Method for preparing complex hollow cavity casting through cooperation of ceramic core and soluble core
A ceramic core and hollow type technology, which is applied in cores, casting molding equipment, casting molds, etc., can solve complex vacuum cavity forming, casting cavity forming and other problems, so as to solve molding problems, reduce production cycle and cost low effect
Active Publication Date: 2017-09-01
CENT IRON & STEEL RES INST
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Problems solved by technology
[0005] The invention provides a method for preparing a complex hollow cavity casting with a ceramic core and a soluble core, which solves the problem of casting cavity forming. The invention uses a ceramic core and a soluble core. The matching problem of ceramic core and soluble core, and the problem of complex vacuum cavity forming; using the method for preparing complex hollow cavity castings of the present invention can not only ensure the molding of complex hollow cavity casting cavity, but also ensure the casting shape cavity surface quality
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Embodiment 1
[0045] A high-temperature alloy casting for an engine can be roughly divided into three layers of inner and outer rings in structure, and there are multiple hollow cavities of different sizes on each ring, and the minimum distance between each two rings is 4mm. The maximum spacing is only 9mm; the casting height is 100mm, and the minimum diameter is The maximum diameter is The size of the casting is small and the structure of the cavity is complex, and the production and trial production of the casting cannot be realized by using the ceramic core forming method or the soluble core forming method alone; according to the structural characteristics of the superalloy casting for the engine, the present invention adopts the ceramic core and the The method used in conjunction with the soluble core to solve the cavity forming problem of the casting.
[0046] Specific steps are as follows:
[0047] Step 1. According to the cavity size of superalloy castings for engines, ceramic co...
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The invention provides a method for preparing a complex hollow cavity casting through cooperation of a ceramic core and a soluble core. The method mainly comprises the steps that firstly, various molds are designed according to the casting; secondly, the ceramic core and the soluble core are prepared; thirdly, the prepared ceramic core is put into an integral mold of the ceramic core and the soluble core, a parting agent is sprayed, mold assembly is carried out, and the soluble core is pressed and formed; fourthly, drawing is carried out, and a press-formed ceramic core and soluble core cooperating integral core is taken out; fifthly, the integral core is put into the complex hollow cavity casting to be pressed by a wax mold, drawing is carried out, and the wax mold is taken out; sixthly, the soluble core is removed; seventhly, the complex hollow cavity casting is subjected to casting forming treatment; and eighthly, the ceramic core is removed, and the complex hollow cavity casting is completely formed. The method has the beneficial effects that the method that the ceramic core and the soluble core cooperate is adopted, and the cooperation problem of the ceramic core and the soluble core and the problem of hard forming of a complex hollow cavity are solved.
Description
technical field [0001] The invention belongs to the technical field of forming cores for complex hollow cavity castings in the precision casting process, and in particular provides a method for preparing complex hollow cavity castings through the cooperation of ceramic cores and soluble cores. Background technique [0002] At present, in the precision casting industry, there are two methods for forming the cavity of complex hollow cavity castings: ceramic core and soluble core. [0003] The ceramic core is made of refractory materials mixed in a certain proportion, sintered and formed, embedded in the process of wax pressing, and removed after the casting is poured and formed. The soluble core is that each component is mixed into a paste according to a certain proportion, and it is pressed and formed under a certain temperature and pressure. The core is removed to form a hollow cavity. However, for the preparation of hollow cavity castings with complex structures, the abov...
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Login to View More IPC IPC(8): B22C9/24B22C9/04B22C9/10
CPCB22C9/04B22C9/103B22C9/105B22C9/24
Inventor 杨曼利刘浩然王倩谢秋峰王燕坡薛鑫孔胜国吴剑涛李俊涛
Owner CENT IRON & STEEL RES INST