Introduction of pure nickel wire and nickel mesh
Time：
2024-10-18
1.Pure nickel wire
1.1 Introduction
Pure nickel wire is mainly used to manufacture electron tube cathode, anode grid side rod, tube needle, etc. It has good mechanical properties and corrosion resistance to alkalis, such as sodium hydroxide. It also has better electrical, thermal and magnetic controllability characteristics. Applications include food and synthetic fibre processing, heat exchangers and the chemical and power industries. Typical manufacturing resistance thermometers, internal parts of the tube, such as grid side rods, struts and external parts of the tube, such as lead wires.
At room temperature, a dense oxide film is formed on the surface of the nickel wire in humid air, which can prevent the substrate metal from continuing to oxidize. The corrosion of nickel wire by hydrochloric acid, sulfuric acid and alkaline solution is very slow. Nickel wire dissolves slowly in dilute nitric acid. Strong nitric acid can passivate the surface of nickel wire and have corrosion resistance. Nickel wire is widely used in chemical chlor-alkali and other industries that require acid and alkali resistance. Existing production process of pure nickel wire: At present, the domestic production of pure nickel wire mainly adopts vacuum induction melting → ingot peeling → forging → grinding → rolling → drawing.
1.2 Application
Widely used in the manufacture of ion-exchange membrane electrolyzer electrodes, with good corrosion resistance.
Metallurgical machinery is used for sieving and filtration under acid and alkali environment conditions; sieve filter in chemical and chemical fiber industry; pickling mesh in electroplating industry; battery collector mesh, etc.
1.3 Specifications wire diameter: 0.02mm-6.00mm.
1.4 Grade
There are two types of nickel wire in China: N4 and N6. The purity of N4 nickel wire is 99.8% and above. The purity of nickel wire of N6 is more than 99.6%.
2.Nickel Mesh
2.1 Introduction
It is mainly used for sieving and separation of gas, liquid filtration and other media under acid and alkali environment conditions. The use of nickel mesh: nickel wire is woven into various specifications of mesh, cloth, with good acid resistance, alkali resistance, and other properties. It can be used as electrolytic hydrogen production, sintering and shielding of electronic components, and has very good effects. Mainly used in petroleum, chemical, chemical fiber, rubber wheel manufacturing, metallurgy, medicine, food and other industries.
2.2 Weaving of nickel mesh: plain weave twill weave. The specification of nickel mesh is 1-400 mesh.
2.3 Commonly used materials for nickel mesh: N4/N6. The nickel accounts for more than 95%.
2.4 Characteristics of nickel mesh: Nickel has good mechanical strength and ductility. Intolerant of water, strong anti-corrosion ability to acids and alkalis. Nickel mesh has good plasticity and corrosion resistance.
2.5 Melting point: 1455 degrees.
2.6 Density: 8.902g/cm3.
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Introduction of pure nickel wire and nickel mesh
Pure nickel wire is mainly used to manufacture electron tube cathode, anode grid side rod, tube needle, etc. It has good mechanical properties and corrosion resistance to alkalis, such as sodium hydroxide. It also has better electrical, thermal and magnetic controllability characteristics. Applications include food and synthetic fibre processing, heat exchangers and the chemical and power industries. Typical manufacturing resistance thermometers, internal parts of the tube, such as grid side rods, struts and external parts of the tube, such as lead wires.
Features and Principles of Vacuum Induction Furnace
With the rapid development of my country in the fields of high-speed rail, nuclear power, petroleum and petrochemical, aerospace and other fields, higher and higher requirements are put forward for steel materials: higher strength, harsher corrosion resistance, high temperature resistance, and stronger fatigue resistance etc., and vacuum induction melting technology is an important guarantee for the production of high-end special steel. Among many special heating or melting methods, induction heating technology is used to smelt and prepare metal materials, and it can accurately control gases, non-metallic inclusions and trace harmful substances in steel. The level of impurities plays a crucial role. This paper introduces the development process of induction furnace and vacuum induction melting technology, as well as the application of induction melting technology in different occasions. According to the structure of different vacuum induction furnace types, compare their advantages and disadvantages. Looking forward to the future development direction of vacuum induction furnace, and expounding its development trend. The development and progress of vacuum induction furnaces are mainly reflected in the gradual improvement of the overall structure of the equipment, the increasingly obvious trend of large-scale equipment, and a more intelligent control system.
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