2013年9月3日 · If a part has been cut off and you are reusing it there is very little 'old' weld there if it has been properly cleaned and prepped before the new work. At least, if done PROPERLY. …

2020年4月21日 · Read this article for a brief overview of welding history throughout the years. Welding can trace its historic development back to ancient times. The earliest examples of …

2023年8月22日 · Comparing old and new welding techniques offers insights into the craftsmanship, technology, and efficiency that shape our world. This article delves into this …

Welding can be traced back over thousands of years, with archaeological evidence dating back to around 3,000 B.C. in Egypt and the eastern Mediterranean. These earliest forms of welding …

2009年11月4日 · You can go over a weld for repair without changing the size using GTAW. You can go over for many other reasons with other processes. BUT, are you covering something up?

http://www.WcWelding.com This old welding training movie is actually pretty good. It mainly shows oxy-acetylene welding, spot welding, arc welding, as well a...

2024年1月12日 · Ancient civilizations, such as the Egyptians and Greeks, worked metal with the discovery of copper, bronze, silver, gold, and iron, then metalworking later progressed to …

Most other weld methods (Stick, TIG, MIG, Sub-src, etc) minimize this risk by shielding the weld area from contaminants, using fluxes that refine the contaminants out, having a slight natural …

2019年3月11日 · The 1980’s and ’90s turned welding from an art to a science by advancements in robotic welding, on-board computers, state-of-the-art electrodes and mixing multiple exotic …

2025年1月25日 · Welding is a method of repairing or creating metal structures by joining the pieces of metals or plastic through various fusion processes. Generally, heat is used to weld …