High-hardness Wear Resistant Welding Wires for Shield Cutter
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Performance Analysis |
Cutter head of shield tunneling machine is divided into two layout forms as soft soil and hard rock according to different geological conditions. The cutter head layout of soft soil is serrated knife as basic, edge hob and scraper as auxiliary. Cutter head layer of hard rock is hob as basic and scraper as auxiliary. Cutter is an initial part of shield tunneling machine, reasonable selection, application, maintenance and replacement directly determines the quality, progress and cost of shield tunneling project. Damage forms of shield cutter mainly are furrow type abrasive wear, rolling wear, collapse and impact failure. It is necessary to use wear resistant spray wires to strengthen the wearable parts of shield cutter.
Introduction of Welding Wires |
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Product Grade |
Diameter (mm) |
Hardness (HRC) |
G65 (g) |
B611 (g) |
Welding Process |
Weight |
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GSQD671Mo-4 |
D1.6 |
63-68 |
0.040±0.005 |
0.870±0.005 |
Carbon-dioxide arc welding |
15 kg/Spool |
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Chemical Composition(%) |
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Fe |
C |
Cr |
Mn |
Si |
B |
Mo |
Ti |
V |
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Bal. |
3.8-4.2 |
19.0-22.0 |
0.8-1.5 |
0.6-0.9 |
1.2-1.7 |
1.4-1.8 |
0.5-0.8 |
0.1-0.3 |
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Welding Parameters |
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Electricity |
Voltage |
Current Type |
Shield Airflow |
Gas Flow |
Welding Torch Angle |
Wire Extension |
Welding Speed |
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220-280A |
22-28V |
DCEP |
Pure Carbon Dioxide |
20L/min |
80° |
15-20mm |
35cm/min |
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Welcome contact us anytime if you are interested in this product and any other welding wires like Stainless Steel Welding Wire. All the best! Luoyang Golden Egret Geotools Co., Ltd |