High speed Machining Grey Cast Iron Brake Disc with Halnn Tools RCMX060400Y CBN Tips
1. Halnn Tools CBN Tools Finish Machining Grey Cast Iron Brake Disc
CBN/PCD inserts are the best choice for high speed and precision machining of high hard material, difficult to cut material and cast irons. They can be used for machining abrasive resistance alloy cast iron like brake disc and brake drum; Or machining normal gray cast iron with high speed, like engine cylinder and cover; Or machining alloy cast iron and alloy cast steel, like roller, slurry pump; Or used for machining some tough material such as hardened steel, bearing steel and die steel; They also can be used for machining high temperature alloy like aeroengine.
2. Why we Choose Halnn Tools CBN Tools Finish Machining Grey Cast Iron Brake Disc
Halnn researched 4 type CBN inserts grades specific for machining brake disc which can meet their
Brake disc has low hardness, traditional cutting tools can machine brake disc, but why do the manufacturers also choose CBN inserts which costs higher than traditional cutting tools?
(1) Brake Disc belong to Mass production, it requires high on the production efficiency, traditional cutting tools,such as carbide insert can machine brake disc, but the process efficiency is low. It only suit for small production.
(2) Nowadays most mass production brake disc enterprise, they use CNC Lathe, and many manufacturer know that traditional cutting tools can be used for high speed cutting, when the cutting speed is above 350m/min, the insert will wear rapidly which will affect the production efficiency and the workpiece surface quality.
3.CBN ToolS Characteristics
| Insert Grade | Binder | CBN Content(%) | Granularity | Hardness(HV) | Cutting Depth | Condition |
| BN-S300 | AL,TIC | 97 | 4—6 | 3400—3600 | ≤2mm | Continuous |
| BN-K10 | Si,Co | 95 | ≤ 2 | 3300—3500 | ≤1.5mm | Continuous |
| BN-K20 | AL | 95 | 2—4 | 3400—3600 | ≤0.5mm | Continuous |
| BNK30 | Si,TIC | 97 | 2—4 | 3400—3600 | ≤0.5mm | Continuous |
4.Pictures of Halnn Tools CBN Inserts
5.Detailed Data of RCMX CBN inserts
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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 | BN-S10 |
| RCMX060400Y | | 6.35 | 4.76 | | S01020 S02020 S03020 S05020 S10020 S20020 | ● | ● | ◎ | ● | ● |
| RCMX060500Y | | 6.35 | 5.56 | | ● | ● | ◎ | ● | ● |
| RCMX060600Y | | 6.35 | 6.35 | | ● | ● | ◎ | ● | ● |
| RCMX060700Y | | 6.35 | 7.94 | | ● | ● | ◎ | ● | ● |
| RCMX090700Y | | 9.525 | 7.94 | | ● | ● | ◎ | ● | ● |
| RCMX120700Y | | 12.7 | 7.94 | | ● | ● | ◎ | ● | ● |
| RCMX151000Y | | 15.875 | 10 | | ◎ | ◎ | ◎ | ◎ | ◎ |
| RCMX191000Y | | 19.05 | 10 | | ◎ | ◎ | ◎ | ◎ | ◎ |
| RCMX201200Y | | 20 | 12 | | ◎ | ◎ | ◎ | ◎ | ◎ |
| RCMX251200Y | | 25.4 | 12 | | ◎ | ◎ | ◎ | ◎ | ◎ |
6.Application Case
| Item | Brake Drum Manufacturer | Image |
| Component Materials | GC250 (HT250) |  |
| Machining Process | Roughing, Dry Cutting |
| Hardness | HB170~HB210 |
| Selected insert | CNGN120412 |
| Testing Performance Comparison |
| Insert Materials | Cutting Parameters | Machining Qty |
| Halnn BN-S300 | Vc=1150,Fr=0.2,ap=0.25 | 200 |
| Other PCBN | Vc=880,Fr=0.2,ap=0.25 | 30 |
| The Tool Life of Coating CBN Inserts improved about 30%, And the roughness Kept Ra1.6 |
7.Product Certificate
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High Speed Machining Grey Cast Iron Brake Disc with Halnn Tools RCMX060400Y CBN Tips Images
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