Off-line positioning and welding method of annular furnace anchoring element
A positioning welding and anchoring technology, which is applied in lining repair and other directions, and can solve problems such as setting out, installation, and welding difficulties
Active Publication Date: 2011-08-10
MCC5 GROUP SHANGHAI CORPORATION LIMITED
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Problems solved by technology
[0003] In order to overcome the defects of the prior art, solve the problem of difficulty in setting out, installing and welding the anchors after the furnace shell plate of the annular furnace is installed, and provide a construction method with convenient operation and high welding quality, the invention discloses an annular furnace shell plate. Offline Positioning Welding Method for Furnace Anchor
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Embodiment 1
[0018] A high-temperature annular annealing furnace has a center diameter of 46.4m, a wall height of 4000mm, and a roof width of 6350mm. There are 177 wall and roof panels in the annular furnace, and 21,594 anchors on the furnace shell.
[0019] The operation steps include the seven steps of determining the setting-out benchmark of the anchor, setting out, determining the positioning point of the anchor, spot welding the anchor, welding the root of the anchor, reviewing and welding the furnace shell,
[0020] (1) Determining the setting-out benchmark of anchors: including determining the setting-out benchmarks of anchors on the furnace shell panel 1 and determining the setting-out benchmarks of anchors on the top plate 2 of the furnace shell, such as figure 1 As shown, when determining the setting-out benchmark of the anchor on the furnace shell wall plate 1, the furnace shell plate wall plate 1 is placed flat on the ground, and the center connection line 14 between the upper b...
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The invention relates to the field of construction of cold rolling industrial furnaces, in particular to an off-line positioning and welding method of an annular furnace anchoring element which comprises the following seven steps: determining the line releasing reference of the anchoring element, releasing lines, determining the positioning point of the anchoring element, spot-welding the anchoring element, welding around the root of the anchoring element, rechecking, and installing a furnace shell plate. The invention is characterized in that the central connection line (14) of an upper combustion nozzle (11) and a lower combustion nozzle (12) is used as a reference line in the vertical direction of the wall plate (1) of the furnace shell plate; a bottom side line (15) is used as a reference line in the horizontal direction of the wall plate (1) of the furnace shell plate; the central connection line (24) of an outside installing hole (21) and an inside installing hole (22) is used as a reference line in the radial direction of the top plate (2) of the furnace shell plate; and an internal side line (25) is used as a reference line in the circumferential direction of the top plate(2) of the furnace shell plate. By effectively controlling the off-line positioning accuracy of the anchoring element and the installation accuracy of the furnace shell plate, the invention improves the efficiency of construction.
Description
technical field [0001] The invention relates to the construction field of cold-rolling industrial furnaces, in particular to an off-line positioning welding method for annular furnace anchors. Background technique [0002] Annular furnace is a common equipment in the smelting industry. Generally, the individual furnace shell plates are installed and connected to form an annular furnace shell, and then anchors are welded on the furnace shell. The anchors are distributed on the furnace wall and furnace roof. For the welding method of anchors, the commonly used construction method is to wire and weld after the furnace shell is completely installed, so that the wire is more accurate. But the disadvantages are: it is difficult to set up wires, install and weld anchors in the round and high furnace body, especially the welding of furnace top anchors is upward welding, which makes it difficult for welders to operate, the quality of welds is not easy to guarantee, and the welding ef...
Claims
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IPC IPC(8): F27D1/16
Inventor 陈广忠陈红武王祥
Owner MCC5 GROUP SHANGHAI CORPORATION LIMITED