Atlas Copco Double the Service Life of Drill Bits
Jazz Grinding Machine is equipped with a patented grinding wheel designed by Atlas Copco, which can 360 degree grind the alloy button on bits and so double their service life.
Why do you grind drill bits?
For any customer who wants to reduce the costs of drills, drill bits are most noteworthy. A sharp drill bit can earn money for a company, but a worn one can only increase its costs. Normally, a bit needs to keep a good shape during the whole process of drilling to ensure the drilling efficiency. A worn drill bit can reduce the impact energy at the bottom of a hole, which will not only make the threaded joint loose but also can generate great heat that cause damage to the threaded .With the gradual wear of buttons, the space for cutters becomes narrow, and this means that cutters will be crushed into smaller, making the worn drill bit harder to drill straight holes. Moreover, a worn drill bit may cause significant influence on the drilling efficiency. In-time grinding can not only reduce the early failure and increase the service life of the bit but also ensure the penetration rate to prevent thread loose and button abnormal damage.
A Jazz grinding machine is equipped with patented grinding wheels designed by Atlas Copco, which can 360 degree grind the alloy buttons of drill bits, not only ensuring the perfect button shape but also reducing excessive grinding of buttons; in addition, a Jazz grinding machine can bring client more benefits. As introduced by Zhao Xianzhong, equipment director of Wuji mining workshop of Anhui Mining Development Co., Ltd., this type of grinding machine can process a wide range of bit size from 35mm to 254mm; high efficiency (10 seconds for a tooth and 3 minutes for a whole bit), simple operation and easy maintenance; mobile perfection: rig-mounted or using 3-leg stand; low energy consumption: maximum air pressure at 7 bar and air consumption of 1.5 cubic meter/min.
To test the effects of Jazz grinding machine, Anhui Mining Development Co., Ltd. launched a field test in Wuji underground iron mine, where the rock hardness is F=12. The following are the details of the test:
|Drill String||T45 Shank adapter|
|T45/1525mm Speed rod|
|T45/D76 Ballistic button bit (Product Number:90510334) centrally-concave ballistic-teeth bit|
|Testing Site||-375m horizontal 14-3 roadway|
|Test Content||Grinding the used drill bit to test its service life|
|Bit No.||Drilling Depth after First Grinding(m)||Drilling Depth after Second Grinding(m)||Total Depth after Two Times of Grinding(m)|
Now we can find that the T45/D76 sharp drill bit that has already been out of use can extend its service life for 130.5m after the grinding of an Atlas Copco Jazz grinding machine. The new bit has an average service life of 120 m. This means that the service life of this type of drill bit can be extended even more than a double after two times of grinding. 400 bits are used every year in this mine and a Jazz grinding machine can help save at least 200 or more. The economic benefits are huge!
When talking about his experience in using this equipment, Zhao Xianzhong, equipment director of Wuji mining workshop of Anhui Mining Development Co., Ltd. said: “Drill bits grinded by Atlas Copco’s Jazz are effective and efficient with reasonable price, saving us great costs. We are very satisfied with them!”
For further information please contact:
- Caroline He
Senior Marketing Communication Specialist, Atlas Copco Mining and Rock Excavation Technique
Phone: +86 10 5870 6331 e-mail: firstname.lastname@example.org
Atlas Copco’s Mining and Rock Excavation Technique business area provides equipment for drilling and rock excavation, a complete range of related consumables and service through a global network. The business area innovates for sustainable productivity in surface and underground mining, infrastructure, civil works, well drilling and geotechnical applications. Principal product development and manufacturing units are located in Sweden, the United States, Canada, China and India.
Rock Drilling Tools is a division within Atlas Copco’s Mining and Rock Excavation Technique business area. It develops, manufactures and markets rock drilling tools worldwide. Its products are used for rock excavation within the mining and construction business for both surface and underground applications. The division is headquartered in Fagersta, Sweden and has production in six continents.