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What is Aluminum Bronze
Aluminum as the main alloying element of the copper-based alloy, is containing iron, manganese elements of aluminum bronze, belongs to the high-strength heat-resistant bronze.
Aluminum content is generally not more than 11.5%, and sometimes also add the appropriate amount of iron, nickel, manganese and other elements to further improve performance. Aluminum bronze can be heat-treated strengthened, its strength is higher than tin bronze, high temperature oxidation resistance is also better.
Higher strength, good wear resistance for high strength screws, nuts, copper bushings, sealing rings, etc., and wear-resistant parts, the most prominent feature is its good wear resistance.
For containing iron, manganese elements of aluminum bronze has high strength and wear resistance, quenched, tempered to improve the hardness, has a good high temperature corrosion resistance and oxidation resistance in the atmosphere, fresh water and seawater corrosion resistance is very good, machinability is still available, can be welded is not easy to braze, the hot state of the pressure processing is good. China has been able to produce.
Aluminum bronze copper bushing performance
Aluminum bronze bronze bushings have many excellent properties. Aluminum bronze bronze bushing has high strength, hardness and wear resistance, and is commonly used to manufacture gear blanks, threads and other parts. Aluminum bronze bronze bushing has good corrosion resistance, so it can be used to manufacture corrosion-resistant parts, such as propellers, valves and so on. Aluminum bronze bronze bushings in the impact does not produce sparks, can be used to manufacture non-sparking tool materials. With excellent thermal conductivity and stable stiffness, as a mold material in stretching, calendering stainless steel plate heat exchanger will not produce sticky mold, scratching the workpiece and other advantages, has become a new type of mold material. Aluminum bronze copper sleeve has shape memory effect, has been developed as a shape memory alloy. Aluminum bronze alloy is relatively inexpensive, and has become a partial substitute for some expensive metal materials, such as alternative tin bronze, stainless steel, nickel-based alloys. It is because of the excellent characteristics of aluminum bronze bronze bushings, more and more popular, in the civilian and military industry plays an important role.、
Chemical composition of aluminum bronze bushing
The effect of chemical composition on the organization and properties of aluminum bronze has been one of the hot spots of concern. Chemical composition of the role of the alloy is not a clear definition of good and bad. Such as iron added to aluminum bronze generally play a grain refinement, reduce "spontaneous tempering brittleness", improve mechanical properties of the role, but when the iron content is higher, iron will be precipitated Fe3Al2 compound, so that the mechanical properties of the alloy is bad, so the iron content should not be more than 5%. There is also zinc, many studies believe that it and the base metal solid solution, can improve the plasticity of the metal, while some studies believe that it is an impurity element. This shows that the role of alloying elements can not be generalized. It is generally accepted that the addition of an appropriate amount of alloying elements can improve the mechanical properties of the alloy, such as the addition of an appropriate amount of iron to form aluminum-iron bronze, manganese to form aluminum-manganese bronze, nickel to form aluminum-nickel bronze. Secondly, the requirements for the content of impurity elements have not been clearly defined. It is because of the changes in chemical composition makes the types of aluminum bronze and applications vary, researchers should continue to study the impact of chemical composition, the role of the mechanism, to further expand the scope of application of aluminum bronze.
