1. What is Welding Duty Cycle?

The welding duty cycle represents the percentage of time a welding machine can operate at a given output current without overheating during a specific time period (typically 10 minutes).

2. How Does the Calculator Work?

The calculator uses the duty cycle equation:

Where:

• \( \text{Arc Time} \) — Actual welding time (seconds)
• \( \text{Total Time} \) — Total observation period (seconds)

Explanation: The equation calculates what percentage of the total time period the welding machine was actively arcing.

3. Importance of Duty Cycle Calculation

Details: Proper duty cycle calculation helps prevent welder overheating, ensures equipment longevity, and maintains welding quality by avoiding excessive thermal stress.

4. Using the Calculator

Tips: Enter arc time (actual welding time) and total time (observation period) in seconds. Both values must be positive numbers, and arc time cannot exceed total time.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical duty cycle for welding machines?
A: Industrial machines often have 60-100% duty cycles, while hobbyist machines may have 20-40% at rated output.

Q2: How does duty cycle relate to amperage?
A: Duty cycle ratings are specific to current levels - higher currents typically reduce the allowable duty cycle.

Q3: What happens if I exceed the duty cycle?
A: The welder may overheat, potentially triggering thermal protection or causing component damage with repeated overuse.

Q4: Is duty cycle measured over 10 minutes for all machines?
A: While 10 minutes is standard, always check manufacturer specifications as some may use different time bases.

Q5: How can I increase my effective duty cycle?
A: Use lower amperage settings, ensure proper cooling, or alternate between multiple machines for continuous work.