CN214516738U - Short-stress continuous rolling unit for rolling round steel - Google Patents
Short-stress continuous rolling unit for rolling round steel Download PDFInfo
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- CN214516738U CN214516738U CN202023216824.2U CN202023216824U CN214516738U CN 214516738 U CN214516738 U CN 214516738U CN 202023216824 U CN202023216824 U CN 202023216824U CN 214516738 U CN214516738 U CN 214516738U
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Abstract
The utility model discloses a short stress continuous rolling unit for rolling round steel, belonging to the technical field of metal rolling, comprising eighteenth short stress rolling mills, a rolling procedure for preventing the round steel from falling off and a guiding device, wherein the eighteenth short stress rolling mill is a porous short stress rolling mill; at least one rolling mill between the first short stress rolling mill and the seventeenth short stress rolling mill is a porous short stress rolling mill, and the other rolling mills are non-porous short stress rolling mills. The utility model adopts the combination of the hole-free rolling and the hole-shaped rolling; the cross section size of a rolled piece is adjusted by changing the roll gap in the pass-free rolling, so that the product specification replacement rate is improved; the stress of the rolled piece is simplified, the deformation is uniform, and the iron scale can be effectively peeled off to improve the surface quality; the limited broadening is changed into free broadening, so that the rolling electric energy consumption can be reduced; the flat roller can reduce the consumption of the roller and the processing amount of the rolling groove, and can bring considerable economic benefit for a bar production line.
Description
Technical Field
The utility model belongs to the technical field of the rolling technique of metal and specifically relates to a short stress continuous rolling unit for rolling round steel.
Background
In the field of metal rolling, round steel is divided into three types, namely hot rolling, forging and cold drawing. The specification of the hot-rolled round steel is 5.5-250 mm, wherein: the small round steel of 5.5-25 mm is mostly supplied in the form of straight bar bundle, and is commonly used as reinforcing steel bar, bolt and various mechanical parts; the round steel with the diameter larger than 25mm is mainly used for manufacturing mechanical parts, tube blanks of seamless steel tubes and the like.
The round steel hot rolling is usually performed by continuously rolling flat steel by a rolling mill, and has a general specification of diameter 12mm, diameter 14mm, diameter 16mm, diameter 18mm, diameter 20mm, diameter 22mm, diameter 25mm, diameter 38mm, etc., and is performed by a grooved perforated rolling mill in a rough rolling, an intermediate rolling stand or a rolling mill train of small-sized materials.
The porous rolling mill mainly has the following defects: the energy consumption is large, the quality of finished products is poor, the yield is low, the accident probability is high, the repair of the roller is complex, the roller replacement and the groove replacement are troublesome, and the like.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a short stress continuous rolling unit for rolling round steel, which combines the hole-free rolling and the hole-shaped rolling; the cross section size of a rolled piece is adjusted by changing the roll gap in the pass-free rolling, so that the product specification replacement rate is improved; the stress of the rolled piece is simplified, the deformation is uniform, and the iron scale can be effectively peeled off to improve the surface quality; the limited broadening is changed into free broadening, so that the rolling electric energy consumption can be reduced; the flat roller can reduce the consumption of the roller and the processing amount of the rolling groove, and can bring considerable economic benefit for a bar production line.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a short stress continuous rolling unit for rolling round steel comprises eighteen short stress rolling mills, a rolling program for preventing the round steel from falling off and a guide device, wherein the eighteenth short stress rolling mill is a perforated short stress rolling mill; at least one rolling mill between the first short stress rolling mill and the seventeenth short stress rolling mill is a porous short stress rolling mill, and the other rolling mills are non-porous short stress rolling mills.
The utility model discloses technical scheme's further improvement lies in: the first short stress rolling mill to the twelfth short stress rolling mill are all hole-free type rolling mills, the thirteenth short stress rolling mill is a hole-type rolling mill, and the fourteenth short stress rolling mill to the seventeenth short stress rolling mill are all hole-free type short stress rolling mills.
The utility model discloses technical scheme's further improvement lies in: and the thirteenth short stress rolling mill and the eighteenth short stress rolling mill are both vertical roller short stress rolling mills.
The utility model discloses technical scheme's further improvement lies in: the first short stress rolling mill, the second short stress rolling mill, the third short stress rolling mill, the fourth short stress rolling mill, the fifth short stress rolling mill, the sixth short stress rolling mill, the seventh short stress rolling mill, the eighth short stress rolling mill, the ninth short stress rolling mill, the tenth short stress rolling mill, the eleventh short stress rolling mill, the twelfth short stress rolling mill, the fourteenth short stress rolling mill, the fifteenth short stress rolling mill, the sixteenth short stress rolling mill and the seventeenth short stress rolling mill are flat-roll short stress rolling mills.
The utility model discloses technical scheme's further improvement lies in: and a No. 1 flying shear is arranged between the sixth short stress rolling mill and the seventh short stress rolling mill.
The utility model discloses technical scheme's further improvement lies in: and 2# flying shears are arranged between the thirteenth short stress rolling mill and the fourteenth short stress rolling mill.
The utility model discloses technical scheme's further improvement lies in: and 3# flying shear is arranged after the eighteenth short stress rolling mill.
Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:
1. energy conservation: the utility model adopts 16 hole-free short-stress rolling mills to roll, which can obviously improve the operation rate of the rolling mills, thereby reducing the furnace shutdown time and reducing the fuel consumption of the heating furnace; during the non-hole type rolling, the deformation of a rolled piece is uniform, the additional stress generated in the rolled piece is small, and the effects of the side wall of a groove on the rolled piece and the friction force caused by the difference of the roller diameters at the periphery of the groove on the rolled piece are avoided, so that the rolling force is reduced by 5% -10% compared with the conventional hole type rolling, and the electric energy can be saved by about 7%.
2. The finished product has good quality: the utility model adopts the hole-free type short stress rolling mill to roll, which can avoid the quality defects caused by dislocation, deviation and overfilling of the rolling groove and the guide device during the hole type rolling; the non-pass rolling can make metal produce transverse movement, and is beneficial to updating the surface of a rolled piece, so that the defects of hairlines, cracks and the like on the surface of the rolled piece can be reduced, and the surface layer changes uniformly; the roll face has no speed difference and the relative slip on the metal-to-roll contact surface is much smaller than in the case of pass rolling, so that no wear dust of the rolls is pressed against the surface of the rolled piece, which is particularly advantageous for producing bars as wire-drawing blanks. Because the abrasive dust pressed on the surface of the rolled piece is the main cause of filament breakage.
3. The yield is high: the utility model adopts the hole-free short stress rolling mill to roll, the rolled piece is deformed evenly, so the length of the defect formed on the head and the tail of the rolled piece is greatly reduced, and the length of the head and the tail is shortened; can effectively save raw materials.
4. The accident is reduced: the utility model discloses a baffle and guard plate are simple when no pass short stress rolling mill is rolling, and their installation and adjustment require not strictly to the axial float of roll also has no influence to the rolled piece deformation, therefore rolling accident significantly reduces.
5. And (3) roller saving: the utility model discloses a when the rolling of no pass short stress rolling mill roll restoration simple, the roll leads a commonality strong, the spare amount significantly reduced of roll and lead a, rough rolling, well rolling respectively are equipped with two sets and just can maintain production, do not have slotted hole roll shaft can make full use of, reduce the amount of work of roll grooving, and roll turning is simple moreover, and the roll consumes fewly.
6. The time is saved: the utility model discloses a roll change, trade the groove simple when the rolling of no pass short stress rolling mill, operating time is few, improves the operation rate.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of a center hole-free roll according to the present invention;
fig. 3 is a schematic view of the roll with holes in the roll body of the present invention.
The rolling mill comprises a first short stress rolling mill, a second short stress rolling mill, a third short stress rolling mill, a fourth short stress rolling mill, a fifth short stress rolling mill, a sixth short stress rolling mill, a 7 seventh short stress rolling mill, a 8 eighth short stress rolling mill, a 9 ninth short stress rolling mill, a 10 tenth short stress rolling mill, a 11 eleventh short stress rolling mill, a 12 twelfth short stress rolling mill, a 13 thirteenth short stress rolling mill, a 14 fourteenth short stress rolling mill, a 15 fifteenth short stress rolling mill, a 16 sixteenth short stress rolling mill, a 17 seventeenth short stress rolling mill, a 18 eighteenth short stress rolling mill, and a rolling mill.
Detailed Description
The utility model discloses a to all rolling mills of continuous rolling unit among the prior art all adopt the energy resource consumption that porose type rolling mill exists big, the finished product quality is not good, the yield is low, the occurence of failure probability is big, the roll is restoreed complicacy, roll change trades the groove trouble and a short stress continuous rolling unit for rolling round steel of research and development design.
In rough rolling of small sections, in intermediate rolling stands or trains, flat rolling without grooves is used, which is called slotless rolling. The roll shown in fig. 2 is a non-grooved roll. The roll shown in fig. 3 is a grooved roll used in the prior art. Each short stress rolling mill comprises two rolls.
The present invention will be described in further detail with reference to the following drawings and embodiments:
as shown in fig. 1, a short stress continuous rolling mill train for rolling round steel comprises eighteenth short stress rolling mills, a rolling procedure for preventing the strip of the round steel and a guiding device, wherein an eighteenth short stress rolling mill 18 is a pass type short stress rolling mill; at least one rolling mill between the first short stress rolling mill 1 and the seventeenth short stress rolling mill 17 is a holed short stress rolling mill, and the other rolling mills are hole-free short stress rolling mills. The guide and guard device is designed to prevent the front and rear ends of the rolled piece from bending, twisting and dislocating deformation and scratching the surface of the rolled piece.
The first short stress rolling mill 1 to the twelfth short stress rolling mill 12 are all hole-free short stress rolling mills, the thirteenth short stress rolling mill 13 is a hole-free short stress rolling mill, and the fourteenth short stress rolling mill 14 to the seventeenth short stress rolling mill 17 are all hole-free short stress rolling mills.
The thirteenth short stress rolling mill 13 and the eighteenth short stress rolling mill 18 are both vertical roller short stress rolling mills.
The first short stress rolling mill 1, the second short stress rolling mill 2, the third short stress rolling mill 3, the fourth short stress rolling mill 4, the fifth short stress rolling mill 5, the sixth short stress rolling mill 6, the seventh short stress rolling mill 7, the eighth short stress rolling mill 8, the ninth short stress rolling mill 9, the tenth short stress rolling mill 10, the eleventh short stress rolling mill 11, the twelfth short stress rolling mill 12, the fourteenth short stress rolling mill 14, the fifteenth short stress rolling mill 15, the sixteenth short stress rolling mill 16 and the seventeenth short stress rolling mill 17 are all flat-roll short stress rolling mills.
And a 1# flying shear is arranged between the sixth short stress rolling mill 6 and the seventh short stress rolling mill 7.
A 2# flying shear is arranged between the thirteenth short stress rolling mill 13 and the fourteenth short stress rolling mill 14.
And 3# flying shears are arranged after the eighteenth short stress rolling mill 18.
In actual production, the roll gap of the hole-free roller can be designed according to the diameter specification of rolled round steel; the design of the roll procedure and the guide device for preventing the stripping can prevent the front end and the rear end of the rolled piece from being bent, twisted and stripped to deform and scratch the surface of the rolled piece.
Examples
Taking phi 20mm round steel as an example, the specification of square steel is 165mm by 165mm, and the length is 12 meters; the groove of the eighteenth short stress rolling mill is phi 20 mm; phi 20mm round steel finished products are 710 meters in total length, 9 meters are cut into 9 sections when being multiplied by a ruler, each section of the front 8 sections is 82 meters in length, and the tail end is 56 meters in length; when the length is 12 meters, the cut pieces are cut into 9 sections, the front 7 sections are 85 meters long, the 8 th section is 61 meters long, and the tail end is 54 meters long.
Now, taking a phi 600 roughing mill and a train with the roller body length of 700mm as an example, benefit analysis is carried out,
economic benefit comparison analysis table for hole-free rolling mill and hole-shaped rolling mill
As can be seen from the above table, by comparing the items and parameters of the rolling with the holeless rolling mill, it can be seen that the holeless short-stress rolling mill can roll 60 ten thousand tons of round steel, and the holeless short-stress rolling mill can roll 180 ten thousand tons of round steel under the same conditions. Therefore, the adoption of the hole-free type short stress rolling mill can generate considerable economic benefit.
To sum up, the utility model adopts the combination of the non-hole type rolling mill and the hole type rolling mill, and the non-hole type rolling mill adjusts the section size of the rolled piece by changing the roll gap, thereby improving the replacement rate of the product specification; the stress of the rolled piece is simplified, the deformation is uniform, and the iron scale can be effectively peeled off to improve the surface quality; the limited broadening is changed into free broadening, so that the rolling electric energy consumption can be reduced; the flat roller can reduce the consumption of the roller and the processing amount of the rolling groove, and can bring considerable economic benefit for a bar production line.
Claims (7)
1. The utility model provides a short stress continuous rolling unit for rolling round steel, includes eighteen short stress rolling mills, prevents the rolling procedure and the guide device of taking off the side, its characterized in that: the eighteenth short stress rolling mill (18) is a perforated short stress rolling mill; at least one rolling mill between the first short stress rolling mill (1) and the seventeenth short stress rolling mill (17) is a porous short stress rolling mill, and the other rolling mills are non-porous short stress rolling mills.
2. A short stress continuous rolling mill train for rolling round steel according to claim 1, characterized in that: the first short stress rolling mill (1) to the twelfth short stress rolling mill (12) are all hole-free short stress rolling mills, the thirteenth short stress rolling mill (13) is a hole-free short stress rolling mill, and the fourteenth short stress rolling mill (14) to the seventeenth short stress rolling mill (17) are all hole-free short stress rolling mills.
3. A short stress continuous rolling mill train for rolling round steel according to claim 1, characterized in that: the thirteenth short stress rolling mill (13) and the eighteenth short stress rolling mill (18) are both vertical roller short stress rolling mills.
4. A short stress continuous rolling mill train for rolling round steel according to claim 1, characterized in that: the first short stress rolling mill (1), the second short stress rolling mill (2), the third short stress rolling mill (3), the fourth short stress rolling mill (4), the fifth short stress rolling mill (5), the sixth short stress rolling mill (6), the seventh short stress rolling mill (7), the eighth short stress rolling mill (8), the ninth short stress rolling mill (9), the tenth short stress rolling mill (10), the eleventh short stress rolling mill (11), the twelfth short stress rolling mill (12), the fourteenth short stress rolling mill (14), the fifteenth short stress rolling mill (15), the sixteenth short stress rolling mill (16) and the seventeenth short stress rolling mill (17) are flat-roll short stress rolling mills.
5. A short stress continuous rolling mill train for rolling round steel according to claim 1, characterized in that: and a No. 1 flying shear is arranged between the sixth short stress rolling mill (6) and the seventh short stress rolling mill (7).
6. A short stress continuous rolling mill train for rolling round steel according to claim 1, characterized in that: a2 # flying shear is arranged between the thirteenth short stress rolling mill (13) and the fourteenth short stress rolling mill (14).
7. A short stress continuous rolling mill train for rolling round steel according to claim 1, characterized in that: and 3# flying shears are arranged after the eighteenth short stress rolling mill (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023216824.2U CN214516738U (en) | 2020-12-28 | 2020-12-28 | Short-stress continuous rolling unit for rolling round steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023216824.2U CN214516738U (en) | 2020-12-28 | 2020-12-28 | Short-stress continuous rolling unit for rolling round steel |
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| Publication Number | Publication Date |
|---|---|
| CN214516738U true CN214516738U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023216824.2U Active CN214516738U (en) | 2020-12-28 | 2020-12-28 | Short-stress continuous rolling unit for rolling round steel |
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