Pouring system for blade casting with thin core and crown
A casting system and blade technology, applied in the direction of mold, core, mold composition, etc., can solve the problems of casting process difficulty, casting scrap, easy core breakage, etc., to avoid loose castings, solve the problem of broken cores, improve The effect of pass rate
Active Publication Date: 2014-08-06
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
[0002] Some engine low-pressure turbine working blade castings are crowned hollow equiaxed crystal casting blades. Due to the thin and long structure of the core, the core is easy to break, which makes the casting process extremely difficult.
During the pouring process of castings, a large number of castings were scrapped due to broken cores. At the same time, defects such as looseness and cracks appeared in the process of taking technical measures to avoid broken cores.
Method used
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[0014] Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail, but protection scope of the present invention is not limited to following embodiment:
[0015] A casting system for a thin-core crowned blade casting, comprising a sprue cup 1, a sprue 2, a lower side injection runner 3, a lower side injection inner gate 4, an upper side injection flow limiting channel 5, an upper side injection horizontal Runner 6, top injection gate 7, top injection riser 8 on the upper side and exhaust channel 9, when pouring, the tenon of the blade is downward, the blade crown is upward, and the lower side is injected into the horizontal runner 3, and the lower side is injected into the gate 4 is set under the tenon of the blade, the upper side injection flow-limiting channel 5, the upper side injection runner 6, the upper top injection riser 8, and the top injection gate 7 are arranged above the blade crown, and the blade tenon passes through...
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Abstract
The invention relates to the technical field of blade pouring and specifically relates to a pouring system for a blade casting with a thin core and a crown. The pouring system is composed of a pouring cup, a straight pouring channel, a downside horizontal pouring channel, a downside internal pouring port, an upside pouring limiting channel, an upside horizontal pouring channel, an upside top pouring riser, a top internal pouring port and an exhaust channel, wherein the downside horizontal pouring channel and the downside internal pouring port are arranged under a blade tenon; the upside pouring limiting channel, the upside horizontal pouring channel, the upside top pouring riser and the top internal pouring port are arranged above the crown of the blade; the blade tenon is connected with the downside horizontal pouring channel through the downside internal pouring port; the crown of the blade is connected with the top internal pouring port and the upside top pouring riser, the upside horizontal pouring channel is connected with the straight pouring channel through the upside pouring limiting channel; the straight pouring channel is connected with the pouring cup; the exhaust channel is connected with the upper part of the upside horizontal pouring channel; the upside top pouring riser is connected with the lower part of the upside horizontal pouring channel; and the exhaust channel extends upward and is connected with the pouring cup. The pouring system has the advantages that the broken core is reduced, the defect of loosening is overcome and the yield of the casting is increased.
Description
technical field [0001] The invention relates to the technical field of blade casting, in particular to a casting system for thin-core crowned blade castings. Background technique [0002] Some engine low-pressure turbine working blade castings are crowned hollow equiaxed crystal casting blades. Due to the thin and long structure of the core, the core is easy to break, which makes the casting process extremely difficult. During the pouring process of castings, a large number of castings were scrapped due to broken cores. At the same time, defects such as looseness and cracks appeared in the process of taking technical measures to avoid broken cores. With the continuous improvement of engine working efficiency, the application of hollow casting blades is becoming more and more extensive; and the manufacturing technology of ceramic cores is also improving, so the cavity design of hollow blades is more complicated, there are more weak points, and broken cores affect the quality ...
Claims
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IPC IPC(8): B22C9/08B22C9/22
Inventor 李波李雪尚伟潘国志周君华
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION