The nickel tube is used in alkali industry, chlor alkali chemical industry, the production of organic chloride, food processing, high temperature halogen and salt corrosion environment, electronic instrument parts, water treatment and various alkali resistant equipment.
It is shown that by the relevant data in 2005 Chinese nickel production reached 91.4 thousand tons, in the first quarter of 2006, the amount of nickel ore in our country reached 26 thousand tons. Chinese nickel production has been unable to meet the needs of domestic production, in recent years, the import quantum of nickel has been far more than the export quantum of nickle in China.
As a kind of rare metal, nickle can be well welded, but in the process of welding, with the increase of temperature, its performance start to change, the ability of absorbing nitrogen, hydrogen, oxygen increased, the pollution of gas impurities easily lead to the embrittlement of welded joints.
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