High precision tungsten carbide CR
The newest super wearable tungsten coating techniques and the machining of the corrugated rolls help customers to achieve lower paper waste, higher running efficiency and better economic productions. The life span of the tungsten carbide corrugated rolls is 3-5 times longer than the hard chrome corrugated rolls, which reduces about 65-80% changing of corrugated rolls, also helps to avoid the frequent loss of changing spare parts due to the wearing and tearing of corrugated rolls.
Technical figures of tungsten carbide CR
- Special 48CrMo alloy steel fine forge for corrugated roll
- Hardness of base unit after mid frequency quenching ≥ HRC 58
- Coating hardness ＞HV 1250-1400
- Combination hardness ＞ 75MPa
- Porosity ＜1%
- Optimizing design for economical profile
- Precise grinding and polishing gear surface, roughness Ra ≤ 0.5μm
Tungsten coating techniques
- The most advanced equipment in the world
- Modern high-tech coating material product
- Advanced professional thermal spray technology
- Unique high precision polishing techniques
Longer total life
Longer linear meters/time
Higher paper board quality
Lower spare parts loss
Lower production cost
Lower consumption cost
The technical advantages of Peripheral heating CR
- Higher heating efficiency
- More even temperature distribution
- More even glue application
- Lower requirements for steam pressure
- No ‘banana effect’ while idling
- Reducing the pre-heating time
- Save steam usage
Boli CR excellent flute design
Boli can adjust the flute design base on customer requirements under the support of BHS and make professional new customized flute design for corrugated roll.
We better our precise flute design through a professional software to comprehensively consider factors of pitch, paper board hardness and, thus to help customer to achieve production with low gsm paper usage.
Flute
Number
Height
K
26±2
5.5~6.5
A
34±3
4.5~5.0
C
41±3
3.5~4.0
CB
45±3
3.0~3.5
B
50±4
2.5~3.0
BE
66±3
1.9~2.1
E
93±6
1.1~2.0
F
136±20
0.6~0.9
G
185±12
0.5~0.65
Specification and accuracy index of Boli corrugated roll
Corrugated roll production in 39 processes
Equipment and Techniques
- An over 6000 m2 workshop
- The most advanced automatic CNC precision corrugated roller grinder
- American JP8000 supersonic flame thermal spray machine for tungsten carbide corrugating rolls
- Only CNC chrome plating machine in China
- First and only Germany imported ZEISS three coordinate measuring platform for the quality checking of corrugating rolls in China
- CNC controlled mid frequency quenching and automatic welding equipment
- World class advanced 5 meters CNC machining center
Powered by BHS
BHS offers full support to Boli Corrugated rolls comprehensively via technicality, production, quality control, after sales services, etc
Technicality
Production
Quality control
After sales services
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