CN205147036U - Flat seamless steel pipe shaping centre form - Google Patents
Flat seamless steel pipe shaping centre form Download PDFInfo
- Publication number
- CN205147036U CN205147036U CN201520736804.8U CN201520736804U CN205147036U CN 205147036 U CN205147036 U CN 205147036U CN 201520736804 U CN201520736804 U CN 201520736804U CN 205147036 U CN205147036 U CN 205147036U
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- die body
- chamfering
- steel pipe
- chamfer
- iii
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Abstract
The utility model discloses a flat seamless steel pipe shaping centre form, including a rectangular die body, the one end with seamless steel pipe direction of motion relative direction on the die body is the anterior segment, and the other end is the back end, four long edges of die body all are provided with chamfer I, and four limits on the terminal surface of die body back end all are provided with chamfer II, and four edges on the terminal surface of die body anterior segment all are provided with chamfer III, chamfer I, chamfer II are circular -arc -shaped chamfer, and chamfer III is the plane chamfer, the radian of chamfer III is pi / 5 - pi / 2, pi and is the circular constant, the length of chamfer III is 1.5 - 3CM, and the angle is the 11 -20 degree. The utility model has the advantages of prior art's drawback, the reasonable novelty of structural design can be overcome to it.
Description
Technical field
The utility model relates to the shaping internal mold of a kind of flat seamless steel pipe, belongs to seamless steel pipe field.
Background technology
Seamless steel pipe has hollow section, and a large amount of pipeline being used as conveying fluid, as transfer oil, natural gas, coal gas, water and some solid material etc.Seamless steel pipe compared with the solid steel such as round steel, under identical bending resistance torsional strength, the lighter in weight of seamless steel pipe; Meanwhile, seamless steel pipe is also widely used in manufacturing structure part and machine components, and as the steel scaffold etc. in oil drill rocker, truck drive shaft, bicycle rack and construction, stock utilization is high, and manufacturing process is simple and easy, and machining period reduces.Just because of the particularity of seamless steel pipe purposes, therefore, need to use various production equipment in the production process of seamless steel pipe, cold drawing die is exactly produce one very important in seamless steel pipe equipment.Internal mold is one of important mould in seamless steel tube production, and its Main Function carries out perforation processing to steel billet exactly.But existing most of cold drawing die comes with some shortcomings part in structural design, and cannot ensure the production precision of seamless steel pipe, the quality of production is low, and mould easily damages.
Utility model content
For the deficiency that prior art exists, technical problem to be solved in the utility model is, provides a kind of flat seamless steel pipe shaping internal mold, and the life-span is high, perforation quality is good.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is, the shaping internal mold of a kind of flat seamless steel pipe, comprises a rectangular die body, and die body is leading portion with one end of seamless steel pipe direction of motion relative direction, and the other end is back segment; Four long limits are provided with chamfering I to described die body, and the four edges on the end face of die body back segment is provided with chamfering II, the four edges on the end face of die body leading portion is provided with chamfering III; Described chamfering I, chamfering II are circular arc chamfering, and chamfering III is plane chamfering; The radian of described chamfering III is ∏/5-∏/2, and ∏ is pi; The length of described chamfering III is 1.5-3CM, and angle is 11-20 degree; Described die body leading portion is provided with round slip surface, and the surface roughness of round slip surface is 0.1-0.8 micron, and on die body, the surface roughness on other surface is 1.6-3.2 micron; The length of described smooth surface at least accounts for 60% of die body total length; The surface of described die body leading portion is coated with metal ceramic wear-resisting layer.
Optimize, the shaping internal mold of above-mentioned flat seamless steel pipe, the radian of described chamfering I is ∏/2, and the length of chamfering III is 2.5CM, and angle is 15 degree; The surface roughness of described round slip surface is 0.15 micron, and on die body, the surface roughness on other surface is 1.8 microns.
The utility model has the advantage of that it can overcome the drawback of prior art, reasonable in design is novel.Chamfering II can prevent Leading Edge Deformation in process of production at steel pipe, occurs the bad phenomenon such as burr, improves the quality of production.Seamless steel pipe internal mold machined metal ceramic wear-resisting layer in extremely flimsy working end; this alloy coat has following characteristics: be metallurgical binding with internal mold matrix; and hardness is large, highly polished, resistance to elevated temperatures is good; the impact of severe friction and high temperature, high pressure in perforation process can be resisted, thus play the effect of protection internal mold matrix.Therefore the service life of internal mold can greatly be improved.The chamfering I that die body four long limits are all arranged can prevent internal mold producing excessive friction through during steel pipe inner wall, causes internal mold to wear and tear, and reduces the life-span of internal mold.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the left TV structure schematic diagram of Fig. 1;
In figure: 1 be leading portion, 2 be back segment, 3 for chamfering I, 4 for chamfering II, 5 for chamfering III, 6 is round slip surface.
Detailed description of the invention
Technical characterstic of the present invention is set forth further below in conjunction with accompanying drawing and specific embodiment.
Embodiment 1
The utility model is the shaping internal mold of a kind of flat seamless steel pipe, comprises a rectangular die body, and die body is leading portion with one end of seamless steel pipe direction of motion relative direction, and the other end is back segment; Four long limits are provided with chamfering I to described die body, and the four edges on the end face of die body back segment is provided with chamfering II, the four edges on the end face of die body leading portion is provided with chamfering III; Described chamfering I, chamfering II are circular arc chamfering, and chamfering III is plane chamfering; The radian of described chamfering III is ∏/2, and ∏ is pi; The length of described chamfering III is 1.5-3CM, and angle is 11 degree; Described die body leading portion is provided with round slip surface, and the surface roughness of round slip surface is 0.1 micron, and on die body, the surface roughness on other surface is 1.6 microns; The length of described smooth surface at least accounts for 60% of die body total length; The surface of described die body leading portion is coated with metal ceramic wear-resisting layer.
The utility model has the advantage of that it can overcome the drawback of prior art, reasonable in design is novel.Chamfering II can prevent Leading Edge Deformation in process of production at steel pipe, occurs the bad phenomenon such as burr, improves the quality of production.Seamless steel pipe internal mold machined metal ceramic wear-resisting layer in extremely flimsy working end; this alloy coat has following characteristics: be metallurgical binding with internal mold matrix; and hardness is large, highly polished, resistance to elevated temperatures is good; the impact of severe friction and high temperature, high pressure in perforation process can be resisted, thus play the effect of protection internal mold matrix.Therefore the service life of internal mold can greatly be improved.The chamfering I that die body four long limits are all arranged can prevent internal mold producing excessive friction through during steel pipe inner wall, causes internal mold to wear and tear, and reduces the life-span of internal mold.
Embodiment 2
The difference of the present embodiment and embodiment 1 is that the radian of chamfering III is ∏/5, and the length of chamfering III is 3CM, and angle is 20 degree, and the surface roughness of round slip surface is 0.8 micron, and on die body, the surface roughness on other surface is 3.2 microns.
Embodiment 3
The difference of the present embodiment and embodiment 1 is that the radian of chamfering I is ∏/4, and the length of chamfering III is 2.5CM, and angle is 15 degree; The surface roughness of described round slip surface is 0.15 micron, and on die body, the surface roughness on other surface is 1.8 microns.
Certainly, above-mentioned explanation is not to restriction of the present utility model, and the utility model is also not limited to above-mentioned citing; those skilled in the art; in essential scope of the present utility model, the change made, remodeling, interpolation or replacement, all should belong to protection domain of the present utility model.
Claims (2)
1. the shaping internal mold of flat seamless steel pipe, is characterized in that: comprise a rectangular die body, and die body is leading portion with one end of seamless steel pipe direction of motion relative direction, and the other end is back segment; Four long limits are provided with chamfering I to described die body, and the four edges on the end face of die body back segment is provided with chamfering II, the four edges on the end face of die body leading portion is provided with chamfering III; Described chamfering I, chamfering II are circular arc chamfering, and chamfering III is plane chamfering; The radian of described chamfering III is ∏/5-∏/2, and ∏ is pi; The length of described chamfering III is 1.5-3CM, and angle is 11-20 degree; Described die body leading portion is provided with round slip surface, and the surface roughness of round slip surface is 0.1-0.8 micron, and on die body, the surface roughness on other surface is 1.6-3.2 micron; The length of described smooth surface at least accounts for 60% of die body total length; The surface of described die body leading portion is coated with metal ceramic wear-resisting layer.
2. the shaping internal mold of flat seamless steel pipe according to claim 1, is characterized in that: the radian of described chamfering I is ∏/2, and the length of chamfering III is 2.5CM, and angle is 15 degree; The surface roughness of described round slip surface is 0.15 micron, and on die body, the surface roughness on other surface is 1.8 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520736804.8U CN205147036U (en) | 2015-09-23 | 2015-09-23 | Flat seamless steel pipe shaping centre form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520736804.8U CN205147036U (en) | 2015-09-23 | 2015-09-23 | Flat seamless steel pipe shaping centre form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205147036U true CN205147036U (en) | 2016-04-13 |
Family
ID=55682777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520736804.8U Expired - Fee Related CN205147036U (en) | 2015-09-23 | 2015-09-23 | Flat seamless steel pipe shaping centre form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205147036U (en) |
-
2015
- 2015-09-23 CN CN201520736804.8U patent/CN205147036U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20180923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |