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Full welding technology of steel plate hot rolling pulley

A welding process and pulley technology, which is applied in the field of complete welding of steel plate hot-rolled pulleys, can solve problems such as stress concentration, pulley fatigue failure, and expansion, and achieve the effect of eliminating stress concentration points and improving pulley load-bearing and service life.

Inactive Publication Date: 2015-10-14
刘娜
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the incomplete welding of the above welding method, there are gaps in the joints, and long-term use is likely to cause stress concentration, which will gradually expand the existing gaps until obvious cracks are visible to the naked eye, resulting in fatigue failure of the pulley

Method used

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  • Full welding technology of steel plate hot rolling pulley
  • Full welding technology of steel plate hot rolling pulley
  • Full welding technology of steel plate hot rolling pulley

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Embodiment Construction

[0022] Such as Figure 4-9 as shown, Figure 4 The present invention proposes a structural schematic diagram of a steel plate hot-rolled pulley after complete welding process welding; Figure 5 A schematic diagram of the processing of the spokes in the complete welding process S1 of a steel plate hot-rolled pulley is proposed for the present invention; Image 6 A schematic diagram of the welding structure at the chamfer A in the complete welding process S2 of a steel plate hot-rolled pulley proposed for the present invention; Figure 7 The present invention proposes a structural schematic diagram of the cleaning chamfer B in the complete welding process S3 of a steel plate hot-rolled pulley; Figure 8 A schematic diagram of the welding structure at the chamfer B in the complete welding process S4 of a steel plate hot-rolled pulley proposed for the present invention; Figure 9 A schematic diagram of the welding structure of another embodiment of the complete welder for a ste...

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Abstract

The invention discloses a full welding technology of a steel plate hot rolling pulley. The technology includes the following steps that S1, the two sides of the joint of a spoke and a shaft sleeve are chamfered to form a chamfer A and a chamfer B, the chamfer A ranges from 40 degrees to 60 degrees, the distance between the chamfer A and the chamfer B is a, and a is smaller than or equal to 1mm; S2, the chamfer A is welded, and according to welding technology parameters, the diameter phi of a welding wire is 1.6, current ranges from 350A to 370A, voltage ranges from 36V to 38V, welding speed is 20-23cmm / min and protection gas is CO2; S3, welding leakage generated by welding the chamfer A is cleaned at the chamfer B through a lathe, and the chamfer A is machined; S4, the chamfer A is welded, according to the welding technology parameters, the diameter phi of a welding wire is 1.6, current ranges from 350A to 370A, voltage ranges from 36V to 38V, welding speed is 20-23cmm / min and protection gas is CO2, and welding is finished. By means of the method, the shaft sleeve and the spoke are completely welded and fused together, no seam exists, stress concentration points are eliminated, load-bearing capacity of the pulley is greatly improved, and the service life of the pulley is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of pulley production, in particular to a complete welding process of a steel plate hot-rolled pulley. Background technique [0002] The pulley is an indispensable part of the lifting mechanism. Its quality stability has a great influence on the service life of the entire lifting mechanism. In the traditional manufacturing process of the steel plate hot-rolled pulley, the welding of the wheel web and the bushing is incomplete. Welding as Figure 1-3 as shown, figure 1 Before welding, there is a matching gap at the welding place, figure 2 , image 3 After bit welding, due to welding penetration, the fit gap cannot be completely eliminated, such as figure 2 Shown; long-term use, the gap gradually expands until it is visible to the naked eye, such as figure 2 shown. [0003] Due to the incomplete welding of the above-mentioned welding method, there are gaps in the joints, and long-term use is likely to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 刘子瑜刘子恺刘达
Owner 刘娜
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