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Impellers (rotor)of Root's blower manufacturing method

A technology of Roots blower and manufacturing method, which is applied in the direction of mechanical equipment, machine/engine, liquid fuel engine, etc., can solve problems such as complicated production process, and achieve the effects of saving energy consumption, low casting temperature, and reducing air volume loss

Inactive Publication Date: 2006-11-22
王绍全
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method of manufacturing a rotor using zinc-based alloy as a raw material in order to overcome the existing problems of the rotor made of cast iron and the disadvantages of the current complicated production process.

Method used

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  • Impellers (rotor)of Root's blower manufacturing method
  • Impellers (rotor)of Root's blower manufacturing method

Examples

Experimental program
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Embodiment Construction

[0018] Its manufacturing method is:

[0019] Preheat the upper and lower templates 3 and 1 of the mold, the cavity mold 2, and the core to 180-200°C, apply a release agent after heating, and then fix the cavity mold 2 on the lower template 1 first, install Insert the core, cover the upper template 3, fix the pouring sleeve, pour the alloy smelted according to the general method into the mold, the casting temperature is 450°C, open the mold after hardening and take out the finished product, the casting is quenched at 180°C and placed at room temperature for 48 Available in hours.

[0020] After the mold is opened, the mold is coated with a release agent, the mold is closed for secondary casting, and the mold does not need to be reheated.

[0021] In the above method, the release agent is water glass plus talcum powder to prepare gruel.

[0022] Shown in Fig. 1, 2, 3 is this Roots blower impeller (rotor) production mold. The details are as follows:

[0023] This Roots...

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Abstract

The invention discloses a manufacturing method of a Roots blower impeller or rotor. The manufacturing method is to preheat the template, cavity and core of the mold to 180-200°C, apply a release agent after heating, then fix the cavity on the lower template, load the core, and cover it. Formwork, fix the pouring sleeve, pour the alloy smelted according to the general method into the mold, the casting temperature is 450°C, after hardening, open the mold and take out the finished product, the casting is quenched at 180°C and placed at room temperature for 48 hours; the mold after mold opening Apply release agent, close the mold for secondary casting, and the mold does not need to be reheated. The alloy of the invention has low smelting temperature, simple casting process, is convenient for recycling and back casting, and better realizes resource reuse.

Description

technical field [0001] The invention relates to a manufacturing method of a Roots blower impeller or rotor. Background technique [0002] The impeller or rotor of the Roots blower has not changed much in structure over the years. From the original double-lobe type to the current three-lobe type, the processing difficulty has increased after the improvement. The current three-lobe rotor is made of cast iron, which has disadvantages of low strength, low hardness, small expansion coefficient, easy loss of air volume, high melting temperature of cast iron, and high consumption of raw materials. At the same time, the conventional processing method of the existing Roots blower impeller is: according to the actual size of the impeller plus a large enough machining allowance, cast a solid blank with 200# cast iron, and enter the machining process after the blank is tempered. The process is as follows: Milling two end faces—scribing—drilling—boring—pull key—rough planing—finish plan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C18/04F04D29/18F04D29/26F04D29/02
Inventor 王绍全
Owner 王绍全
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