CN104451502A - Film thickness control method for posttreatment of galvanized wire - Google Patents
Film thickness control method for posttreatment of galvanized wire Download PDFInfo
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- CN104451502A CN104451502A CN201410625992.7A CN201410625992A CN104451502A CN 104451502 A CN104451502 A CN 104451502A CN 201410625992 A CN201410625992 A CN 201410625992A CN 104451502 A CN104451502 A CN 104451502A
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Abstract
The invention relates to a film thickness control method for posttreatment of a galvanized wire. The method comprises the following steps: examining and adjusting a roller coater before input; setting process parameters of the roller coater before input; during normal production, adjusting the technical parameters; and quickly inputting and adjusting when rollers need to be replaced online as the coating rollers of the roller coater are abnormally abraded and damaged. In light of production practice and feedback information of a user, aiming at the characteristic of a 2# CGL chromate-free passivation and fingerprint-resistant product by virtue of long exploration, the operating process on control of film thickness and uniformity is boldly optimized, the operation process is normalized, and the accuracy on control of film thickness and uniformity is effectively enhanced, and particularly, quick, accurate and effective precision control on film thickness and uniformity of changing variety, changing specification and changing product line velocity is achieved.
Description
Technical field
The present invention relates to for controlling the accurate series of process control method of galvanizing line aftertreatment thicknesses of layers.
Background technology
Galvanized sheet surface aftertreatment thickness accurately controls for the surface quality of galvanizing production, use properties and dielectric dissipation impact very large.Thickness is on the low side, and galvanized sheet corrosion resistance nature may be caused to reduce, decrease white rust generation time, 2# line chromium-free deactivation and the product of resistance to fingerprint once produced a lot of quality objection because of white rust, loses very serious; The partially thick cost that will cause of rete increases, and also because of the blocked up generation passivation speckle of film and may solidify the product quality problems such as insufficient simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of galvanizing line aftertreatment thicknesses of layers control method, accurately control galvanizing line aftertreatment thicknesses of layers.Concrete technical scheme is as follows:
A kind of galvanizing line aftertreatment thicknesses of layers control method, comprises the steps:
(1) inspection and adjustment drop into front roller coating machine;
(2) set roller coating machine and drop into front processing parameter;
(3) technical arrangement plan during normal production; And/or,
(4) inordinate wear of roller coating machine coating roller and damage need the quick input adjustment operation of online roll change.
Further, specifically comprise the steps: in step (1)
(1-1) check that roller coating machine coating roller, feeding roller roll surface are without greasy dirt, breakage, projection and/or coagulum;
(1-2) check machinery, electric and pneumatics is without exception;
(1-3) maintaining roller footpath, coating roller roller footpath magnitude numerical value is close up and down; And/or,
(1-4) before roller coating machine running starts, crawl upper and lower coating roller and feeding roller check that whether moment of torsion is normal separately;
(1-5) in rotation the circular degree of the upper and lower coating roller of visual inspection whether evenly, with or without distortion.
Further, specifically comprise the steps: in step (2)
(2-1) initial speed is set: coating roller/feeding roller (120/40), pressure: 1.0;
(2-2) setting reaches the normal rear rotating speed of setup parameter: coating roller/feeding roller (120/40), pressure: 1.5;
(2-3) setting again reach the normal rear coating roller/feeding roller rotating speed of setup parameter not pressure changeable with 0.3 ~ 0.5 value increase successively, until to pressure set points required during normal production;
(2-4) coating roller/feeding roller rotating speed is risen to set(ting)value during normal production.
Further, specifically comprise the steps: in step (3)
(3-1), when roller coating machine initially drops into, the incision cornerite of lower coating roller is set as-10; And/or,
(3-2) the band steel incision cornerite of 0.3 ~ 0.8 is chosen as-16 ~-13, and the band steel incision cornerite of more than 0.8 selects-13 ~-10; And/or,
(3-3) normal produce in be the highest by 150 by the speed setting of coating roller; And/or,
(3-4), when the data fed back according to online wet film thickness ga(u)ge and the inspection of thickness model adjust rotating speed, pressure for reaching target value, pressure is not less than 1.5; And/or,
(3-5) production line changes specification when needing the data of speed change thickness fast sample inspection feedback not return, the demarcation numerical value correspondence+0.01mm of+0.1mm wet film thickness ga(u)ge between belt steel thickness (0.3 ~ 0.8), the demarcation numerical value correspondence+0.02mm of belt steel thickness more than 0.8+0.1mm wet film thickness ga(u)ge; And/or,
(3-6), during line speed change, the demarcation numerical value of same specification gauge strips steel wet film thickness ga(u)ge is constant, and the change according to the demarcation numerical value of wet film thickness ga(u)ge is suitably revised processing parameter.
Further, specifically comprise the steps: in step (4)
(4-1) start after the inordinate wear of roller coating machine coating roller and the online roll change of damage, start after roller coating machine roll change and namely reach required operating pressure in about 1 minute;
(4-2) after inputting roller coating machine input processing parameter, open COAT-STEP picture at HMI picture Mi l l drives mid point, select DS or OS chromate Pick-up rol l point to open;
(4-3) the FWD button in DS-OS JOG is clicked, chromate Pick-up rol l is marched forward, observe the position of chromate Pick-up rol l, stop when Pos position arrives between 1.0-0mm, now pressure should between 0.8-1.5kn;
(4-4) adjustment between the 1.0-0mm of Pos position is large near 1.0 with reference to roller footpath, concrete roller footpath, little then near 0;
(4-5) start roller coating machine, the pressure of roller coating machine arrives set(ting)value, and the fluctuation of DS-OS two side force difference is little within permissible value, at this moment just can drop into roller coating machine and normally produce.
Further, in step (1-3), upper and lower coating roller roller footpath is as differed, and the roller footpath of coating roller must be made to be less than lower coating roller roller footpath.
Further, in step (1-5), should change immediately if any distortion.
Further, in step (3-1), after roller coating machine has come into operation and rotating speed, pressure are normal, incision cornerite is strengthened gradually and has reached set(ting)value.
Further, in step (3-3), the speed discrepancy of feeding roller and coating roller is widened as far as possible.
Further, in step (4-4), pressure must not higher than 1.5kn.
Compared with currently available technology, the present invention according to production practice and field feedback through the long-term feature of groping for 2#CGL chromium-free deactivation and the product of resistance to fingerprint, bold optimization has been carried out to the operating procedure of thicknesses of layers and uniformity controlling, specification operating procedure, effectively improve the accuracy of thicknesses of layers and uniformity controlling, particularly to change kind, become specification and line speed changing film layer thickness and homogeneity and accurately control to have accomplished quick, accurate and effective.
Specifically: after taking above measure, chromium-free passivating film heavily controls:
Belt steel thickness < 1.2mm, film weighs 0.8 ~ 1.0g/m2 (one side), and target film weighs 0.8 ~ 0.85g/m2 (one side)
Belt steel thickness >=1.2mm, film weighs 1.0 ~ 1.2g/m2 (one side), and target film weighs 1.0 ~ 1.05g/m2 (one side)
Resistance to fingerprint: film weight: target value 1.2g/m2, scope 1.0 ~ 1.4g/m2.
Self-lubricating product:
1) conventional self-lubricating product: target value 1.35g/m2, scope 1.0 ~ 1.6g/m2.
2) IBM self-lubricating product: target value 1.25g/ ㎡, scope 1.2 ~ 1.3g/ ㎡.
Heavily control effects is well all in target range for film, and overall control and the uniformity effects of film weight are good.
Embodiment
Describe the present invention below, it is a kind of preferred embodiment in numerous embodiments of the present invention.
The present embodiment is divided into 4 parts according to operating process
1) inspection before roller coating machine input and adjustment.
2) roller coating machine drops into the setting of front processing parameter.
3) technical arrangement plan during normal production.
4) inordinate wear of roller coating machine coating roller and damage need the quick input adjustment operation of online roll change.
Wherein:
1) inspection before roller coating machine input and adjustment.
Roller coating machine coating roller, feeding roller roll surface are without greasy dirt, breakage, projection and coagulum.
Machinery, electrically and pneumatics without exception.
Upper and lower coating roller roller footpath is as answered maintaining roller footpath magnitude numerical value close without cause specific.Greatly reach target film thickness roller coating machine up-down rollers operation parameter must differ obvious as numerical values recited gap is crossed, pressure surge can be caused in process of production frequent, and film uniformity declines.
Upper and lower coating roller roller footpath, as differed, must make the roller footpath of coating roller be less than lower coating roller roller footpath.Because coating roller high and low position is different also different from the incision cornerite of band steel up and down, the effective cornerite of upper coating roller is greater than the effective cornerite of lower coating roller.For ensureing that band steel upper and lower surface thicknesses of layers and homogeneity unanimously descend coating roller roller footpath slightly larger than upper coating roller roller footpath, to make the effective cornerite of upper and lower coating roller close to increase the effective cornerite of lower coating roller.
Crawl upper and lower coating roller and feeding roller should check that whether moment of torsion was normal separately before roller coating machine running starts, and in rotation the upper and lower coating roller of visual inspection circular degree whether evenly, with or without distortion, prevent from production process, occurring anomalous effects thicknesses of layers and homogeneity if any changing immediately.
2) roller coating machine drops into the setting of front processing parameter.
The setting of the self-starting running processing parameter before roller coating machine puts into production should follow rotating speed from low to high, the ascending principle of pressure.The setting of the self-starting running processing parameter before roller coating machine puts into production is too high, can cause the stepper-motor of feeding roller at higher rotational speeds for the coating roller feeding roller roll gap pressure travel distance reaching setting is long, easily occur that the fluctuation of DS, OS pressure at both sides is larger and occur heel and toe wear.More obvious when particularly DS, OS both sides stepper-motor is advanced inconsistent, so that due to DS, OS pressure at both sides fluctuation considerable influence thicknesses of layers and homogeneity in production process.
The rotation direction of the coating roller of roller coating machine can be contrary with galvanized sheet, i.e. inverse painting; Also can be consistent with galvanized sheet, namely along being coated with.The good uniformity of inverse painting formula passivation, the film of resistance to finger prints processing, but larger to the wearing and tearing of roll surface.For ensureing that the homogeneity of thickness all adopts inverse painting formula as far as possible.
The setting of the self-starting running processing parameter before roller coating machine puts into production is correct effectively: initial-rotating speed: coating roller/feeding roller (120/40), pressure: 1.0; Reach setup parameter normal after-rotating speed: coating roller/feeding roller (120/40), pressure: 1.5, again reach the normal rear coating roller/feeding roller rotating speed of setup parameter not pressure changeable with 0.3 ~ 0.5 value increase successively, until to pressure set points required during normal production, at this moment coating roller/feeding roller rotating speed can be risen to set(ting)value during normal production.
3) technical arrangement plan during normal production.
The incision cornerite that roller coating machine initially drops into coating roller at present should be set as-10, produces impact and cause roller to be injured pressure surge causing thicknesses of layers and homogeneity to decline when contacting with the strip to prevent incision cornerite is excessive.Only have after roller coating machine has come into operation and rotating speed, pressure are normal, just incision cornerite can be strengthened gradually and reach set(ting)value.
The band steel incision cornerite of 0.3 ~ 0.8 should be chosen as-16 ~-13, and the band steel incision cornerite of more than 0.8 should select-13 ~-10.Deformation in thick is forbidden to use large incision cornerite, otherwise roller can be made to produce inordinate wear causes moment of torsion to strengthen, rotating speed and pressure surge obviously affect thicknesses of layers and homogeneity, roller coating machine even can be caused to jump film sound and produce and have no alternative but roll change, cause roller to consume increase, cost increase.
The rotating speed of coating roller is higher, and the larger membrane uniformity of speed discrepancy of coating roller/feeding roller is better.Should be the highest by 150 by the speed setting of coating roller in normal production, and widen the speed discrepancy of feeding roller and coating roller as far as possible.
When checking the data of feedback to adjust rotating speed, pressure for reaching target value according to online wet film thickness ga(u)ge and thickness model, for ensureing that thicknesses of layers and homogeneity must be followed: pressure regulation power never can turn speed; The principle that material roller rotating speed never adjusts coating roller rotating speed can be transferred.Facts have proved that this principle is very effective to the control of membrane uniformity, but pressure too lowly generally can not must not be forbidden lower than 1.2 lower than 1.5, otherwise can the class's of generation mark.
When the data that production line changes specification needs the fast sample inspection of speed change thickness to feed back do not return, for adjusting according to the data of online wet film thickness ga(u)ge when ensureing that quality product and target layer thickness and homogeneity are constant.The demarcation numerical value correspondence+0.01mm of+0.1mm wet film thickness ga(u)ge between general belt steel thickness (0.3 ~ 0.8), the demarcation numerical value correspondence+0.02mm of belt steel thickness more than 0.8+0.1mm wet film thickness ga(u)ge.This rule being I finds out through a large amount of Data Comparisons in production practice is relatively more accurate, but it should be noted that the original demarcation numerical value of wet film thickness ga(u)ge must be correct.
During line speed change, the demarcation numerical value of same specification gauge strips steel wet film thickness ga(u)ge is generally constant, and the change according to the demarcation numerical value of wet film thickness ga(u)ge is suitably revised processing parameter.
4) inordinate wear of roller coating machine coating roller and damage need the quick input adjustment operation of online roll change.
A, the roller inordinate wear of roller coating machine coating and start after damaging online roll change, if pressure needs a process overlong time will cause unit reduction of speed from 0 to service pressure time of setting, cause and close the band steel that volume increases particularly think gauge.Closing volume to save time decreased, starting after making roller coating machine roll change and namely reaching required operating pressure in about 1 minute, following principle must be accomplished.
After B, input roller coating machine drop into processing parameter, open COAT-STEP picture at HMI picture Mil l drives mid point, select DS or OS chromate Pick-up roll point to open.
C, the FWD button clicked in DS-OS JOG, chromate Pick-up roll is marched forward, observes the position of chromate Pick-up roll, stop when Pos position arrives between 1.0-0mm, now pressure should between 0.8-1.5kn.
Adjustment between the 1.0-0mm of D, Pos position is large near 1.0 with reference to roller footpath, concrete roller footpath, little then near 0.Key is that pressure must not higher than 1.5kn.
E, startup roller coating machine, the pressure of roller coating machine arrives set(ting)value very soon, and the fluctuation of DS-OS two side force difference is little within permissible value, at this moment just can drop into roller coating machine and normally produce.
Above to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed method of the present invention design and the various improvement carried out of technical scheme, or directly apply to other occasion, all within protection scope of the present invention without improvement.
Claims (10)
1. a galvanizing line aftertreatment thicknesses of layers control method, is characterized in that, comprise the steps:
(1) inspection and adjustment drop into front roller coating machine;
(2) set roller coating machine and drop into front processing parameter;
(3) technical arrangement plan during normal production; And/or,
(4) inordinate wear of roller coating machine coating roller and damage need the quick input adjustment operation of online roll change.
2. galvanizing line aftertreatment thicknesses of layers control method as claimed in claim 1, it is characterized in that, step specifically comprises the steps: in (1)
(1-1) check that roller coating machine coating roller, feeding roller roll surface are without greasy dirt, breakage, projection and/or coagulum;
(1-2) check machinery, electric and pneumatics is without exception;
(1-3) maintaining roller footpath, coating roller roller footpath magnitude numerical value is close up and down; And/or,
(1-4) before roller coating machine running starts, crawl upper and lower coating roller and feeding roller check that whether moment of torsion is normal separately;
(1-5) in rotation the circular degree of the upper and lower coating roller of visual inspection whether evenly, with or without distortion.
3. galvanizing line aftertreatment thicknesses of layers control method as claimed in claim 1 or 2, it is characterized in that, step specifically comprises the steps: in (2)
(2-1) initial speed is set: coating roller/feeding roller (120/40), pressure: 1.0;
(2-2) setting reaches the normal rear rotating speed of setup parameter: coating roller/feeding roller (120/40), pressure: 1.5;
(2-3) setting again reach the normal rear coating roller/feeding roller rotating speed of setup parameter not pressure changeable with 0.3 ~ 0.5 value increase successively, until to pressure set points required during normal production;
(2-4) coating roller/feeding roller rotating speed is risen to set(ting)value during normal production.
4. the galvanizing line aftertreatment thicknesses of layers control method according to any one of claim 1-3, it is characterized in that, step specifically comprises the steps: in (3)
(3-1), when roller coating machine initially drops into, the incision cornerite of lower coating roller is set as-10; And/or,
(3-2) the band steel incision cornerite of 0.3 ~ 0.8 is chosen as-16 ~-13, and the band steel incision cornerite of more than 0.8 selects-13 ~-10; And/or,
(3-3) normal produce in be the highest by 150 by the speed setting of coating roller; And/or,
(3-4), when the data fed back according to online wet film thickness ga(u)ge and the inspection of thickness model adjust rotating speed, pressure for reaching target value, pressure is not less than 1.5; And/or,
(3-5) production line changes specification when needing the data of speed change thickness fast sample inspection feedback not return, the demarcation numerical value correspondence+0.01mm of+0.1mm wet film thickness ga(u)ge between belt steel thickness (0.3 ~ 0.8), the demarcation numerical value correspondence+0.02mm of belt steel thickness more than 0.8+0.1mm wet film thickness ga(u)ge; And/or,
(3-6), during line speed change, the demarcation numerical value of same specification gauge strips steel wet film thickness ga(u)ge is constant, and the change according to the demarcation numerical value of wet film thickness ga(u)ge is suitably revised processing parameter.
5. the galvanizing line aftertreatment thicknesses of layers control method according to any one of claim 1-4, it is characterized in that, step specifically comprises the steps: in (4)
(4-1) start after the inordinate wear of roller coating machine coating roller and the online roll change of damage, start after roller coating machine roll change and namely reach required operating pressure in about 1 minute;
(4-2) after inputting roller coating machine input processing parameter, open COAT-STEP picture at HMI picture Mill drives mid point, select DS or OS chromate Pick-up roll point to open;
(4-3) click the FWD button in DS-OS JOG, chromate Pick-up roll is marched forward, observe the position of chromatePick-up roll, stop when Pos position arrives between 1.0-0mm, now pressure should between 0.8-1.5kn;
(4-4) adjustment between the 1.0-0mm of Pos position is large near 1.0 with reference to roller footpath, concrete roller footpath, little then near 0;
(4-5) start roller coating machine, the pressure of roller coating machine arrives set(ting)value, and the fluctuation of DS-OS two side force difference is little within permissible value, at this moment just can drop into roller coating machine and normally produce.
6. the galvanizing line aftertreatment thicknesses of layers control method according to any one of claim 1-5, is characterized in that, in step (1-3), upper and lower coating roller roller footpath is as differed, and the roller footpath of coating roller must be made to be less than lower coating roller roller footpath.
7. the galvanizing line aftertreatment thicknesses of layers control method according to any one of claim 1-6, is characterized in that, in step (1-5), should change immediately if any distortion.
8. the galvanizing line aftertreatment thicknesses of layers control method according to any one of claim 1-7, is characterized in that, in step (3-1), after roller coating machine has come into operation and rotating speed, pressure are normal, has been strengthened gradually by incision cornerite and reaches set(ting)value.
9. the galvanizing line aftertreatment thicknesses of layers control method according to any one of claim 1-8, is characterized in that, in step (3-3), widen the speed discrepancy of feeding roller and coating roller as far as possible.
10. galvanizing line aftertreatment thicknesses of layers control method as claimed in any one of claims 1-9 wherein, it is characterized in that, in step (4-4), pressure must not higher than 1.5kn.
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| CN105886990A (en) * | 2016-04-18 | 2016-08-24 | 法尔胜泓昇集团有限公司 | Control method and device for zinc coating thickness of steel wire |
| CN109913864A (en) * | 2019-04-18 | 2019-06-21 | 首钢京唐钢铁联合有限责任公司 | Control method for producing totally chromium-free passivated steel coil |
| CN112126938A (en) * | 2020-08-31 | 2020-12-25 | 首钢智新迁安电磁材料有限公司 | Method and device for controlling surface quality of strip steel |
| CN113680629A (en) * | 2021-07-30 | 2021-11-23 | 马鞍山钢铁股份有限公司 | Method for improving weight average uniformity of passive film on lower surface of strip steel of horizontal roller coater |
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| CN113680629A (en) * | 2021-07-30 | 2021-11-23 | 马鞍山钢铁股份有限公司 | Method for improving weight average uniformity of passive film on lower surface of strip steel of horizontal roller coater |
| CN113680629B (en) * | 2021-07-30 | 2023-03-03 | 马鞍山钢铁股份有限公司 | Method for improving weight average uniformity of passive film on lower surface of strip steel of horizontal roller coater |
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Application publication date: 20150325 |