CN1241795C - Hollow antisepsis container and its mfg. method - Google Patents
Hollow antisepsis container and its mfg. method Download PDFInfo
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- CN1241795C CN1241795C CN 03103235 CN03103235A CN1241795C CN 1241795 C CN1241795 C CN 1241795C CN 03103235 CN03103235 CN 03103235 CN 03103235 A CN03103235 A CN 03103235A CN 1241795 C CN1241795 C CN 1241795C
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Abstract
The present invention relates to a mid-hollow anti-corrosion container which comprises an external bearing metal layer and an internal anti-corrosion layer, wherein the internal anti-corrosion layer is made of cross-linked polyethylene. The internal anti-corrosion layer of the present invention and the metal surface contact very firmly, the generated internal anti-corrosion layer can not fall off from the metal surface, the anti-corrosion capability is stable, the thickness can reach 15mm in the actual manufacture, a welding seam can be completely and easily covered, and the requirement of the dimensional accuracy during the welding process can be reduced. Thereby, the present invention can play the anti-corrosion function as well as can reduce the welding difficulty so that the fraction defective rate is reduced, and also has a certain thermal insulation effect; the service life can be more than 20 years, the present invention can be widely used for a liner of an electric water heater, a liner of a water drinking machine, a water tank, an oil tank and a liquid gas storage tank, and also provides a manufacture method for the mid-hollow anti-corrosion container.
Description
Technical field
The present invention relates to a kind of hollow container and manufacture method thereof.
Background technology
For a long time, the hollow container of storaging liquid, gas, such as inner container of electric water heater, inner tube of water bowl, water tank, fuel tank, blue gas holding vessel, all exist inside face corrosion-proof problem, such as inner container of electric water heater, it is when welding, and the normal structure around the weld seam is often destroyed, causes easily by chloride ion corrosion in the water.Present inner bag also has within it the surface that enamel layer is set, but the thickness of enamel layer can not be done too thickly, is generally the 0.15-0.5 millimeter, when reality is made, all is difficult to guarantee the homogeneity and the integraty of coating, thereby very difficult weld seam is hidden fully.Bibliographical information is also arranged, at the inner bag inside face preservative coat is set, its preservative coat adopts a kind of in modified poly ethylene, polyformaldehyde, polycarbonate, polyphenylene sulfide, epoxy, the fluoroplastic.But these materials all can not form at the inner bag inside face and combine firm preservative coat with metal level, very easily come off from the metal surface, therefore, do not see also that on market this end product that forms based on this anticorrosion container is on sale.
Summary of the invention
Technical matters to be solved by this invention provides the strong and stable hollow anticorrosion container of a kind of antiseptic power.For this reason, the present invention by the following technical solutions: it comprises outer pressure-bearing metal layer and interior preservative coat, and interior preservative coat is a crosslinked polyethylene.Crosslinked polyethylene has extremely strong antifatigue, heat-resisting, anti-creep, the stress crack resistant ability, its oxidation causes because of ultraviolet ray, thereby the crosslinked polyethylene that is in the inner bag is difficult for oxidation, simultaneously, crosslinked polyethylene combines very firm with the metal surface, preservative coat can not come off from the metal surface in formed, antiseptic power is stable, and can reach 15 millimeters in the actual manufacturing of its thickness, can easily fully hide weld seam, dimension precision requirement in the time of reducing welding, therefore both played antisepsis, can reduce the welding difficulty again and reduce fraction defect, also have certain heat insulation effect, reach its service life more than 20 years, the present invention has the bearing capacity that conforms with the regulations and high antiseptic power, and interior preservative coat is nontoxic can antirust heat-resisting long service life, can be widely used in inner container of electric water heater, inner tube of water bowl, water tank, fuel tank, the blue gas holding vessel.The thickness of interior preservative coat is good with the 1-15 millimeter, like this, can not only realize above-mentioned effect, makes also comparatively convenient economical.
The inner wall surface of described outer pressure-bearing metal layer is a rough surface.Rough surface can be annular knurl face or sandblast face, and perhaps the metal gauze that laid by the inner wall surface of outer pressure-bearing metal layer of rough surface constitutes, and metal gauze can be welded on the inner wall surface of metal level.Like this, the binding force of preservative coat and metal surface in greatly strengthening, make its in conjunction with very firmly, be more suitable for application.
Crosslinked polyethylene also is added with at least a in plastics antioxidant, the stabilizer for plastics, the composition that is added, and its total weight is greater than zero 25% (percentage by weight) smaller or equal to crosslinked polyethylene weight.Like this, the composition of preservative coat in further optimizing, further the chemical property of stable interior preservative coat makes its longer service life.Certainly, also can add other composition useful, as plastics adhesion agent, crosslinking agent to preservative coat.All additive-treated oil total weightes are no more than 25% of crosslinked polyethylene weight.
Another technical matters to be solved by this invention provides a kind of manufacture method of above-mentioned hollow anticorrosion container, and described container comprises outer pressure-bearing metal layer and interior preservative coat, and interior preservative coat is made by crosslinked polyethylene, and it may further comprise the steps:
1), sheet metal is prepared into hollow container, and inner surface of container is carried out surface treatment,
2), in container, drop into to constitute in the crosslinked polyethylene of preservative coat, the dog-house of usefulness anchor clamps closed container, and on anchor clamps, stay a deflation hole, other closure of openings on the container,
3), with anchor clamps container is clamped in baking oven, rotary container under the oven temperatures of 260 to 420 degree makes the material powder fusing and evenly applies on container inner wall, continues the rotation cooling curing then and forms coating.
Adopt above method to make to have suitable voltage endurance capability, can heat-resisting resistant to corrosion hollow container, in it reasonable, coating of preservative coat thickness evenly, with metal surface adhesive ability height, not yielding.
Describedly inner surface of container is carried out surface treatment comprise sheet material inside face degreasing and rust removal and phosphatization operation, before or after above-mentioned surface treatment procedure, also comprise metallic interior surface roughening treatment process, this roughening treatment process can be to lay metal gauze in metallic interior surface annular knurl or sandblast or in metallic interior surface, and metal gauze can be welded on the inner wall surface of metal level.Like this, can greatly strengthen the binding force of interior preservative coat and metal surface.
After container inner wall forms coating, also can add heating and go the step of distinguishing the flavor of, promptly in container, charge into the above hot water of 80 degree, circulate 30 minutes-2 hours.Can not only improve the class of product like this, can also play the effect of stable interior preservative coat simultaneously, make its chemical property more stable.
Grain fineness is good with the 40-60 order, like this, can help the formation of anticorrosion coating and evenly, and also comparatively economical.
Described oven temperature is good with 300 degree to 380 degree, and is best to 360 degree with 320 degree.Like this, can guarantee the even of coating, can reduce production time again, enhance productivity.
Description of drawings
Fig. 1 is a scheme drawing of the present invention.
Fig. 2 is the enlarged drawing at Figure 1A place.
The specific embodiment
Embodiment 1
With reference to accompanying drawing 1.Hollow anticorrosion container provided by the invention comprises outer pressure-bearing metal layer 1 and interior preservative coat 2, and interior preservative coat is a crosslinked polyethylene.The thickness of interior preservative coat is good with the 1-15 millimeter.
Present embodiment is example with the inner container of electric water heater, outer pressure-bearing metal layer is welded by stage casing 4, front end cover 5 and rear side housing 6 butt joints, outer pressure-bearing metal layer has several openings 7, one of them is as the dog-house of interior preservative coat raw material, and other is as the waterpipe jointing of electric heater or the insertion mouth of electric heating element.
With reference to Fig. 2.The inner wall surface 3 of described outer pressure-bearing metal layer is a rough surface.Rough surface can be by annular knurl face or sandblast face.Perhaps the metal gauze that laid by the inner wall surface of outer pressure-bearing metal layer of rough surface constitutes, and metal gauze can be welded on the inner wall surface of metal level.
Crosslinked polyethylene also can add at least a in plastics antioxidant, the stabilizer for plastics, the composition that is added, and its total weight is greater than zero 25% (percentage by weight) smaller or equal to crosslinked polyethylene weight.
Plastics antioxidant can adopt commercially available antioxidant 330, antioxidant 300 etc.
Stabilizer for plastics can adopt commercially available light stabilizer 2002, light stabilizer 1084 etc.
Embodiment 2
Present embodiment is the manufacture method of the hollow anticorrosion container of embodiment 1.It may further comprise the steps successively:
1), adopt the butt joint welding that sheet metal is prepared into hollow container, container has several openings 7; Inner surface of container is carried out surface treatment, promptly carry out oil removing, rust cleaning, phosphatization, surface sand-blasting operation successively, the concrete grammar of these operations is common commonsense method commonly used;
2), in container, drop into the crosslinked polyethylene particle, with the dog-house on the anchor clamps closed container and stay a deflation hole on anchor clamps, other opening is sealed, grain fineness is 50 orders.
3), in baking oven, container is clamped with anchor clamps, be controlled at rotary container under the condition of 330-350 degree at oven temperature, this rotates to be 360 degree omnirange rotations, makes the material powder fusing and evenly coating on container inner wall, continues the rotation cooling curing then and forms coating.
After container inner wall forms coating, cut off unnecessary woolen cloth and overlap, in container, charge into the above hot water of 90 degree then, circulated 1 hour.
Make the hollow anticorrosion container.
Embodiment 3
The raw material of preservative coat is the antioxidant 330 of crosslinked polyethylene particle and crosslinked polyethylene weight 0.5%, the light stabilizer 2002 of crosslinked polyethylene weight 0.1% in the formation that drops in container; Inner surface of container is carried out surface treatment, promptly carry out surface weldering metal gauze, oil removing, rust cleaning, phosphatization, operation successively, oven temperature is controlled at the 340-360 degree.Other is with embodiment 2.
Claims (5)
1, a kind of manufacture method of hollow anticorrosion container is characterized in that described container comprises outer pressure-bearing metal layer and interior preservative coat, and interior preservative coat is made by crosslinked polyethylene, and it may further comprise the steps:
1), sheet metal is prepared into hollow container, and inner surface of container is carried out surface treatment,
2), in container, drop into to constitute in the crosslinked polyethylene of preservative coat, the dog-house of usefulness anchor clamps closed container, and on anchor clamps, stay a deflation hole, other closure of openings on the container,
3), with anchor clamps container is clamped in baking oven, rotary container under the oven temperatures of 260 to 420 degree makes the material powder fusing and evenly applies on container inner wall, continues the rotation cooling curing then and forms coating.
2, the manufacture method of a kind of hollow anticorrosion container as claimed in claim 1, it is characterized in that describedly inner surface of container is carried out surface treatment comprising, before or after above-mentioned surface treatment procedure, also comprise to inner surface of container annular knurl or sandblast or at inner surface of container and lay the metal gauze operation inner surface of container degreasing and rust removal and phosphatization operation.
3, the manufacture method of a kind of hollow anticorrosion container as claimed in claim 1 is characterized in that also having heating and goes the step of distinguishing the flavor of after container inner wall forms coating, promptly charge into the above hot water of 80 degree in container, circulates 30 minutes-2 hours.
4, the manufacture method of a kind of hollow anticorrosion container as claimed in claim 1 is characterized in that the feed particles fineness is the 40-60 order.
5, the manufacture method of a kind of hollow anticorrosion container as claimed in claim 1 is characterized in that described temperature is that 320 degree are to 360 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103235 CN1241795C (en) | 2003-01-27 | 2003-01-27 | Hollow antisepsis container and its mfg. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103235 CN1241795C (en) | 2003-01-27 | 2003-01-27 | Hollow antisepsis container and its mfg. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1431129A CN1431129A (en) | 2003-07-23 |
| CN1241795C true CN1241795C (en) | 2006-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03103235 Expired - Fee Related CN1241795C (en) | 2003-01-27 | 2003-01-27 | Hollow antisepsis container and its mfg. method |
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| Country | Link |
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| CN (1) | CN1241795C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101805424B (en) * | 2010-03-12 | 2012-01-04 | 金发科技股份有限公司 | Silane crosslinked polyethylene special-purpose material for internal bladder of electric water heater |
| CN102485342A (en) * | 2010-12-06 | 2012-06-06 | 青岛三利中德美水设备有限公司 | Corrosion prevention process of sealed container |
| CN105312215A (en) * | 2014-05-28 | 2016-02-10 | 浙江桑乐数字化太阳能有限公司 | Water heater water tank inner container fluororesin coating corrosion preventing method |
| WO2017170787A1 (en) * | 2016-03-30 | 2017-10-05 | 日本発條株式会社 | Hollow spring member and manufacturing method therefor |
| CN111602010B (en) | 2017-12-06 | 2021-12-07 | A.O.史密斯公司 | Water heater with organic polymer coating |
| BR112021007201A2 (en) * | 2018-10-16 | 2021-08-10 | Arkema Inc. | containers for transporting and storing liquid compositions |
| CN112048115B (en) * | 2019-06-06 | 2023-09-26 | 神华(北京)新材料科技有限公司 | Composite material of metal and polyolefin, preparation method and container thereof |
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2003
- 2003-01-27 CN CN 03103235 patent/CN1241795C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1431129A (en) | 2003-07-23 |
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