Pure aluminum welding wire is a soft material with relatively poor column strength and is sensitive to hydrogen solubility during melting. Therefore, its success in the production environment largely depends on the method used in the production process. And whether the control methods are reasonable or not. The surface finish, the cleanliness of the welding wire, the degree of control of the diameter of the welding wire, and the pitch and spiral of the welding wire have a greater impact on the performance of the MIG aluminum welding wire.
Pure aluminum welding wire
Welding characteristics of aluminum pipes: Aluminum and aluminum alloys have the characteristics of strong thermal conductivity, large heat capacity, large linear expansion coefficient, low melting point and low high temperature strength. The welding is difficult, and certain measures should be taken to ensure the welding quality. So here I will introduce the correct welding method of aluminum.
Tools/Materials 1. Non-metallic liner 2. U-groove drive roller 3. Inlet and outlet guide device 4. Contact head
Steps/Methods
First of all, it is strongly recommended to purchase a set of special aluminum wire feeding tools, a set of tools will contain the following items:
- 1. U-groove drive roller-used to prevent the soft aluminum wire from breaking or deforming. These drive rollers will not scratch the aluminum wire like V-groove rollers. If the V-groove roller is used, the welding wire will scratch the liner and cause blockage, causing wire feeding failure.
- 2. Non-metallic liner-designed to reduce wire feeding friction to a greater extent
- 3. Inlet and outlet guide devices-designed to avoid wire scratches.
- 4. Contact head-the contact head used in aluminum welding has a larger diameter opening, because when the aluminum wire heats up, it expands more than steel. Therefore, the size of the special contact head for aluminum wire is small enough to maintain electrical contact while being large enough to allow expansion.
