CN103084397A - Method of manufacturing work roll by using waste intermediate roll - Google Patents
Method of manufacturing work roll by using waste intermediate roll Download PDFInfo
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- CN103084397A CN103084397A CN2013100245057A CN201310024505A CN103084397A CN 103084397 A CN103084397 A CN 103084397A CN 2013100245057 A CN2013100245057 A CN 2013100245057A CN 201310024505 A CN201310024505 A CN 201310024505A CN 103084397 A CN103084397 A CN 103084397A
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- roll
- calender rolls
- intermediate calender
- useless
- working roll
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Abstract
The invention relates to a method of manufacturing a work roll by using a waste intermediate roll. An intermediate roll without cracks or with the crack depth being smaller than five millimeters is used as raw materials of the work roll, and then, machine work is conducted to the waste intermediate roll, so that the eccentricity of a roll body and a roll neck of the waster intermediate roll is smaller than 0.01 millimeter, heat treatment is conducted to the waste intermediate roll after the waste intermediate roll is machined, finish machining is conducted to the waste intermediate roll after the heat treatment is conducted to the waste intermediate roll, and the work roll is obtained after the finish machining. The method can not only achieve waste utilization, but also enable the cost of manufacturing the work roll to be very low.
Description
Technical field
The present invention relates to the useless intermediate calender rolls of a kind of use and make the method for working roll.
Background technology
Milling train of the prior art comprises backing roll and working roll, and be equipped with between backing roll and working roll a pair of can axially movable intermediate calender rolls.This kind milling train is traversing by intermediate calender rolls, to eliminate the harmful contact area between backing roll and working roll, to improve the control ability of milled sheet shape, is applicable to the rolling of any width band.Wherein, described working roll is to make the instrument that is rolled flow of metal, is also to consume maximum spare parts during steel rolling is produced; Intermediate calender rolls is on-stream to be increased because high thermal shock causes roller surface layer hardness, very easily produces and peels off and slight crack, and under normal conditions, the diameter dimension of intermediate calender rolls is greater than working roll.As mentioned above, working roll and intermediate calender rolls are all easily worn parts, so existing milling train adopts identical material to make working roll and intermediate calender rolls usually.Because the cost of working roll and intermediate calender rolls is relatively high, after damaging, it does not carry out increase and the wasting of resources that the twice laid meeting causes production cost, for this reason, No. 102618710A disclosed name of Chinese patent is called " will scrap the method that cold roll is changed system into qualified cold roll " proposition a solution.This patent adopts annealing process, cutting, modifier treatment and final heat treatment step will scrap roller and changes system into qualified roll, in annealing process wherein, need to scrap in the annealing furnace that cold roll is placed on 600 ℃ of left and right of furnace temperature, and it is cold to carry out stove after being incubated 13 hours again; And in the modifier treatment step, at first roller stock is put into the car type furnace of 400 ℃ of furnace temperature, and be heated to 890 ℃ of left and right, being incubated 10 hours, the rear water-cooled of then coming out of the stove is to 200-250 ℃; Also need this is placed on preheating in furnace temperature 350-960 ℃ car type furnace during final heat treatment, and be 12 hours preheating time, then utilizes the double frequency quenching press to quench, and its hardening heat is at 940-960 ℃, and also need tempering 90-120 hour after quenching, temperature is at 100-180 ℃.Thereby can find out, roller is made qualified cold roll although the method that this patent proposes can will be given up, the technical process relative complex that it adopts, and cost of manufacture is higher; Topmost problem is, roll is scrapped by two reasons, the one, after being worn, the roller footpath produced the convex-concave roll surface, the 2nd, crack on roller or convex-concave roll surface and crackle produce simultaneously, if if adopt the above-mentioned method roller that will give up to make qualified cold roll do not increase the diameter that blank will dwindle cold roll on useless roll surface, and roll diameter change can directly affect the milling train quality.
Summary of the invention
Task of the present invention is to provide the method that the useless intermediate calender rolls of a kind of use of utilizing the mode that changes useless intermediate calender rolls diameter to solve the high problem with affecting the roller quality of cost of manufacture is made working roll.
The method that the useless intermediate calender rolls of use proposed by the invention is made working roll comprises the following steps: at first utilize flawless or crack depth less than the intermediate calender rolls of the 5 millimeters raw material as working roll, then useless intermediate calender rolls is carried out machining, so that the body of roll of useless intermediate calender rolls and roll neck bias are less than 0.01 millimeter, useless intermediate calender rolls after cutting is carried out heat treated, utilize grinding machine to carry out fine finishining the useless intermediate calender rolls after heat treated again, be working roll after fine finishining.
After the cutting step of described useless intermediate calender rolls is completed, also comprise the step that again detects useless intermediate calender rolls crackle.
In the process of described heat treatment step, making the roll surface Shore D type hardness tester value of working roll is 93-95, and roll neck Shore D type hardness tester value is 40-45, and the quench-hardened case thickness that makes the working roll roll surface is between the 25-30 millimeter.
The method that the useless intermediate calender rolls of use proposed by the invention is made working roll only adopts and detects and cutting, and heat treatment and fine finishining process will be made working roll with the intermediate calender rolls that gives up, so this kind method not only can realize twice laid, and make the cost of changing system into working roll very low.
The specific embodiment:
When useless intermediate calender rolls after being removed on frame, at first detect and whether scrap thickness that intermediate calender rolls is worn less than 5 millimeters, whether also need detect simultaneously crackle on it less than 5 millimeters, if scrap thickness that intermediate calender rolls is worn and/or crackle all less than 5 millimeters, be useless intermediate calender rolls of the present invention.then useless intermediate calender rolls is carried out machining, so that the body of roll of useless intermediate calender rolls and roll neck bias are less than 0.01 millimeter, after the intermediate calender rolls cutting of giving up, can again detect useless intermediate calender rolls whether crackle is arranged, if do not have crackle the useless intermediate calender rolls after cutting can be carried out heat treated, and in the process of heat treatment step, heat treatment temperature can adopt known technology to heat, to solve the Shore D type hardness tester value of working roll, wherein the Shore D type hardness tester value of roll surface is 93-95, roll neck Shore D type hardness tester value is 40-45, and make the quench-hardened case thickness of working roll roll surface between the 25-30 millimeter, and then utilize grinding machine to carry out fine finishining the useless intermediate calender rolls after heat treated, be working roll after fine finishining.
Claims (3)
1. make the method for working roll with useless intermediate calender rolls, it is characterized in that comprising the following steps: at first utilize flawless or crack depth less than the intermediate calender rolls of the 5 millimeters raw material as working roll, then useless intermediate calender rolls is carried out machining, so that the body of roll of useless intermediate calender rolls and roll neck bias are less than 0.01 millimeter, useless intermediate calender rolls after cutting is carried out heat treated, utilize grinding machine to carry out fine finishining the useless intermediate calender rolls after heat treated again, be working roll after fine finishining.
2. method according to claim 1, is characterized in that: after the cutting step of described useless intermediate calender rolls is completed, also comprise the step that again detects useless intermediate calender rolls crackle.
3. method according to claim 1, it is characterized in that: in the process of described heat treatment step, making the roll surface Shore D type hardness tester value of working roll is 93-95, and roll neck Shore D type hardness tester value is 40-45, and the quench-hardened case thickness that makes the working roll roll surface is between the 25-30 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310024505.7A CN103084397B (en) | 2013-01-23 | 2013-01-23 | The method of working roll is made with useless intermediate calender rolls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310024505.7A CN103084397B (en) | 2013-01-23 | 2013-01-23 | The method of working roll is made with useless intermediate calender rolls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103084397A true CN103084397A (en) | 2013-05-08 |
| CN103084397B CN103084397B (en) | 2015-09-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310024505.7A Active CN103084397B (en) | 2013-01-23 | 2013-01-23 | The method of working roll is made with useless intermediate calender rolls |
Country Status (1)
| Country | Link |
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| CN (1) | CN103084397B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340123A (en) * | 2017-01-24 | 2018-07-31 | 宝山钢铁股份有限公司 | A kind of strip-mill strip backing roll scrap after method for remanufacturing |
| CN113547281A (en) * | 2021-07-06 | 2021-10-26 | 山西太钢不锈钢股份有限公司 | Method for repairing surface cracks of leveling roller and performing nondestructive testing |
| CN113853256A (en) * | 2019-05-23 | 2021-12-28 | 钢铁普蓝特克股份有限公司 | Rolling mill, rolling method, and method for operating work roll |
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|---|---|---|---|---|
| JPS55161509A (en) * | 1979-06-04 | 1980-12-16 | Nisshin Steel Co Ltd | Regenerating method for work roll |
| CN1095109A (en) * | 1993-05-08 | 1994-11-16 | 鞍山钢铁公司 | A kind of reforming technology of waste or old roll |
| RU2121897C1 (en) * | 1997-07-23 | 1998-11-20 | Ветер Владимир Владимирович | Method for repairing rolling rolls |
| CN1394703A (en) * | 2002-07-30 | 2003-02-05 | 太原钢铁(集团)有限公司 | Method for repairing cold roll |
| CN102397879A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Roll barrel crack controlling method of roughing working roll |
| CN102618710A (en) * | 2012-04-17 | 2012-08-01 | 本溪市溪钢工矿设备有限公司 | Method for reconstructing scrapped cold roll into qualified cold roll |
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2013
- 2013-01-23 CN CN201310024505.7A patent/CN103084397B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55161509A (en) * | 1979-06-04 | 1980-12-16 | Nisshin Steel Co Ltd | Regenerating method for work roll |
| CN1095109A (en) * | 1993-05-08 | 1994-11-16 | 鞍山钢铁公司 | A kind of reforming technology of waste or old roll |
| RU2121897C1 (en) * | 1997-07-23 | 1998-11-20 | Ветер Владимир Владимирович | Method for repairing rolling rolls |
| CN1394703A (en) * | 2002-07-30 | 2003-02-05 | 太原钢铁(集团)有限公司 | Method for repairing cold roll |
| CN102397879A (en) * | 2010-09-16 | 2012-04-04 | 鞍钢股份有限公司 | Roll barrel crack controlling method of roughing working roll |
| CN102618710A (en) * | 2012-04-17 | 2012-08-01 | 本溪市溪钢工矿设备有限公司 | Method for reconstructing scrapped cold roll into qualified cold roll |
Non-Patent Citations (1)
| Title |
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| 李世辉: "《宝钢1420冷轧中间辊改为工作辊的研究》", 《江苏冶金》, vol. 33, no. 5, 31 October 2005 (2005-10-31) * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340123A (en) * | 2017-01-24 | 2018-07-31 | 宝山钢铁股份有限公司 | A kind of strip-mill strip backing roll scrap after method for remanufacturing |
| CN108340123B (en) * | 2017-01-24 | 2020-11-17 | 宝山钢铁股份有限公司 | Remanufacturing method for scrapped supporting roll of plate and strip mill |
| CN113853256A (en) * | 2019-05-23 | 2021-12-28 | 钢铁普蓝特克股份有限公司 | Rolling mill, rolling method, and method for operating work roll |
| CN113853256B (en) * | 2019-05-23 | 2024-05-17 | 钢铁普蓝特克股份有限公司 | Rolling mill, rolling method and operating method of working roll |
| CN113547281A (en) * | 2021-07-06 | 2021-10-26 | 山西太钢不锈钢股份有限公司 | Method for repairing surface cracks of leveling roller and performing nondestructive testing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103084397B (en) | 2015-09-09 |
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Effective date of registration: 20181102 Address after: 117000 No. 16 Renmin Road, Pingshan District, Benxi, Liaoning Co-patentee after: Liaoning Hengtong Metallurgical Equipment Manufacturing Co., Ltd. Patentee after: Benxi Steel Plate Co., Ltd. Address before: 117000 No. 16 Renmin Road, Pingshan District, Benxi, Liaoning Patentee before: Benxi Steel Plate Co., Ltd. |
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| TR01 | Transfer of patent right |