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A kind of preparation method of blade of impeller type hydroelectric power generation device

A power generation device, impeller-type technology, applied in turbines, mechanical equipment, transportation and packaging, etc., can solve the problems of expensive alloying elements, cost control, high process requirements, etc., achieve high strength, improve strength, and ensure the effect of microstructure

Inactive Publication Date: 2017-03-29
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER +9
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the blade must not only ensure relatively light weight, but also ensure very high strength and hardness, and at the same time ensure corrosion resistance and certain toughness, such high requirements must put forward very high requirements for the preparation process, and currently The process either requires very high process requirements, or requires the addition of very expensive alloying elements, and does not control the cost accordingly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing a blade of an impeller type hydroelectric power generation device, comprising the following steps:

[0023] (1) Stainless steel is smelted according to the blast furnace-converter-continuous casting process, and then the stainless steel is crushed to form steel powder. The content of the stainless steel is: C: 0.08%, Si: 0.68%, Mn: 0.92%, Cr : 16.8%, Mo: 3%, Ni: 6%, Cu: 2%, Nb: 0.18%, Ce: 0.05%, La: 0.023%, P: 0.01%, S: 0.005%, the balance is Fe and not Avoid impurities.

[0024] (2) Put the steel powder and binder obtained in step (1) into a mixing device in a weight ratio of 10:1.2 for uniform mixing; the binder includes: polyethylene: 152 parts , Paraffin: 1896 parts, stearic acid: 28 parts, polymethyl methacrylate molding powder: 23 parts, titanate coupling agent 3 parts.

[0025] (3) Add the mixture obtained in step (2) into the blade mold in the injection molding machine, and heat it to 182°C for injection molding.

[0026] (4) Place the ...

Embodiment 2

[0033] A method for preparing blades of an impeller type hydroelectric power generation device, comprising the following steps.

[0034] (1) Stainless steel is smelted according to the blast furnace-converter-continuous casting process, and then the stainless steel is crushed to form steel powder. The content of the stainless steel in terms of weight percentage is: C: 0.11%, Si: 0.69%, Mn: 1.1%, Cr : 16.9%, Mo: 3.8%, Ni: 6.2%, Cu: 2.2%, Nb: 0.28%, Ce: 0.03%, La: 0.026%, P: 0.003%, S: 0.001%, the balance is Fe and not Avoid impurities.

[0035] (2) Put the steel powder and binder obtained in step (1) into a mixing device in a weight ratio of 10:1.6 for uniform mixing; the binder includes: polyethylene: 132 parts , paraffin wax: 192 parts, stearic acid: 26 parts, polymethyl methacrylate molding powder: 25 parts, titanate coupling agent 3 parts.

[0036] (3) Add the mixture obtained in step (2) into the blade mold in the injection molding machine, and heat to 192°C for injectio...

Embodiment 3

[0044] A blade of an impeller type hydroelectric power generation device is obtained by the method of Embodiment 1 or 2, and its cross section is set to be arc-shaped.

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PUM

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Abstract

The invention relates to a method for preparing blades of an impeller-type hydroelectric power generation device, which belongs to the field of hydroelectric power generation accessories. By rationally setting the raw materials, overall process and heat treatment method of the blade preparation method, the strength and corrosion resistance of the obtained blades can be greatly improved. As a result, the durability and economy of hydroelectric power generation devices are generally improved.

Description

technical field [0001] The invention belongs to the field of new energy power generation and powder metallurgy, in particular to the field where components of hydroelectric power generation devices are prepared by powder metallurgy, and in particular relates to a method for preparing blades of impeller-type hydroelectric power generation devices. Background technique [0002] As a new energy generation method, hydropower generation has attracted more and more attention from the policy level and the scientific community, and the in-depth and detailed research on its various components is also being carried out extensively. Among them, the blade shape, material, etc. There have been many studies in recent years. Since the blade must not only ensure relatively light weight, but also ensure very high strength and hardness, and at the same time ensure corrosion resistance and certain toughness, such high requirements must put forward very high requirements for the preparation pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/48C22C38/44C22C38/42C22C38/04C22C38/02C22C33/02B22F3/22B22F5/04B22F1/00B22F3/10
CPCC22C33/0285C22C38/005C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48B22F3/1021B22F3/225B22F5/04B22F2998/10B22F1/103B22F1/10B22F2003/248B22F9/04
Inventor 马颖魏温芝郑琦申振龙姜志强赵全成孔笑峰刘元永胡翔施展刘博
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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