Babbitt, gemischt mit Letternmetall, Schlacke

Babbitt metal Chemische Eigenschaften,Einsatz,Produktion Methoden

• Definition

  One of a group of soft alloys used widely for bearings. They have good bonding characteristics with the substrate metal, maintain oil films on their surfaces, and are nonseizing and antifriction. Used as cast, machined, or preformed bimetallic bearings in the form of a thin coating on a steel base; the main types are lead base, lead-silver base, tin base, cadmium base, and arsenical. The latter contains up to 3% arsenic.

• Hazard

  Dust is toxic by inhalation.

• Industrielle Verwendung

  Babbitt metal is the original name for tin–antimony–copper(Sn–Sb–Cu) white alloys used for machinerybearings, the term now applies to almost anywhite bearing alloy with either tin or lead (Pb)base. As a general-utility bearingmetal, the original alloy has never beenimproved greatly, and makers frequently designatethe tin-base alloys close to this compositionas genuine babbitt.Commercial white bearing metals nowknown as babbitt are of three general classes:tin-base, with more than 50% tin hardened withantimony and copper, and used for heavy-dutyservice; intermediate, with 20 to 50% tin, withlower compressive strength and more sluggishbehavior as a bearing; and lead-base, made usuallywith antimonial lead with smaller amountsof tin together with other elements to hold thelead in solution.