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Multi-layer film of tool ring of tunnel boring machine and preparation method thereof

A technology of tunnel boring machine and multi-layer film, which is applied in tunnels, coatings, mining equipment, etc. It can solve the problems of wear resistance, thermal strength and high temperature oxidation resistance, etc., so as to improve oxidation resistance and wear resistance performance, easy operation, and low cost

Inactive Publication Date: 2016-09-28
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the binary film is used in severe friction or high temperature environment, its wear resistance, thermal strength and high temperature oxidation resistance are not ideal.

Method used

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  • Multi-layer film of tool ring of tunnel boring machine and preparation method thereof
  • Multi-layer film of tool ring of tunnel boring machine and preparation method thereof
  • Multi-layer film of tool ring of tunnel boring machine and preparation method thereof

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Embodiment Construction

[0023] The present invention is described in further detail below in conjunction with accompanying drawing:

[0024] refer to figure 1 , the multi-layer thin film used in the tunnel boring machine tool ring according to the present invention comprises a metal Cr bottom layer, an oxidation-resistant film layer and a wear-resistant and friction-reducing layer deposited on the surface of the tunnel boring machine tool ring in sequence.

[0025] It should be noted that the oxidation-resistant thin film layer is composed of Cr elements, Al elements and N elements; the wear-resistant and friction-reducing layer is composed of Cr elements, Ti elements, Al elements, Si elements, C elements and N elements; The thickness of the film is 100nm, the thickness of the oxidation-resistant thin film layer is 200nm, and the thickness of the wear-resistant and friction-reducing layer is 4μm.

[0026] The preparation method of the multi-layer film for tunnel boring machine cutter ring of the pre...

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Abstract

The invention discloses a multi-layer film of a tool ring of a tunnel boring machine and a preparation method thereof. The multi-layer film comprises a metal Cr bottom layer, an oxidation resisting film layer and an abrasion resisting and friction reducing layer which are sequentially deposited on the surface of the tool ring of the tunnel boring machine. The multi-layer film can be used for the tool ring of the tunnel boring machine, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of cutters, and relates to a multilayer film of a tunnel boring machine cutter ring and a preparation method thereof. Background technique [0002] Tunnel boring machine (TBM) is a large-scale mechanical equipment for full-section construction of underground rocky tunnels (holes), mainly used for full-section construction of water conservancy and hydropower tunnels, railway and road traffic tunnels, coal mine roadways and urban underground railways. When the TBM excavates the tunnel, the rock breaking is realized by the cutter on the cutter head. Its main components are cutter body, cutter ring, cutter ring snap ring, seal, bearing, mandrel and end cover, etc. During construction, the tool and the rock wear and squeeze each other during the excavation process, causing wear, heat and deformation of the tool, and the heating of the tool will reduce its hardness, thereby accelerating wear. It is time-consuming and labor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10C23C14/32C23C14/16C23C14/02
CPCC23C14/025C23C14/16C23C14/325E21D9/10
Inventor 郭岩李太江李巍吕品正
Owner XIAN THERMAL POWER RES INST CO LTD