Zinc impregnation processing method for cable support hanger and cable support hanger

A processing method and support and hanger technology, applied in the direction of metal material coating process, coating, solid-state diffusion coating, etc., can solve the problems of short delivery period, ability to slow down crevice corrosion, time-consuming and energy-consuming, etc., and achieve increased Crevice corrosion resistance, shortening time of sherardizing, and improvement of crevice corrosion resistance

Inactive Publication Date: 2016-05-11
TIANJIN XZB SHERARDIZING METAL PROD CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is inevitably a gap between the cable and the cable hanger, the probability of crevice corrosion is very high, and the content of zinc in the sherardized layer of the cable hanger processed by the existing method is about 60%, which has a great impact on the ability to slow down the crevice corrosion. limited
On the other hand, the thickness of the sherardized layer must exceed 60 μm to ensure sufficient corrosion resistance in this way of processing the cable support and hanger. In order to meet the thickness requirements of the sherardized layer, the entire treatment process from heating to cooling takes more than 5 hours. Hours, the highest temperature needs to exceed 400 °C, the number of cable supports and hangers required by customers in actual production is often very large, and the required delivery period is very short, the existing processing methods consume time and energy, and it is difficult to deliver on time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A cable support and hanger processed by sherardizing according to the present invention is processed by the following steps.

[0021] (1) Surface treatment of the cable support and hanger: the surface of the cable support and hanger to be treated is degreased, derusted, washed and dried, and the surface of the cable support and hanger with only slight rust can also be directly sandblasted or shot blasted .

[0022] (2) Galvanizing treatment on the surface of the cable support and hanger: put the surface-treated cable support and hanger and zinc-seeding agent into the zinc-seeding treatment container, and then place it in a heating furnace. Wherein the zinc-seeding agent consists of 30% zinc powder (200 orders) by weight, 2% metallic silicon powder (150 orders) of the zinc powder weight, 0.3% ammonium chloride of the zinc-seeding agent weight and the balance is quartz sand ( 60 mesh) prepared. Place the zinc-seeding treatment container equipped with cable hangers and z...

Embodiment 2

[0027] A cable support and hanger processed by sherardizing according to the present invention is processed by the following steps.

[0028] (1) Surface treatment of the cable support and hanger: the surface of the cable support and hanger to be treated is degreased, derusted, washed and dried, and the surface of the cable support and hanger with only slight rust can also be directly sandblasted or shot blasted .

[0029] (2) Galvanizing treatment on the surface of the cable support and hanger: put the surface-treated cable support and hanger and zinc-seeding agent into the zinc-seeding treatment container, and then place it in a heating furnace. Wherein the zinc-seeding agent consists of 35% zinc powder (250 orders) by weight, 5% metallic silicon powder (150 orders) of the zinc powder weight, 0.4% ammonium chloride of the zinc-seeding agent weight and the balance is quartz sand ( 60 mesh) prepared. Place the zinc-seeding treatment container equipped with cable hangers and z...

Embodiment 3

[0034] A cable support and hanger processed by sherardizing according to the present invention is processed by the following steps.

[0035] (1) Surface treatment of the cable support and hanger: the surface of the cable support and hanger to be treated is degreased, derusted, washed and dried, and the surface of the cable support and hanger with only slight rust can also be directly sandblasted or shot blasted .

[0036] (2) Galvanizing treatment on the surface of the cable support and hanger: put the surface-treated cable support and hanger and zinc-seeding agent into the zinc-seeding treatment container, and then place it in a heating furnace. Wherein the zinc-seeding agent consists of 40% zinc powder (300 orders) by weight, 8% metal silicon powder (150 orders) of the zinc powder weight, 0.5% ammonium chloride of the zinc-seeding agent weight and the balance is quartz sand ( 100 mesh) prepared. Place the zinc-seeding treatment container equipped with cable hangers and zin...

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Abstract

The invention provides a zinc impregnation processing method for a cable support hanger and the cable support hanger and belongs to the technical field of cable support hanger surface treatment. According to the method, the cable support hanger is firstly subjected to surface treatment, and the surface treatment comprises the steps of degreasing, rust removing, washing and drying; then the cable support hanger is placed into a zinc impregnation processing container containing a zinc impregnation agent for zinc impregnation processing, and the cable support hanger subjected to the zinc impregnation processing is subjected to cooling treatment; and finally, the cable support hanger is subjected to chemical polishing with 15% nitric acid, and silicon metal powder is added during the zinc impregnation processing. The method is short in processing time, and the crevice corrosion resistance of the treated cable support hanger is higher.

Description

technical field [0001] The invention relates to the technical field of surface treatment of cable hangers, in particular to a zinc sherardizing processing method for cable hangers and the cable hangers. Background technique [0002] Cable hangers are commonly used in cable tunnels and cable trenches. There are two types of cable hangers widely used at present: steel and fiberglass. The fiberglass material is relatively brittle and its strength has certain limitations, so the reliability of the steel cable hanger is significantly better than that of the fiberglass material. Cable supports and hangers usually serve in corrosive and harsh environments such as subways, tunnels, chemical companies or coastal cities. Steel materials are prone to corrosion in these environments, especially serious crevice corrosion occurs at the contact between cables and cable supports and hangers , which in turn affects the service life of the cable support and hanger, so it is necessary to carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C10/36C23C10/02C23C10/60
CPCC23C10/36C23C10/02C23C10/60
Inventor 姜蓓蓓阎中印黄海浪王国军刘卓辉王国梁叶光昱刘召升叶国新
Owner TIANJIN XZB SHERARDIZING METAL PROD CO LTD
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