CN104117539A - Composite billet manufacturing and automatic rolling technology for heavy plate mill - Google Patents
Composite billet manufacturing and automatic rolling technology for heavy plate mill Download PDFInfo
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- CN104117539A CN104117539A CN201410300412.7A CN201410300412A CN104117539A CN 104117539 A CN104117539 A CN 104117539A CN 201410300412 A CN201410300412 A CN 201410300412A CN 104117539 A CN104117539 A CN 104117539A
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Abstract
A composite billet manufacturing and automatic rolling technology for a heavy plate mill comprises a composite billet manufacturing technology and an automatic rolling technology. The composite billet manufacturing and automatic rolling technology particularly comprises the following steps of 1, composite billet manufacturing, wherein the composite billet manufacturing technology comprises the steps of billet selection and vacuum welding and particularly comprises the steps of (1) selecting proper billets according to finished product specifications of extra-thick steel plates; (2) overlapping and welding the selected billets together; 2, automatic rolling, wherein the automatic rolling technology particularly comprises the steps of (1) manufacturing a corresponding rolling schedule table according to models of billet steel raw materials welded in the step (2); (2) inputting the rolling schedule table into a PDI database of the mill; (3) rolling the billet steel welded together through the mill according to the input data. By means of the composite billet manufacturing and automatic rolling technology for the heavy plate mill, limitation existing in an existing heavy plate rolling technology is overcome, and the extra-thick steel plates with the thicknesses larger than 300mm can be rolled. Accordingly, the composite billet manufacturing and automatic rolling technology for the heavy plate mill has high application and popularization value.
Description
Technical field
Special heavy plate production technology in a kind of iron and steel enterprise of the present invention rolling system, the specifically compound base automatic rolling of a kind of heavy plate mill technique.
Background technology
Wide and Thick Slab produce market popularity rate is higher at present, but thickness exceedes the special heavy plate of 300mm is essentially the market vacancy, therefore the special heavy plate product of producing ultra-specification is one of development trend of domestic Metallurgical Enterprise, but because the billet bloom size that casting machine provides is limited, the automation rolling technique rolling special heavy plate that develops at present existing heavy plate mill does not also have ripe rolling procedure and technology.Therefore, the production of special heavy plate exists bottleneck in itself, the limitation existing for overcoming existing rolling technique, and designing a kind of novel special heavy plate rolling mill practice becomes inevitable.
Summary of the invention
The technical problem to be solved in the present invention is to provide the compound base automatic rolling of a kind of heavy plate mill technique, the present invention is directed to current domestic Metallurgical Enterprise cannot exceed 300mm special heavy plate problem by rolling thickness, and specially designed a kind of novel rolling mill practice that rolling thickness exceedes the special heavy plate of 300mm that is applicable to.
The technical scheme that the present invention takes for its technical problem of solution is: the compound base automatic rolling of a kind of heavy plate mill technique, it is characterized in that, and comprise compound blank-making technology and automatic rolling technique, described compound base and automatic rolling specific embodiment are as follows:
Step 1: compound base
Described compound blank-making technology comprises that blank chooses and two processes of vacuum welding, and the concrete technical process in this stage is:
(1), according to the trimmed size of special heavy plate, design billet size, chooses suitable blank;
(2) weld together overlapping the continuous casting material of choosing, be welded into the steel billet that is applicable to specification, for
The rolling of next step special heavy plate provides required rolling raw material;
Step 2: automatic rolling
Described automatic rolling technique comprises the rolling procedure stage that design special heavy plate is produced and controls the milling train control stage that milling train is rolled;
(1) model of the steel billet materials being first welded according to above-mentioned steps is formulated corresponding rolling procedure table;
(2) by the PDI database of the rolling procedure table input milling train designing in above-mentioned steps;
(3) according to the relevant rolling procedure data in input milling train PDI database, milling train carries out substep rolling to the steel billet welding together in step 1;
(4) meet the super-thick steel plate moulding of designing requirement.
Generally more than 300mm in the selection of single sotck thinkness described in step 1, the blank that preferred thickness is 330mm.
In step 1, the overlapping welding of continuous casting material adopts high pressure vacuum welding machine, fully to reach the requirement of weld strength.
The milling train control procedure of described automatic rolling technique comprises the control of milling train one-level and the control of milling train secondary, and described milling train one-level control is intervened module, automatic gauge control, the common realization that forms to realize milling train instructions in the operation of rolling of extreme trace time smooth module by data processing module, semi-automatic pendulum roll gap module, automatic gauge control weights and amplitude limit value respectively.
The invention has the beneficial effects as follows: the compound base automatic rolling of a kind of heavy plate mill of the present invention technique has overcome the limitation that current existing heavy plate rolling technology exists, can rolling thickness exceed the special heavy plate of 300mm, there is application value widely.
Brief description of the drawings
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is process chart of the present invention;
Fig. 2 is the automatic rolling schematic diagram of invention;
Detailed description of the invention
For clearly demonstrating the technical characterstic of this programme, below by a detailed description of the invention, and in conjunction with its accompanying drawing, this programme is set forth.
As shown in Figure 1, the compound base automatic rolling of a kind of heavy plate mill technique, comprises compound blank-making technology and automatic rolling technique, and described compound blank-making technology comprises that blank chooses and two processes of vacuum welding; Described automatic rolling technique comprises the rolling procedure process of design special heavy plate production and the milling train control procedure that control milling train is rolled, and described compound base and automatic rolling specific embodiment are as follows:
Step 1: compound base
(1), according to the trimmed size of special heavy plate, design billet size, chooses suitable blank; In this process, the selection of described single sotck thinkness is generally more than 300mm, the blank that preferred thickness is 330mm.
(2) weld together overlapping the continuous casting material of choosing in said process, to reach the effect of a compact material, sotck thinkness can expand to 660mm by single 330mm only like this, for the steel plate of rolling thickness more than 300mm provides possibility.
In this process, what the overlapping welding of continuous casting material adopted is high pressure vacuum welding machine, can guarantee to reach like this requirement of weld strength, to be welded into the steel billet that is applicable to specification, for next step the rolling of special heavy plate provides required rolling raw material.
Step 2: automatic rolling
(1) model of the steel billet materials being first welded according to above-mentioned steps is formulated corresponding rolling procedure table;
(2) secondly by the PDI database of the rolling procedure table input milling train designing in above-mentioned steps;
(3) then according to the relevant rolling procedure data in input milling train PDI database, milling train carries out substep rolling to the steel billet welding together in step 1;
(4) finally roll out satisfactory super-thick steel plate.
As shown in Figure 2, the milling train control procedure of automatic rolling technique described above specifically comprises the control of milling train one-level and the control of milling train secondary, and described milling train one-level control is intervened module, automatic gauge control module, the common realization that forms to realize milling train instructions in the operation of rolling of extreme trace time smooth module by data processing module, semi-automatic pendulum roll gap module, automatic gauge control weights and amplitude limit value respectively.
Table 1 is the product specification that automatic rolling of the present invention can complete:
| Title | Design parameter (mm) | Parameter (mm) before optimizing | Parameter (mm) after optimizing |
| Slab thickness | 150-300 | 120-330 | 80-660 |
| Width of plate slab | 1400-2300 | 1390-2310 | 1390-2310 |
| Width of plate slab | 2500-4100 | 2490-4110 | 2490-5110 |
| Finished product thickness | 6-120 | 6.0-121 | 5.9-301 |
| Finished width | 1600-4200 | 1590-4200 | 1590-4200 |
| Finished product length | 2890-52000 | 2890-52010 | 2890-52010 |
| Workpiece thickness | 120 | 200 | 300 |
Obviously relax former design specification by visible its of upper figure, to have broken through the design specification of milling train and realize automatic mill in order to realize, need complete following steps:
(1) sum up length, width and the thickness data of slab and finished steel plate in original operation of rolling, the data such as barrel length, chamfering of roughing mill, finishing mill backing roll, working roll.Analyze rollgang barrel length and load-bearing, calculate roughing mill, the manipulator maximum opening degree of finishing mill, minimal openings degree.Optimize the technique of moulding, broadening, extension three stage rolling according to different billet sizes, product size.Carry out broadening, extend two stage rolling for special size steel plate, adopt the pattern of full axial rolling for the steel plate of about 4.11 meters of slab length.The data of part special size are carried out analog rolling, constantly grope Optimal Parameters, optimized rolling procedure table.
(2) solidify pass schedule and rolling parameter, determine the pass schedule input PDI database of different product model, in production afterwards, only need the corresponding slab number of input, can call optimum pass schedule.
(3) for the production of compound base special heavy plate, increase roughing mill, finishing mill passage planishing pass function, in order to solve special heavy plate rolled products plate shape problem, in control system, increase roughing mill, finishing mill passage as planishing pass function.Cross on passage basis at roughing mill, finishing mill sky, model and parameter is modified, strengthen the empty passage of crossing and revise scope, ensure to carry and pass through at extreme trace time band, play extreme trace time smooth effect.
(4) the semi-automatic pendulum roll gap of roughing mill function, for the better thick specification product function of performance roughing mill rolling, roughing mill depress original manually, under automatic mode, increase semi-automatic pattern.Input roll gap and HGC position by operating personnel, realize the semi-automatic pendulum roll gap function of system.
(5) finishing mill AGC (automation THICKNESS CONTROL) weights, amplitude limit intervention functions, for problems such as steel-plate shapes, according to technique needs, newly-increased finishing mill AGC weights, amplitude limit intervention functions, carry out AGC compensation rate and regulate and amplitude limit control.
In above-described embodiment, for automatic rolling, break through milling train former design specification, and the rolling procedure that forms special heavy plate is crucial, need to continues to optimize according to knowhow.
All the other technology of the present invention can realize by update routine on rolling mill design specification basis, and key is the requirement that reaches product quality.
Adopt after above-mentioned technology, the present invention is the domestic first technology of utilizing compound base automatically to produce special heavy plate at Wide and Thick Slab product line.
The above is the preferred embodiment of the present invention, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also regarded as protection scope of the present invention.
Claims (4)
1. the compound base automatic rolling of a heavy plate mill technique, is characterized in that, comprises compound blank-making technology and automatic rolling technique, and described compound base and automatic rolling specific embodiment are as follows:
Step 1: compound base
Described compound blank-making technology comprises that blank chooses and two processes of vacuum welding, and the concrete technical process in this stage is:
(1), according to the trimmed size of special heavy plate, design billet size, chooses suitable blank;
(2) weld together overlapping the continuous casting material of choosing, be welded into and be applicable to the steel billet of specification, for next step the rolling of special heavy plate provides required rolling raw material;
Step 2: automatic rolling
Described automatic rolling technique comprises the rolling procedure stage of design special heavy plate production and the milling train control stage that control milling train is rolled,
(1) model of the steel billet materials being first welded according to above-mentioned steps is formulated corresponding rolling procedure table;
(2) by the PDI database of the rolling procedure table input milling train designing in above-mentioned steps;
(3) according to the relevant rolling procedure data in input milling train PDI database, milling train carries out substep rolling to the steel billet welding together in step 1;
(4) meet the super-thick steel plate moulding of designing requirement.
2. the compound base automatic rolling of a kind of heavy plate mill as claimed in claim 1 technique, is characterized in that, the selection of single sotck thinkness described in step 1 is generally more than 300mm, the blank that preferred thickness is 330mm.
3. the compound base automatic rolling of a kind of heavy plate mill as claimed in claim 2 technique, is characterized in that, in step 1, the overlapping welding of continuous casting material adopts high pressure vacuum welding machine, fully to reach the requirement of weld strength.
4. the compound base automatic rolling of a kind of heavy plate mill as claimed in claim 1 technique, it is characterized in that, the milling train control procedure of the technique of automatic rolling described in step 2 comprises the control of milling train one-level and the control of milling train secondary, and described milling train one-level control is intervened module, automatic gauge control, the common realization that forms to realize milling train instructions in the operation of rolling of extreme trace time smooth module by data processing module, semi-automatic pendulum roll gap module, automatic gauge control weights and amplitude limit value respectively.
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| CN201410300412.7A CN104117539A (en) | 2014-06-28 | 2014-06-28 | Composite billet manufacturing and automatic rolling technology for heavy plate mill |
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| CN201410300412.7A CN104117539A (en) | 2014-06-28 | 2014-06-28 | Composite billet manufacturing and automatic rolling technology for heavy plate mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107774711A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | A kind of composite blank preparation method for producing ultra-thick steel plates |
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| JPS6393410A (en) * | 1986-10-07 | 1988-04-23 | Nippon Steel Corp | High efficiency slab assembly method |
| JPH05192777A (en) * | 1992-01-21 | 1993-08-03 | Sumitomo Metal Ind Ltd | Manufacture of copper clad steel sheet |
| CN101590596A (en) * | 2009-06-25 | 2009-12-02 | 莱芜钢铁集团有限公司 | A kind of method of manufacturing extra-thick plate blank by accumulative roller welding process |
| CN101797588A (en) * | 2010-04-01 | 2010-08-11 | 中色科技股份有限公司 | Secondary control rolling force forecasting method of hot mill |
| CN102764960A (en) * | 2012-07-27 | 2012-11-07 | 济钢集团有限公司 | Method for manufacturing composite steel plate for hydrogenation reaction kettle barrel |
| CN102764936A (en) * | 2012-07-27 | 2012-11-07 | 济钢集团有限公司 | Big-thickness slab manufacturing technique |
| CN102873104A (en) * | 2011-07-13 | 2013-01-16 | 上海优控科技有限公司 | Medium width thick plate controlled rolling technology |
| CN102989786A (en) * | 2012-12-20 | 2013-03-27 | 济钢集团有限公司 | Optimal control system of shape and thickness of steel plate |
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2014
- 2014-06-28 CN CN201410300412.7A patent/CN104117539A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6393410A (en) * | 1986-10-07 | 1988-04-23 | Nippon Steel Corp | High efficiency slab assembly method |
| JPH05192777A (en) * | 1992-01-21 | 1993-08-03 | Sumitomo Metal Ind Ltd | Manufacture of copper clad steel sheet |
| CN101590596A (en) * | 2009-06-25 | 2009-12-02 | 莱芜钢铁集团有限公司 | A kind of method of manufacturing extra-thick plate blank by accumulative roller welding process |
| CN101797588A (en) * | 2010-04-01 | 2010-08-11 | 中色科技股份有限公司 | Secondary control rolling force forecasting method of hot mill |
| CN102873104A (en) * | 2011-07-13 | 2013-01-16 | 上海优控科技有限公司 | Medium width thick plate controlled rolling technology |
| CN102764960A (en) * | 2012-07-27 | 2012-11-07 | 济钢集团有限公司 | Method for manufacturing composite steel plate for hydrogenation reaction kettle barrel |
| CN102764936A (en) * | 2012-07-27 | 2012-11-07 | 济钢集团有限公司 | Big-thickness slab manufacturing technique |
| CN102989786A (en) * | 2012-12-20 | 2013-03-27 | 济钢集团有限公司 | Optimal control system of shape and thickness of steel plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107774711A (en) * | 2016-08-31 | 2018-03-09 | 鞍钢股份有限公司 | A kind of composite blank preparation method for producing ultra-thick steel plates |
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Application publication date: 20141029 |