CN114311739A - Manufacturing method of strong corrosion-resistant lead-acid storage battery cover - Google Patents
Manufacturing method of strong corrosion-resistant lead-acid storage battery cover Download PDFInfo
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- CN114311739A CN114311739A CN202111478122.8A CN202111478122A CN114311739A CN 114311739 A CN114311739 A CN 114311739A CN 202111478122 A CN202111478122 A CN 202111478122A CN 114311739 A CN114311739 A CN 114311739A
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Abstract
The invention discloses a manufacturing method of a strong corrosion-resistant lead-acid storage battery cover, which comprises the following steps of preparing a mould, preparing an insert, preparing a sheet, paving the sheet, carrying out mould pressing, lifting a mould to take a part, repairing a flash and post-curing, and preparing the storage battery cover with a porous structure by mould pressing and integral forming, wherein the storage battery cover is provided with 6-12 pole column holes uniformly distributed into two rows, 2-4 water cooling pipe holes and 1 or more threaded holes, and at least one threaded hole is arranged in the middle of the storage battery cover; the method uses the SMC sheet of a vinyl resin/glass fiber system as a raw material, adopts an SMC compression molding process to manufacture the lead-acid storage battery cover, is simple to operate, and has the advantages that the prepared product has good appearance, uniform color and no defects such as pore cracks, and meanwhile, the lead-acid storage battery cover has strong acid liquid corrosion resistance, and sulfuric acid solution (1.32 g/cm) at 50 ℃ is adopted3) Steam generating deviceThe service life in the environment is as long as more than 5 years.
Description
Technical Field
The invention belongs to the technical field of resin-based composite materials, and particularly relates to a manufacturing method of a strong corrosion-resistant lead-acid storage battery cover.
Background
The traditional lead-acid storage battery cover is mostly formed by plastic injection molding, or the new energy battery cover is in a flat plate structure like a compression molding mode, and with the development of manufacturing materials, in order to improve the strength and the corrosion resistance of the lead-acid storage battery cover and prolong the service life, the SMC compression molding composite material is gradually applied to the design of the storage battery cover.
At present, the composite material formed by compression molding of SMC molding compound of a vinyl resin/glass fiber system has high specific strength, good corrosion resistance, fire resistance and flame retardance, and can just meet the requirements of a lead-acid storage battery shell on the material.
Because the punching of the fiber reinforced composite material structural member easily causes structural and mechanical damages, the mechanical processing damages the surface resin layer of the composite material product, and the weather resistance of the product is reduced.
Disclosure of Invention
The present invention addresses the above needs in the art by providing a method for manufacturing a lead-acid battery cover with high corrosion resistance.
The technical scheme adopted by the invention for solving the technical problems is as follows: a manufacturing method of a strong corrosion-resistant lead-acid storage battery cover comprises the following steps of preparing a mold, preparing an insert, preparing a sheet, laying the sheet, molding, lifting the mold to take a part, repairing fins and post-curing, preparing the storage battery cover with a porous structure by molding and integrally forming, wherein 6-12 pole holes uniformly distributed into two rows, 2-4 water-cooling pipe holes and 1 or more threaded holes are formed in the storage battery cover, the pole holes are uniformly distributed into 2 rows on the storage battery cover, at least one threaded hole comprises a plurality of observation holes, and one of the observation holes is distributed in the middle of the storage battery cover, and the method comprises the following steps:
step 3, after the release agent is naturally dried, cutting the SMC sheet of the vinyl resin/glass fiber system according to a preset shape, and placing the SMC sheet in a classified mode in sequence; the SMC sheet of the vinyl resin/glass fiber system consists of vinyl resin, special glass fiber yarn, silicon dioxide, a filler and various auxiliaries;
step 4, stacking the sheets on a female die;
step 5, closing the die by a hydraulic machine, and ensuring that the external dimension proportion of the closed female die, male die and thread insert product to the die cavity is 99.95: 100, respectively; molding at 30-35 MPa for 10-20 min;
step 6, lifting the mold to take out the part, and taking down the threaded insert on the product;
and 7, repairing the flash of the product blank, and post-curing the product at 80 ℃ for 6 h.
According to the manufacturing method of the lead-acid storage battery cover with strong corrosion resistance, the aperture of a pole hole is phi 50-70, the aperture of a water-cooling pipe hole is phi 15-25, and the aperture of a threaded hole is phi 25-60.
The manufacturing method of the lead-acid storage battery cover with strong corrosion resistance has the mold release number of DAIFREE GW-250.
The invention has the beneficial effects that:
the manufacturing method of the invention uses SMC sheet of vinyl resin/glass fiber system as raw material, adopts SMC compression molding process to manufacture the composite material lead-acid storage battery cover, has simple operation, and the prepared product has good appearance, uniform color and no defects of air holes, cracks and the like; because preset through-hole, half-hole boss and screw thread inserts in the mould and adopt mould pressing integrated into one piece, can avoid the later stage to carry out machining on the battery cover product completely, integrated into one piece's screw hole closely with the nut cooperation, sealing performance is excellent, and the surface resin layer is very big simultaneously has improved the acid liquid corrosion resistance ability of combined material battery cover product.
The accumulator cover manufactured by the method has good appearance, uniform color, no defects of air holes, cracks and the like, has strong acid liquid corrosion resistance, and can be treated by sulfuric acid solution (1.32 g/cm) at 50 DEG C3) The service life of the storage battery in a steam environment is as long as more than 5 years, and the storage battery does not need to be replaced in the life cycle.
Drawings
FIG. 1 is a diagram of a threaded insert and die arrangement for the method of the present invention.
The reference signs are: 1-threaded insert, 2-female die.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The lead-acid storage battery cover with strong corrosion resistance, which is prepared by the invention, has a certain type with the length of 500mm, the width of 300mm and the thickness of 30mm, 6 pole holes are arranged on the storage battery cover, and the aperture is phi 70; 4 water-cooling pipe holes with the aperture phi of 25; 4 threaded holes with the aperture phi of 40. The manufacturing method comprises the steps of preparing a mould, preparing an insert, preparing a sheet, paving the sheet, carrying out mould pressing, lifting the mould to take out a piece, repairing a flash and carrying out post-curing.
The product uses SMC sheet of vinyl resin/glass fiber system as raw material, adopts SMC compression molding process to manufacture lead-acid storage battery cover. The accumulator cover has good appearance, uniform color, no defects of air hole crack and the like, strong acid liquid corrosion resistance and sulfur resistance at 50 DEG CAcid solution (1.32 g/cm)3) The service life in the steam environment is as long as more than 5 years.
The manufacturing method of the storage battery cover comprises the following steps:
3, cutting the SMC sheets of the vinyl resin/glass fiber system according to a preset shape, and placing the SMC sheets in a classified manner in sequence;
step 4, stacking the sheets on the female die 2;
step 5, closing the die by a hydraulic machine, molding at 35MPa, and maintaining the pressure for 20 min;
step 6, lifting the mold to take out the part, and taking down the threaded insert 1 on the product;
and 7, repairing the flash of the product blank, and post-curing the product at 80 ℃ for 6 h.
The size ratio of the cavity formed by combining the female die 2, the male die and the threaded insert 1 of the storage battery cover to the product is 100: 99.95. the threaded insert 1 can be directly placed at a fixed position of the female die 2, and after a product is cured and formed, the product is demoulded along with the product and then is screwed out of the product.
Example 2
The lead-acid storage battery cover with strong corrosion resistance, which is prepared by the invention, has a certain type of lead-acid storage battery cover with the length of 600mm, the width of 300mm and the thickness of 30mm, and is provided with 12 pole holes with the aperture of phi 50; 4 water-cooling pipe holes with the aperture phi of 15; 3 threaded holes with different sizes are provided, and the hole diameters are phi 60, phi 30 and phi 25. The manufacturing method comprises the steps of preparing a mould, preparing an insert, preparing a sheet, paving the sheet, carrying out mould pressing, lifting the mould to take out a piece, repairing a flash and carrying out post-curing.
The product uses SMC sheet of vinyl resin/glass fiber system as raw material, adopts SMC compression molding process to manufacture lead-acid storage battery cover. The accumulator cover has good appearance, uniform color and no defects of air holes and cracks and the likeThe stuffing has strong acid liquid corrosion resistance and is prepared from sulfuric acid solution (1.32 g/cm) at 50 deg.C3) The service life in the steam environment is as long as more than 5 years.
The manufacturing method of the storage battery cover comprises the following steps:
3, cutting the SMC sheets of the vinyl resin/glass fiber system according to a preset shape, and placing the SMC sheets in a classified manner in sequence;
step 4, stacking the sheets on the female die 2;
step 5, closing the die by a hydraulic machine, molding at 30MPa, and maintaining the pressure for 10 min;
step 6, lifting the mold to take out the part, and taking down the threaded insert 1 on the product;
and 7, repairing the flash of the product blank, and post-curing the product at 80 ℃ for 6 h.
The size ratio of the cavity formed by combining the female die 2, the male die and the threaded insert 1 of the storage battery cover to the product is 100: 99.95. the threaded insert 1 can be directly placed at a fixed position of the female die 2, and after a product is cured and formed, the product is demoulded along with the product and then is screwed out of the product.
The method is suitable for manufacturing the battery cover with environmental requirements, and because the punching and cutting can affect the acid resistance of the lead-acid storage battery cover, the corresponding threaded holes are prepared by the threaded inserts 1, the corresponding through holes are prepared by the common inserts, the porous battery cover is formed at one time, and no post-treatment processing is needed, so that the method has no organic processing surface and is greatly optimized for the acid corrosion resistance.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (3)
1. A manufacturing method of a strong corrosion-resistant lead-acid storage battery cover is characterized in that the storage battery cover with a porous structure is manufactured through mould pressing and integral forming, 6-12 pole holes, 2-4 water-cooling pipe holes and 1 or more threaded holes which are uniformly distributed into two rows are formed in the storage battery cover, and at least one threaded hole is formed in the middle of the storage battery cover and is characterized in that: the method comprises the following steps:
step 1, cleaning a female die (2) and a male die, then respectively installing the female die and the male die on a hydraulic machine, and placing a threaded insert (1) on the female die (2) at a position corresponding to a threaded hole;
step 2, heating to 145-150 ℃ for preheating, and mixing the release agent and water according to the weight ratio of 10: 1, uniformly stirring, and spraying the mixture on the inner surface of the half mold and the surface of the threaded insert (1);
step 3, after the release agent is naturally dried, cutting SMC sheets consisting of vinyl resin, glass fiber special yarns, silicon dioxide, fillers and auxiliaries according to a preset shape, and placing the SMC sheets in a classified mode in sequence;
step 4, stacking the sheets on the female die (2);
step 5, closing the die by a hydraulic machine, and ensuring that the overall dimension ratio of the product to the cavity is 99.95: 100, respectively; molding at 30-35 MPa for 10-20 min;
step 6, lifting the mold to take the part, and taking down the threaded insert (1) on the product;
and 7, repairing the flash of the product blank, and post-curing the product at 80 ℃ for 6 h.
2. The manufacturing method of the lead-acid storage battery cover with strong corrosion resistance according to claim 1, wherein the aperture of the pole hole is phi 50-70, the aperture of the water-cooling pipe hole is phi 15-25, and the aperture of the threaded hole is phi 25-60.
3. The method for manufacturing a lead-acid storage battery cover with strong corrosion resistance according to claim 1, wherein the mold release is DAIFREE GW-250.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111478122.8A CN114311739A (en) | 2021-12-06 | 2021-12-06 | Manufacturing method of strong corrosion-resistant lead-acid storage battery cover |
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| CN202111478122.8A CN114311739A (en) | 2021-12-06 | 2021-12-06 | Manufacturing method of strong corrosion-resistant lead-acid storage battery cover |
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| CN114311739A true CN114311739A (en) | 2022-04-12 |
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| CN103434144A (en) * | 2013-07-15 | 2013-12-11 | 吴江固德电材系统有限公司 | One-step molding method for fiber-reinforced resin composite under vacuum impregnation |
| CN103538267A (en) * | 2013-10-10 | 2014-01-29 | 航天特种材料及工艺技术研究所 | Magnetic force expansion forming method and mould |
| CN110313240B (en) * | 2014-02-28 | 2016-09-07 | 南京润泰科技有限公司 | Carbon fiber epoxy based composites ATR series chassis |
| CN110157144A (en) * | 2018-02-26 | 2019-08-23 | 湖南三合汽车新材料有限公司 | A kind of new-energy automobile battery box cover and preparation method thereof |
| CN110791071A (en) * | 2019-11-08 | 2020-02-14 | 淄博火炬能源有限责任公司 | High-strength composite material storage battery cover and preparation method thereof |
| CN112622306A (en) * | 2020-11-26 | 2021-04-09 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Manufacturing method of high-performance resin-based composite material battery box shell |
-
2021
- 2021-12-06 CN CN202111478122.8A patent/CN114311739A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319464A (en) * | 2008-05-30 | 2008-12-10 | 广州市晶邦液压密封技术有限公司 | Self-lubricating materials and technique for producing helicoidal surface underlayer of transmission nut by the same |
| CN103434144A (en) * | 2013-07-15 | 2013-12-11 | 吴江固德电材系统有限公司 | One-step molding method for fiber-reinforced resin composite under vacuum impregnation |
| CN103538267A (en) * | 2013-10-10 | 2014-01-29 | 航天特种材料及工艺技术研究所 | Magnetic force expansion forming method and mould |
| CN110313240B (en) * | 2014-02-28 | 2016-09-07 | 南京润泰科技有限公司 | Carbon fiber epoxy based composites ATR series chassis |
| CN110157144A (en) * | 2018-02-26 | 2019-08-23 | 湖南三合汽车新材料有限公司 | A kind of new-energy automobile battery box cover and preparation method thereof |
| CN110791071A (en) * | 2019-11-08 | 2020-02-14 | 淄博火炬能源有限责任公司 | High-strength composite material storage battery cover and preparation method thereof |
| CN112622306A (en) * | 2020-11-26 | 2021-04-09 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Manufacturing method of high-performance resin-based composite material battery box shell |
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