Compressor impeller machining method

A compressor impeller and processing method technology, which is applied in the field of compressor manufacturing, can solve the problems of low impeller strength, complex processing procedures, waste of resources, etc., and achieve the effects of reducing processing difficulty, improving processing efficiency, and saving costs

Inactive Publication Date: 2020-03-24
常州市庆中风机制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned traditional processing technology has more rough materials, resulting in waste of resources; the processing process is complicated, and there are welding defects; the welded impeller has low strength and poor corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The present invention comprises the following steps:

[0014] A. Preparing metal alloy materials according to the designed ratio for smelting, then pouring with a mold, turning the position of the inlet ring, and then demoulding to obtain the impeller blank;

[0015] B. The impeller blank is then heat-treated, the impeller is heated to quenching, and then the weld is smooth and transitioned through grinding and coloring to check whether there are defects in the weld and repair welding. After welding, it is tempered to eliminate welding stress, and finally it is air-cooled;

[0016] C. After turning the machine to process the finish car, the position of the impeller is corrected;

[0017] D. The surface is roughened, and then the surface is activated;

[0018] E. Thermal spraying wear-resistant coating on the surface of the impeller in step D.

[0019] The reinforcing ring is spot-welded at the inner and outer circles of the impeller described in the above technical so...

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PUM

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Abstract

The invention relates to a compressor impeller machining method, which comprises the steps of: A, preparing a metal alloy material according to a designed proportion for blanking and smelting, pouringby using a mold, turning the position of an inlet ring, and demolding to obtain an impeller blank; B, subjecting the impeller blank to heat treatment, heating the impeller to the quenching temperature, then subjecting weld joints to coping, smooth transition and coloring inspection to check whether defects exist in the weld joints or not and carry out repair welding, tempering after welding to eliminate welding stress, and finally discharging the impeller from the furnace for air cooling; C, correcting a position of the impeller after machining and finish turning by means of a rotating machine; D, and subjecting the surface to roughening treatment, and carrying out surface activating treatment; and E, and thermally spraying a wear-resistant coating on the surface of the impeller in the step D. According to the compressor impeller machining method, the overall strength is not changed, the loss of raw materials is greatly reduced by adopting the new process, the machining difficulty isreduced, the machining efficiency is improved, and the cost is saved.

Description

technical field [0001] The invention relates to the field of compressor manufacturing, in particular to a processing method for a compressor impeller. Background technique [0002] The traditional impeller is welded together after many parts are processed. The blank is composed of the wheel cover forging blank and the wheel disc forging blank. The required shape; then put the forging blank of the wheel disc on the lathe, rough turn and semi-finish turning to the required shape; then install the wheel disc on the milling machine, mill the impeller on the wheel disc, and then mill the completed The impeller and the wheel cover are welded together for stress relief, and finally the impeller is finished. The above-mentioned traditional processing technology has more rough materials, resulting in waste of resources; the processing procedure is complicated, and there are welding defects; the welded impeller has low strength and poor corrosion resistance. Contents of the inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 汪小忠
Owner 常州市庆中风机制造有限公司
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