ã€China Aluminum Industry Network】 1. Natural properties Aluminum is a light metal. Its compounds are widely distributed in nature. The content of aluminum in the earth's crust is about 8% (by weight), second only to oxygen and silicon, and has the third place. Aluminum is called the second metal by the world. Its output and consumption are second only to steel. Aluminum has special chemical and physical properties. It is one of the more common industrial metals used today. It is not only light weight and strong in texture, but also has good ductility, conductivity, thermal conductivity, heat resistance, and nuclear radiation resistance. It is a national An important basic raw material for economic development.
The proportion of aluminum 2.7, the density is about 1/3 of the general metal. The common aluminum conductors have a conductivity of about 61% copper and a thermal conductivity half that of silver. Although pure aluminum is extremely soft and ductile, it is still cold-worked and alloyed to harden it. Bauxite is an important source of aluminum. It takes about two pounds of bauxite to produce one pound of alumina and two pounds of alumina to make one pound of metal aluminum.
Second, the classification of varieties According to the main components of aluminum ingot content can be divided into three categories: high-grade pure aluminum (aluminum content 99.93% -99.999%), industrial high-purity aluminum (aluminum content of 99.85% -99.90%), industrial pure aluminum (aluminum The content of 98.0% -99.7%).
Third, the main purpose of the past 50 years, aluminum has become one of the more widely used metals in the world. In the construction industry, aluminum is widely used due to its stability in the air and its excellent appearance after anodizing; aluminum alloy materials are also widely used in the aviation and defense military industry; high-strength steel wire is commonly used for power transmission. Strong aluminum cables; In addition, aluminum and aluminum alloys are widely used in automobile manufacturing, container transportation, daily necessities, household appliances, machinery and equipment.
KMP Komatsu Parts,KMP Komatsu Spare Parts,KMP Komatsu Undercarriage Parts,Quality KMP Komatsu Parts
JINING SHANTE SONGZHENG CONSTRUCTION MACHINERY CO.LTD , https://www.sdkomatsudozerparts.com