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Production technology of explosion-proof and corrosion-proof motor casing

A production process and motor casing technology, which is applied in the direction of casing/cover/support, electromechanical devices, electrical components, etc., can solve the problems of rough appearance of motor casing blanks, inability to meet anti-corrosion and explosion-proof, and many trachoma pores, etc., to achieve Beautiful appearance, stable size, and high anti-corrosion effect

Inactive Publication Date: 2014-03-12
SHANDONG YUANTONG MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of the production method are that the obtained motor shell blank has rough appearance, many sand holes and pores, many waste products, and is easy to corrode, and the product cannot meet the special requirements of anti-corrosion and explosion-proof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, an explosion-proof and anti-corrosion motor casing adopts the core casting process, and the preparation method is as follows:

[0023] Use 30-50 mesh desert scrubbing sand, add 1.2% furan resin and 0.4% toluenesulfonic acid curing agent of desert scrubbing sand quality, and mix it with continuous sand mixer to obtain core. After coating the refractory coating of alcohol-based graphite coating, the core is assembled, and the bottom pouring rain pouring is adopted. The runner is made of refractory ceramic tube, and the molten iron is smelted in a coreless intermediate frequency induction furnace. The molten iron contains 0.3%wt copper. Casting is carried out to obtain the casting blank, and after cleaning, the blank is first sprayed with epoxy zinc-rich primer 50μm, then sprayed with epoxy primer 100μm, and finally sprayed with epoxy topcoat 60μm, anti-corrosion spraying, and finally after mechanical processing and inspection Obtain the finished explos...

Embodiment 2

[0026] In this embodiment, an explosion-proof and anti-corrosion motor casing adopts the core casting process, and the preparation method is as follows:

[0027] Use 30-50 mesh desert scrubbing sand, add 1.1% furan resin and 0.5% toluenesulfonic acid curing agent of desert scrubbing sand quality, and mix with continuous sand mixer to obtain core. After coating the refractory coating of alcohol-based graphite coating, the core is assembled, and the bottom pouring rain pouring is adopted. The runner is made of refractory ceramic tube, and the molten iron is smelted in a coreless intermediate frequency induction furnace. The molten iron contains 0.6%wt copper, and the casting is carried out Obtain the casting blank, and after cleaning, spray the epoxy zinc-rich primer 60μm on the blank first, then spray the epoxy primer 110μm, and finally spray the epoxy topcoat 50μm, carry out anti-corrosion spraying, and finally obtain after mechanical processing and inspection Finished explosi...

Embodiment 3

[0030] In this embodiment, an explosion-proof and anti-corrosion motor casing adopts the core casting process, and the preparation method is as follows:

[0031] Use 30-50 mesh desert scrubbing sand, add 1.0% furan resin and 0.6% toluenesulfonic acid curing agent of desert scrubbing sand quality, and mix it with continuous sand mixer to obtain core. After coating the refractory coating of alcohol-based graphite coating, the core is assembled, and the bottom pouring rain pouring is adopted. The runner is made of refractory ceramic tube, and the molten iron is smelted by a coreless intermediate frequency induction furnace. The molten iron contains 0.7%wt copper, and the casting is carried out Obtain the casting blank, and after cleaning, spray the epoxy zinc-rich primer 80μm on the blank first, then spray the epoxy primer 140μm, and finally spray the epoxy topcoat 70μm, carry out anti-corrosion spraying, and finally obtain after mechanical processing and inspection Finished expl...

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Abstract

The invention belongs to the field of motor casing production, and relates to a production technology of an explosion-proof and corrosion-proof motor casing. The production technology comprises the steps that a core is obtained by a core assembly casting technology and a phenolic sand molding core making method; the core is subjected to fire-proof paint flow coating and core assembly; bottom pouring and rain pouring are adopted; a pouring channel adopts a fire-proof ceramic tube; iron liquid is smelted by an electric furnace; pouring is performed; a casting blank is obtained; the blank is cleaned, then subjected to corrosion-proof spraying, and finally machined and inspected; and the finished explosion-proof and corrosion-proof motor casing is obtained. The production technology is high in finished product obtaining rate; and the motor casing is attractive in appearance, stable in performance, high in explosion-proof pressure, stable in dimension and high in corrosion-proof capacity, and meets a requirement of a special motor in the petrochemical industry.

Description

technical field [0001] The invention belongs to the field of motor shell production, and in particular relates to a production process of an explosion-proof and anti-corrosion motor shell. Background technique [0002] At present, in the field of motor shell production, the main process method is to obtain the blank of the motor shell after pouring molten iron through the original clay sand molding, after cleaning and spraying ordinary anti-rust paint, and then machining to obtain the finished motor shell parts. When the motor housing is used in the petrochemical industry, it is required that the motor housing has good explosion-proof performance and corrosion resistance to ensure safety; when used in an extremely cold environment where the minimum ambient temperature reaches -40°C, the motor housing is required to have good explosion-proof performance And anti-corrosion to ensure safety; explosion-proof, anti-corrosion motor housing, marine motors used in marine environment...

Claims

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Application Information

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IPC IPC(8): B22C9/24B22C9/08B22C1/02B05D7/14H02K5/00
Inventor 周仕勇李兴华
Owner SHANDONG YUANTONG MASCH CO LTD
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