CN106363360A - Method for processing threads on ends of stainless steel bar - Google Patents
Method for processing threads on ends of stainless steel bar Download PDFInfo
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- CN106363360A CN106363360A CN201610956756.2A CN201610956756A CN106363360A CN 106363360 A CN106363360 A CN 106363360A CN 201610956756 A CN201610956756 A CN 201610956756A CN 106363360 A CN106363360 A CN 106363360A
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- screw thread
- default screw
- height
- big footpath
- constant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a method for processing threads on the ends of a stainless steel bar. The method comprises the steps of upsetting: the target end of the stainless steel bar is upset so as to form an upset section of which the base diameter is equal to a preset value and the length is equal to the effective length of preset threads, wherein the preset value is equal to (the large diameter of the preset threads - the height of the preset threads + a first modified constant); stripping: reinforcing ribs on the upset section are stripped so as to form a to-be-rolled section of which the diameter is equal to the preset value and the surface is smooth; and rolling: the to-be-rolled section is rolled by a thread rolling machine so as to form the preset threads on the to-be-rolled section, wherein the clearance between rollers of the thread rolling machine is equal to (the large diameter of the preset threads - two times the height of the preset threads + a second modified constant). The invention provides the method for processing the threads on the ends of the stainless steel bar. According to the method for processing the threads on the ends of the stainless steel bar, qualified threads can be processed, so that the threads of the stainless steel bar can be smoothly connected by adopting a threaded sleeve.
Description
Technical field
The present invention relates to a kind of method that end to stainless steel rebar processes screw thread.
Background technology
In the building of armored concrete, reliable and secure advantage is relied on using the carbon steel reinforcing bar that threaded sleeve type connects
Through being widely applied by people.Wherein threaded sleeve type connects is to process screw thread by end reinforced for carbon steel, then matched
Screw shell two carbon steel bar connecting are got up.
People are more desirable to stainless steel rebar and threaded sleeve type connection may also be employed, but, due to only right in prior art
The method of carbon steel end reinforced processing screw thread, without the method for the end processing screw thread to stainless steel rebar, and rustless steel steel
The intensity of muscle and performance are different from carbon steel reinforcing bar, lead to the method for processing screw thread end reinforced to carbon steel to be not suitable for stainless at all
The end of steel reinforcing bar carries out screw thread process, is therefore badly in need of a kind of method that end to stainless steel rebar processes screw thread.
Content of the invention
Solved the above problems based on above-mentioned, the present invention provides a kind of method that end to stainless steel rebar processes screw thread,
It can process qualified screw thread so that the screw thread of stainless steel rebar can smoothly adopt threaded sleeve type to connect.
The invention provides a kind of method that end to stainless steel rebar processes screw thread, its step includes: jumping-up step:
The target end of described stainless steel rebar is carried out with jumping-up, formed base circle diameter (BCD) be equal to preset value and length is equal to default screw thread
Effective length jumping-up section, the height+the first of the big footpath-default screw thread of wherein said preset value=default screw thread often revises
Number；Stripping rib step: divest the ribs in described jumping-up section, formed a diameter of described preset value and smooth surface treats rolled thread
Section；And rolled thread step: treat that rolled thread section carries out rolled thread by screw-rolling machine to described, to treat default spiral shell is formed on rolled thread section described
Stricture of vagina, the height+the second of the default screw thread of big footpath-twice of the gap between the roller of wherein said screw-rolling machine=default screw thread is revised
Constant.
Further, the big footpath of described default screw thread, default screw thread effective length, the height of default screw thread, the first correction
Constant and second revises the full following relation of relation between constant: when the big footpath of described default screw thread be 27.5～30.5mm, pre-
If screw thread effective length be 25～28mm and the height of described default screw thread be 2mm, described first revise constant be 0.6～
0.8mm, described second revises constant for 0.1～0.3mm；When the big footpath of described default screw thread is 34.5～38.5mm, presets spiral shell
When stricture of vagina effective length is 32～36mm and the height of described default screw thread is 2mm, described first revises constant for 0.3～0.5mm,
Described second revises constant for -0.1～0.1mm；When the big footpath of described default screw thread be 42.5mm, default screw thread effective length be
When the height of 40mm and described default screw thread is 2mm, described first revises constant for 0.2～0.4mm, described second correction constant
For -0.2～0mm.
Further, the big footpath of described default screw thread, default screw thread effective length, the height of default screw thread, the first correction
Constant and second revises the full following relation of relation between constant: when the big footpath of described default screw thread is 27.5mm, presets screw thread
When effective length is 25mm and the height of described default screw thread is 2mm, described first revises constant for 0.7mm, and described second repaiies
Normal number is 0.2mm；When the big footpath of described default screw thread is 30.5mm, presets screw thread effective length for 28mm and described default spiral shell
When the height of stricture of vagina is 2mm, described first revises constant for 0.7mm, and described second revises constant for 0.2mm；When described default spiral shell
When the big footpath of stricture of vagina is 34.5mm, default screw thread effective length is 32mm and the height of described default screw thread is 2mm, described first repaiies
Normal number is 0.4mm, and described second revises constant for 0mm；When the big footpath of described default screw thread be 38.5mm, default screw thread effective
When length is 36mm and the height of described default screw thread is 2mm, described first revises constant for 0.4mm, and described second often revises
Number is 0mm；When the big footpath of described default screw thread is 42.5mm, presets the height that screw thread effective length is 40mm and described default screw thread
When spending for 2mm, described first revises constant for 0.3mm, and described second revises constant for -0.1.
Further, the relation between the specification of described stainless steel rebar and described default screw thread meets following relation: when
When the specification of described stainless steel rebar is s25, the big footpath of described default screw thread is 27.5mm, and described default screw thread effective length is
25mm, the height of described default screw thread is 2mm；When the specification of described stainless steel rebar is s28, the big footpath of described default screw thread
For 30.5mm, described default screw thread effective length is 28mm, and the height of described default screw thread is 2mm；When described stainless steel rebar
Specification when being s32, the big footpath of described default screw thread is 34.5mm, and described default screw thread effective length is 32mm, described default
The height of screw thread is 2mm；When the specification of described stainless steel rebar is s36, the big footpath of described default screw thread is 38.5mm, described
Default screw thread effective length is 36mm, when the height of described default screw thread is 2mm；When the specification of described stainless steel rebar is s40
When, the big footpath of described default screw thread is 42.5mm, and described default screw thread effective length is 40mm, and the height of described default screw thread is
During 2mm.
Present inventor when implementing the present invention creatively it is found that in jumping-up step, according to default spiral shell
The big footpath of stricture of vagina, default screw thread effective length, the computing formula of the height of default screw thread, the first correction constant and base circle diameter (BCD) are come about
The base circle diameter (BCD) of bundle jumping-up section, ensure that the end of stainless steel rebar is straight, so that it is guaranteed that stripping rib step is smoothly implemented；And
In rolled thread step, according to the big footpath of default screw thread, the height of default screw thread, second revise gap formula between constant and roller Lai
Gap between the roller of constraint screw-rolling machine, ensure that the method for the end processing screw thread to stainless steel rebar of the present invention can
Process qualified screw thread so that the screw thread of above-mentioned stainless steel rebar can smoothly adopt threaded sleeve type to connect.
The step used by method that the end to stainless steel rebar of the present invention processes screw thread is simple and reliable, convenient to carry out pushes away
Wide application.
Brief description
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
In embodiment or description of the prior art, the accompanying drawing of required use is briefly described.In all of the figs, similar element
Or partly typically identified by similar reference.In accompanying drawing, each element or part might not be drawn according to actual ratio.
The flow chart that the end to stainless steel rebar that Fig. 1 is according to embodiments of the present invention processes the method for screw thread.
Specific embodiment
Below in conjunction with accompanying drawing, the embodiment of technical solution of the present invention is described in detail.Following examples are only used for
Clearly technical scheme is described, is therefore only used as example, and the protection model of the present invention can not be limited with this
Enclose.
The flow chart that the end to stainless steel rebar that Fig. 1 is according to embodiments of the present invention processes the method for screw thread.As Fig. 1
Shown, the method that the end to stainless steel rebar of the embodiment of the present invention processes screw thread includes: jumping-up step s1, to rustless steel steel
The target end of muscle carries out jumping-up, forms the upsetting of effective length that base circle diameter (BCD) is equal to preset value and that length is equal to default screw thread
The height+the first of the big footpath of thick section, wherein preset value=default screw thread-default screw thread revises constant；Stripping rib step s1: divest upsetting
Ribs in thick section, formed a diameter of preset value and smooth surface treats rolled thread section；And rolled thread step s3: by rolled thread
Machine is treated rolled thread section and is carried out rolled thread, with treating to be formed default screw thread in rolled thread section, the wherein gap between the roller of screw-rolling machine=pre-
If the height+the second of the default screw thread of big footpath-twice of screw thread revises constant.
Present inventor is learnt after by many experiments, the big footpath of default screw thread, default screw thread effective length,
Relation between the height of default screw thread, the first correction constant and the second correction constant should meet below table 1:
Table 1
According to table 1: when the big footpath of default screw thread is 27.5～30.5mm, presets screw thread effective length for 25～28mm
And when presetting the height of screw thread for 2mm, first revises constant for 0.6～0.8mm, second revises constant for 0.1～0.3mm；When
The big footpath of default screw thread is 34.5～38.5mm, default screw thread effective length is 32～36mm and the height of default screw thread is 2mm
When, first revises constant for 0.3～0.5mm, and second revises constant for -0.1～0.1mm；When the big footpath of default screw thread is
When 42.5mm, default screw thread effective length are 40mm and the height of default screw thread is 2mm, first revise constant be 0.2～
0.4mm, second revises constant for -0.2～0mm.
Present inventor when implementing the present invention creatively it is found that in jumping-up step, according to default spiral shell
The big footpath of stricture of vagina, default screw thread effective length, the computing formula of the height of default screw thread, the first correction constant and base circle diameter (BCD) are come about
The base circle diameter (BCD) of bundle jumping-up section, ensure that the end of stainless steel rebar is straight, so that it is guaranteed that stripping rib step is smoothly implemented；And
In rolled thread step, according to the big footpath of default screw thread, the height of default screw thread, second revise gap formula between constant and roller Lai
Gap between the roller of constraint screw-rolling machine, ensure that the end to stainless steel rebar of the present invention processes the method processing of screw thread
Qualified screw thread so that above-mentioned stainless steel rebar can smoothly adopt threaded sleeve type connect.
Embodiment one
Material to be processed: the stainless steel rebar of s25 specification:
Default thread parameter: the big footpath of default screw thread is 27.5mm, default screw thread effective length is 25mm, default screw thread
It is highly 2mm
Computing formula and related correction general knowledge: the height+the first of the big footpath of preset value=default screw thread-default screw thread is repaiied
Normal number, wherein first revises constant for 0.7mm；Big footpath-the twice of the gap between the roller of screw-rolling machine=default screw thread pre-
If the height+the second of screw thread revises constant, wherein second revises constant for 0.2mm.
To the method for the end processing screw thread of the stainless steel rebar of s25 specification it is:
Jumping-up step: according to " height+the first of the big footpath of preset value=default screw thread-default screw thread revises constant " this
The computing formula of base circle diameter (BCD) calculating base circle diameter (BCD), i.e. 27.5-2+0.7=26.2mm, the then rustless steel steel to s25 specification
The target end of muscle carries out jumping-up, forms base circle diameter (BCD) for 26.2mm's and length is the jumping-up section of 25mm；
Stripping rib step: divest the ribs in jumping-up section, form that a diameter of 26.2mm's and smooth surface treat rolled thread section；
Rolled thread step: according to " height+the second of the default screw thread of the big footpath-twice of default screw thread revises constant " this rolling
Gap formula between wheel, to calculate the gap between the roller of screw-rolling machine, i.e. 27.5-2*2+0.2=23.7mm, then passes through rolled thread
Machine is treated rolled thread section and is carried out rolled thread, and to treat to form default screw thread in rolled thread section, the wherein gap between the roller of screw-rolling machine is
23.7mm.
Embodiment two
Material to be processed: the stainless steel rebar of s28 specification:
Default thread parameter: the big footpath of default screw thread is 30.5mm, default screw thread effective length is 28mm, default screw thread
It is highly 2mm
Computing formula and related correction general knowledge: the height+the first of the big footpath of preset value=default screw thread-default screw thread is repaiied
Normal number, wherein first revises constant for 0.7mm；Big footpath-the twice of the gap between the roller of screw-rolling machine=default screw thread pre-
If the height+the second of screw thread revises constant, second revises constant for 0.2mm.
To the method for the end processing screw thread of the stainless steel rebar of s28 specification it is:
Jumping-up step: according to " height+the first of the big footpath of preset value=default screw thread-default screw thread revises constant " this
The computing formula of base circle diameter (BCD) calculating base circle diameter (BCD), i.e. 30.5-2+0.7=29.2mm, the then rustless steel steel to s28 specification
The target end of muscle carries out jumping-up, forms base circle diameter (BCD) for 29.2mm's and length is the jumping-up section of 28mm；
Stripping rib step: divest the ribs in jumping-up section, form that a diameter of 29.2mm's and smooth surface treat rolled thread section；
Rolled thread step: according to " height+the second of the default screw thread of the big footpath-twice of default screw thread revises constant " this rolling
Gap formula between wheel, to calculate the gap between the roller of screw-rolling machine, i.e. 30.5-2*2+0.2=26.7mm, then passes through rolled thread
Machine is treated rolled thread section and is carried out rolled thread, and to treat to form default screw thread in rolled thread section, the wherein gap between the roller of screw-rolling machine is
26.7mm.
Embodiment three
Material to be processed: the stainless steel rebar of s32 specification
Default thread parameter: the big footpath of default screw thread is 34.5mm, default screw thread effective length is 32mm, default screw thread
It is highly 2mm
Computing formula and related correction general knowledge: the height+the first of the big footpath of preset value=default screw thread-default screw thread is repaiied
Normal number, wherein first revises constant for 0.4mm；Big footpath-the twice of the gap between the roller of screw-rolling machine=default screw thread pre-
If the height+the second of screw thread revises constant, second revises constant for 0mm.
To the method for the end processing screw thread of the stainless steel rebar of s32 specification it is:
Jumping-up step: according to " height+the first of the big footpath of preset value=default screw thread-default screw thread revises constant " this
The computing formula of base circle diameter (BCD) calculating base circle diameter (BCD), i.e. 34.5-2+0.4=32.9mm, the then rustless steel steel to s32 specification
The target end of muscle carries out jumping-up, forms base circle diameter (BCD) for 32.9mm's and length is the jumping-up section of 32mm；
Stripping rib step: divest the ribs in jumping-up section, form that a diameter of 32.9mm's and smooth surface treat rolled thread section；
Rolled thread step: according to " height+the second of the default screw thread of the big footpath-twice of default screw thread revises constant " this rolling
Gap formula between wheel, to calculate the gap between the roller of screw-rolling machine, i.e. 34.5-2*2+0=32.5mm, then passes through screw-rolling machine
Treat rolled thread section and carry out rolled thread, to treat to form default screw thread in rolled thread section, the wherein gap between the roller of screw-rolling machine is
32.5mm.
Example IV
Material to be processed: the stainless steel rebar of s36 specification
Default thread parameter: the big footpath of default screw thread is 38.8mm, default screw thread effective length is 36mm, default screw thread
It is highly 2mm
Computing formula and related correction general knowledge: the height+the first of the big footpath of preset value=default screw thread-default screw thread is repaiied
Normal number, wherein first revises constant for 0.4mm；Big footpath-the twice of the gap between the roller of screw-rolling machine=default screw thread pre-
If the height+the second of screw thread revises constant, second revises constant for 0mm.
To the method for the end processing screw thread of the stainless steel rebar of s36 specification it is:
Jumping-up step: according to " height+the first of the big footpath of preset value=default screw thread-default screw thread revises constant " this
The computing formula of base circle diameter (BCD) calculating base circle diameter (BCD), i.e. 38.5-2+0.4=36.9mm, the then rustless steel steel to s36 specification
The target end of muscle carries out jumping-up, forms base circle diameter (BCD) for 36.9mm's and length is the jumping-up section of 36mm；
Stripping rib step: divest the ribs in jumping-up section, form that a diameter of 36.9mm's and smooth surface treat rolled thread section；
Rolled thread step: according to " height+the second of the default screw thread of the big footpath-twice of default screw thread revises constant " this rolling
Gap formula between wheel, to calculate the gap between the roller of screw-rolling machine, i.e. 38.5-2*2+0=34.5mm, then passes through screw-rolling machine
Treat rolled thread section and carry out rolled thread, to treat to form default screw thread in rolled thread section, the wherein gap between the roller of screw-rolling machine is
34.5mm.
Embodiment five
Material to be processed: the stainless steel rebar of s40 specification
Default thread parameter: the big footpath of default screw thread is 42.5mm, default screw thread effective length is 40mm, default screw thread
It is highly 2mm
Computing formula and related correction general knowledge: the height+the first of the big footpath of preset value=default screw thread-default screw thread is repaiied
Normal number, wherein first revises constant for 0.3mm；Big footpath-the twice of the gap between the roller of screw-rolling machine=default screw thread pre-
If the height+the second of screw thread revises constant, second revises constant for -0.1mm.
To the method for the end processing screw thread of the stainless steel rebar of s40 specification it is:
Jumping-up step: according to " height+the first of the big footpath of preset value=default screw thread-default screw thread revises constant " this
The computing formula of base circle diameter (BCD) calculating base circle diameter (BCD), i.e. 42.5-2+0.4=40.9mm, the then rustless steel steel to s40 specification
The target end of muscle carries out jumping-up, forms base circle diameter (BCD) for 40.9mm's and length is the jumping-up section of 40mm；
Stripping rib step: divest the ribs in jumping-up section, form that a diameter of 40.9mm's and smooth surface treat rolled thread section；
Rolled thread step: according to " height+the second of the default screw thread of the big footpath-twice of default screw thread revises constant " this rolling
Gap formula between wheel, to calculate the gap between the roller of screw-rolling machine, i.e. 42.9-2*2-0.1=38.8mm, then passes through rolled thread
Machine is treated rolled thread section and is carried out rolled thread, and to treat to form default screw thread in rolled thread section, the wherein gap between the roller of screw-rolling machine is
38.8mm.
The screw thread that above-described embodiment one is processed to stainless steel rebar to embodiment five is using threaded sleeve type connected mode
Afterwards, it is connected as a grade joint grade, ensure that key project quality well.Employ specially through applicant's in-house experts and secrecy
Learn after family's assessment test and appraisal, the screw thread that above-described embodiment one to embodiment five is processed to stainless steel rebar can obtain third party
The International Certification of cares, production overall process from raw material to finished product for the stainless steel rebar product connector can pass through Britain's reinforcing bar
The method of the end processing screw thread to stainless steel rebar of the examination ＆ verification of certificate management authority, the therefore embodiment of the present invention is processed
Stainless steel rebar is a product that disclosure satisfy that international standard, and the step used by the method is simple and reliable, is easy to promote
To the whole nation or the whole world.
Finally it is noted that various embodiments above, only in order to technical scheme to be described, is not intended to limit；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that: its according to
So the technical scheme described in foregoing embodiments can be modified, or wherein some or all of technical characteristic is entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme, it all should be covered in the middle of the claim of the present invention and the scope of description.
Claims (4)
1. a kind of end to stainless steel rebar processes the method for screw thread it is characterised in that its step includes:
Jumping-up step: jumping-up is carried out to the target end of described stainless steel rebar, forms base circle diameter (BCD) equal to preset value and long
Degree is equal to the jumping-up section of the effective length of default screw thread, the height of the big footpath-default screw thread of wherein said preset value=default screw thread
Degree the+the first correction constant；
Stripping rib step: divest the ribs in described jumping-up section, formed a diameter of described preset value and smooth surface waits to roll
Silk section；And
Rolled thread step: treat that rolled thread section carries out rolled thread by screw-rolling machine to described, to treat default screw thread is formed on rolled thread section described,
The height+the second of the default screw thread of big footpath-twice of the gap between the roller of wherein said screw-rolling machine=default screw thread is often revised
Number.
2. method according to claim 1 it is characterised in that the big footpath of described default screw thread, default screw thread effective length,
The full following relation of relation between the height of default screw thread, the first correction constant and the second correction constant:
When the big footpath of described default screw thread is 27.5～30.5mm, presets screw thread effective length for 25～28mm and described default spiral shell
When the height of stricture of vagina is 2mm, described first revises constant for 0.6～0.8mm, and described second revises constant for 0.1～0.3mm；
When the big footpath of described default screw thread is 34.5～38.5mm, presets screw thread effective length for 32～36mm and described default spiral shell
When the height of stricture of vagina is 2mm, described first revises constant for 0.3～0.5mm, and described second revises constant for -0.1～0.1mm；
When the big footpath of described default screw thread be 42.5mm, default screw thread effective length is 40mm and the height of described default screw thread is
During 2mm, described first revises constant for 0.2～0.4mm, and described second revises constant for -0.2～0mm.
3. method according to claim 1 it is characterised in that the big footpath of described default screw thread, default screw thread effective length,
The full following relation of relation between the height of default screw thread, the first correction constant and the second correction constant:
When the big footpath of described default screw thread be 27.5mm, default screw thread effective length is 25mm and the height of described default screw thread is
During 2mm, described first revises constant for 0.7mm, and described second revises constant for 0.2mm；
When the big footpath of described default screw thread be 30.5mm, default screw thread effective length is 28mm and the height of described default screw thread is
During 2mm, described first revises constant for 0.7mm, and described second revises constant for 0.2mm；
When the big footpath of described default screw thread be 34.5mm, default screw thread effective length is 32mm and the height of described default screw thread is
During 2mm, described first revises constant for 0.4mm, and described second revises constant for 0mm；
When the big footpath of described default screw thread be 38.5mm, default screw thread effective length is 36mm and the height of described default screw thread is
During 2mm, described first revises constant for 0.4mm, and described second revises constant for 0mm；
When the big footpath of described default screw thread be 42.5mm, default screw thread effective length is 40mm and the height of described default screw thread is
During 2mm, described first revises constant for 0.3mm, and described second revises constant for -0.1.
4. method according to claim 3 it is characterised in that the specification of described stainless steel rebar and described default screw thread it
Between relation meet following relation:
When the specification of described stainless steel rebar is s25, the big footpath of described default screw thread is 27.5mm, and described default screw thread is effective
Length is 25mm, and the height of described default screw thread is 2mm；
When the specification of described stainless steel rebar is s28, the big footpath of described default screw thread is 30.5mm, and described default screw thread is effective
Length is 28mm, and the height of described default screw thread is 2mm；
When the specification of described stainless steel rebar is s32, the big footpath of described default screw thread is 34.5mm, and described default screw thread is effective
Length is 32mm, and the height of described default screw thread is 2mm；
When the specification of described stainless steel rebar is s36, the big footpath of described default screw thread is 38.5mm, and described default screw thread is effective
Length is 36mm, when the height of described default screw thread is 2mm；
When the specification of described stainless steel rebar is s40, the big footpath of described default screw thread is 42.5mm, and described default screw thread is effective
Length is 40mm, when the height of described default screw thread is 2mm.
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| CN201610956756.2A CN106363360B (en) | 2016-11-03 | 2016-11-03 | A method of screw thread is processed to the end of stainless steel rebar |
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| CN201610956756.2A CN106363360B (en) | 2016-11-03 | 2016-11-03 | A method of screw thread is processed to the end of stainless steel rebar |
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| CN106363360B (en) | 2018-09-18 |
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