CN-121988752-A - Forming method, device and equipment of labyrinth type part

CN121988752ACN 121988752 ACN121988752 ACN 121988752ACN-121988752-A

Abstract

The invention discloses a forming method, a forming device and forming equipment for labyrinth parts, relates to the technical field of additive manufacturing, and aims to solve the problem of low production efficiency of labyrinth parts in the prior art. The method comprises the steps of obtaining the forming requirement of the labyrinth part, determining the runner span and the runner height of the labyrinth part based on the forming requirement, determining the part forming direction of the labyrinth part based on the runner span and the runner height, and printing the labyrinth part by adopting a laser selective melting process based on the part forming direction to obtain the finally formed part. The production efficiency of the labyrinth parts can be improved by reasonably designing the corresponding part forming direction according to the span and the height of the runner.

Inventors

WU QIAN
LIU YEPENG
Cheng Bochong
LI QIANCHENG
ZHAO DONGMEI

Assignees

鑫精合激光科技有限公司

Dates

Publication Date: 20260508
Application Date: 20241106

Claims (10)

1. A method of forming a labyrinth piece, comprising: Obtaining the forming requirement of the labyrinth parts; Determining a runner span and a runner height of the labyrinth piece based on the forming requirements; Determining a part forming direction of the labyrinth part based on the runner span and the runner height; and printing the labyrinth part by adopting a laser selective melting process based on the part forming direction to obtain the finally formed part.
2. The method of forming a labyrinth piece of claim 1, wherein said determining a piece forming direction of the labyrinth piece based on the runner span and the runner height comprises: and when the runner span is smaller than or equal to a preset value, determining that the part forming direction is a vertical direction.
3. The method of forming a labyrinth piece of claim 2, wherein said determining a piece forming direction of the labyrinth piece based on the runner span and the runner height comprises: And when the runner span is larger than the preset value and the runner height is smaller than or equal to the preset value, determining that the part forming direction is a horizontal direction.
4. A method of forming a labyrinth piece as claimed in claim 3, wherein the predetermined value is 7 mm.
5. A method of forming a labyrinth part as claimed in claim 3, further comprising: And when the runner span is larger than the preset value and the runner height is smaller than or equal to the preset value, arranging a corresponding auxiliary supporting part outside the labyrinth part for auxiliary forming.
6. The method of forming a labyrinth piece according to claim 5, wherein the providing of an auxiliary support member outside the labyrinth piece assists in forming, comprising: And sheet solid supports are added at two ends of the labyrinth part, wherein the thickness of the sheet solid supports is more than 1mm and less than 3mm.
7. The method of forming a labyrinth piece of claim 6, wherein the auxiliary support member is hollowed out.
8. The method of forming a labyrinth piece of claim 1, wherein said printing of said labyrinth piece using a laser selective melting process results in a final formed piece comprising: printing the labyrinth parts on a pre-laid substrate by adopting the laser selective melting process to obtain preliminarily formed parts; cleaning the surface and the inner metal powder of the primary formed part by using a vibrating platform and compressed air; Performing heat treatment on the preliminarily formed part and the substrate, and separating the preliminarily formed part and the substrate by using wire cutting; and grinding, polishing and sand blasting the preliminarily formed part separated from the substrate to obtain the finally formed part, or processing the outside of the preliminarily formed part in a machining mode.
9. A labyrinth piece forming device, comprising: the acquisition module is used for acquiring the forming requirement of the labyrinth part; A first determination module for determining a runner span and a runner height of the labyrinth piece based on the forming requirements; A second determining module for determining a part forming direction of the labyrinth part based on the runner span and the runner height; And the printing module is used for printing the labyrinth part by adopting a laser selective melting process based on the part forming direction to obtain the finally formed part.
10. An electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate via the communication bus, wherein the memory has stored thereon a computer program executable by the processor, wherein the processor executes the method of forming the labyrinth part as claimed in any one of claims 1 to 8 when the computer program is executed.

Description

Forming method, device and equipment of labyrinth type part Technical Field The invention relates to the technical field of additive manufacturing, in particular to a forming method, a forming device and forming equipment for labyrinth parts. Background The selective laser melting (SELECTIVE LASER MELTING, SLM) process belongs to additive manufacturing or 3D printing, is a mainstream additive manufacturing technology for metal materials, and is used for carrying out high-precision, high-efficiency and repeatable processing on the metal materials, and three-dimensional metal parts with high density, high precision and excellent tissue performance are obtained through processing. The labyrinth parts in the three-dimensional metal parts can be subjected to pressure reduction and speed reduction on the fluid medium under the condition of high pressure difference, and the SLM technology is adopted to manufacture the labyrinth parts. The labyrinth part comprises a multi-layer body and a plurality of flow channels arranged on the body, wherein the flow channels comprise inlets, bent parts and outlets which are sequentially arranged from the outer side to the inner side of the body. In the process of manufacturing the labyrinth parts by utilizing the traditional SLM technology, the added support of the bent part in the runner cannot be removed, and if an auxiliary support part is not arranged in the runner, the method has the following defects that (1) the condition that the upper top surface of each layer of body runner is difficult to fuse in the forming process is extremely easy to occur, special persons are required to be appointed to observe the forming state of the parts without leaving a machine, labor is consumed, (2) the abnormal condition requires unpacking treatment, and the printing environment is required to meet the printing requirement by re-washing air after unpacking, so that the final forming time of the parts is increased, the production efficiency is reduced, and (3) the unpacking polishing is also likely to damage the runner structure to cause the forming failure of the parts, and the forming rate of the parts is not high. Disclosure of Invention The invention aims to provide a forming method, a forming device and forming equipment for labyrinth parts, which are used for improving the production efficiency of the labyrinth parts. In order to achieve the above object, the present invention provides the following technical solutions: In a first aspect, the present invention provides a method of forming a labyrinth part, comprising: obtaining the product requirement of the labyrinth part; Setting the runner span and the runner height of the labyrinth part based on the product demand; when the runner of the labyrinth part is internally provided with no corresponding auxiliary supporting component for auxiliary forming, determining the part forming direction of the labyrinth part based on the runner span and the runner height; and printing the labyrinth part by adopting a laser selective melting process based on the part forming direction to obtain the finally formed part. Optionally, the determining the part forming direction of the labyrinth part based on the runner span and the runner height includes: and when the runner span is smaller than or equal to a preset value, determining that the part forming direction is a vertical direction. Optionally, the determining the part forming direction of the labyrinth part based on the runner span and the runner height includes: And when the runner span is larger than the preset value and the runner height is smaller than or equal to the preset value, determining that the part forming direction is a horizontal direction. Optionally, the preset value is 7 millimeters. Optionally, the forming method of the labyrinth part further includes: And when the runner span is larger than the preset value and the runner height is smaller than or equal to the preset value, arranging a corresponding auxiliary supporting part outside the labyrinth part for auxiliary forming. Optionally, the forming assisting of the auxiliary supporting component is arranged outside the labyrinth part, which comprises the following steps: And sheet solid supports are added at two ends of the labyrinth part, wherein the thickness of the sheet solid supports is more than 1mm and less than 3mm. Optionally, the auxiliary supporting component is hollow. Optionally, the step of printing the labyrinth part by using a laser selective melting process to obtain a final formed part includes: printing the labyrinth parts on a pre-laid substrate by adopting the laser selective melting process to obtain preliminarily formed parts; cleaning the surface and the inner metal powder of the primary formed part by using a vibrating platform and compressed air; Performing heat treatment on the preliminarily formed part and the substrate, and separating the preliminarily formed part and the substrate by using wir