The invention relates to an
alloy material, and especially relates to a special aluminum
alloy preparation technology. The technology is characterized in that the technology comprises the following steps:
smelting pure aluminum ingots and master aluminum
alloy ingots in a
smelting furnace, adding
magnesium and
tin ingots when the
smelting temperature in the smelting furnace reaches 640-660DEG C, smelting, analyzing the smelted materials through adopting
spectral analysis when the smelting temperature reaches 710-730DEG C, refining at 730-750DEG C if the materials are qualified, carrying out adjusted smelting if the materials are not qualified, allowing the materials to stand for 10-20min after the refining completion, putting the materials in a heat-insulation electric furnace, carrying out heat insulation, and
casting to form a blank. The special aluminum alloy prepared through the technology has the physical characteristics of high
mechanical strength, high abrasion resistance, high
fatigue resistance,
high heat resistance, high gluing resistance, high saturability, high mosaicism to foreign matters, and the like, can effectively solve the seepage caused by the increased axial clearance because of the super-large shaft sleeve abrasion of a
gear pump, can improve the service life and the output power of the
gear pump, and makes the service life of the
gear pump using the alloy be 1-3 times the service life of an original pump.