1. Halnn Tools BN-S20 CBN Tips High speed Machining High speed Machining 42CrMo4 Bearing steel Wind turbine bearing
As an important part of wind power generation, wind power bearings often use heat treatment technology to improve the performance requirements of wind power bearings. The heat-treated wind power bearing has high hardness, and the high-precision wind power bearing often uses grinding as the final processing step.
However, with the rapid development of the manufacturing industry, the competition in the market is intensifying. The adoption of high efficiency and low cost is the process of hard turning (turning grinding by turning) is the processing trend of the wind power bearing industry.
Advantages of hard turning (replacement grinding by turning) wind power bearings:
(1) High production efficiency;
(2) Hard turning is a clean production, which reduces the production cost, and the iron scraps turned off are more convenient for recycling;
(3) It is not necessary to use special machinery for hard turning of wind power bearings, and it can be carried out on existing ordinary lathes or CNC lathes;
(4) Most of the heat generated during the hard turning process is carried away by the chips to obtain a good surface quality.
2.Advantages of Halnn Tools CBN Tips High speed Machining High speed Machining 42CrMo4 Bearing steel Wind turbine bearing
The dimensions of wind power bearings after heat treatment are generally 2mm-6mm. Halnn Tools recommends the use of BN-S20 grades, which can be cut off with a large margin. The line speed is controlled at 90-150m/min. The surface roughness of the finished vehicle channel reaches Ra0.3μm. The bottom of the hard turning channel is all <0.005mm.
For example, Halnn Tools BN-S20 brand replaces the inner and outer rings of the variable-speed bearing for the 1.5MW unit with turning. The outer diameter is φ1900mm and the thickness is 130mm. The grinding process is used to grind the wind power bearing for more than 18 hours. BN-S20 grade CBN tool car processing, the same surface finish, the time is only 4.5 hours, the efficiency has increased nearly 4 times.
3. CBN Tips Characteristics
|
Type
|
Dimension
|
Grades
|
|
L(mm)
|
φI.C(mm)
|
S(mm)
|
r(mm)
|
BN-K1
|
BN-S20
|
BN-S200
|
|
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
|
|
◎
|
◎
|
◎
|
4. Detailed Data of RCMX CBN Tips
|
Insert Grade
|
Machining Hardness
|
Processing Condition
|
Machining Materials
|
|
BN-S20
|
HRC45~68
|
Roughing
|
Hardened Steel
|
|
Semi-finishing
|
|
BN-S200
|
HRC45~68
|
Semi-finishing
|
Hardened Steel,
Superalloy
|
|
Fine Finishing
|
|
BN-H21
|
HRC62~68
|
Fine Finishing
|
Hardened Steel
|
|
BN-H10
|
HRC45~68
|
Fine Finishing
|
Hardened Steel and High Strength Cast Iron
|
|
BN-H20
|
HRC45~63
|
Fine Finishing
|
Hardened Steel
|
|
BN-H11
|
HRC45~63
|
Fine Finishing
|
Hardened Steel
|
5.Application Case
|
Machining Site: Raceway and End Surface
Materials: 42CrMo4
Hardness: HRC47~55
Insert Model: BN-S200 RCGX120700Y
Cutting Data: Vc = 110m/min, Fr=0.45mm/r, ap=0.5mm
Processing Type: Dry Cutting
|
|
Compared with the ceramic cutters
|
|
Insert Materials
|
Cutting Speed (m/min)
|
Tool Life
|
Roughness
|
|
Halnn BN-S200
|
110
|
8
|
Ra0.8
|
|
Ceramic Cutters
|
90
|
1
|
Ra1.6
|
6.FAQ
Q1. How is your quality?
A1. We have a very seriously control system. We guarantee the high performance of our products.
Q2.What is the Warranty for your products?
A2. For one year from the date of purchase, If any problem on our side, we will make prompt response, and take the shipping cost and send replacement.
Q3. Do you have different quality for different kind of stone?
A3. Yes, according hardness of stone and stone’s feature, we have different typology respectively.
Q4. If we need technical support, can you offer us?
A4. Yes, we have an experienced team, offering our customers additional benefits with specific advice, by our product managerment staff, engineers and technicians.
