专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6128820A Method of repairing damaged turbine rotor wheels using differentially controlled temperatures 有权
标题翻译：使用差分控制温度修复损坏的涡轮转子轮的方法
公开(公告)号：US6128820A
公开(公告)日：2000-10-10
申请号：US200725
申请日：1998-11-27
申请人： John Francis Nolan , Gerald Richard Crawmer , Eloy Vincent Emeterio
发明人： John Francis Nolan , Gerald Richard Crawmer , Eloy Vincent Emeterio
IPC分类号： B23K9/00 , B23K9/02 , B23K9/028 , B23K9/095 , B23K9/16 , B23K9/167 , B23P6/00 , C21D1/30 , C21D9/38 , F01D5/00 , F01D5/06 , G01N29/24 , B23P15/00
CPC分类号： B23P6/005 , B23K9/0026 , B23K9/0213 , B23K9/028 , B23K9/0956 , B23K9/16 , B23K9/167 , C21D9/38 , F01D5/005 , F01D5/063 , G01N29/24 , B23K2201/001 , C21D1/30 , F05D2230/80 , F05D2250/293 , G01N2291/044 , G01N2291/2675 , G01N2291/2693 , Y10T29/49318 , Y10T29/49737 , Y10T29/49742
摘要： A method of repairing a turbine rotor wheel having a damaged dovetail includes removing the damaged dovetail from the turbine wheel, leaving a turbine wheel body and welding a ring about the turbine wheel body in place of the removed damaged dovetail. During the welding process, including during preheating, welding or stress relieving, the temperature of the wheel body and ring is differentially controlled to introduce residual stresses in the ring. After welding a dovetail is formed in the ring for receiving turbine bucket dovetails. As a result, the ring has residual compressive stresses in a cold condition of the turbine whereby reduced net stresses in the ring in the location of the new dovetail during hot turbine operating conditions are reduced.
摘要翻译：修复具有损坏的燕尾榫的涡轮转子轮的方法包括从涡轮机叶轮移除损坏的燕尾榫，留下涡轮机轮体并且将涡环焊接在涡轮机轮体上以代替已去除的损坏的燕尾榫。在焊接过程中，包括在预热，焊接或应力消除过程中，轮体和环的温度差异受到控制，以在环中引入残余应力。在焊接后，在环中形成燕尾形，用于接收涡轮桶燕尾形。结果，环在涡轮机的冷态下具有残余的压缩应力，从而降低了在涡轮机运行条件期间新型燕尾榫位置处的环中的净应力。

2. 发明授权

US06494683B1 Repaired turbine rotor wheel 有权
标题翻译：修理涡轮转子轮
公开(公告)号：US06494683B1
公开(公告)日：2002-12-17
申请号：US09457718
申请日：1999-12-10
申请人： John Francis Nolan , Gerald Richard Crawmer , Eloy Vincent Emeterio
发明人： John Francis Nolan , Gerald Richard Crawmer , Eloy Vincent Emeterio
IPC分类号： B63H120
CPC分类号： B23P6/005 , B23K9/0026 , B23K9/0213 , B23K9/028 , B23K9/0956 , B23K9/16 , B23K9/167 , B23K2101/001 , C21D1/30 , C21D9/38 , F01D5/005 , F01D5/063 , F05D2230/80 , F05D2250/293 , G01N29/24 , G01N2291/044 , G01N2291/2675 , G01N2291/2693 , Y10T29/49318 , Y10T29/49737 , Y10T29/49742
摘要： A method of repairing a turbine rotor wheel having a damaged dovetail includes removing the damaged dovetail from the turbine wheel, leaving a turbine wheel body and welding a ring about the turbine wheel body in place of the removed damaged dovetail. During the welding process, including during preheating, welding or stress relieving, the temperature of the wheel body and ring is differentially controlled to introduce residual stresses in the ring. After welding a dovetail is formed in the ring for receiving turbine bucket dovetails. As a result, the ring has residual compressive stresses in a cold condition of the turbine whereby reduced net stresses in the ring in the location of the new dovetail during hot turbine operating conditions are reduced.
摘要翻译：修复具有损坏的燕尾榫的涡轮转子轮的方法包括从涡轮机叶轮移除损坏的燕尾榫，留下涡轮机轮体并且将涡环焊接在涡轮机轮体上以代替已去除的损坏的燕尾榫。在焊接过程中，包括在预热，焊接或应力消除过程中，轮体和环的温度差异受到控制，以在环中引入残余应力。在焊接后，在环中形成燕尾形，用于接收涡轮桶燕尾形。结果，环在涡轮机的冷态下具有残余的压缩应力，从而降低了在涡轮机运行条件期间新型燕尾榫位置处的环中的净应力。

3. 发明授权

US5762727A Weld repair process and article repaired thereby 失效
公开(公告)号：US5762727A
公开(公告)日：1998-06-09
申请号：US843175
申请日：1997-04-14
申请人： Gerald Richard Crawmer , John Francis Nolan
发明人： Gerald Richard Crawmer , John Francis Nolan
IPC分类号： B23P6/00 , B23K9/04 , B23K9/14 , B23K9/16 , B23K31/00 , B23K35/00 , B23K35/30 , C21D9/50 , B23K31/02
CPC分类号： B23P6/007 , B23K35/004 , B23K9/044 , B23K9/164 , C21D9/50 , B23K2201/001 , B23K35/3053 , Y10T428/12653 , Y10T428/12965
摘要： A method for weld repairing an article formed of a low-alloy steel, such as a steam turbine component. The method generally includes the step of depositing a first weld repair (14) on a surface of the article, during which a hard heat-affected zone (HAZ) (18) having a fine grain size is formed in the article beneath the surface on which the weld repair (14) is deposited. The first weld repair (14) and at least a portion of the HAZ (18) adjacent the first weld repair (14) are then locally heat treated at a temperature above a critical temperature A.sub.1 of the alloy from which the article is formed. As a result of this localized heat treatment, the original grain structures of the first weld repair (14) and the HAZ (18) are entirely replaced with a fine-grain structure with acceptable hardness. Thereafter, at least one additional weld repair layer (16) is deposited on the first weld repair (14). The first weld repair (14) is intentionally formed to have a sufficient thickness to avoid formation of additional HAZ in the surface of the article as the additional weld repair layer (16) is deposited. Without a post-weld heat treatment of the additional weld repair layer (16) or the article as a whole, the method yields a repair weld (12) that exhibits properties that are comparable to and can even exceed that of the base material (10) of the article.

4. 发明授权

US6049979A Methods for shielding a welding gas turbine repair of a damaged turbine rotor wheel dovetail 有权
标题翻译：用于屏蔽涡轮机转子轮燕尾榫的焊接燃气轮机修理的方法
公开(公告)号：US6049979A
公开(公告)日：2000-04-18
申请号：US200723
申请日：1998-11-27
申请人： John Francis Nolan , Lawrence Michael Grycko , David Roy Parker , Gerald Richard Crawmer
发明人： John Francis Nolan , Lawrence Michael Grycko , David Roy Parker , Gerald Richard Crawmer
IPC分类号： B23K9/00 , B23K9/02 , B23K9/095 , B23K9/167 , C21D1/30 , C21D9/38 , F01D5/00 , B23P15/00
CPC分类号： B23P6/005 , B23K9/0026 , B23K9/0213 , B23K9/0956 , B23K9/167 , C21D9/38 , F01D5/005 , B23K2201/001 , C21D1/30 , F05D2250/293 , G01N2291/044 , G01N2291/2675 , G01N2291/2693 , Y10T29/49318 , Y10T29/49336
摘要： The welding method for repairing a turbine rotor dovetail includes removal of buckets from damaged dovetails, removing a damaged dovetail from a turbine wheel, leaving a rotor wheel body having a rim. A plurality of ring sections are disposed about the wheel body rim, leaving axially opening annular grooves along opposite sides of the wheel. Welding apparatus including an electrode, welding wire and gas-carrying tube are inserted into the groove through an axial face of the wheel. One or more cover plates are disposed to overlie the groove at the location of its opening through the axial face of the wheel to at least partially seal the groove at its opening and maintain welding gas in the groove, enveloping the electrode and weld wire.
摘要翻译：用于修理涡轮转子燕尾榫的焊接方法包括从损坏的燕尾槽中移除铲斗，从涡轮机轮移除损坏的燕尾榫，留下具有轮辋的转子轮体。多个环形部分围绕车轮轮缘设置，沿车轮的相对侧留下轴向打开的环形槽。包括电极，焊丝和气体输送管的焊接装置通过车轮的轴向面插入槽中。一个或多个盖板被设置成在其开口的位置处通过轮的轴向面覆盖在凹槽上，以在其开口处至少部分地密封凹槽，并将焊接气体保持在凹槽中，包围电极和焊丝。

5. 发明授权

US5823745A Method of repairing a steam turbine rotor 失效
标题翻译：修理汽轮机转子的方法
公开(公告)号：US5823745A
公开(公告)日：1998-10-20
申请号：US691276
申请日：1996-08-01
申请人： Karl Rudolph Anderson, III , Gerald Richard Crawmer , Edward Kenneth Ellis , John Francis Nolan , Louis Patrick Earvolino , Robert Ellis Seeley , Joseph John Pepe , Robert Joseph Christoffel , Joseph Louis Van Ullen
发明人： Karl Rudolph Anderson, III , Gerald Richard Crawmer , Edward Kenneth Ellis , John Francis Nolan , Louis Patrick Earvolino , Robert Ellis Seeley , Joseph John Pepe , Robert Joseph Christoffel , Joseph Louis Van Ullen
IPC分类号： F01D5/02 , B23K35/30 , F01D5/00 , F01D5/06 , F01D5/28 , F01D25/00 , F04D29/34
CPC分类号： B23K35/304 , F01D5/005 , F01D5/06 , Y10T29/49318 , Y10T29/49737
摘要： A turbine rotor comprising a radially-inward portion of a steel alloy and a radially-outward rim portion circumscribing the radially-inward portion, the rim portion being formed by a weldment that includes a nickel-base superalloy region joining the rim portion to the inward portion of the turbine rotor, the nickel-base superalloy having a room temperature ultimate tensile strength of at least about 690 MPa.
摘要翻译：一种涡轮转子，其包括钢合金的径向向内部分和围绕径向向内部分的径向向外的边缘部分，所述边缘部分由焊件形成，所述焊件包括将所述边缘部分连接到所述内侧的镍基超合金区域涡轮转子的一部分，镍基超级合金具有至少约690MPa的室温极限拉伸强度。

6. 发明授权

US6117564A Weld repair process and article repaired thereby 失效
标题翻译：焊接维修过程和文章修复
公开(公告)号：US6117564A
公开(公告)日：2000-09-12
申请号：US47564
申请日：1998-03-25
申请人： Gerald Richard Crawmer , John Francis Nolan
发明人： Gerald Richard Crawmer , John Francis Nolan
IPC分类号： B23P6/00 , B23K9/04 , B23K9/14 , B23K9/16 , B23K31/00 , B23K35/00 , B23K35/30 , C21D9/50 , B32B15/18
CPC分类号： B23P6/007 , B23K35/004 , B23K9/044 , B23K9/164 , C21D9/50 , B23K2201/001 , B23K35/3053 , Y10T428/12653 , Y10T428/12965
摘要： A method for weld repairing an article formed of a low-alloy steel, such as a steam turbine component. The method generally includes the step of depositing a first weld repair (14) on a surface of the article, during which a hard heat-affected zone (HAZ) (18) having a fine grain size is formed in the article beneath the surface on which the weld repair (14) is deposited. The first weld repair (14) and at least a portion of the HAZ (18) adjacent the first weld repair (14) are then locally heat treated at a temperature above a critical temperature A.sub.1 of the alloy from which the article is formed. As a result of this localized heat treatment, the original grain structures of the first weld repair (14) and the HAZ (18) are entirely replaced with a fine-grain structure with acceptable hardness. Thereafter, at least one additional weld repair layer (16) is deposited on the first weld repair (14). The first weld repair (14) is intentionally formed to have a sufficient thickness to avoid formation of additional HAZ in the surface of the article as the additional weld repair layer (16) is deposited. Without a post-weld heat treatment of the additional weld repair layer (16) or the article as a whole, the method yields a repair weld (12) that exhibits properties that are comparable to and can even exceed that of the base material (10) of the article.
摘要翻译：一种焊接修补由诸如汽轮机部件的低合金钢形成的制品的方法。该方法通常包括在制品的表面上沉积第一焊接修复（14）的步骤，在该步骤期间，在物体的下表面上形成具有细粒度的硬热影响区（HAZ）（18）焊接修复（14）被沉积。然后在高于形成制品的合金的临界温度A1的温度下对第一焊接修复（14）和与第一焊接修复（14）相邻的HAZ（18）的至少一部分进行局部热处理。作为这种局部热处理的结果，第一焊接修复（14）和HAZ（18）的原始晶粒结构完全被具有可接受硬度的细晶粒结构替代。此后，至少一个附加的焊接修复层（16）沉积在第一焊接修复（14）上。有意地形成第一焊接修复（14）以具有足够的厚度，以避免在附着的焊接修复层（16）沉积时在制品的表面中形成另外的HAZ。没有对附加焊接修复层（16）或整个制品进行后焊接热处理，该方法产生修复焊缝（12），其具有与基材（10）相当并且甚至可以超过基材）的文章。

7. 发明授权

US6085417A Method of repairing a steam turbine rotor 失效
标题翻译：修理汽轮机转子的方法
公开(公告)号：US6085417A
公开(公告)日：2000-07-11
申请号：US106498
申请日：1998-06-29
申请人： Karl Rudolph Anderson, III , Gerald Richard Crawmer , Edward Kenneth Ellis , John Francis Nolan , Louis Patrick Earvolino , Robert Ellis Seeley , Joseph John Pepe , Robert Joseph Christoffel , Joseph Louis Van Ullen
发明人： Karl Rudolph Anderson, III , Gerald Richard Crawmer , Edward Kenneth Ellis , John Francis Nolan , Louis Patrick Earvolino , Robert Ellis Seeley , Joseph John Pepe , Robert Joseph Christoffel , Joseph Louis Van Ullen
IPC分类号： F01D5/02 , B23K35/30 , F01D5/00 , F01D5/06 , F01D5/28 , F01D25/00 , B23P15/00
CPC分类号： B23K35/304 , F01D5/005 , F01D5/06 , Y10T29/49318 , Y10T29/49737
摘要： A method for repairing the rim of a steam turbine rotor, and a weld material for repairing such rotors. The method generally includes the steps of removing a damaged rim and its associated dovetail region, so as to form a surface at the perimeter of the rim portion. A weld repair region is then formed on the surface, which is machined to reconstruct the rim portion and the dovetail region exclusively with the weld repair region. Thereafter, an appropriately configured blade is secured to the rim portion with the dovetail region. The method is particularly intended for the repair of a steel alloy rotor, such as a NiCrMoV, NiMoV and CrMoV alloy, while the weld repair is formed with a nickel-base superalloy whose mechanical and thermal properties are compatible with the repair method and the steel alloy over a broad temperature range.
摘要翻译：一种用于修理汽轮机转子轮辋的方法和用于修理这种转子的焊接材料。该方法通常包括去除损坏的边缘及其相关联的燕尾区域的步骤，以便在边缘部分的周边形成表面。然后在表面上形成焊接修复区域，该焊接修复区域被加工成专门用焊接修复区域重建边缘部分和燕尾区域。此后，适当地构造的叶片用燕尾区域固定到边缘部分。该方法特别用于修复诸如NiCrMoV，NiMoV和CrMoV合金之类的钢合金转子，同时焊接修复由镍基超级合金形成，其中机械和热性质与修复方法和钢相兼容合金在宽温度范围内。

8. 发明授权

US06454531B1 Fabricating turbine rotors composed of separate components 有权
公开(公告)号：US06454531B1
公开(公告)日：2002-09-24
申请号：US09748150
申请日：2000-12-27
申请人： Gerald Richard Crawmer
发明人： Gerald Richard Crawmer
IPC分类号： F01D102
CPC分类号： F01D5/28 , B23K20/129 , B23K2101/001 , F01D5/063
摘要： A steam turbine rotor is constructed from a first forging of a first alloy, and a second forging of a second alloy different than the first alloy. For example, one of the alloys is suitable for use in a high temperature environment and the other in a low temperature environment. The forging ends are contoured so as to provide central portions, which may be disc-shaped, and the contoured portions may be in the shape of truncated cones. A first weld, such as a root weld formed by inertia, friction, or electroslag welding, joins the central portions, and the contoured portions are joined by a second weld different than the first weld, such as a submerged arc weld. This allows the rotor forgings to be joined in relatively inexpensive horizontal facilities, and reduces the demands on the welding technology required to obtain a sound root weld.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式