CN211613820U - Novel nickel-chromium-molybdenum nodular cast iron roller for rolling profile steel - Google Patents
Novel nickel-chromium-molybdenum nodular cast iron roller for rolling profile steel Download PDFInfo
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- CN211613820U CN211613820U CN201922453989.2U CN201922453989U CN211613820U CN 211613820 U CN211613820 U CN 211613820U CN 201922453989 U CN201922453989 U CN 201922453989U CN 211613820 U CN211613820 U CN 211613820U
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Abstract
The utility model relates to the technical field of rollers, in particular to a novel nickel-chromium-molybdenum nodular cast iron roller for rolling profile steel, which comprises a roller body, a bearing retainer and a transmission end; two ends of the roller body are respectively and fixedly connected through a bearing retainer, and one side of the bearing retainer is fixedly connected through a transmission end; a first hole groove, a second hole groove and a third hole groove are sequentially formed in the roller body from left to right along the length direction; the cross sections of the first hole groove and the third hole groove are open rectangular grooves, and the cross section of the second hole groove is W-shaped. This novel nickel chromium molybdenum nodular cast iron roll of rolling shaped steel, simple structure can show improvement roll surface hardness and tensile strength, reduces the emergence of hot crack phenomenon, improves the life of whole roll, the extensive popularization and use of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of the technique of roll and specifically relates to a novel nickel chromium molybdenum nodular cast iron roll of rolling shaped steel.
Background
Because shaped steel is a big system, and the specification is not of a uniform size, and the variety is various, and the rolling machine type is many: the rolling of large and medium-sized steel adopts a transverse train unit and a universal rolling unit, and the rolling of medium and small-sized steel adopts a semi-continuous rolling unit and a continuous rolling unit, etc. The main characteristic of rolling the section steel is that all the rollers need to use relatively terylene holes. The rough rolling frame rolls the steel ingot into a blank, the rolling temperature is high, the rolling pressure is high, so that the roller needs to have higher strength and crack resistance, and meanwhile, the raw material has larger section size and more complex hole pattern, and the roller needs to have better biting property; the intermediate mill frame is used for further shaping the rolled piece and providing the rolled piece with a proper size for the finish rolling frame; the precision of the size of the section bar is ensured by the finishing mill frame, and the surface quality realizes the rolling with negative tolerance, so that the finishing roll has excellent wear resistance and certain heat cracking resistance.
At present, the roller used in the section steel rough and medium rolling mill, forged steel roller, is easy to produce heat crack due to low carbon content and poor wear resistance, the semi-cold-hard ball-milling iron roller has thick structure, poor hardness drop and poor wear resistance, and the wireless cold-hard ball-milling cast iron roller has the structure similar to that of the former because the hole pattern is deep and the chilling action in casting at the bottom of the hole pattern is weak when rolling larger-specification section steel.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the background technology, the novel nickel-chromium-molybdenum nodular cast iron roller for rolling profile steel is provided, has a simple structure, can obviously improve the surface hardness and tensile strength of the roller, reduces the occurrence of hot cracking, prolongs the service life of the whole roller, and is convenient to widely popularize and use.
The utility model provides a technical scheme that its technical problem adopted is: a novel nickel-chromium-molybdenum nodular cast iron roll for rolling profile steel comprises a roll body, a bearing retainer and a transmission end; two ends of the roller body are respectively and fixedly connected through a bearing retainer, and one side of the bearing retainer is fixedly connected through a transmission end; a first hole groove, a second hole groove and a third hole groove are sequentially formed in the roller body from left to right along the length direction; the cross sections of the first hole groove and the third hole groove are open rectangular grooves, and the cross section of the second hole groove is W-shaped.
Further, in the above technical solution, the depth of the first hole groove is greater than the depth of the third hole groove.
Further, in the above technical solution, the depth of the second hole and the groove is the same as the depth of the first hole and the groove.
Further, in the above technical solution, the distance between the first hole groove and the second hole groove is 30-50 mm.
Further, in the technical scheme, the distance between the second hole groove and the third hole groove is 30-50 mm.
Further limiting, in the technical scheme, the surface hardness of the roller body is 48-52 HSD, and the tensile strength of the roller body is more than or equal to 550 MPa.
Further limiting, in the above technical scheme, the hardness fall of the roller surface of the roller body and the groove bottoms of the first hole groove, the second hole groove and the third hole groove is less than or equal to 3 HSD.
The utility model has the advantages that: the utility model provides a novel nickel chromium molybdenum nodular cast iron roll of rolling shaped steel, simple structure can show improvement roll surface hardness and tensile strength, reduces the emergence of hot crack phenomenon, improves the life of whole roll, the extensive popularization and use of being convenient for.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
The reference numbers in the drawings are: 1. roll body, 2, bearing rail, 3, transmission end, 4, first hole groove, 5, second hole groove, 6, third hole groove.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the novel nickel-chromium-molybdenum nodular cast iron roll for rolling profile steel comprises a roll body 1, a bearing retainer 2 and a transmission end 3; two ends of the roller body 1 are fixedly connected through a bearing retainer 2 respectively, and one side of the bearing retainer 2 is fixedly connected through a transmission end 3; a first hole groove 4, a second hole groove 5 and a third hole groove 6 are sequentially arranged on the roller body 1 from left to right along the length direction; the first hole groove 4 and the third hole groove 6 are open rectangular grooves in cross section, and the second hole groove 5 is W-shaped in cross section.
Wherein the first bore recess 4 has a depth greater than the depth of the third bore recess 6. The second bore and groove 5 has the same depth as the first bore and groove 4. The distance between the first hole groove 4 and the second hole groove 5 is 30-50 mm. The distance between the second hole groove 5 and the third hole groove 6 is 30-50 mm. The surface hardness of the roller body 1 is 48-52 HSD, and the tensile strength of the roller body 1 is more than or equal to 550 MPa. The hardness fall of the roller surface of the roller body 1 and the groove bottoms of the first hole groove 4, the second hole groove 5 and the third hole groove 6 is less than or equal to 3 HSD.
This novel nickel chromium molybdenum nodular cast iron roll of rolling shaped steel all has following advantage for traditional roll: the structure is simple, the rolling efficiency is high, the surface hardness and the tensile strength of the roller can be obviously improved, the occurrence of the hot cracking phenomenon is reduced, the service life of the whole roller is prolonged, and the wide popularization and the use are convenient.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A novel nickel-chromium-molybdenum nodular cast iron roll for rolling profile steel is characterized by comprising a roll body, a bearing block and a transmission end; two ends of the roller body are respectively and fixedly connected through a bearing retainer, and one side of the bearing retainer is fixedly connected through a transmission end; a first hole groove, a second hole groove and a third hole groove are sequentially formed in the roller body from left to right along the length direction; the cross sections of the first hole groove and the third hole groove are open rectangular grooves, and the cross section of the second hole groove is W-shaped.
2. The novel nickel-chromium-molybdenum nodular cast iron roll for rolling section steel as claimed in claim 1, wherein: the depth of the first hole groove is larger than that of the third hole groove.
3. The novel nickel-chromium-molybdenum nodular cast iron roll for rolling section steel as claimed in claim 1, wherein: the depth of the second hole groove is the same as that of the first hole groove.
4. The novel nickel-chromium-molybdenum nodular cast iron roll for rolling section steel as claimed in claim 1, wherein: the distance between the first hole groove and the second hole groove is 30-50 mm.
5. The novel nickel-chromium-molybdenum nodular cast iron roll for rolling section steel as claimed in claim 1, wherein: the distance between the second hole groove and the third hole groove is 30-50 mm.
6. The novel nickel-chromium-molybdenum nodular cast iron roll for rolling section steel as claimed in claim 1, wherein: the surface hardness of the roller body is 48-52 HSD, and the tensile strength of the roller body is more than or equal to 550 MPa.
7. The novel nickel-chromium-molybdenum nodular cast iron roll for rolling section steel as claimed in claim 1, wherein: the hardness fall of the roller surface of the roller body and the groove bottoms of the first hole groove, the second hole groove and the third hole groove is less than or equal to 3 HSD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453989.2U CN211613820U (en) | 2019-12-30 | 2019-12-30 | Novel nickel-chromium-molybdenum nodular cast iron roller for rolling profile steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922453989.2U CN211613820U (en) | 2019-12-30 | 2019-12-30 | Novel nickel-chromium-molybdenum nodular cast iron roller for rolling profile steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211613820U true CN211613820U (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922453989.2U Active CN211613820U (en) | 2019-12-30 | 2019-12-30 | Novel nickel-chromium-molybdenum nodular cast iron roller for rolling profile steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211613820U (en) |
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2019
- 2019-12-30 CN CN201922453989.2U patent/CN211613820U/en active Active
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