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本焊剂由氯化锂l4％,氯化钾50％、氯化钠28％、氟化钠8％组成。熔点约560℃,呈碱性反应,能有效地破坏氧化铝膜,焊时呈液态熔渣覆盖于金属表面,保护熔池金属不被氧化。反应如下: 6LiCl+AI_2O_3→2AlCl_3+3Li_2O 6KCl+Al_2O_3→2AlCl_3+3K_2O 6NaCl十Al_2O_3→2AJCl_3+3Na_2O 6NaF+Al_2O_3→2AlF_3+3Na_2O 铝气焊时采用焊剂主要是要清除氧化铝(Al_2O_3)氧化铝熔点比纯铝还高,达2050℃,比重大(铝比重为2.7克/厘米_3,氧化铝比重为3.9克/厘
The flux from l4% lithium chloride, potassium chloride 50%, 28% sodium chloride, 8% sodium fluoride composition. Melting point of about 560 ℃, showed a basic reaction, can effectively destroy the aluminum oxide film, was deposited on the molten metal slag covering the metal surface, to protect the molten pool metal is not oxidized. The reaction is as follows: 6LiCl + AI_2O_3 → 2AlCl_3 + 3Li_2O 6KCl + Al_2O_3 → 2AlCl_3 + 3K_2O 6NaCl + Al_2O_3 → 2AJCl_3 + 3Na_2O 6NaF + Al_2O_3 → 2AlF_3 + 3Na_2O Aluminum flux welding is mainly used to remove aluminum oxide (Al 2 O 3) alumina melting point than the pure Aluminum is also high, up to 2050 ℃, the proportion of large (2.7 g / cm3 aluminum proportion, the proportion of alumina 3.9 g /