Babbitt preparation technology

Babbitt preparation technology - 2020 11 - 01 babbitt named invented by American babbitt, because of its quality, and the white is also called the white metal. Since 1893, babbitt as a kind of excellent bearing materials have been widely cognitive, and has been widely used in all kinds of industrial equipment. Babbitt as a kind of excellent anti-friction bearing material, usually through various methods should be adhesion to the substrate surface. The preparation technology are as follows: 1, the casting ( 1) Static casting casting used in static thrust, boards and other flat surface and sliding bearing, mainly including matrix of cleaning and hang tin, alloy melting, alloy of pouring and cooling process. （ 2) Centrifugal casting by centrifugal casting are specially designed equipment, through the rotation of the chassis, rotate the babbitt metal melt through the plate on the lateral holes into the preparation of good bearings, on the rotating at the same time, through the casing diameter clotting jet of air or water. 2, spraying method ( 1) Arc spraying, arc spraying is arc heat source, the molten metal wire with high-speed air atomization, and with high speed jet to the workpiece surface coating of a kind of process. （ 2) Liquid spray painting is to put the liquid babbitt high-speed jet to handle good substrate, in more than 105 k & bull; s - 1 under the cooling speed of solidification, formed the grain fine isometric, amorphous hybrid organization, hard point freely, the phase are scattered in the whole soft substrates. （ 3) Flame spray flame spraying process of babbitt spraying pretreatment for court - Preheat - The flame - spraying alloy powder After spraying processing. Flame spraying babbitt is mainly applied to a body or fission ( Upper and lower tile) Thin wall bearing shell, or high speed and heavy load bearing bearing repair for thick wall bearing shell and so on are not applicable. 3, coating method ( 1) Electroplating plating with babbitt is through chemical reaction in the electrolyte, deposits a layer of babbitt metal thin film on the surface of substrate material in the process. （ 2) Magnetron sputtering film prepared magnetron sputtering method have good film adhesion and film density is high, the composition of the advantages of easy control, process parameters include: target distance and target material composition, temperature, sputtering pressure and sputtering deposition time and so on. 4, welding welding babbitt is mainly used for repair of damaged babbitt bush, this method can improve the parts such as bearing bush repeated utilization ratio, and reduce the damage caused by babbitt bush loss money and time. （ This information from the Chinese steel news)