CN105537882B - A kind of production technology of pigtail taper sleeve - Google Patents
A kind of production technology of pigtail taper sleeve Download PDFInfo
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- CN105537882B CN105537882B CN201610075160.1A CN201610075160A CN105537882B CN 105537882 B CN105537882 B CN 105537882B CN 201610075160 A CN201610075160 A CN 201610075160A CN 105537882 B CN105537882 B CN 105537882B
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- steel pipe
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- pigtail taper
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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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Abstract
The present invention relates to a kind of production technology of pigtail taper sleeve, it using seamless steel pipe and processes pigtail taper sleeve by the cold extrusion of contour forging technique, and the production technology of the pigtail taper sleeve of the application includes blanking, the first end to seamless steel pipe and carries out cold extrusion processing, the second end progress cold extrusion processing to seamless steel pipe, flatten seamless steel pipe, trimming carried out to seamless steel pipe and punching tapping.The production technology of the application is few compared with the process for the production technology that pigtail taper sleeve is manufactured with casting process, and production efficiency is substantially improved, while reducing production cost.
Description
Technical field
The present invention relates to a kind of technical field of producing of fag end, more particularly to a kind of production technology of pigtail taper sleeve.
Background technology
The current prices of raw materials significantly drop, and production process cost further goes up, casting process have wax processed, finishing,
Cheng Shu, mucilage, shell processed (more than 5 layers), dewaxing, air-dry, roasting, steel-making, casting, sand removal, cut dead head, polishing, the road of normalizing 14
As many as could be molded.Pigtail taper sleeve is produced with casting process, its production cost is high and production efficiency is not good.
The content of the invention
For deficiency of the prior art, it is an object of the invention to provide a kind of production technology of pigtail taper sleeve.
In order to solve the above-mentioned technical problem, this application discloses a kind of production technology of pigtail taper sleeve, it is characterised in that bag
Include：Blanking, obtains seamless steel pipe, the length and external diameter of seamless steel pipe are set according to the size for the pigtail taper sleeve to be produced, seamless
Steel pipe has first end and the second end；Cold extrusion processing is carried out to the first end of seamless steel pipe, makes the of seamless steel pipe
The external diameter of one end meets the external diameter of the first end for the pigtail taper sleeve to be produced, and the first end of seamless steel pipe is oblique with first
Cone；Cold extrusion processing is carried out to the second end of seamless steel pipe, meets the external diameter of the second end of seamless steel pipe and is intended to produce
Pigtail taper sleeve the second end external diameter, the second end of seamless steel pipe has the second beveled cone；Flattening is processed through cold extrusion
Seamless steel pipe afterwards, forms the seamless steel pipe of flat, and the first end of seamless steel pipe has the first inclined-plane, its second end tool
There is the second inclined-plane；The first inclined-plane of the first end of the seamless steel pipe through flattening is cut off, diagonal cut joint is formed in seamless steel pipe；And
Punching tapping is carried out to the first end of seamless steel pipe, screw is formed in one end of the first end of the seamless steel pipe after flattening
Hole, and perforation is formed respectively in the left surface and right flank of the seamless steel pipe after flattening, two perforation are relative.
According to the embodiment of the application, the above-mentioned first end to seamless steel pipe, which carries out cold extrusion processing, to be included to nothing
The cold extrusion processing of the first end progress of steel pipe at least one times is stitched, the first end of seamless steel pipe carries out time of cold extrusion processing
Number is set according to the external diameter of the first end for the pigtail taper sleeve to be produced.
According to the embodiment of the application, the above-mentioned first end progress cold extrusion processing each time to seamless steel pipe is
Cold extrusion processing is carried out to seamless steel pipe by two moulds.
According to the embodiment of the application, the above-mentioned the second end to seamless steel pipe, which carries out cold extrusion processing, to be included to nothing
The cold extrusion processing of the second end progress of steel pipe at least one times is stitched, the second end of seamless steel pipe carries out time of cold extrusion processing
Number is set according to the external diameter of the second end for the pigtail taper sleeve to be produced.
According to the embodiment of the application, the above-mentioned the second end progress cold extrusion processing each time to seamless steel pipe is
Cold extrusion processing is carried out to seamless steel pipe by two moulds.
According to the embodiment of the application, the above-mentioned the second end progress cold extrusion processing each time to seamless steel pipe is
Cold extrusion processing, tonnage used in hydraulic press or crank press are carried out to seamless steel pipe by hydraulic press or crank press
It is the extruding force selection according to needed for the second end for the second end formation pigtail taper sleeve for being intended to seamless steel pipe.
According to the embodiment of the application, the seamless steel pipe after above-mentioned flattening is processed through cold extrusion is included in flattening process
The bus of the top surface of middle holding seamless steel pipe is straight line.
Compared with prior art, the application can be obtained including following technique effect：
The production technology of the application is few compared with the process for the production technology that pigtail taper sleeve is manufactured with casting process, significantly carries
Production efficiency is risen, while reducing production cost
Brief description of the drawings
Figure 1A and 1B is the schematic diagram of the pigtail taper sleeve of the embodiment of the application one.
Fig. 2 is the flow chart of the production technology of the pigtail taper sleeve of the embodiment of the application one.
Fig. 3 is the schematic diagram of the completion step S11 of the embodiment of the application one seamless steel pipe.
Fig. 4 is the schematic diagram of the completion step S12 of the embodiment of the application one seamless steel pipe.
Fig. 5 is the schematic diagram of the completion step S13 of the embodiment of the application one seamless steel pipe.
Fig. 6 A and 6B are the schematic diagram of the completion step S14 of the embodiment of the application one seamless steel pipe.
Fig. 7 is the schematic diagram of the completion step S16 of the embodiment of the application one seamless steel pipe.
Embodiment
Multiple embodiments of the application, as clearly stated, the details in many practices will be disclosed with schema below
It will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the application.Also
It is to say, in some embodiments of the application, the details in these practices is non-essential.In addition, for the sake of simplifying schema,
Some known usual structures will illustrate it in simply illustrative mode in the drawings with component.
On its " first " used herein, " second " etc., the meaning of order or cis-position is not especially censured, it is also non-to use
To limit the application, its component described just for the sake of difference with constructed term or operation.
Figure 1A and Figure 1B is referred to, it is the schematic diagram of the pigtail taper sleeve 1 of the embodiment of the application one；As illustrated, this
Application provides a kind of production technology of pigtail taper sleeve 1, and it is used to manufacture pigtail taper sleeve 1 as shown in Figure 1, and pigtail taper sleeve 1 has
Circular arc top surface 10, left surface 11, right flank 12 and bottom surface 13, and with first end 14 and the second end 15, first end 14
One end there is screw hole 141, positioned at the bottom surface 13 of first end 14 have diagonal cut joint 131, the left surface 11 of first end 14
And right flank 12 has perforation 16 respectively, two perforation 16 are relative.One end of the second end 15 has opening 151, positioned at second
The bottom surface 13 of end 15 has inclined-plane 132.
Also referring to Fig. 2, it is the flow chart of the production technology of the pigtail taper sleeve 1 of the embodiment of the application one；As schemed
Shown, the pigtail taper sleeve 1 of the application is produced using seamless steel pipe by contour forging technique, and its main production includes blanking, right
The first end cold extrusion processing of seamless steel pipe, the second end cold extrusion to seamless steel pipe are processed, flatten seamless steel pipe, to nothing
Stitch steel pipe and carry out trimming and punching tapping.The number of times of first end and its second end cold extrusion processing wherein to seamless steel pipe
It is the screwed hole 141 and be open 151 external diameter and the external diameter of the unprocessed seamless steel pipe of script according to pigtail taper sleeve 1 for forming
Ratio compared setting with the limit necking coefficient of workpiece material.In this with implementation model of Fig. 1 pigtail taper sleeve 1 for the application
Example, and Fig. 1 pigtail taper sleeve 1 is produced such as production technology how provided herein in the description below.
In the size of this pigtail taper sleeve 1 for first illustrating Fig. 1, the horizontal length of pigtail taper sleeve 1 is 180mm, its maximum perpendicular
Highly it is 54mm, its thickness is 28mm, and its wall thickness is 5mm；A diameter of 16mm of screw hole 141, the depth of screw hole 141 is
33mm, the horizontal length of first end 14 is 96mm, a diameter of 25mm of opening 151, the folder between inclined-plane 132 and circular arc top surface 10
Angle is 12.76 degree.The production technology for producing above-mentioned pigtail taper sleeve 1 is to first carry out step S10, blanking, and acquirement external diameter is 45mm, length
The seamless steel pipe that degree is 200mm and wall thickness is 5mm, the size of seamless steel pipe is set according to the size for the pigtail taper sleeve 1 to be produced
Fixed, wherein seamless steel pipe has first end and the second end, and one end of first end has the first opening, the phase of the second end
There is the second opening to one end of first end.Refer to Fig. 3 in the lump again, it is the completion step S11 of the embodiment of the application one
Seamless steel pipe 2 schematic diagram；As shown in the figure；Step S12 is performed, first is carried out to the first end 21 of the seamless steel pipe 2
Secondary cold extrusion processing, carries out first time cold extrusion processing to seamless steel pipe 2 by two moulds, makes the first end of seamless steel pipe 2
Portion 21 has the first hollow cylinder 211 and the first beveled cone 212,.One end of first hollow cylinder 211 has the first opening 213,
Its other end connects the first beveled cone 212, and the section of the first beveled cone 212 has inclined-plane 214 and plane 215, and inclined-plane 214 is with putting down
Angle between face 215 is 14 degree.The second end 22 is the second hollow cylinder 221, one end connection first of the second hollow cylinder 221
First beveled cone 212 of end 21, its other end has the second opening 222, wherein the external diameter of the first opening 213 is 33.75mm,
The external diameter of second opening 222 is 45.2mm.
Simultaneously refering to Fig. 4, it is the schematic diagram of the completion step S12 of the embodiment of the application one seamless steel pipe 2；As schemed
It is shown；Step S12 is performed, second of cold extrusion processing is carried out to the first end 21 of the seamless steel pipe 2, passes through two moulds
Second of cold extrusion processing is carried out to the seamless steel pipe 2 for completing step S11, makes the first of the first end 21 of seamless steel pipe 2 to open
The reduced diameter of mouth 213 is 25.3mm, and the depth that its first opening 213 extends to the second end 22 also reduce, and also illustrate that first
The contraction in length of hollow cylinder 211, the horizontal length of the first beveled cone 212 is elongated.Above-mentioned steps S11 and S12 cold-extruded twice
The main first end 21 to seamless steel pipe 2 of pressure processing carries out cold extrusion processing, and the external diameter for reducing the first opening 213 meets fag end
The external diameter (as shown in Figure 1) of the screw hole 141 of the first end 14 of Taper Pipe 1.The phase of first end 21 of the seamless steel pipe 2 of the application
When in the first end 14 of pigtail taper sleeve 1, the external diameter before the processing of the first opening 213 of the first end 21 of seamless steel pipe 2 is
45mm, for the external diameter (as shown in Figure 1) of the screw hole 141 of the first end 14 of formation pigtail taper sleeve 1, it is necessary to seamless steel pipe 2
First end 21 carry out cold extrusion at least one times processing, and cold extrusion processing number of times depend on pigtail taper sleeve 1 first end
The limit of the external diameter of the screw hole 141 in portion 14 and the ratio of the external diameter of unprocessed seamless steel pipe 2 and the material of seamless steel pipe 2 originally
Necking coefficient compares and judged.
Illustrate, the external diameter of first end 14 of the pigtail taper sleeve 1 of the application is 28mm, the seamless steel pipe 2 before processing
External diameter is 45mm, and the limit necking coefficient of seamless steel pipe 2 goes out pigtail taper sleeve 1 between 0.7 and 0.75 by above-mentioned numerical computations
The ratio of the external diameter of first end 14 and the external diameter of unprocessed seamless steel pipe 2 originally is 0.62, and it is less than limit necking coefficient, institute
The external diameter of the first end 21 of seamless steel pipe 2 disposably can not be contracted into 28mm from 45mm.Therefore the application is to seamless
The first end 21 of steel pipe 2 is processed using cold extrusion twice, slowly reduces the first opening of the first end 21 of seamless steel pipe 2
213 external diameter, first time cold extrusion is processed first by the reduced diameter of the first end 21 of seamless steel pipe 2 to 33.75mm, through first
The of seamless steel pipe 2 before the external diameter of first opening 213 of the first end 21 of the seamless steel pipe 2 of secondary cold extrusion processing and processing
The ratio of the external diameter of first opening 213 of one end 21 is 0.75, just meets the upper limit of limit necking coefficient, it is possible to one
The first of seamless steel pipe 2 the be open 213 external diameter from 45mm is contracted to secondary property 33.75mm.Being processed through second of cold extrusion will
The reduced diameter of the first end 21 for the seamless steel pipe 2 processed through first time cold extrusion adds to 25.3mm through second of cold extrusion
First opening 213 of the external diameter of first opening 213 of the seamless steel pipe 2 of work with processing seamless steel pipe 2 through first time cold extrusion
The ratio of external diameter is 0.75, just meets the upper limit of limit necking coefficient, it is possible to disposably by the first of seamless steel pipe 2
The external diameter of opening 213 is contracted to 25.3mm from 33.75mm.Cold extrusion of the application to the first end 21 of seamless steel pipe 2 is processed
For preferred embodiment, it processes number of times using minimum cold extrusion, the cost produced by process, lifting processing can be reduced
Efficiency.The number of times of certain cold extrusion processing can increase, and be repeated no more in this.
Also referring to Fig. 5, it is the schematic diagram of the completion step S13 of the embodiment of the application one seamless steel pipe 2；Such as
Shown in figure, step S13 is performed, places cold extrusion processing is entered to the second end 22 of seamless steel pipe 2, by two moulds to completing
Step S12 seamless steel pipe 2 enters places cold extrusion processing, and the second end 22 of seamless steel pipe 2 is formed by the second hollow cylinder 221
Second beveled cone, and being connected with the first beveled cone 212 of first end 21, the external diameter of the second opening 222 of the second end 22 from
45mm is contracted to 33mm, make the second end 22 second be open 222 external diameter meet pigtail taper sleeve 1 the second end 15 opening
151 external diameter, the second end 22 of seamless steel pipe 2 only will may conform to the second of pigtail taper sleeve 1 by the processing of once cold extrusion pressure
End 15, it is because of the external diameter and the seamless steel pipe through second of cold extrusion processing of the opening 151 of the second end 15 of pigtail taper sleeve 1
The ratio of the external diameter of 2 the second opening 222 is 0.73, more than the lower limit of the limit necking coefficient of seamless steel pipe 2, it is possible to one
The second of seamless steel pipe 2 the be open 222 external diameter from 45mm is contracted to secondary property 33mm..
That above-mentioned steps S13 is to carry out cold extrusion processing using hydraulic press, and the tonnage of hydraulic press is according to seamless steel pipe 2
Extruding force selection needed for the second end 15 of the formation pigtail taper sleeve 1 of the second end 22, extruding force can calculate public by extruding force
Formula is calculated, and its calculation formula is
Unit：N
Wherein PSqueezeIt is the extruding force of crimping section；K is and the coefficient from device-dependent；F is orthogonal with extruding force
Forging projected area,σbIt is intensity authority of the metal in no-draft forging temperature；D is the original of seamless steel pipe 2
Beginning external diameter；D is the external diameter of the opening 151 of the second end 15 of pigtail taper sleeve 1.
The application uses hydraulic press, so it is 1590mm that k-factor, which is 10, F,2, D is 45mm, and d is 35.48mm, σbIt is
245MPa, above-mentioned numerical value is brought into calculation formula, P is tried to achieveSqueezeIt is 2665690N, so the application uses 315 tons of hydraulic press
Carry out cold extrusion processing.Hydraulic press can be changed to crank press certainly into, the wherein number of strokes of crank press is less than per second
Between 30 times and 40 times, k-factor is 12.5；The number of strokes of crank press is more than between 30 times per second and 40 times, and k-factor is 15.
Treat after the completion of above-mentioned steps, also referring to Fig. 6 A and 6B, it is the completion step S14 of the embodiment of the application one
Seamless steel pipe 2 schematic diagram；As shown in the figure, step S14 is performed, is flattened, by two moulds to completing the seamless of step S13
Steel pipe 2 carries out flattening processing, and two moulds are located at the left and right sides of seamless steel pipe 2 respectively, and extrude seamless steel pipe 2, make seamless
Steel pipe 2 is flat, and the thickness for the seamless steel pipe 2 being crushed is 28mm.Completing the seamless steel pipe 2 after step S14 includes circular arc
Top surface 23, left surface 24, right flank 25 and bottom surface 26, the bottom surface 26 in first end 21 have the first inclined-plane 261, are located at
Bottom surface 26 in the second end 22 has the second inclined-plane 262, in addition to the first of the first end 21 of maintenance seamless steel pipe 2 is oblique
Angle between the bus C1 of face 261 and circular arc top surface 23 is constant, during flattening, maintains the circular arc top surface 23 of seamless steel pipe 2
Bus C1 be straight line.
Then step S15 is performed, then refers to Fig. 7 in the lump, it is the seamless of the completion step S16 of the embodiment of the application one
The schematic diagram of steel pipe 2；As shown in the figure, the first inclined-plane 261 of the first end 21 of excision seamless steel pipe 2, and in first end 21
Upper formation diagonal cut joint 263 (diagonal cut joint 131 equivalent to Fig. 1).Step S16 is finally performed, to the first end 22 of seamless steel pipe 2
The first opening 213 carry out punching tapping, and the screw hole 141 of pigtail taper sleeve 1 is formed, while being formed at the two of pigtail taper sleeve 1
Perforation 16, so completes production pigtail taper sleeve 1.
Above-mentioned production technology is the preferred embodiment of the application, and the production technology of the application can be according to the rope to be produced
The size of nose cone set is adjusted, and the number of times of the especially cold extrusion processing of the first end to seamless steel pipe and the second end can
It is adjusted.
In summary, in one or more embodiments of the application, the pigtail taper sleeve 1 of the application is to use seamless steel pipe simultaneously
Processed by cold extrusion, different conventional using casting processing, the process of the production technology of the application is compared with the work that casting is processed
Sequence is few, can improving production efficiency, save material, save production cost.
The upper only presently filed embodiment, is not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.It is all any modifications made in spirit herein and principle, equivalent
Replace, improve etc., it all should be included within the scope of claims hereof.
Claims (7)
1. a kind of production technology of pigtail taper sleeve, it is characterised in that including：
Blanking, obtains seamless steel pipe, and the length and external diameter of the seamless steel pipe are set according to the size for the pigtail taper sleeve to be produced,
The seamless steel pipe has first end and the second end；
Cold extrusion processing is carried out to the first end of the seamless steel pipe, meets the external diameter of the first end of the seamless steel pipe
The external diameter of the first end for the pigtail taper sleeve to be produced, the first end of the seamless steel pipe has the first beveled cone；
Cold extrusion processing is carried out to the second end of the seamless steel pipe, meets the external diameter of the second end of the seamless steel pipe
The outside dimension of the second end for the pigtail taper sleeve to be produced, the second end of the seamless steel pipe has the second beveled cone；
The seamless steel pipe after being processed through cold extrusion is flattened, the seamless steel pipe of flat, the first of the seamless steel pipe is formed
End has the first inclined-plane, and its second end has the second inclined-plane；
The first inclined-plane of the first end of the seamless steel pipe through flattening is cut off, diagonal cut joint is formed in the seamless steel pipe；With
And
Punching tapping is carried out to the first end of the seamless steel pipe, in one end of the first end of the seamless steel pipe after flattening,
And perforation is formed respectively in the left surface and right flank of the seamless steel pipe after flattening, two perforation are relative.
2. the production technology of pigtail taper sleeve according to claim 1, it is characterised in that to the first end of the seamless steel pipe
The cold extrusion that portion carries out cold extrusion processing and includes carrying out the first end of the seamless steel pipe at least one times is processed, described seamless
The number of times that the first end of steel pipe carries out cold extrusion processing is set according to the external diameter of the first end for the pigtail taper sleeve to be produced.
3. the production technology of pigtail taper sleeve according to claim 2, it is characterised in that each time to the seamless steel pipe
It is to carry out cold extrusion processing to the seamless steel pipe by two moulds that first end, which carries out cold extrusion processing,.
4. the production technology of pigtail taper sleeve according to claim 1, it is characterised in that to the second end of the seamless steel pipe
The cold extrusion that portion carries out cold extrusion processing and includes carrying out the second end of the seamless steel pipe at least one times is processed, described seamless
The number of times that the second end of steel pipe carries out cold extrusion processing is set according to the external diameter of the second end for the pigtail taper sleeve to be produced.
5. the production technology of pigtail taper sleeve according to claim 4, it is characterised in that each time to the seamless steel pipe
It is to carry out cold extrusion processing to the seamless steel pipe by two moulds that the second end, which carries out cold extrusion processing,.
6. the production technology of pigtail taper sleeve according to claim 1, it is characterised in that each time to the seamless steel pipe
It is to carry out cold extrusion processing, institute to the seamless steel pipe by hydraulic press or crank press that the second end, which carries out cold extrusion processing,
The tonnage for stating hydraulic press or crank press is second that the pigtail taper sleeve is formed according to the second end of the seamless steel pipe
Extruding force selection needed for end.
7. the production technology of pigtail taper sleeve according to claim 1, it is characterised in that flatten the institute after being processed through cold extrusion
State seamless steel pipe be included in flatten during keep seamless steel pipe top surface bus be straight line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610075160.1A CN105537882B (en) | 2016-02-02 | 2016-02-02 | A kind of production technology of pigtail taper sleeve |
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| CN201610075160.1A CN105537882B (en) | 2016-02-02 | 2016-02-02 | A kind of production technology of pigtail taper sleeve |
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| CN105537882B true CN105537882B (en) | 2017-08-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018090316A1 (en) * | 2016-11-18 | 2018-05-24 | 南通昌荣机电有限公司 | New method for manufacturing rope end taper sleeve |
| CN111960216B (en) * | 2020-07-07 | 2024-02-27 | 广州淮工精诚工业科技有限公司 | Rope end taper sleeve and stamping production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3978567A (en) * | 1973-03-19 | 1976-09-07 | Chrysler Corporation | Method of making a catalytic reactor for automobile |
| CN1076388A (en) * | 1992-03-14 | 1993-09-22 | 绍兴县兴宝冷拔钢管厂 | Inequal wall seamless metal tube and processing method |
| CN1048433C (en) * | 1997-03-05 | 2000-01-19 | 许福林 | Method for making cone-shaped pipe by extrusion |
| US20120042494A1 (en) * | 2010-08-17 | 2012-02-23 | Fay James E | Rope thimble with closed curve |
| CN104128744A (en) * | 2014-06-26 | 2014-11-05 | 梧州恒声电子科技有限公司 | Reducing process for producing T iron by cold forging |
| CN104400335A (en) * | 2014-10-24 | 2015-03-11 | 陕西天财工程造价咨询有限公司 | Taper sleeve processing method |
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