Casting technology of planet carrier

A casting process and planet carrier technology, which is applied to the casting process field of the planet carrier, can solve the problems of increased cost, waste of molten iron, low process yield, etc., so as to solve the problem of filling and feeding, reduce labor intensity, and simplify the cleaning process. Effect

Inactive Publication Date: 2018-10-02
如皋岩达机械工业有限公司
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Problems solved by technology

From the analysis of technical requirements, materials, and structural characteristics, the production of planetary carriers mainly has the following difficulties: the casting is high-strength ductile iron, and the smelting process and operation are very difficult; the requirements for dimensional accuracy and surface quality are high; the connecting ribs on the casting are relatively thick and large , it is easy to form casting defects such as shrinkage porosity and shrinkage cavity in this part, and it is difficult to guarantee the internal quality of the casting
[0004] In order to avoid the phenomenon of shrinkage cavity and shrinkage porosity in the casting process, in

Method used

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  • Casting technology of planet carrier

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[0022] The technical solutions in the embodiments of the invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] The invention provides a casting process for a planet carrier, which includes the following steps:

[0024] S1, modeling process (such as figure 1 Shown): The shell 1 is made. There is only one riser 2 with a diameter of 90mm and a height of 120mm in the center of the top of the shell 1. The riser 2 is a heat-generating riser; The outer membrane is used to make a mud core. After the mud core is made, it is polished, and the polished mud core is placed ...

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Abstract

The invention discloses a casting technology of a planet carrier. The technology comprises following steps of modeling procedure; shell making, wherein a riser is formed in the centre of the top of ashell; clay core making, wherein a ground clay core is horizontally placed on the center in the shell; sand box making, wherein the mold thickness of a sand box is controlled to be 20 to 30 mm; moltenmetal smelting, wherein a raw material is put into a melting furnace to be smelted, a nodulizing agent is added into the furnace for nodulizing, and finally a nucleating agent is added for nucleating; casting forming, wherein the top riser water inlet tap casting pouring process is adopted, and molten metal is poured into the metal through the riser; casting treatment, wherein a casting is groundand subject to heat treatment. The riser tap casting process system is reasonably arranged, and therefore the filling and feeding aims are achieved, the production operation is simplified, and the casting process yield reaches above 85%.

Description

technical field [0001] The invention relates to the technical field of planet carrier casting, in particular to a casting process of a planet carrier. Background technique [0002] The planetary carrier is one of the main components of the planetary gear transmission. The planetary wheel shaft or bearing is mounted on the planetary carrier. When the planetary wheel is used as a basic component, it is the part that bears the largest external force moment in the mechanism. The structure of the planetary carrier is mainly composed of the above The upper plate and the lower plate are provided with planetary shaft holes at positions where the connecting ribs are staggered, and the centers of the upper and lower plates are provided with central axis holes. [0003] The planetary carrier is mainly formed by casting, and the quality requirements of the planetary carrier are relatively high during the casting process. From the analysis of technical requirements, materials, and struc...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/02B22C9/08B22C9/10C21C1/10
CPCB22C9/22B22C9/02B22C9/088B22C9/10C21C1/105
Inventor 石慧亮
Owner 如皋岩达机械工业有限公司
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