
MFDC vs. AC Resistance Welding: How to Compare the Processes
A practical comparison of MFDC and conventional AC resistance welding for buyers evaluating current control, transformer size, utilities and application fit.
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A practical comparison of MFDC and conventional AC resistance welding for buyers evaluating current control, transformer size, utilities and application fit.
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A specification checklist for matching a resistance spot welder to material, thickness, joint access, electrode force, utilities and production rate.
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Understand how electrode material, face geometry, cooling, alignment and maintenance influence resistance welding access and consistency.
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Learn how wheel electrodes form overlapping resistance welds and what to specify for longitudinal, circumferential and sealed seam projects.
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Compare resistance butt and flash butt welding for wire, rod, tube and profile joints by heating method, clamping, upset and finishing needs.
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A project-definition checklist covering workpiece data, weld process, cycle time, handling, tooling, inspection, safety and acceptance.
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Tool steel generally includes medium and low carbon steel tool steel, alloy steel and high-speed steel. In the high temperature of resistance brazing, their structure and properties are prone to problems of annealing, oxidation and decarburization.
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Brass is a copper-zinc alloy. Zinc oxide and cuprous oxide are easily generated on the surface during resistance brazing at high temperatures. Although zinc oxide is relatively firmly bonded, it is relatively easy to remove with flux, so it does not affect the weldability.
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Pure copper easily produces copper oxide and cuprous oxide during resistance brazing, but they are not difficult to remove with flux, so the weldability is good.
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