pripoi

pripoi pripoi – eto splavi, ispolzuemie dlya payki. payka primenyaetsya dlya germetizatsii ili sozdaniya elektricheskogo kontakta. na granitse rasplavlennogo pripoya i tverdogo metalla proisxodyat protsessi smachivaniya, rastekaniya, diffuzii, rastvoreniya metalla v pripoe. ot nix zavisit prochnost soedineniya. pripoi bivayut myagkie (temperatura plavleniya do 300 °s) i tverdie (temperatura plavleniya bolee 300 °s). tverdie pripoi primerno v 5–6 raz prochnee. naibolee rasprostraneni myagkie pripoi. sredi nix sn–pb-splavi, marki etix pripoev ot pos-10 do pos-90 s soderjaniem olova v nix ot 10 do 90 %. provodimost sn–pb-splavov sostavlyaet 9–15 % provodimosti medi. nekotorie sn–pb-pripoi soderjat surmu: naprimer, pos-61-05 (61 % sn, 38,5 % pb, 0,5 % sb), pos-8-3 (8 % sn, 89 % pb, 3 % sb), pr...

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