CN105562478B - A kind of method of the continuous cold roll forming of the asymmetric plate of container bottom side beam - Google Patents
A kind of method of the continuous cold roll forming of the asymmetric plate of container bottom side beam Download PDFInfo
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- CN105562478B CN105562478B CN201610100417.4A CN201610100417A CN105562478B CN 105562478 B CN105562478 B CN 105562478B CN 201610100417 A CN201610100417 A CN 201610100417A CN 105562478 B CN105562478 B CN 105562478B
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- 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
- B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a kind of method of the continuous cold roll forming of the asymmetric plate of container bottom side beam, specific procedure of processing are as follows：Cold roll forming unit prepares, and first of roller to the 16th roller is sequentially loaded into cold roll forming unit；Plate cold bending is molded, first to the 6th channel type roller to carrying out continuous bend on the right side of plate, it will be flattened on the left of plate, to carrying out shaping on the right side of plate on the right side of 7th to the 12nd channel type roller, left side type roller is to carrying out clod wash on the left of plate, for the 13rd channel type roller to continuing to bend at left and right sides of plate, the 14th to the 15th shaped steel carries out shaping to plate or so outermost edge, 16th channel type roller is orthopedic to the progress of each side shape of plate, reaches defined geomery.The method for the cold roll forming that the present invention discloses, clod wash processing is carried out by first carrying out clod wash processing to right side, then to left side so that and material free can freely be stretched to the left by right side, so that material is not accumulated, not fold.
Description
Technical field
The present invention relates to a kind of processing method, more particularly to a kind of asymmetric plate continuous cold of container bottom side beam to curve
The method of type.
Background technology
As shown in Figure 1, the cross sectional shape of container bottom side beam is side, singly curved L-shaped opposite side is double curved Z-shaped, this asymmetric
The structure of type is in processing there are certain difficulty, and at present, the asymmetric plate of bottom side beams at Production Container industry raising middle flask bottom is
Using the process of cold stamping bending and molding, this method every time can only one of profile angle of bending, and need be equipped with it is more
A operating personnel, slow there are efficiency, energy consumption is big, it is of high cost the defects of, slow in order to change this production efficiency, energy consumption is big,
The high present situation of personnel cost, also has Some Enterprises to use cold-bending molding technology, relies on cold roll forming unit by gold such as coiled material, bands
Belong in plate feeding multi-pass molding roller and carry out continual transverse curvature, specific section section bar is made, and it is most common at present
The method of cold roll forming is that plate both sides are carried out at the same time with bending processing, this allows for center section because transversely deforming is by outside
Material limits and pulling accumulation causes to accumulate during sheet fabrication, fold, and radius, which is that plate is thinning at the fillet of R, to be lacked
Point.
The content of the invention
Goal of the invention：The shortcomings that to solve in background technology, present invention generally provides a kind of container bottom side beam is asymmetric
The method of the continuous cold roll forming of based plate, carries out clod wash processing so that material by first carrying out clod wash processing to right side, then to left side
Material free can freely be stretched to the left by right side, so that material is not accumulated, not fold.
Technical solution：A kind of method of the continuous cold roll forming of asymmetric plate of container bottom side beam, the bottom side beams are left
Side is L-shaped and right side is zigzag configuration, and four clod wash angles are defined as the first clod wash angle successively from left to right, the second clod wash angle, the 3rd
Clod wash angle and the 4th clod wash angle, specific procedure of processing are as follows：
A. cold roll forming unit prepares：The movable memorial archway in cold roll forming unit on the right side of first of roller is removed first, by the
Mo(u)ld top half roller collars and axle sleeve together is inserted on roll shaft, first of mo(u)ld bottom half roller collars and axle sleeve is inserted on lower roller shaft, so
Movable memorial archway is installed and fixed afterwards, it is ensured that gap is consistent with sheet thickness between mo(u)ld top half roller collars and mo(u)ld bottom half roller collars, weight
Multiple above-mentioned steps complete installation of the second to the 16th roller；
B. cold roll forming：It is 0.8~6mm by thickness, the tablet plate that width is 0.2~0.8m is sent into cold roll forming unit
It is interior, satisfactory bottom side beams are finally obtained by 16 continuous modifications, and 16 continuous modifications are respectively：
First, tablet plate is sent into cold roll forming first of roller of unit, will be carried out on the right side of tablet plate cold for the first time
It is curved, while the three clod wash angles in right side are molded, it is allowed in the wide-angle Z-type elongated, wherein the clod wash angle at the second clod wash angle is
165 °, the clod wash angle at the 3rd clod wash angle is 165 °, and the clod wash angle at the 4th clod wash angle is 172.5 °；
Second to the 6th, the plate after first of clod wash is continuously introduced into the second to the 6th roller, to the three of right side
A clod wash angle carries out further clod wash, increases clod wash angle, wherein the clod wash angle in five rollers of the second clod wash Jiao is respectively
150 °, 135 °, 120 °, 105 °, 97 °, the clod wash angle in five rollers of the 3rd clod wash Jiao is respectively 150 °, 135 °, 120 °,
105 °, 97 °, the clod wash angle in five rollers of the 4th clod wash Jiao is respectively 135 °, 157.5 °, 150 °, 142.5 °, 135 °；
7th to the 12nd, the plate after the 6th clod wash is continuously introduced into the 7th to the 12nd roller, keeps right
The clod wash angle at side the second clod wash angle and the 3rd clod wash angle is constant, and clod wash is carried out to the first clod wash angle in left side, to the of right side
Two clod wash angles, the 3rd clod wash angle and the 4th clod wash angle carry out shaping, wherein the clod wash angle point in six rollers of the first clod wash Jiao
Wei not be 165 °, 145 °, 125 °, 110 °, 100 °, 94 °, the clod wash angle in six rollers of the second clod wash Jiao is respectively 87 °, 90 °,
90 °, 90 °, 90 °, 90 °, the clod wash angle in six rollers of the 3rd clod wash Jiao is respectively 90 °, 90 °, 90 °, 90 °, 90 °, 87 °,
Clod wash angle in 4th clod wash Jiao, six rollers is respectively 127.5 °, 120 °, 112.5 °, 105 °, 97.5 °, 91 °；
13rd, the plate after the 12nd clod wash is sent into the 13rd roller, the left and right sides is carried out for the first time
Overall shaping so that the angle at the first clod wash angle reaches 90 °, and the angle at the second clod wash angle reaches 90 °, the angle at the 3rd clod wash angle
Reach 87 °, the angle at the 4th clod wash angle reaches 87 °；
14th, the plate after the 13rd clod wash is sent into the 14th roller, the left and right sides is carried out second
Overall shaping so that the angle at the first clod wash angle reaches 88.5 °, and the angle at the second clod wash angle reaches 90 °, the angle at the 3rd clod wash angle
Degree reaches 90 °, and the angle at the 4th clod wash angle reaches 87 °；
15th, the plate after the 14th clod wash is sent into the 15th roller, third time is carried out to the left and right sides
Overall shaping so that the angle at the first clod wash angle reaches 90 °, and the angle at the second clod wash angle reaches 90 °, the angle at the 3rd clod wash angle
Reach 90 °, the angle at the 4th clod wash angle reaches 90 °；
16th, the plate after the 15th clod wash is sent into the 16th roller, shapes, makes to the left and right sides
The angle at the first clod wash angle reaches 90 °, the angle at the second clod wash angle reaches 90 °, and the angle at the 3rd clod wash angle reaches 90 °, the
The angle at four clod wash angles reaches 90 °.
Beneficial effect：A kind of side of the disclosed continuous cold roll forming of the asymmetric plate of container bottom side beam
Method, the passage to advance by the use of the roll gap gap between upper mo(u)ld bottom half roller as constraint plate, realizes the shaping to plate, and when shaping is first
Clod wash basic forming is carried out to complicated right side, then carries out cold roll forming to left side again, while clod wash shaping is carried out to right side,
Finally orthopedic to overall progress, left side does not process in right side forming process, this allows for left side plate and does not stress laterally,
And can be stretched to the left with free freedom, so as to eliminate in the prior art because transversely deforming is limited by two side positions again
And produce caused by drawing accumulation that material became uneven is even or the phenomenon of fold.
Brief description of the drawings
Fig. 1 is the schematic cross-section of bottom side beams in the present invention；
Fig. 2 is the continuous modification roller floral diagram of bottom side beams of the present invention；
Fig. 3 is that cold-bending forming machine assembles roller schematic diagram in the present invention；
Fig. 4 is the schematic diagram of first of roller in the present invention；
Fig. 5 is the schematic diagram of the 16th roller in the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention will be described in detail.
As shown in Fig. 1~5, a kind of disclosed continuous cold roll forming of the asymmetric plate of container bottom side beam
Method, specifically comprises the following steps：
A. cold roll forming unit prepares：As shown in figure 3, the activity in cold roll forming unit on the right side of first of roller is removed first
Memorial archway 4, first of mo(u)ld top half roller collars 1 and axle sleeve 2 are inserted on upper roll shaft 3, by first of mo(u)ld bottom half roller collars 5 and axle sleeve 6
It is inserted on lower roller shaft 7, then movable memorial archway 4 is installed and fixed, it is ensured that gap between mo(u)ld top half roller collars and mo(u)ld bottom half roller collars
Consistent with sheet thickness, repeat the above steps the installation for completing second to the 16th roller；
B. cold roll forming：It is 0.8~6mm by thickness, the tablet plate that width is 0.2~0.8m is sent into cold roll forming unit
It is interior, satisfactory bottom side beams are finally obtained by 16 continuous modifications, and 16 continuous modifications are respectively：
As shown in Fig. 2, first（A in Fig. 2）, tablet plate is sent into cold roll forming first of roller of unit, to tablet plate
Material right side carries out first time clod wash, while is molded the three clod wash angles in right side, is allowed in the wide-angle Z-type elongated, wherein second is cold
The clod wash angle of bent angle is 165 °, and the clod wash angle at the 3rd clod wash angle is 165 °, and the clod wash angle at the 4th clod wash angle is 172.5 °；
Second（B in Fig. 2）, the plate after first of clod wash is sent into second roller, to three clod wash angles on right side into
The further clod wash of row, increases clod wash angle, wherein the clod wash angle at the second clod wash angle is 150 °, the clod wash angle at the 3rd clod wash angle
For 150 °, the clod wash angle at the 4th clod wash angle is 165 °；
3rd（C in Fig. 2）, the plate after second clod wash is sent into the 3rd roller, to three clod wash angles on right side into
The further clod wash of row, increases clod wash angle, wherein the clod wash angle at the second clod wash angle is 135 °, the clod wash angle at the 3rd clod wash angle
For 135 °, the clod wash angle at the 4th clod wash angle is 157.5 °；
4th（D in Fig. 2）, the plate after the 3rd clod wash is sent into the 4th roller, to three clod wash angles on right side into
The further clod wash of row, increases clod wash angle, wherein the clod wash angle at the second clod wash angle is 120 °, the clod wash angle at the 3rd clod wash angle
For 120 °, the clod wash angle at the 4th clod wash angle is 150 °；
5th（E in Fig. 2）, the plate after the 4th clod wash is sent into the 5th roller, to three clod wash angles on right side into
The further clod wash of row, increases clod wash angle, wherein the clod wash angle at the second clod wash angle is 105 °, the clod wash angle at the 3rd clod wash angle
For 105 °, the clod wash angle at the 4th clod wash angle is 142.5 °；
6th（F in Fig. 2）, the plate after the 5th clod wash is sent into the 6th roller, to three clod wash angles on right side into
The further clod wash of row, increases clod wash angle, wherein the clod wash angle at the second clod wash angle is 97 °, the clod wash angle at the 3rd clod wash angle
For 97 °, the clod wash angle at the 4th clod wash angle is 135 °；
7th（G in Fig. 2）, the plate after the 6th clod wash is sent into the 7th roller, to three clod wash angles on right side
Further clod wash is carried out, increases clod wash angle, first time clod wash is carried out to the first clod wash angle in left side, wherein the first clod wash angle
Clod wash angle is 165 °, and the clod wash angle at the second clod wash angle is 87 °, and the clod wash angle at the 3rd clod wash angle reaches required 90 ° of angle,
The clod wash angle at the 4th clod wash angle is 127.5 °；
8th（H in Fig. 2）, the plate after the 7th clod wash is sent into the 8th roller, to left side the first clod wash angle and
Right side second, the 4th clod wash angle carry out further clod wash, wherein the clod wash angle at the first clod wash angle is 145 °, the second clod wash angle reaches
To required 90 ° of angle, 90 ° of the 3rd clod wash angle holding is constant, and the clod wash angle at the 4th clod wash angle is 120 °；
9th（I in Fig. 2）, the plate after the 8th clod wash is sent into the 9th roller, to left side the first clod wash angle and
The 4th clod wash angle of right side carries out further clod wash, wherein the clod wash angle at the first clod wash angle is 125 °, second and third clod wash angle
90 ° of holding is constant, and the clod wash angle at the 4th clod wash angle is 112.5 °；
Tenth（J in Fig. 2）, the plate after the 9th clod wash is sent into the tenth roller, to left side the first clod wash angle and
The 4th clod wash angle of right side carries out further clod wash, wherein the clod wash angle at the first clod wash angle is 110 °, second, third clod wash angle is protected
Hold 90 ° it is constant, the clod wash angle at the 4th clod wash angle is 105 °；
10th one（K in Fig. 2）, the plate after the tenth clod wash is sent into the 10th one of roller, to the first clod wash of left side
Angle and the 4th clod wash angle of right side carry out further clod wash, wherein the clod wash angle at the first clod wash angle is 100 °, second, third clod wash
90 ° of angle holding is constant, and the clod wash angle at the 4th clod wash angle is 97.5 °；
12nd（L in Fig. 2）, the plate after the 10th one of clod wash is sent into the 12nd roller, it is cold to left side first
Bent angle and the 4th clod wash angle of right side carry out further clod wash, further integer are carried out to the 3rd clod wash angle, wherein the first clod wash angle
Clod wash angle be 94 °, the second clod wash angle keep 90 ° it is constant, the clod wash angle at the 3rd clod wash angle is 87 °, the 4th clod wash angle
Clod wash angle is 91 °；
13rd（M in Fig. 2）, the plate after the 12nd clod wash is sent into the 13rd roller, it is cold to left side first
Bent angle and the 4th clod wash angle of right side carry out further clod wash, wherein the clod wash angle at the first clod wash angle is 90 °, the second clod wash angle is protected
Hold 90 ° it is constant, the 3rd clod wash angle keep 87 ° it is constant, the clod wash angle at the 4th clod wash angle is 87 °；
14th（N in Fig. 2）, the plate after the 13rd clod wash is sent into the 14th roller, it is cold to left side first
Bent angle and the three, the 4th clod wash angle of right side carry out further integer, wherein the clod wash angle at the first clod wash angle is 88.5 °, second
90 ° of clod wash angle holding is constant, and the clod wash angle at the 3rd clod wash angle is 90 °, and the clod wash angle at the 4th clod wash angle is 87 °；
15th（O in Fig. 2）, by after the 14th clod wash plate be sent into the 15th roller in, to the left and right sides into
Row entirety shaping so that the first, the 4th clod wash angle reaches required 90 °, and 90 ° of second, third clod wash angle holding is constant；
16th（P in Fig. 2）, by after the 15th clod wash plate be sent into the 16th roller in, to the left and right sides into
The final overall shaping of row so that first to fourth clod wash angle entirely reaches required 90 °, and so far all Cold Bendings are completed,
It can discharge；
In above-mentioned steps, continuous bend is carried out to plate right side to the 6th channel type roller first in cold roll forming unit, it is right
Flattened on the left of plate, gradually increase is big for the angle of bend at three angles in Cold Bending, second clod wash angle when the 6th
And the 3rd nearly right angle of clod wash corner connection, the 4th clod wash angle continue to reduce, and not bending process on the left of plate so that its be laterally in from
By state, so as to mitigate the fold caused by horizontal material stacking；To plate on the right side of 7th to the 12nd channel type roller
Right side carries out shaping so that the 4th nearly right angle of clod wash corner connection, type roller left side is to carrying out clod wash on the left of plate so that the first clod wash angle
Close to right angle；The plate left and right sides is continued to bend on the right side of 13rd channel type roller, makes its four clod washes angular at a right angle, the 14th
Road carries out shaping to the 15th shaped steel to plate or so outermost edge so that upright shape transition bending, to offset the curved of plate
Return bullet so that plate reaches real plastic deformation, and the 16th channel type roller carries out plate curbside shape orthopedic so that each
Clod wash angle is at a right angle, reaches defined geomery.
The processing method is equally applicable to the processing of the asymmetric plate of straight slot of container.
The technology contents and technical characteristic of the present invention have revealed that as above, but those skilled in the art still may base
Make a variety of replacements and modification without departing substantially from spirit of the present invention in enlightenment and the announcement of the present invention, therefore, the scope of the present invention
The revealed content of embodiment should be not limited to, and various replacements and modification without departing substantially from the present invention should be included, and is this patent Shen
Please claim covered.
Claims (1)
1. a kind of method of the continuous cold roll forming of asymmetric plate of container bottom side beam, the bottom side beams left side is right for L-shaped
Side is zigzag configuration, and four clod wash angles are defined as the first clod wash angle, the second clod wash angle, the 3rd clod wash angle and successively from left to right
Four clod wash angles, specific procedure of processing are as follows：
A. cold roll forming unit prepares：The movable memorial archway in cold roll forming unit on the right side of first of roller is removed first, by first
Mo(u)ld top half roller collars and axle sleeve be inserted on roll shaft, first of mo(u)ld bottom half roller collars and axle sleeve are inserted on lower roller shaft, then will
Movable memorial archway is installed and fixed, it is ensured that gap is consistent with sheet thickness between mo(u)ld top half roller collars and mo(u)ld bottom half roller collars, in repetition
State step and complete installation of the second to the 16th roller；
B. cold roll forming：It is 0.8~6mm by thickness, the tablet plate that width is 0.2~0.8m is sent into cold roll forming unit,
Satisfactory bottom side beams are finally obtained by 16 continuous modifications, and 16 continuous modifications are respectively：
First, tablet plate is sent into cold roll forming first of roller of unit, first time clod wash will be carried out on the right side of tablet plate, together
When the three clod wash angles in shaping right side, be allowed in the wide-angle Z-type elongated, wherein the clod wash angle at the second clod wash angle is 165 °, the
The clod wash angle at three clod wash angles is 165 °, and the clod wash angle at the 4th clod wash angle is 172.5 °；
Second to the 6th, the plate after first of clod wash is continuously introduced into the second to the 6th roller, it is cold to three of right side
Bent angle carries out further clod wash, increases clod wash angle, wherein the clod wash angle in five rollers of the second clod wash Jiao be respectively 150 °,
135 °, 120 °, 105 °, 97 °, the clod wash angle in five rollers of the 3rd clod wash Jiao is respectively 150 °, 135 °, 120 °, 105 °,
97 °, the clod wash angle in five rollers of the 4th clod wash Jiao is respectively 135 °, 157.5 °, 150 °, 142.5 °, 135 °；
7th to the 12nd, the plate after the 6th clod wash is continuously introduced into the 7th to the 12nd roller, to the of left side
One clod wash angle carries out clod wash, and to the second clod wash angle on right side, the 3rd clod wash angle and the 4th clod wash angle carry out shaping, wherein first is cold
Clod wash angle of the bent angle in six rollers is respectively 165 °, 145 °, 125 °, 110 °, 100 °, 94 °, six rollers of the second clod wash Jiao
In clod wash angle be respectively 87 °, 90 °, 90 °, 90 °, 90 °, 90 °, clod wash angle in six rollers of the 3rd clod wash Jiao difference
For 90 °, 90 °, 90 °, 90 °, 90 °, 87 °, the clod wash angle in six rollers of the 4th clod wash Jiao is respectively 127.5 °, 120 °,
112.5°、105°、97.5°、91°；
13rd, the plate after the 12nd clod wash is sent into the 13rd roller, the left and right sides is carried out overall for the first time
Shaping so that the angle at the first clod wash angle reaches 90 °, and the angle at the second clod wash angle reaches 90 °, and the angle at the 3rd clod wash angle reaches
87 °, the angle at the 4th clod wash angle reaches 87 °；
14th, the plate after the 13rd clod wash is sent into the 14th roller, second of entirety is carried out to the left and right sides
Shaping so that the angle at the first clod wash angle reaches 88.5 °, and the angle at the second clod wash angle reaches 90 °, and the angle at the 3rd clod wash angle reaches
To 90 °, the angle at the 4th clod wash angle reaches 87 °；
15th, the plate after the 14th clod wash is sent into the 15th roller, it is overall to carry out third time to the left and right sides
Shaping so that the angle at the first clod wash angle reaches 90 °, and the angle at the second clod wash angle reaches 90 °, and the angle at the 3rd clod wash angle reaches
90 °, the angle at the 4th clod wash angle reaches 90 °；
16th, the plate after the 15th clod wash is sent into the 16th roller, is shaped to the left and right sides so that the
The angle at one clod wash angle reaches 90 °, and the angle at the second clod wash angle reaches 90 °, and the angle at the 3rd clod wash angle reaches 90 °, and the 4th is cold
The angle of bent angle reaches 90 °.
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| CN107127252B (en) * | 2017-06-19 | 2018-12-28 | 南通聚顺机电有限公司 | The processing mold group of container bottom side beam and the processing technology of container bottom side beam |
| CN107186493A (en) * | 2017-07-24 | 2017-09-22 | 西莱特电梯（中国）有限公司 | Elevator door pocket production line |
| CN110005189B (en) * | 2019-04-18 | 2023-08-01 | 安阳融达实业有限公司 | Building plane template and preparation device thereof |
| CN113210469A (en) * | 2021-05-21 | 2021-08-06 | 南通职业大学 | Cold roll forming method for through groove symmetrical type plate |
| CN114160637A (en) * | 2022-02-15 | 2022-03-11 | 常州巨旋机械制造有限公司 | Metal plate continuous bending forming mechanism, forming process and plate |
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| SU1079334A1 (en) * | 1982-04-23 | 1984-03-15 | Украинский Ордена Трудового Красного Знамени Научно-Исследовательский Институт Металлов | Method of producing bent asymmetric sections |
| RU2148450C1 (en) * | 1998-12-08 | 2000-05-10 | ОАО "Магнитогорский металлургический комбинат" | Method for making bent rolled bars |
| JP3892761B2 (en) * | 2002-05-31 | 2007-03-14 | 株式会社ブリヂストン | Method for producing metal core used for run-flat tire |
| CN101176892A (en) * | 2006-11-10 | 2008-05-14 | 中国国际海运集装箱(集团)股份有限公司 | Method for shaping container bottom cross beam and preparing method |
| KR101139232B1 (en) * | 2009-09-09 | 2012-04-20 | 주식회사 미륭산업 | Method for manufacturing all in one drainage trench using roll forming and the drainage trench |
| KR101238442B1 (en) * | 2010-03-29 | 2013-02-28 | 주식회사 미륭산업 | Section steel of curtaun wall fixing for apparatus and method for manufacturing the same by roll forming |
| CN101954397A (en) * | 2010-05-31 | 2011-01-26 | 南京万汇钢板桩有限公司 | Manufacture method of Z-shaped steel sheet pile through continuous cold roll forming |
| CN102489569A (en) * | 2011-12-26 | 2012-06-13 | 南京万汇新材料科技有限公司 | Continuous cold roll forming method for stainless steel vehicle roof boundary beam |
| CN102513473A (en) * | 2011-12-26 | 2012-06-27 | 南京万汇新材料科技有限公司 | Continuous roller type cold-roll forming process for stainless steel covering panels of car bodies |
| CN102581165A (en) * | 2012-02-09 | 2012-07-18 | 南京万汇新材料科技有限公司 | Continuous cold-roll forming method for stainless steel side wall bottom edge beam |
| CN104727274A (en) * | 2015-02-12 | 2015-06-24 | 南京天润型钢有限公司 | Stainless steel F-type water stop strip and manufacturing method thereof |
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