CN105751080A - Sand blasting derusting process for pressure pipeline - Google Patents
Sand blasting derusting process for pressure pipeline Download PDFInfo
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- CN105751080A CN105751080A CN201410762031.0A CN201410762031A CN105751080A CN 105751080 A CN105751080 A CN 105751080A CN 201410762031 A CN201410762031 A CN 201410762031A CN 105751080 A CN105751080 A CN 105751080A
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- sand
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- pipeline
- sandblasting
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Abstract
The invention discloses a sand blasting derusting process for a pressure pipeline. The process is characterized by comprising the requirements that: (1) sand has to be subjected to washing, screening and drying to make it free of soil sundries and the moisture content less than 1%; (2) the sand for sand blasting has to be hard and edged and has a particle size of 1-3mm; (3) qualified sand is loaded into a sand tank to an upper limit of 2/3 of the volume, outlet valves of the sand tank and a gas storage tank and valves on the pipeline are all closed, an air compressor is started, the gauge pressure is maintained at about 0.49MPa, all the valves and nozzles are opened, the wind pressure is quickly adjusted to 0.4Mpa to perform sand blasting, the nozzles and a sand blasted surface are in an angle of 50-75 degrees, and a spacing of 100-200mm is maintained, the nozzles are moved evenly, and silver gray metal luster arises on the sand blasted surface; and (4) the nozzles for sand blasting to the pipeline inner wall are conical nozzles cast by cast iron or made from No.45 steel, the nozzles are oval 10mm long shafts and 5mm short shafts. The process provided by the invention has the advantages of reasonable procedure, low cost, reasonable and coordinating parameter collocation, short time and simple operation.
Description
Technical field
The present invention relates to the derusting by sandblasting technique of a kind of pressure pipeline.
Background technology
Pressure pipeline refers to and all bears intrinsic pressure or external pressure pipeline, regardless of medium in its pipe.Pressure pipeline is the part in pipeline, pipeline is in order to carry, distribute, mix, separate, discharge, measure, control and to prevent fluid flowing, the assembly being made up of pipe, pipe fitting, flange, bolt connection, pad, valve, other component parts or pressure-containing parts and supporting member.Pressure pipeline is owing to belonging to steel part, and the problem usually occurring getting rusty very much, and the derusting by sandblasting process program of existing pressure pipeline, and its procedure arrangement is unreasonable, operation is various, the time is long, can not meet requirement, it is necessary to improved to improve performance.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to provide that a kind of operation is reasonable, simple to operate, the time is short, the derusting by sandblasting technique of the pressure pipeline of low cost of manufacture.
For achieving the above object, the invention provides the derusting by sandblasting technique of a kind of pressure pipeline, it is characterized in that, including following requirement:
(1) sand should through washing, screening, drying so that it is without earth foreign material, moisture content < 1%；
(2) sand used by sandblasting must hard, band rib, particle diameter between 1-3 mm；
(3) the interior valve Close All ten on the outlet valve that the 2/3 of volume is the upper limit → sand tank and gas tank and pipeline of qualified sand loading sand tank starts air compressor machine, gauge pressure is made to be maintained at about 0.49MPa → open each valve and nozzle, rapidly blast is adjusted to 0.4Mpa → sandblasting, nozzle is 50-75 ° of angle with being grit blasted surface, and keeps the moving nozzle of 100 200mm spacing → uniformly → be grit blasted surface silver gray metallic luster occur；
(4) conical nozzle that is that the nozzle used by tube wall sandblasting be should be cast iron or that make with No. 45 steels, mouth end ovalize major axis 10mm, short axle 5mm.
The invention has the beneficial effects as follows: operation of the present invention is reasonable, each parameter collocation reasonable coordination, the time is short, simple to operate, improves product quality, and then the time of minimizing and cost, quick, economical by the derusting by sandblasting technique of the pressure pipeline of this method, and effective.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
The derusting by sandblasting technique of a kind of pressure pipeline, is characterized in that, including following requirement:
(1) sand should through washing, screening, drying so that it is without earth foreign material, moisture content < 1%；
(2) sand used by sandblasting must hard, band rib, particle diameter between 1-3 mm；
(3) the interior valve Close All ten on the outlet valve that the 2/3 of volume is the upper limit → sand tank and gas tank and pipeline of qualified sand loading sand tank starts air compressor machine, gauge pressure is made to be maintained at about 0.49MPa → open each valve and nozzle, rapidly blast is adjusted to 0.4Mpa → sandblasting, nozzle is 50-75 ° of angle with being grit blasted surface, and keeps the moving nozzle of 100 200mm spacing → uniformly → be grit blasted surface silver gray metallic luster occur；
(4) conical nozzle that is that the nozzle used by tube wall sandblasting be should be cast iron or that make with No. 45 steels, mouth end ovalize major axis 10mm, short axle 5mm.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.All technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (1)
1. a derusting by sandblasting technique for pressure pipeline, is characterized in that, including following requirement:
(1) sand should through washing, screening, drying so that it is without earth foreign material, moisture content < 1%；
(2) sand used by sandblasting must hard, band rib, particle diameter between 1-3 mm；
(3) the interior valve Close All ten on the outlet valve that the 2/3 of volume is the upper limit → sand tank and gas tank and pipeline of qualified sand loading sand tank starts air compressor machine, gauge pressure is made to be maintained at about 0.49MPa → open each valve and nozzle, rapidly blast is adjusted to 0.4Mpa → sandblasting, nozzle is 50-75 ° of angle with being grit blasted surface, and keeps the moving nozzle of 100 200mm spacing → uniformly → be grit blasted surface silver gray metallic luster occur；
(4) conical nozzle that is that the nozzle used by tube wall sandblasting be should be cast iron or that make with No. 45 steels, mouth end ovalize major axis 10mm, short axle 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762031.0A CN105751080A (en) | 2014-12-13 | 2014-12-13 | Sand blasting derusting process for pressure pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410762031.0A CN105751080A (en) | 2014-12-13 | 2014-12-13 | Sand blasting derusting process for pressure pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105751080A true CN105751080A (en) | 2016-07-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410762031.0A Pending CN105751080A (en) | 2014-12-13 | 2014-12-13 | Sand blasting derusting process for pressure pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105751080A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141928A (en) * | 2016-08-01 | 2016-11-23 | 合肥佳瑞林电子技术有限公司 | A kind of blasting craft of radar swivel bearing |
| CN107061929A (en) * | 2017-05-05 | 2017-08-18 | 山东电力基本建设总公司 | Steel circulating water pipe anti-corrosion method |
| CN113043171A (en) * | 2021-04-01 | 2021-06-29 | 中国船舶重工集团公司第七一六研究所 | Surface treatment operation platform based on sand sweeping and surface treatment method |
| CN114808065A (en) * | 2022-03-15 | 2022-07-29 | 兴化市兆泰金属材料有限公司 | A galvanizing process for improving the adhesion of steel |
-
2014
- 2014-12-13 CN CN201410762031.0A patent/CN105751080A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141928A (en) * | 2016-08-01 | 2016-11-23 | 合肥佳瑞林电子技术有限公司 | A kind of blasting craft of radar swivel bearing |
| CN107061929A (en) * | 2017-05-05 | 2017-08-18 | 山东电力基本建设总公司 | Steel circulating water pipe anti-corrosion method |
| CN113043171A (en) * | 2021-04-01 | 2021-06-29 | 中国船舶重工集团公司第七一六研究所 | Surface treatment operation platform based on sand sweeping and surface treatment method |
| CN114808065A (en) * | 2022-03-15 | 2022-07-29 | 兴化市兆泰金属材料有限公司 | A galvanizing process for improving the adhesion of steel |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |