CN202461286U - Die for steel pipe finishing machine - Google Patents
Die for steel pipe finishing machine Download PDFInfo
- Publication number
- CN202461286U CN202461286U CN2011205608797U CN201120560879U CN202461286U CN 202461286 U CN202461286 U CN 202461286U CN 2011205608797 U CN2011205608797 U CN 2011205608797U CN 201120560879 U CN201120560879 U CN 201120560879U CN 202461286 U CN202461286 U CN 202461286U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- die
- finishing
- finished
- mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides a die for a steel pipe finishing machine. The die comprises an upper die and a lower die, wherein the upper die and the lower die respectively comprise a base body; a bead welding layer is arranged inside each base body; and a transition section is arranged at the pipe inlet side of each of the upper die and the lower die. By virtue of the die for the steel pipe finishing machine, the rigidity of the die is high, the difficulty in thermal treatment of the die and the difficulty of mechanical machining after the thermal treatment can be reduced, and the cost is saved. Furthermore, the die avoids the phenomenon that the die which is damaged by a welding line of the steel pipe needing to be finished squeezes the steel pipe needing to be finished to be damaged, so that the quality of the finished steel pipe is improved, and the service life of the finishing die is prolonged simultaneously. A transition section is arranged on the pipe inlet side of the die, so that the sudden deformation generated at the junction of the finished steel pipe and the non-finished steel pipe can be effectively prevented, and the steel pipe needing to be finished is free from stress variation and a pressed dead elbow, so that the roundness and the surface quality of the refined steel pipe can be improved.
Description
Technical field
The utility model relates to the auxiliary equipment of steel pipe finishing machine in the straight welded pipe production line, relates in particular to a kind of steel pipe finishing machine mould that the different size steel pipe is carried out finishing.
Background technology
Steel pipe finishing machine mould is a finishing mold of manufacturing the industry design specially for ERW, is mainly used in the finishing to outer diameter of steel pipes.Mainly there is following problem in use in steel pipe finishing machine mould in the past:
1, after heat treatment hardness is too low for upper and lower steel pipe finishing machine mould; Because required finishing steel pipe has the straight weld of a protrusion; Weld hardness is higher; Usually earlier on upper and lower steel pipe finishing machine mould, extrude impression, wound is squeezed with required finishing steel pipe in impression protrusion position when finishing next time, reduced required finishing pipe quality.
2, the cavity dimension of upper and lower steel pipe finishing machine mould designs by the nominal outside diameter of required finishing steel pipe, and required finishing steel pipe is extruded at the place, matched moulds slit of upper and lower steel pipe finishing machine mould easily.
3, the matched moulds slit of upper and lower steel pipe finishing machine mould is unreasonable, thereby the outer wall of required finishing steel pipe is scratched, and has had a strong impact on required finishing pipe quality and outward appearance.
In view of above deficiency, need to improve the product quality that steel pipe finishing machine mould improves required finishing steel pipe.
The utility model content
The purpose of the utility model is to provide a kind of rational in infrastructure, steel pipe finishing machine mould that can effectively improve tube quality and precision after the finishing.
For realizing above-mentioned purpose, the technical scheme that the utility model is taked is:
A kind of steel pipe finishing machine mould comprises upper and lower mould, and said upper and lower mould comprises matrix respectively, and the inside of said matrix is provided with overlay cladding; The inlet pipe side of said upper and lower mould is provided with changeover portion.
Said matrix adopting ZG40Cr material, said overlay cladding adopts the 1Cr13 material.
The cavity dimension of said upper and lower mould is greater than the external diameter of required finishing steel pipe, the digonous back gauge of said upper and lower mould greater than said upper and lower mould matched moulds after the external diameter of required finishing steel pipe.
The steel pipe finishing machine mould that adopts the utility model to provide; The hardness of mould is high; Reduced mach difficulty after heat treated difficulty of mould and the heat treatment, practiced thrift cost, and the impaired mould that has caused after having avoided required finishing steel pipe seam to the mould damage squeezes the phenomenon of hindering required finishing steel pipe; Improve pipe quality after the finishing, also prolonged the service life of die finish simultaneously.The changeover portion that mould inlet pipe side is provided with; Effectively prevent the rapid distortion that steel pipe after the finishing and finishing steel pipe not produce in the junction; Avoid the STRESS VARIATION of required finishing steel pipe even the situation of extrusion dog leg, thereby improved the circularity and the surface quality of steel pipe after the finishing.
Description of drawings
Fig. 1 is the utility model structural representation front view.
Fig. 2 is the utility model structural representation left view.
Fig. 3 is a structural representation behind the utility model mould matched moulds.
Among the figure, 1-inlet pipe side, 2-changeover portion; The 3-matrix, 4-overlay cladding, the required finishing steel pipe of 5-nominal outside diameter D; The cavity dimension D ' of 6-finishing mold, the upper and lower finishing mold matched moulds of 7-anterior diastema H, the digonous back gauge L of 8-finishing mold; The upper and lower finishing mold matched moulds of 9-post gap h, steel pipe sizes L ' behind the upper and lower finishing mold matched moulds of 10-.
The specific embodiment
Below in conjunction with specific embodiment and accompanying drawing thereof the utility model is described further.
A kind of steel pipe finishing machine mould as shown in Figure 1, that the utility model provides comprises upper and lower mould, and upper and lower mould comprises the matrix 3 of ZG40Cr material respectively, and the inside built-up welding of matrix 3 has the overlay cladding 4 of 1Cr13 material.The inlet pipe side 1 of upper and lower mould uses machine tooling to go out the changeover portion 2 that chamfering is 20 degree.The cavity dimension of upper and lower mould is greater than the external diameter of required finishing steel pipe, the digonous back gauge of upper and lower mould greater than upper and lower mould matched moulds after the external diameter of required finishing steel pipe.
Mould is composited by matrix 3 and overlay cladding 4 up and down; The hardness of overlay cladding 4 reaches HRC45～55; Thereby improved the integral hardness of finishing mold, made the weld seam of required finishing steel pipe can not weigh finishing mold wounded, prevented that impaired finishing mold from squeezing the required finishing steel pipe of wound; Improve pipe quality after the finishing, also prolonged the service life of finishing mold simultaneously.This structure has also reduced machined difficulty after heat treatment difficulty and the heat treatment of finishing mold, has practiced thrift production cost.
Use machine tooling to go out the changeover portion 2 that chamfering is 20 degree in the inlet pipe side 1 of finishing mold; Avoided after the finishing steel pipe and finishing steel pipe not to produce sharply distortion in the junction; The STRESS VARIATION of the required finishing steel pipe that causes even extrusion dog leg phenomenon, thus the circularity and the surface quality of steel pipe after the finishing improved.
As shown in Figure 2, cavity dimension 6 is D ', and upper and lower finishing mold matched moulds anterior diastema 7 is H, and required finishing steel pipe nominal outside diameter 5 is D, and the digonous back gauge 8 of finishing mold is L.
As shown in Figure 3, upper and lower finishing mold matched moulds post gap 9 is h, and steel pipe sizes 10 is L ' behind the upper and lower finishing mold matched moulds.
Since required finishing steel pipe before upper and lower finishing mold matched moulds with matched moulds after girth constant; Required finishing steel pipe girth is π D before the matched moulds; Required finishing steel pipe girth is π D '-2 (H-h) behind the matched moulds, π D=π D '-2 (H-h) then, D '=D+2 (H-h)/π.H-h is required finishing steel pipe maximum deformation quantity, is certain value, and this value can confirm according to the control tolerance of preface on the required finishing steel pipe, thereby can confirm the cavity dimension D ' of finishing mold.
For guarantee upper and lower finishing mold in the matched moulds process up and down seamed edge can not touch required finishing outer surface of steel tube; Then the digonous back gauge L of finishing mold must be more than or equal to the external diameter L ' of required finishing steel pipe behind the upper and lower finishing mold matched moulds;
; And L '=D+ (H-h), then
.H-h is required finishing steel pipe maximum deformation quantity, is certain value, and this value can confirm according to the control tolerance of preface on the required finishing steel pipe, thereby can confirm the upper and lower die finish matched moulds anterior diastema H of finishing mold.
Above-described only is the preferred embodiment of the utility model, does not limit to the utility model.Should be understood that for the person of ordinary skill of the art; Under the teachings that the utility model provided, utilize the common practise of mechanical field, can also make other equivalent modifications and improvement; All can realize the purpose of the utility model, all should be regarded as the protection domain of the utility model.
Claims (3)
1. a steel pipe finishing machine mould comprises upper and lower mould, it is characterized in that, said upper and lower mould comprises matrix (3) respectively, and the inside of said matrix (3) is provided with overlay cladding (4); The inlet pipe side (1) of said upper and lower mould is provided with changeover portion (2).
2. according to the said steel pipe finishing machine of claim 1 mould, it is characterized in that said matrix (3) adopts the ZG40Cr material, said overlay cladding (4) adopts the 1Cr13 material.
3. according to claim 1 or 2 said steel pipe finishing machine moulds; It is characterized in that; The cavity dimension of said upper and lower mould is greater than the external diameter of required finishing steel pipe, the digonous back gauge of said upper and lower mould greater than said upper and lower mould matched moulds after the external diameter of required finishing steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205608797U CN202461286U (en) | 2011-12-29 | 2011-12-29 | Die for steel pipe finishing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205608797U CN202461286U (en) | 2011-12-29 | 2011-12-29 | Die for steel pipe finishing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202461286U true CN202461286U (en) | 2012-10-03 |
Family
ID=46909484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205608797U Expired - Fee Related CN202461286U (en) | 2011-12-29 | 2011-12-29 | Die for steel pipe finishing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202461286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605179A (en) * | 2020-11-10 | 2021-04-06 | 有研金属复材技术有限公司 | Method and mould for correcting section roundness of metal pipe |
-
2011
- 2011-12-29 CN CN2011205608797U patent/CN202461286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605179A (en) * | 2020-11-10 | 2021-04-06 | 有研金属复材技术有限公司 | Method and mould for correcting section roundness of metal pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106903194B (en) | A method of improving the metal 3 D auto bending forming limit | |
| CN101954389B (en) | Metal elbow cold extrusion molding device | |
| CN103934638B (en) | A kind of accurate external splines pipe manufacturing process | |
| CN103753118A (en) | Bending method of large-diameter thin-wall aluminum pipe and die | |
| CN101428319A (en) | Pre-bend mould | |
| CN102430626B (en) | Thin-wall equant (small)-radius elbow secondary forming device and secondary forming method thereof | |
| CN202461286U (en) | Die for steel pipe finishing machine | |
| CN101961733A (en) | Metal elbow cold extrusion molding method | |
| CN104646532A (en) | Hot press forming mold of diversion pipe for ship | |
| CN201815578U (en) | Cold extruding mold core of metal bent pipe | |
| CN101890449A (en) | Integral spinning forming process for special pipes and support device thereof | |
| CN102513796B (en) | Machining process for inner conductor of ferrite stub | |
| CN109604390B (en) | Thin-wall sheet metal part forming method | |
| CN202667304U (en) | Metal bend extrusion forming device | |
| CN203664572U (en) | Long-pole type high-accuracy mold structure | |
| CN203484525U (en) | Novel pipe bending, flaring and flanging die | |
| CN102581565B (en) | Rolling process for sphere parts | |
| CN203679019U (en) | Hot press molding die for marine honeycomb duct | |
| CN205496289U (en) | Mould that three round pin shaft yoke of production used | |
| CN105344898A (en) | One-time thread-rolling molding method and mold for bobtail rivet | |
| CN205113599U (en) | Preceding yoke and front fork | |
| CN204338728U (en) | Nonstandard end socket template | |
| CN105215113B (en) | A kind of continuous recurvation Aluminum Alloy Tube pushes away o ing device and method | |
| CN106077132B (en) | A kind of manufacturing process and forming device of the double weld seam threeways of large plate system | |
| CN109465332A (en) | Plain thrust bearing intermediate plate automatic press moulding process |
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: 20121003 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |