Hollow blade wax mold pressing method
A technology of hollow blades and wax molds, which is applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of easy fracture of the ceramic core section, and achieve the goal of ensuring continuous core, ensuring qualified wall thickness and dimension, and improving dimensional accuracy Effect
Active Publication Date: 2020-01-10
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology
[0005] The invention provides a hollow blade wax mold pressing method to solve the technical problem that the ceramic core section of the ceramic core forming the blade cavity is easy to break when the hollow blade wax mold is pressed
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[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.
[0029] refer to figure 1 and image 3 , the preferred embodiment of the present invention provides a wax mold pressing method, the ceramic core 10 used to form the wax mold cavity has a plurality of thin-walled and elongated ceramic core segments 11, and the multiple ceramic core segments 11 are arranged at intervals in sequence, Wax mold pressing method comprises the following steps:
[0030] Filling wax or glue between adjacent ceramic core segments 11 to connect multiple ceramic core segments 11 into a whole;
[0031] Wrap the wax sheet at the empty groove of the ceramic core 10, the joint of the ceramic core segment 11 and the ceramic core main body 12 of the ceramic core 10;
[0032] Paste the core support 20 on the surface of the ceramic co...
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Abstract
The invention discloses a hollow blade wax die pressing method. A ceramic core used for forming a hollow blade wax die cavity is provided with a plurality of long, thin and thin-wall ceramic core sections. The multiple ceramic core sections are arranged sequentially at intervals. The hollow blade wax die pressing method comprises the following steps that the spaces between adjacent ceramic core sections are filled with wax or glue, so that the multiple ceramic core sections are connected into a whole; an empty groove of the ceramic core, and the joints of the ceramic core sections of a ceramiccore main body of the ceramic core are coated with wax pieces; a chaplet is pasted to the surface of the ceramic core; and the ceramic core obtained after the treatment is put into a die cavity of ahollow blade wax die, and the wax die is pressed. In the wax die pressing method, the spaces between the adjacent ceramic core sections are filled with the wax or the glue, so that the multiple ceramic core sections are connected into a whole, thus the overall strength of the long, thin thin-wall ceramic core sections is enhanced, resistance to impact of liquid wax is improved, the ceramic core sections is not liable to breakage under the action of the injection pressure of liquid paste state wax material, the technical problem existing in the prior art is solved, the success rate of wax die pressing is increased, and operation is simple and convenient.
Description
technical field [0001] The invention relates to the field of wax mold pressing, in particular to a hollow blade wax mold pressing method. Background technique [0002] As the heart of an aircraft, an aero engine directly affects the reliability and economy of an aircraft, and is also an important manifestation of a country's technological level and national defense strength. With the development of high power-to-weight ratio aero-engines with high efficiency and low fuel consumption, the inlet temperature of the engine turbine continues to increase, and the operating temperature of the turbine blades, which are the key hot-end components of the aero-engine, is also increasing. At present, the temperature at the front inlet of the advanced engine turbine reaches 1650°C. Limited by the melting point of the metal, it is close to the limit to improve the temperature bearing capacity of the blade by improving the preparation material of the blade. Therefore, improving the air coo...
Claims
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IPC IPC(8): B22C7/02B22C9/24
CPCB22C7/02B22C9/24
Inventor 郑朝会雷四雄姚永飞钟文惠梁亚飞周坚
Owner CHINA HANGFA SOUTH IND CO LTD