CN101922004A - Method for treating inner wall of high-pressure seamless steel gas cylinder - Google Patents
Method for treating inner wall of high-pressure seamless steel gas cylinder Download PDFInfo
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- CN101922004A CN101922004A CN 201010257615 CN201010257615A CN101922004A CN 101922004 A CN101922004 A CN 101922004A CN 201010257615 CN201010257615 CN 201010257615 CN 201010257615 A CN201010257615 A CN 201010257615A CN 101922004 A CN101922004 A CN 101922004A
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Abstract
The invention discloses a method for treating the inner wall of a high-pressure seamless steel gas cylinder, which comprises the following steps of: grinding the inner wall of the gas cylinder; washing the inner wall of the gas cylinder; phosphating the inner wall of the gas cylinder: charging four-in-one phosphating liquid in the gas cylinder, plugging the mouth of the gas cylinder, putting the gas cylinder on a gas cylinder roller flatly, rotating and rolling for 5-15 min, and washing and removing ash; grinding the inner wall of the gas cylinder with a tungsten-molybdenum alloy steel ball; washing with deionized water till the conductivity is not more than 0.5 uS/cm; and drying in vacuum. The method has the advantages of simple treatment technology and low treatment cost, and the gas cylinder treated by the method can effectively prevent particles and metal impurities from being brought by gas, thereby achieving the stability of packaged gas and protecting the inner surface of the gas cylinder.
Description
Technical field
The present invention relates to a kind of method for processing internal wall that is used for the steel tank of high-purity, micro-activity mixed gas.
Technical background
The packing of gas products adopts pipe-line transportation, the on-the-spot system gas except cryogenic liquid gas adopts low temperature storage tank, bulk gas supply, generally all adopts the gas cylinder packing.Be used for high-purity gas; such as high-purity argon, high purity nitrogen, high purity oxygen, High Purity Hydrogen, high-pure helium etc.; and be used for the internal surface that above-mentioned gas contains standard gas (microstandard gas, micro-activity mixed gas) the packaging gas cylinder of compositions such as micro CO, methane, nitrogen protoxide, nitrogen peroxide and need handle; avoid introducing particle and metallic impurity; reach the stability of packaged gas, protect the gas cylinder internal surface simultaneously.
The Chinese invention patent treatment process of corrosive gases packaging vessel " high-purity and " (ZL03133449.0) discloses a kind of treatment process of high-purity and corrosive gases packaging vessel; adopt technologies such as phosphatization, spraying, quenching that the gas cylinder internal surface is coated with fluorine resin material; in the hope of reaching the purpose of protection internal surface; technological operation is loaded down with trivial details; require treatment condition all just can finish in high temperature, long-time, multiple tracks technology; utilize the inertia of fluorine material to avoid packing gas and contact, reach the stability of packaged gas with the bottle internal surface.What Chinese invention patent " a kind of method for processing internal wall of ultrapure silane gas cylinder " was introduced in (ZL200810024680.5) is the method for processing internal wall that is used for the silane gas cylinder, focus on internal surface smooth finish, adopt measures such as polishing, washed with de-ionized water, metal cladding, avoid introducing particle and metallic impurity, only be suitable for the packing of unreactiveness, reducing gas.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective that prior art exists, and a kind of high-purity gas and the microstandard gas method for processing internal wall with high-pressure seamless steel gas cylinder is provided.Adopt four unification phosphatization liquid, simplify the treatment process of internal surface, can effectively achieve the above object again simultaneously.
The inventive method, step is as follows:
1, gas cylinder inwall polishing: processed high-pressure seamless steel gas cylinder (abbreviation gas cylinder) is removed cylinder valve, be positioned on the gas cylinder roller press of rotation, add the water polishing with quartz sand, until gas cylinder inner wall smooth, rustless scar;
2, the gas cylinder inwall cleans: water cleans the gas cylinder internal surface;
Above-mentioned steps, the same Chinese invention patent for the treatment of processes " a kind of method for processing internal wall of ultrapure silane gas cylinder " is (ZL200810024680.5); Difference is that deionized water is changed into common water to some extent.
3, gas cylinder inwall phosphatization: with pack into the amount 1/2 or more of gas cylinder volume of four unification phosphatization liquid (being purchased product), block bottleneck, gas cylinder is lain against on the gas cylinder roller press rotation rolling 5～15min (apparent surface situation and room temperature can suitably be adjusted the time);
4, cleaning and ash disposal: clean gas cylinder inwall 5～10min with 50～70 ℃ of hot water; Set by step 1, quartz sand is changed into the miramint steel ball (miramint steel ball optimum amount be about gas cylinder volume 1/3) of diameter 6～8mm, gas cylinder inwall 5～10min once more polishes; With washed with de-ionized water to specific conductivity≤0.5uS/cm;
5, vacuum drying: will clean qualified gas cylinder and load onto cylinder valve, and put into vacuum drying oven, under 105～110 ℃ condition, to gas cylinder vacuum-drying 2hr.
At last cylinder treated is carried out tightness test: the gas cylinder behind the vacuum drying charges into high pure nitrogen to 15MPa, leak test; After leak test is qualified, carry out the stability inspection: bleed off nitrogen, be evacuated to≤1Pa, fully displacement back can gas to be installed was placed more than 1 day, analyzed the preceding index of every foreign matter content and can and compared, and should not have considerable change; Analyze once more after 60 days,, then dispose as every impurity index no change.Otherwise, handle again according to above-mentioned steps.
Described four unification phosphatization liquid are the existing product (described four unifications are meant: oil removing, rust cleaning, phosphatization, passivation four unifications) that is purchased, and wherein typical case's four unification phosphatization liquid technical recipes are as follows:
Prescription 1
Component concentration
Phosphatase 11 50ml/L
Zinc oxide 30g/L
Zinc nitrate 120g/L
Magnesium chloride 10g/L
Tartrate 5.5g/L
Sodium dodecylbenzene sulfonate 3g/L
Potassium bichromate 0.25g/L
Ammonium molybdate 0.8g/L
Its preparation method is: zinc oxide with suitable quantity of water furnishing pasty state, under continuous agitation condition, is slowly added phosphoric acid.After treating that phosphoric acid fully dissolves zinc oxide, order adds zinc nitrate, tartrate and magnesium chloride, is diluted with water to 2/3 of cumulative volume again, stirs dissolving.Potassium bichromate and ammonium molybdate are dissolved respectively, add in the above-mentioned soup, stir, mix, the adding Sodium dodecylbenzene sulfonate that continues also adds water to capacity, fully stirs, and mixes to get final product.
Prescription 2
Component concentration
Zinc nitrate 26g/L,
Zinc oxide 14g/L,
Potcrate 4g/L,
Sodium Fluoride 8g/L,
Phosphoric acid 310mL/L,
Nickelous nitrate 6g/L,
Cupric nitrate 0.03g/L,
Ethanol 7.5g/L,
Sodium dodecylbenzene sulfonate 5g/L,
The inventive method, treatment process is simple, and processing cost is low, and cylinder treated can effectively avoid gas to introduce particle and metallic impurity, reaches the stability of packaged gas, protects the gas cylinder internal surface simultaneously.
Description of drawings
Fig. 1 is the method for processing internal wall process flow diagram of high-pressure seamless steel gas cylinder of the present invention.
Embodiment
Below in conjunction with embodiment, the inventive method is elaborated.
Embodiment
1, processed high-pressure seamless steel gas cylinder is removed cylinder valve, be positioned on the gas cylinder roller press of rotation, add the water polishing with quartz sand, until gas cylinder inner wall smooth, rustless scar.With splanchnoscopy gas cylinder inwall, the rust scar and the rough surface of not polishing clean can not be arranged, if any then polishing again.After polishing finishes, pour out quartz sand and water.
2, water cleans the gas cylinder internal surface; Be inverted gas cylinder then, pour out a bottle interior residual water.
3, four unification phosphatization liquid are packed into the amount 1/2 or more of gas cylinder volume is blocked bottleneck, gas cylinder is lain against on the gas cylinder roller press rotation rolling 5～15min.The gas cylinder internal surface is carried out oil removing, rust cleaning, phosphatization and passivation.Be inverted gas cylinder, pour out four unification phosphatization liquid in the bottle.
4, clean gas cylinder inwall 5～10min with 50～70 ℃ of hot water; Set by step 1, quartz sand is changed into the miramint steel ball of diameter 6～8mm, miramint steel ball consumption is about 1/3 of gas cylinder volume, and gas cylinder inwall 5～10min once more polishes; With washed with de-ionized water to specific conductivity≤0.5uS/cm.
5, will clean qualified gas cylinder and load onto cylinder valve, put into 105～110 ℃ vacuum drying oven, gas cylinder vacuum-drying 2 hours.
At last cylinder treated is carried out tightness test: the gas cylinder behind the vacuum drying charges into high pure nitrogen to 15MPa, leak test; After leak test is qualified, carry out the stability inspection: bleed off nitrogen, be evacuated to≤1Pa, fully displacement back can gas to be installed was placed more than 1 day, analyzed the preceding index of every foreign matter content and can and compared, and should not have considerable change; Analyze once more after 60 days,, then dispose as every impurity index no change.Otherwise, handle again according to above-mentioned steps.
Claims (1)
1. the method for processing internal wall of a high-pressure seamless steel gas cylinder, its step is as follows:
A, the polishing of gas cylinder inwall: processed high-pressure seamless steel gas cylinder is removed cylinder valve, be positioned on the gas cylinder roller press of rotation, add the water polishing with quartz sand, until gas cylinder inner wall smooth, rustless scar;
B, gas cylinder inwall clean: water cleans the gas cylinder internal surface;
C, gas cylinder inwall phosphatization: with the four unification phosphatization liquid gas cylinder of packing into, block bottleneck, gas cylinder is lain against on the gas cylinder roller press, the rotation 5～15min that rolls;
D, cleaning and ash disposal: clean gas cylinder inwall 5～10min with 50～70 ℃ of hot water; A set by step changes quartz sand into the miramint steel ball of diameter 6～8mm, polishing gas cylinder inwall 5～10min; With washed with de-ionized water to specific conductivity≤0.5uS/cm;
E, vacuum drying: will clean qualified gas cylinder and load onto cylinder valve, and put into vacuum drying oven, under 105～110 ℃ condition, to gas cylinder vacuum-drying 2hr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201010257615 CN101922004A (en) | 2010-08-20 | 2010-08-20 | Method for treating inner wall of high-pressure seamless steel gas cylinder |
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| CN 201010257615 CN101922004A (en) | 2010-08-20 | 2010-08-20 | Method for treating inner wall of high-pressure seamless steel gas cylinder |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458145A (en) * | 2014-12-22 | 2015-03-25 | 洛阳双瑞特种装备有限公司 | Inner surface cleaning and quality detection method for gas bottle filled with high-purity gas |
| CN105927851A (en) * | 2016-05-18 | 2016-09-07 | 上海正帆科技股份有限公司 | Method for processing steel bottles of high-purity arsine |
| CN106180097A (en) * | 2016-07-22 | 2016-12-07 | 洛阳双瑞特种装备有限公司 | A kind of oil removing clean method filling gases at high pressure gas cylinder inner surface |
| CN107460489A (en) * | 2017-07-04 | 2017-12-12 | 河池桂嘉知识产权服务有限公司 | The method for removing steel surface rusty stain |
| CN111618666A (en) * | 2020-06-16 | 2020-09-04 | 岳阳凯美特电子特种稀有气体有限公司 | Treatment method for inner wall of steel cylinder filled with high-purity halogen mixed gas |
Citations (2)
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|---|---|---|---|---|
| CN2267382Y (en) * | 1996-05-16 | 1997-11-12 | 常州飞机制造厂 | Welded steel cylinder for refrigerant |
| CN101250704A (en) * | 2008-04-01 | 2008-08-27 | 南京特种气体厂有限公司 | Method for processing internal wall of hyperpure silicon alkyl gas cylinder |
-
2010
- 2010-08-20 CN CN 201010257615 patent/CN101922004A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2267382Y (en) * | 1996-05-16 | 1997-11-12 | 常州飞机制造厂 | Welded steel cylinder for refrigerant |
| CN101250704A (en) * | 2008-04-01 | 2008-08-27 | 南京特种气体厂有限公司 | Method for processing internal wall of hyperpure silicon alkyl gas cylinder |
Non-Patent Citations (1)
| Title |
|---|
| 《新技术新工艺》 20091231 刘勇等 钢铁表面处理"四合一"磷化液的研究 94-98页 1 , 第4期 2 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458145A (en) * | 2014-12-22 | 2015-03-25 | 洛阳双瑞特种装备有限公司 | Inner surface cleaning and quality detection method for gas bottle filled with high-purity gas |
| CN105927851A (en) * | 2016-05-18 | 2016-09-07 | 上海正帆科技股份有限公司 | Method for processing steel bottles of high-purity arsine |
| CN105927851B (en) * | 2016-05-18 | 2018-02-23 | 上海正帆科技股份有限公司 | A kind of steel cylinder method for handling high-purity arsine |
| CN106180097A (en) * | 2016-07-22 | 2016-12-07 | 洛阳双瑞特种装备有限公司 | A kind of oil removing clean method filling gases at high pressure gas cylinder inner surface |
| CN106180097B (en) * | 2016-07-22 | 2018-06-01 | 洛阳双瑞特种装备有限公司 | A kind of oil removing clean method for filling gases at high pressure gas cylinder inner surface |
| CN107460489A (en) * | 2017-07-04 | 2017-12-12 | 河池桂嘉知识产权服务有限公司 | The method for removing steel surface rusty stain |
| CN111618666A (en) * | 2020-06-16 | 2020-09-04 | 岳阳凯美特电子特种稀有气体有限公司 | Treatment method for inner wall of steel cylinder filled with high-purity halogen mixed gas |
| CN111618666B (en) * | 2020-06-16 | 2023-02-28 | 岳阳凯美特电子特种稀有气体有限公司 | Treatment method for inner wall of steel cylinder filled with high-purity halogen mixed gas |
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Open date: 20101222 |