CN202655338U - Roller group for intermediate rolling and finish rolling of channel steel - Google Patents
Roller group for intermediate rolling and finish rolling of channel steel Download PDFInfo
- Publication number
- CN202655338U CN202655338U CN 201220232462 CN201220232462U CN202655338U CN 202655338 U CN202655338 U CN 202655338U CN 201220232462 CN201220232462 CN 201220232462 CN 201220232462 U CN201220232462 U CN 201220232462U CN 202655338 U CN202655338 U CN 202655338U
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- roller
- roll
- transition
- knuckle
- fillet
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- Expired - Fee Related
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Abstract
The utility model discloses a roller group for intermediate rolling and finish rolling of channel steel. The roller group comprises an upper roller and a lower roller; and the roller group is characterized in that the radius of a transition fillet R1 of the upper roller is different from that of a transition fillet R2 of the lower roller, wherein the transition fillet R2 of the lower roller is greater than the transition fillet R1 of the upper roller. The roller group changes the condition that the conventional profile steel hole type sidewall and the roll collar transition fillets, namely the transition fillets of the upper and lower rollers, are identical, and the transition fillets of the upper and lower rollers are differentially designed to enable the transition fillet R2 of the lower roller to be greater than the transition fillet R1 of the upper roller. As the transition fillet of the lower roller is enlarged, the stress at the fillet of the lower roller is dispersed, and the lower roller is almost unbreakable. During the intermediate rolling and the finish rolling of the channel steel, the breakage of the lower roller rarely occurs, at most one lower roller is broken within one year, and thus, the production cost is reduced. Simultaneously, as the rollers do not need to be changed, the working efficiency is improved.
Description
Technical field
The utility model relate to roll in the channel-section steel with the finish rolling production process in form the roll stacks of pass.
Background technology
Channel-section steel in roll with the finish rolling production process in form pass roll stacks be divided into topping roll and bottom roll, in the prior art, Pass sidewall and collars knuckle are that the knuckle of top and bottom rolls is all identical.But because the diameter of bottom roll is less, thereby the stress at its knuckle place is concentrated easy fracture herein.When therefore rolling with finish rolling in the channel-section steel, the frequent fracture accident of its bottom roll, rupture more than 2 average every month.Change continually roll, not only increased production cost but also reduced operating efficiency.Simultaneously, the fracture meeting of roll during finish rolling has further improved production cost so that channel-section steel causes in a lot uselessly in process of production.
Summary of the invention
Problem to be solved in the utility model provides a kind of novel roll stacks, it make channel-section steel in roll with finishing stands in reduced the generation of bottom roll phenomenon of rupture, not only reduced production cost but also improved operating efficiency.Simultaneously, reduce the generation of useless situation in the channel-section steel during finish rolling, further reduced production cost.
Roll in the utility model channel-section steel and the finish rolling roll stacks, it comprises topping roll and bottom roll, it is characterized in that: the radius of the knuckle R1 of topping roll and the knuckle R2 of bottom roll is different.
Wherein, the knuckle R2 of bottom roll is greater than the knuckle R1 of topping roll.
It is the identical situation of top and bottom rolls knuckle with the collars knuckle that the utility model has changed existing Pass sidewall, and the filtration fillet of top and bottom rolls is carried out the differentiation design, makes the knuckle R2 of bottom roll greater than the knuckle R1 of topping roll.Because it is large that the knuckle of bottom roll becomes, thus the stress dispersion at fillet place easy fracture not.So when rolling with finish rolling in the channel-section steel, the rare fracture accident of bottom roll, 1 year the most multibreak 1, thereby reduced production cost.Simultaneously, owing to need not to change roll, improved operating efficiency.Simultaneously, useless in also having reduced, reduced production cost.
Description of drawings
Fig. 1 is the schematic diagram of this new roller group.
Fig. 2 is the enlarged diagram at A place among Fig. 1.
The specific embodiment
Roll in the utility model channel-section steel and the finish rolling roll stacks, it comprises topping roll 1 and bottom roll 2, and the knuckle R1 of topping roll 1 is different with the radius of the knuckle R2 of bottom roll 2.
Wherein, the knuckle R2 of bottom roll 2 is greater than the knuckle R1 of topping roll 1.
It is the identical situation of top and bottom rolls knuckle with the collars knuckle that the utility model has changed existing Pass sidewall, and the filtration fillet of top and bottom rolls is carried out the differentiation design, makes the knuckle R2 of bottom roll greater than the knuckle R1 of topping roll.Namely when guaranteeing channel steel rolling under the prerequisite of pass, the knuckle of bottom roll selects large numerical value as far as possible, thereby the stress dispersion that makes fillet place easy fracture not makes the rare fracture accident of bottom roll.
As this novel a kind of optimal way, the knuckle R1 radius of topping roll 1 is R10, and the knuckle R2 radius of bottom roll 2 is R20.
Through after improving, bottom roll 1 year is the most multibreak 1 during channel-section steel finish rolling, with original on average per month disconnected 2 compare, every young roll breakage is more than 20, about every 110,000 yuan on new roller is according to the 80000 yuan of calculating of reducing the loss of every roll, 1,600,000 yuan of annual Roll consumption reductions.Simultaneously, by giving up 5 more than 4 tons in original average each roll breakage generation, young roll breakage gives up 80 tons in reducing for 20 times after improving so, according to processing cost per ton and 1000 yuan of calculating of profit, brings benefits 80,000 yuan every year.
Claims (3)
1. roll in the channel-section steel and the finish rolling roll stacks, it comprises topping roll (1) and bottom roll (2), it is characterized in that: the knuckle R1 of topping roll (1) is different with the radius of the knuckle R2 of bottom roll (2).
2. roll in the channel-section steel according to claim 1 and the finish rolling roll stacks, it is characterized in that: the knuckle R2 of bottom roll (2) is greater than the knuckle R1 of topping roll (1).
3. roll in the channel-section steel according to claim 1 and the finish rolling roll stacks, it is characterized in that: the knuckle R1 radius of topping roll (1) is R10, and the knuckle R2 radius of bottom roll (2) is R20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220232462 CN202655338U (en) | 2012-05-23 | 2012-05-23 | Roller group for intermediate rolling and finish rolling of channel steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220232462 CN202655338U (en) | 2012-05-23 | 2012-05-23 | Roller group for intermediate rolling and finish rolling of channel steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202655338U true CN202655338U (en) | 2013-01-09 |
Family
ID=47450271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220232462 Expired - Fee Related CN202655338U (en) | 2012-05-23 | 2012-05-23 | Roller group for intermediate rolling and finish rolling of channel steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202655338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478481A (en) * | 2015-12-24 | 2016-04-13 | 中钢集团邢台机械轧辊有限公司 | Horizontal roll collar of large rail-beam mill |
-
2012
- 2012-05-23 CN CN 201220232462 patent/CN202655338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105478481A (en) * | 2015-12-24 | 2016-04-13 | 中钢集团邢台机械轧辊有限公司 | Horizontal roll collar of large rail-beam mill |
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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: 20130109 Termination date: 20210523 |