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Integral manufacturing method of S-04/S-08 high-strength stainless steel three-dimensional flow shrouded impeller

A closed impeller and manufacturing method technology, applied in additive manufacturing, engine manufacturing, pump components, etc., can solve the problems of low processing efficiency and high manufacturing cost, and achieve the effects of improved performance, excellent mechanical properties, and fine grains

Active Publication Date: 2016-11-09
XIAN SPACE ENGINE CO LTD
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Problems solved by technology

It can be seen that this method needs to design complex numerical control programs for the complex ternary flow channel in the processing process, and the processing process needs to design multiple sets of electrodes for sequential processing, which leads to low processing efficiency and high manufacturing cost.

Method used

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  • Integral manufacturing method of S-04/S-08 high-strength stainless steel three-dimensional flow shrouded impeller
  • Integral manufacturing method of S-04/S-08 high-strength stainless steel three-dimensional flow shrouded impeller
  • Integral manufacturing method of S-04/S-08 high-strength stainless steel three-dimensional flow shrouded impeller

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Embodiment Construction

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, and the present invention includes but is not limited to the following embodiments.

[0031] The technical scheme adopted by the present invention to solve its technical problem comprises the following steps:

[0032] (1) Establish a three-dimensional model of the impeller, import the STL format file of the three-dimensional model into the laser selective melting forming system, and perform slice processing;

[0033] (2) According to the structural characteristics of the impeller, determine the forming direction and the supporting position;

[0034] (3) According to the characteristics of S-04 / S-08 high-strength stainless steel materials, set the processing parameters of laser selective melting and forming;

[0035] (4) Forming under the protection of inert gas;

[0036] (5) After the forming is completed, clean the floating powder, and remove the substra...

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Abstract

The invention provides an integral manufacturing method of an S-04 / S-08 high-strength stainless steel three-dimensional flow shrouded impeller. The integral manufacturing method comprises the steps of firstly, establishing an impeller three-dimensional model, and carrying out slicing treatment; determining the forming direction and support adding positions according to structural characteristics of the impeller; setting parameters of a laser selective melting forming processing technology according to characteristics of a high-strength stainless steel material; forming under protection of an inert gas; after forming, cleaning floating powder, removing a base plate through linear cutting, and removing supports; and finally, carrying out follow-up treatment such as surface treatment and thermal treatment on the impeller. According to the integral manufacturing method, complex cutters or fixtures do not need to be designed, materials can be directly added for part manufacturing only through the three-dimensional model of the impeller, the manufacturing cycle is greatly shortened, and the integral manufacturing method is applicable to trial manufacturing and middle and small-batch production in the development stage.

Description

technical field [0001] The invention relates to an integral manufacturing method of an impeller, in particular to an integral processing method for laser selective melting and additive manufacturing of a ternary closed impeller. Background technique [0002] The existing ternary flow closed impeller manufacturing methods mainly include integral precision casting method, numerical control machining method and electric discharge machining method. [0003] Although precision casting technology can solve the processing and manufacturing problems of some complex precision components, the internal quality control is difficult, especially when the blade thickness is small, defects such as component segregation, shrinkage cavities, shrinkage porosity, cracks, and insufficient pouring are prone to occur. Lower, higher cost, longer production cycle. [0004] At present, the numerical control milling method for integrally machining a ternary flow closed impeller has mastered key techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F3/24B33Y10/00
CPCB33Y10/00B22F3/24B22F2003/247B22F2003/248B22F2998/10B22F2999/00B22F10/00B22F10/36B22F10/64B22F10/28B22F10/80B22F10/66B22F10/366B22F10/32B22F2201/11F05D2300/516F05D2250/621F04D29/2227F05D2230/22F05D2230/31Y02P10/25
Inventor 李护林杨欢庆陈新红王琳彭东剑
Owner XIAN SPACE ENGINE CO LTD
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