Preparation method of submersible pump shaft

A submersible pump and pump shaft technology, applied to pumps, pump components, mechanical equipment, etc., can solve problems such as poor water flow and affect the efficiency of water pumps, and achieve the effects of reducing contamination, improving mechanical properties, and increasing mold life

Inactive Publication Date: 2016-03-02
高鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the inlet of the pump body is horizontal and the inlet of the pump shaft is vertical, the liquid will have a 90-degree turn when flowing from the inlet of the pump body into the inlet of the pump shaft, especially a vortex will be formed under the inlet of the pump shaft , leading to poor water flow and affecting pump efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] A method for preparing a pump shaft of a submersible pump, comprising the following process steps:

[0027] a. Pouring pump shaft blank step

[0028] The weight percentage of each chemical composition in the pump shaft blank is: C2.25%, Mn1.9%, Si1%, Cr0.75%, Co0.28%, B0.2%, Ti0.75%, Cu0.18%, P0 .018%, S0.008%, the balance is Fe and unavoidable inclusions;

[0029] b. Forging and forming steps

[0030] When forging, light hammer should be hit slowly, repeated upsetting and pulling, to crush the core structure of the material, the initial forging temperature is controlled at 1000-1050 ℃, the final forging temperature is 800-850 ℃, two-fire forming, the forging ratio is 3-4, After forging, use rapid cooling to 300-350°C and then pit cooling or sand cooling;

[0031] c. Surface treatment steps

[0032] Spraying treatment, anti-rust treatment of the pump shaft: at a temperature of 105-115 ° C, spray an anti-rust paint with a thickness of 0.2-0.8 mm on the surface of the...

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PUM

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Abstract

The invention discloses a preparation method of a submersible pump shaft. The method comprises the following technological step of a, casting a pump shaft blank, wherein the pump shaft blank comprises, by weight percent, 2.15%-2.35% of C, 1.3%-2.5% of Mn, 0.8%-1.2% of Si, 0.6%-0.9% of Cr, 0.22%-0.35% of Co, 0.15%-0.25% of B, 0.55%-0.95% of Ti, 0.14%-0.22% of Cu, 0.012%-0.023% of P, 0.006%-0.01% of S and the balance Fe and unavoidable inclusion. Mass industrial production is better achieved, phenomena of dirt clamping and inflation dissatisfaction in the forging process are reduced, the mechanical property of products is further improved, product raw materials are saved, and the rust-proof antioxidant service life of the pump shaft is prolonged.

Description

technical field [0001] The invention relates to the field of submersible pump preparation, in particular to a method for preparing a submersible pump shaft. Background technique [0002] The submersible pump is mainly composed of motor, pump body, pump shaft, pump cover and other parts, among which the main factor affecting the efficiency of the pump is the pump shaft. Since the inlet of the pump body is horizontal and the inlet of the pump shaft is vertical, the liquid will have a 90-degree turn when it flows from the inlet of the pump body into the inlet of the pump shaft, especially a vortex will be formed under the inlet of the pump shaft , leading to poor water flow and affecting the efficiency of the pump. Developing a pump shaft with better mechanical properties is a new research direction. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing the pump shaft of a submersible pump, which is beneficial to large-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/043F04D29/02C22C37/10B21K1/06B05D3/02C09D127/06C09D5/08C09D7/12
CPCB05D3/0281B21K1/06C08L2205/03C09D5/08C09D127/06C22C37/10F04D29/026F04D29/043F05D2300/17C08L1/28C08K13/02C08K2003/2241C08K3/34
Inventor 高鹏
Owner 高鹏
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