CN112605129B - Intermediate roll of six-roll mill - Google Patents
Intermediate roll of six-roll mill Download PDFInfo
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- CN112605129B CN112605129B CN202011321532.7A CN202011321532A CN112605129B CN 112605129 B CN112605129 B CN 112605129B CN 202011321532 A CN202011321532 A CN 202011321532A CN 112605129 B CN112605129 B CN 112605129B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends
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Abstract
The invention discloses a six-roller mill intermediate roller, which comprises a roller body in the middle and roller necks at two ends, wherein the roller body is an effective roller body section, and the left end and the right end of the effective roller body section are respectively provided with a small roller body left section and a small roller body right section; the diameter of the left section of the small roll body is equal to the diameter of the right section of the small roll body and smaller than the diameter of the effective roll body section, and the length of the left section of the small roll body is equal to the length of the right section of the small roll body and equal to half of the difference between the length of the roll body and the length of the effective roll body. Compared with the prior art, the invention can solve the problems of unreasonable intermediate roll shape, poor control stability of the rolled plate and poor plate surface quality of the strip steel plate of the existing six-roll mill.
Description
Technical Field
The invention relates to the technical field of manufacturing of strip steel cold rolling equipment, in particular to a six-roller mill intermediate roller for cold rolling strip steel.
Background
The middle roll of the existing six-roll mill for cold-rolled strip steel comprises a roll body in the middle and roll necks at two ends, wherein the roll body is provided with an upper roll gap and a lower roll gap which are symmetrically arranged and have S-shaped curves. When the roll gap shape changing device is used, the roll gap shape can be continuously changed by moving the rolls in an opposite symmetry mode. However, the adjusting range of the roll gap shape decreases quadratically along with the reduction of the width of the strip steel, which is not beneficial to the shape control of the narrower strip steel of the ultra-wide rolling mill. When the ultra-wide rolling mill produces narrower strip steel, the problems that the control stability of the plate shape of the rolling mill is poor, the difference between the roughness attenuation speed of the edge part of the strip steel and the attenuation speed of the middle part of the strip steel is large, the quality of the plate surface of the strip steel plate is finally influenced, and the like exist.
Disclosure of Invention
The invention aims to solve the problem that the intermediate roll of the six-roll mill is unreasonable in roll shape and poor in control stability of a rolled plate, so that the plate surface quality of a steel plate of a strip steel is poor.
In order to solve the problems, the technical scheme of the invention is as follows: the intermediate roll of the six-roll mill comprises a middle roll body and roll necks at two ends, wherein the roll body is an effective roll body section, and the left end and the right end of the effective roll body section are respectively provided with a small roll body left section and a small roll body right section; the diameter of the left section of the small roller body is equal to that of the right section of the small roller body and smaller than that of the effective roller body section, and the length of the left section of the small roller body is equal to that of the right section of the small roller body, smaller than that of the effective roller body section and equal to half of the difference between the length of the roller body and the length of the effective roller body section;
the roller body is obtained by processing the following steps: the roll body grinds to the roll shape tolerance through the special cylindrical grinder of roll, according to roll shape design requirement, grinds down roll body both ends radius through the grinding machine effective roll body section with little roll body left side or little roll body right side section diameter half poor, measures the actual value of effective roll body section with little roll body left side or little roll body right side section diameter difference, if be less than its theoretical value, then right little roll body left side section with little roll body right side section carries out the coping and reaches the theoretical value.
In the above technical solution, a more specific solution may be: the diameter of the effective roll body ranges from 620 mm to 700 mm.
Further: the diameters of the left section of the small roller body and the right section of the small roller body are 4 mm smaller than the diameter of the effective roller body.
And further: the length of the effective roller body section is 1600 mm.
And further: the length of the left section of the small roller body and the length of the right section of the small roller body are both 425 millimeters.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the intermediate roll of the six-roll mill adopts the sectional design of the roll body, and the diameter of the small roll body section is smaller than the step-type large and small roll bodies of the effective roll body section, so that the intermediate roll can better control the plate shape without moving the roll to splice a symmetrical step-type in the rolling process of an upper mill, the plate shape control capability of the mill is obviously improved, the difference between the roughness attenuation speed of the edge part of the plate surface and the attenuation speed of the middle part of strip steel is improved to a certain extent, and the surface quality and the plate shape of the steel plate of the rolled strip are both improved.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
the labels in the figure are: the roller comprises an effective roller body section 1, a small roller body left section 2, a small roller body right section 3, a left roller neck 4 and a right roller neck 5.
Detailed Description
The embodiments of the invention will be further described in detail below with reference to the following drawings:
the intermediate roll of the six-roll mill shown in fig. 1 comprises a roll body in the middle and roll necks at two ends, wherein the left end is a left roll neck 4, the right section is a right roll neck 5, the roll body is an effective roll body section 1, and a small roll body left section 2 and a small roll body right section 3 are respectively arranged at the left end and the right end of the effective roll body section 1. The diameter D1 of effective roll shaft section is the same with roll shaft diameter D among the prior art, and D1= D, and D1 is 620 millimeters, and the length L1 of effective roll shaft section is 1600 millimeters. The diameter D2 of the small roll body left section 2 is equal to the diameter D3 of the small roll body right section 3 and is smaller than the diameter D1 of the effective roll body section, D2= D3= D1-h, h is the difference between the diameter of the effective roll body section and the diameter of the small roll body left section or the diameter of the small roll body right section, h =4 mm, the length L2 of the small roll body left section 2 is equal to the length L3 of the small roll body right section 3 and is equal to half of the difference between the length L of the roll body and the length L1 of the effective roll body section 1, namely L2= L3= (L-L1)/2 = (2450 mm-1600 mm)/2 =425 mm.
The roller body is processed according to the following steps: the roll body is ground to roll shape tolerance through a special cylindrical grinding machine for the roll, then according to roll shape design requirements, the radius of two ends of the roll body is ground by the grinding machine to half of the diameter difference between an effective roll body section 1 and a small roll body left section 2 or a small roll body right section 2, namely h/2, namely 2 mm, the actual value of the diameter difference between the effective roll body section 1 and the small roll body left section 2 or the small roll body right section 3 is measured, and if the actual value is smaller than the theoretical value of 2 mm, the small roll body left section 2 and the small roll body right section 3 are ground to reach the theoretical value of 2 mm.
In other embodiments, the diameter D1 of the effective roll body segment may also be any value between 620 mm and 700 mm, depending on different operating conditions.
The intermediate roll of the six-roll mill adopts the sectional design of the roll body, and the diameter of the small roll body section is smaller than the step-type large and small roll bodies of the effective roll body section, so that the intermediate roll can better control the plate shape without moving the roll to splice a symmetrical step-type in the rolling process of an upper mill, the plate shape control capability of the mill is obviously improved, the difference between the roughness attenuation speed of the edge part of the plate surface and the attenuation speed of the middle part of strip steel is improved to a certain extent, and the surface quality and the plate shape of the steel plate of the rolled strip are both improved.
Claims (1)
1. The utility model provides a six high rolling mill intermediate roll, includes the roll body in the middle of and the roll neck at both ends, its characterized in that: the roller body is an effective roller body section, and the left end and the right end of the effective roller body section are respectively provided with a small roller body left section and a small roller body right section;
the diameter of the left section of the small roll body is equal to the diameter of the right section of the small roll body and is smaller than the diameter of the effective roll body section, and the length of the left section of the small roll body is equal to the length of the right section of the small roll body, is smaller than the length of the effective roll body section and is equal to half of the difference between the length of the roll body and the length of the effective roll body section;
the diameter of the effective roller body ranges from 620 mm to 700 mm;
the diameters of the left section of the small roller body and the right section of the small roller body are 4 mm smaller than the diameter of the effective roller body;
the length of the effective roller body section is 1600 mm;
the lengths of the left section of the small roller body and the right section of the small roller body are both 425 mm;
the roller body is processed according to the following steps: the roll body is ground to roll shape tolerance through a special cylindrical grinder for the roll, then according to roll shape design requirements, the radius of two ends of the roll body is ground by the grinder to be half of the diameter difference between the effective roll body section and the left section of the small roll body or the right section of the small roll body, the actual value of the diameter difference between the effective roll body section and the left section of the small roll body or the right section of the small roll body is measured, and if the actual value is smaller than the theoretical value, the left section of the small roll body and the right section of the small roll body are ground to reach the theoretical value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011321532.7A CN112605129B (en) | 2020-11-23 | 2020-11-23 | Intermediate roll of six-roll mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011321532.7A CN112605129B (en) | 2020-11-23 | 2020-11-23 | Intermediate roll of six-roll mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112605129A CN112605129A (en) | 2021-04-06 |
| CN112605129B true CN112605129B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011321532.7A Active CN112605129B (en) | 2020-11-23 | 2020-11-23 | Intermediate roll of six-roll mill |
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| Country | Link |
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| CN (1) | CN112605129B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2261895Y (en) * | 1995-04-27 | 1997-09-10 | 鞍山钢铁公司 | Stepped support roll for cold mill |
| JP4379647B2 (en) * | 1999-06-29 | 2009-12-09 | 株式会社Ｉｈｉ | Rolling mill |
| CN201168720Y (en) * | 2008-03-27 | 2008-12-24 | 南京钢铁股份有限公司 | Stepped backing roll for steckel mill |
| CN101513705B (en) * | 2009-03-02 | 2010-06-16 | 常州艾柯轧辊有限公司 | Cold roller production process |
| CN102836878B (en) * | 2012-09-20 | 2014-07-02 | 北京科技大学 | Ultra-wide plate strip six-roll cold-rolling mill type |
| CN105032927B (en) * | 2015-07-23 | 2017-06-27 | 武汉钢铁(集团)公司 | The method of adjustment and six-roll cold mill of a kind of six-roll cold mill |
| CN205926601U (en) * | 2016-08-25 | 2017-02-08 | 山东钢铁股份有限公司 | Roller body of roll structure in middle of UCM rolling mill |
| CN210080350U (en) * | 2019-06-11 | 2020-02-18 | 山东新美达科技材料有限公司 | Six-roller cold rolling unit |
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2020
- 2020-11-23 CN CN202011321532.7A patent/CN112605129B/en active Active
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| CN112605129A (en) | 2021-04-06 |
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