Method for manufacturing aluminum alloy rotor with good wear resistance and rotor manufactured by the method

Abstract

A manufacturing method for an aluminum alloy spinning rotor with good abrasion resistance comprises the steps that high-strength aluminum alloy is used for forging the spinning rotor; the following solutes including Na2SiO3.5H2O with the concentration being 8-15 g/L, Na2B4O7 with the concentration being 0.5-15 g/L, KF with the concentration being 0.5-15 g/L, CON2H4 with the concentration being 0.5-6 g/L, C6H15NO3 with the concentration being 0.5-20 g/L, and KOH with the concentration being 0.5-3g/L are obtained and dissolved in deionized water in a stainless steel tank; the two ends of a spinning rotor assembly hole are sealed through insulating materials, a stainless steel auxiliary cathode (1) is fixedly hung in a coagulation groove of the spinning rotor (2), and the minimum distance between a rotor body and the auxiliary cathode is equal to or larger than 5 mm; and the spinning rotor is connected with the positive electrode of an asymmetric bipolar pulse power supply, the stainless steel auxiliary cathode and the stainless steel tank are electrically connected with the negative electrode of the asymmetric bipolar pulse power supply, the spinning rotor, the stainless steel auxiliary cathode and the stainless steel tank are hoisted to be placed into a solution, the forward current density is maintained to 2-10 A/dm<2> , negative voltage is applied when the forward voltage is increased to 400-420 V, the negative current density is maintained to 1-6 A/dm<2>, the forward current density and the negative current density are maintained unchanged, a power source is cut off when the forward voltage is increased to 520-540 V, and thus a wear-resisting layer with the thickness being 30-35 [mu]m is obtained. The bonding strength of the wear-resisting layer and a base material is high, the wear-resisting layer has excellent impact toughness and fatigue strength and good wear resistance, the service life of the spinning rotor can be greatly prolonged, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of textile machinery and accessories manufacturing, and more specifically relates to a method for preparing an aluminum alloy rotor with good wear resistance and long service life, and the prepared rotor. Background technique [0002] In order to improve efficiency and reduce energy consumption, more and more textile machinery and accessories are eliminating steel parts and using aluminum alloy materials instead. With the continuous improvement of spinning technology, the rotating speed of the rotor is getting higher and higher, and it has reached more than 100,000 revolutions per minute. Using aluminum alloy to make the rotor can greatly reduce energy consumption. However, aluminum alloy has poor wear resistance. Spinning for a long time, the surface wear caused by contact with fibers, inclusions, etc. will affect the condensation and twisting, resulting in uneven yarn formation, increased hairiness, decrea...

AI Technical Summary

Problems solved by technology

At present, aluminum alloy rotors adopt more methods of hard anodic oxidation treatment or Ni-P plating. Hard anodic oxidation and Ni-P coating layers have low hardness and poor wear resistance; On the basis of phosphorus plating, a nickel-phosphorus composite artificial diamond micropowder coating has been developed, which is Ni-P-diamond composite plating. The Ni-P-diamond composite plating process is complicated, and the bonding strength of the film layer i

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