Finishing Grey Iron Brake Drum with TNM0160604 CBN Turning Tools from Halnn Tools
1. Halnn Tools CBN Turning Tools Finish Machining Cast Iron Brake Drum
Relevant information indicates that the parameters of the brake drum of the car are as follows,Roundness and coaxiality tolerance ≤0.03mm,, Radial runout ≤0.05mm, ,Static unbalance ≤1.5N•cm, surface roughness≥Ra3.2.
Conventional tools are difficult to meet the market's demand for shape tolerances. In this case, Halnn superhard CBN tools can be used to not only easily meet the shape tolerance and surface roughness requirements of the brake drum, but also to efficiently process and improve production efficiency.
2. Why we Choose Halnn Tools CBN Turning Tools Finish Machining Cast Iron Brake Drum
For gray cast iron parts, Halnn has special superhard tool processing. The BN-S30 grade is recommended for the roughing process, the BN-S300 grade is recommended for the semi-finishing process, and the BN-K20 grade is recommended for the finishing process. Among them, BN-S30 grade and BN-S300 grade belong to solid CBN inserts, and BN-K20 grade belongs to brazed PCBN inserts.
For example, Halnn superhard tool BN-S30 grade roughing pressure vessel flange adopts SNMN120712 model, cutting parameters are: speed=450,Cutting depth (ap)=3mm,Feed rate (Fr)=0.5mm/r.
Dry cutting, a cutting edge of 410 pieces, an inserts with 8 cutting edges, equivalent to an inserts processing 3280 pieces of flange. Can see its tool strength.
3.CBN Turning Tools Characteristics
| Insert Grade | Suited Materials | Machining Type | Typical Application |
| BN-S300 | Gray Cast Iron | Roughing, Finishing | Brake Disc, Cast Iron Engine,Gearbox, Cylinder Liner |
4.Pictures of Halnn Tools CBN Turning Tools
5.Detailed Data of DNML CBN Turning Tools
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| Type | Dimension |
Standard Chamfer | Grades |
| L(mm) | φI.C(mm) | S(mm) | r(mm) | BN-K1 | BN-S20 | BN-S200 | BN-S300 |
| TNM0160604 | 16.5 | 9.525 | 6.35 | 0.4 | S01020
S02020 | ● | ● | | ● |
| TNM0160608 | 16.5 | 9.525 | 6.35 | 0.8 | ● | ● | | ● |
| TNM0160612 | 16.5 | 9.525 | 6.35 | 1.2 | ● | ● | | ● |
6.Application Case
Compared to coated carbide inserts: the cutting speed of the Halnn superhard BN-S300 grade CBN insert is 2.8 times that of the coated tool, and the feed rate is 2 times, the tool life is 15 times for the coated tool.
| Tool material | Feed Rate
Fr (mm / r) | Cutting Speed (Vc)
(m/min) | Tool life |
| Halnn superhard BN-S300 grade | 0.9 | 280 | 75 pieces / edge |
| Coated carbide insert | 0.45 | 100 | 5pieces / edge |
7.Product Certificate
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Finishing Grey Iron Brake Drum with TNM0160604 CBN Turning Tools from Halnn Tools Images
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