Views:3 Author:Site Editor Publish Time: 2019-03-27 Origin:Site
Re: Top hammer drill consumables online.
Indicative annual consumption numbers below(QTY&SIZE):
6600x 45mm (R32/SR35)
500x 64mm (R32/SR35)
400x 102mm (R32/SR35)
450x 3.1m hex rod (R32/SR35)
450x 4.3m hex rod (R32/SR3535)
250x 3.1m round rod (T38)
300x HLX5 shank adaptor T45-T38
500x RD525 shank adaptor T45-T38
550x coupling T45-T38
Customer want to buy: SR35 Thread 44mm 45mm Button Bits.
Rocks Information: Extremely abrasive rock conditions seeking a consumable manufacturer who would be able to work with us to trial different carbide grades to find the best performing and potentially alter bit designs slightly as required.
In addition to the above consumables our mine has one drill rig that consumes ST58 and one which uses ST68 which I would be happy to discuss consumables for in the future also.
More Details we knew after we paid a visiting and testing our bits in their mines underground 1500 kilometers.
Our current bit design is 6x 10mm gauge buttons and 3x 8mm centre buttons. I am unsure if you are aware of the grades of Mitsubishi carbides but we have found that MG10 performs the best in our ground condition (as per the attached brochure). Our bit design is similar to ‘type 23’ however this too has been customised specifically for our ground to have more room for flushing away cuttings.
we generally achieve close to 150m of drilling per bit. Although our rock is not classes as extremely hard it contains a lot of pyrite, some quartz and some iron / magnetite which makes it very abrasive. Due to the abrasive rock we only use round buttons. Our understanding is that a lot of the wear to our bits occurs due to re-grind of rock cuttings which we find is usually addressed by ensuring a lot of water is delivered through the face flushing holes and that there are adequate flushing grooves cut into the face and gauge of the bit matrix. The ground condition is generally very competent so we do not require retrac style bits.
Below are the Photos of our Samples we prepared for our clients, and the photos of our bits after testing.