The material and technique process of the alloy are critical for buttons. The purpose of this article is to discuss troubleshooting from button while using. Keeps the machine running in a stable condition. Avoid overdrilled front button and gauge button. Be careful snakeskin. To the naked eye, the button surface looks shiny. However, looking through a magnifier you will see a network of micro cracks. When snakeskin develops, the risk of catastrophic button failure increases. Regrind!
| Description | Cause | Remedy |
| Button cracked or chipped Button broken on the same level as surrounding steel | • Overdrilled GB and FB | • Reduce intervals between regrinding |
| • Snakeskin | • Shorter intervals between regrinding | |
| • Wrong regrinding method or equipment | • Use proper equipment and technique for regrinding • Regrind despite the button not being worn. Microscopic cracks in the carbide will develop into failures | |
Button crushed at the same level as surrounding steel | • The button protrudes too far due to high wear of the surrounding steel | • Regrind the button to normal height, according to the bit size. Make sure the height of the buttons are even |
| • Normally secondary failure due to foreign objects in the hole | • Fish or clean foreign objects out of the hole | |
Button crushed | • Overdrilled GB and FB | • Reduce intervals between regrinding |
| • Uneven wear due to low RPM | • Adjust RPM | |
| • Snakeskin | • Shorter intervals between regrinding | |
| • Wrong regrinding method or equipment | • Use proper equipment and technique for regrinding • Regrind despite the button not being worn. Microscopic cracks in the carbide will develop into failures | |
| • Anti-taper (when gauge buttons are crushed) | • Use grinding templates to control the grinding result • Buttons must be reground when anti taper exceeds recommendations | |
| Button missing or out of position | • Insufficient feed force | • Set correct feed force |
