CN111711048B - Brush production line - Google Patents
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- CN111711048B CN111711048B CN202010601462.4A CN202010601462A CN111711048B CN 111711048 B CN111711048 B CN 111711048B CN 202010601462 A CN202010601462 A CN 202010601462A CN 111711048 B CN111711048 B CN 111711048B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/21—After-treatment
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/21—After-treatment
- C01B32/215—Purification; Recovery or purification of graphite formed in iron making, e.g. kish graphite
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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- Mechanical Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention discloses an electric brush production line, which comprises the following steps: s1: the method comprises the following steps of putting a graphite blank into a stirring kettle, adding hydrofluoric acid into the stirring kettle, stirring the stirring kettle by using a stirring rod every 2-6min for 4-8 times to enable the graphite blank and the hydrofluoric acid to be fully mixed and react to obtain a mixture, putting the mixture into a filter bag, flushing the filter bag by using clean water every 3-7min for 5-9 times, and dehydrating the mixture after flushing to obtain a filter cake. The invention has reasonable design, can purify and grind the graphite blank to ensure that the particle size of the blank is uniform, further can make the product smooth, can fully impregnate and solidify the graphite blank, fully and uniformly diffuse low molecular polymer into graphite powder gaps, mill, expand and assemble the graphite raw material to obtain a finished product of the electric brush, and can inspect and package the finished product of the electric brush to ensure the quality of the product.
Description
Technical Field
The invention relates to the technical field of electric brushes, in particular to an electric brush production line.
Background
The brush is an important component of the motor, which is responsible for conducting current between a rotating part and a stationary part, and is also called a carbon brush because the brush is made of more graphite, and the brush is mostly assembled on a commutator or a slip ring, is a sliding contact body, and needs to have the characteristics of smoothness, wear resistance, good conductivity and the like.
At present, the production process of the electric brush is imperfect, and the phenomenon of short supply and short demand appears in the market of the electric brush along with the continuous expansion of the demand of the electric brush market, so that an electric brush production line is designed to solve the problems.
Disclosure of Invention
The invention aims to solve the problem that the production process of the current brush production line is incomplete, and provides a brush production line which not only can purify and grind graphite blanks to ensure that the particle sizes of the blanks are uniform, further can make products smooth, but also can fully impregnate and solidify the graphite blanks, fully and uniformly diffuse low-molecular polymers into graphite powder gaps, mill, expand and assemble graphite raw materials to obtain finished brushes, and can inspect and package the finished brushes to ensure the quality of the products.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electrical brush production line comprising the steps of:
s1: placing the graphite blank into a stirring kettle, adding hydrofluoric acid into the stirring kettle, stirring the stirring kettle by using a stirring rod every 2-6min for 4-8 times to fully mix and react the graphite blank and the hydrofluoric acid to obtain a mixture, putting the mixture into a filter bag, flushing the filter bag by using clean water every 3-7min for 5-9 times, dehydrating the mixture after flushing to obtain a filter cake, preheating the reaction kettle, putting the filter cake into the reaction kettle, heating the reaction kettle to 200 ℃ and 240 ℃, heating for 20-40min to dry the filter cake to obtain purified graphite, crushing the purified graphite to 16-20mm by a crusher, grinding the crushed purified graphite by a pulverizer, and screening the purified graphite after grinding, taking powdery particles with the particle size of 0.2-0.6 mm;
s2: feeding, putting the powder into dipping tanks with each grid of 40 × 115mm, performing vacuum treatment for 20-24min, injecting low molecular copolymer into the dipping tanks, and keeping for 24-28 min;
s3: primary dipping and curing, adjusting the pressure of a dipping tank to 0.5-0.8MPa, keeping the pressure and the temperature of the dipping tank for 50-54min, respectively adjusting the pressure and the temperature of a polymerization tank to 0.4-0.8MPa and 120-;
s4: secondary dipping and curing, namely adjusting the pressure and the temperature of a polymerization tank to 0.6-1MPa and 126-;
s5: milling, namely using a diamond or diamond-coated milling cutter, passivating the cutting edge of the milling cutter, and using a negative rake angle as a rake angle of the milling cutter to perform forward milling on the graphite raw material;
s6: reaming, namely reaming the graphite raw material by using a reamer, wherein the diameter of the reamed hole is 2.8-3.2mm, so as to obtain a brush body;
s7: assembling, namely assembling the brush body with a lead, a wire coil, a spring, a binding post and a brush cap in sequence to obtain the electric brush;
s8: finished product inspection, the assembled electric brush is inspected, the electric brush has smooth appearance, uniform color, no particles, no oxidation and no defect of performance influence caused by paint removal, and the wire coil is orderly arranged and is smoothly and tightly wound on a wire coil without a wire phenomenon;
s9: and (5) packaging, namely packaging the electric brushes qualified by finished product inspection by using an air bag and then boxing.
Preferably, in S1, the product with the larger particles that are not qualified by screening is continuously fed into a mill for grinding.
Preferably, in S4, the degree of solidification of the low molecular weight copolymer impregnated into the pores of the graphite raw material is 98.5 to 98.9%.
Preferably, in the S2, the low molecular copolymer is p-divinylbenzene containing 38 to 42% of ethyl phenylacetate.
Preferably, in S1, the graphite blank is in a powder form, and has a particle size of 46-50 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. through adding hydrofluoric acid in to graphite stock, can purify the processing to graphite, in order to detach the impurity in the graphite stock, through carrying out breakage, grinding, screening processing to purification graphite, can make graphite powder material particle diameter even, continue to put into the milling machine and grind the product of the unqualified great granule of screening, can avoid causing the raw materials extravagant, carry out once flooding solidification, the secondary flooding solidification respectively to powder graininess graphite, can make the abundant even diffusion of low molecular polymer to the graphite powder gap in, mill the mill to the graphite raw materials, the reaming, the assembly, can obtain into the brush finished product.
2. Through examining the brush finished product, can ensure the outward appearance of product and meet the requirements, the defect of not influencing the performance, and then can ensure the product quality, packs the brush finished product through using the air bag, can avoid it to take place the damage phenomenon in the transportation.
In conclusion, the invention has reasonable design, provides a perfect electric brush production line, can purify and grind graphite blanks to ensure that the particle sizes of the graphite blanks are uniform, further can make products smooth, can fully impregnate and solidify the graphite blanks, fully and uniformly diffuse low-molecular polymers into graphite powder gaps, mill, expand and assemble graphite raw materials to obtain finished electric brush products, and can inspect and package the finished electric brush products to ensure the product quality.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
The present invention will be further illustrated with reference to the following specific examples.
Example 1
The embodiment provides an electric brush production line, including the following steps:
s1: putting a graphite blank into a stirring kettle, wherein the graphite blank is powdery and has the particle size of 46mm, adding hydrofluoric acid into the stirring kettle, stirring the stirring kettle by using a stirring rod every 2min for 4 times to fully mix and react the graphite blank and the hydrofluoric acid to obtain a mixture, putting the mixture into a filter bag, flushing the filter bag by using clean water every 3min for 5 times, dewatering the mixture after flushing to obtain a filter cake, preheating the reaction kettle, putting the filter cake into the reaction kettle, heating the reaction kettle to 200 ℃, heating for 20min to dry the filter cake to obtain purified graphite, crushing the purified graphite to 16mm by using a crusher, grinding the crushed purified graphite by using a pulverizer, sieving the ground purified graphite by using a sieving machine to obtain powdery particles with the particle size of 0.2mm, continuously putting the screened unqualified large-particle products into a flour mill for grinding;
s2: feeding, filling the powder particles into a dipping tank with each grid of 40 × 115mm, performing vacuum treatment for 20min, injecting low molecular copolymer into the dipping tank, and keeping for 24min, wherein the low molecular copolymer is p-divinylbenzene containing 38% of ethyl phenylacetate;
s3: primary dipping and curing, adjusting the pressure of a dipping tank to 0.5MPa, keeping the pressure and the temperature of the polymerization tank for 50min, respectively adjusting the pressure and the temperature of the polymerization tank to 0.4MPa and 120 ℃, filling the dipped powdery particles into the polymerization tank and continuously heating for 6h, curing the low-molecular copolymer in pores of the powdery particles, heating the polymerization tank to 210 ℃ at a heating rate of 20 ℃/h, continuously heating for 2h, heating the polymerization tank to 280 ℃ at a heating rate of 10 ℃/h, continuously heating for 3h, finally heating the polymerization tank to 340 ℃ at a heating rate of 15 ℃/h, and continuously heating for 5h to obtain a primary dipping cured product;
s4: performing secondary impregnation curing, namely adjusting the pressure and the temperature of a polymerization tank to 0.6MPa and 126 ℃ respectively, putting the primary impregnation cured material into the polymerization tank and continuously heating for 7 hours, wherein the low-molecular copolymer is continuously cured in the purified graphite pores, heating the polymerization tank to 400 ℃, and continuously heating for h to obtain a graphite raw material, wherein the curing degree of the low-molecular copolymer impregnated into the graphite raw material pores is 98.5%;
s5: milling, namely using a diamond or diamond-coated milling cutter, passivating the cutting edge of the milling cutter, and using a negative rake angle as a rake angle of the milling cutter to perform forward milling on the graphite raw material;
s6: reaming, namely reaming the graphite raw material by using a reamer, wherein the diameter of the reamed hole is 2.8mm, so as to obtain a brush body;
s7: assembling, namely assembling the brush body with a lead, a wire coil, a spring, a binding post and a brush cap in sequence to obtain the electric brush;
s8: finished product inspection, the assembled electric brush is inspected, the electric brush has smooth appearance, uniform color, no particles, no oxidation and no defect of performance influence caused by paint removal, and the wire coil is orderly arranged and is smoothly and tightly wound on a wire coil without a wire phenomenon;
s9: and (5) packaging, namely packaging the electric brushes qualified by finished product inspection by using an air bag and then boxing.
Example 2
The embodiment provides an electric brush production line, including the following steps:
s1: putting a graphite blank into a stirring kettle, wherein the graphite blank is powdery and has the particle size of 48mm, adding hydrofluoric acid into the stirring kettle, stirring the stirring kettle by using a stirring rod every 4min for 6 times to fully mix and react the graphite blank and the hydrofluoric acid to obtain a mixture, putting the mixture into a filter bag, flushing the filter bag by using clean water every 5min for 7 times, dewatering the mixture after flushing to obtain a filter cake, preheating the reaction kettle, putting the filter cake into the reaction kettle, heating the reaction kettle to 220 ℃, heating for 30min to dry the filter cake to obtain purified graphite, crushing the purified graphite to 18mm by using a crusher, grinding the crushed purified graphite by using a pulverizer, sieving the crushed purified graphite by using a sieving machine to obtain powdery particles with the particle size of 0.4mm, continuously putting the screened unqualified large-particle products into a flour mill for grinding;
s2: feeding, filling the powder particles into a dipping tank with each grid of 40 × 115mm, performing vacuum treatment for 22min, injecting low molecular copolymer into the dipping tank, and keeping for 26min, wherein the low molecular copolymer is p-divinylbenzene containing 40% of ethyl phenylacetate;
s3: primary dipping and curing, adjusting the pressure of a dipping tank to 0.6MPa, keeping the pressure for 52min, adjusting the pressure and the temperature of a polymerization tank to 0.6MPa and 122 ℃ respectively, filling the dipped powdery particles into the polymerization tank and continuously heating for 7h, curing the low-molecular copolymer in pores of the powdery particles, heating the polymerization tank to 216 ℃ at a heating rate of 22 ℃/h, continuously heating for 3h, heating the polymerization tank to 300 ℃ at a heating rate of 12 ℃/h, continuously heating for 4h, finally heating the polymerization tank to 368 ℃ at a heating rate of 17 ℃/h, and continuously heating for 6h to obtain a primary dipping cured product;
s4: performing secondary impregnation and curing, namely adjusting the pressure and the temperature of a polymerization tank to 0.8MPa and 128 ℃ respectively, putting the primary impregnation cured material into the polymerization tank and continuously heating for 9 hours, wherein the low-molecular copolymer is continuously cured in the pores of the purified graphite, heating the polymerization tank to 420 ℃, and continuously heating for 5 hours to obtain a graphite raw material, wherein the curing degree of the low-molecular copolymer impregnated into the pores of the graphite raw material is 98.7%;
s5: milling, namely using a diamond or diamond-coated milling cutter, passivating the cutting edge of the milling cutter, and using a negative rake angle as a rake angle of the milling cutter to perform forward milling on the graphite raw material;
s6: reaming, namely reaming the graphite raw material by using a reamer, wherein the diameter of the reamed hole is 3mm, so as to obtain a brush body;
s7: assembling, namely assembling the brush body with a lead, a wire coil, a spring, a binding post and a brush cap in sequence to obtain the electric brush;
s8: finished product inspection, the assembled electric brush is inspected, the electric brush has smooth appearance, uniform color, no particles, no oxidation and no defect of performance influence caused by paint removal, and the wire coil is orderly arranged and is smoothly and tightly wound on a wire coil without a wire phenomenon;
s9: and (5) packaging, namely packaging the electric brushes qualified by finished product inspection by using an air bag and then boxing.
Example 3
The embodiment provides an electric brush production line, including the following steps:
s1: putting a graphite blank into a stirring kettle, wherein the graphite blank is powdery and has the particle size of 49mm, adding hydrofluoric acid into the stirring kettle, stirring the stirring kettle by using a stirring rod every 5min for 7 times to fully mix and react the graphite blank and the hydrofluoric acid to obtain a mixture, putting the mixture into a filter bag, flushing the filter bag by using clear water every 6min for 8 times, dewatering the mixture after flushing to obtain a filter cake, preheating the reaction kettle, putting the filter cake into the reaction kettle, heating the reaction kettle to 230 ℃, heating for 35min to dry the filter cake to obtain purified graphite, crushing the purified graphite to 19mm by using a crusher, grinding the crushed purified graphite by using a pulverizer, sieving the ground purified graphite by using a sieving machine to obtain powdery particles with the particle size of 0.5mm, continuously putting the screened unqualified large-particle products into a flour mill for grinding;
s2: feeding, filling the powder particles into a dipping tank with each grid of 40 × 115mm, performing vacuum treatment for 23min, and then injecting a low-molecular copolymer into the dipping tank, and keeping for 27min, wherein the low-molecular copolymer is p-divinylbenzene containing 41% of ethyl phenylacetate;
s3: primary dipping and curing, adjusting the pressure of a dipping tank to 0.7MPa, keeping the pressure and the temperature of a polymerization tank for 53min, respectively adjusting the pressure and the temperature of the polymerization tank to 0.7MPa and 123 ℃, filling the dipped powdery particles into the polymerization tank and continuously heating for 7.5h, curing the low-molecular copolymer in pores of the powdery particles, heating the polymerization tank to 219 ℃ at a heating rate of 23 ℃/h, continuously heating for 3.5h, heating the polymerization tank to 310 ℃ at a heating rate of 13 ℃/h, continuously heating for 4.5h, finally heating the polymerization tank to 382 ℃ at a heating rate of 18 ℃/h, and continuously heating for 6.5h to obtain a primary dipping cured product;
s4: performing secondary impregnation curing, namely adjusting the pressure and the temperature of a polymerization tank to 0.9MPa and 129 ℃ respectively, putting the primary impregnation cured material into the polymerization tank and continuously heating for 10 hours, wherein the low-molecular copolymer is continuously cured in the pores of the purified graphite, heating the polymerization tank to 430 ℃, and continuously heating for 5.5 hours to obtain a graphite raw material, wherein the curing degree of the low-molecular copolymer impregnated into the pores of the graphite raw material is 98.8%;
s5: milling, namely using a diamond or diamond-coated milling cutter, passivating the cutting edge of the milling cutter, and using a negative rake angle as a rake angle of the milling cutter to perform forward milling on the graphite raw material;
s6: reaming, namely reaming the graphite raw material by using a reamer, wherein the diameter of the reamed hole is 3.1mm, so as to obtain a brush body;
s7: assembling, namely assembling the brush body with a lead, a wire coil, a spring, a binding post and a brush cap in sequence to obtain the electric brush;
s8: finished product inspection, the assembled electric brush is inspected, the electric brush has smooth appearance, uniform color, no particles, no oxidation and no defect of performance influence caused by paint removal, and the wire coil is orderly arranged and is smoothly and tightly wound on a wire coil without a wire phenomenon;
s9: packaging, namely packaging the electric brushes qualified by finished product inspection by using an air bag and then boxing
Example 4
The embodiment provides an electric brush production line, including the following steps:
s1: graphite blank, placing the graphite blank into a stirring kettle, wherein the graphite blank is powder and has the particle size of 50mm, adding hydrofluoric acid into the stirring kettle, stirring the stirring kettle by using a stirring rod every 6min for 8 times to fully mix and react the graphite blank and the hydrofluoric acid to obtain a mixture, putting the mixture into a filter bag, flushing the filter bag by using clean water every 7min for 9 times, dewatering the mixture after flushing to obtain a filter cake, preheating the reaction kettle, putting the filter cake into the reaction kettle, heating the reaction kettle to 240 ℃, heating for 40min to dry the filter cake to obtain purified graphite, crushing the purified graphite to 20mm by using a crusher, grinding the crushed purified graphite by using a pulverizer, sieving the crushed purified graphite by using a sieving machine to obtain powder particles with the particle size of 0.6mm, continuously putting the screened unqualified large-particle products into a flour mill for grinding;
s2: feeding, filling the powder particles into a dipping tank with each grid of 40 × 115mm, performing vacuum treatment for 24min, injecting low molecular copolymer into the dipping tank, and keeping for 28min, wherein the low molecular copolymer is p-divinylbenzene containing 42% of ethyl phenylacetate;
s3: primary dipping and curing, adjusting the pressure of a dipping tank to 0.8MPa, keeping the pressure for 54min, respectively adjusting the pressure and the temperature of a polymerization tank to 0.8MPa and 124 ℃ of 120-;
s4: performing secondary impregnation curing, namely adjusting the pressure and the temperature of a polymerization tank to 1MPa and 130 ℃ respectively, putting the primary impregnation cured material into the polymerization tank and continuously heating for 11 hours, wherein the low-molecular copolymer is continuously cured in the purified graphite pores, heating the polymerization tank to 440 ℃, and continuously heating for 6 hours to obtain a graphite raw material, wherein the curing degree of the low-molecular copolymer impregnated into the graphite raw material pores is 98.9%;
s5: milling, namely using a diamond or diamond-coated milling cutter, passivating the cutting edge of the milling cutter, and using a negative rake angle as a rake angle of the milling cutter to perform forward milling on the graphite raw material;
s6: reaming, namely reaming the graphite raw material by using a reamer, wherein the diameter of the reamed hole is 3.2mm, so as to obtain a brush body;
s7: assembling, namely assembling the brush body with a lead, a wire coil, a spring, a binding post and a brush cap in sequence to obtain the electric brush;
s8: finished product inspection, the assembled electric brush is inspected, the electric brush has smooth appearance, uniform color, no particles, no oxidation and no defect of performance influence caused by paint removal, and the wire coil is orderly arranged and is smoothly and tightly wound on a wire coil without a wire phenomenon;
s9: and (5) packaging, namely packaging the electric brushes qualified by finished product inspection by using an air bag and then boxing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. An electrical brush production line comprising the steps of:
s1: placing the graphite blank into a stirring kettle, adding hydrofluoric acid into the stirring kettle, stirring the stirring kettle by using a stirring rod every 2-6min for 4-8 times to fully mix and react the graphite blank and the hydrofluoric acid to obtain a mixture, putting the mixture into a filter bag, flushing the filter bag by using clean water every 3-7min for 5-9 times, dehydrating the mixture after flushing to obtain a filter cake, preheating the reaction kettle, putting the filter cake into the reaction kettle, heating the reaction kettle to 200 ℃ and 240 ℃, heating for 20-40min to dry the filter cake to obtain purified graphite, crushing the purified graphite to 16-20mm by a crusher, grinding the crushed purified graphite by a pulverizer, and screening the purified graphite after grinding, taking powdery particles with the particle size of 0.2-0.6 mm;
s2: feeding, putting the powder into dipping tanks with each grid of 40 × 115mm, performing vacuum treatment for 20-24min, injecting low molecular copolymer into the dipping tanks, and keeping for 24-28 min;
s3: primary dipping and curing, adjusting the pressure of a dipping tank to 0.5-0.8MPa, keeping the pressure and the temperature of the dipping tank for 50-54min, respectively adjusting the pressure and the temperature of a polymerization tank to 0.4-0.8MPa and 120-;
s4: secondary dipping and curing, namely adjusting the pressure and the temperature of a polymerization tank to 0.6-1MPa and 126-;
s5: milling, namely using a diamond or diamond-coated milling cutter, passivating the cutting edge of the milling cutter, and using a negative rake angle as a rake angle of the milling cutter to perform forward milling on the graphite raw material;
s6: reaming, namely reaming the graphite raw material by using a reamer, wherein the diameter of the reamed hole is 2.8-3.2mm, so as to obtain a brush body;
s7: assembling, namely assembling the brush body with a lead, a wire coil, a spring, a binding post and a brush cap in sequence to obtain the electric brush;
s8: finished product inspection, the assembled electric brush is inspected, the electric brush has smooth appearance, uniform color, no particles, no oxidation and no defect of performance influence caused by paint removal, and the wire coil is orderly arranged and is smoothly and tightly wound on a wire coil without a wire phenomenon;
s9: and (5) packaging, namely packaging the electric brushes qualified by finished product inspection by using an air bag and then boxing.
2. The brush production line of claim 1, wherein the product of S1, which is sieved to reject larger particles, is continuously fed to a mill for grinding.
3. The brush production line according to claim 1, wherein the degree of solidification of the low-molecular copolymer impregnated into the pores of the graphite raw material in S4 is 98.5 to 98.9%.
4. The brush production line of claim 1, wherein in S2, the low molecular weight copolymer is p-divinylbenzene containing 38 to 42% of ethyl phenylacetate.
5. The brush production line of claim 1, wherein in S1, the graphite blank is in powder form and has a particle size of 46-50 mm.
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| CN202010601462.4A CN111711048B (en) | 2020-06-29 | 2020-06-29 | Brush production line |
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| CN202010601462.4A CN111711048B (en) | 2020-06-29 | 2020-06-29 | Brush production line |
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| CN111711048B true CN111711048B (en) | 2021-05-25 |
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| CN113083818B (en) * | 2021-03-30 | 2022-09-16 | 河北中天兰清环境科技有限公司 | Processing method for cleaning and recycling polytetrafluoroethylene reaction kettle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062882A (en) * | 1990-12-30 | 1992-07-22 | 西安市长信高科技公司 | Pure refined coal and high purity graphite powder refining process and equipment |
| US5168620A (en) * | 1990-11-15 | 1992-12-08 | Westinghouse Electric Corp. | Shunt attachment and method for interfacing current collection systems |
| CN1323082A (en) * | 2001-06-26 | 2001-11-21 | 宝山钢铁股份有限公司 | Carbon fiber and carbon graphite electric brush material and its production process |
| EP2406370A1 (en) * | 2009-03-10 | 2012-01-18 | SRS Energy | Algae biomass fractionation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020168314A1 (en) * | 2001-03-08 | 2002-11-14 | Roemmler Mike G. | Method of making expanded graphite with high purity and related products |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168620A (en) * | 1990-11-15 | 1992-12-08 | Westinghouse Electric Corp. | Shunt attachment and method for interfacing current collection systems |
| CN1062882A (en) * | 1990-12-30 | 1992-07-22 | 西安市长信高科技公司 | Pure refined coal and high purity graphite powder refining process and equipment |
| CN1323082A (en) * | 2001-06-26 | 2001-11-21 | 宝山钢铁股份有限公司 | Carbon fiber and carbon graphite electric brush material and its production process |
| EP2406370A1 (en) * | 2009-03-10 | 2012-01-18 | SRS Energy | Algae biomass fractionation |
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