Marjorie Ruyle asked 2 สัปดาห์ ago
The figure changes with output. Turn the amperage down and the duty cycle climbs, because the internal components are working less hard. This is why a welder can feel completely different in a busy production environment compared with occasional home workshop use: someone welding continuously through a shift needs a much higher duty cycle at their working amperage than someone doing short repair jobs a few times a week. It’s the kind of spec worth comparing properly across brands such as Kemppi and EWM, not just reading off the headline amperage figure.
The practical difference comes down to what a machine can draw and sustain. A single-phase supply has a ceiling on how much continuous power it can deliver before tripping breakers or overloading domestic wiring, which is why the highest-output welding and cutting equipment is frequently three-phase only, or offers noticeably better duty cycle performance when run on three-phase. For workshops without an existing three-phase supply, bringing one in usually means an electrician and, in some cases, an application to the local distribution network operator.
The collet and collet body hold the tungsten in place and need to match its diameter exactly. A worn or incorrectly sized collet allows the tungsten to shift slightly during welding, which affects arc stability in ways that are easy to blame on technique when the actual cause is a consumable that needs replacing. CK Worldwide and Furick are two of the ranges we stock here, and these are inexpensive parts, but neglected ones cause a disproportionate amount of frustration at the torch.
MIG (metal inert gas) welding feeds a continuous wire electrode through a gun, shielded by a gas supply, which makes it fast and relatively forgiving for general fabrication, sheet steel and repair work. Jasic’s MIG range is one of the more popular starting points here, covering entry-level compact units through to higher-output machines as work scales up. TIG welding equipment (tungsten inert gas) uses a non-consumable tungsten electrode with a separate filler rod, giving a slower but tidier result that’s favoured for thinner materials, aluminium and stainless steel where finish quality matters. MMA, or stick welding, strikes an arc from a flux-coated electrode and needs no shielding gas at all, which makes it the most portable option and a common choice for outdoor or on-site work on thicker steel.
Every workshop is different, so rather than relying on general advice, it’s worth getting your own set-up properly assessed. A system that works well for one shop can be quite wrong for another with different ventilation, floor space or process mix, and an on-torch extraction option, such as those available for Fronius torches, suits a different layout to a fixed overhead hood.
An auto-darkening welding helmet uses a liquid crystal filter that switches automatically from a light state to a dark shade the instant it detects an arc, then reverts once the arc is gone. This replaces the older habit of flipping a fixed-shade visor down and up by hand, which meant either welding blind for a split second or lifting the helmet to check your position before striking the arc. 3M Speedglas is one of the ranges we point people towards most often for this, alongside other options across different budgets.