Flame shaping method for vertical bending deformation of transformer core clamping piece
A technology of iron core clips and transformers, applied in the field of flame shaping, can solve problems such as time-consuming, labor-intensive, and poor correction effects, and achieve the effect of simple and easy method, good shaping effect, and solution to vertical bending deformation
Inactive Publication Date: 2009-11-04
BAODING TIANWEI GRP CO LTD
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Problems solved by technology
At present, the method of correcting deformation after welding is mainly to use mechanical methods to correct deformation, and the correction effect is not good, and it is time-consuming and labor-intensive.
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[0011] When the spliced transformer core clips have vertical bending deformation (see Figure 1-2 ), the web 3 of the spliced iron core clamp adopts the heating method of the triangular heating zone, that is, a row of triangular heating zones 1 at the upper arch of the web 3 is flame-heated, and the apex of the triangular heating zone 1 Downward, the apex height of the triangular heating zone 1 is less than or equal to half of the height of the web 3; concentrated heating to 700-800°C, that is, the heated area of the web 3 is dark red.
[0012] If heating once fails to meet the shaping requirements, repeat heating is performed, and the repeated heating part is staggered from the previous heating part.
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The invention relates to a flame shaping method for a vertical bending deformation of a transformer core clamping piece, which is applicable to the deformation of the transformer core clamping piece after welding. A heating method of triangular heating zone is used on a web of a splicing core clamping piece, namely to frame-heat a row of triangular heating zones at the upwarp of the web; the vertexes of the triangular heating zones are downward; the height of the vertex of the triangular heating zones is smaller than or equal to half height of the web; and the triangular heating zones are intensively heated to 700-800 DEG C, namely that the heated zones of the web are dull red. If the shaping requirements can not be satisfied by heating once, repetitive heating is to be carried out, and the repetitive heating areas are staggered from the former areas. The invention has the beneficial effects of better solving the problem of vertical bending deformation of the transformer core clamping piece and having good shaping effect; and the method is simple and easy.
Description
technical field [0001] The invention relates to a flame shaping method for vertical bending deformation of a transformer iron core clip, which is suitable for the deformation occurring after the transformer iron core clip is welded. Background technique [0002] The deformations after welding of the transformer core clamps are mainly vertical bending deformation, side bending deformation and vertical bending deformation, and sometimes several deformations appear at the same time. In welding production, although some necessary measures are taken to control and reduce welding stress and deformation, there will always be some stress and deformation in the structure, and post-welding correction of deformation is part of clamp production. At present, the method of correcting deformation after welding is mainly to use mechanical methods to correct deformation, and the correction effect is not good, and it is time-consuming and labor-intensive. Contents of the invention [0003]...
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IPC IPC(8): C21D7/13C21D1/52
Inventor 张海燕于敬方王冠澎康运和
Owner BAODING TIANWEI GRP CO LTD
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