No solder powder required; Good welding effect, low melting point; good Weldability and corrosion resistance, high thermal conductivity, high electrical conductivity;Wide range of uses, mainly used for welding bicycles, locomotive carriages, chemical containers, shipbuilding, etc.; Lightweight and easy to carry.Physically clean and polish the surface before use. Heat the surface of the base metal at the welding place until the temperature reaches the working temperature of the welding wire 380℃-400℃, so that the welding wire can be melted by the heat conduction of the base metal to form a weld. When enough, the welding wire can flow well and penetrate into the metal capillary.Three steps: When repairing thinner aluminum, just heat the aluminum base material to a suitable working temperature, and then use the welding wire to fuse it back and forth to form a weld. Only use a metal brush to fill the weld with the molten wire to form a weld.Note: The surface of the base material must be cleaned. Clean and weld; The temperature of the base metal must reach 400°C, including the temperature of the base metal during the welding process, and the temperature can be high or low; Avoid using flames to burn the welding wire deliberately. After the base metal temperature reaches 400℃, the welding wire will naturally melt by the heat conduction of the base metal.Product: Aluminum electrodesize:2.0x330mm / 1.6x330mmMaterial:aluminumcolour:SilverPackage Contents:30 * welding rodOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.