The main purpose of aluminum
In 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 because of its stability in the air and its excellent appearance after anodizing; a large number of aluminum alloy materials are also 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.
Aluminum Market Distribution and Features
The raw material for production of aluminum ingots is bauxite. The total amount of bauxite resources in the world is approximately 40-50 billion tons. Countries with reserves of over 1 billion tons include Guinea, Australia, Brazil, Jamaica and India. The earth mine accounts for 73% of the world's total bauxite reserves. The United States, the former Soviet Union, Canada, Australia, Brazil, Norway and other countries where the production of aluminum is mainly concentrated have no more than 60% of the total output. In addition to new aluminum, the aluminum supply source also accounts for a high proportion of recycled aluminum. The recycled aluminum is divided into two types of old materials (the main source is the beverage cans and automotive waste) and the new material is recovered (the waste during processing). . In the past three years, the global output of primary aluminum has increased by about 1 million tons per year. In 1998, the total output was 22.6 million tons. In 1999, the total output was 23.6 million tons. The annual increase in global aluminum consumption is only 100,000 tons, which is much lower than the growth rate of aluminum production. The United States is the world’s largest producer of aluminum and a consumer. Due to its limited reserves of bauxite in the country, it needs to import a large amount of raw materials each year. China's output and consumption rank third.
Associated Standard Gb/t [1] . 1-2009 technical requirements for cold rolled cylindrical helical springs-part 1: Tension Springs; GB/T2087-2001 cylindrical helical spring dimensions and parameters: Gb/t 2008-1997, etc. . Design parameters specify material diameter (d) , outer diameter (D) , total length (Ho) , number of working rings (N) , location and shape of earrings, the load (P 1P 2... ... P I) and the corresponding value (H 1h 2... Hj) such as (figure 2) should be marked with Po if there is initial tension such as (figure 2) : features many different terminal devices or [Hooks"are used to ensure the tension source of the tension spring. A tension spring works in opposition to a Compression Spring. Compression Springs Act in the opposite direction when pressed, and tension springs act in the opposite direction when stretched or pulled apart. When the ends of the tension spring are pulled apart, the spring tries to pull them back together. Like compression springs, tension springs also absorb and store energy. But unlike compression springs, most tension springs are usually under a certain amount of tension, even without any load. This initial tension determines how tightly the tension spring is wound without any load. Application of medical respiratory equipment, motion control, medical mobile equipment, hand tools, home care equipment, shock absorption, pump springs, mechanical and electronic protection hardware, fluid control valves, mechanical aerospace components, actuators, switching equipment. Tension Springs, also known as helical tension springs, are generally of equal pitch and usually have a circular cross-section. They can be used in many situations, such as Production Assembly, Experiment, R & D, Maintenance and so on. The tension spring occupies an important position in the global market, widely used in national defense, marine, computer, electronics, automobile, mold, medicine, biochemistry, aerospace, railway, nuclear power, wind power, thermal power, engineering machinery, mining machinery, construction machinery, elevators and other fields.
Tension Helical Spring,Small Tension Springs,Helical Extension Spring,Tension Coil Spring
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