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What to do if the rock drill joint leaks

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What to do if the rock drill joint leaks [PDF]

6 FAQs about [What to do if the rock drill joint leaks]

How do you re-regrind a rock drill?

Adjust drilling pressures. Regrinding should be done when the wear fl ats are max. 1/3 of the button diameter. Monitor coupling temperatures and adjust feed pressures accor-ding to recommendations. Adjust rotation speed. Use Retrac bits and activate anti-jamming when drilling. Use a rock drill with power extractor.

What should I do if my drill bit is worn?

Drilling with worn bits Adjust feed and percussion pressures to the rock conditions. Do not engage full percussion unless the bit is firmly seated against rock. Use reduced percussion when collaring on uneven surfaces. Replace worn components. Regrind the bit when the wear flats are max. 1/3 of the button diameter. Misalignement of rods.

What should I do if my drill rod is worn?

Replace worn components. Do not put a worn coupling on a new rod. Align drilling components with extension. Maintain button bits in time. Replace rod. Treat water. Inadequate feed pressure. Star-ting point pittigs on thread Employ guide tools and ballistic button bits. Monitor feed pressure and tune to conditions.

How do you fix a hole in a Sandvik drill bit?

Hit at corners Do not hit rods when stuck in hole. Replace worn bushing. Worn bit socket. Using a damaged bit with a ridge or lip within the socket. Change bit. Change bit or ream out ridge. Adjust feed force. Use Sandvik bits, do not ”mix and match”. Use bit with a symmetrical but-ton design. Drilling through the bottom of blocks.

How do you ReTRAC a rig?

Use a Retrac bit with semi-bal-listic buttons to tighten string. Match feed and rotation speed according to specifi cations. Use thread grease. Adjust drilling pressures. Change to recommended oil. Equip rig with a cooling unit. Use Retrac bits and activate anti-jamming when drilling. Use a rock drill with power extractor.

How do you fix a hole deviation in a hammer ring?

Check and address any issue of hole deviation Misalignement of rods. Steel hit-ting coupling shoulder Replace components in time. Take action to drill straighter holes. Avoid excessive back hamme-ring. Increase the feed force. Make sure that the joints are tightened before percussion. Align drilling components with extension.