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Method capable of rapidly solving problem of gas turbine blade casting deformation

A gas turbine and blade technology, which is applied in the field of quickly solving the casting deformation of gas turbine blades, can solve the problems of high cost, lack of pertinence, and long test period, and achieves the goal of improving the dimensional qualification rate, improving the deformation of castings, and reducing the solidification rate. Effect

Inactive Publication Date: 2018-03-06
DONGFANG TURBINE CO LTD
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Problems solved by technology

Although this method can solve the deformation of castings, it is blind and untargeted, and the test period is long and the cost is high

Method used

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  • Method capable of rapidly solving problem of gas turbine blade casting deformation

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Embodiment Construction

[0016] Such as figure 1 As shown, a method for quickly solving the casting deformation of gas turbine blades includes the following steps:

[0017] (1) Use the 3D modeling software UG or SolidWorks to design the gas turbine blade pouring system, and export it as an IGS file; then import the IGS file into the HypeMesh software, automatically divide the surface mesh, and export it as an STL file; import the STL file into the Mesh 3D file , automatically divide the body grid, and export it as a mesh format file; import the mesh file into the ProCast file, set parameters, simulate and calculate the temperature distribution of the gas turbine blade pouring system, and accurately locate the first cooling and solidification area of ​​the gas turbine blade before the surrounding area 1;

[0018] (2) Take the wax mold module corresponding to the gas turbine blade, coat the surface of the wax mold module with paint, and perform dewaxing, roasting, and cooling in sequence to obtain the m...

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Abstract

The invention discloses a method capable of rapidly solving the problem of gas turbine blade casting deformation. The method is characterized by comprising the following steps: (1) designing a gas turbine blade pouring system by utilizing three-dimensional modeling software, guiding into finite element software, simulating the temperature distribution of the gas turbine blade pouring system, accurately positioning an area, which is cooled and solidified earlier than the periphery, of the gas turbine blade; (2) taking a wax mold module corresponding to the gas turbine blade, coating the surfaceof the wax mold module with coating, and sequentially performing dewaxing, roasting and cooling treatment to obtain a mold shell; (3) wrapping the mold shell, corresponding to the area, which is cooled and solidified earlier than the periphery, of the gas turbine blade with ceramic heat-insulating cotton with certain thickness; and (4) roasting the wrapped mold shell, taking out the roasted moldshell and pouring. By the method, the deformation area of the gas turbine blade is accurately positioned, the qualification rate of the gas turbine blade casting is increased, operation is facilitated, and the method is an effective method capable of solve the problem of deformation generated by shrinkage stress of the gas turbine blade.

Description

technical field [0001] The invention relates to the field of precision casting, in particular to a method for quickly solving the casting deformation of a gas turbine blade. Background technique [0002] Turbine blades, the core components of heavy-duty gas turbines, are currently integrally cast by investment casting techniques. For example, the fourth-stage moving blade of a gas turbine has a total length of about 380mm, and the thinnest part is only 0.7mm, which is easily deformed after precision casting. In order to meet the size requirements of the blade design drawings, the traditional method is to use trial and error methods to wrap ceramic insulation cotton based on the casting structure and experience, and to test repeatedly in order to obtain castings whose size meets the design requirements. Although this method can solve the deformation of castings, it is blind and untargeted, and the test period is long and the cost is high. Contents of the invention [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22D27/04
CPCB22C9/04B22D27/04
Inventor 李海松巩秀芳朱广智杨功显郭雄陶飞刘艳领
Owner DONGFANG TURBINE CO LTD
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