Description
We are professional Forged Forging Steel Tunnel Boring Machine TBM Shield Cutter heavy duty Cutter wide Center Disc Cutter Rings Cutting Rings from china
TBM cutter rings material could be choosed according to tunnel working condition
FOllowing is material grade of Forged Steel TBM cutter Cutting Rings that we could produce
D3,1.2080, X210Cr12, SKD1
D2,1.2379,X153CrMo12, SKD11,DC53
H13,1.2344,X40CrMoV5-1,SKD61
AISI 52100,100Cr6 , EN31
1.2367, X38CrMoV5-3
TBM disc cutter is a disc-shaped roller cutter mounted on the cutterhead of tunnel boring machine, which is an excavation tool for breaking hard rocks. The type of disc cutters, in different sizes and specifications, can be mounted on the cutter heads of large trenchless construction equipment such as TBMs, shield machines, MTBMs, pipe jacking machines, shaft boring extension machines, and are widely used in subway tunnels, railway tunnels, diversion tunnels, urban underground pipe network construction, mining and other industries.
TBM cutter rings must be highly wear resistant and robust because they serve as the key excavation component.
Standard cutter rings are forged with alloy tool steel and heat-treated to HRC56-58 with an ideal balance between hardness and toughness, making them suitable for soft ground to mixed ground.
Heavy duty cutter rings are forged with alloy tool steel and particularly heat-treated to HRC57-59 with an ideal balance between hardness and toughness to avoid curling and fracturing, so they are suitable for hard rock and abrasive rock.
cutter rings are inserted with tungsten carbide tips and suitable for abrasive but not hard ground. The undulating nature of we would help the cutter to rotate in the low strength but abrasive rock, and avoid flat spotting.
The cutter rings are manufactured with ideal profile and tip width, usually 13mm to 25mm depending on ground conditions, in order to achieve high excavating efficiency and long lifetime.
Our TBM cutter rings can be interchanged completely with Herrenknecht, Palmieri, Robbins, and Wirth cutter rings.
We could produce we forging steel TBM cutter rings in size of 17", 18", 19" and 20" standard, heavy-duty, extra heavy-duty and TCI TBM cutter rings.
FOllowing is melting methods for forging steel TBM cutter rings
1 EAF: Electric Arc Furnace
2 EAF+LF+VD: Refined-smelting and vacuum degassing
3 EAF+ESR: Electro Slag Remelting
4 EAF+PESR: protective atmosphere Electro Slag Remelting
5 VIM+PESR: Vacuum induction melting
We could do forged, heat treatment, final machined TBM cutter rings as per clients drawing
We conduct a rigorous and wide range of test and inspection to ensure safe and superior quality products of all our TBM cutter rings
Chemical analysis by ASTM, ASME
Mechanical analysis
Tensile test by ASTM A370, E8/E8M
High temperature tensile test by ASTM E21
Impact test by ASTM A370, E23
Stress rupture test by ASTM E139
Micro structure test by ASTM E407
Macro structure test by ASTM E340, E381
Corrosion test by ASTM A262, A923, G48
NDE (UT, PT, MT) by ASTM A388, A745, MIL-STD-2154
3D Dimensional check
EN10204 3.2 Certification
For our finished production of forged steel TBM cutter rings should have following inspection report
Identification number, material number and designation, order number, drawing number,
Specification Number;
- Heat number, heat chemical analysis, melting method and product chemical analysis;
- Certificate of heat treatment including method of cooling, actual part temperature, holding
time, cooling condition and all re-heat-treatments by complete graphic temperature time;
- Nondestructive testing records,
- Results of all Mechanical Tests,
-Results of residual stress measurements (for process qualification),
- All probable deviation reports,
- Certification of NDT inspector,
- Dimensional and visual inspection report,
- Cleaning Verified
