 , C10N2240/407 , C10N2250/141 , C23C22/68 , C23C22/83
摘要： The elevated temperature forming of magnesium based alloy workpieces by stretching, drawing, bending (or the like) a surface of the heated workpiece over the forming surface of a forming tool is improved by forming an integral adherent layer of magnesium hydroxide on the tool- contacted surface(s) of the magnesium alloy workpiece. The magnesium hydroxide layer may be formed by treating the surface(s) of the sheet with an aqueous salt solution (e.g., sodium chloride) at a temperature and for a time to form a protective layer of desired thickness (e.g., up to about thirty micrometers). If desired, an additional layer of forming lubricant, such as a film comprising boron nitride, may be applied to the magnesium hydroxide layer.
摘要翻译：通过在成形工具的成形表面上通过拉伸，拉伸，弯曲（或类似）加热的工件的表面在镁合金工件上升高的温度形成，通过在工具接触上形成一体的氢氧化镁粘附层镁合金工件的表面。氢氧化镁层可以通过在温度和温度下用盐水溶液（例如氯化钠）处理片材的表面而形成，以形成所需厚度的保护层（例如，高达约三十微米）。如果需要，可以向氢氧化镁层施加附加的成形润滑剂层，例如包含氮化硼的膜。

4. 发明申请

WO2009129078A1 METHOD OF DIE CASTING AN ALUMINUM ALLOY ARTICLE USING SACRIFICIAL SLEEVE 审中-公开
标题翻译：使用SACVIFICIAL SLEE铸造铝合金制品的方法
公开(公告)号：WO2009129078A1
公开(公告)日：2009-10-22
申请号：PCT/US2009/039608
申请日：2009-04-06
申请人： GM GLOBAL TECHNOLOGY OPERATIONS, INC.
发明人： SHIN, Jongcheol , PARK, Jongwon, B. , HWANG, Inwook , POWELL, Bob, R. , PERRY, Thomas , SACHDEV, Anil, K. , CARTER, Jon, T.
IPC分类号： B22D17/20 , B22D21/04 , B22D15/02
CPC分类号： B22D15/02 , B22D19/0009 , B22D21/04
摘要： Some die cast aluminum alloy articles have internal cylindrical surfaces such as the round internal cylinder surfaces of a cylinder block for an internal combustion engine. During casting solidification molten aluminum alloys shrink against the metallic permanent mold tools used to mold and define such internal surfaces, and tend to stick to the tool surfaces making it difficult to remove the casting. The tendency of some aluminum casting alloys to solder to the tool can further intensify sticking, hi this invention, an aluminum alloy sleeve is placed on and over the tool surface before casting and the sleeve isolates the tool from the molten aluminum. The sleeve becomes bonded to the casting and facilitates removal of the casting from the tool. The sleeve may be (and preferably is) fully machined from the internal casting surface. The sleeve may be of the same composition as the casting, in which case handling and recycling of machining chips would be facilitated. The practice of the invention is also applicable to die casting of magnesium alloys using magnesium sacrificial sleeves.
摘要翻译：一些压铸铝合金制品具有诸如用于内燃机的气缸体的圆形内圆柱表面的内圆柱表面。在铸造凝固期间，熔融铝合金收缩用于模制和限定这种内表面的金属永久模具，并且倾向于粘附到工具表面，使得难以移除铸件。一些铝铸造合金焊接到工具上的趋势可以进一步加强粘附。在本发明中，在铸造之前铝合金套筒放置在工具表面上和上方，并且套筒将工具与熔融铝隔离。套筒粘合到铸件上并便于从工具中移除铸件。套筒可以（并且优选地）从内部铸造表面完全加工。套筒可以具有与铸件相同的组成，在这种情况下，加工芯片的处理和回收将被促进。本发明的实践也适用于使用镁牺牲套管的镁合金压铸。

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