CN2434075Y - Appts of carrying out small pilger head for rolling - Google Patents
Appts of carrying out small pilger head for rolling Download PDFInfo
- Publication number
- CN2434075Y CN2434075Y CN 00223360 CN00223360U CN2434075Y CN 2434075 Y CN2434075 Y CN 2434075Y CN 00223360 CN00223360 CN 00223360 CN 00223360 U CN00223360 U CN 00223360U CN 2434075 Y CN2434075 Y CN 2434075Y
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- CN
- China
- Prior art keywords
- head
- rolling
- push rod
- diameter
- pilger
- 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
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- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The utility model relates to a device for rolling a small pilger head, which is especially suitable for reducing the pilger head when an elongater of a periodical rolling tube machine set is used for elongating a capillary tube. A push rod of the elongater of the periodical rolling tube machine set is provided with a section of push rod step which is slightly smaller than or is the same as the diameter of a push head, or the diameter of the whole length of the elongation push rod can be slightly less than or can be the same as the diameter of the push head. Roller boxes at the outlet sides of elongated rollers are respectively provided with two side pressure water cylinders. When the elongation of the capillary tube is finished almost, the side pressure water cylinders are started to reduce the distance of the rollers at the outlet sides, the wall and diameter reduction of the tail end of the elongated capillary tube can be carried out under the support of the push rod, and thereby, the purposes of the wall and diameter reduction of the pilger head can be realized. Finally, the rolling of the small pilger head can be realized on the periodical rolling tube elongater, and the yield of the periodical rolling tube machine can be improved.
Description
The utility model relates to the stress metal processing unit (plant), particularly realizes the rolling device of cuticle erg head.
Pilger mill unit extension process mainly is to extend the size that the top diameter obtains hollow billet by adjusting the roller case position of extending roller and changing, when the pilger mill tube rolling, extending the hollow billet tail end can not roll to the greatest extent all the time, stay next Pierre's wresting, the size of Pierre's wresting is mainly extended the influence of the roll forging rolling land length of the external diameter of hollow billet and wall thickness and cycle milling train.At present, when the pilger mill unit was produced seamless steel pipe, the weight of Pierre's wresting accounted for about 8% of steel ingot weight, compares with other tube rolling unit, and the lumber recovery of pilger mill unit is relatively low.
The purpose of this utility model is to design a kind of device of the Pierre's of reducing wresting, reduces the weight of Pierre's wresting, improves the lumber recovery of pilger mill unit.
Realize that method of the present utility model is: partly carry out suitable transformation by elongator to the pilger mill unit, when design is extended on the push rod, make the diameter of push rod one section (or total length) identical or smaller, and on the roller case of two extension roll outlet sides, design two side pressure water vats respectively with the top diameter.According to the technological requirement of a certain specification steel pipe of Pilger mill milling, calculate the external diameter and the wall thickness of hollow billet, adjust the pass of elongator and determine the top diameter according to this external diameter and wall thickness.When hollow billet will soon have extended, start two side pressure water vats, two side pressure water vats are depressed, the roll spacing of outlet side reduces, herein because the supporting role of the step on push rod or the push rod, can reduce the wall thickness and the external diameter of hollow billet tail end, thereby reach the external diameter that reduces Pierre's wresting and the purpose of wall thickness, realize that the nose heave amount of Pilger alleviates.After the hollow billet extension was finished, two side pressure water vats were adjusted to original position and are begun to carry out the extension of second hollow billet.
The utility model will be illustrated by its specific embodiments and the drawings.
Schematic diagram when Fig. 1 represents the hollow billet extension.
Schematic diagram when Fig. 2 represents hollow billet pressure tail.
Realize preferred plan of the present utility model below in conjunction with description of drawings,, calculate the external diameter and the wall thickness of hollow billet (1), adjust the pass of elongator and the diameter of definite top (2) by this external diameter and wall thickness according to the technological requirement of a certain specification steel pipe of cycle mill milling.Go up one section of design and come directly towards the smaller or identical push rod step (3) of (2) diameter extending push rod (4), design two side pressure water vats (5) respectively on the roller case of two extension rolls (6) outlet side, when extension hollow billet (1) will soon have extended, two side pressure water vats are depressed, reduce the outlet side roll spacing, because the supporting role of push rod step (3) herein, thereby the tube reducing of realizing hollow billet (1) subtracts wall, reaches the effect that reduces Pierre's wresting.After hollow billet (1) extension was finished, two side pressure water vats (5) were adjusted to the extension that second hollow billet carried out in the home position.
After adopting this device, reduced the nose heave amount of Pilger significantly, the ratio that the weight of Pierre's wresting accounts for steel ingot weight drops to about 5% by original 8%, and the lumber recovery of pilger mill unit has improved 2～3%.
Claims (1)
1, a kind of rolling device of cuticle erg head of realizing is characterized in that extending on the push rod one section of design and coming directly towards the smaller or identical push rod step (3) of diameter, and design two side pressure water vats (5) respectively on the roller case of two extension roll outlet sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00223360 CN2434075Y (en) | 2000-08-24 | 2000-08-24 | Appts of carrying out small pilger head for rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00223360 CN2434075Y (en) | 2000-08-24 | 2000-08-24 | Appts of carrying out small pilger head for rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2434075Y true CN2434075Y (en) | 2001-06-13 |
Family
ID=33587924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00223360 Expired - Fee Related CN2434075Y (en) | 2000-08-24 | 2000-08-24 | Appts of carrying out small pilger head for rolling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2434075Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394511A (en) * | 2013-07-23 | 2013-11-20 | 衡阳华菱钢管有限公司 | Steel pipe rolling method without generation of Pilger bell ends |
-
2000
- 2000-08-24 CN CN 00223360 patent/CN2434075Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394511A (en) * | 2013-07-23 | 2013-11-20 | 衡阳华菱钢管有限公司 | Steel pipe rolling method without generation of Pilger bell ends |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010613 |