KGR Industries
Kgr IndustriesKgr IndustriesKgr Industries

Trouble Shooting

Drilling rock is a very difficult process and during drilling some problems with hammers might be faced. In order to avoid such problem the following precautions are taken


Compressor Output is Checked for
Temperature & altitude are adjusted
Air pressure is checked with pressure gauge
Air filters are checked
Minimum Level of rock oil is maintained

Drill Rods are Checked for
Air leakage’s throughout
Pressure loss in hose

Weight on bit is checked for
Feed cylinder dropping
Proper rotation & feed


Control tube is checked for
Correct diameter and height
Chips at internal diameter
Burrs on outer diameter

Check valve is checked for
Proper seating

Level of rig is checked for
Level jacks leakage
Hydraulic pressure dropping at valve end


Problem Cause Solution
Thread Locking Insufficient Lubrication
Use proper amount &type of thread lubricants
Damaged thread
Thread breakage Improper or damaged mating parts
Check the mating parts with api thread gauge
Threads rust
Maintain Proper Rust Preventive Oil
Operated with damaged threads
Check the mating parts
Outer Diameter Body
Wear Out
Abrasive formation
Increase hole cleaning
Avoid the wear out bits
Body cut Damaged threads
Remove the threads burrs


Hammer Case

Problem Cause Solution
Thread locking Insufficient lubrication
Use proper amount & type of thread lubricants.
Thread breakage/Crack Improper or damaged mating
parts Denting at hammer case
Check the mating parts with API thread gauge
Open proper breakout tools
Do not open with heat & hit
Threads rust
Maintain proper rust prevent oil
Operated with damaged threads
Check the mating parts
Od Body Wear Out Abrasive formation
Increase hole cleaning
Avoid the wear out bits
Body Cut Damaged threads
Remove the threads burs
To check control tube seating face perpendicular to honing bore in hammer case
Crack at Front Chuck End Case worn below acceptable limit
Use new bit
Replace hammer case
Id Wear Out Insufficient lubrication
Use proper amount & type of lubricants
To check compressor filter
To clean hammer case before assy
To check control tube id
To check coupler id
To check drill rods id
Cap drill rods after use
Foreign material contamination

Check Valve

Problem Cause Solution
Not sealing Worn or cut seal surface
(Spring tension may less)
Replace check valve
Replace spring
Melting Heavy temperature
Check compressor out put temperature
Use proper amount & type of lubricants

Control Tube

Problem Cause Solution
Od Rubbing Insufficient lubrication
Use proper amount & type of lubricants
To check compressor filter
To clean hammer case before assy
To check control tube id
To check coupler id
To check drill rods id
Cap drill rods after use
Replace worn partsPin taper (digger)
Control tube seating in hammer case (tiger)
Foreign material contamination
Work piston od hammer case
ID Misalignment
Cracked or Broken Heavy friction
Foreign material keep out
Use proper amount & Type of lubricants
Maintain proper alignment
Use proper amount & type of lubricants
Rust

Piston

Problem Cause Solution
OD Rubbing Insufficient lubrication
Use proper amount & type of lubricants.
To check compressor filter
To clean hammer case before assy.
To check control tube idTo check coupler id
To check drill rods id
Cap drill rods after use
Replace worn parts
Pin taper (digger)
Control tube seating in hammer case (tiger)
Foreign material contamination
Worn piston OD hammer case
ID Misalignment
Cracked or Broken Heavy friction
Foreign material keep out
Use proper amount &type of lubricants
Maintain proper alignment
Use proper amount of lubricant
Rust
Send mail
 
dthrotarydrilling.com 
 
Home | About us | Subscribe | Advertise in Magazine | Board | Technical Papers | Interview | E-Paper | Editor's Desk | Media Kit | Directory | Contact Us | Site Map
Terms & Conditions - Disclaimer Copyright © 2009 dthrotarydrilling.com All rights reserved.