2011 is a medium-strength aluminum alloy that can be strengthened by heat treatment. This alloy has good cold and hot forming performance. Due to the presence of low-melting point phases Pb7Bi3 and Bi in the alloy, high-speed cutting and large feed rate can be used.

2011 aluminum bar rod is suitable for high-speed processing on automatic machine tools, lathes, milling machines, planers, etc. Chips are broken and refined, the processed surface is bright and smooth, and the parts are easy to assemble. 2011 aluminum bar rod is widely used as weak current motor parts, auto parts, screws, screw rods, pulleys, bearings, etc.

2011 aluminum bar rod

Why is the 2011 aluminum bar rod free cutting?

Free cutting aluminum alloys refer to aluminum alloys whose chips are easy to break, do not stick to the knife, do not wrap around the knife, and are easy to remove chips. The 2011 free-cutting aluminum alloys are all added with low melting point metals Pb and Bi. During the high-speed cutting process, the temperature of the aluminum alloy rises due to friction between the aluminum alloy and the cutting tool. When the temperature reaches or approaches the melting point of Pb and its components, the aluminum alloy chip will break, so that the chip will not stick to the knife or wrap around the knife.

Chemical composition of aluminum alloy 2011

Physical property of 2011 aluminum bar rod

Specification of 2011 aluminum bar rod

Pb free 2011B aluminum bar rod

Aluminum alloy has the characteristics of low density, high strength, corrosion resistance, and recyclability, and is widely used in electronic appliances, transportation, mechanical equipment, aerospace and other fields. A large number of aluminum alloy parts need to go through turning, milling, drilling, tapping and other processes in the manufacturing process. Free-cutting aluminum alloys refer to aluminum alloys whose chips are easy to break, do not stick to the knife, and do not wrap around the knife. Free-cutting aluminum alloys can be cut at a higher speed or with a larger feed rate, which can significantly improve the cutting efficiency, and is also conducive to obtaining aluminum alloy parts with lower surface roughness and higher dimensional accuracy.

The traditional 2011 free-cutting aluminum alloy mainly improves the machinability of the aluminum alloy by adding the low melting point metal Pb, but Pb is a toxic heavy metal element that is harmful to human health and the ecological environment. With the improvement of people's living standards and the enhancement of environmental protection awareness, many countries in the world have begun to set strict technical barriers to aluminum alloy parts containing Pb. The European Union has banned the production and sale of electronic components containing harmful substances such as Pb, Cd, and Hg. Electrical products.

In order to solve this problem, Aiboer Technology has developed an environmentally friendly Pb free 2011B aluminum bar rod by substituting Sn and Bi for Pb, which has been welcomed by customers all over the world.

Why is Pb free 2011B aluminum bar rod free cutting?

Sn and Bi will form Sn, Bi and SnBi low melting point microstructure composition in 2011B aluminum alloy. During the high-speed cutting process of alloy aluminum rods, the low-melting point particles soften, the cutting products will become discontinuous, and the cutting is easy to break. This is the main reason for the good machinability of Pb-free and easy-cutting 2011B aluminum alloy rods.

Features of Pb free 2011B aluminum bar rod

• Environmentally friendly and non-toxic, complying with EU environmental protection regulations;
• The free-cutting particles Sn, Bi and SnBi are evenly distributed in the alloy, which has excellent cutting performance;
• It has good cold and hot pressure processing performance;
• It has good corrosion resistance and coloring properties.

Chemical composition of aluminum alloy 2011B

Physical property of 2011B Aluminum bar rod

Specification of 2011B aluminum bar rod

Aiboer Technology - best free machining aluminum bar supplier

Traditional free-cutting aluminum alloys are made by adding a small amount of lead and bismuth on the basis of 2000 and 6000 aluminum alloys. In the alloy, lead and bismuth form a low-melting tissue composition. When the workpiece is heated due to friction during the cutting process, the temperature at the contact point between the workpiece and the tool is close to or reaches the melting point of the low-melting tissue composition, and the tissue composition will occur. Soften or melt chips and break easily. Good surface finish.

Alloy grades include 2007, 2030, 2011, 6012, 6026 and 6262. This kind of alloy aluminum rod has good cutting performance and good oxidation coloring performance. However, because lead is harmful to the human body, foreign countries have promulgated decrees that before the end of 2006, major industrial countries will prohibit the production and use of artificially leaded free-cutting aluminum alloys.

In order to improve the cutting performance of aluminum alloys, increase the cutting speed of aluminum alloy parts, and also improve the dimensional accuracy and surface finish of aluminum alloy parts, Aiboer Technology used Sn and Bi instead of Pb to manufacture a batch of lead-free 2011B aluminum alloy rods, 2012 aluminum alloy bar, 6021 aluminum alloy bar, 6023 aluminum alloy bar, 6040 aluminum alloy bar, etc. The products have achieved remarkable results and won praise from domestic and foreign customers.