In the era of cold weapons, the manufacture of armor and weapons is often accompanied by the glory of a civilization and era. The forging technology of iron and steel is the pinnacle of this era, and the ancient famous sword, pure jun sword, unearthed in 1965 in Jingzhou, Hubei Province, China, is revered as one of the pinnacles of sword casting in the Spring and Autumn Period. Although there are no historical records to verify, as the sword of the ancient yue king who is famous for thousands of years, there is no need to say more about where its cattle are broken.
At least, just after the excavation, it was said that the cold was compelling, there was no rust at all, and it was used to scratch paper, and a sword could break through more than 20 layers. At that time, the bronze casting process still amazed modern craftsmen.
However, on the use of alloy technology, other metal materials, a small amount of silicon, aluminum, and multiple heating folding forging techniques are added to the harder iron swords. In ancient India and the Middle East, there is still a little more! In particular, the stainless steel industry has been believed to date back to the early 19th century. At that time, people began to pay attention to the use of iron-chromium alloys to strengthen the corrosion of certain acids.
But recent studies have shown that more than 1,000 years ago, in what is now Iran, that is, in ancient Persia, was about the 11th century. Skilled craftsmen have already used these techniques to create a material called chrome steel and apply it to cold weapons. For example, a dagger or a sword, mixed with a little chrome, can make the weapon harder and more resilient.
Cambridge University archaeologist Marcos Martinon Torres, who specialized in a small village called Hack, is now inconspicuous. But in ancient Persian times, it was famous, and the source of many ancient manuscripts pointed to this place. As a steelmaking center in its heyday, it has retained many historical traces. For example, a mysterious compound, a charred soil, is actually a kind of chromite sand. Using radiocarbon dating, as well as scanning electron microscopy, the team was able to identify its long age. At the same time, it was also found that in about the 10th to 12th centuries, in the process of metal manufacturing, there were also a small amount of chromite in a lot of waste charcoal.
And more Persia
earthenware
crucible
Steel tools and weapons are still displayed in museums around the world, so that people around the world feel that the ancients have long been very clever to find out, mix various alloy materials together, and then forge more lethal and market-valuable materials and utensils.
The Cambridge University research team eventually passed some crucibles
Steel products, and in them to find the various elements of stainless steel, and traced back to their production centers or methods, finally confirmed that they are far earlier than we thought, a full 1,000 years earlier!