Product Overview/产品概述:
In 1804, after metal nickel was refined from the ore, nickel did not develop significantly for about 100 years due to the limitations of the technical conditions and lack of resources at the time. Until the eve of World War I, world nickel production was only a few thousand tons. After the first world war, especially after World War II, nickel production increased dramatically.
In 1865, Garnier added gypsum and coal to smelt nickel ore for reduction and smelting. After reduction, nickel mirror was obtained, thus enriching the small amount of nickel in the original ore. After burning off the sulfur, the resulting nickel oxide is reduced to nickel using carbon in the solid state.
Product Introduction/产品介绍:
Nickel can be completely dissolved in r-iron, and its solubility in a-iron is 10%. A nickel content of 5% can improve the tensile strength and hardness of low-carbon structural steel. A 3% nickel content in carbon steel can improve its tensile strength, impact toughness, yield point and deformation capacity. NiCrMo structural steel containing 1% to 4% nickel is very suitable for use in automobile, locomotive and machinery manufacturing industries because of its appropriate tensile strength to mass ratio. In addition to these elements, wear-resistant components also contain carbon. Important nickel-containing steel grades and users are stainless steel and heat-resistant special steel. For example, a series of heat-resistant stainless steels such as Cr18Ni9Ti and Cr17Ni1iMn2 have good hot working properties and are widely used in machinery, medical treatment, national defense and light industry. Nickel has a slight graphitization effect in cast iron. It can stabilize pearlite and reduce the ferrite content. Therefore, nickel in cast iron helps to achieve a uniform and integrated structure and good performance. Adding a small amount of nickel (Ni0.%～1.0%) will lead to the formation of fine pearlite. When the nickel content is high, martensite and austenite will be formed. Fine and stable pearlite can make cast iron have good processing properties and hardness. Therefore, nickel-added cast iron parts can be used to manufacture castings in the automotive industry.
Low iron-nickel alloys containing chromium, cobalt and aluminum are generally called Hastelloy corrosion-resistant nickel-based alloys when used as high-temperature alloys. The tensile strength at 923°C is as high as 233.24MPa. Iron-nickel alloys containing 30% to 90% Ni have high magnetic permeability and are therefore suitable for the electrical and electronic industries, such as the Clemax alloy containing 30% Ni and 70% Fe. The alloy containing 80% Ni, 14% Cr and 6% Fe is a special corrosion-resistant spring material used in dental treatment. Nickel is also used to make coins and in the battery industry.
