CN100479943C - Aluminium base material hot continuous rolling process used in PS plate - Google Patents
Aluminium base material hot continuous rolling process used in PS plate Download PDFInfo
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- CN100479943C CN100479943C CNB200710110679XA CN200710110679A CN100479943C CN 100479943 C CN100479943 C CN 100479943C CN B200710110679X A CNB200710110679X A CN B200710110679XA CN 200710110679 A CN200710110679 A CN 200710110679A CN 100479943 C CN100479943 C CN 100479943C
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Abstract
The invention relates a PS version aluminum base material heat rolling, then heat rough rolling then fine rolling, with previous rolling temperature starting from 470deg.C to 360-380deg.C finally after 11 times rolling, till 230-250deg.C after 4 times fine rolling. The aluminum base thermal rolling process is even in distribution and evasive, with electrolytic corrosion obviously better than that of traditional one.
Description
Technical field
The present invention relates to the production method of a kind of pre-coating light sensitive plate with aluminium base, by improvement to the aluminium base hot continuous rolling process, so that improve this pre-coating photosensitive aluminium base quality, guarantee to form needed Grains structure, size and evenly distribution with the pre-coating light sensitive plate of its production.
Background technology
Produce in the pre-coating light sensitive plate process with aluminium base, a most important operation is that aluminium base is carried out electrolyzing and coarsening, form needed Grains structure, size and evenly distribute, guarantee that the printing image restoring that prints with institute's pre-coating light sensitive plate of producing is good, definition is high, rich color.The pre-coating light sensitive plate quality especially Grains quality after the electrolytic etching directly affects print quality.
At present, the pre-coating light sensitive plate aluminium base hot continuous rolling process that southwest Aluminum (group) Co., Ltd adopts, carry out hot roughing earlier, the breaking down temperature is controlled to be 490 ℃, by 15-17 time rolling, to finishing temperature be about 340 ℃, pass through hot finishing again, the control finishing temperature is for being not less than 260 ℃, and then carries out the cold rolling finished product that obtains.The pre-coating light sensitive plate aluminium base that this production technology production obtains, at aspect the compound uniformity and electrolytic etching uniformity aspect is not very desirable, therefore also exist non-uniform corrosion phenomenons such as local corrosion velocity perturbation and corroding metal come off, the printing of feasible pre-coating light sensitive plate printing of making still has the space of raising.
Summary of the invention
Purpose of the present invention just is to provide a kind of pre-coating light sensitive plate aluminium base hot continuous rolling process, to improve compound uniformity and the corrosion uniformity of rolling pre-coating light sensitive plate with aluminium base.
The present invention adopts following scheme: a kind of pre-coating light sensitive plate aluminium base hot continuous rolling process, after carrying out hot roughing, carry out hot finishing again, the breaking down temperature of described hot roughing is 460-480 ℃, through 11 times rolling, finishing temperature is 360-380 ℃; Described hot finishing is rolling through 4 times, and finishing temperature is 230-250 ℃.
The preferable breaking down temperature of described hot roughing is 470 ℃.
The present invention compares with the aluminium base hot continuous rolling process with traditional pre-coating light sensitive plate, reduced the finishing temperature of breaking down and the finishing temperature and the hot finishing of hot roughing, and reduced the rolling number of times of hot roughing, carry out hot roughing and make the more abundant fragmentation of cast sturcture by depressing greatly at low temperature, help increasing the distortion free energy in the material, increase compound and separate out kinetic energy, improve the shape and the distribution of compound, make that it is more even, more refinement of fibr tissue, the corrosion uniformity is better.And this technology do not need to change existing equipment of hot rolling, and rolling temperature is low to help energy savings, and applicability is good.
Description of drawings
Fig. 1 for the hot finishing of adopting prior art and obtaining after pre-coating light sensitive plate with the photo of organizing of aluminium base 50X.
Fig. 2 for the hot finishing of adopting prior art and obtaining after pre-coating light sensitive plate with the photo of organizing of aluminium base 200X.
Fig. 3 adopts the organize photo of the pre-coating light sensitive plate of prior art acquisition with aluminium base finished product 200X.
Fig. 4 for the hot finishing of adopting the technology of the present invention and obtaining after pre-coating light sensitive plate with the photo of organizing of aluminium base 50X.
Fig. 5 for the hot finishing of adopting the technology of the present invention and obtaining after pre-coating light sensitive plate with the photo of organizing of aluminium base 200X.
Fig. 6 adopts the organize photo of the pre-coating light sensitive plate of the technology of the present invention acquisition with aluminium base finished product 200X.
The pre-coating light sensitive plate that Fig. 7 obtains for the employing prior art polarization curve of aluminium base finished product.
The pre-coating light sensitive plate that Fig. 8 obtains for the employing the technology of the present invention polarization curve of aluminium base finished product.
The specific embodiment
Below in conjunction with the drawings and specific embodiments pre-coating light sensitive plate of the present invention is described further with the aluminium base hot continuous rolling process.
1, pre-coating light sensitive plate is as follows with aluminium base hot continuous rolling process process:
With 520mm thick aluminium ingot casting through every 15mm mill face after, in pusher continuous furnace, be heated to metal temperature 460-480 ℃, generally be advisable with 470 ℃, be incubated the hot rolling of coming out of the stove in 1 hour then.
Hot roughing breaking down temperature is 470 ℃, rolling ingot casting is rolled into 35mm sheet material by 495mm through 11 times, and 11 times the operation of rolling is:
495mm-475mm-450mm-415mm-365mm-305mm-245mm-185mm-135mm-95 mm-60mm-35mm, finishing temperature is controlled at 360-380 ℃.
Hot finishing is rolling through four times, and its process is:
35mm-20mm-11mm-6mm-3.5mm, 240 ± 10 ℃ of finishing temperatures.Obtain the pre-coating light sensitive plate aluminium base thin plate of 3.5mm.
Hot finishing is later on again through cold rolling at normal temperatures, and by four rolling 0.27mm thin plate finished products that obtain, four operations of rolling are 3.5mm-1.6mm-0.72mm-0.42mm-0.27mm.
2, analysis of experiments
(1) metal structure relatively
To compare with aluminium base and the aluminium base metal structure that existing southwestern Aluminum group produces with traditional handicraft with the pre-coating light sensitive plate of method for preparing, its photo such as Fig. 1 are to shown in Figure 6.
By Fig. 1 shown in the photo shown in Figure 6, use the pre-coating light sensitive plate aluminium base photo of method for preparing of the present invention among Fig. 4-Fig. 6, hot finishing 50X photo, 200X photo and finished product 200X photo contrast among its Fig. 1-Fig. 3 that obtains through sheet material 50X photo after hot finishing, 200X photo and the last finished product 200X photo that obtains through cold rolling back again and traditional handicraft, as can be seen:
The light field tissue: the compound size of sample and finished product sample is slightly tiny after traditional hot roll process and its hot roughing of new hot rolling technology of the present invention, and more even relatively, disperse distributes.
In addition, the polarisation tissue: traditional hot roll process sample is short, thick bacillar structure, and the fibr tissue of new hot rolling technology sample is more tiny, and crystallization degree is high slightly on the contrary again.
(2) two explained hereafter pre-coating light sensitive plates detect contrast with aluminium base finished product corrosive nature
The polarization curve that two process heat rolling stocks manufacture a finished product by identical cold-rolling process is seen Fig. 7 and Fig. 8, and corrosion potential and corrosion electric current density see Table 1.
The corrosion electric current density and the corrosion potential of table 1 liang explained hereafter product finished product
| Corresponding technology | I corr(Amp/cm 2) | E corr(V) |
| The traditional hot roll process | 2.0473E-6 | -0.62042 |
| New hot rolling technology of the present invention | 2.1527E-5 | -0.70954 |
Can find out from Fig. 7 and Fig. 8 contrast: the polarization curve smoothness new technology more of the present invention of traditional handicraft is obviously poor, burr is more, the pre-coating photosensitive aluminium base corrosion uniformity that shows traditional handicraft production is bad, have non-uniform corrosion phenomenons such as local corrosion velocity perturbation and corroding metal come off, and new technology corrosion uniformity is better.
As can be seen from Table 1, the corrosion potential of new technology of the present invention moves than normal process is more negative, illustrates that new technology production product activity is bigger, and is big from the normal technology of corrosion tendency.The current density ratio normal process is obviously high, illustrates that corrosion rate is very fast.
Pre-coating light sensitive plate is required with aluminium base just soon and evenly for corrosion rate, and comparative analysis finds out that the corrosive nature of new technology obviously is better than normal process.
Claims (4)
1, a kind of pre-coating light sensitive plate aluminium base hot continuous rolling process carries out hot finishing again after carrying out hot roughing, it is characterized in that: the breaking down temperature of described hot roughing is 460-480 ℃, through 11 times rolling, finishing temperature is 360-380 ℃; Described hot finishing is rolling through 4 times, and finishing temperature is 230-250 ℃.
2, pre-coating light sensitive plate as claimed in claim 1 aluminium base hot continuous rolling process, it is characterized in that: the rolling thickness of described hot each process of roughing is followed successively by:
495mm-475mm-450mm-415mm-365mm-305mm-245mm-185mm-135mm-95mm-60mm-35mm。
3, pre-coating light sensitive plate as claimed in claim 1 or 2 aluminium base hot continuous rolling process is characterized in that, the rolling thickness of described each process of hot finishing is followed successively by:
35mm-20mm-11mm-6mm-3.5mm。
4, pre-coating light sensitive plate as claimed in claim 1 or 2 aluminium base hot continuous rolling process is characterized in that: the breaking down temperature of described hot roughing is 470 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200710110679XA CN100479943C (en) | 2007-06-08 | 2007-06-08 | Aluminium base material hot continuous rolling process used in PS plate |
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| CNB200710110679XA CN100479943C (en) | 2007-06-08 | 2007-06-08 | Aluminium base material hot continuous rolling process used in PS plate |
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| CN101058100A CN101058100A (en) | 2007-10-24 |
| CN100479943C true CN100479943C (en) | 2009-04-22 |
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| CN101596548B (en) * | 2009-07-02 | 2011-04-27 | 西南铝业（集团）有限责任公司 | Manufacturing method and manufacturing machine array of bimetallic plates |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871076A (en) * | 2003-10-24 | 2006-11-29 | Sms迪马格股份公司 | Rolling mill for hot-rolling metal, in particular, aluminium, and hot-rolling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1871076A (en) * | 2003-10-24 | 2006-11-29 | Sms迪马格股份公司 | Rolling mill for hot-rolling metal, in particular, aluminium, and hot-rolling method |
Non-Patent Citations (2)
| Title |
|---|
| 铝热轧及热连轧轧制技术. 魏云华，24-26，轻合金加工技术. 2003 |
| 铝热轧及热连轧轧制技术. 魏云华，24-26，轻合金加工技术. 2003 * |
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