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Shield machine cutter ring material

A technology of shield machine and cutter ring, which is applied in the field of shield machine cutter ring material to achieve the effect of good wear resistance and toughness

Inactive Publication Date: 2018-08-10
HUBEI CHUANYE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing shield machine cutter ring materials cannot meet the requirements of high hardness and good wear resistance and toughness at high temperatures, resulting in the need to frequently replace the cutter ring

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The composition of the shield machine cutter ring material includes: C 0.48%; Si 0.80%; Mn 0.20%; Cr5.0%; Mo 1.50%; V1.0%; Ni0.12%; Re0.15%; P 0.01 %; S 0.005%; other components are Fe. The shield machine cutter ring made of the above materials needs to be cleaned after heat treatment, and then its end face and inner circle are ground to meet the requirements of the size and smoothness of the shield machine cutter ring. These shield machine cutter rings need to be re- After flaw detection, hardness and impact resistance testing, the HRC is 58-59, and the impact value is a k 10J / cm 2 Those are finished products. The shield machine cutter ring prepared by the above materials has a hardness of HRC: 58 and an impact toughness value of 12 J / cm 2 , At high temperature, the wear resistance and toughness are extremely good.

Embodiment 2

[0062] The composition of the shield machine cutter ring material includes: C 0.45%; Si 0.80%; Mn 0.20%; Cr 4.90%; Mo 1.30%; V 0.9%; Ni 0.10%; %; Other components are Fe. The shield machine cutter ring made of the above materials needs to be cleaned after heat treatment, and then its end face and inner circle are ground to meet the requirements of the size and smoothness of the shield machine cutter ring. These shield machine cutter rings need to be re- After flaw detection, hardness and impact resistance testing, the HRC is 58-59, and the impact value is a k 10J / cm 2 Those are finished products. The shield machine cutter ring prepared by the above materials has a hardness of HRC: 59 and an impact toughness value of 15 J / cm 2 , At high temperature, the wear resistance and toughness are extremely good.

Embodiment 3

[0064] The composition of the shield machine cutter ring material includes: C 0.50%; Si1.20%; Mn 0.40%; Cr5.50%; Mo 1.50%; V1.2%; Ni 0.20%; Re 0.15%; P 0.01% ; S 0.005%; other components are Fe. The shield machine cutter ring made of the above materials needs to be cleaned after heat treatment, and then its end face and inner circle are ground to meet the requirements of the size and smoothness of the shield machine cutter ring. These shield machine cutter rings need to be re- After flaw detection, hardness and impact resistance testing, the HRC is 58-59, and the impact value is a k 10J / cm 2 Those are finished products. The shield machine cutter ring prepared by the above materials has a hardness of HRC: 59 and an impact toughness value of 14 J / cm 2 , At high temperature, the wear resistance and toughness are extremely good.

[0065] The composition of the shield machine cutter ring material provided by the present invention includes: C 0.45-0.50%; Si 0.80-1.20%; Mn 0.20-0...

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Abstract

The invention relates to a shield machine cutter ring material, which comprises 0.45-0.50% of C, 0.80-1.20% of Si, 0.20-0.40% of Mn, 4.90-5.50% of Cr, 1.30-1.50% of Mo, 0.9-1.2% of V, 0.10-0.20% of Ni, 0.15% of Re, 0-0.01% of P, 0-0.005% of S, and the balance of Fe. According to the present invention, the shield machine cutter ring material can achieve the hardness HRC of 58-59, and has good wearresistance and good toughness at high temperatures.

Description

technical field [0001] The invention relates to a shield machine cutter ring material, which belongs to the field of material processing of mechanical equipment. Background technique [0002] The working principle of the shield machine is that the disc-shaped hob installed on the cutter head of the shield machine is pressed against the rock surface under the strong reasoning of the shield machine. With the rotation of the cutter head, the disc-shaped hob rotates around The central axis of the cutter head revolves and rotates around its own axis at the same time. Under the thrust and torque of the cutter head, the hob cuts a series of concentric grooves on the rock surface. When the thrust exceeds the strength of the rock, the rock under the hob blade will Break directly, the blade inserts into the rock, forming a crushing zone and radioactive cracks, further pressurization, when the distance between the hobs meets a certain condition, the cracks in the adjacent hobs extend a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/46
CPCC22C38/02C22C38/005C22C38/04C22C38/44C22C38/46
Inventor 万春燕唐建军
Owner HUBEI CHUANYE TECH CO LTD