Improved tin-phosphor bronze alloy manufacturing process

Abstract

The invention relates to the field of tin-phosphor bronze alloy production, in particular to an improved tin-phosphor bronze alloy manufacturing process which comprises the following steps: step 1, red copper is poured into an electric heating furnace to be melted for a period of time; secondly, refined tin with the mass larger than 9% of the mass of the red copper and smaller than or equal to 14% of the mass of the red copper is doped into the electric heating furnace for smelting for a period of time; thirdly, red phosphorus with the mass larger than 0.6% of the mass of the red copper and smaller than or equal to 1.2% of the mass of the red copper is doped into the electric heating furnace, and smelting continues for a period of time; 4, red copper is poured into the electric heating furnace, smelting is conducted for a period of time, and then a blank is formed through pouring; and fifthly, the blank is extruded to form the compact tin-phosphor bronze alloy. When the technical scheme is adopted, the wear resistance, the high temperature resistance and the bonding resistance of the tin-phosphor bronze alloy can be improved.

Description

technical field [0001] The invention relates to the field of tin-phosphorus bronze alloy production, in particular to an improved manufacturing process of the tin-phosphorus bronze alloy. Background technique [0002] The traditional production methods of tin phosphor bronze alloy are: casting, rough turning and fine turning. The tin phosphor bronze alloy produced by this method has poor hardness and high temperature resistance, and the service life of tin phosphor bronze alloy is relatively long after it is applied to mechanical equipment Short, frequent replacement, high economic cost. [0003] In order to solve the problem of poor hardness and high temperature resistance of tin phosphor bronze alloy, the prior art provides a manufacturing method of tin phosphor bronze parts: first put red copper in a graphite crucible furnace with a temperature of 1250-1300 ℃ and heat it with coke Melt in the furnace, then add 5-7% refined tin, and then add 0.2-0.4% red phosphorus, close...

AI Technical Summary

Problems solved by technology

[0002] The traditional production methods of tin phosphor bronze alloy are: casting, rough turning and fine turning. The tin phosphor bronze alloy produced by this method has poor hardness and high temperature resistance, and the service life of tin phosphor bronze alloy is relatively long after it is applied to mechanical equipment Short, frequent replacement, high economic cost

[0003] In order to solve the problem of poor hardness and high temperature resistance of tin phosphor bronze alloy, the prior art provides a manufacturing method of tin phosphor bronze parts: first put red copper in a graphite crucible furnace with a temperature of 1250-1300 ℃ and heat it with coke Melt in the furnace, then add 5-7% refined tin, and then add 0.2-0.4% red phosphorus, close the furnace cover and heat up to 1300 ° C, and then inject the melt into the temperature of 40-60 ° C In the mold, the tin phosphor bronze alloy is rough machined, then annealed and then gravity extruded, and finally the tin phosphor bronze is obtained by finishing.

[0004] The hardness and high temperature resistance of the tin phosphor bronze alloy produced by this manufacturing method are greatly improved. However, since the furnace temperature of the graphite crucible furnace cannot be effectively controlled after the furnace cover is opened during the smelting and slag removal process, and the coke The tin phosphor bronze alloy formed after hydrogen sulfide invades the melt is prone to cracks, blisters, pores, pinholes, and cracks, and the infiltrated oxidizing elements, such as zinc, aluminum, nickel, beryllium, etc., are easy to harden and damage the tin phosphor bronze alloy. Therefore, the wear resistance, high temperature resistance and adhesion resistance of the produced tin phosphor bronze alloy are poor, and the production cost of using coke heating is too high, which is not conducive to cost saving

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