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Electrical conduit and preparation method thereof

A conduit and electrical technology, applied in the field of electrical conduit and its preparation, can solve problems such as poor corrosion resistance and difficulty in meeting building construction requirements, and achieve the effects of improving corrosion performance requirements, delaying corrosion, and meeting electrical requirements.

Inactive Publication Date: 2019-07-05
天津市萧山管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide an electrical conduit, which aims to solve the technical problem that the existing JDG pipes mentioned in the above background technology still have poor corrosion resistance, which makes it difficult to meet the requirements of building construction

Method used

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  • Electrical conduit and preparation method thereof
  • Electrical conduit and preparation method thereof
  • Electrical conduit and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Soaking the rolled-formed tubular hot-rolled steel strip in 20% hydrochloric acid for 10 minutes to clean it;

[0041] Immersing the cleaned tubular hot-rolled steel strip in a NaOH solution with a water temperature of 60°C and a concentration of 10% for degreasing;

[0042] Immerse the degreased tubular hot-rolled steel strip in the molten zinc solution for 30 seconds, take it out and cool it to form a hot-dip galvanized layer;

[0043] Immerse the hot-dip galvanized tubular hot-rolled steel strip in an electroplating solution with a pH of 4.5 and electroplate for 5 minutes to form an electrogalvanized layer, wherein the electroplating solution is an acid electroplating solution of potassium chloride, including 40% concentration of chloride Zinc, 30% concentration of potassium chloride and 30% concentration of boric acid, control the anode current density to 1A / dm during the electroplating process 2 , the cathode current density is 1A / dm 2 ;

[0044] The tubular hot...

Embodiment 2

[0049] Soaking the rolled-formed tubular hot-rolled steel strip in 30% hydrochloric acid for 5 minutes to clean it;

[0050] Immersing the cleaned tubular hot-rolled steel strip in a NaOH solution with a water temperature of 50°C and a concentration of 20% for degreasing;

[0051] Immerse the degreased tubular hot-rolled steel strip in the molten zinc solution for 60 seconds, take it out and cool it to form a hot-dip galvanized layer;

[0052] Immerse the hot-dip galvanized tubular hot-rolled steel strip in an electroplating solution with a pH of 5.5 and electroplate for 3 minutes to form an electrogalvanized layer, wherein the electroplating solution is an acidic electroplating solution of potassium chloride, including 50% concentration of chloride Zinc, 25% concentration of potassium chloride and 25% concentration of boric acid, control the anode current density to 3.2A / dm during the electroplating process 2 , the cathode current density is 5A / dm 2 ;

[0053] Immerse the ...

Embodiment 3

[0057] Washing the rolled-formed tubular hot-rolled steel strip by immersing it in 25% hydrochloric acid for 7.5 minutes;

[0058] Immersing the cleaned tubular hot-rolled steel strip in a NaOH solution with a water temperature of 55°C and a concentration of 15% for degreasing;

[0059] Immerse the degreased tubular hot-rolled steel strip in the molten zinc solution for 45s, take it out and cool it to form a hot-dip galvanized layer;

[0060] Immerse the hot-dip galvanized tubular hot-rolled steel strip into an electroplating solution with a pH of 5 and electroplate for 4 minutes to form an electro-galvanized layer, wherein the electro-plating solution is an acidic electro-galvanizing solution of potassium chloride, including 45% concentration of chloride Zinc, potassium chloride at a concentration of 25% and boric acid at a concentration of 30%, the anode current density is controlled at 2A / dm during the electroplating process 2 , the cathode current density is 3A / dm 2 ;

...

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Abstract

The invention is applicable to the technical field of material processing, and provides an electrical conduit and a preparation method thereof. The electrical conduit comprises tubular strip steel, azinc plating layer, a passivation film layer and an inorganic sealing layer, wherein the tubular strip steel is attached to the surface of the inner and outer tube walls of the tubular strip steel; the passivation film layer is attached to the surface of the zinc plating layer; and the inorganic sealing layer is attached to the surface of the passivation film layer. The electrical conduit providedby the embodiment is protected by the three-layer protective film layer, so that the corrosion resistance of the electrical conduit can be effectively improved, compared with a commercially availablecommon JDG electrical conduit, the corrosion resistance can be greatly enhanced, in addition, the electrical property of the electrical conduit is also met, so that the electrical conduit has strongapplication value.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to an electrical conduit and a preparation method thereof. Background technique [0002] Electrical conduit is a kind of conduit for electrical circuit protection, which is widely used in the construction field. At present, electrical conduits generally use JDG pipes (socket tight galvanized steel conduits). Compared with traditional PVC pipes (polyvinyl chloride pipes) and SC pipes (common welded steel pipes), JDG pipes overcome the limitations of ordinary metal conduits. In addition to the shortcomings of complex construction and large construction losses, it also solves the problems of poor fire resistance and difficult grounding of PVC pipes. [0003] However, the JDG pipes sold in the existing market generally use hot-dip galvanized prefabricated steel strips as raw materials, and use high-frequency welding technology to manufacture JDG hot-dip galvaniz...

Claims

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Application Information

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IPC IPC(8): C23C2/02C23C2/06C23C2/38C23C28/00C25D3/22C25D7/04C23C22/05
CPCC23C2/02C23C2/06C23C2/38C23C22/05C23C28/3225C23C28/34C25D3/22C25D7/04
Inventor 楼小龙
Owner 天津市萧山管业有限公司
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