CN204638927U - A kind of expander die - Google Patents
A kind of expander die Download PDFInfo
- Publication number
- CN204638927U CN204638927U CN201520308114.2U CN201520308114U CN204638927U CN 204638927 U CN204638927 U CN 204638927U CN 201520308114 U CN201520308114 U CN 201520308114U CN 204638927 U CN204638927 U CN 204638927U
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- Prior art keywords
- expander die
- die body
- expander
- section
- diameter section
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Abstract
The utility model discloses a kind of expander die, comprise expander die body, described expander die body is made up of sizing section and extension diameter section, and sizing section and extension diameter section are formed in one, casting forms, the outer surface of described extension diameter section is cambered surface, and the material of described expander die body is Cr12MoV.The extension diameter section of expander die body is improved to the cambered surface of arc line shaped by this practicality by original skew lines outer surface, make expanding pipe deformation even, pipe end is not easy to crack, the power that steel pipe diameter mould body surface in expanding process produces can be disperseed by cambered surface simultaneously, thus strengthen the range of application of expander die body, also the service life of expander die body is substantially increased, this practicality adopts Cr12MoV material to replace 45 original steel matter, make the inside and outside hardness of expander die body the same, can constantly use the diameter the same with drawing core bar, greatly improve expander die service life.
Description
Technical field
The utility model relates to cold drawing steel tube and produces, specifically a kind of expander die.
Background technology
Existing expansion is pulled out steel pipe and is adopted taper expander die, the modifier treatment of material 45 steel.Taper expander die surface through hardening layer only has about 3mm, and the local hardness of below 3mm is just very little, can not continue to use.In addition, expander die extension diameter section adopts taper, and pipe end distortion is violent, and pipe end is easy to crack.After pipe expansion is pulled out, its internal diameter 2-5mm larger than expansion withdrawing pattern calibrating strap diameter.
Utility model content
The purpose of this utility model is to provide a kind of expander die, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of expander die, comprise expander die body, described expander die body is made up of sizing section and extension diameter section, and sizing section and extension diameter section are formed in one, casting forms, and the outer surface of described extension diameter section is cambered surface, and the material of described expander die body is Cr12MoV.
As further program of the utility model: the arc-shaped outer surface of described extension diameter section and the outer surface of sizing section tangent.
As further program of the utility model: the middle part of described expander die body is provided with installing hole, expander die body connects drawing core bar.
Compared with prior art, the beneficial effects of the utility model are: the extension diameter section of expander die body is improved to the cambered surface of arc line shaped by this practicality by original skew lines outer surface, make expanding pipe deformation even, pipe end is not easy to crack, the power that steel pipe diameter mould body surface in expanding process produces can be disperseed by cambered surface simultaneously, thus strengthen the range of application of expander die body, also the service life of expander die body is substantially increased, and the outer surface of cambered surface and sizing section is tangent, thus make steel pipe from extension diameter section to sizing section excessively evenly, can accurately obtain expanding the internal diameter pulling out rear steel pipe, this practicality adopts Cr12MoV material to replace 45 original steel matter, make the inside and outside hardness of expander die body the same, can constantly use the diameter the same with drawing core bar, greatly improve expander die service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of expander die, comprises expander die body 3, and described expander die body 3 is made up of sizing section 1 and extension diameter section 2, and sizing section 1 and extension diameter section 2 are formed in one, casting forms.
The outer surface of described extension diameter section 2 is cambered surface, expanding pipe deformation is even, pipe end is not easy to crack, and the outer surface of the arc-shaped outer surface of extension diameter section 2 and sizing section 1 is tangent, make steel pipe from extension diameter section 2 to sizing section 1 excessively evenly, can accurately obtain expanding the internal diameter pulling out rear steel pipe, the power that steel pipe diameter mould body 3 surface in expanding process produces can be disperseed by the cambered surface of described extension diameter section 2, thus strengthen the range of application of expander die body 3, also substantially increase the service life of expander die body 3.
The middle part of described expander die body 3 is provided with installing hole, so that expander die body 3 connects drawing core bar.
The material of described expander die body 3 is Cr12MoV, makes the inside and outside hardness of expander die body 3 the same, can constantly use the diameter the same with drawing core bar.
The extension diameter section 2 of expander die body 3 is improved to the cambered surface of arc line shaped by this practicality by original skew lines outer surface, make expanding pipe deformation even, pipe end is not easy to crack, the power that steel pipe diameter mould body 3 surface in expanding process produces can be disperseed by cambered surface simultaneously, thus strengthen the range of application of expander die body 3, also the service life of expander die body 3 is substantially increased, and the outer surface of cambered surface and sizing section 1 is tangent, thus make steel pipe from extension diameter section 2 to sizing section 1 excessively evenly, can accurately obtain expanding the internal diameter pulling out rear steel pipe, this practicality adopts Cr12MoV material to replace 45 original steel matter, make the inside and outside hardness of expander die body 3 the same, can constantly use the diameter the same with drawing core bar, greatly improve expander die service life.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. an expander die, comprises expander die body, and described expander die body is made up of sizing section and extension diameter section, it is characterized in that, the casting that is formed in one of described sizing section and extension diameter section forms, and the outer surface of extension diameter section is cambered surface, and the material of described expander die body is Cr12MoV.
2. a kind of expander die according to claim 1, is characterized in that, the arc-shaped outer surface of described extension diameter section and the outer surface of sizing section tangent.
3. a kind of expander die according to claim 1, is characterized in that, the middle part of described expander die body is provided with installing hole, and expander die body connects drawing core bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520308114.2U CN204638927U (en) | 2015-05-13 | 2015-05-13 | A kind of expander die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520308114.2U CN204638927U (en) | 2015-05-13 | 2015-05-13 | A kind of expander die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204638927U true CN204638927U (en) | 2015-09-16 |
Family
ID=54091703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520308114.2U Expired - Fee Related CN204638927U (en) | 2015-05-13 | 2015-05-13 | A kind of expander die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204638927U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052175A (en) * | 2017-04-28 | 2017-08-18 | 西北有色金属研究院 | A kind of titanium or titanium alloy picks expansion-molding core processed |
| CN109622780A (en) * | 2018-12-17 | 2019-04-16 | 安徽宝泰特种材料有限公司 | A kind of Quick production method of low cost drawing reaming mold |
-
2015
- 2015-05-13 CN CN201520308114.2U patent/CN204638927U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052175A (en) * | 2017-04-28 | 2017-08-18 | 西北有色金属研究院 | A kind of titanium or titanium alloy picks expansion-molding core processed |
| CN107052175B (en) * | 2017-04-28 | 2019-08-06 | 西北有色金属研究院 | A kind of titanium or titanium alloy picks expansion-molding core model processed |
| CN109622780A (en) * | 2018-12-17 | 2019-04-16 | 安徽宝泰特种材料有限公司 | A kind of Quick production method of low cost drawing reaming mold |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20170513 |