CN1033372C - 丁字接头的焊接坡口 - Google Patents

丁字接头的焊接坡口 Download PDF

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CN1033372C
CN1033372C CN86101438A CN86101438A CN1033372C CN 1033372 C CN1033372 C CN 1033372C CN 86101438 A CN86101438 A CN 86101438A CN 86101438 A CN86101438 A CN 86101438A CN 1033372 C CN1033372 C CN 1033372C
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rib
groove
welding
section
joint
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CN86101438A
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CN86101438A (zh
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南渚夫
冈保
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K33/00Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/16Joints and connections with adjunctive protector, broken parts retainer, repair, assembly or disassembly feature
    • Y10T403/1616Position or guide means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/47Molded joint
    • Y10T403/473Socket or open cup for bonding material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

一种带有厚度变化肋下板的工件的丁字接头焊接坡口,其特征在于,对应厚肋段,该段的坡口使得上板部分地与该肋段搭接,并在对应厚肋段坡口的一部分上开有用于检测搭接情况的检测孔;对应薄肋段,该段的坡口使得上板与肋之间具有大约0.5mm的间隙。

Description

丁字接头的焊接坡口
本发明涉及带有厚度变化的肋板的工件的丁字接头的焊接坡口〔槽〕,例如压缩机中的叶轮焊接组件的接头的焊接坡口。
图1中所示的丁字接头的焊接坡口被认为适用于压缩机中的叶轮焊接组件。但是,当下板1的肋2的厚度沿图1中的长度方向(与图纸面成直角方向)变化时,尤其是肋的厚度从大约2mm的超薄厚度变化到8-10mm厚时,仅靠相对于焊接坡口改变焊接条件难以焊透肋2和上板3的坡口4和使根部焊道具有一定的均匀性,其中焊接坡口使得上板3与肋2搭接的尺寸相对于肋2的厚度变化是固定的。
如上所述,当肋2的板厚从大约2mm的超薄厚度变化到8-10mm厚时,在具有固定搭接尺寸的焊接坡口处改变焊接条件不能在超薄厚度部位获得坚固和均匀的根部焊道,既使在焊接中采用小电流也是如此,因为热量聚集在肋2一侧,并且由于肋2一侧的传热量小而使熔深增大。
此外,在丁字接头中,需要把上板3叠放在肋2的上表面上,以便确定间隙尺寸。在这种情况下,当把坡口4叠放在肋2的全部表面上时,无法确定坡口4和肋2的左侧和右侧以及前面和后面的位置。另外,当上板3和肋板不在正确的位置时,因形成大的根部焊道或根部焊道不够深而不能获得均匀的焊道。
本发明的一个目的是提供一种能够克服上述缺点,获得均匀的根部焊道的丁字接头的焊接坡口。
为此目的,根据本发明提供了一种带有厚度变化肋下板的工件的丁字接头焊接坡口,其特征在于,对应厚肋段,该段的坡口使得上板部分地与该肋段搭接,并在对应厚肋段坡口的一部分上开有用于检测搭接情况的检测孔;对应薄肋段,该段的坡口使得上板与肋之间具有大约0.5mm的间隙。
本发明的技术措施是:
(1)通过加工坡口的尺寸,使坡口与肋的厚段搭接(例如搭接0.5mm),可使支承上板的下板和上板之间保持一固定尺寸的距离。
(2)通过加工坡口的尺寸,在肋的薄段使肋和坡口之间有一间隙(例如0.5mm的间隙。间隙数值相当重要,因为过大和过小的间隙都会影响焊接质量。),可用不致熔掉的小电流在肋的薄段焊出均匀的根部焊接。
(3)通过在对应于肋的厚段的一部位的坡口边缘上开出的一检测孔,可随时从肋和坡口的局部间隙检测随坡口与肋的位置情况。这一检测孔在肋和坡口被加工成弯曲形时和点焊时很有作用,特别是在工件板厚部分很长时、坡口为曲线形时,以及在部件的中心部分的坡口,从横向侧面难以观察的情况下。
因此,根据本发明可获得如下效果:
(1)上板可被支承在一固定的距离处,因为在肋的厚段,坡口与该肋搭接。
(2)本发明中,在肋的薄段,肋和坡口之间存在一间隙,即使用非常小的电流进行焊接,焊接金属也不会熔掉,从而能够获得均匀的根部焊道。
(3)可以正确调整肋上的上板的坡口部分,因为在对应于肋厚段的坡口上开有检测孔。
参照下文的详细描述和附图将更加明确本发明的目的、特征和优点。
附图的简要说明:
图1是现有技术的坡口的剖视图;
图2是根据本发明的一实施例的坡口部分的透视图;
图3是沿图2中的A-A′线的剖视图;
图4是沿图2中的B-B′线的剖视图;
图5是沿图2中的C-C′线的剖视图;
图6和图7是分别表示根据本发明和现有技术的坡口的焊接情况的剖视图。
在图2至图5中,参考数1表示下板,参考数2表示该下板1的肋2。该肋2的厚度沿其长度方向变化。参考数3表示置于肋2上的上板。如图3至图5中所示,在所述上板3上加工出的坡口4使得上板的一部分在肋2的厚段与该段的坡口(B-B′)处与肋搭接(见图4),并使得上板在肋的薄段与该段的坡口(A-A′)处与肋之间存在一间隙(见图3),在C-C′)段,对应于肋的厚段的坡口上开有一检测搭接情况的检测孔7(见图5)。当焊接这种坡口以构成一丁字接头时,形成如图2的左半部所示的焊接金属5和根部焊道6。
以下将就本实施例描述这种坡口的焊接结果。
对在肋2的薄端的左右两侧具有2mm的窄间隙、肋2中央部分的厚度为8mm、肋高为8mm、肋距为50mm的丁字接头用铬—钼钢作为下板1进行钨极惰性气体保护(TIG)焊接。对这种接头坡口和对传统坡口用钨极惰性气体保护焊接以后的情况对照如图6和图7中所示。
结果是,对搭接宽度在整个表面上均为0.5mm的传统坡口4,虽然肋2的薄段端部经受了100A焊接电流的钨极惰性气体保护焊接,但如图7中的箭头所示,焊接金属5的根部焊道6还是熔掉即缩短了。但是在本发明中,在对应于左右侧有0.5mm间隙的肋2的薄段尖端的坡口4处,用上述的同样方法在90A的焊接电流下焊接,可以获得如图6中的箭头所示的均匀的根部焊道6。此外,在现有技术和本发明中的肋的厚段,在坡口与肋搭接0.5mm的情况下(见图4中的截面),在150A的焊接电流下,二者均可获得良好的根部焊道。
在根据本发明的坡口中,在大致对应于肋2中央的厚段的坡口部位开有一直径为9mm的检测孔7,在肋2的左右侧和带有检测孔7的坡口之间形成径向为0.5mm的间隙,从而能够从上板精确地调整肋和坡口,因为能从坡口的上表面正确地检测左侧和右侧的肋的位置。

Claims (1)

  1. 一种带有厚度变化肋下板的工件的丁字接头焊接坡口,其特征在于,对应厚肋段,该段的坡口使得上板部分地与该肋段搭接,并在对应厚肋段坡口的一部分上开有用于检测搭接情况的检测孔;对应薄肋段,该段的坡口使得上板与肋之间具有大约0.5mm的间隙。
CN86101438A 1985-09-03 1986-03-07 丁字接头的焊接坡口 Expired - Lifetime CN1033372C (zh)

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JP1985134768U JPH0320059Y2 (zh) 1985-09-03 1985-09-03
JP134768/85 1985-09-03

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CN86101438A CN86101438A (zh) 1987-09-16
CN1033372C true CN1033372C (zh) 1996-11-27

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US (1) US4813806A (zh)
JP (1) JPH0320059Y2 (zh)
CN (1) CN1033372C (zh)
DE (1) DE3606676A1 (zh)
FR (1) FR2586600B1 (zh)
IT (1) IT1190236B (zh)

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US4903888A (en) * 1988-05-05 1990-02-27 Westinghouse Electric Corp. Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up
US4940390A (en) * 1988-05-05 1990-07-10 Westinghouse Electric Corp. Turbine system having more failure resistant rotors and repair welding of low alloy ferrous turbine components by controlled weld build-up
ES2129086T3 (es) * 1994-01-29 1999-06-01 Asea Brown Boveri Procedimiento para unir piezas metalicas por medio de soldadura por fusion con arco voltaico.
US8733619B2 (en) 2010-06-25 2014-05-27 Arcelormittal Investigacion Y Desarrollo, S.L. Nickel-base radiant tube and method for making the same
FR2992880B1 (fr) * 2012-07-06 2015-02-13 Snecma Piece pour soudage par friction
JP6681941B2 (ja) * 2018-05-31 2020-04-15 株式会社Uacj 衝撃吸収部材

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IT1091876B (it) * 1978-01-12 1985-07-06 Nuovo Pignone Spa Metodo per la saldatura elettrica ad arco delle pale al disco o al controdisco di giranti pe macchine rotative
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GB8318589D0 (en) * 1983-07-08 1983-08-10 Blair George Plc Welded constructions and components

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US4813806A (en) 1989-03-21
JPH0320059Y2 (zh) 1991-04-30
FR2586600A1 (fr) 1987-03-06
DE3606676C2 (zh) 1988-02-04
IT8647750A0 (it) 1986-03-11
JPS6246191U (zh) 1987-03-20
CN86101438A (zh) 1987-09-16
DE3606676A1 (de) 1987-03-05
FR2586600B1 (fr) 1989-01-06
IT1190236B (it) 1988-02-16

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