Rapid Ref : 420158

Hypertherm Nozzle, for Duramax Hyamp Torch (45A)
420158

Name: Hypertherm Nozzle, for Duramax Hyamp Torch (45A)
SKU: 420158
Price: 6.24 GBP

£6.24 EX VAT

SSP Suggested Selling Price = £7.80 YOU SAVE £1.56

Powermax 125 / Duramax Hyamp Parts FAQs

Practical answers on the consumable parts for a high-current air plasma torch: gouging, fine-cut and drag-cut sets, wear checks and fitting.

What is the difference between control-type and removal-type gouging shields?

Makers usually split gouging sets into two styles. The control style is intended for precise metal removal, light washing and shallow gouges, and is generally the better choice while you are learning. The removal style is intended for aggressive metal removal, deep profiles and heavy washing.

Torch angle, travel speed and current also change the gouge: moving faster gives a shallower, narrower groove, and moving slower gives a deeper, wider one. Match the shield to the work, and check the part description and your manual to confirm that the set suits your torch type and current range.

How do I tell when an electrode is worn out?

Normal wear shows as a small round pit forming in the centre of the electrode tip, which slowly deepens with use. When the pit becomes too deep the arc can attach to the copper holder instead of the emitting insert and damage it, so replace the electrode before it reaches the point where it will no longer start or hold the arc.

The pit depth at which to replace depends on the maker and the current, so use the figure in your manual rather than guessing. A pit that is ragged, off-centre or very black can also point to a problem with the gas, so check your air.

What does a worn nozzle look like?

A new nozzle has a sharp, round orifice. Replace the nozzle if the orifice is nicked or notched, has gone oval or out of round, or has rounded-off edges. Slight enlargement of the hole is normal wear, but it shows up in the cut as more bevel, more dross on the underside and a wider kerf.

Most makers advise changing the electrode and nozzle together, because a worn electrode quickly damages a new nozzle. Never refit a nozzle you have already judged to be worn, and keep it clear of slag.

What are fine-cut consumables for?

Fine-cut sets are made for intricate, fine-featured shapes in thin sheet. They are designed to give squarer edges, tighter tolerances and a narrower kerf than standard parts, and they are normally used at the lower end of the machine's current range on mild and stainless steel.

They are made for both hand and machine torches. On a machine table the result also depends on a rigid torch mount, good height control and a suitable cut speed. Maker guidance recommends a shield rather than a deflector for consistency and nozzle life, and expects small adjustments from one sheet to the next.

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