CN109797357A - A kind of fastener hot galvanizing method - Google Patents
A kind of fastener hot galvanizing method Download PDFInfo
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- CN109797357A CN109797357A CN201910106272.2A CN201910106272A CN109797357A CN 109797357 A CN109797357 A CN 109797357A CN 201910106272 A CN201910106272 A CN 201910106272A CN 109797357 A CN109797357 A CN 109797357A
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- fastener
- hot galvanizing
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- zinc
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Abstract
The invention discloses a kind of fastener hot galvanizing methods, including (1) to carry out cleaning by degreasing to fastener surface by NaOH aqueous solution；(2) fastener surface is washed by clear water；(3) room temperature cleaning is carried out to fastener surface by no phosphoric acid solution；(4) secondary washing is carried out to fastener surface by clear water；(5) room temperature cleaning is carried out to fastener surface by aqueous ammonium chloride solution；(6) fastener is dried；(7) fastener is put into electric ceramic zinc pot carry out it is zinc-plated；(8) fastener after hot galvanizing is put into a centrifuge into centrifugation；(9) hot galvanizing operation is completed after fastener is cooling.The present invention carries out the pretreatment such as cleaning by degreasing, washing, without phosphorus pickling, washing, ammonium chloride washed to fastener；Hot galvanizing operation and centrifugation are carried out to fastener.
Description
Technical field
The present invention relates to fastener areas more particularly to a kind of fastener hot galvanizing methods.
Background technique
Fastener plays the effects of connection, positioning and sealing in mechanical component, and wherein bolt dosage is maximum.With all kinds of
Machinery, equipment, the continuous enlargement of architectural engineering and the continuous improvement of power, revolving speed, the operating condition of bolt class part is more
Add badly, it is therefore desirable to which bolt steel have higher corrosion resistance.How by it is zinc-plated carry out corrosion resistance raising, one
The problem of being directly this field urgent need to resolve.
Summary of the invention
Goal of the invention: in view of the deficiencies of the prior art with defect, the present invention provide a kind of pair of fastener carry out cleaning by degreasing,
The pretreatment such as washing, without phosphorus pickling, washing, ammonium chloride washed；The fastener hot dip of hot galvanizing operation and centrifugation is carried out to fastener
Zinc method.
A kind of technical solution: fastener hot galvanizing method of the invention, it is characterised in that: include the following steps,
(1) cleaning by degreasing is carried out to fastener surface by NaOH aqueous solution, operation temperature is 60 DEG C~80 DEG C；
(2) fastener surface is washed by clear water；
(3) room temperature cleaning is carried out to fastener surface by no phosphoric acid solution；
(4) secondary washing is carried out to fastener surface by clear water；
(5) room temperature cleaning is carried out to fastener surface by aqueous ammonium chloride solution；
(6) fastener is dried, drying temperature is 60 DEG C~70 DEG C, and drying time is 8min~12min；
(7) fastener is put into electric ceramic zinc pot carry out it is zinc-plated, in galvanized pot solution temperature be 540 DEG C~560 DEG C,
Galvanizing time is 1.5min~2min, and Zinc Coating Thickness is 52 μm~55 μm；
(8) fastener after hot galvanizing is put into a centrifuge into centrifugation；
(9) hot galvanizing operation is completed after fastener is cooling.
Wherein, NaOH aqueous solution is primary every 16d~20d replacement in the step (1).
Wherein, clear water reuses in the step (2), and clear water is primary every 13d~16d replacement.
It wherein, is the mixed liquor of hydrochloric acid and sulfuric acid without phosphoric acid solution in the step (3).
Wherein, centrifuge is closed type centrifugal machine in the step (8), and centrifugation generates cadmia and recycles.
Wherein, the step (9) is cooled down by cooling water.
The utility model has the advantages that compared with prior art, the present invention has following remarkable advantage: fastener hot galvanizing side of the invention
Method carries out cleaning by degreasing, washing, without phosphorus pickling, washing, ammonium chloride washed to fastener, carries out sufficiently pre- place to fastener surface
Reason；Then hot galvanizing operation is carried out, zinc-plated more efficient, effect is more preferable；The operation of centrifugation is also convenient for keeping zinc layers more uniform.
Specific embodiment
Technical solution of the present invention is further described With reference to embodiment.
Embodiment 1: a kind of fastener hot galvanizing method of the present embodiment carries out fastener surface by NaOH aqueous solution
Cleaning by degreasing, operation temperature are 60 DEG C, and NaOH aqueous solution is primary every 16d replacement；Water is carried out to fastener surface by clear water
It washes, clear water recycling, clear water is primary every 13d replacement；Room temperature cleaning, nothing are carried out to fastener surface by no phosphoric acid solution
Phosphoric acid solution is the mixed liquor of hydrochloric acid and sulfuric acid；Secondary washing is carried out to fastener surface by clear water；Pass through ammonium chloride solution
Liquid carries out room temperature cleaning to fastener surface；Fastener is dried, drying temperature is 60 DEG C, drying time 8min；It will
Fastener be put into electric ceramic zinc pot carry out it is zinc-plated, in galvanized pot solution temperature be 540 DEG C, galvanizing time 1.5min, plating
Zinc is with a thickness of 52 μm；Fastener after hot galvanizing is put into a centrifuge into centrifugation, centrifuge is closed type centrifugal machine, and centrifugation generates
Cadmia recycles；Hot galvanizing operation is completed after fastener is cooling, is cooled down by cooling water.
Embodiment 2: a kind of fastener hot galvanizing method of the present embodiment carries out fastener surface by NaOH aqueous solution
Cleaning by degreasing, operation temperature are 80 DEG C, and NaOH aqueous solution is primary every 20d replacement；Water is carried out to fastener surface by clear water
It washes, clear water recycling, clear water is primary every 16d replacement；Room temperature cleaning, nothing are carried out to fastener surface by no phosphoric acid solution
Phosphoric acid solution is the mixed liquor of hydrochloric acid and sulfuric acid；Secondary washing is carried out to fastener surface by clear water；Pass through ammonium chloride solution
Liquid carries out room temperature cleaning to fastener surface；Fastener is dried, drying temperature is 70 DEG C, drying time 12min；It will
Fastener, which is put into electric ceramic zinc pot, to carry out zinc-plated, and solution temperature is 560 DEG C, galvanizing time 2min in galvanized pot, zinc-plated
With a thickness of 55 μm；Fastener after hot galvanizing is put into a centrifuge into centrifugation, centrifuge is closed type centrifugal machine, and centrifugation generates zinc
Slag recycles；Hot galvanizing operation is completed after fastener is cooling, is cooled down by cooling water.
Embodiment 3: a kind of fastener hot galvanizing method of the present embodiment carries out fastener surface by NaOH aqueous solution
Cleaning by degreasing, operation temperature are 70 DEG C, and NaOH aqueous solution is primary every 18d replacement；Water is carried out to fastener surface by clear water
It washes, clear water recycling, clear water is primary every 15d replacement；Room temperature cleaning, nothing are carried out to fastener surface by no phosphoric acid solution
Phosphoric acid solution is the mixed liquor of hydrochloric acid and sulfuric acid；Secondary washing is carried out to fastener surface by clear water；Pass through ammonium chloride solution
Liquid carries out room temperature cleaning to fastener surface；Fastener is dried, drying temperature is 65 DEG C, drying time 10min；It will
Fastener be put into electric ceramic zinc pot carry out it is zinc-plated, in galvanized pot solution temperature be 550 DEG C, galvanizing time 1.8min, plating
Zinc is with a thickness of 53 μm；Fastener after hot galvanizing is put into a centrifuge into centrifugation, centrifuge is closed type centrifugal machine, and centrifugation generates
Cadmia recycles；Hot galvanizing operation is completed after fastener is cooling, is cooled down by cooling water.
Embodiment 4: a kind of fastener hot galvanizing method of the present embodiment carries out fastener surface by NaOH aqueous solution
Cleaning by degreasing, operation temperature are 65 DEG C, and NaOH aqueous solution is primary every 17d replacement；Water is carried out to fastener surface by clear water
It washes, clear water recycling, clear water is primary every 14d replacement；Room temperature cleaning, nothing are carried out to fastener surface by no phosphoric acid solution
Phosphoric acid solution is the mixed liquor of hydrochloric acid and sulfuric acid；Secondary washing is carried out to fastener surface by clear water；Pass through ammonium chloride solution
Liquid carries out room temperature cleaning to fastener surface；Fastener is dried, drying temperature is 62 DEG C, drying time 9min；It will
Fastener be put into electric ceramic zinc pot carry out it is zinc-plated, in galvanized pot solution temperature be 545 DEG C, galvanizing time 1.6min, plating
Zinc is with a thickness of 53 μm；Fastener after hot galvanizing is put into a centrifuge into centrifugation, centrifuge is closed type centrifugal machine, and centrifugation generates
Cadmia recycles；Hot galvanizing operation is completed after fastener is cooling, is cooled down by cooling water.
Embodiment 5: a kind of fastener hot galvanizing method of the present embodiment carries out fastener surface by NaOH aqueous solution
Cleaning by degreasing, operation temperature are 75 DEG C, and NaOH aqueous solution is primary every 19d replacement；Water is carried out to fastener surface by clear water
It washes, clear water recycling, clear water is primary every 15d replacement；Room temperature cleaning, nothing are carried out to fastener surface by no phosphoric acid solution
Phosphoric acid solution is the mixed liquor of hydrochloric acid and sulfuric acid；Secondary washing is carried out to fastener surface by clear water；Pass through ammonium chloride solution
Liquid carries out room temperature cleaning to fastener surface；Fastener is dried, drying temperature is 68 DEG C, drying time 11min；It will
Fastener be put into electric ceramic zinc pot carry out it is zinc-plated, in galvanized pot solution temperature be 558 DEG C, galvanizing time 1.9min, plating
Zinc is with a thickness of 54 μm；Fastener after hot galvanizing is put into a centrifuge into centrifugation, centrifuge is closed type centrifugal machine, and centrifugation generates
Cadmia recycles；Hot galvanizing operation is completed after fastener is cooling, is cooled down by cooling water.
Claims (6)
1. a kind of fastener hot galvanizing method, it is characterised in that: include the following steps,
(1) cleaning by degreasing is carried out to fastener surface by NaOH aqueous solution, operation temperature is 60 DEG C~80 DEG C；
(2) fastener surface is washed by clear water；
(3) room temperature cleaning is carried out to fastener surface by no phosphoric acid solution；
(4) secondary washing is carried out to fastener surface by clear water；
(5) room temperature cleaning is carried out to fastener surface by aqueous ammonium chloride solution；
(6) fastener is dried, drying temperature is 60 DEG C~70 DEG C, and drying time is 8min~12min；
(7) fastener is put into electric ceramic zinc pot carry out it is zinc-plated, in galvanized pot solution temperature be 540 DEG C~560 DEG C, it is zinc-plated
Time is 1.5min~2min, and Zinc Coating Thickness is 52 μm~55 μm；
(8) fastener after hot galvanizing is put into a centrifuge into centrifugation；
(9) hot galvanizing operation is completed after fastener is cooling.
2. a kind of fastener hot galvanizing method according to claim 1, it is characterised in that: NaOH in the step (1)
Aqueous solution is primary every 16d~20d replacement.
3. a kind of fastener hot galvanizing method according to claim 1, it is characterised in that: clear water in the step (2)
Recycling, clear water are primary every 13d~16d replacement.
4. a kind of fastener hot galvanizing method according to claim 1, it is characterised in that: without phosphorus in the step (3)
Acid solution is the mixed liquor of hydrochloric acid and sulfuric acid.
5. a kind of fastener hot galvanizing method according to claim 1, it is characterised in that: centrifugation in the step (8)
Machine is closed type centrifugal machine, and centrifugation generates cadmia and recycles.
6. a kind of fastener hot galvanizing method according to claim 1, it is characterised in that: the step (9) passes through cold
But water is cooled down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910106272.2A CN109797357A (en) | 2019-02-02 | 2019-02-02 | A kind of fastener hot galvanizing method |
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| CN201910106272.2A CN109797357A (en) | 2019-02-02 | 2019-02-02 | A kind of fastener hot galvanizing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923762A (en) * | 2019-12-11 | 2020-03-27 | 倪立秧 | Surface galvanizing treatment process for fastener |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368253A (en) * | 2008-10-16 | 2009-02-18 | 陈冬 | Automatic hot galvanizing technique for steel fastener |
| CN102816985A (en) * | 2012-07-21 | 2012-12-12 | 靖江市大通标准件厂 | Processing method for hot dip galvanizing |
| CN102994926A (en) * | 2012-12-20 | 2013-03-27 | 常熟市保得利电力通讯设备有限公司 | Hot dip galvanizing process method |
| CN108149179A (en) * | 2017-12-15 | 2018-06-12 | 徐州瑞马智能技术有限公司 | A kind of fastener hot dip galvanizing production process |
-
2019
- 2019-02-02 CN CN201910106272.2A patent/CN109797357A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368253A (en) * | 2008-10-16 | 2009-02-18 | 陈冬 | Automatic hot galvanizing technique for steel fastener |
| CN102816985A (en) * | 2012-07-21 | 2012-12-12 | 靖江市大通标准件厂 | Processing method for hot dip galvanizing |
| CN102994926A (en) * | 2012-12-20 | 2013-03-27 | 常熟市保得利电力通讯设备有限公司 | Hot dip galvanizing process method |
| CN108149179A (en) * | 2017-12-15 | 2018-06-12 | 徐州瑞马智能技术有限公司 | A kind of fastener hot dip galvanizing production process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923762A (en) * | 2019-12-11 | 2020-03-27 | 倪立秧 | Surface galvanizing treatment process for fastener |
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