CN2772654Y - Composite roller from hard alloy of tension reducing mill - Google Patents
Composite roller from hard alloy of tension reducing mill Download PDFInfo
- Publication number
- CN2772654Y CN2772654Y CN 200520050663 CN200520050663U CN2772654Y CN 2772654 Y CN2772654 Y CN 2772654Y CN 200520050663 CN200520050663 CN 200520050663 CN 200520050663 U CN200520050663 U CN 200520050663U CN 2772654 Y CN2772654 Y CN 2772654Y
- Authority
- CN
- China
- Prior art keywords
- hard alloy
- roll
- steel bushing
- steel sleeve
- reducing mill
- 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 - Lifetime
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 26
- 239000000956 alloy Substances 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- MHKWSJBPFXBFMX-UHFFFAOYSA-N iron magnesium Chemical compound [Mg].[Fe] MHKWSJBPFXBFMX-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 229910000826 Lo-Ex Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The utility model provides a hard alloy composite roller used for a tension reducing mill, which comprises a steel sleeve which is provided with a key groove and a hard alloy roller ring which is assembled on the surface of a small circular column of the steel sleeve, wherein the hard alloy roller ring tightly leans on the step surface of the steel sleeve; one end of the steel sleeve is designed with outer threads. The utility model also comprises a locking nut which is matched with the outer threads of the steel sleeve. The utility model has the advantages of firm connection, reliable connection, simple structure, low cost, convenient disassembly and convenient assembly.
Description
Technical field
The utility model relates to the stretch-reducing mill roll, in particular for the stretch-reducing mill carbide alloy composite roll of hot rolled seamless steel tube.
Background technology
Usually use the stretch reducing technology to produce seamless steel pipe at present, the stretch reducing roll is the critical component of stretch-reducing mill, and what generally adopt is grain roll or high-speed steel roll, and its major defect is that the rolling life-span is short, and rolling accuracy is not enough.And adopting the rolling life-span of hard alloy roll can improve 20-30 doubly, cost performance is very high, has reduced roll change number of times and downtime, has reduced labour intensity, has improved milling train production utilization rate and output, and the surface quality of stocking is thoroughly improved.But when using hard alloy roll to replace grain roll, since the transmission of former design keyway, and carbide alloy is a fragile material, and keyway greatly reduces the performance of hard alloy roll ring, very high to making required precision simultaneously, rolling varying stress easily makes key connect and produces to be become flexible; Solve this problem of key transmission and mainly contain two kinds of ways: 1, CIC complex technique, promptly, partly spline at magnesium iron at the surface casting magnesium iron of hard alloy roll, avoided directly on hard alloy roll, splining; 2, adopt invar alloy steel (claiming Lo-Ex again) to make it by hot isostatic pressing technique and hard alloy roll between produce metal and connect, make solid roll, connect by key and transmit moment of torsion.CIC and metallurgical bond all are proprietary technologies, and production cost is very high, and particularly to contain the cobalt amount very high for the invar alloy steel that adopts of metallurgical bond, and price and carbide alloy are more or less the same.Therefore the roll of these two fabrication techniques does not all obtain practice at present.
Summary of the invention
The utility model provides a kind of firm and reliable connection, stretch-reducing mill simple in structure novel hard alloy composite roll at above-mentioned deficiency, and with low cost, still can realize the key transmission, and demolition, installation are convenient.
Carbide alloy composite roll of the present utility model comprises the steel bushing of being with keyway, be assemblied on the steel bushing roundlet cylinder and near the hard alloy roll ring of steel bushing step surface, the design of steel bushing one end has external screw thread, and it is characterized in that: it also comprises a locking nut that matches with the external screw thread of described steel bushing.
The utility model adopts mechanical combining structure, and the hard alloy roll ring is assemblied on the steel bushing with certain magnitude of interference, with locking nut the hard alloy roll ring is held together with steel bushing reliably, and is simple in structure; The inwall design of steel bushing has keyway, avoided on the hard alloy roll ring, directly splining, thereby satisfy the requirement of stretch reducing milling train key transmission, and the rolling life-span improves greatly, roll change number of times and downtime have been reduced, reduced labour intensity, improved milling train production efficiency, and the surface quality of stocking is greatly improved; Effect is equal to the composite roll of external CIC and the production of metallurgical bond technology, and cost has only 1/tens, and cost performance is superior, and changes conveniently.
Description of drawings
Fig. 1 is the structural representation of the utility model stretch-reducing mill with the carbide alloy composite roll.
The specific embodiment
As shown in Figure 1, the utility model stretch-reducing mill comprises the steel bushing 1 of being with keyway with hard alloy roll, and hard alloy roll ring 2 is assemblied in the slight interference amount on the roundlet cylinder 1a of steel bushing 1, and its end face abuts against on the step surface 1b of steel bushing 1; One end of steel bushing 1 has also designed external screw thread, and locking nut 3 designs have the internal thread that matches with this external screw thread, adopt torque wrench to screw in and tighten nut, the hard alloy roll ring is held together with steel bushing reliably, and firm and reliable connection, demolition, installation are convenient; And can coat the screw thread solid glue that contracts in the part that is threaded further reinforces the connection.
Claims (1)
1, a kind of stretch-reducing mill carbide alloy composite roll, comprise the steel bushing (1) of being with keyway, be assemblied in that steel bushing roundlet cylinder (1a) is gone up and near the hard alloy roll ring (2) of steel bushing step surface (1b), the design of steel bushing (1) one end has external screw thread, and it is characterized in that: it also comprises a locking nut (3) that matches with the external screw thread of described steel bushing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050663 CN2772654Y (en) | 2005-03-31 | 2005-03-31 | Composite roller from hard alloy of tension reducing mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520050663 CN2772654Y (en) | 2005-03-31 | 2005-03-31 | Composite roller from hard alloy of tension reducing mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2772654Y true CN2772654Y (en) | 2006-04-19 |
Family
ID=36707908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520050663 Expired - Lifetime CN2772654Y (en) | 2005-03-31 | 2005-03-31 | Composite roller from hard alloy of tension reducing mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2772654Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531046A (en) * | 2013-05-30 | 2016-04-27 | 佩特有限公司 | Roller for hot rolling of wire rods and the like, and wire-rod and the like, hot-rolling machine provided with said roller |
| CN107900107A (en) * | 2017-11-20 | 2018-04-13 | 江苏环宇冶金科技有限公司 | A kind of non-stick steel collars |
| CN112620352A (en) * | 2020-11-30 | 2021-04-09 | 湖南三泰新材料股份有限公司 | High-chromium cast iron alloy composite roller |
| CN114737094A (en) * | 2022-04-14 | 2022-07-12 | 四川轻化工大学 | High-temperature wear-resistant corrosion-resistant metal ceramic material, composite roller and preparation method thereof |
-
2005
- 2005-03-31 CN CN 200520050663 patent/CN2772654Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105531046A (en) * | 2013-05-30 | 2016-04-27 | 佩特有限公司 | Roller for hot rolling of wire rods and the like, and wire-rod and the like, hot-rolling machine provided with said roller |
| CN107900107A (en) * | 2017-11-20 | 2018-04-13 | 江苏环宇冶金科技有限公司 | A kind of non-stick steel collars |
| CN112620352A (en) * | 2020-11-30 | 2021-04-09 | 湖南三泰新材料股份有限公司 | High-chromium cast iron alloy composite roller |
| CN114737094A (en) * | 2022-04-14 | 2022-07-12 | 四川轻化工大学 | High-temperature wear-resistant corrosion-resistant metal ceramic material, composite roller and preparation method thereof |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150331 Granted publication date: 20060419 |