CN113210424A - Aluminum alloy cold rolling mechanism - Google Patents
Aluminum alloy cold rolling mechanism Download PDFInfo
- Publication number
- CN113210424A CN113210424A CN202110549580.XA CN202110549580A CN113210424A CN 113210424 A CN113210424 A CN 113210424A CN 202110549580 A CN202110549580 A CN 202110549580A CN 113210424 A CN113210424 A CN 113210424A
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- China
- Prior art keywords
- aluminum alloy
- cold rolling
- upper roller
- rolling mechanism
- roller
- 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.)
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Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 52
- 238000005097 cold rolling Methods 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 title claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 238000010408 sweeping Methods 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 19
- 230000009471 action Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 7
- 238000005554 pickling Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides an aluminum alloy cold rolling mechanism, which comprises a bottom frame, wherein a first bracket is arranged on the bottom frame, an upper roller is arranged on the first bracket, a circle of rolling rail is arranged on the upper roller, a lower roller positioned below the upper roller is arranged on the first bracket, a gap is reserved between the rolling rail and the lower roller, a wheel disc is arranged at one end of the upper roller, a synchronizing wheel is arranged on the outer end surface of the wheel disc, a rotating groove is arranged on the bottom frame, a rotating plate mechanism which is in linkage action with the roller is arranged on a frame in a linkage action manner, so that an aluminum alloy material is vibrated in advance before feeding, and an oxide skin layer on the bottom surface of the aluminum alloy material is vibrated downwards through the vibration effect, and the oxide skin layer which is dropped off by rolling on the upper surface of the aluminum alloy material is also vibrated downwards, in conclusion, by using the cold rolling device, the surface oxide layer of the aluminum alloy material can be cleaned before rail pressure guiding, and the product quality is improved.
Description
Technical Field
The invention relates to the technical field of cold rolling equipment, in particular to a cold rolling mechanism for aluminum alloy.
Background
Cold rolling, namely, using a hot rolled steel coil as a raw material, performing surface treatment in a pickling bath, and then performing cold continuous rolling to obtain a finished product, namely a hard rolled coil, wherein the strength and hardness of the hard rolled coil are increased and the toughness and plasticity index of the hard rolled coil are reduced due to cold hardening caused by continuous cold deformation, so that the stamping performance is deteriorated, and the hard rolled coil can only be used for parts with simple deformation
The aluminum alloy surface before cold rolling remains on surperficial partial oxide skin because of pickling treatment because of being difficult for manual cleaning when proposing from the oxidation pond, promptly, the partial oxide skin that drops on the aluminum alloy surface of fishing out from the pickling pond still can adhere to on the aluminum alloy surface, when the aluminum alloy that remains the oxide layer passes through cold rolling equipment cold rolling, can be because of the cold-rolling roller rolls the effect, rolls the oxide layer on the aluminum alloy surface again, leads to the spot to appear on the aluminum alloy surface after the cold rolling treatment, influences product quality.
Disclosure of Invention
The invention aims to solve the technical problem of providing an aluminum alloy cold rolling mechanism, which can vibrate the aluminum alloy to be put into a cold rolling roller to ensure that residual oxide skin on the surface of the aluminum alloy falls off downwards, so that spots do not appear on the surface after the aluminum alloy is rolled by the cold rolling roller, and the product quality is improved.
The invention adopts the technical scheme that the aluminum alloy cold rolling mechanism comprises a bottom frame, wherein a first support is arranged on the bottom frame, an upper roller is arranged on the first support, a circle of rolling rail is arranged on the upper roller, a lower roller positioned below the upper roller is arranged on the first support, a gap is reserved between the rolling rail and the lower roller, a wheel disc is arranged at one end of the upper roller, a synchronizing wheel is arranged on the outer end surface of the wheel disc, a rotating groove is formed in the bottom frame, a rotating shaft is fixed in the rotating groove through a bearing, the outer end of the rotating shaft is connected to the synchronizing wheel through a synchronizing belt, so that the upper roller drives the rotating shaft to rotate, a support positioned above the rotating shaft is arranged on the bottom frame, a rotating plate extending to the middle part above the bottom frame is hinged to the top of the support, a beating seat is arranged on the top surface of the rotating plate, and an impeller synchronously rotating along with the rotating shaft is arranged on the rotating shaft, the bottom surface of the rotating plate is provided with a lifting plate corresponding to the upper part of the wheel, the lifting plate is a conical plate with a wide upper part and a narrow lower part, and when the impeller rotates along with the rotating shaft, the impeller is in contact with the conical surface of the lifting plate through the blades, so that the lifting plate moves upwards, and the lifting plate drives the striking base to rotate upwards around the hinged part of the support frame through the rotating plate.
Preferably, a sinking groove is formed in the bottom frame, and the impeller is located in the sinking groove.
Preferably, the striking seat is provided with two positions, the two positions are positioned on the top surface of the rotating plate, and the two positions are arranged close to each other.
Preferably, a spring is arranged on the bottom surface of the rotating plate, and the other end of the spring is connected to the supporting frame.
Preferably, the outer end of the lower roller is provided with a driven gear which rotates synchronously with the lower roller, the outer end of the upper roller is provided with a driving gear which is positioned above the driven gear, and when the upper roller rotates, the driving gear is meshed with the driven gear to rotate, so that the driven gear drives the lower roller to rotate.
Preferably, the chassis is provided with a row of second supports located on one side of the first support, the second supports close to the first support are provided with front and rear tension springs, end rods are arranged at the inner ends of the tension springs, and front and rear tension springs are arranged between the end rods and the first support.
Preferably, a row of sweeping pieces are connected between the front end rod and the rear end rod, the sweeping pieces (the sweeping pieces are V-shaped rubber pieces with two sides extending towards the direction of the end rods in an inclined mode, and a gap is reserved between every two adjacent sweeping pieces.
Preferably, a crank connecting rod hinged with the end rod is arranged on the outer end face of the driven gear, and the driven gear drives the end rod to move left and right through the crank connecting rod when rotating.
Compared with the prior art, the invention has the advantages that a group of rolling mechanisms are arranged on the support frame arranged at the feeding side of the equipment, the rolling rails are arranged on the upper rollers in the rolling mechanisms, the aluminum alloy material can be rolled before being conveyed to the rear guide roller, the oxide scale layer remained on the surface of the aluminum alloy material falls off downwards due to hard rolling in the acid cleaning process link, the rotating plate mechanism which is in linkage action with the rollers is arranged on the frame in a linkage action manner, so that the rollers can also vibrate upwards in linkage with the rotating plate mechanism while rotating, the vibration action just acts on the bottom surface of the aluminum alloy material, the oxide scale layer on the bottom surface of the aluminum alloy material can vibrate in advance before feeding the aluminum alloy, and the vibration effect can cause the oxide scale layer falling off due to rolling on the upper surface of the aluminum alloy material to vibrate downwards, in conclusion, by using the cold rolling equipment, the surface oxide layer of the aluminum alloy material can be cleaned before rail pressure guiding, and the product quality is improved.
Drawings
FIG. 1 is a first overall view of a cold rolling mechanism for an aluminum alloy according to an embodiment of the present invention;
FIG. 2 is a partial structural diagram of a second perspective view of a cold rolling mechanism for aluminum alloy according to an embodiment of the present invention;
FIG. 3 is a schematic bottom view of a cold rolling mechanism for aluminum alloys according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of the aluminum alloy cold rolling mechanism according to the embodiment of the present invention after the rotating shaft is removed;
FIG. 5 is a schematic rear plan view of a cold rolling mechanism for aluminum alloy according to an embodiment of the present invention;
fig. 6 is a schematic top plan view of a cold rolling mechanism for aluminum alloy according to an embodiment of the present invention, so as to facilitate viewing of a V-shaped specific structure of a wiper blade.
In the figure: the device comprises a bottom frame-1, a rotary groove-101, a sinking groove-102, a rotating shaft-2, an impeller-201, a first support-3, an upper roller-4, a rolling rail-401, a wheel disc-402, a synchronous wheel-403, a synchronous belt-404, a driving gear-405, a support frame-5, a rotary plate-6, a lifting plate-601, a spring-602, a striking seat-603, a lower roller-7, a driven gear-701, a crank connecting rod-702, a second support-8, an end rod-9, a sweeping piece-901 and a tension spring-10.
Detailed Description
The foregoing and additional embodiments and advantages of the present invention are described more fully hereinafter with reference to the accompanying drawings. It is to be understood that the described embodiments are merely some, and not all, embodiments of the invention.
In one embodiment, as shown in fig. 1 and 2.
The aluminum alloy cold rolling mechanism provided by the embodiment comprises a chassis 1, wherein a first support 3 is arranged on the chassis 1, an upper roller 4 is arranged on the first support 3, a circle of rolling rail 401 is arranged on the upper roller 4, a lower roller 7 positioned below the upper roller 4 is arranged on the first support 3, a gap is reserved between the rolling rail 401 and the lower roller 7, a driven gear 701 synchronously rotating with the lower roller 7 is arranged at the outer end of the lower roller 7, a driving gear 405 positioned above the driven gear 701 is arranged at the outer end of the upper roller 4, when the upper roller 4 rotates, the driving gear 405 is meshed with the driven gear 701 to rotate, so that the driven gear 701 drives the lower roller 7 to rotate, a wheel disc 402 is arranged at one end of the roller 4, a synchronizing wheel is arranged on the outer end surface of the wheel disc 402, a rotary groove 101 is arranged on the chassis 1, a rotary shaft 2 is fixed in the rotary groove 101 through a bearing, the outer end of the rotary shaft 2 is connected to the synchronizing wheel 403 through the synchronizing belt 404, so that the upper roller 4 drives the rotary shaft 2 to rotate, the upper roller 4 and the lower roller 7 form a first rolling mechanism for guiding the aluminum alloy material, the aluminum alloy material is guided to other guide rollers at the rear part through the upper roller 4 and the lower roller 7, the upper surface of the material is rolled by an upper rolling rail 401 on the upper roller 4, the rolling action of the rolling rail 401 is utilized to break the residual oxide skin layer on the upper surface of the material in the pickling link, as shown in figures 1 and 2, because a support frame 5 positioned above a rotating shaft 2 is arranged on a bottom frame 1, the top of the support frame 5 is hinged with a rotating plate 6 extending to the middle part above the bottom frame 1, the top surface of the rotating plate 6 is provided with two striking seats 603, the two striking seats 603 are positioned on the top surface of the rotating plate 6, the two striking seats 603 are arranged close to each other, an impeller 201 synchronously rotating along with the rotating shaft 2 is arranged on the rotating shaft 2, the bottom surface of the rotating plate 6 is provided with a lifting plate 601 corresponding to the upper part of the impeller, the lifting plate 601 is a tapered plate with a wide upper part and a narrow lower part, therefore, when the impeller 201 rotates along with the rotating shaft 2, the lifting plate 601 is also contacted with the tapered surface of the lifting plate 601 through the blades, the lifting plate 601 moves upwards, so that the lifting plate 601 drives the striking base 603 to rotate upwards around the hinged part of the supporting frame 5 through the rotating plate 6, the rotating plate 6 with the upward rotating characteristic is a striking mechanism, when the rotating plate 6 rotates upwards, the striking base 603 installed on the end head can be used for striking the aluminum alloy material, in the process of transferring the aluminum alloy material, the upper surface of the aluminum alloy material is rolled by the upper roller 4, the oxide layer on the upper surface of the aluminum alloy material is fallen downwards, therefore, when the striking base 603 strikes the bottom surface of the material, the material is vibrated, the oxide layer fallen from the upper surface of the material is vibrated downwards, therefore, the upper roller 4 can drive the rotating plate 6 to strike the bottom surface through the striking base 603, the material is vibrated, so that the scale layer which is peeled off from the upper surface of the material due to rolling is discharged outwards under the vibration effect, and the comprehensive structural design is reasonable. In order to improve the rational structure, the impeller 201 has a reasonable rotation space, so the chassis 1 is provided with the sink 102, and the impeller 201 is located in the sink 102. The bottom surface of the rotating plate 6 is provided with a spring 602 which enables the rotating plate to return downwards after rotating, and the other end of the spring 602 is connected to the bracket 5.
In another embodiment, as shown in fig. 1 and 2.
The underframe 1 is provided with a row of second supports 8 positioned at one side of the first support 3, the second support 8 close to the first support 3 is provided with a front and a back tension springs 10, the inner ends of the tension springs 10 are provided with end rods 9, a front and a back tension springs 10 are arranged between the end rods 9 and the first support 3, a cleaning structure positioned between the two roll guide structures at the feeding end is formed by a row of sweeping pieces 901 between the front and the back end rods 9 and the two end rods 9, therefore, when the front and the back end rods 9 move left and right, the sweeping pieces 901 between the front and the back end rods are driven to synchronously act, the upper surface of the aluminum alloy material guided by the upper roll 4 and the lower roll 7 can be cleaned, and because the oxide skin layer on the upper surface before the aluminum alloy material is fed is beaten by the vibration of the beating seat 603 and is crushed by the rolling of the rolling rail 401, the oxide skin layer is separated from the upper surface of the aluminum alloy, as shown in figure 6, a row of sweeping pieces 901 are connected between the front and rear two end rods 9, the sweeping pieces 901 are V-shaped rubber pieces with two sides extending obliquely towards the direction of the end rods 9, so that the sweeping pieces 901 moving left and right can pull off the oxide scale layer detached from the upper surface of the aluminum alloy to two sides when in action, and because the outer end surface of the driven gear 701 is provided with a crank connecting rod 702 hinged with the end rods 9, the driven gear 701 drives the end rods 9 to move left and right through the crank connecting rod 702 when rotating, therefore, the power when the end rods 9 perform reciprocating action left and right comes from the rotation of the driven gear 701, and the power when the driven gear 701 rotates comes from the engagement between the lower roller 7 and the upper roller 4, therefore, when the upper roller 4 acts, the lower roller 7 can be matched with the upper roller to rotate to guide the aluminum alloy material into the rear guide roller, the rotating plate 6 can also rotate upwards, and the two end rods 9 can be driven to perform reciprocating sweeping actions, the structural design is ingenious, and the electric energy is saved.
The above-described embodiments further explain the object, technical means, and advantageous effects of the present invention in detail. It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (8)
1. The aluminum alloy cold rolling mechanism is characterized by comprising a base frame (1), wherein a first support (3) is arranged on the base frame (1), an upper roller (4) is installed on the first support (3), a circle of rolling rail (401) is arranged on the upper roller (4), a lower roller (7) located below the upper roller (4) is arranged on the first support (3), a gap is reserved between the rolling rail (401) and the lower roller (7), a wheel disc (402) is arranged at one end of the upper roller (4), a synchronizing wheel (403) is arranged on the outer end face of the wheel disc (402), a rotating groove (101) is formed in the base frame (1), a rotating shaft (2) is fixed in the rotating groove (101) through a bearing, the outer end of the rotating shaft (2) is connected to the synchronizing wheel (403) through the synchronizing belt (404), so that the upper roller (4) drives the rotating shaft (2) to rotate, be equipped with on chassis (1) and be located strut (5) of pivot (2) top, strut (5) top hinged joint have stretch to in the commentaries on classics board (6) at chassis (1) top middle part, commentaries on classics board (6) top surface is equipped with hits seat (603), be equipped with impeller (201) along with its synchronous revolution in pivot (2), commentaries on classics board (6) bottom surface be equipped with corresponding to lifter plate (601) of wheel (201) top, lifter plate (601) are narrow conical plate down in last width, impeller (201) are followed when pivot (2) are rotatory, through the blade with the conical surface contact of lifter plate (601), make lifter plate (601) rebound, so that lifter plate (601) pass through commentaries on classics board (6) drive hit seat (603) around the articulated portion of strut (5) make it is rotatory upwards.
2. The aluminum alloy cold rolling mechanism according to claim 1, wherein a sinking groove (102) is formed in the base frame (1), and the impeller (201) is located in the sinking groove (102).
3. The aluminum alloy cold rolling mechanism according to claim 1, wherein the striking bases (603) are located in two places, the two striking bases (603) are located on the top surface of the rotating plate (6), and the two striking bases (603) are arranged adjacently.
4. The aluminum alloy cold rolling mechanism according to claim 1, wherein a spring (602) is arranged on the bottom surface of the rotating plate (6), and the other end of the spring (602) is connected to the supporting frame (5).
5. The aluminum alloy cold rolling mechanism according to claim 4, wherein the outer end of the lower roller (7) is provided with a driven gear (701) which rotates synchronously with the lower roller, the outer end of the upper roller (4) is provided with a driving gear (405) which is positioned above the driven gear (701), and when the upper roller (4) rotates, the driving gear (405) is engaged with the driven gear (701) to rotate, so that the driven gear (701) drives the lower roller (7) to rotate.
6. The aluminum alloy cold rolling mechanism according to claim 5, wherein a row of second supports (8) is arranged on the bottom frame (1) and located on one side of the first support (3), a front tension spring and a rear tension spring (10) are arranged on the second supports (8) close to the first support (3), an end rod (9) is arranged at the inner ends of the tension springs (10), and the front tension spring and the rear tension spring (10) are arranged between the end rod (9) and the first support (3).
7. The aluminum alloy cold rolling mechanism according to claim 6, wherein a row of sweeping plates (901) are connected between the front and rear end rods (9), the sweeping plates (901) are V-shaped rubber sheets with two sides extending obliquely towards the end rods (9), and a gap is reserved between two adjacent sweeping plates (901).
8. The aluminum alloy cold rolling mechanism according to claim 7, wherein a crank connecting rod (702) hinged with the end rod (9) is arranged on the outer end face of the driven gear (701), and the driven gear (701) drives the end rod (9) to move left and right through the crank connecting rod (702) when rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110549580.XA CN113210424A (en) | 2021-05-20 | 2021-05-20 | Aluminum alloy cold rolling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110549580.XA CN113210424A (en) | 2021-05-20 | 2021-05-20 | Aluminum alloy cold rolling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113210424A true CN113210424A (en) | 2021-08-06 |
Family
ID=77093319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110549580.XA Withdrawn CN113210424A (en) | 2021-05-20 | 2021-05-20 | Aluminum alloy cold rolling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113210424A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116116911A (en) * | 2022-12-29 | 2023-05-16 | 响水巨合金属制品有限公司 | Thickness control device for stainless steel cold rolling |
| CN118513364A (en) * | 2024-07-25 | 2024-08-20 | 厦门瑞华达机械设备有限公司 | Heat treatment processing equipment for metal plate |
-
2021
- 2021-05-20 CN CN202110549580.XA patent/CN113210424A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116116911A (en) * | 2022-12-29 | 2023-05-16 | 响水巨合金属制品有限公司 | Thickness control device for stainless steel cold rolling |
| CN116116911B (en) * | 2022-12-29 | 2024-08-27 | 响水巨合金属制品有限公司 | Thickness control device for stainless steel cold rolling |
| CN118513364A (en) * | 2024-07-25 | 2024-08-20 | 厦门瑞华达机械设备有限公司 | Heat treatment processing equipment for metal plate |
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Application publication date: 20210806 |