CN202107785U - Clean and environment-friendly iron wire galvanizing device - Google Patents
Clean and environment-friendly iron wire galvanizing device Download PDFInfo
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- CN202107785U CN202107785U CN2011202123050U CN201120212305U CN202107785U CN 202107785 U CN202107785 U CN 202107785U CN 2011202123050 U CN2011202123050 U CN 2011202123050U CN 201120212305 U CN201120212305 U CN 201120212305U CN 202107785 U CN202107785 U CN 202107785U
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Abstract
The utility model relates to a clean and environment-friendly iron wire galvanizing device, which mainly comprises a wire discharging machine (1), a polisher (2), a water tank (3), a first galvanizing bath (4), a second galvanizing bath (5), a third galvanizing bath (6), a cold water tank (7), a hot water tank (8) and a wire receiving machine (9), wherein the wire discharging machine (1), the polisher (2), the water tank (3), the first galvanizing bath (4), the second galvanizing bath (5), the third galvanizing bath (6), the cold water tank (7), the hot water tank (8) and the wire receiving machine (9) are provided with idler wheel groups; each idler wheel group consists of an idler wheel, a roller shaft and a strut; an iron wire of the wire discharging machine (1) and an iron wire of the wire receiving machine (9) are connected end to end by each idler wheel; the clean and environment-friendly iron wire galvanizing device is free of cyanogen, needs no acid washing, does not discharge the circulating water, is clean and environment-friendly, can replace the traditional iron wire galvanizing equipment, saves water, causes no pollution to the environment, reduces the labour intensity of the workers, ensures the workers to get rid of the work environment with strong acid mist, eliminates the injury caused by the acid to body of the worker, reduces the production cost of the galvanized iron wire, and increases the competitiveness of the enterprise.
Description
Technical field
The utility model relates to a kind of galvanized wire equipment, particularly a kind of clean environment firendly iron wire galvanizing rig.
Background technology
In the prior art, iron wire galvanizing rig and technology are that pickling galvanized wire equipment and technology are following:
1, in the prior art, when step 1 cold-drawn, will use a large amount of hot candied powder, the hot candied powder that dances in the air in the production process spreads in the air, the dust heavy damage of formation workman's respiratory system.Just because this, the open-air or semienclosed mode of production of most of many employings of iron wire factory makes and produces the interference of having to be limited by weather and season; Sleety weather can't be produced, and northern workman has to endure to the fullest extent severe cold winter.
2, when step 3 pair iron wire eliminates rust, need use a large amount of hydrochloric acid, (consumption acid was 30 kilograms when iron wire per ton was produced), the practice is to dig a pond underground usually, and hydrochloric acid is poured into wherein.Hydrochloric acid is a kind of strong acid, has strong impulse property smell, and highly volatile; Long-term contact; Cause chronic rhinitis, bronchitis, tooth acid corrosion, can cause acute poisoning, nose, oral mucosa are had burning sensation; Eye, skin exposure can be burnt, and hydrochloric acid runs into amide then can generate huge malicious prussic acid.
3, in step 3,4, produce a large amount of spent acid in the production process, acid waste water, oily(waste)water, not treated usually directly being discharged in the environment, often evaporable HCI gas also can pollute surrounding enviroment.
4, in step 5a, need iron wire is placed on the drum of rotation, generally: every bundle of iron wire focuses on the 300-500 kilogram; Each drum takes up an area of about 1 square metre, needs 14 to 20 drums altogether, and the workman needs seven, eight tons of iron wires are moved on the drum every day; Need observe the drum of tens rotations constantly, and must shuttle between tens coil holder, labor strength is big, production efficiency is low; The new worker can't be competent at, and the recruitment difficulty is big, and production cost is high.
5, in step 5h, c; The water of tank is perennial draingage in the rinse bath; Water inlet constantly flows into rinse bath with the flow velocity of 3000m3/h, and the sewage that overflows does not then add processing, and various producers select stealthily directly to be discharged to the physical environment from drain; Cause groundwater pollution, the harm that brings to physical environment is huge.What washing and plating after washing used before the plating all is flowing water, all will discharge the rinse water after tens tons even the up to a hundred tons of uses every day on every production line, a large amount of sewage discharges is not only arranged, and wasted water resources greatly.
The utility model content
In order to solve the technological deficiency that prior art exists, the purpose of the utility model is to provide a kind of no cyanogen, no pickling, and recirculated water does not discharge, clean and environment-friendly galvanized wire device.The traditional galvanized wire equipment of this device instead, water saving, environmentally safe; Reduced working strength of workers, made the workman break away from the Working environment of strong acid mist, eliminated the injury of acid workman's health; Reduce the production cost of galvanized wire, improved Enterprises'Competitiveness.
To achieve these goals; The technical scheme of the utility model is: a kind of clean environment firendly iron wire galvanizing rig; It is characterized in that: this iron wire galvanizing rig mainly comprises paying out machine, polishing machine, tank, first zinc bath, second zinc bath, the 3rd zinc bath, cold rinse bank, hot water tank and wire coiler, and wherein: on paying out machine, polishing machine, tank, first zinc bath, second zinc bath, the 3rd zinc bath, cold rinse bank, hot water tank and wire coiler, be provided with roller set, roller set is made up of roller, roller shaft and bearing; The iron wire of paying out machine and the iron wire of wire coiler join end to end through each roller set; Iron wire is affected by wire coiler and passes through paying out machine successively to polishing machine, with iron wire surface finish, polishing, removes rust stain dust or greasy dirt by the polishing material in the polishing machine; Clean the iron wire surface through tank again; Then, adopt conventional method and electroplate liquid to electroplate through first zinc bath, second zinc bath, the 3rd zinc bath, the iron wire after electroplating cleans the iron wire surface through cold rinse bank and hot water tank; Twine by wire coiler at last, go round and begin again.
Wherein: this iron wire galvanizing rig also comprises two cold water deposition circulation grooves and pipeline, and promptly first cold water deposition circulation groove, second cold water precipitate circulation groove, the pipeline that first cold water deposition circulation groove is communicated with cold rinse bank, the pipeline that first cold water deposition circulation groove is communicated with second cold water deposition circulation groove, the pipeline that second cold water deposition circulation groove is communicated with tank, first zinc bath, second zinc bath, the 3rd zinc bath; Wherein: this iron wire galvanizing rig also comprises two hot water deposition circulation grooves and pipeline, and promptly first hot water deposition circulation groove, second hot water precipitate circulation groove, the pipeline that first hot water deposition circulation groove is communicated with hot water tank, the pipeline that first hot water deposition circulation groove is communicated with second hot water deposition circulation groove, the pipeline that second hot water deposition circulation groove is communicated with cold rinse bank and hot water tank.
Described polishing material is 6 orders-120 purpose silit or brown corundum or white fused alumina or garnet.
Described electroplate liquid is the zinc sulfate electroplate liquid.
A kind of clean environment firendly iron wire zincincation of the utility model may further comprise the steps:
Step 2: get the raw materials ready: in polishing machine, fill polishing material; Fill tap water at tank; The electroplate liquid of in first zinc bath, second zinc bath, the 3rd zinc bath, filling out; In cold rinse bank, fill tap water, in hot water tank, be provided with electricradiator and temperature regulator, the temperature of in hot water tank, inciting somebody to action through electricradiator and temperature regulator behind the filling tap water heats and is controlled at 70-90 ℃.
Step 3: galvanized wire operation: start wire coiler, under the traction of wire coiler, paying out machine is put iron wire; Iron wire with iron wire surface finish, polishing, is removed rust stain dust or greasy dirt by polishing machine through polishing machine; Clean the iron wire surface through tank again, then, adopt conventional method and electroplate liquid to electroplate through first zinc bath, second zinc bath, the 3rd zinc bath; Iron wire after electroplating cleans the iron wire surface through cold rinse bank and hot water tank, is twined by wire coiler at last, goes round and begins again.
Wherein, cold rinse bank is provided with circulating backwater pipeline and outlet conduit, and the circulating backwater pipeline is communicated with second hot water deposition circulation groove; Outlet conduit is communicated with first cold water deposition circulation groove; First cold water deposition circulation groove is provided with the pipeline, second cold water deposition circulation groove that are communicated with second cold water deposition circulation groove and is provided with the pipeline that is communicated with tank, first zinc bath, second zinc bath, the 3rd zinc bath, and through deposition, supernatant gets into second cold water deposition circulation groove through pipeline to the cold water of cold rinse bank outlet conduit at first cold water deposition circulation groove; Dregs are deposited in first cold water deposition circulation groove bottom; Regularly remove, get into second cold water deposition circulation groove cold water, supernatant gets into tank, first zinc bath, second zinc bath, the 3rd zinc bath through pipeline; Be deposited in second cold water deposition circulation groove bottom dregs, regularly remove.
Wherein, hot water tank is provided with circulating backwater pipeline and outlet conduit, and inlet channel is communicated with second hot water deposition circulation groove; Outlet conduit is communicated with first hot water deposition circulation groove; First hot water deposition circulation groove is provided with the pipeline, second hot water deposition circulation groove that are communicated with second hot water deposition circulation groove and is provided with the pipeline that is communicated with cold rinse bank and hot water tank, and through deposition, supernatant gets into second hot water deposition circulation groove through pipeline to the hot water of hot water tank outlet conduit at first hot water deposition circulation groove; Dregs are deposited in first hot water deposition circulation groove bottom; Regularly remove, get into second hot water deposition circulation groove hot water, supernatant gets into cold rinse bank and hot water tank through pipeline; Be deposited in second cold water deposition circulation groove bottom dregs, regularly remove.
Described polishing material is 6 orders-120 purpose silit or brown corundum or white fused alumina or garnet.
Described electroplate liquid is the zinc sulfate electroplate liquid.
Above-described polishing material and electroplate liquid are all commercially available.
The beneficial effect of the utility model is: because after adopting such scheme; No cyanogen, no pickling, recirculated water do not discharge, and have replaced the acid pickling step during galvanized wire tradition old law is produced, and have removed the perennial draingage operator scheme; Reduced working strength of workers; Improved workman's Working environment, reduced production cost of products, reduced pollution greatly environment.This method adopts the acid zinc sulfate prescription that is fit to the wire rod characteristic, belongs to non-cyanogen galvanization.Adopt paying out machine to replace traditional draw drum, reduce working strength of workers, reduced workman's quantity, improved production efficiency, the security that has improved equipment with can be handling; Adopt polishing machine to iron wire automatically grinding, polishing, reach derust, dust separating purpose, replaced the acid pickling step of traditional salt soak; Improved workman's production environment; Reduced harm, removed the pollution of acid, reduced production cost environment to environment.Only need three zinc baths, changed traditional necessary four zinc baths, reduced production cost, reduced the floor space of production line; The pipeline of first hot water deposition circulation groove and second hot water deposition circulation groove and connection is set, hot water behind sedimentation and filtration, a part joins cold rinse bank, and a part is returned again to be added in the hot water tank and is recycled.
Be provided with the pipeline of first cold water deposition circulation groove and second cold water deposition circulation groove and connection; Cold water behind sedimentation and filtration; Cold water part behind sedimentation and filtration can be made into saturated solution with zinc sulfate and return and be added to three zinc baths as replenishing liquid, and another part returns again to be added in the cold rinse bank and recycles; In whole process of production, only need respectively to inject 50 kilograms tap water every day and get final product to cold rinse bank and hot water tank.
In whole galvanized wire production process, realized the recycle of water, compare water saving 98% with traditional technology, remove the pollution of waste water to environment, handle at precipitated impurities unified useless station of danger of delivering to after collecting, and produces 1 ton of galvanized wire and produce 0.3 kilogram of dried impurity.
Description of drawings
Fig. 1 is the synoptic diagram of a kind of clean environment firendly iron wire galvanizing rig of the utility model.
Label in the accompanying drawing:
1. paying out machine, 2. polishing machine, 3. tank, 4. first zinc bath, 5. second zinc bath; 6. the 3rd zinc bath, 7. cold rinse bank, 7a. pipeline, 8. hot water tank, 8a. pipeline; 9. wire coiler, 10. first hot water deposition circulation groove, 10a. pipeline, 11, second hot water deposition circulation groove, 11a. pipeline; 12. first cold water deposition circulation groove, 12a. pipeline, 13, second cold water deposition circulation groove, 13a. pipeline.
Embodiment
Be further described below in conjunction with the embodiment of Figure of description a kind of clean environment firendly iron wire of the utility model galvanizing rig.
Referring to Fig. 1: a kind of clean environment firendly iron wire galvanizing rig of the utility model; This iron wire galvanizing rig mainly comprises paying out machine 1, polishing machine 2, tank 3, first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6, cold rinse bank 7, hot water tank 8 and wire coiler 9; Wherein: on paying out machine 1, polishing machine 2, tank 3, first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6, cold rinse bank 7, hot water tank 8 and wire coiler 9, be provided with roller set; Roller set is made up of roller, roller shaft and bearing, and the iron wire of the iron wire of paying out machine 1 and wire coiler 9 joins end to end through each roller set, and iron wire is affected by wire coiler 9 and passes through paying out machine 1 successively to polishing machine 2; By the polishing material in the polishing machine 2 with iron wire surface finish, polishing; Remove rust stain dust or greasy dirt, clean the iron wire surface through tank 3 again, then; Adopt electroplate liquids to electroplate through first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6; Iron wire after electroplating cleans the iron wire surface through cold rinse bank 7 and hot water tank 8, is twined by wire coiler 9 at last, goes round and begins again;
Wherein: this iron wire galvanizing rig also comprises two cold water deposition circulation grooves and pipeline, and promptly the pipeline 7a that is communicated with cold rinse bank of first cold water deposition circulation groove 12, second cold water deposition circulation groove 13, first cold water deposition circulation groove 12, first cold water deposition circulation groove 12 and second cold water precipitate pipeline 12a, second cold water that circulation groove 13 is communicated with and precipitates the pipeline 13a that circulation groove 13 and tank 3, first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6 are communicated with;
Wherein: this iron wire galvanizing rig also comprises two hot water deposition circulation grooves and pipeline, and promptly first hot water deposition circulation groove 10, second hot water precipitate circulation groove 11, the pipeline 8a that first hot water deposition circulation groove 10 is communicated with hot water tank 8, the pipeline 10a that first hot water deposition circulation groove 10 is communicated with second hot water deposition circulation groove 11, the pipeline 11a that second hot water deposition circulation groove 11 is communicated with cold rinse bank 7 and hot water tank 8.
A kind of clean environment firendly iron wire zincincation of the utility model may further comprise the steps:
Step 2: get the raw materials ready: in polishing machine 2, fill polishing material; Fill tap water at tank 3; In first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6, fill electroplate liquid; In cold rinse bank 7, fill tap water, in hot water tank 8, be provided with electricradiator and temperature regulator, the temperature of in hot water tank 8, inciting somebody to action through electricradiator and temperature regulator behind the filling tap water heats and is controlled at 70-90 ℃.
Step 3: galvanized wire operation: start wire coiler 9, under the traction of wire coiler 9, paying out machine 1 is put iron wire; Iron wire with iron wire surface finish, polishing, is removed rust stain dust or greasy dirt by polishing machine 2 through polishing machine 2; Clean the iron wire surface through tank 3 again; Then, adopt conventional method and electroplate liquid to electroplate through first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6, the iron wire after electroplating cleans the iron wires surface through cold rinse bank 7 and hot water tank 8; Twine by wire coiler 9 at last, go round and begin again.
Wherein, Cold rinse bank 7 is provided with circulating backwater pipeline 11a and outlet conduit 7a; Circulating backwater pipeline 11a and second hot water deposition circulation groove 11 is communicated with, and outlet conduit 7a is communicated with first cold water deposition circulation groove 12, and first cold water precipitates circulation groove 12 and is provided with and precipitates pipeline 12a, second cold water that circulation groove 13 is communicated with second cold water and precipitate circulation groove 13 and be provided with the pipeline 13a that is communicated with tank 3, first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6; The cold water of cold rinse bank 7 outlet conduit 7a is in first cold water deposition circulation groove, 12 warp depositions; Supernatant gets into second cold water deposition circulation groove 13 through pipeline 12a, and dregs are deposited in first cold water deposition circulation groove, 12 bottoms, regularly remove; Get into the cold water of second cold water deposition circulation groove 13; Supernatant gets into tank 3, first zinc bath 4, second zinc bath 5, the 3rd zinc bath 6 through pipeline 13a, is deposited in second cold water deposition circulation groove, 13 bottom dregs, regularly removes.
Wherein, Hot water tank 8 is provided with circulating backwater pipeline 11a and outlet conduit 8a; Circulating backwater pipeline 11a is communicated with second hot water deposition circulation groove 11, and outlet conduit 8a is communicated with first hot water deposition circulation groove 10, and first hot water deposition circulation groove 10 is provided with the pipeline 10a, second hot water deposition circulation groove 11 that are communicated with second hot water deposition circulation groove 11 and is provided with the circulating backwater pipeline 11a that is communicated with cold rinse bank 7 and hot water tank 8; The hot water of hot water tank 8 outlet conduit 8a is in first hot water deposition circulation groove, 10 warp depositions; Supernatant gets into second hot water deposition circulation groove 11 through pipeline 10a, and dregs are deposited in first hot water deposition circulation groove, 10 bottoms, regularly remove; Get into second hot water deposition circulation groove, 11 hot water; Supernatant gets into cold rinse bank 7 and hot water tank 8 through circulating backwater pipeline 11a, is deposited in second cold water deposition circulation groove, 11 bottom dregs, regularly removes.
Described polishing material is 6 orders-120 purpose silit or brown corundum or white fused alumina or garnet.
Described electroplate liquid is the zinc sulfate electroplate liquid.
Implementation result:
A factory that produces 3000 tons of galvanized wires, compared with prior art:
1, indoor production has overcome the open-air or semienclosed mode of production of most of many employings of iron wire factory, makes and produces the interference of having to be limited by weather and season; Sleety weather ability ordinary production, the workman does not receive severe cold winter.
2, no cyanogen, no pickling, recirculated water do not discharge, and have replaced the acid pickling step during galvanized wire tradition old law is produced, and have removed the perennial draingage operator scheme; Reduced working strength of workers; Improved workman's Working environment, reduced production cost of products, reduced pollution greatly environment.
3, water saving; Be provided with the pipeline of first cold water deposition circulation groove and second cold water deposition circulation groove and connection; Cold water behind sedimentation and filtration; Cold water part behind sedimentation and filtration can be made into saturated solution with zinc sulfate and return and be added to three zinc baths as replenishing liquid, and another part returns again to be added in the cold rinse bank and recycles; In whole process of production, only need respectively to inject 50 kilograms tap water every day and get final product to cold rinse bank and hot water tank; In whole galvanized wire production process, realized the recycle of water, compare water saving 98% with traditional technology, remove the pollution of waste water to environment, handle at precipitated impurities unified useless station of danger of delivering to after collecting, and produces 1 ton of galvanized wire and produce 0.3 kilogram of dried impurity.
4, adopt paying out machine to replace traditional draw drum, reduce working strength of workers, reduced workman's quantity, improved production efficiency, the security that has improved equipment with can be handling.
5, adopt polishing machine to iron wire automatically grinding, polishing, reach derust, dust separating purpose, replaced the acid pickling step of traditional salt soak; Improved workman's production environment; Reduced harm, removed the pollution of acid, reduced production cost environment to environment.
6, only need three zinc baths, changed traditional necessary four zinc baths, reduced production cost, reduced the floor space of production line.
| Title | Annual minimum consumption | Economic worth |
| Acid | 90 tons | 72000 yuan |
| Water | 15000 tons | 75000 yuan |
More than explanation is just illustrative as far as the utility model; And nonrestrictive, those of ordinary skills understand, under the situation of spirit that does not break away from claim and limited and scope; Can make many modifications, variation or equivalence, but all will fall within the protection domain of the utility model.
Claims (3)
1. clean environment firendly iron wire galvanizing rig; It is characterized in that: this iron wire galvanizing rig mainly comprises paying out machine (1), polishing machine (2), tank (3), first zinc bath (4), second zinc bath (5), the 3rd zinc bath (6), cold rinse bank (7), hot water tank (8) and wire coiler (9); Wherein: on paying out machine (1), polishing machine (2), tank (3), first zinc bath (4), second zinc bath (5), the 3rd zinc bath (6), cold rinse bank (7), hot water tank (8) and wire coiler (9), be provided with roller set; Roller set is made up of roller, roller shaft and bearing, and the iron wire of the iron wire of paying out machine (1) and wire coiler (9) joins end to end through each roller set, and iron wire is affected by wire coiler (9) and passes through paying out machine (1) successively to polishing machine (2); By the polishing material in the polishing machine (2) with iron wire surface finish, polishing; Remove rust stain dust or greasy dirt, clean the iron wire surface through tank (3) again, then; Adopt electroplate liquid to electroplate through first zinc bath (4), second zinc bath (5), the 3rd zinc bath (6); Iron wire after electroplating cleans the iron wire surface through cold rinse bank (7) and hot water tank (8), is twined by wire coiler (9) at last, goes round and begins again;
Wherein: this iron wire galvanizing rig also comprises two cold water deposition circulation grooves and pipeline, and promptly first cold water deposition circulation groove (12), second cold water precipitate circulation groove (13), the pipeline (7a) that first cold water deposition circulation groove (12) is communicated with cold rinse bank, the pipeline (12a) that first cold water deposition circulation groove (12) is communicated with second cold water deposition circulation groove (13), the pipeline (13a) that second cold water deposition circulation groove (13) is communicated with tank (3), first zinc bath (4), second zinc bath (5), the 3rd zinc bath (6);
Wherein: this iron wire galvanizing rig also comprises two hot water deposition circulation grooves and pipeline, and promptly first hot water deposition circulation groove (10), second hot water precipitate circulation groove (11), the pipeline (8a) that first hot water deposition circulation groove (10) is communicated with hot water tank (8), the pipeline (10a) that first hot water deposition circulation groove (10) is communicated with second hot water deposition circulation groove (11), the pipeline (11a) that second hot water deposition circulation groove (11) is communicated with cold rinse bank (7) and hot water tank (8).
2. clean environment firendly iron wire galvanizing rig according to claim 1 is characterized in that: described polishing material is 6 orders-120 purpose silit or brown corundum or white fused alumina or garnet.
3. clean environment firendly iron wire galvanizing rig according to claim 1 is characterized in that: described electroplate liquid is the zinc sulfate electroplate liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202123050U CN202107785U (en) | 2011-06-22 | 2011-06-22 | Clean and environment-friendly iron wire galvanizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202123050U CN202107785U (en) | 2011-06-22 | 2011-06-22 | Clean and environment-friendly iron wire galvanizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202107785U true CN202107785U (en) | 2012-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202123050U Expired - Fee Related CN202107785U (en) | 2011-06-22 | 2011-06-22 | Clean and environment-friendly iron wire galvanizing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202107785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242385A (en) * | 2011-06-22 | 2011-11-16 | 秦学刚 | Clean and environment-friendly iron wires galvanizing apparatus and its technology |
| CN109402370A (en) * | 2018-12-05 | 2019-03-01 | 马鞍山市剑群金属制品有限公司 | It is zinc-plated to substitute iron wire --- environmental protective metal absorbent coating New Process for Treatment |
-
2011
- 2011-06-22 CN CN2011202123050U patent/CN202107785U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102242385A (en) * | 2011-06-22 | 2011-11-16 | 秦学刚 | Clean and environment-friendly iron wires galvanizing apparatus and its technology |
| CN102242385B (en) * | 2011-06-22 | 2013-09-11 | 秦学刚 | Clean and environment-friendly iron wires galvanizing apparatus and technology thereof |
| CN109402370A (en) * | 2018-12-05 | 2019-03-01 | 马鞍山市剑群金属制品有限公司 | It is zinc-plated to substitute iron wire --- environmental protective metal absorbent coating New Process for Treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20120622 |