Selective laser melting manufacturing method of turbine hollow stationary blade
A technology of flat hollow stator vanes and hollow stator vanes is applied in the field of selective laser melting manufacturing of turbine hollow stator vanes, which can solve the problems of rough printing surface, inability to meet the manufacturing requirements of complex precision structures, low printing accuracy, etc., and achieve high production accuracy. , to ensure the printing quality, the overall production process is simple
Pending Publication Date: 2022-06-24
SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD +1
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[0030] The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0031] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings in this specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of those who are familiar with the technology, and are not intended to limit the implementation of the present invention. Restricted conditions, it does not have technical substantive significance, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the present invention. The scope of the disclosed technical content can be covered....
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Abstract
The invention provides a selective laser melting manufacturing method of a turbine hollow stationary blade, which comprises the following steps of: pre-processing a model: performing stock layout on a hollow stationary blade model on a printing substrate datum plane, and enabling the root end face of the hollow stationary blade model to be parallel to the printing substrate datum plane; preparation before printing: drying metal powder to be printed, adding the metal powder into printing equipment, and then filling inert protective gas into the printing equipment; printing and forming: printing a hollow stationary blade by adopting a preset laser scanning mode and preset printing parameters; and post-treatment of the printed piece: carrying out stress relief annealing treatment on the hollow stationary blade to separate the hollow stationary blade from the printing substrate, and carrying out sand blasting treatment and polishing treatment on the surface of the hollow stationary blade. According to the method, the hollow stationary blades with higher quality can be produced in batches, so that the whole production process of the hollow stationary blades is simpler.
Description
technical field [0001] The invention relates to the field of turbine hollow stator blade production, in particular to a selective laser melting manufacturing method for turbine hollow stator blades. Background technique [0002] Turbine hollow vanes are usually manufactured by welding or precision casting. Among them, the manufacture of the welded hollow stator includes the stamping of the inner blade and the back plate, the processing of the welding groove, the welding of the blade components, and the correction of the blade. Some hollow stator blades include four parts: the back arc, the inner arc, the steam inlet edge and the steam outlet edge. The stamping preparation of the blade parts and the welding of the blades involve the manufacture of special molds, which are expensive to manufacture and are not suitable for use with The production of a single blade, and the requirements for welding process and deformation control are higher. [0003] Casting static blade adopt...
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IPC IPC(8): B22F10/28B22F5/04B33Y10/00B33Y80/00C22C38/02C22C38/04C22C38/40
CPCB22F5/04B33Y10/00B33Y80/00C22C38/02C22C38/04C22C38/40
Inventor 何易霍鑫王煜胡捷王博
Owner SHANGHAI ELECTRIC POWER GENERATION EQUIPMENT CO LTD