Basics of Core Drilling | Troubleshooting and Maintenance Tips

 Core drilling Sydney, in essence, is an engineering process which makes use of specialized equipment or machinery for drilling holes into common building materials (mostly concrete). This operation is highly favoured when constructing structures like manholes for the sewer network, creating spaces for pipes in concrete walls and many more areas.

But how do these machines work? Do you HAVE to get a sample each time you drill? Do you have to be a senior engineer to understand how it works?

Well, in some cases, you might need assistance from a superior while in other cases, all you need is a little here and there and you should be golden.

This blog provides you with the basic things you need to know when dealing with core driller flawlessly.

Different components of a core driller

Before understanding how the core driller works, you need to know all the components that had to be clustered together to make up the whole machine. Here are the parts which make up the machine:

  1. The drill bit.

Also called the drill string, it's the tip of the core driller which comes in direct contact with the surface itself. It’s usually made of industrial diamonds or tungsten carbide and is used for cutting samples from the structure.

  1. The reaming shell

The reaming shell reams the drill hole to the right diameter stabilizing the bit to fit the desired diameter. This is what adjusts the drill bit to fit any diameter you want during operation.

  1. The core barrel

The core barrel is likened to a holding component which holds the sample being drilled from the drill bit. You should know that the core barrel never rotates. During your routine checks, if you notice the core barrel spinning, then you need to call it in for repairs.

  1. Drill rods

The drill rods connect the drill bit, core barrel and the reaming shell to the drill rig (the machine that receives all the input). The purpose is to transfer torque, rotation speed, feed and lifting force from the drill rig to the drill bit. In some cases, a casing tube might come in handy to avoid the joke caving and destroying the entire project.

  1. The drill rig

The drill rig is that part of the entire machine you can easily access. This is the part containing all the electrical housing as well as input devices. You input your commands - the drill carries it out.

Why retrieve a sample at all?

If you’ve been at a core hole drilling Sydney site before, you’d notice the engineers always emphasize getting the sample. This is the sample given to the geologists for analysis. They perform procedures to collect data from the rock or soil sample. 

Some of the data they collect from these samples is information on things like climate change of the area based on dating techniques done on the rock, their formation pattern, sedimentary composition and myriads of other information geologists need. The information gotten is then used to determine the compatibility of their structure with that of the surroundings.

The entire drilling process explained.

The core drilling process is classified into three principal operations which are:

  1. The actual drilling

Here, you operate the machine to take on the drilling through the material of interest. You need to get accustomed to the core drilling machine. Once you do this, this wouldn’t be a tedious task for you to do.

  1. Collecting the sample

This is usually the next step after drilling through the material. You get the sample into the core barrel making the drill bit extend further for easy drilling.

  1. Resuming the drilling process

After collecting the sample, the drilling process restarts again. The steps of drilling and retrieving the core is called a round trip. For each round trip, the drill hole keeps extending by the length of one or two drill rods. 

The process is somewhat straightforward. However, make sure you’re aware of the technique your company uses. This way, you avoid making costly mistakes while on the job.

Importance of core drilling.

Core drilling Sydney is a must-have for many Australian mining and construction companies. It comes in handy when holes need to be made either for construction purposes or research purposes. Cores can be made when constructing manholes for sewers, holes for pipes, or any other large-diameter penetrations in concrete and the likes.

Tips for maintaining your core driller

Here are some tips for maintaining your core driller:

  • Inspect regularly.

  • Oil all necessary parts.

  • Don’t let an issue become a complication due to negligence.

  • Pay good attention to your drill bit.

  • Choose the right equipment for the right job.

Precautions to take while operating a core driller.

  • Avoid big clothing.

  • Be conscious of your workpiece.

  • Always drill pilot holes.

  • Ensure you correctly set the drill bit before an operation.

  • Use the proper pressure for the drill.

  • ALWAYS put on your PPE (Personal Protective Equipment).

How to troubleshoot common problems encountered when using a core driller.

There are some common problems you should always look out for when using a core driller. Here are three of them with solutions for them.

  1. Segment bent over.

This is a problem usually caused by the operator using too much pressure while cutting. The best thing when encountered is to replace the barrel, decreasing the pressure when cutting as well.

  1. Segment loss.

This could be caused by overheating, debris, loose reo and several other things. The best thing to do here is to clean the hole of rocks, increase water flow and hold the drill firmly during operation.

  1. Cracking barrel.

This is caused by too much pressure by the operator. When operating next time, use a softer bond and reduce the pressure of operation.

If you have any questions about core drilling or require core hole drilling Sydney, Australia, contact us today.


Disclaimer:- This is a generic Information & post; content about the services can be changed from time to time as per your requirements and contract. To get the latest and updated information, contact us today or visit our website.


Location: 2/14-16 Penrith St, Jamisontown NSW 2750, Australia

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