CN102888577A - Process for manufacturing zinc, magnesium and aluminum ternary alloy steel pipe by continuously hot-dip plating - Google Patents
Process for manufacturing zinc, magnesium and aluminum ternary alloy steel pipe by continuously hot-dip plating Download PDFInfo
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- CN102888577A CN102888577A CN2012102492603A CN201210249260A CN102888577A CN 102888577 A CN102888577 A CN 102888577A CN 2012102492603 A CN2012102492603 A CN 2012102492603A CN 201210249260 A CN201210249260 A CN 201210249260A CN 102888577 A CN102888577 A CN 102888577A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention relates to a process for manufacturing a zinc, magnesium and aluminum ternary alloy pipe by continuous hot-dip plating. The process comprises the following steps of: 1, removing oil on the surface of a steel pipe; 2, performing thermal treatment on the steel pipe through a high-frequency induction device; 3, secondarily heating on the steel pipe; 4, soaking the steel pipe into a mixed melting solution of zinc, magnesium and aluminum ternary alloy for dip plating to form a plating layer; and 5, cooling the steel pipe by using clean water and drying. By the process, a technology of continuously annealing the precision steel pipe through high-frequency induction and a technology of continuously performing hot-dip plating on the precision steel pipe are combined to form a novel technology; and aims of improving the yield, reducing the energy consumption, improving the production efficiency and reducing the cost are fulfilled.
Description
Technical field
The present invention relates to a kind of immersion plating technology, especially a kind of continuous hot-dipping galvanizing magnalium P Ternary Alloy.
Background technology
Domestic production refrigerator hot galvanized steel pipe, the general employing eliminated rust to steel tube surface first, and annealing enters zinc melting pot to its laser heating behind the off-line more again, and the method for zinc layer is produced hot dip galvanizing pipe on the outer surface of steel tube hot melt.This technique exists technique loaded down with trivial details, and energy consumption is large, and yield rate is low, produces the defectives such as the line floor space is large, and for example: what plate in the traditional technology is zinc, and this erosion resistance to steel pipe has certain influence; Effects on surface rust cleaning step has increased the use of subsidiary material in the traditional technology, has increased the pollution that produces in the production process.
Summary of the invention
The technical problem to be solved in the present invention is: propose a kind of continuous hot-dipping galvanizing magnalium P Ternary Alloy, with precision tube high-frequency induction continuous annealing technology, with reasonable organic serial connection of precision tube continuous hot-dipping technology two techniques, form a kind of novel process; Reach the purpose of improving the quality of products, reducing energy consumption, enhance productivity, reduce cost.
The technical solution adopted in the present invention is: a kind of continuous hot-dipping galvanizing magnalium P Ternary Alloy may further comprise the steps:
1) steel pipe is carried out the surface degreasing clean;
2) steel pipe is heat-treated through the high-frequency induction device;
3) steel pipe is carried out second-heating;
4) steel pipe is immersed immersion plating in the mixed melting liquid of zinc-magnesium-aluminium ternary alloy, form coating;
5) clear water cooling pipe, oven dry.
Step 2 of the present invention) heat treatment mode in is: steel pipe in the high-frequency induction device through three groups of induction coils progressively be heated to annealing temperature, namely steel pipe is higher than initial temperature through first group of induction coil surface temperature and gets final product; Steel pipe through second group of induction coil surface temperature near annealing temperature; Steel pipe reaches annealing temperature through the 3rd group of induction coil surface temperature, and this moment, the annealing heating state finished; Described induction coil wraps up steel pipe wherein after wrapping up by silica tube again, the logical exchange current of induction coil produces alternating magnetic field, the electromagnetic induction effect of alternating magnetic field makes the induced current that produces sealing in the steel pipe, i.e. eddy current, and the electric energy of steel pipe top layer density electric current changes heat energy into steel pipe is heated.
The second-heating mode is in the step 3) of the present invention: with the high-frequency induction device steel pipe after annealing is heated equally.
The mixed melting liquid of zinc-magnesium-aluminium ternary alloy melts gained by the zinc-magnesium-aluminium ternary alloy in the step 4) of the present invention under 500 ℃ of temperature, and the mass percent of each element of alloy is: zinc: 40% ~ 45%, and magnesium: 30% ~ 35%, aluminium: 20% ~ 25%; Described steel pipe progressively immerses in the alloy solution along the speed of steel pipe axial direction due by 80 ~ 120m/min, leaves solution face place at steel pipe and installs and to blow the solution air knife, with the unnecessary alloy solution of the steel tube surface steel pipe that blows off, forms coating in steel tube surface.
Principle of the present invention is: with continuous induction annealing and the reasonable organic serial connection of continuous hot galvanizing two techniques, in reducing atmosphere to the continuous induction annealing of steel pipe, take full advantage of the waste heat behind the steel tube anneal, adopt again high-frequency induction to steel pipe supplementary heating degree, steel pipe is immersed plate preservative coat in the alloy solution again.
The invention has the beneficial effects as follows: the galvanizing magnalium ternary alloy steel pipe of this explained hereafter, strong than the zinc-plated production technique erosion resistance of traditional electrical, can reach the decades of times of present plated item, expanded its range of application, and greatly prolonged its work-ing life, can guarantee the postorder product safety, use reliably;
This technique is compared traditional electrical galvanizing continuous depositing process and be need not to carry out surface derusting, has saved the use of subsidiary material, has reduced the pollution that produces in the production process;
In the traditional electrical galvanizing continuous depositing process, need in front one production link, to carry out steel tube anneal and process.And this technique includes heat processing section, carries out anneal of material and process after surface treatment, with softening steel pipe through cold drawn afterwards hardening, has saved manually, has saved the time;
What this technique heat processing section adopted is the processing mode of high-frequency induction heating, has improved efficiency of energy utilization.Simultaneously, the product surface quality of producing under this technique is high, and the mechanical property homogeneity is high, has improved quality product.
Embodiment
The present invention is further detailed explanation in conjunction with the embodiments now.
Embodiment 1
A kind of continuous hot-dipping galvanizing magnalium P Ternary Alloy may further comprise the steps:
1) steel pipe is carried out the surface degreasing clean; Degreaser is degreaser common in the prior art, does not elaborate herein;
2) steel pipe is heat-treated through the high-frequency induction device; Steel pipe in the high-frequency induction device through three groups of induction coils progressively be heated to annealing temperature, namely steel pipe is higher than initial temperature through first group of induction coil surface temperature and gets final product; Steel pipe through second group of induction coil surface temperature near annealing temperature; Steel pipe reaches annealing temperature through the 3rd group of induction coil surface temperature, and this moment, the annealing heating state finished; Again with the steel pipe parcel wherein, the purpose that adopts the silica tube parcel was because silica tube is high temperature resistant and transparent, observes easily the heating state of steel pipe after induction coil wrapped up by silica tube.The logical exchange current of induction coil produces alternating magnetic field, and the electromagnetic induction effect of alternating magnetic field makes the induced current that produces sealing in the steel pipe, i.e. eddy current, and the electric energy of steel pipe top layer density electric current changes heat energy into steel pipe is heated.High-frequency induction device herein is for becoming the common industrial-frequency alternating current of 50Hz the big-power transducer of tens to hundreds of hertz high-frequency alternating current, and it comprises controlled rectifier, electron tube concussion and pilot circuit three parts, is electrically connected between the each several part.
3) steel pipe is carried out second-heating with the high-frequency induction device to the steel pipe after annealing equally;
4) steel pipe is immersed immersion plating in the mixed melting liquid of zinc-magnesium-aluminium ternary alloy, form coating; The mixed melting liquid of zinc-magnesium-aluminium ternary alloy melts gained by the zinc-magnesium-aluminium ternary alloy under 500 ℃ of temperature, the mass percent of each element of alloy is: zinc: 40%, and magnesium: 30%, aluminium: 30%; Steel pipe progressively immerses in the alloy solution along the speed of steel pipe axial direction due by 80m/min, leaves solution face place at steel pipe and installs and to blow the solution air knife, with the unnecessary alloy solution of the steel tube surface steel pipe that blows off, forms coating in steel tube surface.
5) clear water cooling pipe, oven dry.
Embodiment 2
A kind of continuous hot-dipping galvanizing magnalium P Ternary Alloy may further comprise the steps:
1) steel pipe is carried out the surface degreasing clean; Degreaser is degreaser common in the prior art, does not elaborate herein;
2) steel pipe is heat-treated through the high-frequency induction device; Steel pipe in the high-frequency induction device through three groups of induction coils progressively be heated to annealing temperature, namely steel pipe is higher than initial temperature through first group of induction coil surface temperature and gets final product; Steel pipe through second group of induction coil surface temperature near annealing temperature; Steel pipe reaches annealing temperature through the 3rd group of induction coil surface temperature, and this moment, the annealing heating state finished; Again with the steel pipe parcel wherein, the purpose that adopts the silica tube parcel was because silica tube is high temperature resistant and transparent, observes easily the heating state of steel pipe after induction coil wrapped up by silica tube.The logical exchange current of induction coil produces alternating magnetic field, and the electromagnetic induction effect of alternating magnetic field makes the induced current that produces sealing in the steel pipe, i.e. eddy current, and the electric energy of steel pipe top layer density electric current changes heat energy into steel pipe is heated.High-frequency induction device herein is for becoming the common industrial-frequency alternating current of 50Hz the big-power transducer of tens to hundreds of hertz high-frequency alternating current, and it comprises controlled rectifier, electron tube concussion and pilot circuit three parts, is electrically connected between the each several part.
3) steel pipe is carried out second-heating with the high-frequency induction device to the steel pipe after annealing equally;
4) steel pipe is immersed immersion plating in the mixed melting liquid of zinc-magnesium-aluminium ternary alloy, form coating; The mixed melting liquid of zinc-magnesium-aluminium ternary alloy melts gained by the zinc-magnesium-aluminium ternary alloy under 500 ℃ of temperature, the mass percent of each element of alloy is: zinc: 45%, and magnesium: 35%, aluminium: 20%; Steel pipe progressively immerses in the alloy solution along the speed of steel pipe axial direction due by 120m/min, leaves solution face place at steel pipe and installs and to blow the solution air knife, with the unnecessary alloy solution of the steel tube surface steel pipe that blows off, forms coating in steel tube surface.
5) clear water cooling pipe, oven dry.
Embodiment 3
A kind of continuous hot-dipping galvanizing magnalium P Ternary Alloy may further comprise the steps:
1) steel pipe is carried out the surface degreasing clean; Degreaser is degreaser common in the prior art, does not elaborate herein;
2) steel pipe is heat-treated through the high-frequency induction device; Steel pipe in the high-frequency induction device through three groups of induction coils progressively be heated to annealing temperature, namely steel pipe is higher than initial temperature through first group of induction coil surface temperature and gets final product; Steel pipe through second group of induction coil surface temperature near annealing temperature; Steel pipe reaches annealing temperature through the 3rd group of induction coil surface temperature, and this moment, the annealing heating state finished; Again with the steel pipe parcel wherein, the purpose that adopts the silica tube parcel was because silica tube is high temperature resistant and transparent, observes easily the heating state of steel pipe after induction coil wrapped up by silica tube.The logical exchange current of induction coil produces alternating magnetic field, and the electromagnetic induction effect of alternating magnetic field makes the induced current that produces sealing in the steel pipe, i.e. eddy current, and the electric energy of steel pipe top layer density electric current changes heat energy into steel pipe is heated.High-frequency induction device herein is for becoming the common industrial-frequency alternating current of 50Hz the big-power transducer of tens to hundreds of hertz high-frequency alternating current, and it comprises controlled rectifier, electron tube concussion and pilot circuit three parts, is electrically connected between the each several part.
3) steel pipe is carried out second-heating with the high-frequency induction device to the steel pipe after annealing equally;
4) steel pipe is immersed immersion plating in the mixed melting liquid of zinc-magnesium-aluminium ternary alloy, form coating; The mixed melting liquid of zinc-magnesium-aluminium ternary alloy melts gained by the zinc-magnesium-aluminium ternary alloy under 500 ℃ of temperature, the mass percent of each element of alloy is: zinc: 42%, and magnesium: 33%, aluminium: 25%; Steel pipe progressively immerses in the alloy solution along the speed of steel pipe axial direction due by 80m/min, leaves solution face place at steel pipe and installs and to blow the solution air knife, with the unnecessary alloy solution of the steel tube surface steel pipe that blows off, forms coating in steel tube surface.
5) clear water cooling pipe, oven dry.
Just the specific embodiment of the present invention of describing in the above specification sheets, various not illustrating is construed as limiting flesh and blood of the present invention, the person of an ordinary skill in the technical field after having read specification sheets can to before described embodiment make an amendment or be out of shape, and do not deviate from essence of an invention and scope.
Claims (4)
1. continuous hot-dipping galvanizing magnalium P Ternary Alloy is characterized in that may further comprise the steps:
1) steel pipe is carried out the surface degreasing clean;
2) steel pipe is heat-treated through the high-frequency induction device;
3) steel pipe is carried out second-heating;
4) steel pipe is immersed immersion plating in the mixed melting liquid of zinc-magnesium-aluminium ternary alloy, form coating;
5) clear water cooling pipe, oven dry.
2. continuous hot-dipping galvanizing magnalium P Ternary Alloy as claimed in claim 1, it is characterized in that: the heat treatment mode described step 2) is: steel pipe in the high-frequency induction device through three groups of induction coils progressively be heated to annealing temperature, namely steel pipe is higher than initial temperature through first group of induction coil surface temperature and gets final product; Steel pipe through second group of induction coil surface temperature near annealing temperature; Steel pipe reaches annealing temperature through the 3rd group of induction coil surface temperature, and this moment, the annealing heating state finished; Described induction coil wraps up steel pipe wherein after wrapping up by silica tube again, the logical exchange current of induction coil produces alternating magnetic field, the electromagnetic induction effect of alternating magnetic field makes the induced current that produces sealing in the steel pipe, i.e. eddy current, and the electric energy of steel pipe top layer density electric current changes heat energy into steel pipe is heated.
3. continuous hot-dipping galvanizing magnalium P Ternary Alloy as claimed in claim 1, it is characterized in that: the second-heating mode is in the described step 3): heat with the steel pipe of high-frequency induction device after to annealing equally.
4. continuous hot-dipping galvanizing magnalium P Ternary Alloy as claimed in claim 1, it is characterized in that: the mixed melting liquid of zinc-magnesium-aluminium ternary alloy melts gained by the zinc-magnesium-aluminium ternary alloy in the described step 4) under 500 ℃ of temperature, the mass percent of each element of alloy is: zinc: 40% ~ 45%, magnesium: 30% ~ 35%, aluminium: 20% ~ 25%; Described steel pipe progressively immerses in the alloy solution along the speed of steel pipe axial direction due by 80 ~ 120m/min, leaves solution face place at steel pipe and installs and to blow the solution air knife, with the unnecessary alloy solution of the steel tube surface steel pipe that blows off, forms coating in steel tube surface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102492603A CN102888577A (en) | 2012-07-18 | 2012-07-18 | Process for manufacturing zinc, magnesium and aluminum ternary alloy steel pipe by continuously hot-dip plating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102492603A CN102888577A (en) | 2012-07-18 | 2012-07-18 | Process for manufacturing zinc, magnesium and aluminum ternary alloy steel pipe by continuously hot-dip plating |
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| CN102888577A true CN102888577A (en) | 2013-01-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858497A (en) * | 2017-12-19 | 2018-03-30 | 温州市研制阀门厂 | A kind of Technology for Heating Processing that can improve forging quality |
| CN108707851A (en) * | 2018-04-27 | 2018-10-26 | 浙江康盛股份有限公司 | A kind of zinc-aluminum-magnesium pipe and its processing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463457A (en) * | 2009-01-21 | 2009-06-24 | 河北工业大学 | Method and equipment for hot dip of steel wire |
| JP4544579B2 (en) * | 2004-09-29 | 2010-09-15 | 日新製鋼株式会社 | Manufacturing method of high strength molten Zn-Al-Mg alloy plated steel sheet |
-
2012
- 2012-07-18 CN CN2012102492603A patent/CN102888577A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4544579B2 (en) * | 2004-09-29 | 2010-09-15 | 日新製鋼株式会社 | Manufacturing method of high strength molten Zn-Al-Mg alloy plated steel sheet |
| CN101463457A (en) * | 2009-01-21 | 2009-06-24 | 河北工业大学 | Method and equipment for hot dip of steel wire |
Non-Patent Citations (1)
| Title |
|---|
| 仲海峰等: "Zn-Al-Mg系热浸镀层钢板的研究进展", 《钢铁研究》, vol. 40, no. 1, 29 February 2012 (2012-02-29), pages 58 - 62 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107858497A (en) * | 2017-12-19 | 2018-03-30 | 温州市研制阀门厂 | A kind of Technology for Heating Processing that can improve forging quality |
| CN107858497B (en) * | 2017-12-19 | 2019-04-26 | 温州市研制阀门厂 | A kind of heat treatment process can be improved forging quality |
| CN108707851A (en) * | 2018-04-27 | 2018-10-26 | 浙江康盛股份有限公司 | A kind of zinc-aluminum-magnesium pipe and its processing method |
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Application publication date: 20130123 |