Leadless environmental-protection oxidation-resistance welding flux and the preparation technics thereof
An anti-oxidation and environmentally friendly technology, applied in manufacturing tools, welding equipment, welding/cutting media/materials, etc., can solve the problems of poor anti-oxidation performance, poor solder joint smoothness, and poor solderability, and achieve improved anti-oxidation performance. Effect
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[0007] Example 1: 7 g of copper (Cu), 1 g of scandium (Sc), 0.3 g of phosphorus (P), and other impurities with a content of tin (Sn) and not more than 0.1 g. First put phosphorus and tin into the reaction furnace at a ratio of 100:1, and make a tin-phosphorus alloy under the conditions of 800 ° C and 2.0 MPa, and then calculate the obtained alloy according to the proportion of phosphorus required in Example 1 and other metals in Fusion in the reaction furnace under normal temperature and pressure conditions.
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[0008] Example 2: 7g copper (Cu), 0.5g scandium (Sc), 0.5g phosphorus (P), other contents of tin (Sn) and impurities not greater than 0.1g. Same as above
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[0009] Example 3: 7 g of copper (Cu), 2 g of scandium (Sc), 1 g of phosphorus (P), and other impurities with a content of tin (Sn) and not more than 0.1 g. Same as above
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