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Pitting Corrosion and Peeling Repair Technology of Rotary Kiln Tire and Support Roller

A rotary kiln and tire technology, applied in the pitting and spalling repair process of idler rollers, and the field of rotary kiln tires, can solve the problems of easy cold and hot cracks, insufficient tensile strength, improper process measures, etc., and achieve the restoration of size and cost. low cost and easy operation

Active Publication Date: 2011-12-28
WUHAN KAIMING HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current welding materials and process welding technology cannot solve the problem. The main disadvantages are: it is difficult to achieve metallurgical combination with the collective material during welding, it is easy to produce cold and hot cracks, improper process measures, insufficient tensile strength, etc., and it is easy to drop blocks and break.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0014] 1) Cut the pitting and peeling parts of the rotary kiln tire belt and the idler roller base, and expand 20-30mm to the depth of the cutting part, and 20mm to the periphery of the cutting part;

[0015] 2) Use an angle grinder to grind and cut the residual part of the high-melting ferric oxide slag. Be careful to clean it up completely. In addition, do not use carbon arc gouging to cut, which will damage the carbon rod. 99.99% of the carbon in it penetrates into the metal material to be cut during cutting, forming carbon spots with extremely poor weldability, which will bring difficulties in welding with extremely poor deposition performance. It must not be used, and oxygen + acetylene is preferred. Gas cutting method;

[0016] 3) The pearlite material and the acid welding wire are deposited together to form a bonding layer on the inner wall and bottom of the cutting part, and brush off the drug skin and oxidized slag; the bonding layer composition (mass percentage):

...

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Abstract

The invention discloses a process for repairing pitting and spalling of a tyre and a carrier roller of a rotary kiln. The process comprises the following steps of: cutting the pitting and spalling positions of the tyre and the carrier roller matrixes of the rotary kiln, performing expansion and polishing and orderly cladding a joint layer and a transition layer, and then performing grinding and polishing. The process for repairing pitting and spalling of the tyre and the carrier roller of the rotary kiln provided in the invention is low in investment, simple and convenient in technique, convenient to operate, easy to learn, easy to master, novel in technology, low in cost, and cogent and reliable; the process makes an enormous contribution to not only increase income and reduce expenditure for the state, but also reduce consumption, save energy and improve efficiency for enterprises.

Description

technical field [0001] The invention relates to a pitting and peeling repair process for tire belts and supporting rollers of a rotary kiln. Background technique [0002] At present, there is no repair method for pitting and peeling of tires and idlers. Domestic and foreign scientific research units and maintenance units use stainless steel materials for welding, and some use carbon steel electrodes for welding. They all peel off and break under the condition of heavy-duty operation, and there is no way to solve it. They can only be replaced. The current welding materials and welding technology cannot solve the problem. The main disadvantages are: it is difficult to achieve metallurgical combination with the collective material during welding, it is easy to produce cold and hot cracks, improper process measures, insufficient tensile strength, etc., and it is easy to drop blocks and break. Contents of the invention [0003] The primary purpose of the present invention is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
Inventor 张开明林全意
Owner WUHAN KAIMING HIGH TECH
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