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公开(公告)号：US4421972A
公开(公告)日：1983-12-20
申请号：US252567
申请日：1981-04-09
CPC分类号： B23K9/092 , B23K9/0673 , B23K2201/06 , B23K2201/14 , B23K2203/10
摘要： A method of arc welding is disclosed. Specifically, a method of pulsed direct current (DC) arc welding is disclosed wherein special pulses of positive direct current are used to weld together work pieces. The special DC pulses are capable of dissipating difficult to reduce oxides which may be present on the surfaces of the work pieces without using a flux. The method is especially useful for fluxless arc welding of aluminum, particularly thin wall aluminum tubing used in making heat exchangers for air conditioning systems.
摘要翻译： 公开了一种电弧焊接方法。 具体地，公开了一种脉冲直流（DC）电弧焊接方法，其中使用正直流的特殊脉冲将工件焊接在一起。 特殊的直流脉冲能够消散难以减少可能存在于工件表面上而不使用焊剂的氧化物。 该方法对于用于制造用于空调系统的热交换器的铝，特别是薄壁铝管的无量纲电弧焊是特别有用的。
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公开(公告)号：US4858305A
公开(公告)日：1989-08-22
申请号：US202892
申请日：1988-06-06
申请人： Kenneth P. Gray , Michael L. McDonough , Bruce J. Poplawski , Daniel P. Gaffaney , Ross A. Moyer
发明人： Kenneth P. Gray , Michael L. McDonough , Bruce J. Poplawski , Daniel P. Gaffaney , Ross A. Moyer
CPC分类号： B21D41/02 , B21D53/085 , Y10T29/4938 , Y10T29/4994 , Y10T29/53122
摘要： A single-station tube expander apparatus bells and expands the open ends of heat exchanger hairpin tubes in a plate-fin heat exchanger unit. A frame supports belling jaw fingers which close over and the open ends of the tubes so that a belling device can enter the tube ends to urge the tube outward into a profile surface formed in the mating faces of the fingers. Also on the frame are mounted expander jaw fingers which close over tube ends which have been belled previously, and hold the associated hairpin tubes against axial movement while expander rods pass into the associated tube legs to urge the hairpin tube legs outward to contact against the fin plates and tube sheets of the fin pack heat exchanger. The belling fingers and belling device move step by step from one tube to another, and the expander gripping fingers and expander rods follow the belling fingers and belling device.
摘要翻译： 单台管式膨胀机装置在板翅式热交换器单元中使换热器发夹管的开口端伸缩并膨胀。 框架支撑闭合的夹爪指状物，其闭合管和开口端，使得鼓环装置可以进入管端部以将管向外推动到形成在手指的配合面中的轮廓表面中。 另外在框架上也是安装有膨胀器夹爪的手指，其紧贴在先前已经被启动的管端上，并且保持相关联的发夹管不受轴向运动，同时扩张杆进入相关的管腿，以将发夹管腿向外推动以接触翅片 翅片组热交换器的板和管板。 鼓指和收紧装置从一个管道逐步移动到另一个管道，并且扩张器夹紧指状物和扩张器杆沿着指尖和鼓铃装置。
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公开(公告)号：US4403135A
公开(公告)日：1983-09-06
申请号：US252568
申请日：1981-04-09
申请人： Ross A. Moyer , Dale E. Jackson
发明人： Ross A. Moyer , Dale E. Jackson
CPC分类号： B23K9/0673 , B23K9/091 , B23K9/092
摘要： A method of arc welding is disclosed. Specifically, a method of pulsed DC arc welding is disclosed wherein the pulse width of the current pulses are modulated to maintain a constant time averaged power flow to the work pieces being welded. This method of arc welding is especially useful with a type of pulsed DC arc welding wherein the ratio of peak current to maintenance current is maintained at a selected high value and the current is cycled in a time duration whereby oxides on the surface of the work pieces are dissipated as the weld is made. When used with this type of pulsed DC arc welding the present method is especially suited for fluxless welding of aluminum work pieces, such as thin wall aluminum tubing used in making heat exchangers for air conditioning systems.
摘要翻译： 公开了一种电弧焊接方法。 具体地，公开了一种脉冲DC电弧焊接方法，其中电流脉冲的脉冲宽度被调制以保持对被焊接的工件的恒定时间平均功率流。 这种电弧焊接方法对于一种类型的脉冲DC电弧焊是特别有用的，其中峰值电流与维持电流的比率保持在选定的高值，并且电流循环在工件的表面上的氧化物 随着焊缝的形成而消散。 当与这种类型的脉冲DC电弧焊接一起使用时，本方法特别适用于铝制工件的无焊剂焊接，例如用于制造用于空调系统的热交换器的薄壁铝管。
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公开(公告)号：US5215245A
公开(公告)日：1993-06-01
申请号：US679985
申请日：1991-04-03
申请人： Ross A. Moyer
发明人： Ross A. Moyer
摘要： A method for roll embossing an enhancement pattern into a surface of a metal strip. The method is intended for use in manufacturing roll formed seam welded metal tubing having interior or exterior surface enhancements to improve the heat transfer characteristics of the tube. Metal strip produced by use of the method has a weld zone adjacent each edge of the strip that does not have the surface pattern embossed upon it but has been rolled to a thickness less than the initial thickness of the strip feedstock. The amount by which the rolled thickness of the strip in the weld zones is reduced from the initial thickness is such that the portions of the strip in the weld zones undergo the same elongation as the central portion of the strip which receives the roll embossed surface enhancement. In this way no tensile stresses are introduced into the weld zone and it has a uniform and predictable thickness that will ensure a good welded seam during later welding into finished tubing.
摘要翻译： 一种用于将增强图案辊压到金属条的表面中的方法。 该方法旨在用于制造具有内部或外部表面增强的辊形缝合焊接金属管，以改善管的传热特性。 通过使用该方法生产的金属带具有邻近带的每个边缘的焊接区域，该焊接区域不具有在其上压花的表面图案，但已经被轧制成小于带材原料的初始厚度的厚度。 焊接区域中的带材的轧制厚度从初始厚度减小的量使得焊接区域中的条带的部分经历与接收辊压花表面增强的条带的中心部分相同的伸长率 。 以这种方式，没有拉伸应力被引入到焊接区域中，并且其具有均匀且可预测的厚度，这将在随后的焊接成成品管道期间确保良好的焊缝。
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公开(公告)号：US4995252A
公开(公告)日：1991-02-26
申请号：US319363
申请日：1989-03-06
IPC分类号： B21D17/00 , B21B13/10 , B21B15/00 , B21B17/08 , B21B23/00 , B21C37/20 , B21D53/06 , B21H7/18
CPC分类号： B21B23/00 , B21B17/08 , B21C37/202 , B21C37/207 , B21H7/187 , B21B13/103 , B21B2015/0028
摘要： A method and machine for forming internal enhancement ribs in heat exchanger pipe or tubing comprises a mandrel which is supported within the tubing and a plurality of opposed rotary dies which have their axes perpendicular to the tube axis so that they rotate in the direction parallel to the tube axis. The rotary dies have a circumferential contact portion that has a concave arcuate profile. In one embodiment, the circumferential surface is scalloped with a succession of axially raised portions. In another embodiment, the rotary die carries a plurality of circumferential rollers.
摘要翻译： 一种用于在热交换器管或管中形成内部增强肋的方法和机器包括支撑在管道内的心轴和多个相对的旋转模具，其轴线垂直于管轴线，使得它们沿平行于 管轴。 旋转模具具有凹形弧形轮廓的周向接触部分。 在一个实施例中，圆周表面被扇形地带有一系列轴向凸起部分。 在另一个实施例中，旋转模具承载多个周向辊。
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公开(公告)号：US4402240A
公开(公告)日：1983-09-06
申请号：US221094
申请日：1980-12-29
申请人： Ross A. Moyer
发明人： Ross A. Moyer
IPC分类号： B21C37/20 , B21C37/22 , B21C37/26 , B21D28/12 , B21G7/02 , B23D25/12 , B23D33/00 , B23P25/00 , B26D1/28 , B26D1/40 , B26D1/62 , B26D3/12
CPC分类号： B23D33/00 , B23D25/12 , Y10T83/0515 , Y10T83/4691 , Y10T83/483 , Y10T83/4833 , Y10T83/4836
摘要： A method and apparatus for slitting ribbon stock for use in making fins for a heat exchanger. A pair of slitter wheels are mounted to co-act on separate shafts. One of the shafts is driven by a motor and the other shaft is driven therefrom. Notched pulleys mounted on each shaft and a double sided belt connects the pulleys to maintain the slitter teeth and respective wheels in registration during rotation. A phase shifting device is further provided to allow for initial alignment of the slitter teeth relative to the pulleys.
摘要翻译： 用于切割用于制造热交换器的翅片的色带库存的方法和装置。 一对分切轮被安装成与单独的轴共同作用。 其中一个轴由马达驱动，另一个轴由其驱动。 安装在每个轴上的缺口皮带轮和双面皮带连接滑轮，以保持分切齿和相应的轮在旋转期间对准。 还提供一种相移装置，以允许分切齿相对于滑轮的初始对准。
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