Silver brazing alloys will not flow over or bond to oxides. Oily or greasy surfaces repel fluxes, leaving bare spots which oxidize and result in voids and inclusions.
因为银钎焊合金并不会流过或粘接在氧化物上，而油污的表面及暴露的、容易氧化和导致空隙和杂物排斥焊剂。
The filler metals and fluxes suitabled for 2A50 aluminum alloy brazing were selected according to the feature of 2A50 aluminum alloy and the test of spreadability and clearance fillabitity.
针对2A50铝合金的特点，根据铺展性、填缝性试验，对适合其钎焊的钎料与钎剂作了选择，进行了接头强度试验。
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