CN202659258U - Mine hydraulic bracket with thermal spraying coating - Google Patents
Mine hydraulic bracket with thermal spraying coating Download PDFInfo
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- CN202659258U CN202659258U CN201220310159XU CN201220310159U CN202659258U CN 202659258 U CN202659258 U CN 202659258U CN 201220310159X U CN201220310159X U CN 201220310159XU CN 201220310159 U CN201220310159 U CN 201220310159U CN 202659258 U CN202659258 U CN 202659258U
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- hydraulic bracket
- mine hydraulic
- coating
- mine
- spraying
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Abstract
The utility model discloses a mine hydraulic bracket with a thermal spraying coating. A zinc-aluminum alloy coating is arranged on the surface of the mine hydraulic bracket; according to the zinc-aluminum alloy coating, zinc-aluminum alloy is in wiredrawing by adopting electric arc spraying, and then the electric arc spraying is carried out on the surface of the mine hydraulic bracket to obtain ideal surface performance; and the spraying can be carried out in the open, in construction sites or in workshops. By utilizing the mine hydraulic bracket, the corrosion rate of the mine hydraulic bracket can be effectively lowered, and the service life of the mine hydraulic bracket is prolonged.
Description
Technical field
The utility model relates to a kind of mine hydraulic bracket, especially a kind of mine hydraulic bracket that hot-spraying coating is arranged.
Background technology
Hydraulic support is as one of most important equipment of comprehensive mechanical coal mining, hydraulic support is in the working face mining process, need long-term bearing load and constantly motion, and Minepit environment has very strong corrosivity to steel construction piece, these intensity to timbering material, abrasion resistance, corrosion resistance and anti-fatigue performance etc. all have higher requirement, therefore, and the material of supporting structure spare, high-intensityly simultaneously enough corrosion resistances and abrasion resistance should be arranged having, thereby the long-term safety that guarantees support is used.The used sheet material of hydraulic support is basically take Hi-Stren steel as main, China's hydraulic support structural member adopts the 16Mn low alloy steel plate mostly, column and jack mostly adopt 35 steel, 25CrMo, 25CrMo4 and the 40Cr equal strength is high, solderability is good steel, if but these materials improve its anticorrosion antiwear without certain processing, just be difficult to reach the instructions for use of mine.
Because hydraulic support is very complicated at the actual condition of down-hole, the situation that contacts of set cap and top board and roof pressure size and active position are all constantly in change at random, and the environment of down-hole has very strong corrosivity in addition.The failure mode of support mainly is that the corrosive wear by supporting structure spare causes.The adverse circumstances of work plane are also brought very large impact to the life-span of upright post jack, and its failure mode is mainly caused by the support corrosion under the mine particular surroundings.Be exactly the down-hole specifically because the hydraulic support work under bad environment is adopted, digs, opens work plane in the down-hole, a large amount of gas of can from coal seam and rock stratum, gushing out, in the gas except CH
4Also there is a large amount of SO outward,
2, H
2S, Cl
-, SO
2- 4Deng corrosive medium, and envionmental humidity causes hydraulic support component macro-corrosion to lose efficacy generally more than 75%.Seam construction is complicated on the other hand, and support deflection load-bearing stress, periodic weighting, the bad working environments such as tomography of blowing out happen occasionally, and come damaging influence also for the hydraulic pressure supporting band.These factors are on main action and the load bearing component of hydraulic support---the impact of column is particularly evident, and general column uses 1 ~ 3 a just to need the gug overhaul even scraps, and brings huge economic loss to enterprise.
Electrodeposited chromium is a kind of traditional Electroplating Technology for Surface, is widely applied at present above the mine hydraulic bracket, and chromium coating hardness is high, wear-resisting, anti-corrosion and can keep for a long time surface-brightening, and technique is relatively simple, and cost is lower.Yet electroplating hard chromium process can cause serious environmental problem, the chromic acid solution that chrome-plated process uses, and generation contains acid mist and waste water.Durionise coating also has and has micro-crack in the chromium coating in addition, and the electroplating technology deposition velocity waits shortcoming slowly.Simultaneously under the complex environment under the ore deposit, in a single day the destruction of any appear in the durionise layer in addition, because the effect of electrochemical corrosion will much produce large-area etching problem, this shows the coating of seeking the replacing electroplating hard chrome and be applied on the mine hydraulic bracket highly significant and necessary.
The main shortcoming of current mine hydraulic bracket is:
The electrodeposited chromium technology that mine hydraulic bracket adopts at present; play opposite effect from the angle of electrochemical protection; in a single day the destruction of any appear in the durionise layer; because the effect of electrochemical corrosion; large-area etching problem be will much produce, the large tracts of land coating shedding on mine hydraulic bracket surface and the corrosion failure of mine hydraulic bracket caused.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of mine hydraulic bracket that hot-spraying coating is arranged is provided, and it can reduce the corrosion rate of mine hydraulic bracket effectively, prolongs the application life of mine hydraulic bracket.
For achieving the above object, the utility model adopts following technical proposals:
A kind of mine hydraulic bracket that hot-spraying coating is arranged arranges one deck allumen coating on the surface of described mine hydraulic bracket.
Described allumen coating adopts electric arc spraying the allumen wire drawing, then carries out electric arc spraying on the surface of mine hydraulic bracket, to obtain desirable surface property.This spraying can be in the open, carry out in building site or the factory building.Wherein, adopting electric arc spraying is the allumen wire drawing routine techniques, does not repeat them here.
The beneficial effects of the utility model are can effectively reduce the corrosion rate of mine hydraulic bracket, the application life of prolongation mine hydraulic bracket.
Description of drawings
Fig. 1 is vertical sectional drawing of the present utility model;
Fig. 2 is horizontal type sectional drawing of the present utility model;
1-mine hydraulic bracket wherein, 2-allumen coating.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, 2, the mine hydraulic bracket of hot-spraying coating is arranged, one deck allumen coating 2 is set on the surface of described mine hydraulic bracket 1.Described allumen coating 2 adopts electric arc spraying the allumen wire drawing, then carries out electric arc spraying on the surface of mine hydraulic bracket 1, to obtain desirable surface property.This spraying can be in the open, carry out in building site or the factory building.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (1)
1. the mine hydraulic bracket that hot-spraying coating is arranged is characterized in that, one deck allumen coating is set on the surface of described mine hydraulic bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220310159XU CN202659258U (en) | 2012-06-29 | 2012-06-29 | Mine hydraulic bracket with thermal spraying coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220310159XU CN202659258U (en) | 2012-06-29 | 2012-06-29 | Mine hydraulic bracket with thermal spraying coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659258U true CN202659258U (en) | 2013-01-09 |
Family
ID=47454168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220310159XU Expired - Fee Related CN202659258U (en) | 2012-06-29 | 2012-06-29 | Mine hydraulic bracket with thermal spraying coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194113A (en) * | 2017-12-12 | 2018-06-22 | 昆山中士设备工业有限公司 | A kind of hydraulic prop for mine and its manufacturing method |
-
2012
- 2012-06-29 CN CN201220310159XU patent/CN202659258U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194113A (en) * | 2017-12-12 | 2018-06-22 | 昆山中士设备工业有限公司 | A kind of hydraulic prop for mine and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |