Machining method for three-dimensional flow impeller

A processing method and ternary flow technology, applied in the field of fan manufacturing, can solve the problems of material waste, the manufacturing process of impeller and wheel cover has not been greatly improved, and the cost of fan manufacturing is increased, so as to achieve rigorous process, avoid product quality decline, The effect of improving processing efficiency

Active Publication Date: 2016-01-27
湖北双剑鼓风机股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this invention, the manufacturing process of the impeller and the wheel cover has not been greatly improved. The impeller and the blade are integrally processed and formed on the integral forging, and the wheel cover is also processed by the integral forging. Although this greatly improves the processing efficiency, but It causes a serious waste of materials and increases the production cost of the fan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] A processing method for a ternary flow impeller, characterized in that it comprises the following steps:

[0023] 1) Preparation of wheel cover: ① blanking of wheel cover and inlet ring; ② molding of front panel with mold; ③ turning of inlet ring; ; ⑥ heat treatment; ⑦ inspection;

[0024] 2) Preparatory work before impeller assembly: ① Prepare the wheel cover and wheel disc; ② Hot press forming of the blade;

[0025] 3) Welding of the wheel cover and the blade: ① Mark the left and right wheel covers and punch holes; ② Grind the weld bevel of the blade; ③ Weigh and number the blades; Qualified; ⑤ Spot weld the reinforcing ring at the inner and outer circle of the blade; ⑥Put the wheel cover into the electric furnace to preheat to 200°C and keep it warm for 2 hours; ⑦Lift the wheel cover out for open welding; Preheat again until the welding is completed; ⑨Tempering after welding to eliminate welding stress; ⑩Grinding the weld seam for a smooth transition and coloring t...

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PUM

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Abstract

The invention discloses a machining method for a three-dimensional flow impeller. An original whole forging of a wheel cover is changed into a panel, the wheel cover is formed through a die and spliced with an inlet ring in a welding manner, then, the wheel cover and blades manufactured in advance are spliced and formed, finally, a wheel disc and the wheel cover are welded and formed, and finish turning is carried out after thermal treatment. An impeller and the blades are independently manufactured and spliced together through spliced welding. Compared with the traditional technology, by means of the whole forging forming, the integral strength cannot be changed, the consumption of raw materials is greatly reduced through the new technology, the machining difficulty is lowered, and the machining efficiency is improved.

Description

technical field [0001] The invention relates to the field of fan manufacturing, in particular to a processing method for a three-dimensional flow impeller. Background technique [0002] A large number of ternary closed-type impellers are used in compressors. The characteristics of this impeller are: large blade distortion, narrow passage, and large curvature of the rotating surface of the shaft disk and cover disk, which are difficult to solve by traditional processing technology. [0003] The traditional three-element closed impeller is welded together after multiple pieces are processed. The blank is composed of the wheel cover forging blank and the wheel disc forging blank. Semi-finished turning to the required shape; then the forging blank of the roulette is clamped on the lathe, and the rough turning and semi-finishing are turned to the required shape; then the roulette is mounted on the milling machine, and the blades are milled on the roulette, and then Weld the mill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/04
CPCB23P15/04
Inventor 闻诗明
Owner 湖北双剑鼓风机股份有限公司
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