Threading pipes and fittings is a basic skill that manufacturers and pipefitters must have. But in this precise thread-cutting process, sometimes, even the experienced hand can also make mistakes.
There could be multiple problems, like cross-threading or blunt-cutting tools, that can derail your project.
We have put together this list of nine tips to help you avoid these frustrating mistakes and achieve clean, properly cut threads every time. Implementing this advice will make you an expert at threading in no time.
Tip 1: Always use the correct threading tools
This might sound like common sense, but it’s important to have the right tools for the job. Make sure your pipe threading taps and dies are suited for the size and thread specifications of your pipe or fitting in question. A wrong tap or die not only damages both threads but also spoils the tool employed as well. Hence, before moving on take some time to ensure that you have got everything set accordingly.
Tip 2: Examine tools before using them
Even if you have the right taps and dies, dull or damaged cutting surfaces can quickly ruin threads. Before using any kind of threading tool go through them carefully searching for nicks, cracks or excessive wear on cutting edges. Replacing equipment whose performance is doubtful rather than ruining a costly piece is sometimes a better option.
Tip 3: Clean threads well
Even a small amount of debris like rust, dirt, or grease on the pipe threads can interfere with cutting tools and lead to uneven threads. Thoroughly clean the pipe and fitting threads with a stiff wire brush or abrasive pad before threading to remove any residues.
Tip 4: Use cutting fluid
Not only is it recommended that you use high-quality cutting oil or thread lubricant when tapping and threading – It is absolutely essential. This oil reduces friction, dissipates heat build-up, as well as allowing the cutter to do its work correctly and smoothly enough. Don’t cut corners here.
Tip 5: Give proper pipe support
In order to prevent the movement or slipping of the piece during the thread-cutting process, it is important to secure the workpiece firmly in place. This is particularly important at the starting of threading when pipes are prone to shifting out of position most.
Tip 6:Be extra careful at the beginning
The most expensive thread errors by far happen at the beginning part of the threading process. At this point, one needs to be more cautious, keeping the tool used for threading straight and slowly moving it to allow full engagement. If this first vital step is done in haste, there will be many cases where pipes will cross thread and cutting surfaces get damaged.
Tip 7: Maintain the right speed
While you do not wish to rush into beginning threads, neither would you like turning dies too slowly after the threads are properly engaged because that would tend to work-harden the metal and tear up threads. Listen for a smooth, steady cutting action, and progress at a moderate speed to avoid issues.
Tip 8: Stop when threads bottom out
It is essential to be attentive as you cut threads so that you know when the bottom of the threads has been reached. Dies that continue being turned beyond this stage are useless and also accelerate the rate at which the cutting surfaces wear out needlessly. After threads are finished, stop using dies right away.
Tip 9: Routine cleaning and maintenance of tools
Make a habit of properly cleaning and maintaining your threading tools after every use. Cutting edges dull quickly when debris accumulates on them. Store taps and dies in a clean, lightly oiled container when not in use to keep away rust and corrosion from affecting them.
Conclusion
If you adhere to these nine tips, you can become a pro at making tight screw-threaded joints without leaks every time. Don’t give up even if some initial efforts might result in mistakes. Threading requires practice, but it sure beats replacing damaged fittings that leak; a lot goes into this process, but it’s worth it for cost savings in terms of replacement costs for fitting running through pipes that leak or burst.
