Welders have fused metals for thousands of years across continents, such as bronze, iron, copper, silver, and gold. Welding is the original method of fusing metals to produce weapons, utensils, jewellery, transportation mediums, and more.
The invention of metal fusing helped develop civilizations, but it wasn’t always as refined, robust, or safe as it is today. Here’s a brief history of metal fusion throughout the ages, which led to modern-day welding techniques used globally.
A History of Welding’s Evolution
The Bronze and Iron Ages
Evidence of fusing metals dates as far back as 3000 BC – a time when people first used bronze. Archeologists have discovered weapons, jewellery, and cutlery from this period, while the oldest known welding examples are small golden boxes from the Bronze Age (over 2,000 years ago).
Around 3000 BC, the ancient Egyptians employed charcoal to pressure-weld weapons like swords. By the time 1500 BC came along, iron smelting was widespread. As time progressed, metalwork eventually advanced to steel welding.
Later, in 589 AD, during the Sui Dynasty, Chinese metalworkers began turning iron into steel, while the Japanese developed Samurai swords by forging steel and welding roughly around the same period.
The Middle Ages
Metalworkers developed blacksmithing during the Middle Ages when iron became available for welding metal materials. This period saw revolutionary advancements in forge welding, a practice still used by modern-day blacksmiths when forging items such as knives and swords.
Blacksmiths were sought-after individuals in the Middle Ages; most villages had at least one blacksmith shop where these historic tradesmen forge-welded armour and weapons, as well as everyday tools and items, from furniture and locks to nails and horseshoes.
The 19th and 20th Centuries
Modern welding techniques were released in the Industrial Revolution. In 1800, chemist Sir Humphry Davy produced an arc between two carbon electrodes with a battery. Two years later, in 1802, Russian scientist Vasily Petrov developed the first stable electric arc, enabling metalworkers to melt metals.
Fast forward to 1836, Davy’s cousin, Edmund Davy, was credited with discovering acetylene. In the mid-19th century, their work led to the electric generator, gas welding, and cutting processes, and improved and more stable arc welding.
World War I saw a significant boost in welding, leading to weapons and transportation developments around the world. In particular, arc welding was commonplace in shipbuilding and aircraft fabrication in Germany and England.
In 1920, automatic welding appeared – a process that feeds a continuous electrode wire through the welding machinery. The 1900s also saw the introduction of new welding gases, which were intended to protect welds from nitrogen and oxygen in the atmosphere (thereby preventing rust and weakened welds).
Into the mid-19th century, other new welding techniques were introduced, including underwater and stud welding, among others. From 1941, gas tungsten arc welding had become much safer and thus more common, enabling metalworkers to fuse different nonferrous metals.
Modern Welding
Today, contemporary welding is highly accurate, fast, more sustainable, and (more importantly) safer, thanks to thousands of years of development. Additionally, modern inspections have enhanced safety and craftsmanship standards, not only improving defects in welding products but also welding safety.
Over 90 welding processes are used today, from laser and electrode welding to MIG and TIG welding (and many more), all of which are constantly undergoing development and refinement due to research into various industries, such as the transportation, shipbuilding, aviation, space, and nuclear sectors.
In the United States, the American Welding Society (AWS) sets today’s welding standards and offers industry certification.
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