CN106001133A - Conveying rollgangs with cathodic protection for bare pendent electric wires - Google Patents
Conveying rollgangs with cathodic protection for bare pendent electric wires Download PDFInfo
- Publication number
- CN106001133A CN106001133A CN201610563115.0A CN201610563115A CN106001133A CN 106001133 A CN106001133 A CN 106001133A CN 201610563115 A CN201610563115 A CN 201610563115A CN 106001133 A CN106001133 A CN 106001133A
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- CN
- China
- Prior art keywords
- bare
- electric wires
- magnesium
- cathodic protection
- conveying
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B33/00—Safety devices not otherwise provided for; Breaker blocks; Devices for freeing jammed rolls for handling cobbles; Overload safety devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Prevention Of Electric Corrosion (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses conveying rollgangs with cathodic protection for bare pendent electric wires and belongs to the field of magnesium alloy rolling equipment. The conveying rollgangs with the cathodic protection for the bare pendent electric wires are characterized in that the n bare pendent electric wires are mounted on aluminum oxide ceramic conveying rollgang sets arranged on the front side and the rear side of a rolling mill; the upper ends of the n bare pendent electric wires are connected with cathode terminals of adjustable power sources correspondingly; the lower ends of the n bare pendent electric wires make contact with a magnesium plate blank; the negative poles of the adjustable power sources make contact with the magnesium plate blank; the positive poles of the adjustable power sources are grounded; and the electric potentials of the adjustable power sources are adjusted to the corrosion potential of magnesium alloy so that conditions for a cathodic protection criterion can be met. The conveying rollgangs with the cathodic protection for the bare pendent electric wires have the advantages that in the conveying process of the magnesium plate blank, the bare pendent electric wires make contact with the magnesium plate blank under the effect of gravity to enable the voltage of the magnesium plate blank to be negative, and the function of cathodic protection is achieved; and oxidizing reactions of magnesium metal and the phenomenon of hydrogen embrittlement are reduced, and the magnesium alloy rolling yield is further improved.
Description
Technical field
The invention belongs to magnesium alloy rolling apparatus field, be specifically related to a kind of rollgang being shaped with sagging exposed electric wire cathodic protection when rolling magnesium alloy.
Background technology
At present, the production process using rolling magnesium sheet material material both at home and abroad is by rollgang, the magnesium slab of heating to be sent into milling train roll, in this course of conveying, magnesium slab is during being out input into milling train by heating furnace, and during reciprocal rolling, magnesium plate need to keep suitable rolling temperature, the chemical property of magnesium metal is enlivened, and magnesium plate produces chemical reaction Mg+2H with the hydrone in outside air2O=Mg(OH)2+H2, produce hydrogen, air also contain hydrogen in addition, metal flow occurs in the operation of rolling simultaneously, during now hydrogen atom can easily enter magnesium and magnesium alloy, generates magnesium hydride MgH with reactive magnesium2；Cause the magnesium sheet material both sides of the edge after rolling can produce uneven crackle, but also magnesium plate edge stress can be caused uneven, affect the mechanical property of magnesium sheet material.For obtaining qualified magnesium sheet material, often by machining, the magnesium sheet material after rolling being peelled off appearance has the part of crackle, only takes mid portion application, and this will cause the biggest waste.
Summary of the invention
The purpose of the present invention is to propose to a kind of rollgang being shaped with sagging exposed electric wire cathodic protection, the shortcoming that can exist efficiently against prior art.
The object of the invention is realized in:
As shown in Figure 1, 2, the aluminium oxide ceramics rollgang group before and after it is characterized in that milling train 1 is installed equipped with sagging first, second ... the n-th exposed electric wire 3,3 ... 3n, first, second ... the n-th exposed electric wire 3,3 ... 3nUpper end is connected with the negative terminals 7 of regulated power supply 6, and lower end contacts with magnesium slab 2, as shown in Fig. 3; the negative pole of regulated power supply 6 contacts with magnesium slab 2; its plus earth, the current potential of regulated power supply is adjusted to the corrosion potential of magnesium alloy so that it is meet the condition of criteria for cathodic protection.
Advantage of the present invention and good effect be:
Magnesium slab is in course of conveying, owing to sagging exposed electric wire contacts with rolled magnesium slab under gravity, it is achieved the voltage of magnesium slab is negative, creates the effect of cathodic protection；Decrease magnesium burning reaction and the generation of Hydrogen Brittleness Phenomena, and then improve rolling magnesium alloy lumber recovery.
Accompanying drawing illustrates:
Fig. 1 is overall structure schematic diagram of the present invention；
Fig. 2 is the sectional view of A-A in Fig. 1；
Fig. 3 is regulated power supply schematic diagram；
In figure: 1-milling train, 2-magnesium slab, the exposed electric wire of 3-, 4-motor, 5-aluminium oxide ceramics conveying roller, 6-regulated power supply, 7-negative terminals, 8-plus earth, 9-guard shield, 10-chute, 11-regulated power supply case.
Detailed description of the invention
Before Rolling Production, first regulated power supply 6 is opened, sagging exposed electric wire 3,3 ... 3nEnd be close with rollgang, more warmed-up magnesium slab is sent in roller-way, rolls subsequently into milling train 1, by sagging first, second ... the n-th exposed electric wire 3,3 ... 3nContact with magnesium slab 2, it is achieved the voltage of magnesium slab 2 is negative, form a kind of rollgang being shaped with sagging exposed electric wire cathodic protection when rolling magnesium alloy.
Claims (1)
1. it is shaped with a rollgang for sagging exposed electric wire cathodic protection, the aluminium oxide ceramics rollgang group before and after it is characterized in that milling train (1) is installed equipped with sagging first, second ... the n-th exposed electric wire (3,3 ... 3n), first, second ... the n-th exposed electric wire (3,3 ... 3n) upper end is connected with the negative terminals (7) of regulated power supply (6); lower end contacts with magnesium slab (2); the negative pole of regulated power supply (6) contacts with magnesium slab (2); its plus earth; the current potential of regulated power supply (6) is adjusted to the corrosion potential of magnesium alloy so that it is meet the condition of criteria for cathodic protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610563115.0A CN106001133B (en) | 2016-07-16 | 2016-07-16 | It is formed with the rollgang of sagging exposed electric wire cathodic protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610563115.0A CN106001133B (en) | 2016-07-16 | 2016-07-16 | It is formed with the rollgang of sagging exposed electric wire cathodic protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106001133A true CN106001133A (en) | 2016-10-12 |
| CN106001133B CN106001133B (en) | 2018-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610563115.0A Active CN106001133B (en) | 2016-07-16 | 2016-07-16 | It is formed with the rollgang of sagging exposed electric wire cathodic protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106001133B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877305A (en) * | 2019-04-26 | 2019-06-14 | 太原科技大学 | It is formed with the magnesium alloy cast casting bag apparatus of cathodic protection |
| US20220097111A1 (en) * | 2020-09-25 | 2022-03-31 | Taiyuan University Of Technology | Plate and strip rolling process oriented efficient and stable current applying manipulator and method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2754539C1 (en) * | 2020-10-16 | 2021-09-03 | Акционерное общество "Промышленное предприятие материально-технического снабжения "Пермснабсбыт" | Cathodic protection system for metal rolling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822369A (en) * | 1981-07-30 | 1983-02-09 | Sumitomo Metal Ind Ltd | Method for removing oxide film on non-plated surface of one side alloyed molten zinc plated steel plate |
| CN1031724A (en) * | 1987-09-01 | 1989-03-15 | 马克斯艾歇尔钢铁冶炼公司 | Improve the treatment process of corrosion resistance of rolled steel |
| CN201018673Y (en) * | 2006-12-12 | 2008-02-06 | 桂林金格电工电子材料科技有限公司 | Silver-based alloy strip conductive heating equipment |
| CN101947550A (en) * | 2010-09-14 | 2011-01-19 | 苏州有色金属研究院有限公司 | Reverse casting preparation method for magnesium-based aluminum-clad composite plate strip |
| CN205816419U (en) * | 2016-07-16 | 2016-12-21 | 太原科技大学 | It is shaped with the rollgang of sagging exposed electric wire cathodic protection |
-
2016
- 2016-07-16 CN CN201610563115.0A patent/CN106001133B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5822369A (en) * | 1981-07-30 | 1983-02-09 | Sumitomo Metal Ind Ltd | Method for removing oxide film on non-plated surface of one side alloyed molten zinc plated steel plate |
| CN1031724A (en) * | 1987-09-01 | 1989-03-15 | 马克斯艾歇尔钢铁冶炼公司 | Improve the treatment process of corrosion resistance of rolled steel |
| CN201018673Y (en) * | 2006-12-12 | 2008-02-06 | 桂林金格电工电子材料科技有限公司 | Silver-based alloy strip conductive heating equipment |
| CN101947550A (en) * | 2010-09-14 | 2011-01-19 | 苏州有色金属研究院有限公司 | Reverse casting preparation method for magnesium-based aluminum-clad composite plate strip |
| CN205816419U (en) * | 2016-07-16 | 2016-12-21 | 太原科技大学 | It is shaped with the rollgang of sagging exposed electric wire cathodic protection |
Non-Patent Citations (1)
| Title |
|---|
| 张招贤等: "《涂层钛电极》", 31 May 2014, 北京：冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877305A (en) * | 2019-04-26 | 2019-06-14 | 太原科技大学 | It is formed with the magnesium alloy cast casting bag apparatus of cathodic protection |
| US20220097111A1 (en) * | 2020-09-25 | 2022-03-31 | Taiyuan University Of Technology | Plate and strip rolling process oriented efficient and stable current applying manipulator and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106001133B (en) | 2018-02-27 |
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