Planet wheel bearing outer circle alloy layer pouring mold

Abstract

The invention discloses a planet wheel bearing outer circle alloy layer pouring mold which comprises a cylindrical mold body, a pouring bottom plate is arranged at the bottom of the mold body, inclined pouring gates are arranged in the two opposite side walls of the mold body, sprues are formed in the tops of the inclined pouring gates, horizontal pouring gates are arranged on the side faces of the inclined pouring gates, and the horizontal pouring gates penetrate through the inner wall of the mold body. Oxidizing slag generated by splashing of alloy liquid can be effectively reduced through the inclined pouring gates, the horizontal pouring gates have the effects of filtering the oxidizing slag and stabilizing flow, and gas escape during mold filling of the alloy liquid can be effectively controlled, so that the performance of an alloy layer on the outer circle of the planet wheel bearing is improved, the cylindrical mold body can be cooled through an inner hole during pouring, and the mold is convenient to use. And the solidification sequence of the tin-based alloy from the surface of the carbon structural steel substrate in the planet wheel bearing to the inner wall of the mold body is ensured, so that the bonding strength of the excircle alloy layer of the planet wheel bearing and the internal carbon structural steel substrate is improved.

Description

technical field [0001] The invention belongs to the technical field of casting molds, and relates to a casting mold for an alloy layer of an outer circle of a planetary wheel bearing. Background technique [0002] Sliding bearings are generally divided into radial sliding bearings, thrust sliding bearings and planetary wheel bearings. The structure of radial sliding bearings is to cast a tin-based alloy layer on the inner hole of a high-quality carbon structural steel matrix. The casting process is generally centrifugal casting. Finished on the pouring machine, the pouring quality is easy to control. The tin-based alloy layer of the thrust sliding bearing is designed on the end face, and the tin-based alloy layer of the planetary wheel bearing is designed on the outer circle, which cannot be completed by centrifugal casting, and the pouring process is gravity pouring. [0003] After casting the tin-based alloy layer of planetary wheel bearings, the internal and surface qual...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a casting mold for the outer circle alloy layer of the planetary wheel bearing, which solves the problem of the many casting defects in the tin-based alloy layer of the outer circle of the planetary wheel bearing cast by the existing gravity casting tooling, and the tin-based alloy and carbon structural steel The problem of low matrix binding force

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