Summarize the knowledge on a small iron and steel: Iron is the most abundant and inexpensive earth metal elements, almost all of the indispensable basis for industrial material, its products widely used variety, there is no iron and steel would not have modern society, people's livelihood can not be day without it.
The use of iron and steel products can be seen everywhere, from the home refrigerator, kitchen utensils, washing machines, transport steam locomotives, railway, trams, iron bridges, ships, power transmission tower, home building, factory farm room, machinery are; iron and steel products are made of iron ore extraction, processing made by the various uses of the products, cutting its processing goods or used goods into the old scrap that can be recycled an infinite number of times to use, it will not pollute the environment as a very convenient recycling of materials.
The use of iron and steel products can be seen everywhere, from the home refrigerator, kitchen utensils, washing machines, transport steam locomotives, railway, trams, iron bridges, ships, power transmission tower, home building, factory farm room, machinery are; iron and steel products are made of iron ore extraction, processing made by the various uses of the products, cutting its processing goods or used goods into the old scrap that can be recycled an infinite number of times to use, it will not pollute the environment as a very convenient recycling of materials.
The dissolved iron and steel cast models, can be rolling into a rod, plate, tubular products for various purposes, easy to mass production process can also add a very small amount of other substances can change the properties of the materials heat-treated to increase hardness or to improve the physical properties of iron purity so that softening, can also be used temperature control to achieve high-temperature quenching or slow cooling to harden physical properties or soft; The only drawback is that it will rust, iron and steel products in order to avoid oxygen contact with the air oxidation of rust coating materials are generally used, galvanized and so on, or added when melting nickel, chromium and made of stainless steel.
Steel chain system, the process will produce a slag by-product, and then by processing can replace the natural quarry, as a building material, road base material, because a large number of calcium-containing ingredients made from fish and reef conducive to algae production, beneficial to marine fish, gathering in Japan has been studied extensively used.
Steel chain system, the process will produce a slag by-product, and then by processing can replace the natural quarry, as a building material, road base material, because a large number of calcium-containing ingredients made from fish and reef conducive to algae production, beneficial to marine fish, gathering in Japan has been studied extensively used.
