CN104727274B - A kind of rustless steel F type sealing piece and manufacture method thereof - Google Patents
A kind of rustless steel F type sealing piece and manufacture method thereof Download PDFInfo
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Abstract
The invention discloses a kind of rustless steel F type sealing piece and manufacture method thereof, the manufacture method of rustless steel F type sealing piece includes longitudinal shearing strip, uncoiling leveling, pasting protective film, cold roll forming and five steps of clod wash shaping, cold roll forming is to be deformed by passage roll bending continuously by roll by the steel band sticking protecting film, in employing, the paired deformation roller of lower roll coordinates and guides edger roll and edge-on roller and straightening mechanism, first three reinforcements of molding sealing piece and middle part retraction slot, edge turning straight portion on the left of reshaping sealing piece, then reshaping sealing piece left and right sides protection edge, clod wash shaping is that the product obtaining cold roll forming step carries out finishing.The manufacture method of the present invention is by separately formed to each angle of bend of F type sealing piece so that the size of every part is more accurate, and actual adjust also can be more convenient.The present invention, at the design of technique, the aspect such as selection of equipment, well overcomes prior art bending and adds the various defects that welding process bands is come.
Description
Technical field
The present invention relates to a kind of sealing piece and manufacture method thereof, particularly relate to a kind of rustless steel F type sealing piece and manufacture method thereof, belong to sealing piece production technical field.
Background technology
Sealing piece is very extensive in numerous areas application such as seepage control of dam water sealing structures, and traditional sealing piece uses red copper material to make, but red copper sealing piece in use exposes problems with and changes and defect: first, and intensity is low, is susceptible to end tear；Second, material is softer to be easily deformed, construction inconvenience；3rd, red copper is expensive, high cost.Therefore rustless steel sealing piece arises at the historic moment, progressively instead of traditional red copper sealing piece.Stainless mechanical property and intensity are all high than red copper, and material price is the most relatively inexpensive, so the sealing piece using rustless steel to make can well overcome the three above defect of red copper sealing piece, and the precedent that this type of rustless steel sealing piece has used, thus red copper sealing piece is replaced to be feasible with rustless steel sealing piece.
Since rustless steel sealing piece is can be adopted, therefore the most in good time the creating of the cold bending process of rustless steel sealing piece.But the sealing piece of prior art is made jointly by bending and welding, there is many unexpected difficulties: first, and stainless steel material hardness height own is unfavorable for bending, and resilience is big；Second, the spread material width of general sealing piece is relatively big, and after molding, size wide cut is the biggest, and general bending unit does not reaches Width x Height requirement, and the cost increasing bending equipment is huge；3rd, bending and welding procedure easily make rustless steel produce the injurous defects such as extra scuffing indentation, and bending limited length, welding is also difficult to ensure that the concordance of properties of product.Though rustless steel F type sealing piece structure can preferably reach the design requirement of the engineerings such as dykes and dams, having, due to rustless steel F type sealing piece, the characteristic that asymmetric and bent angle number is relatively more, the cross sectional shape of its complexity also brings an a lot of difficult problem for production and processing.Traditional F type sealing piece mode of production is that bending completes jointly with welding: due to the limitation of bending equipment, typically can only the short sealing piece of bending length, Forging Process also ceaselessly to convert radius bend, so efficiency is the lowest, and it is difficult to ensure that the precision of product, the scuffing cut of stainless steel surfaces can also be caused simultaneously in Forging Process；In welding process, the most also have very to defect, soldering stainless steel needs the welding rod of special substance, butt welded seam is also needed to detect and detect a flaw after having welded, detection needs specific equipment, adding input, and traditional welding procedure is also difficult to reach two being fully engaged even more than sealing piece, the performance of the sealing piece after welding is also difficult to ensure that unanimously simultaneously.Therefore the bending using routine adds welding procedure and produces, it may appear that be much difficult to the defect predicted so that difficulty of construction strengthens, and product can shorten service life, and then increases cost.The most also there is the rustless steel sealing piece using cold bending process to produce simple in construction, but the F type sealing piece pair cross-section of complexity and technology require it is the highest, the cold bending process of prior art cannot produce, and a kind of brand-new rustless steel F type sealing piece production method is badly in need of being developed.
Summary of the invention
Manufacture difficulty in order to overcome prior art rustless steel sealing piece to exist, technology is required high defect, it is an object of the invention to provide the manufacture method of a kind of rustless steel F type sealing piece and this rustless steel F type sealing piece.
The rustless steel F type sealing piece of the present invention adopts the following technical scheme that a kind of rustless steel F type sealing piece, it includes horizontally disposed base, there is in the middle part of base the retraction slot of inverted U-shaped, having on the right side of base with base is the right side protection edge of 45 ° of angles, having on the left of base with base is the left side protection edge of 90 ° of angles, the end of left side protection edge is provided with turning straight flange, turning straight flange has 90 ° of bent angles, the reinforcement of three curved bulge-structures it is additionally provided with on described sealing piece, two of which reinforcement is arranged on base and lays respectively at the both sides of retraction slot, another reinforcement is arranged on the protection edge of left side.
F type sealing piece section of the present invention is more complicated, and the horizontal wide cut size in F type sealing piece cross section can reach more than 500mm, and overall depth of section size can reach more than 100mm；F type sealing piece of the present invention has also broken the bilateral symmetry of conventional sealing piece, i.e. product middle part is a thin and narrow retraction slot, retraction slot both sides are respectively arranged with a reinforcement, leftmost side protection edge is crotch straight flange with a reinforcement and certain angle the most simultaneously, and right side is certain angle elongated straight flange obliquely, length is up to more than 200mm, and the bent angle of product cross section is many and filleted corner R is the biggest.The whole Cross section Design of sealing piece of the present invention has three circular arc reinforcements, and purpose is contemplated to allow elongated web, too high vertical edges lower limb in forming process, it is to avoid produce wave.
The manufacture method of the rustless steel F type sealing piece of the present invention adopts the following technical scheme that the manufacture method of a kind of rustless steel F type sealing piece; it includes longitudinal shearing strip, uncoiling leveling, pasting protective film, cold roll forming and five steps of clod wash shaping; longitudinal shearing strip be according to rustless steel sealing piece needed for thickness and product size select thickness and the width of strip steel respectively, entire volume strip steel is placed on the slitting equipment with protection device and carries out expecting wide cutting；Uncoiling leveling is by level(l)ing machine, flattens the steel band after slitting；Pasting protective film is all to stick protecting film inside and outside the steel band after flattening slitting；Cold roll forming is to be deformed by passage roll bending continuously by roll by the steel band sticking protecting film; the deformation roller using upper and lower roll paired coordinates guiding edger roll and edge-on roller and straightening mechanism; first three reinforcements of molding sealing piece and middle part retraction slot; edge turning straight portion on the left of reshaping sealing piece, then reshaping sealing piece left and right sides protection edge；Clod wash shaping is that the product obtaining cold roll forming step carries out finishing.
The deformation process of described cold roll forming and clod wash shaping has 23 passage operations, cold roll forming starts to the 3rd passage operation to terminate from the 23rd passage operation, wherein the 23rd passage to the 17th passage is three reinforcements of molding and middle part retraction slot, 16th passage to the 11st passage is edge turning straight portion on the left of molding, angle is 90 °, 10th passage to the 3rd passage is shaped article left and right sides protection edge, and left side protection edge is 90 °, right side protection edge is 45 °；Clod wash shaping starts to the 1st passage operation to terminate from the 2nd passage operation, and the 2nd passage was bend, and the 1st passage is finishing pass.
Described 16th passage is in the 13rd passage, the 10th passage to the 7th passage, and every adjacent twice use edger roll to guide product and assistant formation between taking second place；In 11st, 4,3 three passages, using edge-on roller, right side on the left of product is normal roll-in pass.
Between described 16th to 13 passage, the edger roll angle of assistant formation is respectively 15 °, 25 °, 50 °；Between 10th passage to the 7th passage, the edger roll angle of assistant formation is respectively 10 °, 15 °, 20 °.
Described 23rd passage is reinforcement molding, and in the middle part of described 22nd passage to the 17th passage, the angle change of retraction slot is followed successively by: 24 °, 52 °, 68 °, 78 °, 85 °, 90 °.
Described 16th passage is followed successively by the angle change of the 11st passage molding left hand corner straight flange: 10 °, 20 °, 40 °, 60 °, 80 °, 90 °.
Described 10th passage is followed successively by the angle change of the 3rd passage molding both sides protection edge: 6 ° of right side, 10 ° of left side, 12 ° of right side, 30 ° of left side, 22 ° of right side, 45 ° of left side, 30 ° of right side, 60 ° of left side, 38 ° of right side, 70 ° of left side, 42 ° of right side, 80 ° of left side, 44 ° of right side, 89 ° of left side, 45 ° of right side, 90 ° of left side.
It is 47 ° of right side, 92 ° of left side that described 2nd passage crosses the angle of bend time, and the angle of the 1st passage finishing pass is 45 ° of right side, 90 ° of left side.
After described clod wash shaping step, re-use flatness and the torsion resistance of straightener regulation product.
The invention has the beneficial effects as follows: the manufacture method of the present invention is by separately formed to each angle of bend of F type sealing piece so that the size of every part is more accurate, actual adjust also can be more convenient；The whole Cross section Design of sealing piece of the present invention has three circular arc reinforcements, and purpose is contemplated to allow elongated web, too high vertical edges lower limb in forming process, it is to avoid produce wave；Because sealing piece both sides of the edge part is asymmetric, so using the change of different angles to be designed, this ensure that the close of both sides forming force size, in nipping process, unnecessary extruding and stretching, edge wave will be brought to disappear therewith to strip steel；On hole type design, use enclosed hole, equally reduce the generation of side wave.The present invention selects rational unit equipment, long for the asymmetric of product and two ends free margins again, the easy plastic deformation of conventional production, cause the problems such as side wave scuffing, carry out rational roll pass and roller parameter design, finally by continuously by roll bending deformation and the follow-up shaping aligning of passage, produce qualified sealing piece.At the design of technique, the aspect such as selection of equipment, well overcome prior art bending and add the various defects that welding process bands is come.
Further, the manufacture method of rustless steel F type sealing piece of the present invention uses continuous print 23 passage roller type cold bending shaping and cold-bending deformation operation, by the roll-in by passage, coordinate edger roll and edge-on roller and straightening mechanism again, producing qualified sealing piece, the method for the present invention is possible not only to produce any specification and the sealing piece of length, and uses disposable roll-forming that product surface can be allowed cleaner and tidier, the performance of material preferably remains behind, and the concordance of product is guaranteed.Use the mode first crossing the curved molding of finish rolling again, carry out the shaping of product, to reach best Product Precision requirement.
Further, use edger roll product to be guided and assistant formation, strip steel can be made to smooth and smoothly enter passage next time, simultaneously work as revising the rolling centerline of deviation and effect for molding.
Further, straightener is used can to regulate the other defects such as the product plane degree produced and torsion resistance, it is thus achieved that best product.
Accompanying drawing explanation
Fig. 1 is the structural representation of rustless steel F type sealing piece of the present invention；
Fig. 2 is the roller floral diagram of the manufacture method of rustless steel F type sealing piece of the present invention；
Fig. 3 is that manufacture method the 23rd passage of rustless steel F type sealing piece of the present invention is to the 17th passage angular distortion artwork；
Fig. 4 is that manufacture method the 16th passage of rustless steel F type sealing piece of the present invention is to the 11st passage angular distortion artwork；
Fig. 5 is that manufacture method the 10th passage of rustless steel F type sealing piece of the present invention is to the 3rd passage angle change artwork；
Fig. 6 is that manufacture method the 2nd passage of rustless steel F type sealing piece of the present invention is to the 1st passage shaping process figure；
Fig. 7 is that manufacture method the 16th passage of rustless steel F type sealing piece of the present invention is to the 13rd passage, the edger roll assistant formation artwork of the 10th passage to the 7th passage；
Fig. 8 is that manufacture method the 23rd passage of rustless steel F type sealing piece of the present invention joins roller figure to the 17th passage reinforcement and retraction slot；
Fig. 9 is that manufacture method the 16th passage of rustless steel F type sealing piece of the present invention joins roller figure to edge turning straight flange on the left of the 11st road；
Figure 10 is that manufacture method the 10th passage of rustless steel F type sealing piece of the present invention joins roller figure to the 1st passage both sides protection edge and shaping.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The structure of the embodiment of rustless steel F type sealing piece of the present invention is as shown in Figure 1, the rustless steel F type sealing piece of the present embodiment includes horizontally disposed base 1, there is in the middle part of base 1 retraction slot 5 of inverted U-shaped, having on the right side of base 1 with base is the right side protection edge 2 of 45 ° of angles, having on the left of base 1 with base is the left side protection edge 3 of 90 ° of angles, the end of left side protection edge 3 is provided with turning straight flange 4, there are on turning straight flange 4 90 ° of bent angles, the reinforcement 6 of three curved bulge-structures it is additionally provided with on described sealing piece, two of which reinforcement 6 is arranged on base 1 and lays respectively at the both sides of retraction slot 5, another reinforcement 6 is arranged on the protection edge 3 of left side.
A kind of embodiment of the manufacture method of rustless steel F type sealing piece of the present invention includes longitudinal shearing strip, uncoiling leveling, pasting protective film, cold roll forming and five steps of clod wash shaping, these five steps particularly as follows:
(1) longitudinal shearing strip: select thickness and the width of strip steel according to the thickness needed for rustless steel sealing piece and product size respectively; employing belt steel thickness is 1.0mm, material is SUS304L, is placed on the slitting equipment with protection device by entire volume strip steel and carries out expecting wide cutting；
(2) uncoiling leveling: flatten the steel band after slitting by level(l)ing machine, specifically open the strip steel that slitting is good on uncoiler, through level(l)ing machine after uncoiling, the defect such as camber in leveling strip, surface wave；
(3) pasting protective film: all stick protecting film inside and outside the steel band after flattening slitting; can avoid stainless steel material is surface tear; protecting film is installed on film sticking apparatus; after suitably adjusting height and width; make protecting film straight; being attached to steel strip surface uniformly, during pad pasting, there is bubble and buckling phenomena in protecting film to be prevented；
(4) cold roll forming: the steel band sticking protecting film is deformed by passage roll bending continuously by roll; the deformation roller using upper and lower roll paired coordinates guiding edger roll and edge-on roller and straightening mechanism; first three reinforcements of molding sealing piece and middle part retraction slot; edge turning straight portion on the left of reshaping sealing piece, then reshaping sealing piece left and right sides protection edge；
(5) clod wash shaping: the product obtaining cold roll forming step carries out finishing.
The deformation process of cold roll forming and clod wash shaping has 23 passage operations, and this 23 passage operation roller floral diagram is as in figure 2 it is shown, cold roll forming starts to the 3rd passage operation to terminate from the 23rd passage operation, and clod wash shaping starts to the 1st passage operation to terminate from the 2nd passage operation.
23rd passage to the 17th passage is three reinforcements of molding and middle part retraction slot, the angular distortion of the 23rd passage to the 17th passage is as shown in Figure 3,23rd passage to the 17th passage reinforcement and retraction slot join roller figure as shown in the figure, 23rd passage is reinforcement molding, reinforcement arc radius R angle directly takes R10, and in the middle part of the 22nd passage to the 17th passage, the angle change of retraction slot is followed successively by: 24 ° → 52 ° → 68 ° → 78 ° → 85 ° → 90 °.
After three reinforcements and retraction slot molding complete, 16th passage to the 11st passage is edge turning straight portion on the left of molding, finally making turning straight flange angle is 90 °, the angular distortion of the 16th passage to the 11st passage is as shown in Figure 4, on the left of 16th road to the 11st road, edge turning straight flange joins roller figure as it is shown in figure 9, the angle change of the 16th passage to the 11st passage molding left hand corner straight flange is followed successively by: 10 ° → 20 ° → 40 ° → 60 ° → 80 ° → 90 °.
10th passage to the 3rd passage is shaped article left and right sides protection edge, the angular distortion of the 10th passage to the 3rd passage is as shown in Figure 5, finally to make left side protection edge be 90 °, right side protection edge is 45 °, and the 10th passage is followed successively by the angle change of the 3rd passage molding both sides protection edge: 45 ° of right side, 90 ° of 44 ° → left side, 89 ° of right sides, 42 ° → left side, 80 ° of right sides, 38 ° → left side, 70 ° of right sides, 30 ° → left side, 60 ° of right sides, 22 ° → left side, 45 ° of right sides, 12 ° → left side, 30 ° of right sides, 6 ° → left side, 10 ° of right sides, left side.
In order to make, strip steel is smooth smoothly enters passage next time, simultaneously work as revising the rolling centerline of deviation and effect for molding, 16th passage is in the 13rd passage, the 10th passage to the 7th passage, every adjacent twice use edger roll to guide product and assistant formation between taking second place, edger roll assistant formation technique is as shown in Figure 7, between 16th to 13 passage, the edger roll angle of assistant formation is respectively 15 °, 25 °, 50 °, and between the 10th passage to the 7th passage, the edger roll angle of assistant formation is respectively 10 °, 15 °, 20 °；In 11st, 4,3 three passages, using edge-on roller, right side on the left of product is normal roll-in pass.
As shown in Figure 6, the 2nd passage was bend to clod wash shaping process, and it is 47 ° of right side, 92 ° of left side that the 2nd passage crosses the angle of bend time, and the 1st passage is finishing pass, and the angle of the 1st passage finishing pass is 45 ° of right side, 90 ° of left side.10th passage joins roller figure as shown in Figure 10 to the 1st passage both sides protection edge and shaping.
If desired, after clod wash shaping step, re-use flatness and the torsion resistance of straightener regulation product.
F type sealing piece of the present invention uses stainless steel, the performance of each side significantly improves, with sealing piece compare, F type sealing piece section of the present invention is more complicated, the horizontal wide cut size in F type sealing piece cross section can reach more than 500mm, and overall depth of section size can reach more than 100mm；F type sealing piece of the present invention has also broken the bilateral symmetry of conventional sealing piece, i.e. product middle part is a thin and narrow retraction slot, retraction slot both sides are respectively arranged with a reinforcement, the leftmost side is crotch straight flange with a reinforcement and certain angle the most simultaneously, and right side is certain angle elongated straight flange obliquely, length is up to more than 200mm, and the bent angle of product cross section is many and filleted corner R is the biggest.
The rustless steel F type sealing piece manufacture method of the present invention selects rational unit equipment, long for the asymmetric of product and two ends free margins again, the easy plastic deformation of conventional production, cause the problems such as side wave scuffing, carry out rational roll pass and roller parameter design, finally by continuously by roll bending deformation and the follow-up shaping aligning of passage, produce qualified sealing piece.By the rustless steel F type sealing piece manufacture method of the present invention, can solve that prior art use bending to add difficulty of construction that welding process bands comes is big, product service life is short, cost increases problem, the present invention is separately formed by each angle of bend, the size making every part is more accurate, and actual adjustment is got up also can be more convenient；The whole Cross section Design of sealing piece of the present invention has three circular arc reinforcements, and purpose is contemplated to allow elongated web, too high vertical edges lower limb in forming process, it is to avoid produce wave；Because sealing piece both sides of the edge part is asymmetric, so using the change of different angles to be designed, this ensure that the close of both sides forming force size, in nipping process, unnecessary extruding and stretching, edge wave will be brought to disappear therewith to strip steel；On hole type design, use enclosed hole, equally reduce the generation of side wave.
The manufacture method of rustless steel F type sealing piece of the present invention uses continuous print roller type cold bending shaping, by the roll-in by passage, coordinate edger roll and edge-on roller and straightening mechanism again, produce qualified sealing piece, the method of the present invention is possible not only to produce any specification and the sealing piece of length, and using disposable roll-forming that product surface can be allowed more clean and tidy, the performance of material preferably remains behind, and the concordance of product is guaranteed.At the design of technique, the aspect such as selection of equipment, well overcome prior art bending and add the various defects that welding process bands is come.
Above-described embodiment is the manufacture method one preferred embodiment of rustless steel F type sealing piece of the present invention, in other embodiments of the invention, in the deformation process of cold roll forming and clod wash shaping, the quantity of each procedure can select the most flexibly, as long as three reinforcements of first molding sealing piece and middle part retraction slot, edge turning straight portion on the left of reshaping sealing piece, last reshaping sealing piece left and right sides protection edge.
Although the most embodiments of the present invention being described in detail, but the invention is not restricted to above-mentioned embodiment.Replacement and the change that the scope of the present invention that appended claim is limited comprises all equivalents.
The NM part of the present invention is the most same as the prior art maybe can utilize prior art to be realized.
Claims (10)
1. a rustless steel F type sealing piece, it is characterized in that: it includes horizontally disposed base (1), middle part, base (1) has the retraction slot (5) of inverted U-shaped, it is the right side protection edge (2) of 45 ° of angles that right side, base (1) has with base, it is the left side protection edge (3) of 90 ° of angles that left side, base (1) has with base, the end in left side protection edge (3) is provided with turning straight flange (4), turning straight flange (4) has 90 ° of bent angles, the reinforcement (6) of three curved bulge-structures it is additionally provided with on described sealing piece, two of which reinforcement (6) is arranged on base (1) and lays respectively at the both sides of retraction slot (5), another reinforcement (6) is arranged on left side protection edge (3).
2. the manufacture method of a rustless steel F type sealing piece; it is characterized in that: it includes longitudinal shearing strip, uncoiling leveling, pasting protective film, cold roll forming and five steps of clod wash shaping; longitudinal shearing strip be according to rustless steel sealing piece needed for thickness and product size select thickness and the width of strip steel respectively, entire volume strip steel is placed on the slitting equipment with protection device and carries out expecting wide cutting；Uncoiling leveling is by level(l)ing machine, flattens the steel band after slitting；Pasting protective film is all to stick protecting film inside and outside the steel band after flattening slitting；Cold roll forming is to be deformed by passage roll bending continuously by roll by the steel band sticking protecting film, in employing, the paired deformation roller of lower roll coordinates and guides edger roll and edge-on roller and straightening mechanism, first three reinforcements of molding sealing piece and middle part retraction slot, edge turning straight portion on the left of reshaping sealing piece, turning straight flange is made to have 90 ° of bent angles, then reshaping sealing piece left and right sides protection edge, making right side protection edge is 45 ° of angles with sealing piece base, left side protection edge is 90 ° of angles with sealing piece base, two reinforcements in described three reinforcements lay respectively at the both sides of retraction slot, another reinforcement is positioned on the protection edge of left side；Clod wash shaping is that the product obtaining cold roll forming step carries out finishing.
The manufacture method of rustless steel F type sealing piece the most according to claim 2, it is characterized in that: the deformation process of described cold roll forming and clod wash shaping has 23 passage operations, cold roll forming starts to the 3rd passage operation to terminate from the 23rd passage operation, wherein the 23rd passage to the 17th passage is three reinforcements of molding and middle part retraction slot, 16th passage to the 11st passage is edge turning straight portion on the left of molding, angle is 90 °, 10th passage to the 3rd passage is shaped article left and right sides protection edge, and left side protection edge is 90 °, right side protection edge is 45 °；Clod wash shaping starts to the 1st passage operation to terminate from the 2nd passage operation, and the 2nd passage was bend, and the 1st passage is finishing pass.
The manufacture method of rustless steel F type sealing piece the most according to claim 3, it is characterised in that: in described 16th passage to the 13rd passage, the 10th passage to the 7th passage, every adjacent twice use edger roll to guide product and assistant formation between taking second place；In 11st, 4,3 three passages, using edge-on roller, right side on the left of product is normal roll-in pass.
The manufacture method of rustless steel F type sealing piece the most according to claim 4, it is characterised in that: between described 16th to 13 passage, the edger roll angle of assistant formation is respectively 15 °, 25 °, 50 °；Between 10th passage to the 7th passage, the edger roll angle of assistant formation is respectively 10 °, 15 °, 20 °.
The manufacture method of rustless steel F type sealing piece the most according to claim 3, it is characterized in that: described 23rd passage is reinforcement molding, in the middle part of described 22nd passage to the 17th passage, the angle change of retraction slot is followed successively by: 24 °, 52 °, 68 °, 78 °, 85 °, 90 °.
The manufacture method of rustless steel F type sealing piece the most according to claim 3, it is characterised in that: the angle change of described 16th passage to the 11st passage molding left hand corner straight flange is followed successively by: 10 °, 20 °, 40 °, 60 °, 80 °, 90 °.
The manufacture method of rustless steel F type sealing piece the most according to claim 3, it is characterised in that: described 10th passage is followed successively by the angle change of the 3rd passage molding both sides protection edge: 6 ° of right side, 10 ° of left side, 12 ° of right side, 30 ° of left side, 22 ° of right side, 45 ° of left side, 30 ° of right side, 60 ° of left side, 38 ° of right side, 70 ° of left side, 42 ° of right side, 80 ° of left side, 44 ° of right side, 89 ° of left side, 45 ° of right side, 90 ° of left side.
The manufacture method of rustless steel F type sealing piece the most according to claim 3, it is characterised in that: it is 47 ° of right side, 92 ° of left side that described 2nd passage crosses the angle of bend time, and the angle of the 1st passage finishing pass is 45 ° of right side, 90 ° of left side.
10. according to the manufacture method of the rustless steel F type sealing piece described in claim 2 to 8 any one, it is characterised in that: after described clod wash shaping step, re-use flatness and the torsion resistance of straightener regulation product.
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| CN111185523B (en) * | 2019-12-31 | 2021-07-16 | 南京图信新材料科技有限公司 | Roller type continuous cold roll forming method for U-shaped steel sheet pile |
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| CN200949270Y (en) * | 2006-06-02 | 2007-09-19 | 贵阳铝镁设计研究院 | Expansion joint steel plate sealing up sheet |
| CN101954400B (en) * | 2010-05-31 | 2012-01-11 | 南京万汇新材料科技有限公司 | Continuous roll cold bending forming method for stainless steel water stop strips |
| CN102974684B (en) * | 2012-12-17 | 2015-03-11 | 江苏申阳电梯部件有限公司 | Method for cold roll forming of carbon steel plate section guide rail |
| CN104947674B (en) * | 2013-10-26 | 2017-05-17 | 中国葛洲坝集团第一工程有限公司 | Construction method for concrete face dam water stop mortar bed construction trolley |
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2015
- 2015-02-12 CN CN201510074413.9A patent/CN104727274B/en active Active
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