Down The Hole Drilling Trouble Shooting – Hammer Piston Broken

hardrockdrills - Tuesday, May 15, 2018.
Enviado por hardrockdrills

Hammer Piston Casing Breakage and Tread Breakage have been demonstrated in former article, today we will show you some cases of Hammer Piston broken.

Case 1 

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  • Problem
    • Galling
  • Probable cause
    • The signs of wear and streaking indicate that galling is the cause of this breakage that has occurred shortly after another piston breakage in the same hammer
  • Corrective action
    • Make sure that piston casing is polished or honed before a new piston is installed
  • Case 2

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  •  Problem
    • Broken piston internal
  • Probable cause
    • The crack propagation pattern shows that the failure started from the hole in the piston.
    • Most probable cause is galling between piston and feed tube
  • Corrective action
    • Check lubrication system and contamination in the  hammer.
    • Look at signs of galling on feed tube at hammer maintenance
  • Case 3

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  •  Problem
    • Piston failure
  • Probable cause
    • Typical sign of some sort of damage to the surface on the piston most probably from mishandling during hammer maintenance
  • Corrective action
    • Be careful when handling hammer components and check for signs of surface damage
  • Case 4

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  •  Problem
    • Piston striking face damage
  • Probable cause
    • These signs of erosion may come from jetting of water trapped between piston and bit striking faces
  • Corrective action
    • Reduce the amount of water injection
  • More Article

  • Down The Hole Drilling Trouble Shooting – Hammer Piston Casing Breakage
  • Down The Hole Drilling Trouble Shooting – Treaded
  • Selection of DTH Drilling Tools
  • Rotary Drilling Method
  • General Drilling Method and Application
  • DTH Drilling Care & Maintenance – Part One
  • DTH Drilling Care & Maintenance – Part Two
  • Acerca de hardrockdrills

    Shanghai Hardrock Drills Co.,Ltd is located in Shanghai, who is dedicated in designing and manufacturing the drilling rigs. The rigs have been widely used in water well drilling, soil sampling, geotechnical testing, mine exploration, foundation drilling, geothermal drilling, etc.

    Our drilling rigs are easy to set up, operate as well as maintain. And we always put the quality on the top. We use the 3-d software to design and FEA software for simulation to insure our products are strong enough, but not overdesigned to reduce cost.  Every individual component is inspected and each machine is tested carefully by our quality people before shipping to customer.

    Shanghai Hardrock Drills Co.,Ltd has a powerful technical force and fine equipment, it’s leading in the products design, workmanship and production capability, it’s capable to design, manufacture, and assure the quality of whole series of drilling rigs. The products are sold to over thirty countries and regions including Asia, Africa, Europe, and South America. Shanghai Hardrock Drills has been ISO9001 quality system and national CCC certification approved.

    We are dedicating to BUILD TRUST with customer and find new ways of working not only to meet customer specific requirement,  but also get their job done more easily, efficiently and economically.

    Considering the application condition in developing country especially for those remote area, our product is designed to be easier for transportation and best price / performance ratio.

    Contact US

    • No 3128, Huyi Road, Shanghai, China

    • +86 15801802455

    • +86 15021814925

    • havy.chen@hardrockdrills.com

    • service@hardrockdrills.com

    • +86 15021814925

    •        Web: https://www.hardrockdrills.com/

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    Información de contacto

    No 3128, Huyi Road, Shanghai, China +86 15021814925 +86-21-62157825 havy.chen@hardrockdrills.com service@hardrockdrills.com Web: hardrockdrills.com

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