METHOD FOR LOW-TEMPERATURE CONSTRUCTION SOLDERING OF PRECISION ARTICLES OF NICKEL ALLOYS

摘要

FIELD: electrical engineering industry branches, instrument making, namely manufacture of precision articles. SUBSTANCE: method comprises steps of preliminarily treating soldered surface at temperature 85 -95 C for 5 - 10 s in mixture containing: acetic acid, 700 ml; nitrous acid, 300 ml; hydrochloric acid, 5 - 7 ml; then performing tinning and soldering while heating up at temperature 100 -120 C. EFFECT: enhanced quality of soldered joint due to improved moistening of flat complex-profile surfaces at simultaneously keeping accurate dimensions of articles. 1 ex