CN104070063A - High-speed wire production process equipment - Google Patents
High-speed wire production process equipment Download PDFInfo
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- CN104070063A CN104070063A CN201310107701.0A CN201310107701A CN104070063A CN 104070063 A CN104070063 A CN 104070063A CN 201310107701 A CN201310107701 A CN 201310107701A CN 104070063 A CN104070063 A CN 104070063A
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Abstract
High-speed wire production process equipment comprises a heating furnace, a rough rolling unit, an intermediate rolling unit, a pre-finish-rolling unit, a finish rolling unit, a MINI unit, a wire discharger, and a finishing machine, which are connected in order. The high-speed wire production process equipment is characterized in that the MINI unit is composed of a frame-2 MINI reducing mill and a frame-2 MINI sizing mill; the MINI reducing mill and the MINI sizing mill are directly driven by two motors directly, and no shift mechanism or clutch mechanism is required. The high-speed wire production process equipment allows same-hole-type rolling, controlled rolling, and controlled cooling; motorized speed regulation of the MINI reducing mill and the MINI sizing mill allows speed matching for a whole production line; production speed ranges from 20m/s to 110m/s; the requirement for production of products phi 5.0mm-phi 25mm is met. Meanwhile, the high-speed wire production process equipment has the advantages of low cost, low equipment maintenance skill requirement, low maintenance difficulty and the like.
Description
Technical field
The present invention relates to a kind of high line steel rolling process, more specifically, relate to a kind of high-speed rod production process equipment.
Background technology
Current high-speed rod is produced and is mainly contained following two kinds of technique patterns:
1, heating furnace-roughing unit-intermediate mill-pre-finishing mill group-mm finishing mill unit-Laying head-finishing;
2, heating furnace-roughing unit-intermediate mill-pre-finishing mill group-mm finishing mill unit-reducing sizing mill group-Laying head-finishing;
The Main Differences of these two kinds of patterns is in finish rolling region, and traditional mm finishing mill unit is 10 frames, and product specification is φ 5.5mm ~ φ 16mm, dimensional accuracy ± 0.2mm; The production line that increases reducing sizing mill group, its mm finishing mill unit is 8 frames, reducing sizing mill group comprises reducing mill and sizing mill, product specification is φ 5.0mm ~ φ 25mm, and dimensional accuracy ± 0.1mm can realize controlled rolling and control cooling, same groove rolling, the technological abilities such as free sizing.
At present steel reinforced is mainly contained to two kinds of methods: alloy strengthening and refined crystalline strengthening.Alloy strengthening is to add alloy (as Si, Mn, V, Ti etc.).Refined crystalline strengthening adopts exactly controlled rolling and controls cooling technology, refinement steel crystal grain, reach the object that improves intensity and toughness, tradition rolled steel grain size is generally at 7 ~ 8 grades, the about 35um of crystallite dimension, adopt the steel grain size of " controlled rolling and control are cooling " explained hereafter can reach 12 ~ 13 grades, crystallite dimension 5 ~ 6um.
According to experimental study, belong to 35 steel and the controlled rolling of 45 steel process of (Q235+C) type Composition Design category, even if slow cooling also can obtain tiny ferrite+pearlitic structrure.Wherein, ferrite grain size can refine to 2～4 μ m, and quantity obviously exceedes equilibrium quantity.Can just produce high-level (500MPa and above rank) hot rolled ribbed bars by this result.
During high-speed rod is produced at present, use the production line of reducing sizing mill group to there is obvious advantage:
1, realize controlled rolling and control cooling (abbreviation controlled rolling and controlled cooling), its main feature has: (1) reduces billet heating temperature, energy-conservation and can also reduce decarburization, control crystallite dimension and can increase the rigidity of rolled piece through water-cooled section, reduce accident rate, improve operating rate of rolling mill, and created condition for low-temperature precise rolling, to produce higher-quality product; (2) obtain having the wire rod of best deformation characteristic; (3) obtain having the wire rod of uniform tissue and stability; (4) iron scale that wire surface generates is thin, is easy to pickling, to reduce pickling cost; (5) due to head, tail and the poker variations in temperature minimum of wire rod, performance is even, has reduced crop, the number of turns of back-end crop; (6), for thread wire, deformed bar, by temperature-controlled rolling and Controlled cooling process,, in the situation that increasing trace alloying element, does not improve its reinforced steel bar strength rank; (7) technology advanced person, production reliability is large, has very high utilization rate; (8) various production technology economic indicator advanced persons, energy consumption is low.
2, realize " same to groove rolling ".In order to produce all product specifications, 10 frame production line steel rolling processes need 3 cover passes to meet, and the production line that uses reducing sizing mill group will only be used a set of pass, all specifications all go out finished product from reducing sizing mill group, there is lot of advantages: produce spare part preparation amount and reduce, change specification time shorten, produce spare parts consumption amount and decline, production operation is simplified, and improves production line operation rate.
But the technical difficulty of reducing sizing mill group is very large, at present China does not have equipment supply ability, all needs import, yet only two of international suppliers: J. P. Morgan & Co. of Siemens and Italian Danieli Off Mecc.
Because reducing sizing mill group design need to adapt to the needs of all rolling specs, rolling mill practice has proposed very high technical conditions to equipment: according to production specification, finished product velocity interval is very wide, 10m/s ~ 120m/s unit need to be at very large speed adjustable range, in order to realize " same to groove rolling ", the speed between the frame of unit inside also has the ability of fine setting.J. P. Morgan & Co. of Siemens adopts a motor to drive, the transmission of an associating transfer gear box, the form of two frame reducing rolling mills and two frame precision mills.Associating transfer gear box is very complicated, comprises 16 root systems, 9 clutches, and gearbox always weighs 35.5 tons.Danieli Off Mecc of Italy adopts two motors to drive respectively reducing rolling mill and precision mill, and two kinds of milling trains are all used gearbox transmission, and gearbox has 3 gears, can realize gearratio configuration, and two gearbox weight are respectively 17.8 tons and 8.5 tons.
The equipment manufacturing cost of above two kinds of equipment is high, and the delivery cycle is long, and installation and debugging difficulty is large, and plant maintenance technical difficulty is large, and maintenance cost is high.And gearbox device structure complexity, operating mechanism is many, and plant maintenance technical requirement is high, and maintenance difficulties is large, and fault rate is high.
Summary of the invention
The present invention be directed to the deficiencies in the prior art, according to the feature of 10 frame mm finishing mill unit production lines and reducing sizing mill group production line, a kind of high-speed wire production line is provided, make it have controlled rolling and control coolingly and with the function of groove rolling, there is the features such as simple in structure, plant maintenance technical requirement is low, economy and durability simultaneously.
Technical scheme of the present invention is as follows:
A kind of high-speed rod production process equipment, comprise heating furnace, roughing unit, intermediate mill, pre-finishing mill group, mm finishing mill unit, MINI unit, Laying head, finishing, described heating furnace, roughing unit, intermediate mill, pre-finishing mill group, mm finishing mill unit, MINI unit, Laying head, finishing connects successively, it is characterized in that: described MINI unit is made up of 2 frame MINI reducing mills and 2 frame MINI sizing mills, MINI reducing mill and MINI sizing mill are respectively by two motor direct-drive, and without gearshift and clutch, mm finishing mill unit is 10 frames, 8 frames, or 6 frame.
Described pre-finishing mill group is cantilevered pre-finishing mill group, is provided with thereafter flying shear crop end.
Before described mm finishing mill unit, be provided with pre-water-cooling system, after mm finishing mill unit and MINI sizing mill, be equipped with closed loop water cooling system.After described Laying head, be provided with the air-cooled transporter that can control by a relatively large margin rolled piece temperature.
The process matching of described MINI reducing mill and MINI sizing mill inside adopts the mode of joining collars diameter to carry out.
Described MINI unit is made up of 2 frame MINI reducing mills and 2 frame MINI sizing mills, wherein, the transmission system of MINI reducing mill comprises motor, gear-box, driving gear, driven gear, roll mandrel, gear-box is connected with motor by 1# shaft coupling, driving gear is connected with gear-box by 2# shaft coupling, driving gear and driven gear sting mutually and, driven gear comprises 1# driven gear and 2# driven gear, lay respectively at the both sides of driving gear, wherein 1# driven gear is connected with 1# spiral bevel gear pair, 1# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis is changed into and level angle at 45 ° by horizontal direction, 1# bevel gear shaft is connected with respectively lazy axle and 1# bottom roll axle, the lazy axle of 1# is connected with 1# topping roll axle.2# driven gear is connected with 2# spiral bevel gear pair, 2# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 2# bevel gear shaft is connected with respectively the lazy axle of 2# and 2# bottom roll axle, and the lazy axle of 2# is connected with 2# topping roll axle.
The transmission system of described MINI sizing mill comprises motor, gear-box, driving gear, driven gear and roll mandrel, gear-box is connected with motor by 1# shaft coupling, 1# spiral bevel gear pair is connected with gear-box by 2# shaft coupling and driving gear, driving gear and driven gear sting mutually and, 1# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 1# bevel gear shaft is connected with respectively the lazy axle of 1# and bottom roll axle, and the lazy axle of 1# is connected with 1# topping roll axle.2# driven gear is connected with 2# spiral bevel gear pair, 2# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis is changed into and level angle at 45 ° by horizontal direction, and 2# bevel gear shaft is connected with respectively the lazy axle of 2# and 2# bottom roll axle, and the lazy axle of 2# is connected with 2# topping roll axle.
Beneficial effect of the present invention is as follows:
The present invention has realized " same to groove rolling ", MINI reducing mill and MINI sizing mill adopt electric machine speed regulation to realize whole production line speeds match, can speed of production scope can reach 20m/ ~ 110m/s, meet and produce φ 5.0mm ~ φ 25mm specification needs, the process matching of reducing mill and sizing mill inside adopts the mode of joining collars to carry out, with existing 10 frame production line comparisons: produce spare part preparation amount and reduce, change specification time shorten, producing spare parts consumption amount declines, production operation is simplified, and improves production line operation rate.Meet the needs of modern industry enterprise production management.The features such as meanwhile, it is low that the present invention also has cost, and plant maintenance technical requirement is low, and maintenance difficulties is little.
Brief description of the drawings
Fig. 1 is process chart of the present invention.
Fig. 2 is MINI reducing mill structural representation of the present invention.
Fig. 3 is MINI sizing mill structural representation of the present invention.
Fig. 4 is structural representation after MINI reducing mill of the present invention improves.
Fig. 5 is structural representation after MINI sizing mill of the present invention improves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
As shown in Figure 1, a kind of high-speed wire production line, comprise heating furnace, roughing unit, intermediate mill, pre-finishing mill group, mm finishing mill unit, MINI unit, Laying head, finishing, described heating furnace, roughing unit, intermediate mill, pre-finishing mill group, mm finishing mill unit, MINI unit, Laying head, finishing connect successively, MINI unit is made up of 2 frame MINI reducing mills and 2 frame MINI sizing mills, MINI reducing mill and MINI sizing mill be respectively by two motor direct-drive, and without gearshift and clutch.Wherein, mm finishing mill unit can be 10 frames, 8 frames, or 6 frame, before mm finishing mill unit, be provided with pre-water-cooling system, after mm finishing mill unit He after MINI unit, be provided with closed loop water cooling system, between mm finishing mill unit and MINI unit, be provided with flying shear crop end, after Laying head, be provided with the air-cooled transporter of Wind Volume blower fan, can control by a relatively large margin rolled piece temperature, realize " controlled rolling and control are cooling ".
In the present invention, the process matching of MINI reducing mill and MINI sizing mill inside adopts the mode of joining collars diameter to carry out.As shown in Figure 2, MINI unit is made up of 2 frame MINI reducing mills and 2 frame MINI sizing mills, wherein, the transmission system of MINI reducing mill comprises motor 1, gear-box 3, driving gear 5, driven gear, roll mandrel, gear-box 3 is connected with motor 1 by 1# shaft coupling 2, driving gear 5 is connected with gear-box 3 by 2# shaft coupling 4, driving gear 5 and driven gear sting mutually and, driven gear comprises 1# driven gear 6 and 2# driven gear 12, lay respectively at the both sides of driving gear 5, wherein 1# driven gear 6 is connected with 1# spiral bevel gear pair 7, 1# spiral bevel gear pair 7 is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 1# bevel gear shaft 8 is connected with respectively lazy axle 9 and 1# bottom roll axle 10, the lazy axle 9 of 1# is connected with 1# topping roll axle 11.2# driven gear 12 is connected with 2# spiral bevel gear pair 13,2# spiral bevel gear pair 13 is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 2# bevel gear shaft 14 is connected with respectively the lazy axle 15 of 2# and 2# bottom roll axle 16, and the lazy axle 15 of 2# is connected with 2# topping roll axle 17.
As shown in Figure 3, the transmission system of MINI sizing mill comprises motor 1, gear-box 2, driving gear 5, 2# driven gear 12 and roll mandrel, gear-box 3 is connected with motor 1 by 1# shaft coupling, 1# spiral bevel gear pair 7 is connected with gear-box 3 by 2# shaft coupling 4 and driving gear 5, driving gear 5 and 2# driven gear 12 sting mutually and, 1# spiral bevel gear pair 7 is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 1# bevel gear shaft 8 is connected with respectively the lazy axle 9 of 1# and bottom roll axle 10, the lazy axle 9 of 1# is connected with 1# topping roll axle 11.2# driven gear 12 is connected with 2# spiral bevel gear pair 13,2# spiral bevel gear pair 13 is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 2# bevel gear shaft 14 is connected with respectively the lazy axle 15 of 2# and 2# bottom roll axle 16, and the lazy axle 15 of 2# is connected with 2# topping roll axle 17.
As the further improvement of invention, can do following improvement to the drive mechanism of described MINI reducing mill:
As shown in Figure 4, driven gear comprises 1# driven gear 6 and 2# driven gear 12, gear-box 3 is connected with motor 1 by 1# shaft coupling 2, 2# driven gear 12 is connected with gear-box 3 by the bearing of 2# shaft coupling 4 and 2# spiral bevel gear pair 13, 1# driven gear 6 and 2# driven gear 12 sting mutually and, 2# spiral bevel gear pair 13 is connected with the 2# spiral bevel gear pair 13 that another one end is provided with 2# bevel gear shaft 14, two 2# spiral bevel gear pairs 13 are stung mutually and axis are changed into and level angle at 45 ° by horizontal direction, 2# bevel gear shaft 14 is connected with respectively the lazy axle 15 of 2# and 2# bottom roll axle 16, the lazy axle 15 of 2# is connected with 2# topping roll axle 17.
As the further improvement of invention, can do following improvement to the drive mechanism of described MINI sizing mill:
As shown in Figure 5, driven gear comprises 1# driven gear 6 and 2# driven gear 12, gear-box 3 is connected with motor 1 by 1# shaft coupling 2, 2# driven gear 12 is connected with gear-box 3 by the bearing of 2# shaft coupling 4 and 2# spiral bevel gear pair 13, 1# driven gear 6 and 2# driven gear 12 sting mutually and, 2# spiral bevel gear pair 13 is connected with the 2# spiral bevel gear pair 13 that another one end is provided with 2# bevel gear shaft 14, two 2# spiral bevel gear pairs 13 are stung mutually and axis are changed into and level angle at 45 ° by horizontal direction, 2# bevel gear shaft 14 is connected with respectively the lazy axle 15 of 2# and 2# bottom roll axle 16, the lazy axle 15 of 2# is connected with 2# topping roll axle 17.
Operation principle of the present invention is as follows:
Rolled piece arrives φ 350 milling trains through roughing unit, intermediate mill, then after the rolling of cantilevered pre-finishing mill group and mm finishing mill unit, is provided with flying shear crop end therebetween, and the rolled piece that cross dimensions and temperature are suitable enters MINI reducing mill and MINI sizing mill; Before mm finishing mill unit, be provided with pre-water-cooling system, after mm finishing mill unit He after MINI sizing mill, be provided with closed loop water cooling system, air-cooled transporter after Laying head is provided with the blower fan of Wind Volume, can control by a relatively large margin rolled piece temperature, thereby the production line of this technology arrangement is realized " controlled rolling and control are cooling ".
Two frames of MINI reducing mill are driven by an alternating-current variable frequency motor, gear-box and driving gear are delivered to power the driven gear of two frames, then adopt 45 ° of spiral bevel gear adjutant axis to be changed into and level angle at 45 ° by horizontal direction, bevel gear shaft and lazy axle are delivered to roll mandrel by power again, realize the motor power transmission at 45 ° to working position that level is installed, and realized the roll mandrel direction of rotation (being rolling direction) that steel rolling process needs.
Two frames of MINI sizing mill are driven by an alternating-current variable frequency motor, power is delivered to 1# rolling mill main moving gear by gear-box, then adopt 45 ° of spiral bevel gear adjutant axis to be changed into and level angle at 45 ° by horizontal direction, bevel gear shaft and lazy axle are delivered to roll mandrel by power again, realize the motor power transmission at 45 ° to working position that level is installed, and realized the roll mandrel direction of rotation (being rolling direction) that steel rolling process needs.
The main motor of transmission of MINI reducing mill and MINI sizing mill is alternating-current variable frequency motor, can meet production and adjust the requirement of mill speed on a large scale, and maximum speed and minimum speed differ and can reach 4.5 times, as 120m/s ~ 24m/s.The design of the collars diameter configuration of MINI reducing mill and MINI sizing mill can make all production specifications all go out finished product from MINI reducing mill and MINI sizing mill, and can make to feed the supplied materials size conforms pre-finishing mill group of MINI reducing mill and MINI sizing mill and the sections size of mm finishing mill unit, can realize " same to pass schedule " process function.
When use, according to production specification needs, can adjust gear box ratio and make motor speed and roll speeds match, can cancel MINI sizing mill.As produce screw wire rod and the not high product of production dimension precision requirement.Also can as required, configure two MINI reducing mills simultaneously.
The above embodiment has only expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. a high-speed rod production process equipment, comprise heating furnace, roughing unit, intermediate mill, pre-finishing mill group, mm finishing mill unit, MINI unit, Laying head, finishing, described heating furnace, roughing unit, intermediate mill, pre-finishing mill group, mm finishing mill unit, MINI unit, Laying head, finishing connects successively, it is characterized in that: described MINI unit is made up of 2 frame MINI reducing mills and 2 frame MINI sizing mills, MINI reducing mill and MINI sizing mill are respectively by two motor direct-drive, and without gearshift and clutch, mm finishing mill unit is 10 frames, 8 frames or 6 frames.
2. high-speed rod production process equipment according to claim 1, is characterized in that: described pre-finishing mill group is cantilevered pre-finishing mill group, is provided with thereafter flying shear crop end.
3. high-speed rod production process equipment according to claim 1, is characterized in that: before described mm finishing mill unit, be provided with pre-water-cooling system, after mm finishing mill unit and MINI sizing mill, be equipped with closed loop water cooling system.
4. high-speed rod production process equipment according to claim 1, is characterized in that: after described Laying head, be provided with the air-cooled transporter that can control by a relatively large margin rolled piece temperature.
5. high-speed rod production process equipment according to claim 1, is characterized in that: the process matching of described MINI reducing mill and MINI sizing mill inside adopts the mode of joining collars diameter to carry out.
6. high-speed rod production process equipment according to claim 1 or 5, it is characterized in that: the transmission system of MINI reducing mill comprises motor, gear-box, driving gear, driven gear, roll mandrel, gear-box is connected with motor by 1# shaft coupling, driving gear is connected with gear-box by 2# shaft coupling, driving gear and driven gear sting mutually and, driven gear comprises 1# driven gear and 2# driven gear, lay respectively at the both sides of driving gear, wherein 1# driven gear is connected with 1# spiral bevel gear pair, 1# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis is changed into and level angle at 45 ° by horizontal direction, 1# bevel gear shaft is connected with respectively lazy axle and 1# bottom roll axle, the lazy axle of 1# is connected with 1# topping roll axle, 2# driven gear is connected with 2# spiral bevel gear pair, 2# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 2# bevel gear shaft is connected with respectively the lazy axle of 2# and 2# bottom roll axle, the lazy axle of 2# is connected with 2# topping roll axle.
7. high-speed rod production process equipment according to claim 1 or 5, it is characterized in that: the transmission system of MINI sizing mill comprises motor, gear-box, driving gear, driven gear and roll mandrel, gear-box is connected with motor by 1# shaft coupling, 1# spiral bevel gear pair is connected with gear-box by 2# shaft coupling and driving gear, driving gear and driven gear sting mutually and, 1# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis can be changed into and level angle at 45 ° by horizontal direction, 1# bevel gear shaft is connected with respectively the lazy axle of 1# and bottom roll axle, the lazy axle of 1# is connected with 1# topping roll axle, 2# driven gear is connected with 2# spiral bevel gear pair, 2# spiral bevel gear pair is 45 ° of spiral bevel gear pairs, axis is changed into and level angle at 45 ° by horizontal direction, 2# bevel gear shaft is connected with respectively the lazy axle of 2# and 2# bottom roll axle, the lazy axle of 2# is connected with 2# topping roll axle.
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| CN201310107701.0A CN104070063B (en) | 2013-03-31 | 2013-03-31 | A kind of high-speed wire mill process equipment |
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| CN201310107701.0A CN104070063B (en) | 2013-03-31 | 2013-03-31 | A kind of high-speed wire mill process equipment |
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| CN104070063B CN104070063B (en) | 2016-10-12 |
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