CN101607262A - A kind of production technology procedures for steel rolling - Google Patents
A kind of production technology procedures for steel rolling Download PDFInfo
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- CN101607262A CN101607262A CNA2009100318013A CN200910031801A CN101607262A CN 101607262 A CN101607262 A CN 101607262A CN A2009100318013 A CNA2009100318013 A CN A2009100318013A CN 200910031801 A CN200910031801 A CN 200910031801A CN 101607262 A CN101607262 A CN 101607262A
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Abstract
Disclosed by the invention is a kind of production technology procedures for steel rolling, and its technological process is: blank is prepared, rolling, the finishing of the heating of steel, steel and warehouse-in; The heating process flow process of this steel is: (1) blank is gone into stove, and ready blank is joined in the heating furnace by pusher; (2) blank heating, the batching that is added in the stove by step (1) heats by heating furnace according to blank heating system and heat time heating time; (3) blank tapping, blank through step (2) heating after, tap by extractor after meeting start rolling temperature.The present invention is rolling to be rolled steel billet by duo mill, and adopted the groove rolling method, help improving production technology level and its professional speciality of performance, thereby reach the purpose of high yield, high-quality, low consumption, saved the energy, reduce environmental pollution and effectively improved the production efficiency of utilization rate of equipment and installations and steel rolling, and have that production cost is low, output is high and advantages of saving energy and reducing emission, be suitable for extensive centralized production.
Description
Technical field:
What the present invention relates to is a kind of technological process, and what relate in particular to is a kind of production technology procedures for steel rolling.
Background technology:
Steel rolling is compressed the pressure processing process that produces plastic deformation with regard to being meant metal by the roll shop building of rotation.The purpose of steel rolling is in order to obtain the steel of required form on the one hand, is in order to improve the internal soundness of steel, to improve the mechanical property of steel on the other hand.
Production technology procedures for steel rolling (rolling production process now) becomes to have the combination and the order of the required series of processes of the steel of definite shape, size and performance for the sharp or billet rolling of steel.Rolled products difference, the technological process of production are also different.A kind of formulation of production technology procedures for steel rolling is one of big event of mill design.At present, a kind of production technology procedures for steel rolling can reduce 3 kinds graphic substantially, promptly carbon steel (low-alloy steel) the hot rolling technological process of production is graphic, the steel alloy hot rolling technological process of production is graphic and the cold working technological process of production is graphic.In the carbon steel technological process of production is graphic,, may adopt not to be all technological process, but their getable techno-economic effects are different if produce with a kind of steel.Therefore, when working out product process flow, correctly select the order of required operation, array of procedures, the particular content and the parameter thereof of each operation, so just can reach the purpose of high yield, high-quality, low consumption.
Must observe following principle when working out technological process: (1) product must reach the requirement of technical conditions; (2) plastic working of material is gone easily; (3) production scale can realize; (4) product cost is low; (5) workman's working condition is good, and safety is secure.But in the carbon steel and the low-alloy steel technological process of production, the technological process that can omit rolled products sometimes is a more complicated, and the choice of operation is not arbitrarily.In addition, along with raising to the rolled products quality requirement, the application of the expansion of variety range and new technology, new equipment, the technological process of rolled products and the particular content of operation also have corresponding variation.For hot-working, a kind of production technology procedures for steel rolling is made up of following basic working procedure but just on the whole: i.e. blank preparation, blank heating, steel rolling, roll the back and cool off and finishing.The cold working technological process of production is subjected to the influence of its characteristics, processes and will heat-treat and pickling as last, and will carry out the one or many intermediate heat-treatment in process.Therefore, in above-mentioned three kinds of steel rolling process flow processs, there is the shortcoming that its flow process complexity, establishing and basis instrument are invested height, energy consumption is high and yield poorly, can not reaches the purpose of energy-conserving and environment-protective.
Summary of the invention:
The present invention seeks to be to provide a kind of and use that equipment is few, production efficiency is high, cost is low and the technological process of production of the steel rolling of energy-conserving and environment-protective, to overcome the deficiency on the prior art.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of production technology procedures for steel rolling is subjected to roll shop building extruding to make its plastic deformation the metal and the steel rolling that generates, it is characterized in that its technological process is: blank is prepared, rolling, the finishing of the heating of steel, steel and warehouse-in; Further comprising the steps of in the heating operation process of described steel:
(1) blank is gone into stove, and ready blank is joined in the heating furnace by pusher;
(2) blank heating, the batching that is added in the stove by step (1) heats by heating furnace according to blank heating system and heat time heating time;
(3) blank tapping, blank when meeting start rolling temperature, are carried out the tapping program by extractor after heating through step (2).
The rolling of described steel undertaken billet rolling by duo mill, and this steel billet produces distortion at the roll shop building of a pair of switched in opposite.The collocation form that described duo mill adopts is a continous way, and aspects such as its productivity ratio and quality are all superior than other modes.
Further, the finishing of steel with the warehouse-in in also comprise Double Dimension Flying Shears and heat inspection, cold bed cooling, scale cooling, product inspection, metering is wrapped greatly and the warehouse-in of listing.Finished product enters cold bed among the present invention, and dresser must be with red steel by straight concordant spreading out, and alignment in the time of must taking advantage of high temperature if any curved bar avoids the rolled piece surface to draw together wound, has improved utilization rate of equipment and installations and production output simultaneously.
As preferably, the heating furnace that is adopted in the described blank heating is two sections continuous-type furnaces of right coal gas, also is provided with thermocouple automatic temperature measurement instrument and self-balancing recorder at described heating furnace, is used to measure the heating index that adds in the stove.
As preferably, described blank heating comprises preheating section and bringing-up section, and its preheating section is slowly heating, and be 90～120 minutes its heat time heating time, and heating-up temperature is 500～800 ℃; Bringing-up section is a Fast Heating, and be 60～90 minutes its heat time heating time, and heating-up temperature is 1100～1300 ℃.Steel billet is heated in the technological control temperature scope is rolled, this moment, steel billet had good plasticity, and is favourable to being out of shape, and reduces the equipment component wearing and tearing, and can adopt than heavy reduction, minimizing passage, increase rolling rate.
Further, further comprising the steps of in the described operation of rolling:
(a) roughing, the steel billet that obtains in the heating operation by steel meets start rolling temperature and delivers to roll mill by rollgang again and carry out roughing 7-9 passage;
(b) crop by the steel billet that step (a) obtains, is delivered to hot shears by rollgang again and is carried out crop;
(c) roll in,, deliver to again in the machine row and roll 4 passages by the steel billet that step (b) obtains;
(d) back-end crop, the steel billet by step (c) obtains is pursuing root by shearing equipment.
In the operation of rolling, necessary crop of rolled piece and back-end crop are so that carry out the operation of rolling smoothly.The crop of finished product, back-end crop and cut-out mainly are the cut lengths in order to excise the steel two irregular parts of distortion and to obtain to stipulate.
Start rolling temperature in the described operation of rolling is 1100-1200 ℃, and finishing temperature is 850-950 ℃; Finishing temperature is controlled at more than the recrystallization temperature and is rolled, and resistance of deformation reduces, and energy consumption therefore reduces, and has guaranteed mechanical performance of products.
As preferably, the shearing equipment that adopts in the described crop operation is a cutter, and its shearing force is 100～160 tons, and in the described back-end crop operation, used shearing equipment is that lock is cut, and its shearing force is 100～160 tons.
As preferably, described finished product is sheared the shearing equipment that uses and is cutter, and its shearing force is 250 tons.Finished product is sheared the technological operation rules, is 9 meters scales by the shearing of stove lot number, sheared length, and permissible variation is 0-+50mm, never allowed minus deviation.End reinforcedly should shear honestly, local deformation should not influence use.Shear the steel ruler of usefulness 〉=10m first and measure the finished product sheared length, be not inconsistent, in time regulate fixed ruler baffle if having.
During normal the shearing,, measure the finished product cut lengths, be not inconsistent, in time adjust fixed ruler baffle if having with the steel ring chi every half an hour.
During normal the shearing, check every half an hour whether cutter and bottom knife contact well, blade clearance, shearing number (by the trade mark, specification) should meet when on the finished product face of showing after 5-1 finds to shear elbow and other defective being arranged, must adjust the distance that goes up bottom knife or change blade, the distance between the last bottom knife is the 3-6% that is sheared material height.
The rolling of steel of the present invention is rolled steel billet by duo mill, and adopted the groove rolling method, and product category is few, helps improving production technology level and its professional speciality of performance, thereby reaches the purpose of high yield, high-quality, low consumption; Save the energy, reduced environmental pollution, greatly reduced production cost and equipment investment cost, and effectively improved the production efficiency of utilization rate of equipment and installations and steel rolling, had output height and advantages of saving energy and reducing emission, be suitable for extensive centralized production.
Description of drawings:
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is a flow chart of the present invention.
The specific embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment:
A kind of production technology procedures for steel rolling of the present invention is subjected to roll shop building extruding to make its plastic deformation the metal and the steel rolling that generates, and its technological process is: blank prepares 1, rolling 3, the finishing of the heating 2 of steel, steel and warehouse-in 4; In the present invention, the purpose of blank heating is to improve plasticity to reduce resistance of deformation, so that rolling.In steel rolling, steel billet is rolled by duo mill, and the collocation form that this duo mill adopts is a continous way, and aspects such as its productivity ratio and quality are all superior than other modes.Wherein, the rolled steel kind is the HRB335 of armored concrete in the hot rolled ribbed steel bar, and specification is Φ 10mm～Φ 25mm, is present domestic the most common steel for building, its product requirement any surface finish, size is accurate, mechanical property good, and meets the steel of GB1499.2-2007.In the present embodiment, vertical hot rolling that steel rolling is adopted, promptly rolled object---rolled piece, when being heated to 1100～1250 ℃, the milling method that the roll that steel billet rotates by two rightabouts obtains processing is modal a kind of milling method during steel rolling is produced.
In order to elaborate the technological process of this enforcement,, specifically be described below in conjunction with Fig. 1:
Continuous casting billet is done through supply and is checked and accepted quantity and supplier's certificate of quality postscript notice matter pipe and process a proposal and report the results back to the sponsor and test chemical analysis and surface quality and assembly, is cut into the length and the finishing of technology defined behind the assembly; The scale blank is sent to two sections continuous-type furnaces of coal gas by heating workshop section by the charging of stove lot number and is heated to 1100-1200 ℃ of tapping; (through steel rolling workshop section) delivers to φ 450 * 1 machines row by rollgang, after the roughing 7-9 passage, deliver to 100T/160T hot shears crop by rollgang, after rolling 4 passages during the machine of delivering to again is listed as, through back-end crop and in good time sampling observation K9 qualifying point, rolled piece is transported to φ 320 * 4/ φ 320 * 2/ φ 320 * 2 machine row tandem rolling multi-pass (by technological requirement) and goes out finished product and inspect the K1 qualifying point in good time by random samples, the finished product rolled piece that is come out by the K1 hole enters walking beam cooler through Double Dimension Flying Shears by rollgang, and (8m * 66m) cooling naturally carries out heat simultaneously and examines.Be sent to 250 tons of cutters after (through finishing department) check the finished product material is cut into scale, deliver to check packaging platform (product inspection) by rollgang again and carry out being transplanted on electronic loadometer metering back packing after the product inspection, the lifting warehouse-in of listing.
Its detailed concrete steps are as follows:
1, the preparation of blank.
In the present embodiment, the preparation of this blank comprises that blank is checked and accepted and the operating process of blank cutting trimming; After blank is qualified by inspection, produces to do and be responsible for assembly and fill in " assembly list " entering blank cutting trimming operation in company with blank.
Described blank is 120 * 120～150 * 150 sides' a continuous casting steel billet, requires the continuous casting steel billet removing surface in blank is prepared, and defective method for cleaning commonly used is scafing.As find the billet surface defectiveness to require to rebuild in accordance with regulations with portable abrasive machine, when removing the continuous casting steel billet surface, it removes width must not be less than 6 times of the degree of depth, and length must not be less than 10 times of the degree of depth.Trimming back rejected region should slick and sly, no corner angle.Trimming degree of depth single face must not be removed degree of depth sum greater than 8%, two opposite face of the continuous casting billet length of side must not be greater than 12% of thickness.
2, the heating of steel.
The purpose of the heating of steel is to improve plasticity to reduce resistance of deformation, so that rolling, its technological process is:
(1) blank is gone into stove, and ready blank is joined in the heating furnace by pusher, if find that steel billet drops, should stop to push away steel immediately and in time handle.Among the present invention, this pusher technical performance parameter is: thrust: 200 tons, and stroke: 2000mm, fluid pressure type pushes away speed: 70mm/s.Concrete technological operation requires rules as follows:
(A), checking the number of steel billet and stove lot number hangs in and adds the steel rider road.
(B), add and check pusher ruuning situation before the steel, treat normal after just standard add steel.
(C), to discharge neatly when adding steel, centring leaves the space between the two ends of steel billet and the furnace wall, each side should be about 150mm.Be strictly on guard against that steel billet turns over steel, wipes wall, encircles steel.As crooked steel billet, flexure plane should upwards discharge.
Whether should often observe steel billet when (D), adding steel wanders off in stove.
(E), when changing the stove lot number, on the last root steel billet of a last stove lot number, old refractory brick is set, carry out, notify the tapping operation by adding the steel worker every sign.
(F), conscientiously fill in " heat (batch) number transmission single ", and be delivered to subsequent processing.
(2) blank heating, the batching that is added in the stove by step (1) heats by heating furnace according to blank heating system and heat time heating time; Wherein, in blank heating, its process also comprises preheating section and bringing-up section; In these two heating processes, as shown in table 1 to blank heating system and heat time heating time,
Table 1
The present invention correctly controls the heating-up temperature of steel by the requirement of heating-up temperature system, also will guarantee steel billet simultaneously along having a narrow range of temperature on length and the section, and temperature is even.Too high firm temperature increases hear rate and oxidation, easily cause to add thermal defect and steel bonding, but the steel temperature is low excessively, also can increase power consumption, easily causes the rolling equipment accident, therefore will rationally control furnace temperature.The correct heating-up temperature of determining steel generally can be passed through instrument measurement tapping temperature and furnace temperature, but the indicated temperature of instrument generally is the furnace gas temperature of several test points in the stove, and certain limitation is arranged.
(3) blank tapping, blank are generated as steel billet after through step (2) heating, when the staff receives milling train notice tapping signal, meet start rolling temperature promptly 1100～1200 ℃ the time just standard tap by extractor by the stove lot number.When milling train is normally tapped signal, should in time tap.Tapping should be looked milling train rhythm and the balanced tapping of steel temperature situation, avoids milling train to treat the steel phenomenon as far as possible.When present embodiment used the extractor tapping, the big gun bar will be aimed at blank, forbade to tilt discharging; After the big gun bar is released stove with blank, should immediately the big gun bar be return outside the stove,, will put in place when returning, master controller is returned zero-bit, not allow the big gun bar stayed in the fire door and toast in order to avoid burn out or deform; Want the ruuning situation of close observation steel billet in stove during tapping, note abnormalities or when phenomenons such as steel bonding, steel-fastening are arranged, should stop to push away steel immediately, and in time notify the relevant personnel to handle, ban the use of that push rod is answered back to or traversing material toggling.
In addition, the firing equipment that adopts in the present embodiment is two sections continuous furnaces of right coal gas, it is a kind of a kind of firing equipment that lags behind walking beam furnace, saved production cost, in right two sections continuous furnaces of coal gas, thermocouple automatic temperature measurement instrument and self-balancing recorder are installed, be used to measure the heating index that adds in the stove, guarantee the heating-up temperature of blank.
3, steel is rolling.
In the operation of rolling of steel, necessary crop of rolled piece and back-end crop are so that carry out the operation of rolling smoothly.The crop of finished product, back-end crop and cut-out mainly are the cut lengths in order to excise the steel two irregular parts of distortion and to obtain to stipulate.It is concrete, and successively step is as follows;
(a) roughing, the steel billet that obtains in the heating operation by steel meet start rolling temperature and deliver to Φ 450 roll mills by rollgang again and carry out roughing 7-9 passage; Rolled piece produces the first-class defective of blooming end to end, and influence is nipped, for the tandem rolling that guarantees Φ 320 machines row normally carries out, and must be through crop, back-end crop.
(b) crop by the steel billet that step (a) obtains, is delivered to hot shears by rollgang again and is carried out crop; In the present embodiment, shearing equipment commonly used is metal-slitting machine and blade type cutter, and its shearing force is 100～160 tons.
(c) roll in,, deliver to again in the Φ 350 machines row and roll 4 passages by the steel billet that step (b) obtains.
(d) back-end crop by the steel billet that step (c) obtains, is being cut by 100～160 tons lock by root shearing afterbody, thereby is being finished rolling whole process.
In this example, also to lead the position and install and adjust operation, guide and guard are fixing on crossbeam, aim at pass, and the guide and guard installation should be aimed at groove and be kept consistent with roll line, and fixing wanting firmly, head (the tip of the tongue) should be measured near the groove edge, but must not run into roll, and its clearance gauge is decided to be inlet guide: roughing 5-10mm, in roll 3-6mm, finish rolling 2-3mm; Delivery guide: roughing 2-3mm, in roll 1-2mm, finish rolling 0.5-1mm.
What deserves to be mentioned is that the start rolling temperature scope of the best in the operation of rolling is 1100-1200 ℃, the finishing temperature scope is 850-950 ℃; Finishing temperature is controlled at more than the recrystallization temperature and is rolled, and resistance of deformation reduces, and energy consumption therefore reduces, and has guaranteed mechanical performance of products.Finishing temperature is controlled at more than the recrystallization temperature is rolled, resistance of deformation reduces, and energy consumption therefore reduces, and has guaranteed mechanical performance of products.
It should be noted that in conversion product specification, roll change, change under the situation such as groove, must roll the proof operation of rolling through examination.Before examination is rolled, check each equipment operation condition of production line, wait to move when normal, just can try to roll proof.When examination is rolled, roll smallclothes by the groove examination, whether the red base appearance and size of each passage of close inspection meets the process regulation, if do not meet, in time adjusts, and carries out ordinary production up to the mutatis mutandis aniseed of red base ability up to specification.
4, finishing and warehouse-in.
In the finishing of steel and warehouse-in operation, also comprise Double Dimension Flying Shears and heat inspection, cold bed cooling, scale cooling, product inspection, metering is wrapped greatly and the warehouse-in workflow of listing.Wherein, Double Dimension Flying Shears and heat inspection technological operation rules are, before finished product rolled piece K1 comes out to enter cold bed in the hole, become multiple lengths by the stove lot number by the root flying shear, and this multiple lengths is the multiple of 9 meters or 12 meters, and then, entering next operation is the cold bed cooling.
The cold bed that this example adopts is 8m * 66m walking beam cooler, and when finished product entered cold bed, dresser must be with red steel by straight concordant spreading out, and alignment in the time of must taking advantage of high temperature if any curved bar avoids the rolled piece surface to draw together wound.Defective finished product rolled piece abnormal type is cooled to recheck below 300 ℃.The finished product rolled piece was checked appearance and size and surface quality by the stove lot number every 15-30 minute when cold bed naturally cools to below 300 ℃, handle defective work is atypical.
As preferably, it is 250 tons cutter as shearing force that finished product is sheared the shearing equipment that uses, the finished product shearing technological operation rules of using:
A, whether checkout facility is normal when succeeding, and oily;
B, inspection fixed ruler baffle are placed distance and whether are met finished product sheared length regulation;
9 meters of b-1, finished product cut lengths,
B-2, decide according to the user is required.
C, by the stove lot number shear, sheared length is 9 meters scales, permissible variation is 0-+50mm, never allowed minus deviation.
D, end reinforcedly should shear honestly, local deformation should not influence use.Shear the steel ruler of usefulness 〉=10m first and measure the finished product sheared length, be not inconsistent, in time regulate fixed ruler baffle if having.
E, when normally shearing,, measure the finished product cut lengths, be not inconsistent, in time adjust fixed ruler baffle if having with the steel ring chi every half an hour.
F, when normally shearing, check every half an hour whether cutter and bottom knife contact well, blade clearance, shearing number (by the trade mark, specification) should meet when on the finished product face of showing after 5-1 finds to shear elbow and other defective being arranged, must adjust the distance that goes up bottom knife or change blade, the distance between the last bottom knife is the 3-6% that is sheared material height.
Till g, crop, back-end crop must be cut to the greatest extent in accordance with regulations.
In addition, finished product warehouse-in comprises product inspection, the metering warehouse-in that wraps greatly and list, and shears the back finished steel and will evenly tile on the check packaging platform, check finish after just standard tie in accordance with regulations and roll; Strictness is undertaken finished steel was checked appearance and size and surface quality by heat (batch) number by root every 15-20 minute by the GB1499-1998 national standard, checks the physical dimension and the cut lengths of finished steel with slide measure, steel tape.Finished steel appearance and size surface quality is pressed GB1499-1998 regulation batch inspection chemical analysis and mechanical test through after the assay was approved, and qualified products roll according to GB GB1499-1998 regulation bundle, and the atypical stacking of substandard product also has distinguishing mark.
When changing heat (batch) number, should be rapidly the steel on the check packaging platform be tied to roll in accordance with regulations and hang up label and enter warehouse for finished product, and get the sign label of next stove to last process.
Warehouse for finished product warehouse-in technological operation rules:
(1) steel of having checked must not the number of mixing by the stove lot number warehouse-in that weighs.
(2) scale, the non-linear products warehouse-in that should weigh is respectively filled in the weight list branch and is analogized and put, and distinguishing mark is arranged.
Should distinguish order of classes or grades at school, heat (batch) number when (3) steel are put in storage, be forbidden to mix.
(4) all through the steel that are up to the standards, must identify by pertinent regulations.
(5) should get storage bill to the reviewer before the warehouse-in, appraise and decide through weighing and to put in storage, the inaccurate without exception warehouse-in of untested steel.
(6) all steel that can not in time put in storage must be by specification heat (batch) number classify and pile up, and distinguishing mark is arranged.
(7) defective not access warehouse for finished product.
The setting of Quality Control point among the present invention:
Steel billet be prepared as first Quality Control point, detect the chemical composition, appearance and size, surface quality of steel billet etc.; It is second Quality Control point that heating process, furnace temperature detect, and measures heating furnace high-temperature section temperature; The K9 passage is the 3rd quality inspection points, range estimation rolling temperature, the red base size of measurement; The K1 passage is the 4th quality inspection points, and the range estimation finishing temperature is measured red base size.When equipment moved, the staff should check once that K9, K1 Quality Control point per hour write down 1 time in per 30 minutes.
The rolling of steel of the present invention is rolled steel billet by duo mill, and adopted the groove rolling method, and product category is few, helps improving production technology level and its professional speciality of performance; Have that stand-by equipment is few, utilization rate of equipment and installations is high, small investment, output height and advantages of saving energy and reducing emission, be suitable for extensive centralized production; Production cost is low.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (9)
1, a kind of production technology procedures for steel rolling is subjected to roll shop building extruding to make its plastic deformation the metal and the steel rolling that generates, it is characterized in that its technological process is: blank is prepared, rolling, the finishing of the heating of steel, steel and warehouse-in; Further comprising the steps of in the heating operation process of described steel:
(1) blank is gone into stove, and ready blank is joined in the heating furnace by pusher;
(2) blank heating, the batching that is added in the stove by step (1) heats by heating furnace according to blank heating system and heat time heating time;
(3) blank tapping, blank when meeting start rolling temperature, are carried out the tapping program by extractor after heating through step (2).
2, a kind of production technology procedures for steel rolling according to claim 1 is characterized in that, and is further comprising the steps of in the operation of rolling of described steel:
(a) roughing, the steel billet that obtains in the heating operation by steel meets start rolling temperature and delivers to roll mill by rollgang again and carry out roughing 7-9 passage;
(b) crop by the steel billet that step (a) obtains, is delivered to hot shears by rollgang again and is carried out crop;
(c) roll in,, deliver to again in the machine row and roll 4 passages by the steel billet that step (b) obtains;
(d) back-end crop, the steel billet by step (c) obtains is pursuing root by shearing equipment.
3, a kind of production technology procedures for steel rolling according to claim 1 is characterized in that, also comprise in described finishing and the warehouse-in process Double Dimension Flying Shears and heat inspection, cold bed cooling, scale cooling, product inspection, metering is wrapped greatly and the warehouse-in of listing.
4, a kind of production technology procedures for steel rolling according to claim 1 is characterized in that, described step also comprises preheating section and bringing-up section in (2), and described preheating section is slowly heating, and be 90～120 minutes its heat time heating time, and heating-up temperature is 500～800 ℃; Described bringing-up section is a Fast Heating, and be 60～90 minutes its heat time heating time, and heating-up temperature is 1100～1300 ℃.
5, a kind of production technology procedures for steel rolling according to claim 2 is characterized in that, described roll mill is a duo mill.
6, a kind of production technology procedures for steel rolling according to claim 2 is characterized in that, described rolling in the process, and just the start rolling temperature of base is 1100-1200 ℃.
7, a kind of production technology procedures for steel rolling according to claim 4 is characterized in that, the heating furnace that is adopted in the described blank heating is two sections continuous-type furnaces of right coal gas.
8, a kind of production technology procedures for steel rolling according to claim 2 is characterized in that, the shearing equipment that adopts in the described step (b) is a cutter, and its shearing force is 100～160 tons.
9, a kind of production technology procedures for steel rolling according to claim 2 is characterized in that, the shearing equipment that is adopted in the described step (d) is that lock is cut, and its shearing force is 100～160 tons.
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| CN112387780A (en) * | 2020-06-09 | 2021-02-23 | 山东鲁丽钢铁有限公司 | Novel steel rolling production process |
| CN113624004A (en) * | 2021-08-09 | 2021-11-09 | 宝武集团鄂城钢铁有限公司 | Combustion control method during cold and hot mixed loading of heat accumulating type heating furnace and compact heat accumulating type heating furnace |
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2009
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| CN104415968B (en) * | 2013-08-28 | 2017-04-19 | 无锡桥联重工设计研究院有限公司 | Hot-rolling high-speed tool steel bar and wire producing process |
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| CN107537861A (en) * | 2016-06-27 | 2018-01-05 | 宝山钢铁股份有限公司 | The control method that a kind of slab hot sending examination is rolled |
| CN107030106A (en) * | 2017-04-28 | 2017-08-11 | 中冶东方工程技术有限公司 | Utilize the method for continuous small-size production line of bar type of production product made from steel |
| CN110033392A (en) * | 2019-03-07 | 2019-07-19 | 福建三钢闽光股份有限公司 | A kind of middle plate enters the online pre-judging method of furnace blank economization production in advance |
| CN111687208A (en) * | 2019-03-16 | 2020-09-22 | 山东鑫华特钢集团有限公司 | Square billet production and transformation process |
| CN110180891A (en) * | 2019-06-10 | 2019-08-30 | 成渝钒钛科技有限公司 | A kind of high stick lumber recovery method for improving |
| CN111020171A (en) * | 2019-12-18 | 2020-04-17 | 东北轻合金有限责任公司 | Method for heating aluminum alloy ingot casting by using continuous charging mode of push type heating furnace |
| CN111020171B (en) * | 2019-12-18 | 2021-08-13 | 东北轻合金有限责任公司 | Method for heating aluminum alloy ingot casting by using continuous charging mode of push type heating furnace |
| CN112387780A (en) * | 2020-06-09 | 2021-02-23 | 山东鲁丽钢铁有限公司 | Novel steel rolling production process |
| CN113624004A (en) * | 2021-08-09 | 2021-11-09 | 宝武集团鄂城钢铁有限公司 | Combustion control method during cold and hot mixed loading of heat accumulating type heating furnace and compact heat accumulating type heating furnace |
| CN114632817A (en) * | 2022-02-22 | 2022-06-17 | 南京钢铁股份有限公司 | Rolling method of wide and thick plate rolling mill |
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