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Gao Fenglin: The Rocket's Heart Welder
2025-09-12

Gao Fenglin - special fusion welder and senior technician at Capital Aerospace Machinery Company of the First Academy of China Aerospace Science and Technology Corporation.

The Art of Life and Death in 0.01 Seconds: The Ultimate Mastery of Thin-Wall Welding

The wall of a rocket fuel delivery pipe is just 0.08 mm thickequivalent to the diameter of a human hair. If the welding torch remains on for just 0.01 second longer, the pipe wall will be burned through, triggering a devastating explosion. Gao Fenglin, relying on "muscle memory," has mastered microsecond-level precision control, performing tens of thousands of operations with zero error, enabling the Shenzhou spacecraft to launch, the Beidou satellite network to form, and the Chang'e satellite to land on the moon. To push the boundaries, he simulates wire feeding with chopsticks while eating, practices stability by holding a water cup, and exercises endurance by lifting iron blocks. Ten years of painstaking effort culminated in a single moment.

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29% 92%: A Remarkable Reversal in the Qualification Rate of Core Components

The pre-pump assembly, the core of the rocket's "heart," once held back China's space program for 20 years due to a mere 29% qualification rate (less than three qualified parts per year). Gao Fenglin led his team through tens of thousands of cold, spot, and hot machining experiments, pushing the limits of 30 finishing processes, ultimately raising the qualification rate to 92%, propelling China's space program into an era of intensive launches.

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Rejecting a Million Euro Offer: Believing in the Glory of Spaceflight

A European aerospace company once offered him a million-dollar annual salary plus housing, but he responded calmly, "How can money compare to the glory of launching a satellite into space?" Over the past 37 years, he has welded the "cores" of over 90 rockets (accounting for 40% of China's total rocket production), saving over 35 million yuan in losses.

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"The welding gun is my pen, the rocket is my scroll, and every weld is writing the dignity of China's space program." - Gao Fenglin tamed the soul of steel with his flesh and blood, making "impossible" a footnote to "China can."

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