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Avoid Pitfalls When Purchasing Welding Equipment! A Roundup of Common Problems with Spot Welding Machines.
Views: 0 Author: Site Editor Publish Time: 2026-01-29 Origin: Site
Spot welders are among the most widely used joining machines in industry, yet many buyers still “step on mines” because they overlook equipment characteristics, process requirements or after-sales support. The result is higher cost, lower throughput and unstable weld quality. Below we list the four blind spots we see most often—so you can steer clear of them.
Wrong sizing: chasing kVA or chasing price
“Bigger current = stronger weld” is false. Over-powered units burn through sheet, create spatter and inflate energy bills.
Bargain-basement machines often lack stable inverters, accurate air systems or adequate cooling. They look cheap on day one but swallow money later through rework, electrode waste and unplanned downtime.
Buy for your real material, thickness, hit-rate and output—not for the biggest number on the name-plate or the lowest figure on the quotation.
Ignoring process match-ups: electrodes, fixtures and parameters matter just as much as the machine
Wrong electrode alloy/diameter → inconsistent nuggets or sticking.
Poor fixture design → shaky part position, unequal force, erratic current path.
Unbalanced current/time/force → undersized welds, splash, porosity or expulsion. Always run sample parts before you sign the PO. Prove that machine + electrode + fixture + program can hit the weld window your drawing demands.
Under-estimating service & maintenance: downtime, wear parts and obsolescence
Thin dealer network → slow field response and idle lines.
Scarce spares → extended waits for electrodes, thyristor packs or coolant pumps.
No operator training → electrodes never dressed, force never calibrated, coolant never checked, life cut in half.
Choose a brand with local spares, phone support and on-site training. Then write a daily check-list and a periodic maintenance schedule—and use them.
Take-away: buy what you understand, run what you can keep stable
Spot-welder procurement is not a price-tag or a brand-name contest; it is an engineering project that balances material, volume, machine capability and life-cycle support. Get all four right and you eliminate “buyer’s remorse”, secure consistent quality, raise throughput and extend asset life.
If you have welding machine requirements, please contact Ms. Zhao
Founded in 2006, PDKJ is a professional supplier of welding automation solutions. The company has passed the ISO9001 international quality management system certification, has more than 90 officially authorized and applied national patents, and a number of core technologies in the welding field fill the technical gap at home and abroad. It is a national high-tech enterprise.
