No Need Solder Powder: You don't need to use other powder fluxes with aluminum alloy as the welding core and coating as the salt base. Application: This kind of low temperature aluminum welding wire can weld almost all white metals, including aluminum, aluminum alloy, cast aluminum, aluminum magnesium alloy and so on. Effect: With full and smooth welding effect due to the internal powder. With a low melting point, high weldability and corrosion resistance, high thermal conductivity, high electrical conductivity, and excellent processing performance. Instructions: Step 1: Polish the surface by physical cleaning. Step 2: Heat the surface of the base metal until the temperature reaches the working temperature of the solder wire of 450°C or higher, so that the weld can be formed by the heat conduction solder wire of the base metal, and the flame solder wire should not be used, and only when the surface temperature is sufficient, the wire can flow and penetrate well. Step 3: When repairing relatively thin aluminum, simply heat the aluminum to a suitable working temperature, and then use a wire and a wire brush to rub back and forth to form a weld. Caution: The surface must be cleaned. The temperature of the base metal must be maintained at 450°C during the welding process, and the temperature cannot be lower. Avoid using flames to deliberately burn the wire. Once the temperature reaches 450°C, the wire will naturally depend on the thermal conductivity of the base material. Contents: 33cm x 1.6mm - 10pcs. Note: This does not include other things. The color is based on the first picture, and the other pictures only show the effect. Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!becomeveryrich