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A method for repairing screw machine blades of a shield machine

A repair method and screw machine technology, which is applied in the field of shield machine repair, can solve problems such as the wear resistance of difficult blades, and achieve the effect of improving wear resistance, high wear resistance, and ensuring wear resistance

Active Publication Date: 2022-03-25
BCEG CIVIL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing repair methods are difficult to ensure the wear resistance of the blades

Method used

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  • A method for repairing screw machine blades of a shield machine

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] Such as figure 1 As shown, the method for repairing the screw blade of the shield machine provided by the embodiment of the present invention includes the steps:

[0032] S11) select the blade to be repaired according to the external wear of the blade:

[0033] It will be understood that external wear refers to the wear exhibited by the outer surface of the blade. Specifically, carry out inspection on the blade, observe the external wear...

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Abstract

The invention discloses a method for repairing a screw blade of a shield machine, which comprises the steps of: 1) performing an inspection on the blade, and selecting the blade to be repaired according to the external wear of the blade; 2) removing the attachments on the surface of the blade to be repaired; 3) Find and mark the internal wear of the blade to be repaired; 4) Clean up the worn part of the blade to be repaired and polish the welded part, the worn part includes external wear and internal wear; 5) Preheat the welded part to the set temperature; 6 ) Use wear-resistant materials for welding at the welding part, and the wear-resistant materials are Fe90, Ste6 or Ni60; 7) Inspect the weld after welding, if the weld is unqualified, remove the weld and return to step 4), if the weld is qualified, then End repair. The above repair method uses Fe90, Ste6 or Ni60 as the wear-resistant material for welding, which effectively ensures the wear resistance of the repaired blade wear-resistant layer and also improves the wear resistance of the blade wear-resistant layer.

Description

technical field [0001] The invention relates to the technical field of shield machine repair, and more specifically, relates to a repair method for a screw blade of a shield machine. Background technique [0002] A shield machine is a tunnel boring machine that uses the shield method and is mainly used for tunnel construction. The construction conditions of the shield machine are generally harsh, and the screw machine is used to transport mud, sand and earth, so the wear of the screw machine is inevitable, especially the blades of the screw machine. [0003] When the blade is worn, it will directly affect the conveying of the screw machine, and the blade with more serious wear cannot be used. therefore. Worn blades need to be repaired before starting work. However, the existing repair methods are difficult to ensure the wear resistance of the blade. [0004] Based on the above, how to repair the blade to ensure the wear resistance of the blade is a problem to be solved u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 马云新李森梁宇赵洪岩汪勇李松林范家勐魏勇王浩丁海林叶海来
Owner BCEG CIVIL ENG
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