Welding method for controlling bending deformation of DMCL welding machine shell
A welding method and bending deformation technology, applied in welding equipment, welding accessories, manufacturing tools, etc., can solve the problems of bending deformation of DMCL welding casing, machining allowance beyond the flange plane of the middle split surface, etc., and achieve the goal of preventing component deformation Effect
Active Publication Date: 2021-12-07
SHENYANG TURBO MASCH CORP
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Problems solved by technology
Due to the cumulative effect of the lateral shrinkage of each girth weld, it is easy to cause serious bending deformation of the DMCL welded casing, and the deformation can often reach about 15mm, which seriously exceeds the plane machining allowance of the mid-section flange.
Method used
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Embodiment Construction
[0033] see figure 1 , the DMCL welded casing includes a mid-section flange 1, a thrust seal body 2 and a support seal body 3 welded to the left and right ends of the mid-section flange 1, and the thrust seals at the left and right ends of the mid-section flange 1 are welded respectively The first end plate 4 and the second end plate 5 on the body 2 and the supporting sealing body 3 are welded to the first middle end plate 6 and the second middle end plate 7 in the middle of the split plane flange 1, welded to the first end plate 4 and the first middle end plate 6 and the first shell plate 8 whose two bottom ends are longitudinally welded to the mid-section flange 1 is welded between the second end plate 5 and the second middle end plate 7 and whose two bottom ends The third shell plate 9 welded longitudinally with the mid-section flange 1, the second shell welded between the first middle end plate 6 and the second middle end plate 7 and the two bottom ends longitudinally welde...
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The invention provides a welding method for controlling bending deformation of a DMCL welding machine shell. The welding method comprises the steps that firstly, a thrust sealing body and a supporting sealing body are spliced and welded to a split flange; a first end plate, a first middle end plate and a first shell plate are spliced and welded to form a first middle end plate assembly, and a second end plate, a second middle end plate and a third shell plate are spliced and welded to form a second middle end plate assembly; then the first middle end plate assembly, the second middle end plate assembly and a second outer shell plate are spliced and welded to a split flange assembly to form a welded DMCL welding shell assembly; and finally, after the welded DMCL welding shell assembly is subjected to stress relief treatment, supporting rings and flow guide plates in the DMCL welding shell assembly are spliced and welded to form the DMCL welding machine shell. According to the welding method for controlling bending deformation of the DMCL welding machine shell, the bending deformation amount of the split flange in the DMCL welding machine shell can be controlled.
Description
technical field [0001] The invention relates to the technical field of DMCL welding casing processing, in particular to a welding method for controlling bending deformation of a DMCL welding casing. Background technique [0002] DMCL centrifugal compressor is a low-pressure cylinder compressor that constitutes a cracking gas compressor unit, and its stator casing adopts a symmetrical welded structure. see figure 1 , the DMCL welded casing is mainly composed of a mid-section flange 1, a thrust seal body 2 located at the left and right ends of the mid-section flange 1 and a support seal body 3, and a first end plate 4 located at the left and right ends of the mid-section flange 1 And the second end plate 5, the first intermediate end plate 6 and the second intermediate end plate 7 located in the middle of the split flange 1, the first shell plate located between the first end plate 4 and the first intermediate end plate 6 8. The third shell plate 9 between the second end pla...
Claims
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IPC IPC(8): B23K31/00B23K31/02B23K33/00B23K9/32B23K9/173
CPCB23K31/003B23K31/02B23K33/00B23K9/32B23K9/173
Inventor 郝建国舒鑫刘振邦甄必德郭鹏王红梁盈牛权张江楠
Owner SHENYANG TURBO MASCH CORP