CN102179409A - Linear adjustment device for aligning transverse ribs of high-torque screw-thread steel - Google Patents
Linear adjustment device for aligning transverse ribs of high-torque screw-thread steel Download PDFInfo
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- CN102179409A CN102179409A CN 201110063500 CN201110063500A CN102179409A CN 102179409 A CN102179409 A CN 102179409A CN 201110063500 CN201110063500 CN 201110063500 CN 201110063500 A CN201110063500 A CN 201110063500A CN 102179409 A CN102179409 A CN 102179409A
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Abstract
The invention relates to a linear adjustment device for aligning transverse ribs of high-torque screw-thread steel, belonging to the technical field of steel rolling machinery. In the invention, a left adjustment disc and a right adjustment disc are adjusted to relatively rotate by adjusting a wedge to move up and down; the position of the wedge is fixed by an adjusting bolt when the left adjustment disc and the right adjustment disc are adjusted to needed angles so that the variation of an angle (phase) is generated between a left roll shaft sleeve and a left universal joint shaft which are respectively connected with the left adjustment disc and the right adjustment disc, and thus, the ultimate purpose of adjusting the relative angle (phase) between two rolls is ultimately achieved.
Description
Technical field
The present invention relates to a kind of high moment of torsion screw-thread steel cross rib and align linear regulation device, belong to the rolling machinery technical field.
Background technology
Finish rolling deformed bar is the external spiral that last century, the seventies was developed by former federal republic of germany.The reinforcing bar shape requirement can both connect with the connector that has supporting internal thread at any section, perhaps carries out anchoring with supporting nut.Left and right sides two parts screw thread of this finish rolling deformed bar is wire in the shape of a spiral, and promptly this finish rolling deformed bar can assemble as bolt is joined nut.Mainly having solved high strength cast iron can't Welding Problems, as GBT-20065-2006 spiral for prestressed concrete; Also solved a difficult problem of constructing, as mine anchoring under the coal mine at the scene that does not possess welding condition.
The core technology of finish rolling screw thread is: how on duo mill, realize two rolls along circumferential position adjustments that misplace continuously, thereby elimination from the reductor distributor box, universal-joint spindle, the fit-up gap to the whole driving-chain of roll axle sleeve.Thereby guarantee that rolling realization reinforcing bar two sides cross rib aligns a complete helix of formation.How rapidly and efficiently the two sides cross rib is adjusted to a complete helix, become the breach of efficient rolled threaded steel.
Chinese patent CN2756350 discloses the device that a kind of screw-thread steel cross rib forms helix, it is positioned at the mill train underdrive and connects on the axle assembly, and combine together with it, comprise parts such as connecing axis body 2, the axle sleeve 4 of being with internal spline, external spline 7, wherein connecing axis body 2, external spline 7 also is to form the part that underdrive connects axle assembly, its structural feature is: the next door, axle sleeve 4 terminations of band internal spline is provided with worm gear 6, be provided with two worm screws 5 symmetrically with worm gear 6 corresponding positions connecing on the axis body 2, worm screw 5 constitutes worm gears with worm gear 6; Worm gear 6 endoporus have identical internal spline with the axle sleeve 4 of band internal spline, and have constituted spline pair with external spline 7; Be with the axle sleeve 4 of internal spline and connect and be provided with expansion set 1 between the axis body 2.When milling train lists bottom roll cross rib cutting center line and do not overlap, rotary worm 5 can be regulated the relative angular displacement of bottom roll, and until cross rib cutting central lines, the screw-thread steel cross rib of having produced so just can form helix.The deficiency of this patent is: complex structure cost of manufacture height; Facts have proved: reach the standard grade when rolling at every turn, 4-5 attachment bolt need be unclamped, phase place is adjusted the time at least about 1 hour, wastes time and energy, and can not realize rapidly and efficiently regulating.
Chinese patent application CN101758082A discloses a kind of phase regulator with linear regulating function, and it is installed on the arbitrary transmission connecting shaft of mill train.Comprise left side adjustment dish on the mandrel 10 4 and right adjustment dish 5 in the middle of being fixed on, and two are adjusted pin 6; Left side adjustment dish 4 relies on attachment bolt 9 to connect with roll axle sleeve 3, and right adjustment dish 5 relies on attachment bolt 8 and universal-joint spindle 7 to be connected into one; Adjust pin 6 for two and be positioned at left and right adjustment dish junction, two adjustment dishes and middle mandrel 10 are formed revolute pair.When the milling train row two roll cross rib cutting neutral conductors do not overlap, adjust pin 6, left adjustment dish 4 can realize in 0-8 ° of circumference range that any linear forward and backward moves under two precessions of adjusting pins 6, force couple role that pine moves back.The deficiency of this patent application is: the main element of this adjuster driving torque is two ball stud pins, and contact area is little, not anti-ly stings steel drift and hits.When adjusting angle near extreme position, pin roof pressure force direction and axis direction depart from seriously, damage the pin screw thread easily.When superhigh intensity fining twisted steels such as production GBT-20065-2006 screw-thread steel PSB785 for prestressed concrete, PSB830, transmission failure appears easily, therefore can not adapt to large-scale production.
Summary of the invention
At the deficiencies in the prior art, the present invention proposes a kind of high moment of torsion screw-thread steel cross rib and aligns linear regulation device.This linear regulation device is simple in structure, and is easy to operate, but linear stepless is regulated and the degree of regulation height, does not produce any loosening inconsistent phenomenon in process of production, can produce continuously after once regulating the location, has significant effects for the production of finish rolling deformed bar.
Technical scheme of the present invention is as follows:
A kind of high moment of torsion screw-thread steel cross rib aligns linear regulation device, comprise left adjustment dish, right adjustment dish, middle mandrel and locking nut, described left adjustment dish and right adjustment dish link together by middle mandrel is cross one another, and middle mandrel axially is fixed between left adjustment dish and the right adjustment dish along middle mandrel by locking nut; It is characterized in that, be symmetrically arranged with two chock holes, be symmetrically arranged with two chock holes at the edge of right side adjustment dish at the edge of left side adjustment dish; In the chock hole that chock runs through to be arranged on left adjustment dish and the chock hole of right adjustment dish, the another one chock runs through in another chock hole of another chock hole that is arranged on left adjustment dish and right adjustment dish; Run through in the described chock and be provided with an adjusting bolt.
By accent uncage jack panel regulate left adjustment dish, right adjust coiling in the middle of the mandrel certain angle relatively rotate, this rotational angle is adjustable angle.
Described chock is the taper chock, and gradient is 1: 10.
The section configuration in described chock hole and the cross section of chock adapt, and being one group of opposite side is the square of circular arc.
The shape of chock and structure have guaranteed whether no matter two adjustment dishes rotate along middle mandrel, and it is the arc surface contact with contacting of chock hole, has increased the rigidity of system greatly, have overcome the point-like of other adjusters or the deficiency of wire contact.The present invention cooperates fixing left adjustment dish and right adjustment dish to relatively rotate angle by the axially-movable position of adjusting two chocks.
Be respectively arranged with slot on described left adjustment dish and the right adjustment dish.
The advantage that the present invention left side adjustment dish and right adjustment dish are provided with slot is, strengthens the bonding strength of two adjustment dishes and middle mandrel, the mechanical stability of lifting device running.
Be respectively arranged with keyway on described left adjustment dish and the right adjustment dish, the upper surface of left adjustment dish is fixedly linked by studs and key and left universal-joint spindle; The lower surface of described right adjustment dish is fixedly linked by studs and key and left roll axle sleeve.When two adjustment dishes relatively rotate, i.e. drive connects axle and the roll axle sleeve relatively rotates, and then reaches the purpose of control phase.
Described adjusting bolt is 10.9 grade high-strength outer-hexagonal bolts, nominal diameter 20mm, pitch 2mm, by two regulate the hanging into of bolts, pine moves back, regulate chock axial displacement, under force couple role, realize that left adjustment dish any linear forward and backward in 0-2.8 ° of circumference range is moving.
Regulate bolt-through and be arranged on the chock center, will be with one of silk to utilize fixed by nut on a left side adjustment dish during work, all the time chock is produced a pulling force that makes progress, act on two adjustment dishes after the curve slope amplification of this power by chock and chock hole.
Left side adjustment dish and right adjustment dish all adopt the 40CrMo modifier treatment, and case hardness is at HRC38-42; Middle mandrel adopts the modifier treatment of 45# forged steel, and case hardness is at HRC36-40; Chock adopts the 40CrMo modifier treatment, and case hardness is at HRC38-42.
The invention has the advantages that:
1, the present invention has eliminated the fit-up gap of screw-thread steel production equipment, realized a roll relatively another root roll circumference to the continuous dislocation adjustment of position.
2, of the present invention easy and simple to handle: operating personnel only need by the position of regulating chock realize a roll relatively another root roll circumference to the continuous dislocation adjustment of position, finally realize reinforcing bar up and down cross rib align fully, form continuous screw thread.
When 3, use was of the present invention, the on-the-spot adjusting time shortened greatly: only need just to realize the accurate adjusting of breaker roll position in short tens minutes, the production efficiency of Ti Gaoing is avoided damp production greatly, and phenomenons such as production link disengaging take place.
4, adjusting of the present invention is accurate: by the axially-movable of taper chock, be converted into small circumference angle adjustment, add and regulate bolt (M20 * 2), final formation adjusted 360 ° of the every rotations of screw thread, 4400 times of fine-tuning capabilities that the deflection of left side adjustment dish is 0.082 °, be the whenever mobile 2mm of bolt, the moving roll external arc deflection length L=0.25mm of dribbling is adjusted on a left side, realizes " fine setting " of real meaning; The long chock of 70mm moves in the dark cavity of 140mm, can realize the deflection arc length of 8.75mm.The present invention realizes transmitting " high pulling torque " and continuous " fine setting ", is particularly suitable for the rolling of superhigh intensity fining twisted steels such as GB/T20065-2006 screw-thread steel PSB785 for prestressed concrete, PSB830.
5, the yield rate of using the present invention to produce screw-thread steel significantly improves: because the taper chock is symmetrically distributed, a tight pine forms couple, and can to finish continuous linear forward and backward in 0-2.8 ° of circumference range around middle mandrel moving thereby promote left adjustment dish.And can form pretightning force, eliminate the adjusting play and sting steel drift and hit, no any loosening phenomenon in the production process can be produced yield rate height, suitable large-scale production after once regulating the location continuously.
6, the present invention compares with the tooth-like adjuster of the disclosed spline of Chinese patent CN2756350, and the swelling cover is not used in the moment of torsion transmission, does not need many fastening bolts of degree of tightness before and after circumferentially adjusting, and is rational in infrastructure, and it is quick convenient to adjust; The present invention compares with the disclosed adjustment pin of Chinese patent CN10758082A mode, and the moment of torsion transmission becomes the contact of bulb ball-and-socket point and contacts with the conical cavity face into cone, and contact area increases more than 6 times, and torque-transfer capability increases substantially; Adjust screw thread pair and do not transmit rolling torsion, also just avoided under the wide-angle user mode, pin roof pressure force direction and axis direction depart from when serious, bending pin or destroy the drawback appearance of screw thread.
Description of drawings
Fig. 1 is the structural representation of left adjustment dish of the present invention;
Fig. 2 is the structural representation of right adjustment dish of the present invention;
Fig. 3 is the structural representation of middle mandrel of the present invention;
Fig. 4 is the structural representation of chock of the present invention;
Fig. 5 is that chock of the present invention is assembled to the schematic diagram in the chock hole;
Fig. 6 is an adjustment schematic diagram of the present invention;
Fig. 7 is an assembling schematic diagram of the present invention;
Fig. 8 utilizes the present invention to regulate milling train, the structural representation of the screw-thread steel of producing;
Fig. 9 is a milling train operation principle sketch;
Figure 10 is the partial enlarged drawing of Fig. 9.
In Fig. 1-10,1, milling train left side roll; 2, the right roll of milling train; 3, left roll axle sleeve; 4, right roll axle sleeve; 5, linear regulation device; 6, left universal-joint spindle; 7, right universal-joint spindle; 8, gear distribution box; 9, left adjustment dish; 10, right adjustment dish; 11, middle mandrel; 12, locking nut and loosen pad; 13, chock hole; 14, chock; 15, regulate bolt; 16, nut; 17, keyway; 18, circular arc inclined-plane; 19, the direction of motion of chock; 20, the direction of rotation of left side adjustment; 21, the direction of rotation of right adjustment dish; 22, slot; 23, the direction of rotation of roll.
At Fig. 8 is the appearance and size of fining twisted steel; Wherein, dh-base circle diameter (BCD); The dv-base circle diameter (BCD); H-screw thread height (cross rib is risen); B-screw thread bottom width (cross rib bottom width); L-pitch (spacings between two cross ribs); The chamfering of r-cross rib root; A-lead angle (helical angle of cross rib).
The specific embodiment
Below by example and Figure of description the present invention is described in detail, but is not limited thereto.
Embodiment 1,
The present invention is selected to be installed on the left universal-joint spindle.
A kind of high moment of torsion screw-thread steel cross rib aligns linear regulation device 5, comprise left adjustment dish 9, right adjustment dish 10, middle mandrel 11 and locking nut 12, described left adjustment dish 9 and right adjustment dish 10 be by middle mandrel 11 cross one another linking together, and middle mandrel 11 axially is fixed between left adjustment dish 9 and the right adjustment dish 10 by locking nut 12 along middle mandrel 11; It is characterized in that, be symmetrically arranged with two chock holes 13, be symmetrically arranged with two chock holes 13 at the edge of right side adjustment dish 10 at the edge of left side adjustment dish 9; In the chock hole 13 that chock 14 runs through to be arranged on left adjustment dish 9 and the chock hole 13 of right adjustment dish 10, another one chock 14 runs through in another chock hole 13 of another chock hole 13 that is arranged on left adjustment dish 9 and right adjustment dish 10; Run through in the described chock 14 and be provided with an adjusting bolt 15.
Described chock 14 is the taper chock, and gradient is 1: 10.
The section configuration in described chock hole 13 and the cross section of chock 14 adapt, and being one group of opposite side is the square of circular arc.
Describedly on left side adjustment dish 9 and right adjustment dish 10, be respectively arranged with slot 22.
Be respectively arranged with keyway 17 on described left adjustment dish 9 and the right adjustment dish 10, the upper surface of left adjustment dish 9 is fixedly linked by studs and key and left universal-joint spindle 6; The lower surface of described right adjustment dish 10 is fixedly linked by studs and key and left roll axle sleeve 3.
Described adjusting bolt 15 is 10.9 grade high-strength outer-hexagonal bolts, specification is M20 * 2, be nominal diameter 20mm, pitch 2mm, by two regulate the hanging into of bolts, pine moves back, regulate chock axial displacement, under force couple role, realize that left adjustment dish any linear forward and backward in 0-2.8 ° of circumference range is moving.
Left side adjustment dish 9 and right adjustment dish 10 all adopt the 40CrMo modifier treatment, and case hardness is at HRC38-42; Middle mandrel 11 adopts the modifier treatment of 45# forged steel, and case hardness is at HRC36-40; Chock 14 adopts the 40CrMo modifier treatment, and case hardness is at HRC38-42.
Operation principle of the present invention:
The power of motor output is distributed to left universal-joint spindle 6 and right universal-joint spindle 7 through gear distribution box 8 equivalent, makes two universal-joint spindle rotating speeds identical and turn to relatively, direction as Fig. 9 23 shown in; Left then universal-joint spindle 6 passes to milling train left side roll 1 by linear regulation device 5, left roll axle sleeve 3 with moment of torsion; Right universal-joint spindle 7 is directly passed to the right roll 2 of milling train by right roll axle sleeve 4 with moment of torsion simultaneously.Can not form a complete helix if pass the reinforcing bar two sides cross rib of two rolls 1,2,, realize the phase adjusted between two rolls 1,2 so by the adjusting bolt in the linear adjustment adjusting device 5.
During adjustment, one on the left side adjustment dish 9 nut of regulating bolt 15 is tightened, the chock 14 that is attached thereto moves upward; Meanwhile, unclamp the nut of another adjusting bolt 15 on the left adjustment dish 9, the chock 14 that is attached thereto is moved downward, and then drive of direction of rotation 21 rotations of right adjustment dish 10, drive left adjustment dish 10 and rotate along the direction of rotation 20 of left adjustment dish along right adjustment dish; When being adjusted to the angle that needs, two on the left side adjustment dish 9 nuts of regulating bolt all to be tightened, two adjustment dishes its relative position under the dual extruding of two chocks just is fixed on the position that regulates firmly.Because left and right adjustment dish is fixedly linked with left roll axle sleeve 3 with left universal-joint spindle 6 respectively, thereby make the change that has produced an angle (phase place) between left roll axle sleeve 6 and the left universal-joint spindle 3, and then realize regulating the final purpose of relative angle (phase place) between two rolls.
Adjusting left adjustment dish 9, can to finish continuous linear forward and backward in 0-2.8 ° of circumference range around middle mandrel 11 moving.The present invention is by chock 14 (gradient 1: 10) axially-movable, be converted into small circumference angle adjustment, regulate 360 ° of bolt 15 every rotations, 0.082 ° of 10 deflection are coiled in the 9 right relatively adjustment of left side adjustment dish, promptly regulate the whenever mobile 2mm of bolt 15, left side adjustment dish 9 drives milling train left side roll 1 external arc deflection arc length 0.25mm, realizes " fine setting " of real meaning.The long chock of 70mm moves in the dark cavity of 140mm, can realize the deflection arc length of 8.75mm.
The course of work:
Utilize embodiment 1 described high moment of torsion screw-thread steel cross rib to align linear regulation device and produce GB/T20065-2006 screw-thread steel PSB830 for prestressed concrete finish rolling screw thread Φ 25 specifications, mill speed 12m/s, cross rib spacing (12 ± 0.3) mm, maximum adjusting range S=(12+0.3)/2=6.15mm only needs half to get final product.Roller diameter D=350mm, largest circumference is adjusted angle [alpha]=2.87 °.Then the maximum circular arc that adjusts of adjusting device is adjusted length L=α/360 * 3.14 * 350=8.75mm.Satisfy the requirement of technology adjustment amount (0-6.15) mm.Flat awl chock with about adjustment dish contact area do not change, it is unattenuated to transmit torque capability.
Reach the standard grade and produce 3000 tons of PSB830 finish rolling screw thread Φ 25 specifications, 30 minutes consuming time of the adjustment of first groove, efficient and convenient.Follow-up replacing groove carried out inching 10 minutes only consuming time at every turn, and heating furnace needn't stop to roll cooling.Whole rolling cycle adjusting device is stable, any skew does not take place damage, and shock-resistant ability is good.
Utilize embodiment 1 described high moment of torsion screw-thread steel cross rib to align linear regulation device and produce GB/T20065-2006 screw-thread steel PSB830 for prestressed concrete finish rolling screw thread Φ 32 specifications, mill speed 10m/s, cross rib spacing (16 ± 0.3) mm, maximum adjusting range S=(16+0.3) ÷ 2=8.15mm only needs half to get final product.Roller diameter D=470mm.The adjusting device largest circumference is adjusted angle [alpha]=2.87 °, and then maximum roll circular arc is adjusted length L=α/360 * 3.14 * 470=11.77mm under adjusting device drives.Satisfy the requirement of technology adjustment amount (0-8.15) mm.Flat awl chock with about adjustment dish contact area do not change, it is unattenuated to transmit torque capability.
Reach the standard grade and produce 1000 tons of PSB830 finish rolling screw thread Φ 32 specifications, first groove is adjusted 40 minutes consuming time, and is efficient and convenient.Follow-up replacing groove carried out inching 10 minutes only consuming time at every turn, and heating furnace needn't stop to roll cooling.Whole rolling cycle adjusting device is stable, any skew does not take place damage, and shock-resistant ability is good.
Claims (7)
1. one kind high moment of torsion screw-thread steel cross rib aligns linear regulation device, comprise left adjustment dish, right adjustment dish, middle mandrel and locking nut, described left adjustment dish and right adjustment dish link together by middle mandrel is cross one another, and middle mandrel axially is fixed between left adjustment dish and the right adjustment dish along middle mandrel by locking nut; It is characterized in that, be symmetrically arranged with two chock holes, be symmetrically arranged with two chock holes at the edge of right side adjustment dish at the edge of left side adjustment dish; In the chock hole that chock runs through to be arranged on left adjustment dish and the chock hole of right adjustment dish, the another one chock runs through in another chock hole of another chock hole that is arranged on left adjustment dish and right adjustment dish; Run through in the described chock and be provided with an adjusting bolt.
2. adjusting device as claimed in claim 1 is characterized in that, described chock is the taper chock, and gradient is 1: 10.
3. adjusting device as claimed in claim 1 is characterized in that, the section configuration in described chock hole and the cross section of chock adapt, and being one group of opposite side is the square of circular arc.
4. adjusting device as claimed in claim 1 is characterized in that, describedly is respectively arranged with slot on left side adjustment dish and right adjustment dish.
5. adjusting device as claimed in claim 1 is characterized in that, is respectively arranged with keyway on described left adjustment dish and the right adjustment dish, and the upper surface of left adjustment dish is fixedly linked by studs and key and left universal-joint spindle; The lower surface of described right adjustment dish is fixedly linked by studs and key and left roll axle sleeve.
6. adjusting device as claimed in claim 1, it is characterized in that, described adjusting bolt is 10.9 grade high-strength outer-hexagonal bolts, nominal diameter 20mm, pitch 2mm, by two regulate the hanging into of bolts, pine moves back, and regulates chock axial displacement, under force couple role, realize that left adjustment dish any linear forward and backward in 0-2.8 ° of circumference range is moving.
7. adjusting device as claimed in claim 1 is characterized in that, left adjustment dish and right adjustment dish all adopt the 40CrMo modifier treatment, and case hardness is at HRC38-42; Middle mandrel adopts the modifier treatment of 45# forged steel, and case hardness is at HRC36-40; Chock adopts the 40CrMo modifier treatment, and case hardness is at HRC38-42.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063500A CN102179409B (en) | 2011-03-16 | 2011-03-16 | Linear adjustment device for aligning transverse ribs of high-torque screw-thread steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110063500A CN102179409B (en) | 2011-03-16 | 2011-03-16 | Linear adjustment device for aligning transverse ribs of high-torque screw-thread steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102179409A true CN102179409A (en) | 2011-09-14 |
| CN102179409B CN102179409B (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110063500A Expired - Fee Related CN102179409B (en) | 2011-03-16 | 2011-03-16 | Linear adjustment device for aligning transverse ribs of high-torque screw-thread steel |
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| CN (1) | CN102179409B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458141A (en) * | 2021-07-15 | 2021-10-01 | 首钢长治钢铁有限公司 | Finish rolling deformed steel bar rolling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1201535A (en) * | 1967-04-04 | 1970-08-05 | Ilseder Huette | Rolling mill having a pair of spindles situated between a pinion stand and a pair of rolls |
| SU721134A1 (en) * | 1977-01-05 | 1980-03-18 | Пермское Специальное Проектно-Конструкторское И Технологическое Бюро Министерства Промышленности Строительных Материалов | Stand for rolling radiator panels |
| CN2756350Y (en) * | 2004-09-09 | 2006-02-08 | 中冶华天工程技术有限公司 | Device for forming spiral line on screw thread steel lateral rib |
| CN101758082A (en) * | 2009-12-28 | 2010-06-30 | 莱芜钢铁股份有限公司 | Phase regulator with linear regulating function |
| CN202070706U (en) * | 2011-03-16 | 2011-12-14 | 莱芜钢铁股份有限公司 | A high torque deformed steel bar transverse rib alignment linearity adjusting device |
-
2011
- 2011-03-16 CN CN201110063500A patent/CN102179409B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1201535A (en) * | 1967-04-04 | 1970-08-05 | Ilseder Huette | Rolling mill having a pair of spindles situated between a pinion stand and a pair of rolls |
| SU721134A1 (en) * | 1977-01-05 | 1980-03-18 | Пермское Специальное Проектно-Конструкторское И Технологическое Бюро Министерства Промышленности Строительных Материалов | Stand for rolling radiator panels |
| CN2756350Y (en) * | 2004-09-09 | 2006-02-08 | 中冶华天工程技术有限公司 | Device for forming spiral line on screw thread steel lateral rib |
| CN101758082A (en) * | 2009-12-28 | 2010-06-30 | 莱芜钢铁股份有限公司 | Phase regulator with linear regulating function |
| CN202070706U (en) * | 2011-03-16 | 2011-12-14 | 莱芜钢铁股份有限公司 | A high torque deformed steel bar transverse rib alignment linearity adjusting device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458141A (en) * | 2021-07-15 | 2021-10-01 | 首钢长治钢铁有限公司 | Finish rolling deformed steel bar rolling method |
| CN113458141B (en) * | 2021-07-15 | 2022-05-27 | 首钢长治钢铁有限公司 | Finish rolling deformed steel bar rolling method |
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| CN102179409B (en) | 2012-09-05 |
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