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Casting structure and casting method of internal gear box

A casting structure and gear box technology, which is applied to casting molding equipment, casting molds, casting mold components, etc., can solve the problems of casting scrap, segregation, and easy cracks, etc., so as to improve the pass rate, reduce the loss of waste products, and reduce cracks. Effect

Active Publication Date: 2021-08-17
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide a casting structure and casting method of an internal gear box to solve the problems of cracks, slag inclusions, looseness, segregation defects, and serious scrapping of castings during casting production.

Method used

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  • Casting structure and casting method of internal gear box
  • Casting structure and casting method of internal gear box
  • Casting structure and casting method of internal gear box

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Embodiment Construction

[0037] The present invention is described in further detail below in conjunction with accompanying drawing:

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore cannot be construed as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be construed as indicating or implying relative importance; in addition, unless otherwise Clearly stipulated and limited, the terms "installation"...

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Abstract

The invention discloses a casting structure and casting method of an internal gear box. The casting structure adopts a bottom pouring type pouring system, and a bottom runner is arranged at the lower part. The improved pouring system is provided with an upper supplementary runner at the upper part of the riser root of the casting. It can adjust the temperature gradient when the casting is solidified, increase the feeding effect of the riser, and improve the local overheating phenomenon at the same time. Through the implementation of the casting structure, metallurgical defects such as cracks, looseness, and slag inclusions in the casting production process are reduced, the qualified rate of the casting is increased by 50%, the loss of waste products is reduced, and the cost is saved.

Description

【Technical field】 [0001] The invention belongs to the technical field of aluminum alloy sand casting, and in particular relates to a casting device and a casting method for an internal gear box. 【Background technique】 [0002] For the casting of internal gear box seat for aero-engine, it is the key part of a new type of engine to withstand the high temperature working environment. The structural size of the casting is as follows figure 1 As shown, it is a thin-walled structure; the maximum outer dimension is 320mm×172mm, which is divided into two layers of inner wall and outer wall. The main body wall thickness is 4.1mm. . The chemical composition of the casting is shown in Table 1. The material is ZL208. This alloy contains many elements, has excellent high-temperature mechanical properties, and has high room temperature strength. The casting is finally inspected by X-rays and fluorescence, and no cracks are allowed. , cold shut, more serious porosity and flocculent segre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/08B22C9/02B22C9/22
CPCB22C9/02B22C9/082B22C9/22
Inventor 苗莉萍卢兵兵张曼曼冯继斌赵彦辉雷丹覃佳栋吴娟利
Owner AECC AVIATION POWER CO LTD
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