CN1163801A - Technique for treating inner surface of high-pressure cylinder for natural gas automobile - Google Patents
Technique for treating inner surface of high-pressure cylinder for natural gas automobile Download PDFInfo
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- CN1163801A CN1163801A CN 96117538 CN96117538A CN1163801A CN 1163801 A CN1163801 A CN 1163801A CN 96117538 CN96117538 CN 96117538 CN 96117538 A CN96117538 A CN 96117538A CN 1163801 A CN1163801 A CN 1163801A
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- natural gas
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Abstract
A technology for processing the internal surface of high-pressure steel cylinder used for natural gas car includes derusting and coating steps. Said derusting step includes rolling derusting, cleaning and blow drying. Said coating step includes preparing of anticorrosion point from polyester or epoxy resin, solidifying agent and acid-resultant ceramic powder as filler by mixing them together, pouring the paint in the steel cylinder, rolling, coating and solidifying at ordinary temp or 80 deg.C. Processed steel cylinder possesses high anticorrosion power but does not influence its strength and service life.
Description
The invention provides a kind of metal surface treatment process, particularly a kind of technique for treating inner surface of high-pressure cylinder for natural gas automobile.
With the natural gas is the automobile of fuel, and the contamination index of the tail gas that discharges is all well below gasoline-fueled automobile, so natural gas has the title of green fuel.The used high-pressure cylinder of gas-fueled vehicles is steel at present, though employed natural gas is through purified treatment, but still contain a spot of hydrogen sulfide and steam, therefore can cause certain corrosion to steel cylinder, influence the intensity of steel cylinder, Chinese invention patent (CN1057215A number) discloses a kind of treatment process and device of pressure vessel for special gas, mainly be through baking burning-off oil with steel cylinder, sandblast, clean, after operation such as drying up and handling, primer and be coated with lining again, because its treatment process is the pressure vessel at the dress electron gas, and because electron gas is to the specific (special) requirements of pressure vessel, thereby make this complex process, the cost of the coating material that adopts is high and need special equipment just can carry out coating.
The object of the present invention is to provide the simple technique for treating inner surface of high-pressure cylinder for natural gas automobile of a kind of coating process.
Treatment process provided by the present invention is as follows:
The rust cleaning of rolling is packed piece material and No. 20 abrasive materials in the steel cylinder into, and steel cylinder is placed on the rolling rust remover, rolls 3～4 hours, then with gasoline or absolute ethyl alcohol cleaning inwall, at last with cold wind or hot blast drying.
The first step of coating operation is to prepare anticorrosive paint, and anticorrosive paint comprises mylar or epoxy resin, curing agent and as the acid resistant porcelain powder of filler, and described mylar can be No. 196, mylar, No. 191.Adopting mylar as steel cylinder inner surface anticorrosive paint main body, mainly is that its Corrosion Protection satisfies instructions for use fully because cost is low.Be the three-dimensional-structure of three-dimensional behind the curable polyester resin, be characterized in insoluble not molten, chemical property is stable, has Corrosion Protection and solvent resistance preferably.Epoxy resin is E
44Epoxy resin.Curing agent is that cyclohexanone peroxide is stuck with paste (containing 5% cycle-hexanone peroxide dibutyl ester sticks with paste) and naphthoic acid cobalt (styrene solution that contains 6% naphthoic acid cobalt) or ethylenediamine.The particle diameter of acid resistant porcelain powder is below the 10 μ m, adopts the acid resistant porcelain powder as filler can adjust anticorrosive paint viscosity, thus the control coating layer thickness.Its proportioning following (weight ratio):
Mylar or epoxy resin 100
Cyclohexanone peroxide is stuck with paste and (is contained 5% 1～4
The cycle-hexanone peroxide dibutyl ester is stuck with paste)
Naphthoic acid cobalt (contains 6% naphthoic acid cobalt
Styrene solution) 1～4
Ethylenediamine 6～8
Acid resistant porcelain powder 50～100
To pour in the steel cylinder by the anticorrosive paint that above-mentioned prescription mixes, rolling steel cylinder and coating is coated on the steel cylinder inner surface, the steel cylinder that rolls repeatedly reaches 0.1～0.4mm until coating layer thickness.
Last procedure is that the steel cylinder that will coat coating solidifies under room temperature or 80 ℃ of temperature.
Technology provided by the present invention can apply volume high-pressure cylinder not of uniform size, and it is little to be specially adapted to the big bottleneck of volume, and general coating apparatus can't impose the steel cylinder of coating to it.
The steel cylinder inner surface that treatment process provided by the present invention applies, through check, its results of property is as follows:
1. coating layer thickness is even, and thickness is 0.1～0.4mm, external used paint thickness usually, and adhesive force is also strong than paint films, and overall performance is much higher than paint films, and nontoxic.
2. employing concentration is 15% H
2SO
4Solution soak at room temperature 24 * 24 hours, no evidence of corrosion.See Table 1.
Table 1:
| Steel cylinder (only) | ????15 |
| Soak time (my god) | ????24 |
| Rate of corrosion | ????0 |
3. through 120,000 full and down fatigue tests, coating does not have breakage, and flawless has surpassed service life of steel cylinder.
The present invention be directed to and contain a small amount of etchant gas in the natural gas, steel cylinder is caused corrosion, and apply the technology of corrosion-inhibiting coating.The steel cylinder inner surface that adopts treatment process provided by the present invention to apply has following characteristics:
1. the steel cylinder (or container) that is suitable for various volumes and bore.
2. corrosion resistance of coating is good, does not influence steel cylinder intensity, and coating life is consistent with the steel cylinder operating period.
3. its coating does not need bottom, once can paint.
4. the coating material ambient temperature curable need not heated.
5. coating material is cheap, and technical process is simple, so cost is low, has good and economic.
Inner surface of high-pressure cylinder for natural gas automobile had both satisfied the anticorrosion requirement of steel cylinder after the coated with resins coating in a word, did not influence the intensity and the life-span of steel cylinder again.
Describe embodiments of the invention in detail below in conjunction with accompanying drawing.
The flow chart of Fig. 1 treatment process provided by the present invention.
Embodiment 1:
With reference to figure 1: the steel cylinder rust cleaning of rolling, piece material and No. 20 abrasive materials are packed in the steel cylinder, steel cylinder is placed on the rolling rust remover, rolled 3.5 hours,
Clean, clean inwall with gasoline or absolute ethyl alcohol,
Dry up, dry up with cold wind
Anticorrosive paint is prepared, and mixes anti-corrosion resin, curing agent and acid resistant porcelain powder by prescription,
Coating is poured the anticorrosive paint that mixes in steel cylinder rolling repeatedly,
Solidify, at room temperature solidify,
Check makes its thickness reach 0.2mm,
Warehouse-in
Anti-corrosion resin is No. 196, mylar, the proportioning of mylar, curing agent and acid resistant porcelain powder following (weight ratio):
No. 196 mylar 100
Cyclohexanone peroxide is stuck with paste and (is contained 5%
The cycle-hexanone peroxide dibutyl ester is stuck with paste) 2
Naphthoic acid cobalt (contains 6% naphthoic acid cobalt
Styrene solution) 2
The following acid resistant porcelain powder 50 of 10 μ mm
Embodiment 2:
Difference with reference to figure 1: embodiment 2 and embodiment 1 is that anti-corrosion resin is No. 191, mylar, the proportioning of mylar, curing agent and acid resistant porcelain powder following (weight ratio):
No. 191 mylar 100
Cyclohexanone peroxide is stuck with paste and (is contained 5%
The cycle-hexanone peroxide dibutyl ester is stuck with paste) 4
Naphthoic acid cobalt (contains 6% naphthoic acid cobalt
Styrene solution) 4
The following acid resistant porcelain powder 100 of 10 μ mm
Embodiment 3:
Difference with reference to figure 1: embodiment 3 and embodiment 1 is that anti-corrosion resin is epoxy resin E
44, the proportioning of epoxy resin, curing agent and acid resistant porcelain powder following (weight ratio):
E
44Epoxy resin 100
Ethylenediamine 8
The following acid resistant porcelain powder 75 of 10 μ mm
Claims (5)
1, a kind of technique for treating inner surface of high-pressure cylinder for natural gas automobile of being made up of rust cleaning, coating operation is characterized in that:
Described rust cleaning operation refers to:
1) rust cleaning of rolling is packed piece material and No. 20 abrasive materials in the steel cylinder into, and steel cylinder is placed on the rolling rust remover, rolled 3～4 hours,
2) adopt gasoline or absolute ethyl alcohol to clean
3) blow in
Described coating operation refers to:
1) anticorrosive paint is prepared, by formulated mylar or epoxy resin, curing agent and as the acid resistant porcelain powder of filler,
2) anticorrosive paint is poured into the coating of rolling in the steel cylinder,
3) under room temperature or 80 ℃ of temperature, solidify.
2, technique for treating inner surface of high-pressure cylinder for natural gas automobile according to claim 1 is characterized in that described curing agent comprises cyclohexanone peroxide paste (containing 5% cycle-hexanone peroxide dibutyl ester sticks with paste) and naphthoic acid cobalt (styrene solution that contains 6% naphthoic acid cobalt) or ethylenediamine.
3, technique for treating inner surface of high-pressure cylinder for natural gas automobile according to claim 1 is characterized in that the proportioning of described anticorrosive paint is following (weight ratio):
Mylar or epoxy resin 100
Cyclohexanone peroxide is stuck with paste and (is contained 5% 1～4
The cycle-hexanone peroxide dibutyl ester is stuck with paste)
Naphthoic acid cobalt (contains 6% naphthoic acid cobalt
Styrene solution) 1～4
Ethylenediamine 6～8
Acid resistant porcelain powder 50～100
4, technique for treating inner surface of high-pressure cylinder for natural gas automobile according to claim 1 is characterized in that described mylar is No. 196 or No. 191 mylar, and epoxy resin is E
44Epoxy resin.
5, technique for treating inner surface of high-pressure cylinder for natural gas automobile according to claim 1, the particle diameter that it is characterized in that described acid resistant porcelain powder are below the 10 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117538 CN1163801A (en) | 1996-04-29 | 1996-04-29 | Technique for treating inner surface of high-pressure cylinder for natural gas automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117538 CN1163801A (en) | 1996-04-29 | 1996-04-29 | Technique for treating inner surface of high-pressure cylinder for natural gas automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1163801A true CN1163801A (en) | 1997-11-05 |
Family
ID=5124381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96117538 Pending CN1163801A (en) | 1996-04-29 | 1996-04-29 | Technique for treating inner surface of high-pressure cylinder for natural gas automobile |
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| CN (1) | CN1163801A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100594319C (en) * | 2008-04-29 | 2010-03-17 | 郑卫星 | Industry liquid gas storage tank cavity fuel injection nitrogen charging rust protection method and apparatus |
| CN103357565A (en) * | 2012-03-28 | 2013-10-23 | 深圳市罗杰科技有限公司 | Internal spraying process for steel cylinder with two necked ends |
| CN107053712A (en) * | 2017-04-28 | 2017-08-18 | 遵义市兴英鹏塑料包装有限公司 | The manufacture craft of corrosion-resistant medicine bottle |
-
1996
- 1996-04-29 CN CN 96117538 patent/CN1163801A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100594319C (en) * | 2008-04-29 | 2010-03-17 | 郑卫星 | Industry liquid gas storage tank cavity fuel injection nitrogen charging rust protection method and apparatus |
| CN103357565A (en) * | 2012-03-28 | 2013-10-23 | 深圳市罗杰科技有限公司 | Internal spraying process for steel cylinder with two necked ends |
| CN103357565B (en) * | 2012-03-28 | 2015-12-16 | 深圳市罗杰科技有限公司 | A kind of interior spraying coating process of two ends reducing steel cylinder |
| CN107053712A (en) * | 2017-04-28 | 2017-08-18 | 遵义市兴英鹏塑料包装有限公司 | The manufacture craft of corrosion-resistant medicine bottle |
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| WD01 | Invention patent application deemed withdrawn after publication |