The Origin of Stainless Steel in Silica Sol Precision Casting

The Origin of Stainless Steel in Silica Sol Precision Casting

Nowadays, we can see stainless steel products everywhere, such as stainless steel tableware, stainless steel staircase handrails, stainless steel anti-theft windows, stainless steel pen holders... For families who are concerned about drinking water health, stainless steel water pipes can also be seen. Although stainless steel material has been widely used in various industries today, the historical origin of stainless steel is rarely known. Today, Tianyao Metal, a precision casting manufacturer of silica sol, shares with you the story of how Harry Bunore invented stainless steel.

In 1914, the First World War broke out, and Britain, France, and Germany engaged in fierce battles. At that time, Britain's steelmaking technology was poor, and the rifles and rifles used by British soldiers were prone to wear and tear. These firearms, which have been scrapped due to wear and tear on the barrel, require a significant cost to transport back to the rear and are very difficult to repair; But if we throw it away, it's too wasteful. Therefore, the British government has decided to develop a new wear-resistant gun barrel. This task was entrusted to the renowned British metal expert Harry Bunore. After receiving the task, Bunore immediately organized a research team to start the development of synthetic steel. The smelting and synthesis of metal materials is a difficult task. In order to complete the task as soon as possible, Bunore conducted research and development day and night. He added various chemical elements to the steel for testing, in order to find a more wear-resistant synthetic steel.

Quickly, some time passed, but there was no substantial progress in the development of Bunore. In the corner of the laboratory, various discarded steel materials piled up into a small hill.

"All the experiments failed! Why is this happening?" Bunore was lost in deep thought. Suddenly, he shook his head vigorously and said to himself, "No, we can't be discouraged, we can't say that the research and development work has not made progress, at least we have confirmed that many types of synthetic steel cannot be used as materials for manufacturing gun barrels." Bunore regained his confidence. He decided to clean up the laboratory for a new experiment. The members of the research team have all taken action. They decided to dispose of that pile of waste first. Everyone, move the rusty waste out one by one. Many people have great power, and in no time, a large section of the "small mountain" made of waste was cut off.

"Strange!" Suddenly, a researcher exclaimed, "Why is this alloy steel silver shiny and shiny, without any rust?"

"Let me take a look!" Bunore ran over at the sound. "It's really strange, why is it 'standing out alone'?"

After thinking for a moment, he said to the people around him, "Check its' household registration 'quickly." Everyone quickly moved out all the experimental records. After a lot of effort, they finally figured out the composition of this alloy steel. Originally, it was made of chromium alloy, but due to its insufficient hardness and susceptibility to wear and tear, Bunore eliminated it. "It does not rust, indicating that it is not easily corroded by air. So what is it easily corroded by?" Curious Bunore soaked it in acid, alkali, and salt solutions, and the results showed that it is not afraid of acid, alkali, or salt, and has a particularly strong corrosion resistance. At this moment, a member of the research team said, "Can we use its corrosion-resistant properties to make something out of it?" "Make it..." Suddenly, Bunore remembered the knives and forks at home that rusted before being used for a long time. "By the way, it's the most suitable way to make tableware with it!"

Of course, the research on gun materials is the primary task of Bunore, but in addition to his busy research work, he used the time when others were drinking coffee and sleeping to process the chrome alloy material into a fruit knife. This is the world's first stainless steel product! Everyone thinks this knife is very useful when cutting fruits. The most important thing is that after using it for a long time, this knife remains as shiny as new. Bunore's energy is even stronger! He also made stainless steel knives and forks, stainless steel spoons, and so on using chromium alloy materials, which were also popular among people and became popular items.

At the same time, Bunore also found alloy steel suitable for making gun barrels and successfully developed a new wear-resistant gun. Therefore, people praise Bounore as "both genuine and waste products are utilized, and both legitimate and sideline industries yield abundant harvests"!

Later, scientists discovered that in addition to adding an appropriate amount of chromium to alloy steel, a small amount of nickel, molybdenum, copper, manganese, etc. can also be added to alloy steel, making the produced stainless steel more resistant to rust; For example, the main difference between 304 stainless steel and 316 stainless steel is that 316 contains molybdenum, while 304 does not.

Precision machining