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Method for repairing converter supporting ring

A converter support ring and repair method technology, which is applied in the field of steelmaking converter maintenance, can solve the problems such as cracking of the welding seam of the fan-shaped section of the support ring, burning loss and deformation, etc., so as to solve the problem of water leakage at the trunnion end, save the cost of spare parts, and ensure the axial direction. The effect of size

Inactive Publication Date: 2015-03-25
甘肃酒钢集团西部重工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by high temperature, heavy load, thermal alternating stress and the corrosion of steel slag and molten steel overflowing from the furnace shell, after a certain period of use, the sector of the support ring will have weld cracking, severe local burning and deformation, and other equipment hidden dangers that affect safe production. Complete replacement of the support ring

Method used

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Effect test

Embodiment Construction

[0037] A method for repairing a converter support ring, comprising the following steps:

[0038] (1) Disassemble the old converter support ring, and obtain the drive side trunnion and non-drive side trunnion components:

[0039] First, take the center line of the trunnion as the reference, and draw a cutting line 50mm away from one side of the trunnion block to determine the disintegration position of the segment of the old converter support ring, and disassemble the two segments by gas cutting under the premise of protecting the two trunnion blocks from damage ; Then confirm the bearing disassembly method-clean and check the two bearings on the trunnion. If it needs to be replaced, it can be removed by gas cutting under the premise of ensuring that the trunnion is not damaged; if the bearing can continue to be used, carry out packaging protection; Converter support ring segment and bearing; finally, use a trolley to transport the two trunnion assemblies from the user site to ...

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Abstract

The invention relates to a method for repairing a converter supporting ring. The method comprises the following steps that (1) an old converter supporting ring is disassembled, and a transmission side trunnion and a non-transmission side trunnion assembly are obtained; (2) a tangential key on the transmission side trunnion is removed; (3) a large gear on the transmission side trunnion is dismounted; (4) new supporting ring fan-shaped sections are designed and made optimally; (5) two trunnion assemblies are repaired and the ends of the trunnion are sealed; (6) the two trunnion assemblies and the two fan-shaped sections are assembled on site; (7) the two trunnion assemblies and the two fan-shaped sections are welded and annealed on site. The method is used for repairing the converter supporting ring, greatly shortens the manufacturing period of the supporting ring, guarantees repairing quality and saves a great number of spare part expenses for enterprises.

Description

technical field [0001] The invention relates to the technical field of steelmaking converter maintenance, in particular to a repair method for a converter support ring. Background technique [0002] The supporting ring is an important part of the supporting device and tilting device of the steelmaking converter. The supporting ring is the bearing part of the converter and is a box-shaped structural part. Affected by high temperature, heavy load, thermal alternating stress and the corrosion of steel slag and molten steel overflowing from the furnace shell, after a certain period of use, the sector of the support ring will have weld cracking, severe local burning and deformation, and other equipment hidden dangers that affect safe production. Replace the ring as a whole. However, since the two trunnion components (trunnion and trunnion block) are intact and of high value, the replaced support ring should be considered for reuse. Contents of the invention [0003] The techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 张旺盛
Owner 甘肃酒钢集团西部重工股份有限公司
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