Double-buffering casting system for directional hollow turbine work blade

A pouring system and double-buffering technology, applied in the direction of manufacturing tools, metal processing equipment, and equipment for feeding molten metal into molds, etc., to achieve the effects of reducing impact, reducing flow rate, and reducing scrap rate

Active Publication Date: 2015-03-04
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of broken and leaky cores and wall thickness problems caused by eccentric cores during the pouring process of hollow turbine working blades, the invention provides a double buffer casting system for directional hollow turbine working blades

Method used

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  • Double-buffering casting system for directional hollow turbine work blade

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Embodiment 1

[0017] A double-buffer pouring system for directional hollow turbine working blades, which consists of circuitous pouring funnel 1, sprue cup 2, upper filter screen, upper disc 3, solid blocking piece 4, hollow tube 5, vertical sprue 6, lower Filter screen, horizontal sprue 7, blade shell cavity 8, center column pipe 9, chassis 10 and exhaust passage 11; the lower end of circuitous pouring funnel 1 is located at the upper end of sprue cup 2, and the lower end of sprue cup 2 is connected to the upper end of sprue cup 2. The discs 3 are connected, the upper surface of the upper disc 3 is connected with the upper end of the vertical sprue 6, the lower surface of the upper disc 3 is connected with a solid block piece 4, and the outer edge of the upper disc 3 has a hollow hole vertically passing through the disc. The tube 5, the lower end side of the vertical sprue 6 is connected to the horizontal sprue 7, the horizontal sprue 7 is connected to the lower end of the blade shell cavit...

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Abstract

By aiming at the problem of core fracture and leakage occurring in the casting process of a hollow turbine work blade and the problem of wall thickness due to eccentricity, the invention provides a double-buffering casting system for a directional hollow turbine work blade, and belongs to the field of directional solidification of investment casting. The casting system consists of a circuitous casting funnel, a sprue cup, an upper part filter screen, an upper circular disc, a solid plug sheet, a hollow pipe, a vertical sprue, a lower part filter screen, a transverse straight sprue, a blade die case cavity, a middle post pipe, a bottom disc and an exhaust passage, wherein through the buffering effect of the circuitous casting funnel, the upper circular disc, the vertical sprue, the transverse sprue and the filter screens on metal liquid, the flowing speed of the metal liquid can be decelerated, so the impact of the metal liquid on a ceramic die core arranged in the die case cavity is greatly reduced, the problem of core fracture and leakage easily occurring in the casting process and the problem of wall thickness due to eccentricity can be greatly solved, the rejection rate is reduced, and the cost is reduced.

Description

technical field [0001] The invention belongs to the field of directional solidification of investment casting, in particular to a double buffer pouring system for directional hollow turbine working blades. Background technique [0002] During the directional solidification process of hollow turbine working blades, the ceramic core needs to be soaked at a high temperature above 1500°C for more than one hour, which puts forward higher requirements for the high-temperature strength of the ceramic core, especially during the pouring process. The high crucible pours down through the sprue of the mold shell and directly enters the cavity. Due to the high density of the superalloy metal liquid, it is easy to cause impact on the ceramic core in the cavity, resulting in core breakage and core leakage during the pouring process. Unqualified blade wall thickness caused by eccentricity. Contents of the invention [0003] Aiming at the problems of broken and leaky cores and wall thick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D35/04
CPCB22D35/04
Inventor 乐献刚彭志江史凤岭孙长波张鸿
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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