CN106311750A - Pre-cutting and cutting hole type of mill - Google Patents
Pre-cutting and cutting hole type of mill Download PDFInfo
- Publication number
- CN106311750A CN106311750A CN201610790859.6A CN201610790859A CN106311750A CN 106311750 A CN106311750 A CN 106311750A CN 201610790859 A CN201610790859 A CN 201610790859A CN 106311750 A CN106311750 A CN 106311750A
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- Prior art keywords
- cutting
- hole
- millimeters
- forming
- holes
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/028—Variable-width rolls
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
- Milling Processes (AREA)
Abstract
The invention discloses a pre-cutting and cutting hole type of a mill. Pre-cutting holes comprise forming holes arranged side by side and connection holes used for connecting the forming holes; cutting holes comprise forming holes arranged side by side and connection holes used for connecting the forming holes. In the pre-cutting holes, the forming holes are round holes; one connection holes is arranged between two forming holes; the left side and the right side of each connection hole are fused with the forming holes on two sides; the upper edges and the lower edges of the connection holes are shaped as arcs with oppositely-arranged arc tops and are in smooth transition with the edges of the forming holes; and the ratio of spacing between the upper edges and the lower edges of the connection holes to the semi-diameter of the arcs is 3.56-3.67. In the cutting holes, the forming holes are round holes; one connection hole is arranged between two forming holes; the left side and the right side of each connection hole are fused with the forming holes on two sides; the upper edges and the lower edges of the connection holes are shaped as arcs with oppositely-arranged arc tops and are in smooth transition with the edges of the forming holes; and the ratio of centre-to-centre distance between the two forming holes to the arcs is 24.16-32.179.
Description
Technical field
The present invention relates to a kind of design of section of rolling mill.
Background technology
The rolling of rod type steel, by a steel billet through roughing mills, intermediate mill rolling, cuts rolled piece in mm finishing mill unit
It is divided into arranged side by side two piece or the rolled piece of more than two, referred to as splitting rolling.
Its concrete flow process is first by heating steel billet, then by different milling trains from be sliced in advance cutting gradually roll and
Become.In the existing operation of rolling, a large amount of finished products draw and crack when cutting and be judged to useless.Trace it to its cause, find and pre-cutting hole
And cutting hole be designed with much relations.
Summary of the invention
In view of this, the present invention provides a kind of pre-cutting of milling train and slitting pass, by the pre-cut between rod type steel
Divide the adjustment of band and cutting belt shape, it is to avoid crack when pre-cutting and cutting.
For solving above technical problem, the technical scheme is that a kind of pre-cutting of milling train and slitting pass, described pre-
Cutting sky includes the forming hole being arranged side by side and the connecting hole connecting forming hole；Described cutting hole includes the molding being arranged side by side
Hole and the connecting hole of connection molding sky；In described pre-cutting hole, forming hole is circular hole, connecting hole be arranged on two forming holes it
Between；Merging with both sides forming hole about described connecting hole, connecting hole lower edges is the circular arc that arc top is oppositely arranged, with molding
Bore edges seamlessly transits；The spacing of described connecting hole lower edges is 3.56-3.67 with the ratio of the radius of circular arc；Described cutting hole
In, forming hole is circular hole, and connecting hole is arranged between two forming holes；Merge with both sides forming hole about described connecting hole, even
Connecing hole lower edges is the circular arc that arc top is oppositely arranged, with forming hole edge-smoothing transition；The center of said two forming hole
It is 24.16-32.179 away from the ratio with the radius of circular arc.
Preferred as one, described pre-cutting bore dia is 21.74 millimeters, and the spacing of connecting hole lower edges is 13.34
Millimeter, the radius of circular arc is 3.63 millimeters.
Preferred as one, a diameter of 23 millimeters of described cutting hole, forming hole centre-to-centre spacing is 26.7 millimeters, the radius of circular arc
It it is 0.83 millimeter.
Preferred as one, described pre-cutting bore dia is 20.84 millimeters, and the spacing of connecting hole lower edges is 12.48
Millimeter, the radius of circular arc is 3.57 millimeters.
Preferred as one, a diameter of 21.23 millimeters of described cutting hole, forming hole centre-to-centre spacing is 24.5 millimeters, circular arc
Radius is 0.9 millimeter.
Preferred as one, described pre-cutting bore dia is 17.6 millimeters, and the spacing of connecting hole lower edges is 10.68 millis
Rice, the radius of circular arc is 3 millimeters.
Preferred as one, a diameter of 18.5 millimeters of described cutting hole, forming hole centre-to-centre spacing is 21.5 millimeters, the half of circular arc
Footpath is 0.89 millimeter.
The invention have benefit that: there is the pre-cutting hole of milling train and the cutting hole of said structure, adjust pre-cutting band
With the shape of cutting band, greatly reduce the generation of crackle when pre-cutting and cutting, improve yield rate, saved cost,
Improve economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of pre-cutting hole.
Fig. 2 is the structural representation of cutting hole.
Labelling in figure: 1 forming hole, 2 connecting holes.R is the radius of circular arc, and H is the spacing of connecting hole lower edges, and D is two
The centre-to-centre spacing of individual forming hole.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with detailed description of the invention
The present invention is described in further detail.
As shown in Figure 1 and Figure 2, pre-cutting sky of the present invention includes the forming hole 1 being arranged side by side and connects forming hole 1
Connecting hole 2；Described cutting hole includes the forming hole 1 being arranged side by side and connects the connecting hole 2 that molding is empty；Described pre-cutting hole
In, forming hole 1 is circular hole, and connecting hole 2 is arranged between two forming holes 1；Described connecting hole about 2 melts with both sides forming hole 1
Closing, connecting hole 2 lower edges is the circular arc that arc top is oppositely arranged, with forming hole 1 edge-smoothing transition；On described connecting hole 2
The spacing of lower limb is 3.56-3.67 with the ratio of the radius of circular arc；In described cutting hole, forming hole 1 is circular hole, and connecting hole 2 sets
Put between two forming holes 1；Described connecting hole about 2 merges with both sides forming hole 1, and connecting hole 2 lower edges is arc top phase
To the circular arc arranged, with forming hole 1 edge-smoothing transition；The ratio of the centre-to-centre spacing of said two forming hole 1 and the radius of circular arc
For 24.16-32.179.
Embodiment 1, described pre-cutting bore dia is 21.74 millimeters, and spacing H of connecting hole lower edges is 13.34 millimeters,
The radius R of circular arc is 3.63 millimeters, H:R=3.67.A diameter of 23 millimeters of described cutting hole, forming hole centre-to-centre spacing is 26.7 millis
Rice, the radius of circular arc is 0.83 millimeter, D:R=32.17.
Embodiment 2, described pre-cutting bore dia is 20.84 millimeters, and the spacing of connecting hole lower edges is 12.48 millimeters,
The radius of circular arc is 3.57 millimeters, H:R=3.57.A diameter of 21.23 millimeters of described cutting hole, forming hole centre-to-centre spacing is 24.5 millis
Rice, the radius of circular arc is 0.9 millimeter, D:R=27.22.
Embodiment 3, described pre-cutting bore dia is 17.6 millimeters, and the spacing of connecting hole lower edges is 10.68 millimeters, circle
The radius of arc is 3 millimeters, H:R=3.56.A diameter of 18.5 millimeters of described cutting hole, forming hole centre-to-centre spacing is 21.5 millimeters, circle
The radius of arc is 0.89 millimeter, H:R=24.16.
Add a point sword spacing by improved pre-cutting hole, reduce connecting hole circular arc radius.Rolled piece is through pre-
After cutting hole, the pre-cutting band of formation is not taken away more heat transfer by hole slot cooling water, improves the temperature at rolled piece pre-cutting band.In advance
Cutting band high temperature tears when entering next passes after being conducive to the tear of cutting band easily by pressing；Pre-cutting rolled piece enters and cuts
When dividing hole, stability is preferable, is conducive to adjusting control rolled piece two line poor, and two line finished sizes are evenly.
Reduced the centre-to-centre spacing of forming hole by improved cutting hole, add connecting hole circular arc radius.Make to cut
Point tear take away rolled piece center closer to, rolled piece tear-strap when entering next passes is easier to by pressing, cuts before and after optimization
Sub-material profile is amassed constant, and material type shape is become oval from the Fructus Persicae heart, when rolled piece enters next passes, cutting band easily overturn to
Processed pressing bottom groove；Cutting sword wearability is good, cutting sword be not easy abrasion or fall block, it is to avoid due to cutting sharpening damage or
Fall block and cause the finished product cracks of rolled piece cutting band generation lack of standardization.
When following table is the pass that 2013 do not use in the present invention, useless situation is sentenced by our factory.
After the pass using the present invention to provide, there is not cutting crackle.
Below it is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred implementation is not construed as
The restriction of the present invention, protection scope of the present invention should be as the criterion with claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, it is also possible to make some improvements and modifications, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (7)
1. the pre-cutting of milling train and a slitting pass, described pre-cutting sky includes the forming hole being arranged side by side and connects forming hole
Connecting hole；Described cutting hole includes the forming hole being arranged side by side and connects the connecting hole that molding is empty；It is characterized in that: described pre-
In cutting hole, forming hole is circular hole, and connecting hole is arranged between two forming holes；Melt with both sides forming hole about described connecting hole
Closing, connecting hole lower edges is the circular arc that arc top is oppositely arranged, with forming hole edge-smoothing transition；On described connecting hole below
The spacing of edge is 3.56-3.67 with the ratio of the radius of circular arc；In described cutting hole, forming hole is circular hole, and connecting hole is arranged on two
Between individual forming hole；Merging with both sides forming hole about described connecting hole, connecting hole lower edges is the circle that arc top is oppositely arranged
Arc, with forming hole edge-smoothing transition；The centre-to-centre spacing of said two forming hole is 24.16-with the ratio of the radius of circular arc
32.179。
A kind of pre-cutting of milling train the most according to claim 1 and slitting pass, it is characterised in that: described pre-cutting bore dia
Being 21.74 millimeters, the spacing of connecting hole lower edges is 13.34 millimeters, and the radius of circular arc is 3.63 millimeters.
A kind of pre-cutting of milling train the most according to claim 2 and slitting pass, it is characterised in that: described cutting hole is a diameter of
23 millimeters, forming hole centre-to-centre spacing is 26.7 millimeters, and the radius of circular arc is 0.83 millimeter.
A kind of pre-cutting of milling train the most according to claim 1 and slitting pass, it is characterised in that: described pre-cutting bore dia
Being 20.84 millimeters, the spacing of connecting hole lower edges is 12.48 millimeters, and the radius of circular arc is 3.57 millimeters.
A kind of pre-cutting of milling train the most according to claim 4 and slitting pass, it is characterised in that: described cutting hole is a diameter of
21.23 millimeters, forming hole centre-to-centre spacing is 24.5 millimeters, and the radius of circular arc is 0.9 millimeter.
A kind of pre-cutting of milling train the most according to claim 1 and slitting pass, it is characterised in that: described pre-cutting bore dia
Being 17.6 millimeters, the spacing of connecting hole lower edges is 10.68 millimeters, and the radius of circular arc is 3 millimeters.
A kind of pre-cutting of milling train the most according to claim 6 and slitting pass, it is characterised in that: described cutting hole is a diameter of
18.5 millimeters, forming hole centre-to-centre spacing is 21.5 millimeters, and the radius of circular arc is 0.89 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790859.6A CN106311750B (en) | 2016-08-31 | 2016-08-31 | The pre- cutting of milling train and slitting pass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610790859.6A CN106311750B (en) | 2016-08-31 | 2016-08-31 | The pre- cutting of milling train and slitting pass |
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| Publication Number | Publication Date |
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| CN106311750A true CN106311750A (en) | 2017-01-11 |
| CN106311750B CN106311750B (en) | 2019-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610790859.6A Active CN106311750B (en) | 2016-08-31 | 2016-08-31 | The pre- cutting of milling train and slitting pass |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671121A (en) * | 2017-09-29 | 2018-02-09 | 四川德胜集团钒钛有限公司 | A kind of rolling groove structure |
| CN109127725A (en) * | 2018-08-17 | 2019-01-04 | 石横特钢集团有限公司 | A kind of Round Steel Slit Rolling technique |
| CN112775194A (en) * | 2021-04-07 | 2021-05-11 | 江苏省镔鑫钢铁集团有限公司 | Preparation process and preparation device of multi-line splitting guide splitting rolled piece |
| CN113083885A (en) * | 2021-04-12 | 2021-07-09 | 首钢长治钢铁有限公司 | Joist steel material and production method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716602A (en) * | 1993-07-07 | 1995-01-20 | Kobe Steel Ltd | Method for rolling multi-slit |
| CN101306432A (en) * | 2007-05-18 | 2008-11-19 | 新疆八一钢铁股份有限公司 | Round steel splitting rolling technique |
| CN102814320A (en) * | 2011-06-10 | 2012-12-12 | 新疆八一钢铁股份有限公司 | Four-line splitting rolling technology for fai 12mm round steel |
| CN102989763A (en) * | 2012-11-26 | 2013-03-27 | 首钢总公司 | Production method of four-segment high-strength aseismic reinforcement |
| CN103706632A (en) * | 2013-12-20 | 2014-04-09 | 天津钢铁集团有限公司 | Slitting rolling method of 13mm deformed steel bar |
| CN103722008A (en) * | 2013-12-20 | 2014-04-16 | 天津钢铁集团有限公司 | Slitting rolling method for 19mm deformed steel bars |
-
2016
- 2016-08-31 CN CN201610790859.6A patent/CN106311750B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716602A (en) * | 1993-07-07 | 1995-01-20 | Kobe Steel Ltd | Method for rolling multi-slit |
| CN101306432A (en) * | 2007-05-18 | 2008-11-19 | 新疆八一钢铁股份有限公司 | Round steel splitting rolling technique |
| CN102814320A (en) * | 2011-06-10 | 2012-12-12 | 新疆八一钢铁股份有限公司 | Four-line splitting rolling technology for fai 12mm round steel |
| CN102989763A (en) * | 2012-11-26 | 2013-03-27 | 首钢总公司 | Production method of four-segment high-strength aseismic reinforcement |
| CN103706632A (en) * | 2013-12-20 | 2014-04-09 | 天津钢铁集团有限公司 | Slitting rolling method of 13mm deformed steel bar |
| CN103722008A (en) * | 2013-12-20 | 2014-04-16 | 天津钢铁集团有限公司 | Slitting rolling method for 19mm deformed steel bars |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671121A (en) * | 2017-09-29 | 2018-02-09 | 四川德胜集团钒钛有限公司 | A kind of rolling groove structure |
| CN109127725A (en) * | 2018-08-17 | 2019-01-04 | 石横特钢集团有限公司 | A kind of Round Steel Slit Rolling technique |
| CN112775194A (en) * | 2021-04-07 | 2021-05-11 | 江苏省镔鑫钢铁集团有限公司 | Preparation process and preparation device of multi-line splitting guide splitting rolled piece |
| CN113083885A (en) * | 2021-04-12 | 2021-07-09 | 首钢长治钢铁有限公司 | Joist steel material and production method thereof |
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| Publication number | Publication date |
|---|---|
| CN106311750B (en) | 2019-05-31 |
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