Antigravity squeeze casting device of aluminum alloy connecting rod and manufacture method

Abstract

The invention relates to a method and a mould using an antigravity squeeze casting process to manufacture an aluminum alloy connecting rod, and particularly relates to a manufacturing method and a mould of a splitting type aluminum connecting rod. The technical scheme is that suitable foils are imbedded in the mould in advance, aluminum melting liquid is filled in to form a shape in a squeeze casting mode, the aluminum liquid enters a cavity from bottom to top through bypassing and controlling of a bypass flow cone pair, and liquid levels on two sides of the foils synchronously rise to enable a splitting interface to form inside a casting of the connecting rod. A screw mechanism is arranged on the mould, and a gap between joint surfaces of a body cavity of the connecting rod and a cover cavity of the connecting rod to bring convenience in foil placing and changing. The device and the method guarantee that the splitting interface formed when the connecting rod is cast in a pre-breaking area of a big head of the connecting rod, avoid defects of crack branching or splitting surface excursion and the like in a follow-up splitting manufacture process of the connecting rod, enable the castings to be free of entrapped air, cold shut and insufficient pouring, tight in organization and capable of conducting heat treatment, and enable mechanical property and mechanical behavior to be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of parts prepared by a squeeze casting process, and in particular relates to an anti-gravity squeeze casting method and a mold device of an aluminum alloy connecting rod. Background technique [0002] As one of the key components of the engine, the connecting rod is composed of the connecting rod body and the connecting rod cover connected by bolts. During its working process, it mainly bears high-frequency alternating forces such as stretching, compression and bending caused by combustion explosive force and reciprocating inertial force. Variable loads, harsh working conditions, complex motion states, fatigue, wear, vibration, etc. affect the service life of the connecting rod. Therefore, it is required that the connecting rod not only has high strength and fatigue resistance, but also has sufficient rigidity and toughness. [0003] In recent years, many scientific and technological workers have proposed a...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a manufacturing method and mold of a cracked aluminum alloy connecting rod blank, which solves the problems of many procedures, low material utilization rate, large investment in machine tool equipment, cutting tools and energy in the process of traditional mechanical processing of aluminum alloy connecting rods. costly

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