Impeller manufacturing process method carrying out brazing and performance heat treatment in same furnace
A technology of manufacturing process and process method, which is applied in heat treatment furnaces, manufacturing tools, heat treatment equipment and other directions, can solve the problems of complex manufacturing method and high cost of centrifugal impeller with small diameter and narrow flow channel, and achieve the effect of low cost and simple process
Active Publication Date: 2020-07-14
XIAN SHAANGU POWER
View PDF13 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Aiming at the deficiencies in the prior art, the object of the present invention is to provide an impeller manufacturing process in which brazing and performance heat treatment are carried out in the same furnace, so as to solve the problem of complicated manufacturing method and high cost of small-diameter narrow-channel centrifugal impellers in the prior art. technical problem
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0041] This embodiment provides a method of manufacturing an impeller in the same furnace for brazing and performance heat treatment:
[0042] The process method uses FV520B stainless steel as the impeller material of the impeller to prepare the impeller by brazing;
[0043] In this process, the impeller is a centrifugal impeller with small diameter and narrow channel;
[0044] In this process, brazing and performance heat treatment are carried out in the same vacuum furnace.
[0045] Specifically, brazing and performance heat treatment are carried out in the same furnace process in the same vacuum furnace: the pressure in the vacuum furnace is ≤6×10 -2 Pa; Brazing temperature is 980~1100℃; Quenching temperature is 880±10℃; Tempering temperature is 610±5℃.
[0046] Specifically, the method is specifically carried out according to the following steps:
[0047] Step 1, check before brazing:
[0048] Before brazing, check the fastening of the wheel cover and the wheel disc, u...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| strength | aaaaa | aaaaa |
| tensile strength | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an impeller manufacturing process method carrying out brazing and performance heat treatment in the same furnace. According to the process method, FV520B stainless steel is used as an impeller material of an impeller for brazing to prepare the impeller; in the process method, the impeller is a small-diameter narrow-runner centrifugal impeller, and according to the process method, brazing and performance heat treatment are carried out in the same vacuum furnace. According to the impeller manufacturing process method, brazing and performance heat treatment of the impellerare executed in the same process, brazing and thermal refining of the impeller are directly completed without discharging, the impeller is not discharged out of the furnace when the tempering processis executed, tempering curve treatment is directly carried out in a vacuum brazing furnace, the process is simple, the cost is low, and other complex process methods are replaced to manufacture the impeller.
Description
technical field [0001] The invention belongs to the field of manufacturing impellers of centrifugal compressors, and relates to manufacturing impellers by brazing, in particular to an impeller manufacturing process in which brazing and performance heat treatment are carried out in the same furnace. Background technique [0002] At present, in industrial manufacturing, centrifugal compressor impellers with small diameter and narrow channel are used more and more frequently. This kind of impeller is usually manufactured by four methods, integral milling, two-body arc welding, electro-corrosion processing, and brazing methods. The overall milling is suitable for the relatively large size of the impeller flow channel, so that the machining tool can enter. The dimensional accuracy of the impeller formed by the two-body arc welding method is relatively low, and the cost of electro-corrosion processing is high. The brazing method has become one of the impeller manufacturing method...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/008B23K1/20C21D1/18C21D9/00C21D9/50
CPCB23K1/0008B23K1/008B23K1/20B23K1/206C21D1/18C21D9/0068C21D9/50
Inventor 韩增福李倩徐金张飞雄宋金柱支金花张海存郭文勇梁彦荣撒兴军安丰胜毛勇
Owner XIAN SHAANGU POWER