CN110193515B - Rolling method of austenitic stainless steel hard plate - Google Patents
Rolling method of austenitic stainless steel hard plate Download PDFInfo
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- CN110193515B CN110193515B CN201910405547.2A CN201910405547A CN110193515B CN 110193515 B CN110193515 B CN 110193515B CN 201910405547 A CN201910405547 A CN 201910405547A CN 110193515 B CN110193515 B CN 110193515B
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- stainless steel
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- steel hard
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- 238000005096 rolling process Methods 0.000 title claims abstract description 115
- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 239000000839 emulsion Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000137 annealing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/026—Rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B2001/028—Slabs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/02—Austenitic rolling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to the technical field of steel rolling and discloses a rolling method of an austenitic stainless steel hard plate. The rolling method of the austenitic stainless steel hard plate comprises the following steps: carrying out rough rolling and finish rolling on the austenitic stainless steel hard plate for a plurality of passes by adopting a five-stand six-roller continuous rolling mill; controlling the total deformation of the austenitic stainless steel hard plate to be below 50%; controlling the rolling deformation corresponding to a first frame of a five-frame six-roller continuous rolling mill to be 60% of total deformation; and controlling the rolling deformation corresponding to the fifth frame of the five-frame six-roller continuous rolling mill to be 5% of the total deformation. The rolling method of the austenitic stainless steel hard plate utilizes the five-rack six-roller continuous rolling mill to roll the austenitic stainless steel hard plate, and simultaneously, the rolling deformation is controlled in the rolling process, so that the plate shape, the thickness precision, the surface quality and the yield of the austenitic stainless steel hard plate can be effectively improved, and the rolling cost is reduced.
Description
Technical Field
The invention relates to the technical field of steel rolling, in particular to a rolling method of an austenitic stainless steel hard plate.
Background
The traditional stainless steel cold-rolled strip steel is generally required to be subjected to an annealing process after being rolled so as to ensure the quality of the strip steel, and the austenitic stainless steel hard plate is not required to be subjected to the annealing process after being rolled, so that the austenitic stainless steel cold-rolled strip steel has higher strength and wider application range, but the austenitic stainless steel hard plate has higher requirements on plate shape and thickness precision during rolling. The prior austenitic stainless steel hard plate is usually rolled by a twenty-roller or eighteen-roller rolling mill, but because the working roller diameters of the twenty-roller and eighteen-roller rolling mill are small and the roller systems are complicated, the plate shape control is difficult when the austenitic stainless steel hard plate is rolled, the yield is low, and the rolling cost is greatly increased.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a rolling method of an austenitic stainless steel hard plate.
Therefore, the invention discloses a rolling method of an austenitic stainless steel hard plate. The rolling method comprises the following steps: carrying out rough rolling and finish rolling on the austenitic stainless steel hard plate for a plurality of passes by adopting a five-stand six-roller continuous rolling mill;
controlling the total deformation of the austenitic stainless steel hard state plate to be below 50%;
controlling the rolling deformation corresponding to a first frame of the five-frame six-roller continuous rolling mill to be 60% of the total deformation;
and controlling the rolling deformation corresponding to a fifth frame of the five-frame six-roller continuous rolling mill to be 5% of the total deformation.
Further, in the rolling method of the austenitic stainless steel hard sheet, the rolling method further includes: and when the austenitic stainless steel hard plate is rolled, controlling the deviation values of a first frame, a second frame and a third frame of the five-frame six-roller continuous rolling mill to be 0-0.1.
Further, in the rolling method of the austenitic stainless steel hard sheet, the rolling method further includes: and controlling the bias voltage values of the first rack, the second rack and the third rack to be 0-0.1.
Further, in the rolling method of the austenitic stainless steel hard sheet, the rolling method further includes: and setting a target curve of the five-stand six-roll continuous rolling mill according to the plate type of the austenitic stainless steel hard plate.
Further, in the rolling method of the austenitic stainless steel hard sheet, the rolling method further includes: and adjusting the levelness of an outlet strip steel compression roller of a fifth rack of the five-rack six-roller continuous rolling mill according to the plate type of the austenitic stainless steel hard plate so as to ensure that the two sides of the plate type of the austenitic stainless steel hard plate are symmetrical.
Further, in the rolling method of the austenitic stainless steel hard sheet, the rolling method further includes: the concentration of the emulsion for rolling is controlled to be 3-4%.
Further, in the rolling method of the austenitic stainless steel hard sheet, the rolling method further includes: and controlling the roughness of the roller of the five-frame six-roller continuous rolling mill to be 0.1-0.2 um.
The technical scheme of the invention has the following main advantages:
the rolling method of the austenitic stainless steel hard plate utilizes a five-rack six-roller continuous rolling mill to roll the austenitic stainless steel hard plate, and simultaneously controls the rolling deformation, the tension system of the racks, the plate shape target curve, the concentration of emulsion for rolling and the roughness of the roller in the rolling process, thereby effectively improving the plate shape and thickness precision, the surface quality and the yield of the austenitic stainless steel hard plate and reducing the rolling cost.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a rolling method of an austenitic stainless steel hard sheet according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.
The embodiment of the invention provides a rolling method of an austenitic stainless steel hard plate, which comprises the following steps: carrying out rough rolling and finish rolling on the austenitic stainless steel hard plate for a plurality of passes by adopting a five-stand six-roller continuous rolling mill;
controlling the total deformation of the austenitic stainless steel hard plate to be below 50%;
controlling the rolling deformation corresponding to a first frame of a five-frame six-roller continuous rolling mill to be 60% of total deformation;
and controlling the rolling deformation corresponding to the fifth frame of the five-frame six-roller continuous rolling mill to be 5% of the total deformation.
In the embodiment of the invention, the five-rack six-roller continuous rolling mill is adopted to roll the austenitic stainless steel hard plate, so that the plate shape precision, the finished product quality and the yield of the austenitic stainless steel hard plate can be effectively improved, and the rolling cost is reduced; meanwhile, the working roll diameter of the five-stand six-roll continuous rolling mill is larger, so that the total deformation of the austenitic stainless steel hard plate is controlled to be below 50% in the embodiment of the invention, and the application range of the five-stand six-roll continuous rolling mill can be effectively improved.
In the embodiment of the invention, the passes of rough rolling and finish rolling can be set according to actual conditions.
Further, in an embodiment of the present invention, the rolling method of the austenitic stainless steel hard state plate further includes: when rolling austenitic stainless steel hard plates, the deviation values of a first frame, a second frame and a third frame of a five-frame six-roller continuous rolling mill are controlled to be 0-0.1. By the arrangement, the same plate difference of a five-rack six-roller continuous rolling mill can be reduced, and the finished product quality of the austenitic stainless steel hard plate is improved. Preferably, the running deviation value of the first frame, the second frame and the third frame is controlled to be 0.
In the same way, in order to further reduce the same plate difference of the five-stand six-roller continuous rolling mill, the finished product quality of the austenitic stainless steel hard plate is improved; in an embodiment of the present invention, the rolling method of the austenitic stainless steel hard plate further includes: and controlling the bias voltage values of the first rack, the second rack and the third rack to be 0-0.1. Preferably, the bias values of the first, second and third racks are controlled to be 0.
Further, in an embodiment of the present invention, the rolling method of the austenitic stainless steel hard state plate further includes: the target curve of the five-stand six-roll continuous rolling mill is set according to the plate type of the austenitic stainless steel hard plate. Specifically, the target curves of the five-stand six-roll continuous rolling mill are set to arc plate type curves with different radians according to the plate type of the austenitic stainless steel hard plate so as to improve the rolling yield of the austenitic stainless steel hard plate.
Further, in an embodiment of the present invention, the rolling method of the austenitic stainless steel hard state plate further includes: and adjusting the levelness of the strip steel compression roller at the outlet of the fifth rack of the five-rack six-roller continuous rolling mill according to the plate type of the austenitic stainless steel hard plate so as to ensure that the two sides of the plate type of the austenitic stainless steel hard plate are symmetrical. Specifically, the actual plate shape of the austenitic stainless steel hard plate in the rolling process is observed, and the levelness of the outlet strip steel pressing roller of the fifth rack of the five-rack six-roller continuous rolling machine is finely adjusted according to the tightness degree of the two side edges of the austenitic stainless steel hard plate, so that the two side edges of the plate shape of the austenitic stainless steel hard plate are symmetrical, and the plate shape precision of the austenitic stainless steel hard plate is ensured to meet the actual requirement.
Further, in an embodiment of the present invention, the rolling method of the austenitic stainless steel hard state plate further includes: the concentration of the emulsion for rolling is controlled to be 3-4%. By the arrangement, the friction coefficient of a deformation area of the hard plate can be effectively reduced, the rolling pressure is reduced, and the surface quality and the finished product quality of the austenitic stainless steel hard plate are improved.
Further, in an embodiment of the present invention, the rolling method of the austenitic stainless steel hard state plate further includes: the roughness of the roller of the five-frame six-roller continuous rolling mill is controlled to be 0.1-0.2 um. By the arrangement, the friction coefficient of a deformation area of the hard plate can be effectively reduced, the rolling pressure is reduced, and the surface quality and the finished product quality of the austenitic stainless steel hard plate are improved.
Therefore, the rolling method of the austenitic stainless steel hard plate provided by the embodiment of the invention utilizes a five-stand six-roll continuous rolling mill to roll the austenitic stainless steel hard plate, and simultaneously controls the rolling deformation, the tension system of the stands, the plate shape target curve, the concentration of emulsion for rolling and the roughness of a roll in the rolling process, so that the plate shape, the thickness precision, the surface quality and the yield of the austenitic stainless steel hard plate can be effectively improved, and the rolling cost is reduced.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A rolling method of an austenitic stainless steel hard sheet, characterized in that the rolling method comprises:
carrying out rough rolling and finish rolling on the austenitic stainless steel hard plate for a plurality of passes by adopting a five-stand six-roller continuous rolling mill;
controlling the total deformation of the austenitic stainless steel hard state plate to be below 50%;
controlling the rolling deformation corresponding to a first frame of the five-frame six-roller continuous rolling mill to be 60% of the total deformation;
controlling the rolling deformation corresponding to a fifth frame of the five-frame six-roller continuous rolling mill to be 5% of the total deformation;
when the austenitic stainless steel hard plate is rolled, controlling the deviation values of a first frame, a second frame and a third frame of the five-frame six-roller continuous rolling mill to be 0-0.1 m;
and controlling the bias voltage values of the first rack, the second rack and the third rack to be 0-0.1 ton.
2. The method of rolling austenitic stainless steel hard sheet according to claim 1, further comprising: and setting a target curve of the five-stand six-roll continuous rolling mill according to the plate type of the austenitic stainless steel hard plate.
3. The method of rolling austenitic stainless steel hard sheet according to claim 2, further comprising: and adjusting the levelness of an outlet strip steel compression roller of a fifth rack of the five-rack six-roller continuous rolling mill according to the plate type of the austenitic stainless steel hard plate so as to ensure that the two sides of the plate type of the austenitic stainless steel hard plate are symmetrical.
4. The method of rolling austenitic stainless steel hard sheet according to claim 3, further comprising: and controlling the concentration of the emulsion for rolling to be 3% -4%.
5. The method of rolling austenitic stainless steel hard sheet according to claim 4, further comprising: and controlling the roughness of the roller of the five-frame six-roller continuous rolling mill to be 0.1-0.2 um.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910405547.2A CN110193515B (en) | 2019-05-16 | 2019-05-16 | Rolling method of austenitic stainless steel hard plate |
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| CN201910405547.2A CN110193515B (en) | 2019-05-16 | 2019-05-16 | Rolling method of austenitic stainless steel hard plate |
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| CN110193515A CN110193515A (en) | 2019-09-03 |
| CN110193515B true CN110193515B (en) | 2021-04-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60262922A (en) * | 1984-06-08 | 1985-12-26 | Nippon Steel Corp | Manufacture of ferrite stainless steel sheet superior in surface property and workability |
| CN102310088B (en) * | 2011-09-21 | 2013-08-07 | 上海宝立自动化工程有限公司 | Hot-rolled strip steel processing method of five-rack cold continuous rolling mill |
| CN103357670B (en) * | 2012-03-27 | 2015-06-03 | 上海梅山钢铁股份有限公司 | Reduction schedule optimizing method applicable to five-stand UCM (universal crown mill) type cold continuous rolling unit |
| CN103372575B (en) * | 2012-04-17 | 2015-06-24 | 上海梅山钢铁股份有限公司 | Pickling and rolling mill load distribution method |
| CN102671940B (en) * | 2012-05-23 | 2014-11-05 | 山西太钢不锈钢股份有限公司 | Rolling method for producing phase changes in finish rolling process of low-grade non-oriented silicon steel |
| CN103586279B (en) * | 2012-08-17 | 2015-12-02 | 宝山钢铁股份有限公司 | A kind of production method of cold-rolled plate for automobile friction sheets |
| CN102921743B (en) * | 2012-10-30 | 2015-06-24 | 中冶南方（武汉）信息技术工程有限公司 | Method for determining five stand tandem cold mill depressing distribution |
| CN104275350B (en) * | 2014-08-06 | 2016-08-24 | 振石集团东方特钢股份有限公司 | A kind of milling method of heat-resisting austenitic stainless steel |
| CN108856289A (en) * | 2018-06-01 | 2018-11-23 | 山西太钢不锈钢股份有限公司 | Middle chrome ferritic stainless steel cold rolled strip steel production method |
| CN108856305B (en) * | 2018-06-14 | 2020-07-07 | 武汉钢铁有限公司 | Load distribution method for non-oriented silicon steel production rolling mill |
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