Acetylene is the best fuel to use for the majority of applications, particularly when welding and cutting steel. However, any propane-based fuel can be used with the torch. Keep in mind when using a propane based fuel for welding mild steel you will have a very hard and brittle weld – not good for body work. But your Propane based fuels are excellent for cutting and scrapping
The primary benefit is that the DHC2000 uses 50-60% less fuel and oxygen over conventional gas welding torches. That's quite an advantage in an economy that has seen dramatic fuel increases over the past decade. Another key benefit lies in the DHC2000's ability to weld like a TIG and make a clean, concentrated cut similar to that of a plasma cutter; without the added cost.
The short answer is the start-up cost. For even a low grade unit you're looking at around $500 dollars and quality units can run in the thousands. MIG or TIG systems are useful and they have their place, particularly in industrial applications. However, their size, electrical requirements, and need for a shielding gas make portability difficult or impossible. Dragging them out into the field to repair a tractor, fence, or irrigation pipe can be impractical. Another potential disadvantage of MIG and TIG is that they create what is called a 'hard' rather than a 'soft' weld. Hard welds, particularly in ferrous (Iron, steel) materials are brittle and more difficult to drill, file or machine. For those of you doing restoration, auto body, metal art will find the soft weld of a oxy/acetylene weld the best for metal forming and shaping.
The warranty covers only the DHC2000 torch, for the lifetime of the unit.
Yes. The DHC2000 connects to a B fitting which is a standard in the welding industry. We supply the adaptors to convert the American B fitting to the Australian 5/8" fittings.
No. If you already have tanks equipped with a standard set of regulators they will work. However, some customers prefer to have the ability to more precisely control the pressure setting; which will optimize the efficiency of the torch.
Applications vary, but generally speaking the welding range is from .010" to .375" thick, or up to .5" for small applications.
Yes. Using what is called a carburized flame you can weld stainless up to 3/8" thick. As far as welding galvanized material goes, it is the same as welding mild steel. Where possible, grind or burn off galvanizing before you start your weld or cut, this will help you from breathing in the gas that comes off the burnt coatings.
Yes. A word of warning though: It is common to see a repair that was done using a nickel-based rod. There are two draw backs to this practice. First, the filler material will not expand and contract at the same rate as the cast iron part and thus allowing cracks to develop at the point of weld. The second is that it is harder to file and machine. For these reasons, we recommend using a 100% pure cast iron filler rod (w/ flux) when welding.
We have found that using a 4043 TIG filler rod (w/ high temp powdered aluminum flux) is ideal for most applications.
Options include: brass / copper TIG wire; solid copper house wire; and brass brazing rod (after removing the flux coating)
Yes, but only on non-ferrous materials (e.g. Alum.) Welding steel with propane will create a hard or brittle weld that is susceptible to cracking. For this reason, propane-based fuels should not be used for applications involving bodywork.
All welding is done with both the fuel and the oxygen set at 4psi at the torch (set your regulators 1-2 lbs higher to allow for pressure drop thought your welding hose.) You should always set pressure on regulators in a flow position (torch valve open) and not static (torch valves closed).
No. Flux is only required for welding aluminum and cast iron.
TIG rod is the purest and is commonly available at your local welding supply store.
Yes. The DHC2000 is ideal for cutting sheet steel greater than .010" thick. The low pressure and concentrated flame not only provides for a cleaner cut it also reduces the heat applied to the item being welded, thereby reducing warping of the metal.
Applications vary, but generally speaking you can cut commonly used mild steel up to 1" thick.
Yes, to a degree. We call it a melt cut. Using the right technique you can cut nonferrous materials up to 1/16" thick
When used properly and with care the cutting tip will last a very long time. As for plugging the cutting tip, this is commonly experienced when welding with conventional cutting torches because molten metal puddles on the surface of the item being cut. The design of the DHC2000 nearly eliminates the surface puddle, thereby reducing the likelihood of plugging the cutting tip.