CN219188556U - Lengthened cold section for roller production - Google Patents
Lengthened cold section for roller production Download PDFInfo
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- CN219188556U CN219188556U CN202222867033.9U CN202222867033U CN219188556U CN 219188556 U CN219188556 U CN 219188556U CN 202222867033 U CN202222867033 U CN 202222867033U CN 219188556 U CN219188556 U CN 219188556U
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Abstract
The utility model discloses an extension cold mould for roll production, which comprises a cylindrical cold mould body with two open ends; the inner cavity of the cold type body has the same diameter, the outer wall is conical, and the thickness of the upper end wall is larger than that of the lower end wall; the inner wall of the cold type body is provided with a spiral line structure; a plurality of circles of exhaust rings are uniformly arranged on the cold-forming body along the axial direction of the cold-forming body, a plurality of exhaust through holes are uniformly arranged in each circle of exhaust rings along the circumferential direction of the cold-forming body, the exhaust through holes in two adjacent circles of exhaust rings are arranged in a staggered manner, and the cold-forming structure increases the adhesive force between a coated sand mold and the inner wall through the arrangement of a thread line structure on the inner wall; the heat preservation effect of the upper part of the roller body is improved by arranging the conical outer wall, and sequential solidification is realized; through setting up the exhaust through-hole and preventing that the sand mould from droing to discharge moisture and gas smoothly, improve the quality of roll.
Description
Technical Field
The utility model relates to the field of roll production, in particular to a lengthened cold mold for roll production.
Background
With the development of the times, various industries are developing in the directions of high, precise and sharp in the quality control of products. The quality of the roller as a necessary product of steel rolling directly influences the quality of steel products such as steel coils, section steel and the like. The cold mould is used as a basic mould for manufacturing the roller, and the performance of the mould directly determines the yield and quality of the roller. The conventional cold mold has the following problems:
first: the side wall of the lengthened section cold mold (the height is more than 600 MM) is sealed, and when a roller is poured, the environment water vapor which is sealed in a pure way cannot be discharged sufficiently, the sand mold is easy to fall off, and the head and the neck are easy to form air holes and sand inclusion; the gas, the water and the sand can reduce the using strength of the head and neck of the roller once entering the head and neck, if the area defect is caused, the roller is directly scrapped, and the loss is huge;
second,: the conventional lengthened cold type inner wall adopts a conventional processing method, namely the inner wall is a smooth surface; when a roller is manufactured, the inner wall is smooth in the lengthened section cold mould box matching process, the sand mould is easy to fall off, the box matching is failed, and finally normal casting cannot be finished;
third,: the lengthened cold mold, especially the cold mold with the height exceeding 800mm, has time difference in solidification time from top to bottom of the roller body when in pouring, and the solidification time of the upper part of the roller body is early, so that the final solidification area in the middle part of the roller body cannot be effectively fed, and the quality of the roller is affected.
Disclosure of Invention
The utility model aims to provide an extension cold mold for roll production.
The utility model aims at innovation points that: the adhesive force between the sand mold and the inner wall is increased by arranging a thread structure on the inner wall; the heat preservation effect of the upper part of the roller body is improved by arranging the conical outer wall, and sequential solidification is realized; through setting up the exhaust through-hole and preventing that the sand mould from droing to discharge moisture and gas smoothly, improve the quality of roll.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the lengthened cold mold for roll production comprises a cylindrical cold mold body with two open ends; the inner cavity of the cold type body has the same diameter, the outer wall is conical, and the thickness of the upper end wall is larger than that of the lower end wall; the inner wall of the cold type body is provided with a spiral line structure; the cold-type body is gone up and is evenly set up a plurality of rings of exhaust circles along cold-type body axial, evenly sets up a plurality of exhaust through-holes along cold-type body circumference in every ring of exhaust circle, exhaust through-hole dislocation set in the adjacent two rings of exhaust circles.
Further, the number of the exhaust rings 20 is 2-4.
Further, the diameter of the exhaust through hole 21 is 10-12mm, and the diameter of the exhaust through hole 21 cannot be too large, so that the strength of the cold-type body 10 is affected too much.
Further, the interval between the thread lines in the thread line structure 11 is 20-40mm.
Further, the height of the cold type body 10 is 600-800mm.
Further, the wall thickness of the cold-type body 10 is 200-300mm, and the inner diameter is 200-800mm.
The beneficial effects of the utility model are as follows:
first: the inner wall is provided with a thread structure, so that the friction force between molding sand and the inner wall can be increased, and the box matching is facilitated;
second,: the thickness of the upper end wall is larger than that of the lower end wall, so that the heat preservation effect of the upper part of the roller body can be improved, the solidification speed of the upper part is reduced, sequential solidification is realized, the internal defects of the roller are reduced, and the quality of the roller is improved;
third,: on one hand, part of molding sand can enter the exhaust through hole when being poured into the exhaust through hole to form a circle of sharp angles similar to a fixing device, so that the friction force between the molding sand and the inner wall is greatly increased, and the problem of falling of the molding sand is solved; on the other hand, moisture and gas can be discharged from the exhaust through hole during pouring, and because the pressure of the inner wall of the exhaust through hole can be effectively released, the situation of sand mould damage can not occur, and the influence of three factors of sand, moisture and gas on the quality of the roller in the pouring process is fundamentally solved.
Drawings
FIG. 1 is a cross-sectional view of the present utility model.
In the figure: the cold type body 10, the spiral line structure 11, the exhaust ring 20 and the exhaust through hole 21.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.
The lengthened cold mold for roll production comprises a cylindrical cold mold body 10 with two open ends; the inner cavity of the cold type body 10 has the same diameter, the outer wall is conical, and the thickness of the upper end wall is larger than that of the lower end wall; the inner wall of the cold-type body 10 is provided with a thread structure 11; the cold-type body 10 is provided with a plurality of circles of exhaust rings 20 along the axial direction of the cold-type body 10, a plurality of exhaust through holes 21 are uniformly formed in each circle of exhaust rings 20 along the circumferential direction of the cold-type body 10, and the exhaust through holes 21 in two adjacent circles of exhaust rings 20 are arranged in a staggered mode.
Further, the number of the exhaust rings 20 is 2-4.
Further, the diameter of the exhaust through hole 21 is 10-12mm, and the diameter of the exhaust through hole 21 cannot be too large, so that the strength of the cold-type body 10 is affected too much.
Further, the interval between the thread lines in the thread line structure 11 is 20-40mm.
Further, the height of the cold type body 10 is 600-800mm.
Further, the wall thickness of the cold-type body 10 is 200-300mm, and the inner diameter is 200-800mm.
Example 1
The cold type body 10 has a height of 600mm and an inner diameter of 300mm; 2 circles of exhaust rings 20 are axially arranged along the cold-type body 10, 6 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 10mm.
Example 2
The cold type body 10 has a height of 800mm and an inner diameter of 300mm; along the axial direction of the cold-type body 10, 3 circles of exhaust rings 20 are arranged, 6 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 10mm.
Example 3
The cold type body 10 has a height of 600mm and an inner diameter of 500mm; 2 circles of exhaust rings 20 are axially arranged along the cold-type body 10, 8 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 12mm.
Example 4
The cold type body 10 has a height of 800mm and an inner diameter of 500mm; along the axial direction of the cold-type body 10, 3 circles of exhaust rings 20 are arranged, 8 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 12mm.
Example 5
The cold type body 10 has a height of 600mm and an inner diameter of 700mm; 2 circles of exhaust rings 20 are axially arranged along the cold-type body 10, 12 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 12mm.
Example 6
The cold type body 10 has a height of 800mm and an inner diameter of 700mm; along the axial direction of the cold-type body 10, 3 circles of exhaust rings 20 are arranged, 12 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 12mm.
Example 7
The cold type body 10 has a height of 600mm and an inner diameter of 800mm; 2 circles of exhaust rings 20 are axially arranged along the cold-type body 10, 18 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 12mm.
Example 8
The cold type body 10 has a height of 800mm and an inner diameter of 800mm; along the axial direction of the cold-type body 10, 3 circles of exhaust rings 20 are arranged, 18 exhaust through holes 21 are formed in each circle of exhaust ring 20 along the circumferential direction of the cold-type body 10, and the aperture of each exhaust through hole 21 is 12mm.
The described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Claims (6)
1. Lengthened cold mold for roller production, which is characterized in that: comprises a cylindrical cold-type body (10) with two open ends; the inner cavity of the cold-type body (10) has the same diameter, the outer wall is conical, and the thickness of the upper end wall is larger than that of the lower end wall; the inner wall of the cold-type body (10) is provided with a thread structure (11); a plurality of circles of exhaust rings (20) are uniformly arranged on the cold-formed body (10) along the axial direction of the cold-formed body (10), a plurality of exhaust through holes (21) are uniformly arranged in each circle of exhaust rings (20) along the circumferential direction of the cold-formed body (10), and the exhaust through holes (21) in two adjacent circles of exhaust rings (20) are arranged in a staggered mode.
2. The extended length cold mold for roll production according to claim 1, wherein: the number of the exhaust rings (20) is 2-4.
3. The extended length cold mold for roll production according to claim 1, wherein: the diameter of the exhaust through hole (21) is 10-12mm.
4. The extended length cold mold for roll production according to claim 1, wherein: the interval between the thread lines in the thread line structure (11) is 20-40mm.
5. The extended length cold mold for roll production according to claim 1, wherein: the height of the cold-formed body (10) is 600-800mm.
6. The extended length cold mold for roll production according to claim 1, wherein: the wall thickness of the cold-type body (10) is 200-300mm, and the inner diameter is 200-800mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222867033.9U CN219188556U (en) | 2022-10-30 | 2022-10-30 | Lengthened cold section for roller production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222867033.9U CN219188556U (en) | 2022-10-30 | 2022-10-30 | Lengthened cold section for roller production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219188556U true CN219188556U (en) | 2023-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222867033.9U Active CN219188556U (en) | 2022-10-30 | 2022-10-30 | Lengthened cold section for roller production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219188556U (en) |
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2022
- 2022-10-30 CN CN202222867033.9U patent/CN219188556U/en active Active
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