How To Weld Aluminum

Table of contents:

How To Weld Aluminum
How To Weld Aluminum

Video: How To Weld Aluminum

Video: How To Weld Aluminum
Video: How to "Weld" Aluminum for Beginners 2024, March
Anonim

Aluminum and its alloys are widely used in welded structures for various purposes. The advantages of these structural materials include high strength, corrosion resistance, and low density. In many respects, aluminum alloys are significantly superior to cast iron and some types of steels, second only to titanium alloys and high-alloy steels. When welding aluminum, you should take into account the peculiarities inherent in this material.

How to weld aluminum
How to weld aluminum

Instructions

Step 1

Welding must be preceded by the preparation of the surfaces to be joined. The welded edges are profiled, dirt and oxides are removed from them. With the help of organic solvents and alkaline compounds, the metal is degreased and surface foreign layers are removed. Use white spirit or technical acetone as a solvent.

Step 2

The oxide film is removed by means of metal brushes from a wire with a diameter of 0.1 mm and a pile length of about 30 mm. After finishing stripping, the edges should be re-treated with a solvent. When welding aluminum on an industrial scale, the surface of the parts is etched away. After stripping, the parts to be welded can be stored for a maximum of three hours.

Step 3

Before welding parts made of aluminum alloys containing magnesium, the edges and ends of the parts are cleaned with a scraper. To process the filler wire after pickling, electrochemical polishing should be carried out.

Step 4

When welding aluminum by fusion, the most rational type of joint will be butt joints. Oxide inclusions in the weld metal are eliminated by cutting the edges on the back of the weld. When conducting spot and seam contact welding, overlap joints are used, while the ratio of the thickness of the parts to be welded should not exceed 1: 2. The cross-sectional areas of the aluminum parts at the junction should be approximately equal.

Step 5

Most often, when joining parts made of aluminum and its alloys, the following types of welding are used: - gas welding;

- manual electric arc welding;

- arc welding with coated metal electrodes;

- automatic electric arc welding on a layer of flux;

- gas-shielded arc welding;

- welding with a tungsten electrode with a pulsed arc. Each of these types of welding has its own advantages and disadvantages, therefore, the appropriate method of joining aluminum parts should be chosen based on the specific conditions and technological capabilities available to you.

Recommended: