CN109505184A - Paper machine wide cut steel energy conservation drying cylinder - Google Patents
Paper machine wide cut steel energy conservation drying cylinder Download PDFInfo
- Publication number
- CN109505184A CN109505184A CN201811590153.0A CN201811590153A CN109505184A CN 109505184 A CN109505184 A CN 109505184A CN 201811590153 A CN201811590153 A CN 201811590153A CN 109505184 A CN109505184 A CN 109505184A
- Authority
- CN
- China
- Prior art keywords
- shell
- steel
- end cap
- paper machine
- energy conservation
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 238000001035 drying Methods 0.000 title claims abstract description 28
- 238000004134 energy conservation Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 210000001331 nose Anatomy 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/021—Construction of the cylinders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of paper machine wide cut steel energy conservation drying cylinders, the shell is sequentially coaxially connected and composed by multistage steel ring, each steel ring is turned to by roll of steel plate and surface is provided with axial weld seam, has the angle for making the two misplace between the axial weld seam of two adjacent steel rings.In the present invention, by the mutual cooperation of steel, tabulator bars, siphon device, insulating layer etc., casing surface temperature is made to improve 6~10 degree, energy consumption reduces by 5%, greatly improves the thermal efficiency, reduces energy consumption.
Description
Technical field:
The invention belongs to cylinder structure technical field of improvement, in particular to a kind of paper machine wide cut steel energy conservation drying cylinder.
Background technique:
Drying cylinder is the dry critical component of paper, currently, most drying cylinder is made using cast iron materials, quantity accounts for about
The 2/3 of paper industry pressure vessel sum.The structure of drying cylinder is: including shell, tabulator bars, siphon pipe, end cap and spindle nose, shell
An end cap is installed at both ends respectively, and spindle nose is arranged at each end cap central, has in spindle nose and is passed through saturated vapor into shell
Channel and the channel being connected to the siphon pipe being arranged in shell, multiple tabulator bars are arranged in upper axially spaced-apart on the inner wall of the housing.Make
Used time, saturated vapor are passed through in shell and condense in shell, and the heat released rises casing surface temperature, will wrap
The paper heating of housing exterior walls surface operation is overlayed on, paper is oven-dried under the action of high temperature.With the development of science and technology, it casts
Iron is just gradually replaced by steel, and the cylinder body of steel dryer and the wall thickness of cylinder cap will greatly reduce, quality less than cast iron dryer half,
Cost is also greatly reduced.Find in practical applications, existing steel dryer length, diameter, heat preservation and in terms of
It can also advanced optimize.
Summary of the invention:
It is an object of the invention to overcome the deficiencies of the prior art and provide it is scientific and reasonable for structure and by welding optimization, protect
Temperature optimization and water-repellent film optimize to improve a kind of paper machine wide cut steel energy conservation drying cylinder of the thermal efficiency.
The technical solution adopted by the present invention is that:
Installation end is distinguished at a kind of paper machine wide cut steel energy conservation drying cylinder, including shell, end cap and spindle nose, shell both ends
It covers, spindle nose is set at each end cap central, it is characterised in that: the shell is sequentially coaxially connected and composed by multistage steel ring, each
Steel ring is turned to by roll of steel plate and surface is provided with axial weld seam, and having between the axial weld seam of two adjacent steel rings makes two
The angle of person's dislocation.
Further more, being arranged at intervals with tabulator bars on shell inner edge, there is angle between each tabulator bars and shell axis, it should
The value range of angle is 5~15 degree.
Further more, the diameter of the steel ring is 1.5~3 meters, width is more than or equal to 8 meters.
Further more, upper radial equipartition is fixed with 10~50 tabulator bars on the inner wall of the housing, the tabulator bars using aluminium, copper material or
Steel are made.
Further more, the sectional dimension of the tabulator bars is 40 × 50 square millimeters.
Further more, the wall thickness of the steel ring is 23~25 millimeters.
Further more, the outwardly extending lip integrally extended to end cap outside is arranged in the outboard end for being located at two steel rings of two sides,
Further more, the end cap end face outside is provided with multiple floors, insulation board, phase are filled between two adjacent floors
Two adjacent one cover boards of floor spiral-lock, two adjacent deck side edges are in contact, and the outer rim of each cover board is in contact with outwardly extending lip,
The inner edge of each cover board is in contact with spindle nose outer rim.
Further more, a concave ring is arranged in the shell on the inner wall of outwardly extending lip, which clamps end cap on end face outwardly
Align the protrusion of setting, the end cap outer rim of the protrusion two sides is arranged to wedge shape plate, two wedge shape plates respectively with concave ring two sides
Inner walls be welded and fixed.
Further more, the weld width of the end cap two sides is all larger than 1~1.5 times of thickness of shell, the weldering of the end cap two sides
The angular aperture of seam is 40~50 degree.
What the present invention obtained has the technical effect that
In the present invention, shell is made of multiple steel rings successively welded, is had between the weld seam of two adjacent steel rings itself
There is certain angle, be improved whole intensity, the tabulator bars of different number are set according further to the difference of diameter of the housing,
Fixed syphon or rotation rainbow can also be arranged in the condensed water moisture film formed when separating shell high speed rotation by it in shell
Haustorium further decreases influence of the condensed water to casing surface temperature, improves the transmitting of heat, then has outside the end cap at shell both ends
Side surface is provided with insulating layer, and heat loss at end cap is greatly reduced, and concentrates at shell to improve heat, passes through steel
The mutual cooperation of material, tabulator bars, siphon device, insulating layer etc. makes casing surface temperature improve 6~10 degree, and energy consumption reduces by 5%, pole
The big raising thermal efficiency, reduces energy consumption.
Detailed description of the invention:
Fig. 1 is overall structure figure of the present invention；
Fig. 2 is the axial enlarged drawing that Fig. 1 removes end cap；
Fig. 3 is the portion the I enlarged drawing of Fig. 2；
Fig. 4 is condensed water moisture film schematic diagram when Fig. 1 is rotated clockwise；
Fig. 5 is the portion the II enlarged drawing of Fig. 4；
Fig. 6 is the schematic diagram of fixed syphon；
Fig. 7 is the schematic diagram of rotary syphon；
Fig. 8 is the structural schematic diagram at end cap and case weld；
Fig. 9 is the portion the III enlarged drawing of Fig. 8；
Figure 10 is the schematic diagram of end cap setting floor and insulating layer；
Figure 11 is the schematic diagram of Figure 10 setting cover board；
Figure 12 is the A direction view of Fig. 4；
Figure 13 is the B direction view of Fig. 4.
Specific embodiment:
Below with reference to embodiment, the present invention is further described, following embodiments be it is illustrative, be not restrictive,
It cannot be limited the scope of protection of the present invention with following embodiments.
A kind of paper machine wide cut steel energy conservation drying cylinder as shown in Fig. 1~11, including shell, end cap 17, spindle nose 11, is disturbed
Stick 13 and siphon device 18 are flowed, shell both ends install end cap respectively, spindle nose are arranged at end cap central, surface is radially equal on the inner wall of the housing
Multiple tabulator bars are arranged in cloth, siphon device are provided in shell, innovation of the invention is: the shell by multistage steel ring 5,6,
8,9 successively welding 7 connect and compose, each steel ring is made of the winding of steel plate 4 and surface has an axial weld seam 3, adjacent two
There is the angle β for making the two misplace between the axial weld seam of steel ring.
In the present embodiment, if axial weld seam all point-blank will affect integral strength, so adjacent axial tool
There is certain angle, and when shell is longer, which also avoids certain two weld seam and is still located on collinear problem,
Above-mentioned β be 30~50 degree, i other words: it is two adjacent axial direction weld seams any point weld 7 seam crossing subpoint with connect
The central angle of circle where seam is 30~50 degree.
Steel ring is made of Q345R roll of steel plate around rear welding.Saturated vapor pipeline and discharge pipe line can be by spindle noses
Space 12 across and into enclosure interior.
The diameter of steel ring is 1.5~3 meters, and the overall width after the assembling of all steel rings is at 8~10 meters, certain ten meters or more total
Width is also possible, and specific width needs to determine according to production.
Since the size of shell is larger, so the condensation water quantity generated in drying cylinder operation is very big, studies have shown that diameter 1.5
The drying cylinder of rice forms moisture film in speed 500m/min, and the thermal resistance of moisture film is about 40 times of steel medium, can be can be greatly reduced
Casing surface temperature.Be arranged in shell thus by near a side end cap to the tabulator bars near another side end cap, specifically: institute
Radial equipartition is provided with 10~50 tabulator bars, the table that each tabulator bars are bonded with inner walls on inner wall after having steel ring assembling
Face is the outer convex cooperated with inner walls, keeps the connection of the two even closer, and the two sides of tabulator bars are fixed by welding 14,
The sectional dimension of tabulator bars is 40 × 60 square millimeters.It, can also in advance on the inner wall of the housing in addition to mode is welded and fixed in above-mentioned
Clip is set, then has clip that tabulator bars are immobilized in the shell on wall.
Tabulator bars quantity and size selection, to accumulate 15 not overflow of condensed water as principle, such as: 1800 millimeters of diameter are
Column, tabulator bars quantity are 24~30, and tabulator bars width 49mm is highly 59mm；Diameter is that 3 meters of wide cut drying cylinder tabulator bars are answered
It is 35~40, by the setting of above-mentioned tabulator bars, surface of shell mean temperature can be made to improve 6~10 DEG C, increase thermal effect
Can, play energy-saving effect.
The selection of tabulator bars is solid Heat Conduction Material, such as corrosion-resistant aluminium, copper material and steel etc., according to wide cut drying cylinder
Intensity and toughness and heat transfer property determine, such as: shell breadth degree should select steel tabulator bars when reaching 9 meters or more.Tabulator bars
Formation in addition to that can reduce moisture film, can also improve the mechanical strength of shell.
Preferred scheme is: tabulator bars are arranged to heeling condition, i.e., the axis of the shell of each tabulator bars and drying cylinder exists
There is an angle between the projection on shell at tabulator bars.Specific structure is as shown in Figure 12,13:
In Figure 12, shell axis is projected as 29 on shell at the tabulator bars, and the angle with tabulator bars at this is 5~15
It spends, is 15 degree in figure.Condensed water 15 accumulates in the side of tabulator bars 13, since the tabulator bars are the direction moved upwards in figure
(referring to the A for rotating clockwise shell in Fig. 4) arrives right side end cap so condensed water flows to the right along inclined tabulator bars
When neighbouring, condensed water is collected and is discharged by the siphon device at this.
In Figure 13, unlike Figure 12, direction that the tabulator bars at this move downward in Fig. 4 (referring to rotating clockwise
The B of shell), so condensed water accumulates in the other side of tabulator bars at this, and flow to the left, it is cold when arriving near the end cap of left side
Condensate is collected and is discharged by the siphon device at this.
Figure 12,13 tabulator bars be obliquely installed structure the advantages of be: by fluid motion theory analysis, since inclination is disturbed
Stick is flowed, increases condensed water cross-flow velocity, the oblique body force load of condensed water, when drying cylinder runs at high speed, condensed water will
Siphon device is rapidly flowed to, the siphon effect of condensed water discharge can be improved 10~20%.
The wall thickness of steel ring is 23~25 millimeters, and compared with the 28~30 of cast iron wall thickness millimeters, weight is lighter, but intensity is more
It is high.Cast iron dryer weight for various sizes of steel dryer than identical size declines 2~4 tons, substantially reduces by 10~15%
Weight, saved material.
Siphon device should be selected according to condensed water motion conditions, low speed, not formed water ring can be selected as shown in FIG. 6
Fixed syphon has formed water ring for the drying cylinder to run at high speed, should select rotary syphon as shown in Figure 7.Above-mentioned rainbow
Haustorium can be provided only at a side end cap, can also be respectively provided with two sides end cap, be tied of course for shown in cooperation Figure 12,13
Structure is required to setting siphon device at the end cap of two sides.
As shown in Figure 8,9, the outboard end positioned at two steel rings of two sides is arranged overhanging to integrally extending on the outside of end cap
Side 16, the axial width of the outwardly extending lip are 30~50 millimeters.End cap, the peace of end cap are installed at outwardly extending lip and shell integrally connected
Assembling structure is: a concave ring 26 is arranged in shell on the inner wall of outwardly extending lip, and end cap contraposition is clamped on the end face of the concave ring outwardly and is set
The protrusion 25 set, the end cap outer rim of the protrusion two sides are arranged to wedge shape plate 27, two wedge shape plates respectively with concave ring two sides
Inner walls welding 21,22 is fixed.The weld width f of end cap two sides is all larger than 1~1.5 times of thickness of shell δ c, end cap two sides
Weld seam angular aperture be 40~50 degree, preferably 45 degree.Weld width, angular aperture meet specification " 150 steel pressure vessel of GB "
Relevant regulations, the mutual cooperation of two side welds, concave ring and protrusion can solve the region of high stress of end cap and housing junction
Problem.
End cap end face outside is provided with multiple floors 28, is filled with insulation board 23, the heat preservation between two adjacent floors
There is plate outline border 20, outline border and rock wool therein or super glass wool layer are attached in end cap end face outside jointly.Adjacent two
One cover board 2 of floor spiral-lock, two adjacent deck side edges 1 are in contact, and the outer rim of each cover board is embedded in outwardly extending lip end face outside institute
In the recess 19 of system, the inner edge of each cover board is in contact with spindle nose outer rim, and cover board is fixed by stove bolt 10 with floor.Above-mentioned rib
Plate can be used steel plate or channel steel, and vertical beam is eight, and insulation board is also eight, cover board using its its inner surface 24 of sheet metal with
Thermal insulation material in insulation board is in close contact.By the setting of insulation board, the heat dissipation at end cap is reduced, can at least be reduced
5% thermal loss.
For the hardness and finish for guaranteeing dryer surface, surface should be processed after drying cylinder is installed, be existed first
It is finished on lathe, is carrying out surface covering, coating process has two schemes, and chrome layer is plated with barrel plating or slot, can also thermal spraying height
Chromium, chromium plating or high chromium thermal jet should carry out grinding after reading, to guarantee the uniform and gloss of dryer surface.
In the present invention, shell is made of multiple steel rings successively welded, is had between the weld seam of two adjacent steel rings itself
There is certain angle, be improved whole intensity, the tabulator bars of different number are set according further to the difference of diameter of the housing,
Fixed syphon or rotation rainbow can also be arranged in the condensed water moisture film formed when especially separating shell high speed rotation in shell
Haustorium further decreases influence of the condensed water to casing surface temperature, improves the transmitting of heat, then has outside the end cap at shell both ends
Side surface is provided with insulating layer, and heat loss at end cap is greatly reduced, and concentrates at shell to improve heat, passes through steel
The mutual cooperation of material, tabulator bars, siphon device, insulating layer etc. makes casing surface temperature improve 6~7 degree, and energy consumption reduces by 5%, greatly
The raising thermal efficiency, reduce energy consumption.
Claims (10)
1. a kind of paper machine installs end cap with wide cut steel energy conservation drying cylinder, including shell, end cap and spindle nose, shell both ends respectively,
Spindle nose is set at each end cap central, it is characterised in that: the shell is sequentially coaxially connected and composed by multistage steel ring, each steel ring
It is turned to by roll of steel plate and surface is provided with axial weld seam, having between the axial weld seam of two adjacent steel rings keeps the two wrong
The angle of position.
2. a kind of paper machine according to claim 1 wide cut steel energy conservation drying cylinder, it is characterised in that: on shell inner edge
Tabulator bars are arranged at intervals with, there is angle, the value range of the angle is 5~15 degree between each tabulator bars and shell axis.
3. a kind of paper machine according to claim 1 wide cut steel energy conservation drying cylinder, it is characterised in that: the steel ring it is straight
Diameter is 1.5~3 meters, and width is more than or equal to 8 meters.
4. a kind of paper machine according to claim 1 or 2 or 3 wide cut steel energy conservation drying cylinder, it is characterised in that: in shell
Radial equipartition is fixed with 10~50 tabulator bars on inner wall, which is made using aluminium, copper material or steel.
5. a kind of paper machine wide cut steel energy conservation drying cylinder according to claim 4, it is characterised in that: the tabulator bars are cut
Face is having a size of 40 × 60 square millimeters.
6. a kind of paper machine wide cut steel energy conservation drying cylinder according to claim 4, it is characterised in that: the wall thickness of the steel ring
It is 23~25 millimeters.
7. a kind of according to claim 1 or 2 or 3 or 5 or 6 paper machine wide cut steel energy conservation drying cylinders, it is characterised in that: position
The outwardly extending lip integrally extended to end cap outside is set in the outboard end of two steel rings of two sides.
8. a kind of paper machine wide cut steel energy conservation drying cylinder according to claim 7, it is characterised in that: the end cap outboard end
Face is provided with multiple floors, is filled with insulation board between two adjacent floors, two adjacent one cover boards of floor spiral-lock, and two
Adjacent deck side edge is in contact, and the outer rim of each cover board is in contact with outwardly extending lip, inner edge and the spindle nose outer rim phase of each cover board
Contact.
9. a kind of paper machine wide cut steel energy conservation drying cylinder according to claim 8, it is characterised in that: the shell is close to outer
It stretches and a concave ring is set on the inner wall on side, the protrusion of end cap contraposition setting is clamped on the end face of the concave ring outwardly, the protrusion two sides
End cap outer rim is arranged to wedge shape plate, and inner walls of two wedge shape plates respectively with concave ring two sides are welded and fixed.
10. a kind of paper machine wide cut steel energy conservation drying cylinder according to claim 9, it is characterised in that: the end cap two sides
Weld width be all larger than 1~1.5 times of thickness of shell, the angular aperture of the weld seam of the end cap two sides is 40~50 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811590153.0A CN109505184B (en) | 2018-12-25 | 2018-12-25 | Wide-width energy-saving steel drying cylinder for paper machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811590153.0A CN109505184B (en) | 2018-12-25 | 2018-12-25 | Wide-width energy-saving steel drying cylinder for paper machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109505184A true CN109505184A (en) | 2019-03-22 |
| CN109505184B CN109505184B (en) | 2024-02-20 |
Family
ID=65754517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811590153.0A Active CN109505184B (en) | 2018-12-25 | 2018-12-25 | Wide-width energy-saving steel drying cylinder for paper machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505184B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001960A (en) * | 2019-12-18 | 2020-04-14 | 安德里茨（中国）有限公司 | Yankee cylinder section pre-processing piece and method for manufacturing Yankee cylinder |
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|---|---|---|---|---|
| CN111001960A (en) * | 2019-12-18 | 2020-04-14 | 安德里茨（中国）有限公司 | Yankee cylinder section pre-processing piece and method for manufacturing Yankee cylinder |
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| CN109505184B (en) | 2024-02-20 |
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