Long-term outlook for rolled bands
In creating new materials with preprogrammed properties it is necessary to use extensively the achievements of modern science in its different fields: theoretical physics, thermodynamics of chemical reactions, composite materials, advanced research methods, applied informatics, computer-aided design, modeling, etc. There has to be chosen a completely new approach to the development of a new complex composition (new material) following the algorithm: “components of material – preprogrammed properties - new material”.
With such approach the technology is a constituent element of the general project, while selection criterion represents a set of parameters both at the stage of developing materials with preprogrammed properties with respect to physical-mechanical characteristics, energetics, durability, operating conditions, utililzation, etc. and at the stage of setting up the industrial manufacturing process – low power inputs, wastelessness, ecological compatibility, etc
|Monometallic rolled stock, used previously||New multilayered materials with preprogrammed properties, used as a replacement for monometals|
|Brass rolled product Ë63||Multilayered band brass Ë63-steel-brass Ë63(LIL)|
|Brass rolled product Ë68||Multilayered band brass Ë68-steel-brass Ë68(LIL)|
|Brass rolled product Ë90||Multilayered band brass Ë68-steel-brass Ë90(LIL)|
|Copper rolled product Ì1||Multilayered band copper Ì1-steel-copper Ì1(CIC)|
|Nickel rolled product ÍÏ2, ÍÏ0Ý,ÍÏ1||Multilayered band nickel ÍÏ2-steel-nickel ÍÏ2 (NIN)|
|Aluminum rolled product Copper rolled product||Bimetallic band aluminum-copper (RAC)|
|Steel rolled product 08ÏÑ||Multilayered band aluminum-steel-aluminum (AIA)|
|Steel rolled product 08ÏÑ, that of nickel ÍÏ2||Bimetallic band aluminum-nickel (AN)|
|Copper, aluminum rolled product||Bimetallic band copper-aluminum (CA)|
|Rolled product 29ÍÊ||Bimetallic wire Kovar-copper (KC)|
Multilayered composite materials – bands and wire find widely application in chemical, electrical, machine building, food and other industries, as well as in jewelry manufacturing and in medicine. Bimetals and Multilayered clad materials appeal to customers not only on account of their durability, but also due to their high physical-chemical properties as a whole. Base of the most bimetal products is made from low-carbon steels (GOST steel grades 08êï, 08ïñ, 08þ, 10êï, 11êï , etc.) clad (covered) by nonferrous metals and their alloys (aluminum, copper, brass, bronze, nickel, etc.). The cladding thickness is usually 3 - 50% of total thickness. Service properties of such bimetals change in the wide range.
The BIB band (brass-iron-brass) is utilized in electronic engineering (output circuit boards, electrical connections, etc.)
The CIC band (copper-iron-copper) is used in precision machinery industry (drawing gear), electrical industry (electric contacts, protective devices), electronic engineering (output circuit boards, electrical contacts, etc.)
The NIN bands (nickel-iron-nickel) and CIN (copper-iron-nickel) are employed in electrical industry (current-carrying basis of electrodes, chemical current source casings, etc.), in precision machinery industry.
Bimetallic copper-aluminum band is used in manufacture of conductive connection units, electrocontact tips, electric apparatus connection clamps, blade type power isolators, connections of current-carrying wires, bimetallic contacts in electrolysis related productions, etc.
Aluminum-copper bimetal combines high electrotechnical and strength properties with minimal utilization of costly and scarce materials, the aluminum-copper products are able to operate at elevated temperatures and have high wear resistance of contacting surfaces.
The AIA bands (aluminum-iron-aluminum) and AN (aluminum-nickel) bands are used in electrovacuum industry in electron valves as a replacement of nickel, they are also utilized in manufacturing thermocouple tubes, primus stove bodies and other items. In automotive industry AIA bands are used in manufacturing clamping collars and couplings for hose connections and for the piping of cooling systems, in fabricating fitting pieces, cylinder heads, heat filters, reflectors.
Copper-kovar wires are used in fabricating output leads for powerful transistors.