CN103028601A - Continuous rolling and continuous roller forming method and device thereof - Google Patents
Continuous rolling and continuous roller forming method and device thereof Download PDFInfo
- Publication number
- CN103028601A CN103028601A CN2011103019966A CN201110301996A CN103028601A CN 103028601 A CN103028601 A CN 103028601A CN 2011103019966 A CN2011103019966 A CN 2011103019966A CN 201110301996 A CN201110301996 A CN 201110301996A CN 103028601 A CN103028601 A CN 103028601A
- Authority
- CN
- China
- Prior art keywords
- roll
- tandem
- rolling
- manufacturing process
- adopts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 7
- 238000013000 roll bending Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/08—Bending by altering the thickness of part of the cross-section of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
- B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a continuous rolling and continuous roll forming method and device for a transverse continuous variable-thickness profile, belongs to the field of roll bending forming technology and equipment, and is used for forming the transverse continuous variable-thickness roll bending profile along the opposite plate rolling direction. The method combines roll forming and roll bending forming, and the device comprises: the device comprises a machine base, a machine frame, a roller group, a roller shaft and a driving mechanism thereof, a guide roller and a leveling device. The invention has the advantages of capability of continuously producing the transverse continuously variable-thickness roll bending section with high efficiency and high quality, strong adaptability and convenient use.
Description
Technical field
The present invention relates to a kind of tandem-rolling continuous roller manufacturing process and device thereof of horizontal continuous variable thickness section bar, belong to roll forming technology and apparatus field, the relatively horizontal continuous variable thickness roll bending section bar of plate rolling direction of edge is used for being shaped.
Background technology
Studies show that at present: as the lightweight structure material based on the new material process technology, the continuous variable thickness rolled sheet is compared with laser assembly solder plate, the continuous variable thickness rolled sheet has obvious advantage at aspects such as weight loss effect, mechanical performance, adaptability, thickness optimization distribution, sectional curve variation, following process reliabilities, has fabulous application prospect.
The continuous variable thickness rolled sheet is divided in practice along horizontal Varying Thickness Plates and the longitudinal variable-thickness plate of relative plate rolling direction.At present, correlative study both domestic and external mainly concentrates on the rolling mill practice and forming property thereof of longitudinal variable-thickness plate, research institution also mainly concentrates on the metal forming research institute of Aachen, Germany polytechnical university (institute of metal forming, IBF) of initial exploitation longitudinal variable-thickness plate and other research institutions of continuous variable thickness rolled sheet joint study problem is arranged with it.And the research that is shaped for horizontal Varying Thickness Plates, research institution not yet gives more concern both at home and abroad, and pertinent literature also lacks very much.
Summary of the invention
Purpose of the present invention is exactly that design is a kind of for edge relatively tandem-rolling continuous roller manufacturing process and the device of the horizontal continuous variable thickness section bar of plate rolling direction of being shaped.This manufacturing process combines roll forming and roll forming, can produce continuously, efficiently, in high quality the continuous variable thickness section bar, and strong adaptability is easy to use.
The present invention solves its technical problem and can be achieved through the following technical solutions:
A kind of tandem-rolling continuous roller manufacturing process of horizontal continuous variable thickness section bar is characterized in that, sheet material is carried out local rolling attenuate by the some groups of roll stacks that are comprised of roll staggered relatively up and down in turn, becomes horizontal continuous variable thickness rolled sheet behind the sheet material attenuate; Multi-step forming roll by arranged in order carries out transverse curvature again, finally is processed into the horizontal continuous variable thickness section bar in desirable cross section.
In such scheme, roll forming, roll forming all can be divided into several passages as required; In the roll forming, according to the shape that Cross section Design requires, roll mandrel can assemble several rolls.
The device of a kind of horizontal continuous variable thickness section bar of realizing according to said method, formed by support, frame, roll stacks, roll mandrel and driving mechanism thereof, guide roller, straightening device, it is characterized in that described roll stacks is by topping roll and bottom roll or the plain-barreled roll of correspondence form with it; Described roll mandrel is divided into upper and lower roll mandrel, and roll is installed on the roll mandrel; Described guide roller is installed in the sheet material both sides after every a time of roll forming; Described straightening device is comprised of upper and lower leveling roller staggered relatively.
In such scheme, according to the different designs requirement of sheet material cross sectional shape, can select to install roll or plain-barreled roll at the bottom roll axle.If at the bottom roll axle roll is installed, the upper and lower surface that then is shaped is the Varying Thickness Plates of attenuate simultaneously; If at the bottom roll axle plain-barreled roll is installed, the upper surface attenuate that then is shaped, the Varying Thickness Plates that lower surface is smooth.
In such scheme, upper and lower roll mandrel be arranged in parallel and is installed on the machine frame at two sides; Upper and lower roll mandrel links to each other with the 45KW-630KW alternating-current variable frequency motor through decelerator, shaft coupling respectively.
Can find out its beneficial effect by technical solutions according to the invention:
1, tandem-rolling continuous roller manufacturing process of the present invention is compared to the conventional roll o ing, and the formed product mechanical performance is better, and weight loss effect is obvious and more energy-efficient;
2, the present invention is reasonable in design, compact overall structure, and production equipment is simple, investment is relatively few, but the material of converted products is diversified, thus adapt to the many-sided demand in market.
Description of drawings
Fig. 1 is the overall schematic of tandem-rolling continuous roller shaping scheme of the present invention;
Fig. 2-A is the structural representation that device bottom roll axle of the present invention is installed roll;
Fig. 2-B is the structural representation that device bottom roll axle of the present invention is installed plain-barreled roll;
Fig. 3-A is sheet material schematic cross-section before the embodiment roll forming of the present invention;
Fig. 3-B is sheet material schematic cross-section behind the embodiment roll forming of the present invention;
Fig. 4 is the roll forming roller floral diagram behind the embodiment roll forming of the present invention;
Fig. 5 is the final entity schematic diagram of embodiment of the present invention.
Among the figure: 1-rolls up base, 2-roll stacks one, 3-roll stacks two, 4-roll stacks three, 5-roll bending group one, 6-roll bending group two, 7-roll bending group three, 8-section bar finished product, 9-Varying-thickness rolled sheet, 10-leveling roller, the 11-guide roller, 12-frame, 13-frame plate washer, 14-baffle plate bolt, 15-bolts at axle end, the 16-spacer for bolt, 17-topping roll axle, 18-bearing one, 19-frame bolt, 20-topping roll, the 21-bottom roll, 22-key, 23-bearing two, 24-bottom roll axle, the 25-axle sleeve, 26-shaft coupling, 27-support, 28-plain-barreled roll.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described further.
As shown in Figure 1, tandem-rolling continuous roller shaping scheme of the present invention comprises roll stacks 1, roll stacks 23, roll stacks 34, roll bending group 1, roll bending group 26, roll bending group 37, leveling roller 10, guide roller 11.After the sheet metal uncoiling, sheet material passes through roll stacks 1, roll stacks 23, roll stacks 34 at first successively, carries out the local rolling attenuate of three passages; Carry out leveling by the straightening device that is formed by the two leveling rollers 10 of relatively placing again; Then pass through successively roll bending group 1, roll bending group 26, roll bending group 37, carry out the roll forming of three passages.
Fig. 2-A is the structural representation that device bottom roll axle of the present invention is installed roll.Among the figure, topping roll 20 is installed on the topping roll axle 17, and bottom roll 21 is installed on the bottom roll axle 24.Roll adopts key 22 to connect at roll mandrel, and adopts axle sleeve 25 to locate.Topping roll axle 17 two ends are secured on the frame 12 by folder is locked frame baffle plate 13 with baffle plate bolt 14 respectively; Bottom roll axle 24 is adopted and is fixed in the same way on the frame 12.Between the upper and lower roll 20 of manual adjustments, 21 apart from the time, need the baffle plate bolt 14 of loose unloading frame both sides, topping roll axle 17 after frame 12 slides into suitable position again to its locking.Upper and lower roll mandrel 17,24 links to each other with the 45KW-630KW alternating-current variable frequency motor by shaft coupling, decelerator respectively.
Fig. 2-B is the structural representation that device bottom roll axle of the present invention is installed plain-barreled roll.Among the figure, plain-barreled roll 28 same key that adopts on roll mandrel connects, and adopts axle sleeve to locate.
Embodiment one
Shown in Fig. 3-A, moulding material is high-strength stainless steel ZG10Cr13, and sheet material length is 1100mm, and width is 80mm, and thickness is 1.2mm.The designing requirement cross section is symmetrical U-shaped cross section, and shaping bent angle radius R is got 1.5mm; Before the roll forming, cross section two corner rolling attenuates, the weakened region width is 8 ± 0.05mm, and thickness is 0.8 ± 0.02mm, and two weakened region centre distances are 30mm.At room temperature, the speed of shaping is set to 25m/min, and local rolling attenuate adopts three shaping passages, passage spacing 250mm.The first passage, roll width are 3mm, and the top and bottom rolls gap is 1.1mm, and the guide roller spacing is 80.5mm; The second passage, roll width are 5mm, and the top and bottom rolls gap is 1.0mm, and the guide roller spacing is 81.7mm; The 3rd passage, roll width are 8mm, and the top and bottom rolls gap is 0.8mm, and the guide roller spacing is 85.4mm.Roll forming also adopts three passages, and every time shaping angle is followed successively by 30 °, and 60 °, 90 °, passage spacing 250mm.
Specific process is: according to the sheet material designing requirement, sheet material top and bottom weakened region is symmetrical about the sheet material median plane, the bottom roll axle assembling roll corresponding with topping roll of device of the present invention.Gap adjustment between the two leveling rollers 10 of straightening device is 1.3mm.After the sheet metal uncoiling, sheet material passes through roll stacks 1, roll stacks 23, roll stacks 34 successively, and is final again by straightening device, obtains the horizontal continuous variable thickness rolled sheet of cross sectional shape shown in Fig. 3-B behind the roll forming.
Varying-thickness rolled sheet 9 after local rolling attenuate is finished carries out roll forming through the roll forming group 5,6,7 of three passages successively.As shown in Figure 4, through roll bending group 1, be configured as stile becomes 30 degree angles with web U-shaped cross section section bar; Through roll bending group 26, be configured as stile becomes 60 degree angles with web U-shaped cross section section bar; Through roll bending group 37, finally be configured as shown in Figure 5 stile becomes an angle of 90 degrees with web U-shaped thickness section bar.
The above; only for the better specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (7)
1. the tandem-rolling continuous roller manufacturing process of a horizontal continuous variable thickness section bar, it is characterized in that, sheet material carries out local rolling attenuate by roll stacks (2,3,4) staggered relatively about in the of some groups in turn, carries out transverse curvature by the multi-pass roll bending group (5,6,7) of arranged in order again.
2. be used for the device of tandem-rolling continuous roller manufacturing process claimed in claim 1 by support (27), frame (12), roll stacks (2,3,4), upper and lower roll mandrel (17,24) and driving mechanism thereof, guide roller (11), straightening device form, it is characterized in that every a pair roller group is comprised of topping roll (20) and bottom roll (21) or plain-barreled roll (28); Topping roll (20) is installed in the upper and lower roll of topping roll axle (17) (21) or plain-barreled roll (28) is installed on the bottom roll axle (24); Topping roll axle (17) and bottom roll axle (24) be arranged in parallel and are installed on the machine frame at two sides (12).
3. the device that adopts of tandem-rolling continuous roller manufacturing process according to claim 2 is characterized in that, described straightening device is comprised of two leveling rollers (10) staggered relatively up and down.
4. the device that adopts of tandem-rolling continuous roller manufacturing process according to claim 2 is characterized in that, according to the different designs requirement of sheet material cross sectional shape, can select to install bottom roll (21) or plain-barreled roll (28) at bottom roll axle (24).
5. the device that adopts of tandem-rolling continuous roller manufacturing process according to claim 2 is characterized in that guide roller (11) is equipped with in the rolling rear sheet material of every a time both sides.
6. the device that adopts of tandem-rolling continuous roller manufacturing process according to claim 2 is characterized in that roll stacks (2,3,4) and roll bending group (5,6,7) all can be divided into several passages as required.
7. the device that adopts of tandem-rolling continuous roller manufacturing process according to claim 2 is characterized in that described upper and lower roll mandrel (17,24) passes through respectively decelerator, and shaft coupling is connected with the 45KW-630KW alternating-current variable frequency motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301996.6A CN103028601B (en) | 2011-10-09 | 2011-10-09 | Continuous rolling and continuous roller forming method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110301996.6A CN103028601B (en) | 2011-10-09 | 2011-10-09 | Continuous rolling and continuous roller forming method and device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103028601A true CN103028601A (en) | 2013-04-10 |
| CN103028601B CN103028601B (en) | 2015-10-14 |
Family
ID=48016285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110301996.6A Active CN103028601B (en) | 2011-10-09 | 2011-10-09 | Continuous rolling and continuous roller forming method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103028601B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127320A (en) * | 2015-08-24 | 2015-12-09 | 重庆威斯特电梯有限公司 | Rolling forming and discharging method for reinforcing rib |
| CN107470353A (en) * | 2017-07-28 | 2017-12-15 | 东北大学 | It is a kind of to produce horizontal Varying-thickness sketch plate, the device and its milling method of horizontal Varying Thickness Plates band |
| CN108655181A (en) * | 2017-03-28 | 2018-10-16 | 宝山钢铁股份有限公司 | A kind of material and preparation method thereof of laterally consecutive Varying-thickness |
| CN109967526A (en) * | 2019-04-28 | 2019-07-05 | 广东奥基德信机电有限公司 | A kind of multiaxis flexible roll forming assembly line |
| CN111842696A (en) * | 2019-04-29 | 2020-10-30 | 南京吉茂汽车零件有限公司 | Automatic continuous roll forming method for side belt of water tank |
| CN113042621A (en) * | 2021-03-11 | 2021-06-29 | 鑫森建设(惠州)有限公司 | Cold bending forming machine for processing baffle plate of enclosure |
| CN113305147A (en) * | 2021-06-03 | 2021-08-27 | 燕山大学 | Multi-process machining device and method for rolling wide copper plate by copper bar |
| CN115647054A (en) * | 2022-10-27 | 2023-01-31 | 扬州东升汽车零部件股份有限公司 | Device and method for precision roll forming of guide arm parts |
| CN116078815A (en) * | 2023-02-06 | 2023-05-09 | 苏升智能科技徐州有限公司 | Metal material roll forming equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101818A (en) * | 1986-03-12 | 1988-01-20 | 唐公司 | Rolling cold-bending molding technology and process units thereof |
| JPS63171203A (en) * | 1987-01-07 | 1988-07-15 | Nippon Steel Corp | Continuous cold rolling method |
| CN2164330Y (en) * | 1992-11-04 | 1994-05-11 | 刘庆平 | Cold rolling moulding machine for thin metal strip |
| CN2247567Y (en) * | 1995-12-20 | 1997-02-19 | 吉林工业大学 | Rolling bending forming machine |
| EP1393830A1 (en) * | 2002-08-27 | 2004-03-03 | Olimpia 80 SRL | Continuous sheet metal bending machine |
| CN101664879A (en) * | 2009-09-18 | 2010-03-10 | 北方工业大学 | Tailor-welded blank roll bending forming method and device thereof |
-
2011
- 2011-10-09 CN CN201110301996.6A patent/CN103028601B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101818A (en) * | 1986-03-12 | 1988-01-20 | 唐公司 | Rolling cold-bending molding technology and process units thereof |
| JPS63171203A (en) * | 1987-01-07 | 1988-07-15 | Nippon Steel Corp | Continuous cold rolling method |
| CN2164330Y (en) * | 1992-11-04 | 1994-05-11 | 刘庆平 | Cold rolling moulding machine for thin metal strip |
| CN2247567Y (en) * | 1995-12-20 | 1997-02-19 | 吉林工业大学 | Rolling bending forming machine |
| EP1393830A1 (en) * | 2002-08-27 | 2004-03-03 | Olimpia 80 SRL | Continuous sheet metal bending machine |
| CN101664879A (en) * | 2009-09-18 | 2010-03-10 | 北方工业大学 | Tailor-welded blank roll bending forming method and device thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127320A (en) * | 2015-08-24 | 2015-12-09 | 重庆威斯特电梯有限公司 | Rolling forming and discharging method for reinforcing rib |
| CN108655181A (en) * | 2017-03-28 | 2018-10-16 | 宝山钢铁股份有限公司 | A kind of material and preparation method thereof of laterally consecutive Varying-thickness |
| CN108655181B (en) * | 2017-03-28 | 2019-11-22 | 宝山钢铁股份有限公司 | A kind of material and preparation method thereof of laterally consecutive Varying-thickness |
| CN107470353A (en) * | 2017-07-28 | 2017-12-15 | 东北大学 | It is a kind of to produce horizontal Varying-thickness sketch plate, the device and its milling method of horizontal Varying Thickness Plates band |
| CN109967526B (en) * | 2019-04-28 | 2024-05-14 | 广东奥基德信机电有限公司 | Multi-shaft variable-section roll bending forming assembly line |
| CN109967526A (en) * | 2019-04-28 | 2019-07-05 | 广东奥基德信机电有限公司 | A kind of multiaxis flexible roll forming assembly line |
| CN111842696A (en) * | 2019-04-29 | 2020-10-30 | 南京吉茂汽车零件有限公司 | Automatic continuous roll forming method for side belt of water tank |
| CN113042621A (en) * | 2021-03-11 | 2021-06-29 | 鑫森建设(惠州)有限公司 | Cold bending forming machine for processing baffle plate of enclosure |
| CN113042621B (en) * | 2021-03-11 | 2023-02-28 | 鑫森建设(惠州)有限公司 | Cold bending forming machine for processing baffle plate of enclosure |
| CN113305147A (en) * | 2021-06-03 | 2021-08-27 | 燕山大学 | Multi-process machining device and method for rolling wide copper plate by copper bar |
| CN115647054A (en) * | 2022-10-27 | 2023-01-31 | 扬州东升汽车零部件股份有限公司 | Device and method for precision roll forming of guide arm parts |
| CN115647054B (en) * | 2022-10-27 | 2024-05-17 | 扬州东升汽车零部件股份有限公司 | Device and method for precise roll forming of guide arm part |
| CN116078815A (en) * | 2023-02-06 | 2023-05-09 | 苏升智能科技徐州有限公司 | Metal material roll forming equipment |
| CN116078815B (en) * | 2023-02-06 | 2023-11-14 | 苏升智能科技徐州有限公司 | Metal material roll forming equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103028601B (en) | 2015-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103028601B (en) | Continuous rolling and continuous roller forming method and device thereof | |
| CN101637787A (en) | Square and rectangular steel forming technical method | |
| CN204564759U (en) | A kind of roll leveller | |
| CN104959382A (en) | Method for rolling copper-aluminum double-layer composite plate | |
| CN103316916A (en) | Square tube former and production method of square tubes | |
| CN201572790U (en) | Heat insulation cover for coiling production line | |
| CN109663809A (en) | Large-scale and ultra-large H-beam rolling mill practice | |
| CN111151573A (en) | Special-shaped beam forming production line with right-angle steps | |
| CN103386416A (en) | Method for processing profiled bar with asymmetrical cross section | |
| CN105964691B (en) | A kind of new ten roll steel plates cold-rolling mill structure | |
| CN103191922A (en) | Four-roll sizing and reducing mill | |
| CN202263768U (en) | Roll forming device for transverse plate of continuous variable thickness | |
| CN201618720U (en) | Three-roller straightening machine | |
| CN102513470A (en) | Technology for forming drawer-type linear guide rail | |
| CN105583230A (en) | Large thick-wall special-shaped pipe cold roll forming method | |
| CN103056160A (en) | X-I short-process rolling unit for H-shaped steel | |
| CN203408983U (en) | Square tube squaring machine | |
| CN101637782B (en) | Control method of edge thinning of cold-rolled electric steel of HC rolling mill | |
| CN203170701U (en) | Four-roll type sizing-sinking mill | |
| CN111672938A (en) | Profile steel web bending correction process | |
| CN103143566B (en) | A kind of Titanium-steel composite board roll and production method thereof | |
| CN104923562A (en) | Low-cost continuous rolling technology and equipment for titanium and titanium alloy | |
| CN211803060U (en) | Special-shaped beam forming production line with right-angle steps | |
| CN103878216B (en) | Four roller deform in same pace mechanisms of sectional steel cold-bending machine | |
| CN203170770U (en) | Bar material straightening roller and straightening machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |