CN101984129A - Galvanizing technology for high-strength fastening piece - Google Patents
Galvanizing technology for high-strength fastening piece Download PDFInfo
- Publication number
- CN101984129A CN101984129A CN 201010510047 CN201010510047A CN101984129A CN 101984129 A CN101984129 A CN 101984129A CN 201010510047 CN201010510047 CN 201010510047 CN 201010510047 A CN201010510047 A CN 201010510047A CN 101984129 A CN101984129 A CN 101984129A
- Authority
- CN
- China
- Prior art keywords
- hot dip
- high strength
- strength bolt
- zinc
- dip galvanizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Coating With Molten Metal (AREA)
Abstract
The invention relates to a galvanizing technology for high-strength fastening pieces. The technology consists of oil removing process, surface pre-treatment process, passivation process, hot-dip zinc process, centrifugation process and cooling process successively. In hot-dip zinc process, high-strength fastening pieces are subject to passivation treatment and then are immersed in zinc liquid at a temperature of 470-480 DEG C. for 40-60 seconds. After being treated with the galvanizing technology, zinc layer thickness of high-strength fastening pieces can meet the corresponding standard and surface hardness and strength thereof will not change basically.
Description
Technical field
The present invention relates to a kind of with the molten state clad material and do not influence the or immersion of shape, particularly a kind of hot dip galvanizing process of high-intensity fasteners.
Background technology
Pot galvanize (galvanizing) also be galvanizing and galvanizing, is that the steel-iron components after a kind of will the rust cleaning immerses in the zinc liquid that melts, and makes the art treatment of steel-iron components surface attachment zinc layer.The coating of pot galvanize and the bonding force of iron and steel are strong, and coating has the galvanic protection effect to iron and steel, can prolong part work-ing life significantly.Thereby the pot galvanize technology is widely used in the surface anticorrosion processing of iron and steel fastening piece.The hot dip galvanizing process of fastening pieces such as bolt, nut comprises successively at present: oil removing operation, surperficial pretreatment procedure, passivation procedure, galvanizing operation, rotary process, refrigerating work procedure.Wherein, in the galvanizing operation, zinc liquid temperature is usually above 520 ℃.The surface hardness of galvanized iron and steel fastening piece and intensity can reduce significantly under this processing condition.With the high strength bolt that is used on the aerogenerator is example, zinc-plated before, the list of bolts surface hardness is about 320HV, tensile strength is 1060-1140N/mm
2, zinc-plated after, thickness of coating is 60-80 μ m, the list of bolts surface hardness is about 280HV, tensile strength is 910-980N/mm
2
Summary of the invention
Technical problem to be solved by this invention provides a kind of hot dip galvanizing process that keeps the high-intensity fasteners of iron and steel fastener surface hardness and intensity.
The hot dip galvanizing process of high-intensity fasteners of the present invention comprises oil removing operation, surperficial pretreatment procedure, passivation procedure, galvanizing operation, rotary process, refrigerating work procedure successively, and described galvanizing operation is soaked 40-60 second for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 470-480 ℃.
The hot dip galvanizing process of high-intensity fasteners of the present invention, wherein, described surperficial pretreatment procedure carries out Shot Blasting for the shot with diameter 0.2mm to the high-intensity fasteners surface after cleaning, ball blast distance: 0.2-0.5m, spray angle: the 45-80 degree, compressed air pressure is: 0.4-0.6mpa.
The hot dip galvanizing process of high-intensity fasteners of the present invention, wherein, described galvanizing operation was soaked 40 seconds for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 470 ℃.
The hot dip galvanizing process of high-intensity fasteners of the present invention, wherein, described galvanizing operation was soaked 60 seconds for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 475 ℃.
The hot dip galvanizing process of high-intensity fasteners of the present invention, wherein, described galvanizing operation was soaked 50 seconds for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 480 ℃.
After high-intensity fasteners handled by hot dip galvanizing process of the present invention, when guaranteeing that zinc coating thickness requires, its surface hardness and intensity did not change substantially.
Adopt ball blast to replace traditional pickling in the hot dip galvanizing process of high-intensity fasteners of the present invention, avoided the generation of product hydrogen embrittlement phenomenon, pass through the high strength bolt of ball blast simultaneously, skin friction coefficient is bigger, high strength bolt sticking power in soaking the zinc process is better, coating is more firm, thereby makes that the antiseptic power of product is better.
Embodiment
The hot dip galvanizing process of high-intensity fasteners of the present invention is seen following examples.
Embodiment one, the hot dip galvanizing process of high-intensity fasteners of the present invention:
1, alkaline degreasing operation: the basic solution of high strength bolt being put into PH=10 cleans, the basic solution temperature: 70 ℃, and solution quality percentage concentration: 15%;
2, matting: the neutral solution of the high strength bolt behind the alkaline degreasing being put into PH=7 is cleaned, cleaning temperature: room temperature;
3, ball blast operation: the shot with diameter 0.2mm carries out Shot Blasting to the high strength bolt surface after cleaning, ball blast distance: 0.2m, and spray angle: 45 degree, compressed air pressure is: 0.4mpa;
4, passivation procedure: the ammonium chloride solution of the high strength bolt after the Shot Blasting being put into PH=7 cleans, the basic solution temperature: 100 ℃, and ammonium chloride solution mass percent concentration: 20%;
5, soak the zinc operation: the zinc liquid of the high strength bolt after the Passivation Treatment being put into 470 ℃ soaked for 40 seconds;
6, rotary process: will soaking high strength bolt behind the core, to put into whizzer centrifugal, rotating speed: 560 rev/mins, and the time: 30 seconds;
7, refrigerating work procedure: obtain the high strength bolt that thickness of coating is 60 μ m after the high strength bolt after centrifugal put into the cooling of 10 ℃ of clear water.
Show through detecting: before zinc-plated, the high strength bolt surface hardness is 320HV, and tensile strength is 1060N/mm
2, be 310HV through the surface hardness of the high strength bolt after the hot dip galvanizing process processing of the present invention, tensile strength is 1050N/mm
2
Surperficial pretreatment procedure in the hot dip galvanizing process of the present invention adopts ball blast to replace traditional pickling, avoided the generation of product hydrogen embrittlement phenomenon, pass through the high strength bolt of ball blast simultaneously, skin friction coefficient is bigger, high strength bolt sticking power in soaking the zinc process is better, coating is more firm, thereby makes that the antiseptic power of product is better.
Embodiment two, the hot dip galvanizing process of high-intensity fasteners of the present invention:
1, alkaline degreasing operation: the basic solution of high strength bolt being put into PH=12 cleans, the basic solution temperature: 85 ℃, and solution quality percentage concentration: 20%;
2, matting: the neutral solution of the high strength bolt behind the alkaline degreasing being put into PH=7.5 is cleaned, cleaning temperature: room temperature;
3, ball blast operation: the shot with diameter 0.2mm carries out Shot Blasting to the high strength bolt surface after cleaning, ball blast distance: 0.5m, and spray angle: 80 degree, compressed air pressure is: 0.6mpa;
4, passivation procedure: the ammonium chloride solution of the high strength bolt after the Shot Blasting being put into PH=7.5 cleans, the basic solution temperature: 90 ℃, and ammonium chloride solution mass percent concentration: 30%;
5, soak the zinc operation: the zinc liquid of the high strength bolt after the Passivation Treatment being put into 480 ℃ soaked for 50 seconds;
6, rotary process: will soaking high strength bolt behind the zinc, to put into whizzer centrifugal, rotating speed: 560 rev/mins, and the time: 50 seconds;
7, refrigerating work procedure: the high strength bolt after centrifugal put into to obtain thickness of coating after the cooling of 25 ℃ of clear water be 80 μ m high strength bolts.
Show through detecting: before zinc-plated, the high strength bolt surface hardness is 310HV, and tensile strength is 1140N/mm
2, be 310HV through the surface hardness of the high strength bolt after the hot dip galvanizing process processing of the present invention, tensile strength is 1120N/mm
2
Surperficial pretreatment procedure in the hot dip galvanizing process of the present invention adopts ball blast to replace traditional pickling, avoided the generation of product hydrogen embrittlement phenomenon, pass through the high strength bolt of ball blast simultaneously, skin friction coefficient is bigger, high strength bolt sticking power in soaking the zinc process is better, coating is more firm, thereby makes that the antiseptic power of product is better.
Embodiment three, a kind of manufacture method of plunger body of the present invention:
1, alkaline degreasing operation: the basic solution of high strength bolt being put into PH=11 cleans, the basic solution temperature: 80 ℃, and solution quality percentage concentration: 20%;
2, matting: the neutral solution of the high strength bolt behind the alkaline degreasing being put into PH=7 is cleaned, cleaning temperature: room temperature;
3, ball blast operation: the shot with diameter 0.2mm carries out Shot Blasting to the high strength bolt surface after cleaning, ball blast distance: 0.4m, and spray angle: 60 degree, compressed air pressure is: 0.5mpa;
4, passivation procedure: the ammonium chloride solution of the high strength bolt after the Shot Blasting being put into PH=7 cleans, the basic solution temperature: 100 ℃, and ammonium chloride solution mass percent concentration: 25%;
5, soak the zinc operation: the zinc liquid of the high strength bolt after the Passivation Treatment being put into 475 ℃ soaked for 60 seconds;
6, rotary process: will soaking high strength bolt behind the core, to put into whizzer centrifugal, rotating speed: 560 rev/mins, and the time: 40 seconds;
7, refrigerating work procedure: the high strength bolt after centrifugal put into to obtain thickness of coating after the cooling of 20 ℃ of clear water be 70 μ m high strength bolts.
Show through detecting: before zinc-plated, the high strength bolt surface hardness is 330HV, and tensile strength is 1100N/mm
2, be 330HV through the surface hardness of the high strength bolt after the hot dip galvanizing process processing of the present invention, tensile strength is 1080N/mm
2
Surperficial pretreatment procedure in the hot dip galvanizing process of the present invention adopts ball blast to replace traditional pickling, avoided the generation of product hydrogen embrittlement phenomenon, pass through the high strength bolt of ball blast simultaneously, skin friction coefficient is bigger, high strength bolt sticking power in soaking the zinc process is better, coating is more firm, thereby makes that the antiseptic power of product is better.
The above embodiment only is that preferred implementation of the present invention is described; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. the hot dip galvanizing process of a high-intensity fasteners, comprise oil removing operation, surperficial pretreatment procedure, passivation procedure, galvanizing operation, rotary process, refrigerating work procedure successively, it is characterized in that described galvanizing operation is soaked 40-60 second for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 470-480 ℃.
2. hot dip galvanizing process according to claim 1, it is characterized in that, described surperficial pretreatment procedure carries out Shot Blasting for the shot with diameter 0.2mm to the high-intensity fasteners surface after cleaning, ball blast distance: 0.2-0.5m, spray angle: the 45-80 degree, compressed air pressure is: 0.4-0.6mpa.
3. hot dip galvanizing process according to claim 2 is characterized in that, described galvanizing operation was soaked 40 seconds for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 470 ℃.
4. hot dip galvanizing process according to claim 2 is characterized in that, described galvanizing operation was soaked 60 seconds for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 475 ℃.
5. hot dip galvanizing process according to claim 2 is characterized in that, described galvanizing operation was soaked 50 seconds for the zinc liquid of the high-intensity fasteners after the Passivation Treatment being put into 480 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010510047 CN101984129A (en) | 2010-10-15 | 2010-10-15 | Galvanizing technology for high-strength fastening piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010510047 CN101984129A (en) | 2010-10-15 | 2010-10-15 | Galvanizing technology for high-strength fastening piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101984129A true CN101984129A (en) | 2011-03-09 |
Family
ID=43641299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010510047 Pending CN101984129A (en) | 2010-10-15 | 2010-10-15 | Galvanizing technology for high-strength fastening piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101984129A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222596A (en) * | 2016-08-31 | 2016-12-14 | 浙江海力股份有限公司 | A kind of environment-friendly type galvanizing by dipping no acidwashing craft |
| CN106498325A (en) * | 2016-11-28 | 2017-03-15 | 桐庐海王紧固件有限公司 | Electric power securing member galvanizing by dipping no acidwashing craft |
| CN108893729A (en) * | 2018-07-24 | 2018-11-27 | 浙江裕泰汽车配件有限公司 | A kind of fastener surface treatment process |
| CN110923762A (en) * | 2019-12-11 | 2020-03-27 | 倪立秧 | Surface galvanizing treatment process for fastener |
| CN113211325A (en) * | 2021-05-07 | 2021-08-06 | 包头市威丰稀土电磁材料股份有限公司 | Method for preparing non-bottom-layer raw material of oriented silicon steel thin strip in physical sand blasting mode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1018013A (en) * | 1996-06-28 | 1998-01-20 | Nippon Steel Corp | Production of aluminum-zinc plated steel sheet excellent in external surface appearance, and the aluminum-zinc plated steel sheet |
| CN1229821A (en) * | 1999-02-09 | 1999-09-29 | 王璐 | Zinc base water soluble anti-corrosion paint for metal surface and its prepn. method |
| CN101368253A (en) * | 2008-10-16 | 2009-02-18 | 陈冬 | Automatic hot galvanizing technique for steel fastener |
| CN101773901A (en) * | 2009-12-09 | 2010-07-14 | 海洋王照明科技股份有限公司 | Method for improving property of dacromet coating on surface of metal member |
-
2010
- 2010-10-15 CN CN 201010510047 patent/CN101984129A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1018013A (en) * | 1996-06-28 | 1998-01-20 | Nippon Steel Corp | Production of aluminum-zinc plated steel sheet excellent in external surface appearance, and the aluminum-zinc plated steel sheet |
| CN1229821A (en) * | 1999-02-09 | 1999-09-29 | 王璐 | Zinc base water soluble anti-corrosion paint for metal surface and its prepn. method |
| CN101368253A (en) * | 2008-10-16 | 2009-02-18 | 陈冬 | Automatic hot galvanizing technique for steel fastener |
| CN101773901A (en) * | 2009-12-09 | 2010-07-14 | 海洋王照明科技股份有限公司 | Method for improving property of dacromet coating on surface of metal member |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222596A (en) * | 2016-08-31 | 2016-12-14 | 浙江海力股份有限公司 | A kind of environment-friendly type galvanizing by dipping no acidwashing craft |
| CN106498325A (en) * | 2016-11-28 | 2017-03-15 | 桐庐海王紧固件有限公司 | Electric power securing member galvanizing by dipping no acidwashing craft |
| CN108893729A (en) * | 2018-07-24 | 2018-11-27 | 浙江裕泰汽车配件有限公司 | A kind of fastener surface treatment process |
| CN110923762A (en) * | 2019-12-11 | 2020-03-27 | 倪立秧 | Surface galvanizing treatment process for fastener |
| CN113211325A (en) * | 2021-05-07 | 2021-08-06 | 包头市威丰稀土电磁材料股份有限公司 | Method for preparing non-bottom-layer raw material of oriented silicon steel thin strip in physical sand blasting mode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105817839B (en) | A kind of technological process of production of zinc steel guard rail | |
| CN101984129A (en) | Galvanizing technology for high-strength fastening piece | |
| CN105543775B (en) | A kind of fast powder zincizing agent and its application method | |
| CN101665895B (en) | Composite method of plating steel by hot dipping | |
| CN101724801B (en) | Comprehensive anticorrosive method of metal pipe fitting | |
| CN102776458A (en) | Single-side galvanizing method for producing hot-dip galvanized steel pipe | |
| CN101386971A (en) | Corrosion proof treatment method of anchor chain | |
| CN109852914A (en) | A kind of high-strength alloyed steel plate hot dip galvanizing process | |
| CN106078525A (en) | Large-scale galvanizing surface of the work Pretreatment Technology Before Finishing | |
| CN106222596A (en) | A kind of environment-friendly type galvanizing by dipping no acidwashing craft | |
| CN101692382A (en) | Hydrogen removing method for radiator for transformer | |
| JP2008031519A (en) | Hot-dip galvanizing method and galvanized article | |
| CN103668236A (en) | Stamping part surface treatment method before coating | |
| CN104593764A (en) | Steel surface phosphatizing technology | |
| CN103031504A (en) | Mechanical zinc plating corrosion resisting process by nanotechnology | |
| CN105648378A (en) | Antirust heat treatment technology for spare parts | |
| CN106048515A (en) | Surface treatment method for metal component | |
| JP7107327B2 (en) | Press-molded product manufacturing method and press-molded product | |
| CN105568282A (en) | Carbon steel surface treatment method | |
| CN103266326A (en) | Wire rope pickling method | |
| CN104404441A (en) | Preparation method for copper-plated steel band | |
| Zhu et al. | Investigation on the adhesion improvement of organic coatings on the surface of hot-dip galvanized steel | |
| CN115198260A (en) | Method for improving corrosion resistance of neodymium iron boron magnet | |
| CN107502126A (en) | A kind of surface treatment method of sewage water inspection well lid | |
| CN107513736A (en) | The processing method of metal substrate in a kind of rubber-metal composite sealing pad |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110309 |