CN104438329A - Rolling method for magnesium alloy plates - Google Patents
Rolling method for magnesium alloy plates Download PDFInfo
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- CN104438329A CN104438329A CN201410743158.8A CN201410743158A CN104438329A CN 104438329 A CN104438329 A CN 104438329A CN 201410743158 A CN201410743158 A CN 201410743158A CN 104438329 A CN104438329 A CN 104438329A
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Abstract
The invention discloses a rolling method for magnesium alloy plates, belongs to the metal plate rolling technology, and aims to solve the problem of low rolling efficiency caused by low heating speed, low heating efficiency and poor temperature control accuracy of rollers in the prior art. The rolling method includes adjusting the size of a gap between an upper roller cylinder and a lower roller cylinder according to technological requirements; adjusting positions of support rolls to enable sleeves to be firmly mounted between the support rolls and the rollers in a sleeving manner; starting a rolling machine to enable the rollers to drive the sleeves to rotate; powering on vortex heating coils to heat the sleeves, and detecting temperatures of the sleeves and feeding back temperature data to a heating control system by temperature sensors; pre-heating a magnesium alloy plate to a specified temperature; when the temperatures of the sleeves reach a set value, rolling the magnesium alloy plate. The rolling method is applied to rolling of magnesium alloys, titanium alloys and molybdenum alloys, and has the advantages of high heating speed, high temperature control accuracy, high stability, safety in heating and easiness in maintenance.
Description
Technical field
The invention belongs to the rolling technique of sheet metal, be specifically related to a kind of milling method of magnesium alloy plate.
Background technology
Magnesium alloy has that density is little, specific strength and specific stiffness is high, electromagnetic wave shielding is good, damping shock absorption is good and be easy to the advantages such as machining, has broad application prospects in fields such as Aero-Space, automobile and electronic products.China is magnesium resource big country, and reserves and former magnesium export volume all occupy first place in the world, but has the magnesium alloy plate of high added value and the production technology comparatively backwardness of section bar, limits the range of application of magnesium alloy.
One of difficult point of magnesium alloy plate rolling technique is rolling temperature range narrower (being generally 50 DEG C), and magnesium alloy specific heat capacity is low, rapid heat dissipation.During Rolling Production magnesium alloy plate, as too low in roller surface temperature, when magnesium plate and roll contact, magnesium plate temperature can reduce rapidly, ductility deteriorates, and cause rolling plate and produce face crack and raw edges, lumber recovery declines, and cost increases.Therefore, in magnesium alloy rolling process, roll must be heated to a suitable temperature ranges.
At present, conventional roll mode of heating, can be divided into the heating of roll entirety and online surface heating.The heating of roll entirety generally uses roller heating stove, puts in roller heating stove the temperature being heated to and specifying into, then taken out from stove by roll by roll, come into operation, when roll is down to below operating temperature, need quit work, again load in stove and heat, operate and so forth.This mode of heating uses inconvenient, affects the operating efficiency of milling train.The heating of roll entirety also can adopt the inner water flowing of roll or logical oil, or installation thermocouple heats, although this mode of heating achieves the on-line heating of roll, but its drawback is that the roll of hollow-core construction needs special facture, hollow-core construction can cause roll stiffness intensity to reduce, the technique needs of larger draught pressure cannot be adapted to, and this mode of heating firing rate is slower, roll is longer for preheating time, consume energy high, large by heated roll thermal inertia, roller temperature control accuracy is low, device for simultaneous heating is at core of the roll, roll is changed more difficult, the requirement of present-day mill High-efficient Production cannot be adapted to.
Roll surface heating normally utilizes combustion heat source breaker roll surface directly to heat, and removes thermal source, then be rolled after reaching target temperature.Because roll constantly dispels the heat, between different blank and roll, even the diverse location of same blank is different from the contact temperature difference between roll, and the structural homogenity of rolled plate is affected; Due to will rolling be stopped at set intervals, then heated roll, rolling efficiency is low, and naked light burning exists larger potential safety hazard.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of milling method of magnesium alloy plate, the firing rate of solution prior art breaker roll is comparatively slow, the efficiency of heating surface is low, temperature control precision is poor, causes the technical problem that rolling efficiency is low.
The present invention is achieved through the following technical solutions:
A milling method for magnesium alloy plate, is characterized in that: the concrete steps of described method are:
1. adjust roll gap gap by technological requirement, namely adjust the gap size between upper and lower two rollers;
2. adjust the backing roll position on support post, sleeve is firmly sleeved between backing roll and roll;
3. open milling train, make roll by setting speed start rotate, sleeve roll drive next play rotation;
4. eddy heating for heating coil electricity, to sleeve heating, meanwhile, temperature sensor starts the temperature detecting sleeve, and temperature data is fed back to heating control system;
5. magnesium alloy plate is preheated to set point of temperature;
6., when the temperature of sleeve reaches setting value, the rolling of magnesium alloy plate is carried out.
The present invention compared with prior art, has the following advantages and beneficial effect:
The present invention owing to being set with sleeve outside two rolls, and is provided with the backing roll of tensioning sleeve in sleeve; Temperature sensor sleeve wall installed eddy heating for heating coil and has been connected with heating control system wire, therefore the constant temperature rolling of the difficult deformable metals such as magnesium alloy is achieved, have that firing rate is fast, temperature control precision is high, good stability, heating safety, advantage for ease of maintenaince, solve the technical problem that existing roll entirety heats and roll surface heating speed is slow, the efficiency of heating surface is low, temperature control precision is low, be particularly suitable for the Rolling Production of the difficult deformable metals such as magnesium alloy, titanium alloy, molybdenum alloy.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram (stereogram) of the present invention.
Detailed description of the invention
Embody the exemplary embodiments of feature & benefits of the present invention, will describe in detail in the following description by reference to the accompanying drawings.Be understood that the present invention can have various changes in different embodiments, it neither departs from protection scope of the present invention, and explanation wherein and to be shown in be use when explain in essence, and be not used to limit the present invention.
As shown in Figure 1, a kind of milling method of magnesium alloy plate, its concrete steps are:
1. adjusting roll gap gap by technological requirement is 1mm, and the gap size namely adjusted between upper and lower two rollers 2 is 1mm;
2. adjust backing roll 7 position on support post 6, make sleeve 2 firmly be sleeved between backing roll 7 and roll 8;
3. open milling train, make roll 8 by setting speed 60 revs/min start rotate, sleeve 2 roll 8 drive next play rotation;
4. eddy heating for heating coil 3 is energized, and heats to sleeve 2, and simultaneous temperature sensor 4 starts the temperature detecting sleeve 2, and temperature data is fed back to heating control system; When sleeve 2 temperature is lower than design temperature 300 DEG C, eddy heating for heating coil 3 heating with full power, when sleeve 2 temperature is higher than design temperature 300 DEG C, control system is turned down eddy heating for heating coil 3 power or is stopped heating; Along with sleeve 2 conducts heat to roll 8, magnesium alloy plate 5, sleeve 2 temperature declines gradually, and when temperature is reduced to design temperature less than 300 DEG C, control system heightens eddy heating for heating coil 3 power, improve sleeve 2 temperature, finally make the temperature stabilization of sleeve 2 design temperature about 300 DEG C;
5. magnesium alloy plate 5 thick for 3mm is preheated to set point of temperature 300 DEG C;
6., when the temperature of sleeve 2 reaches setting value, the rolling of magnesium alloy plate 5 is carried out.
Device of the present invention, comprise: be fixed on two laterally zygomorphic rolls 8 in frame 1, two described rolls 8 are set with a sleeve 2, in described sleeve 2, at described roll 8 symmetric position, the backing roll 7 arranging tensioning sleeve, described backing roll 7 is connected with the support post 6 be fixed in described frame 1, and can rotate with sleeve rotating under the driving of its axis at roll; Be positioned at rolling supplied materials side, described sleeve 2 installs eddy heating for heating coil 3 around its barrel; Between magnesium alloy plate 5 and described eddy heating for heating coil 3, arrange the temperature sensor 4 contacted with described sleeve 2, described temperature sensor 4 is connected with heating control system wire, is regulated the heating power of eddy heating for heating coil 3 by heating control system.
Described support post 6 is provided with the elongated hole 6.1 for adjustable supporting roll 7 position, is convenient to carry out tensioning sleeve 2 with backing roll 7.
Described sleeve 2 is made up of heat-resistance high-strength steel, and its wall thickness is 8 ~ 10 millimeters, can meet the requirement of strength required for rolling magnesium alloy plate.
The diameter of described sleeve 2 is 1.2 ~ 1.5 times of roller diameter, and the length of described sleeve 2 is equal with the length of roll.
The present invention specifically can implement in a variety of forms and not depart from spirit or the essence of invention, so be to be understood that, above-described embodiment is not limited to aforesaid details, and should explain widely in claim limited range, therefore fall into change in claim or its equivalent scope and remodeling and all should be claim and contained.
Claims (1)
1. a milling method for magnesium alloy plate, is characterized in that: the concrete steps of described method are:
1. adjust roll gap gap by technological requirement, namely adjust the gap size between upper and lower two sleeves (2);
2. adjust backing roll (7) position on support post (6), make sleeve (2) firmly be sleeved between backing roll (7) and roll (8);
3. open milling train, make roll (8) by setting speed start rotate, sleeve (2) roll (8) drive next play rotation;
4. eddy heating for heating coil (3) energising, to sleeve (2) heating, meanwhile, temperature sensor (4) starts the temperature detecting sleeve (2), and temperature data is fed back to heating control system;
5. magnesium alloy plate (5) is preheated to set point of temperature;
6., when the temperature of sleeve (2) reaches setting value, the rolling of magnesium alloy plate (5) is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410743158.8A CN104438329A (en) | 2014-12-08 | 2014-12-08 | Rolling method for magnesium alloy plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410743158.8A CN104438329A (en) | 2014-12-08 | 2014-12-08 | Rolling method for magnesium alloy plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104438329A true CN104438329A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410743158.8A Pending CN104438329A (en) | 2014-12-08 | 2014-12-08 | Rolling method for magnesium alloy plates |
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| CN (1) | CN104438329A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214196A (en) * | 2017-07-13 | 2017-09-29 | 太原科技大学 | A kind of detrusion device of magnesium alloy equal channel angular rolling |
| CN109365531A (en) * | 2018-12-14 | 2019-02-22 | 太原科技大学 | A kind of melting fibre reinforced magnalium casting and rolling composite plate molding equipment and method online |
| CN112170491A (en) * | 2020-09-30 | 2021-01-05 | 太原科技大学 | Metal polar plate rolling and drawing forming machine |
| CN113426835A (en) * | 2021-08-24 | 2021-09-24 | 南通维益机电有限公司 | Hot rolling device for magnesium-aluminum alloy plate |
| CN109365531B (en) * | 2018-12-14 | 2024-05-28 | 太原科技大学 | Online molten carbon fiber reinforced aluminum-magnesium composite board casting-rolling forming equipment and method |
Citations (5)
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|---|---|---|---|---|
| JPS6284809A (en) * | 1985-10-09 | 1987-04-18 | Showa Denko Kk | Hot rolling mill |
| CN1365864A (en) * | 2001-01-15 | 2002-08-28 | 三菱重工业株式会社 | Induction heating device for roll and induction heating method |
| JP2005125333A (en) * | 2003-10-21 | 2005-05-19 | Nippon Steel Corp | Method for rolling thick plate product |
| CN101821024A (en) * | 2007-10-16 | 2010-09-01 | Ihi金属生产设备科技株式会社 | Magnesium alloy hot-rolling mill |
| CN103240275A (en) * | 2013-05-14 | 2013-08-14 | 吉林大学 | On-line heating device and heating method of magnesium alloy sheet warm rolling rollers |
-
2014
- 2014-12-08 CN CN201410743158.8A patent/CN104438329A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6284809A (en) * | 1985-10-09 | 1987-04-18 | Showa Denko Kk | Hot rolling mill |
| CN1365864A (en) * | 2001-01-15 | 2002-08-28 | 三菱重工业株式会社 | Induction heating device for roll and induction heating method |
| JP2005125333A (en) * | 2003-10-21 | 2005-05-19 | Nippon Steel Corp | Method for rolling thick plate product |
| CN101821024A (en) * | 2007-10-16 | 2010-09-01 | Ihi金属生产设备科技株式会社 | Magnesium alloy hot-rolling mill |
| CN103240275A (en) * | 2013-05-14 | 2013-08-14 | 吉林大学 | On-line heating device and heating method of magnesium alloy sheet warm rolling rollers |
Non-Patent Citations (1)
| Title |
|---|
| 陈彦博等: "《有色金属轧制技术》", 30 September 2007, article "镁板带热轧工艺", pages: 114-115 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214196A (en) * | 2017-07-13 | 2017-09-29 | 太原科技大学 | A kind of detrusion device of magnesium alloy equal channel angular rolling |
| CN109365531A (en) * | 2018-12-14 | 2019-02-22 | 太原科技大学 | A kind of melting fibre reinforced magnalium casting and rolling composite plate molding equipment and method online |
| CN109365531B (en) * | 2018-12-14 | 2024-05-28 | 太原科技大学 | Online molten carbon fiber reinforced aluminum-magnesium composite board casting-rolling forming equipment and method |
| CN112170491A (en) * | 2020-09-30 | 2021-01-05 | 太原科技大学 | Metal polar plate rolling and drawing forming machine |
| CN112170491B (en) * | 2020-09-30 | 2023-04-04 | 太原科技大学 | Metal polar plate rolling and drawing forming machine |
| CN113426835A (en) * | 2021-08-24 | 2021-09-24 | 南通维益机电有限公司 | Hot rolling device for magnesium-aluminum alloy plate |
| CN113426835B (en) * | 2021-08-24 | 2021-10-29 | 南通维益机电有限公司 | Hot rolling device for magnesium-aluminum alloy plate |
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Application publication date: 20150325 |