High-silicon aluminum alloy swash plate die-forging process and die

Abstract

The invention discloses a high-silicon aluminum alloy swash plate die-forging process, which realizes plastic forming of die forgings by a small flashing open type forging die. The die-forging process comprises the following steps: extruding a bar material, blanking, heating, die-forging plastic forming and post treatment, wherein the heating temperature of a blank is 500+/-5 DEG C, and the preheating temperature of a concave die is 200+/-5 DEG C; the small flashing die-forging process directly forges the heated aluminum alloy bar material to form swash plate die forgings with small flashing; the die is the small flashing open type forging die and consists of an upper convex die, a lower convex die and an extrusion cylinder; the concave die adopts a detachable structure; during ejecting, the die forgings are directly ejected from the lower convex die; the upper convex die is provided with annular even gaps of which height is 3 millimeters and thickness is 0.5 millimeter, namely flashing grooves; and the gradient of all surface withdrawing die contacted with the extrusion cylinder is less than or equal to 5 degrees. The process flow is reasonable, the process parameter and performance are stable, the die has a simple structure, the manufacture, assembly and use are convenient, and the work is reliable.

Description

technical field [0001] The invention relates to a high-silicon aluminum alloy swash plate die forging process and mold, which can be directly used in the die forging production of key parts such as automobiles, airplanes and household air-conditioning compressors, which use high-silicon aluminum alloy as materials, and belong to the plastic forming of metal materials Field with mold technology. Background technique [0002] The swash plate is a key part of the air-conditioning compressor. It drives the piston to reciprocate and work back and forth under high-speed rotation, and the frequency is extremely high. Therefore, the material is required to have the characteristics of high strength, high hardness and good wear resistance. Generally, aluminum-silicon series cast aluminum is used. alloy. [0003] The content of Si element in A390 aluminum alloy is 16-18%. It is a high-silicon aluminum alloy. It is an American brand of hypereutectic casting aluminum-silicon alloy mater...

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Problems solved by technology

[0006] The invention provides a high-silicon aluminum alloy swash plate die forging process and mold, that is, the aluminum alloy swash plate part die forging process, and provides a die for realizing the die forging process, the purpose of which is to effectively overcome the problems existing in the high-silicon aluminum alloy during die-casting The problem of poor plastic formability

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