CN104942011A - Surface maintenance method for high chrome roller - Google Patents
Surface maintenance method for high chrome roller Download PDFInfo
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- CN104942011A CN104942011A CN201510335494.3A CN201510335494A CN104942011A CN 104942011 A CN104942011 A CN 104942011A CN 201510335494 A CN201510335494 A CN 201510335494A CN 104942011 A CN104942011 A CN 104942011A
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- chromium steel
- high chromium
- cold roll
- steel cold
- high chrome
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Abstract
The invention discloses a surface maintenance method for a high chrome roller. The surface maintenance method includes the following steps: (1) surface spraying; (2) subsection rapid freezing; (3) physical impurity removing; (4) protection layer coating; (5) drying, wherein the surface of the high chrome roller is wrapped with a sponge and is pressurized to 1.3 MPa to 1.6 MPa for standing for 10 min to 20 min, the sponge is dismounted, the high chrome roller is dried through hot air, the temperature is maintained to range from 30 DEG C to 40 DEG C, and the drying time ranges from 20 min to 30 min. The surface maintenance method has the advantages that impurities gathered to the surface of the high chrome roller are effectively removed through the steps of surface spraying, subsection rapid freezing and physical impurity removing, the surface is coated with protection film formed by oleic acid and sewage ethyl alcohol, and finally the protection film is shaped through the sponge, so that the protection film is stably attracted to the surface of the high chrome roller, and reliable protection on the surface of the high chrome roller is provided on the premise that utilization of the high chrome roller is not influenced.
Description
Technical field
The present invention relates to the surface care of roll, particularly relate to the surface maintenance method of high chromium steel roller.
Background technology
High chrome be the end of the seventies-the main roll manufactory in Europe at the beginning of the eighties analyzes high chrome compounded cast iron Working roll technique characteristic comprehensive and use on the basis of practice, with reference to SKD-11 cold work die steel material characteristic, chrome content through experimental study exploitation is 8-14%, phosphorus content is 0.70-1.4%, and the cast steel roll plastics on new materials containing alloying elements such as molybdenum, nickel and appropriate vanadium.This roll material has excellent heat crack resistance and high anti-wear performance.The service life of high chrome rough rolling working roll improves more than 1 times than alloy cast steel roll, is not only conducive to reducing stocking cost, and more effectively improves the surface quality of band.Existing high chromium steel roller working environment is poor, and long-time use at high chrome surface aggregation impurity particle, can bring damage to high chromium steel roller and rolling stock when rolling, shortens the service life of high chromium steel roller, the quality of influence of rolled material.
Summary of the invention
The technical problem to be solved in the present invention is that existing high chromium steel roller does not have special maintaining process, cannot carry out effective cleaning and protection to high chrome surface, provides a kind of surface maintenance method of high chromium steel roller for this reason.
Technical scheme of the present invention is: the surface maintenance method of high chromium steel roller, it comprises the following steps: (1), surface spraying: sent into by high chromium steel cold roll in the airtight passage of long 5 ~ 7m, airtight passage inwall length direction is communicated with the high-pressure nozzle of the sprayed atomization aviation kerosine of equi-spaced apart distribution, the spacing of adjacent two high-pressure nozzles is 0.3 ~ 0.5m, the pace of high chromium steel cold roll is 2 ~ 4m/min, keeps pressure at 0.4 ~ 0.6MPa in airtight passage; (2), segmentation is anxious freezes: high chromium steel cold roll is sent in reach in freezer that to carry out segmentation freezing, and one section of cryogenic temperature is-6 ~-8 DEG C, and cooling time is 10 ~ 20min.Two sections of cryogenic temperatures are-8 ~-12 DEG C, and cooling time is 5 ~ 10min; (3), physics removal of impurities: high chromium steel cold roll is taken out and pats its surface gently, then with cotton wiping 3-5 time repeatedly; (4), armor coated: by the oleic acid of 70wt% and absolute ethyl alcohol 1:3 mixing by weight, and to be distilled into steam, high chromium steel roller to be statically placed in 10-20min in steam; (5), dry: by high chromium steel cold roll surface parcel sponge, leave standstill 10 ~ 20min to its surface-pressure to 1.3 ~ 1.6Mpa, unload sponge, by high chromium steel cold roll hot air dries, temperature maintains 30 ~ 40 DEG C, drying time 20 ~ 30min.
The invention has the beneficial effects as follows anxious to freeze through surface spraying, segmentation, the impurity of high chrome surface aggregation effectively removes by physics removal step; apply the diaphragm that one deck is made up of oleic acid and sewage ethanol again; finally with sponge, this layer of diaphragm is shaped; make it stable be adsorbed on high chromium steel roller surface, provide reliable protection to its surface not affecting under the prerequisite that high chromium steel roller uses.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1:(1), surface spraying: high chromium steel cold roll is sent in the airtight passage of long 5m, airtight passage inwall length direction is communicated with the high-pressure nozzle of the sprayed atomization aviation kerosine of equi-spaced apart distribution, the spacing of adjacent two high-pressure nozzles is 0.3m, the pace of high chromium steel cold roll is 2m/min, keeps pressure at 0.4MPa in airtight passage; (2), segmentation is anxious freezes: high chromium steel cold roll is sent in reach in freezer that to carry out segmentation freezing, and one section of cryogenic temperature is-6 DEG C, and cooling time is 10min.Two sections of cryogenic temperatures are-8 DEG C, and cooling time is 5min; (3), physics removal of impurities: high chromium steel cold roll is taken out and pats its surface gently, then with cotton wiping 3 times repeatedly; (4), armor coated: by the oleic acid of 70wt% and absolute ethyl alcohol 1:3 mixing by weight, and to be distilled into steam, high chromium steel roller to be statically placed in 10min in steam; (5), dry: by high chromium steel cold roll surface parcel sponge, leave standstill 10min to its surface-pressure to 1.3Mpa, unload sponge, by high chromium steel cold roll hot air dries, temperature maintains 30 DEG C, drying time 20min.
Embodiment 2:(1), surface spraying: high chromium steel cold roll is sent in the airtight passage of long 6m, airtight passage inwall length direction is communicated with the high-pressure nozzle of the sprayed atomization aviation kerosine of equi-spaced apart distribution, the spacing of adjacent two high-pressure nozzles is 0.4m, the pace of high chromium steel cold roll is 3m/min, keeps pressure at 0.5MPa in airtight passage; (2), segmentation is anxious freezes: high chromium steel cold roll is sent in reach in freezer that to carry out segmentation freezing, and one section of cryogenic temperature is-7 DEG C, and cooling time is 15min.Two sections of cryogenic temperatures are-10 DEG C, and cooling time is 8min; (3), physics removal of impurities: high chromium steel cold roll is taken out and pats its surface gently, then with cotton wiping 4 times repeatedly; (4), armor coated: by the oleic acid of 70wt% and absolute ethyl alcohol 1:3 mixing by weight, and to be distilled into steam, high chromium steel roller to be statically placed in 15min in steam; (5), dry: by high chromium steel cold roll surface parcel sponge, leave standstill 15min to its surface-pressure to 1.5Mpa, unload sponge, by high chromium steel cold roll hot air dries, temperature maintains 35 DEG C, drying time 25min.
Embodiment 3:(1), surface spraying: high chromium steel cold roll is sent in the airtight passage of long 7m, airtight passage inwall length direction is communicated with the high-pressure nozzle of the sprayed atomization aviation kerosine of equi-spaced apart distribution, the spacing of adjacent two high-pressure nozzles is 0.5m, the pace of high chromium steel cold roll is 4m/min, keeps pressure at 0.6MPa in airtight passage; (2), segmentation is anxious freezes: high chromium steel cold roll is sent in reach in freezer that to carry out segmentation freezing, and one section of cryogenic temperature is-8 DEG C, and cooling time is 20min.Two sections of cryogenic temperatures are-12 DEG C, and cooling time is 10min; (3), physics removal of impurities: high chromium steel cold roll is taken out and pats its surface gently, then with cotton wiping 5 times repeatedly; (4), armor coated: by the oleic acid of 70wt% and absolute ethyl alcohol 1:3 mixing by weight, and to be distilled into steam, high chromium steel roller to be statically placed in 20min in steam; (5), dry: by high chromium steel cold roll surface parcel sponge, leave standstill 20min to its surface-pressure to 1.6Mpa, unload sponge, by high chromium steel cold roll hot air dries, temperature maintains 40 DEG C, drying time 30min.
The present invention is first attached to body surface uniformly with the aero oil of atomization, the impurity of absorption body surface, it is important that this pressure wherein in passage maintains 0.4 ~ 0.6Mpa ten points, be beneficial to the expansion of the atomizer volume of aero oil, can stop for a long time near the body of roll, the body of roll advances with the constant airspeed of 2 ~ 4m/min, guarantees adhesion effect, carry out segmentation more suddenly to freeze, in the short period of time temperature is reduced in specific scope, aero oil is separated out at body surface quick solidification, the impurity of body surface has been isolated while aero oil is separated out, due to the temperature difference of aero oil and body surface, there is thermal shock phenomenon, and then make the aero oil being adsorbed with impurity be frozen into block, depart from the aero oil that the mechanical systems such as strike make body surface lump again, again with the aero oil that cotton removal body surface retains, then the diaphragm that one deck is made up of oleic acid and absolute ethyl alcohol is applied to body surface, prevent fine particle impurity absorption at body surface.Finally use sponge wrapping, certain pressure is applied to sponge, diaphragm is shaped and is wrapped in body surface uniformly; by lower temperature, the body of roll is dried; body surface is not caused any harm while guarantee cleaning effect, do not produce any secondary pollution, clean environment firendly.
Claims (1)
1. the surface maintenance method of high chromium steel roller, it is characterized in that it comprises the following steps: (1), surface spraying: sent into by high chromium steel cold roll in the airtight passage of long 5 ~ 7m, airtight passage inwall length direction is communicated with the high-pressure nozzle of the sprayed atomization aviation kerosine of equi-spaced apart distribution, the spacing of adjacent two high-pressure nozzles is 0.3 ~ 0.5m, the pace of high chromium steel cold roll is 2 ~ 4m/min, keeps pressure at 0.4 ~ 0.6MPa in airtight passage; (2), segmentation is anxious freezes: high chromium steel cold roll is sent in reach in freezer that to carry out segmentation freezing, and one section of cryogenic temperature is-6 ~-8 DEG C, and cooling time is 10 ~ 20min; Two sections of cryogenic temperatures are-8 ~-12 DEG C, and cooling time is 5 ~ 10min; (3), physics removal of impurities: high chromium steel cold roll is taken out and pats its surface gently, then with cotton wiping 3-5 time repeatedly; (4), armor coated: by the oleic acid of 70wt% and absolute ethyl alcohol 1:3 mixing by weight, and to be distilled into steam, high chromium steel roller to be statically placed in 10-20min in steam; (5), dry: by high chromium steel cold roll surface parcel sponge, leave standstill 10 ~ 20min to its surface-pressure to 1.3 ~ 1.6Mpa, unload sponge, by high chromium steel cold roll hot air dries, temperature maintains 30 ~ 40 DEG C, drying time 20 ~ 30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510335494.3A CN104942011B (en) | 2015-06-17 | 2015-06-17 | The surface maintenance method of high chromium steel cold roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510335494.3A CN104942011B (en) | 2015-06-17 | 2015-06-17 | The surface maintenance method of high chromium steel cold roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104942011A true CN104942011A (en) | 2015-09-30 |
| CN104942011B CN104942011B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510335494.3A Active CN104942011B (en) | 2015-06-17 | 2015-06-17 | The surface maintenance method of high chromium steel cold roll |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042537A (en) * | 2021-04-12 | 2021-06-29 | 内蒙古联晟新能源材料有限公司 | Protection method for roller surface at-35 ℃ to +30 ℃ environment temperature |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3928999A (en) * | 1975-02-27 | 1975-12-30 | Aluminum Co Of America | Process for treatment of coiled aluminum sheet |
| US4094707A (en) * | 1976-08-09 | 1978-06-13 | Mannesmann Aktiengesellschaft | Making withdrawal rollers for ingots |
| JPH04279206A (en) * | 1991-03-08 | 1992-10-05 | Kawasaki Steel Corp | Method for grinding small diameter roll for rolling mill |
| CN1553831A (en) * | 2001-10-19 | 2004-12-08 | ŵ����ҵ�ɷ�����˾ | Method for reconditioning rollers |
| CN200988048Y (en) * | 2006-12-19 | 2007-12-12 | 比亚迪股份有限公司 | Roller cleaning mechanism |
-
2015
- 2015-06-17 CN CN201510335494.3A patent/CN104942011B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3928999A (en) * | 1975-02-27 | 1975-12-30 | Aluminum Co Of America | Process for treatment of coiled aluminum sheet |
| US4094707A (en) * | 1976-08-09 | 1978-06-13 | Mannesmann Aktiengesellschaft | Making withdrawal rollers for ingots |
| JPH04279206A (en) * | 1991-03-08 | 1992-10-05 | Kawasaki Steel Corp | Method for grinding small diameter roll for rolling mill |
| CN1553831A (en) * | 2001-10-19 | 2004-12-08 | ŵ����ҵ�ɷ�����˾ | Method for reconditioning rollers |
| CN200988048Y (en) * | 2006-12-19 | 2007-12-12 | 比亚迪股份有限公司 | Roller cleaning mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042537A (en) * | 2021-04-12 | 2021-06-29 | 内蒙古联晟新能源材料有限公司 | Protection method for roller surface at-35 ℃ to +30 ℃ environment temperature |
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| Publication number | Publication date |
|---|---|
| CN104942011B (en) | 2016-09-28 |
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