CN105290725A - Method of preparing high-precision annular grinding mirror surface steel belt - Google Patents
Method of preparing high-precision annular grinding mirror surface steel belt Download PDFInfo
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- CN105290725A CN105290725A CN201510657261.5A CN201510657261A CN105290725A CN 105290725 A CN105290725 A CN 105290725A CN 201510657261 A CN201510657261 A CN 201510657261A CN 105290725 A CN105290725 A CN 105290725A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention discloses a method of preparing a high-precision annular grinding mirror surface steel belt. The method comprises the following steps of: selecting a steel belt material, to be specific, selecting the steel belt with the tensile strength of 900-1600N/mm<2> and the hardness of HV 300-450 as a master belt to be welded; performing seamless welding; leveling weld joints; carrying out preliminary grinding on the weld joints; and carrying out mirror surface grinding process, to be specific, grinding an annular steel belt rough blank subjected to preliminary grinding by using two rows of automatic grinders with multiple grinding heads till the surface roughness is below Ra 0.02 micrometers. The method has the beneficial effects that the strict selection of the steel belt material and the adoption of the seamless welding technology, the leveling technology, the preliminary grinding technology, the mirror surface grinding technology and other management and control processes cause the steel belt in a slobbering machine to have relatively high mechanical strength, extremely small errors at annular welding parts, relatively small surface roughness and relatively long service life and finally cause thin film products obtained by adopting a slobbering process to be relatively thin and have consistent color and luster and uniform thickness, and further, the quality defects of the original steel belt are overcome.
Description
Technical field
The present invention relates to salivation equipment steel belt technology field, be specifically related to a kind of method preparing high accuracy annular abrasion minute surface steel band.
Background technology
Polyimide film (PI), PVA film, try pregnant film, memory roll film etc. relates in the technique of casting method, steel band as device core parts is directly connected to the thickness of shaped article, uniformity, fissility, aberration and transparency etc., only has high-quality steel strip surface just can produce high performance film.
But current industry investigation shows, the steel band used in the equipment such as band casting machine, single lead screw ex truding briquetting machine is multimodal various, and the constraint of not clear and definite professional standard, causes the product quality produced uneven; To cause as: steel strip surface roughness is too high not easily peeling off or product color degree poor, whole piece steel band became uneven (main finger weld seam) causes continuously shaped electric thin or other products all not to reach conforming thickness, the mechanical performance of steel band is too low, cause the easy stretcher strain of steel band, the linearity of steel band and the bad meeting of flatness cause the phenomenon such as sideslip in the process run.For meeting the requirement of film Terminal Type client, for improving the quality of film product, steel band producer starts the research and development being devoted to precise polished steel band.
In the production of existing polishing minute surface steel band, be the common cold-rolling stainless steel roll bending directly adopting steel mill to produce mostly, multicomputer serialization mirror finish, reaches so-called " 8K minute surface " effect.But this glossing is not also suitable for annular mirror face steel band, the mirror surface accuracy of its surface accuracy and annular weld zone is difficult to control, and then easily causes product became uneven; Further, this glossing only plays the effect improving steel strip surface brightness, can not solve the complex art transmitting purposes minute surface steel band.
By finding the retrieval of existing document, application number be 201410394817.1 Chinese invention patent application disclose a kind of processing technology of ring steel belt, it makes steel band thinning by spinning is carried out in thick steel band welding again, thus obtains the ring steel belt of required girth.The method accurately can control the girth of ring steel belt, but can not produce width more than 1000MM, the steel band of girth more than more than 20 meters, does not also solve steel strip surface roughness problem (high accuracy minute surface) simultaneously.Therefore, ring steel belt disclosed in this application for a patent for invention is only applicable to common, conveying among a small circle and transmission industry.
Summary of the invention
The object of the invention is to the deficiency existed for above-mentioned prior art, a kind of method for the preparation of high accuracy annular abrasion minute surface steel band special in casting method technique is provided.The finished product minute surface ring steel belt that the present invention obtains is by the type selecting of harsh strip material, seamless welding technology, postwelding planarization technology, grinding minute surface technology and other management and control operation, make that the steel band mechanical strength in slobbering machine is higher, annular solder place error is minimum, surface roughness is less, longer service life, finally make the film product of casting method technique can thinner, color and luster is consistent, thickness is even, improves the deficiency of original steel band quality.Therefore, the high accuracy annular abrasion minute surface steel band that the present invention obtains can for transmission, conveying under special environment, the effects such as mould, is applicable to have the purposes such as serialization mould shape in the casting method technique of high requirement and combination process.
The object of the invention is to be achieved through the following technical solutions:
The present invention relates to a kind of method preparing high accuracy annular abrasion minute surface steel band, described method comprises the steps:
The type selecting of S1, strip material: select tensile strength to be 900 ~ 1600N/mm
2, hardness is HV300 ~ 450, unevenness is≤steel band of 5mm/2 rice is as master tape to be welded; The raw material place of production is multiplex is the nonstandard customization of Japanese steel mill;
S2, seamless welding: the port at master tape two ends is repaiied together, be placed on weld jig working region respectively, zero gap opposite joint; Weld at joint, form ring steel belt crude green body;
S3, weld seam flatten: by weld seam height lower leveling (roll-in or the mode of beaing remove the object that residual mechanical stresses reaches leveling), remove residual stress, make the flatness of commissure and master tape basically identical;
S4, weld seam preliminary grinding: carry out preliminary grinding to the ring steel belt crude green body after leveling, be just milled to compared with strip thickness, weld seam thickness control errors is in 0.02mm;
S5, grinding minute surface: adopt the ring steel belt crude green body after having the automatic grinding machine butt welded seam preliminary grinding of the many bistriques of two rows to carry out being ground to surface roughness to less than Ra0.02 μm.
Preferably, in described step S1, also comprise and the steel band selected is cut to predetermined width and the step of length, described cutting requires that linearity is in below 2mm/50 meter.
Preferably, in step S1, the thickness of described master tape to be welded is 0.5 ~ 1.2mm, and width is 200 ~ 2000mm, and length is 1 ~ 100m/ bar, flatness≤2mm/m
2, surface is without any cut, pinprick and blackspot.More preferably thickness is 0.8 ~ 1.2mm, and width is 200 ~ 1500mm.
Preferably, in step S2, the fluting both sides of described weld jig working region are respectively equipped with the pressing plate with air bag; The port at described master tape two ends is placed in the middle of the fluting of weld jig, and compresses with described pressing plate, and the pressure that now pressing plate is used is 4 ~ 6bar, and described pressing plate is 1.5 ~ 2.5mm near the distance of the side of master tape port and master tape port.
Preferably, in step S2, described welding selects welding current to be 25 ~ 40A, and welding gait of march controls at 15 ~ 20cm/min.
Preferably, in step S2, use TIG precision welding to pick and to weld at joint.What the present invention selected is tensile strength is 900 ~ 1600N/mm
2, hardness is HV300 ~ 450, unevenness is≤steel band of 5mm/2 rice, as: the cold rolling hard state stainless steel band (or the hard state stainless steel band after heat treatment) of Japanese import, the chemical trade mark can be stainless steel SUS301, SUS304, SUS316L or SUS630; Due to its mechanical performance with comparatively exceed 60% or more with the domestic steel band of material, make its welding quality far away higher than domestic steel band (superiority shows that post welding distortion amount is little, and the tensile strength of commissure is high).Realize high accuracy annular abrasion minute surface steel band certainly will require to realize seamless welding in this step, the present invention is found by a large amount of creative works, weld jig top board is 1.5 ~ 2.5mm near the distance of the side of master tape port and master tape port, the pressure used is 4 ~ 6bar, and steel band two-port can be made to realize zero gap opposite joint; Use PANASONIC TIG precision welding to pick to weld at joint, controls welding current is 25 ~ 40A, welds gait of march at 15 ~ 20cm/min, can realize real seamless welding.
Preferably, in step S3, described weld seam leveling is specially: use rigid planar hammer evenly to beat commissure, make the weld seam of slight convex-concave become smooth, also reach the object removing residual stress simultaneously.
Preferably, in step S4, described preliminary grinding is specially: adopt the steel sand sheet of 80# evenly and fast the ring steel belt crude green body after leveling ground one time, re-use the eccentric sander of 120#, evenly polish back and forth at welding region, until the weld seam of weld projection polishes to weld seam thickness control errors at (compared with strip thickness) in 0.02mm.
Preferably, in step S5, described grinding comprises: the ring steel belt crude green body 400# grinding stone after weld seam preliminary grinding adds water corase grind, re-uses 800# grinding stone and to add water fine grinding, finally spray lapping liquid to ring steel belt crude green body surface, adopt pure wool to take turns and grind; Described lapping liquid is every 10L water, add 500g grounds travel, 85% nitric acid of 0.5L, 0.5L finishing agent configuration and obtain.Mirror ultrafinish technique of the present invention is the key of obtained high accuracy annular abrasion minute surface steel band, the present invention, by having paid a large amount of creationary research to grinding technics, final finds to adopt two row's many bistriques autogenous mills to take turns grinding can reach high-precision requirement in conjunction with 400# grinding stone add water fine grinding and the particular abrasive liquid wool of corase grind, 800# grinding stone that add water on the basis of aforementioned postwelding leveling and weld seam preliminary grinding.
Preferably, in step S5, the rotating speed of described automatic grinding machine controls at 1200 ~ 1600 revs/min.
Preferably, also comprise after described step S5 sponge add water grinding, rinse step.
Compared with prior art, the present invention has following beneficial effect:
1, for high accuracy annular minute surface steel band itself:
1.1 ring steel belts, in high temperature and high pressure running, can not make steel band be out of shape easily, stretch, fray;
1.2 make annular minute surface steel strip surface without any " tangerine peel " phenomenon, bistrique trace;
1.3 make the roughness of annular minute surface steel band reach less than 0.02 μm, minimumly reach 0.008 μm (Ra value);
1.4 make the indeformable of ring steel belt weld and postwelding sag, and the control errors of its welding region is within 0.015mm.
2, for the field of application, the uniformity of product, uniformity and peeling effect is definitely improved.
3, for user, the global monopolization of European two companies is broken.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 be steel band to be welded cut schematic diagram;
Fig. 2 is the limit processed schematic diagram of steel band to be welded;
Fig. 3 is the structural representation of weld jig;
Fig. 4 is the effect schematic diagram of welding;
Fig. 5 is automatic grinding machine grinding process flow schematic diagram;
Wherein, 1, steel band shearing knife, 2, steel band, 3, steel band sander, 4, copper plate, 5, lower bearing bracket, 6, top board, 7, automatic welder(welding machine).
Detailed description of the invention:
Below in conjunction with embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make certain adjustments and improvements.These all belong to protection scope of the present invention.
For the ring steel belt of serialization mould shape purposes in casting method technique and combination process, the requirement of its Special use environment makes its performance have high requirement.
The present embodiment relates to a kind of method preparing high accuracy annular abrasion minute surface steel band being applicable to such use, and it comprises the steps:
Step 1, to select materials: the cold rolling hard state stainless steel band adopting Japanese import, the chemical trade mark can be stainless steel SUS301, SUS304, SUS316L or SUS630, and its tensile strength is at 900 ~ 1600N/mm
2, between hardness HV300 ~ 450, the requirement of specifying according to different applying working conditions or user decides its type selecting.
Specifically select materials as follows:
The relevant range of the customized annular minute surface steel band of zero adaptation:
The chemistry trade mark: stainless steel SUS301SUS304SUS316LSUS630
Thickness: between 0.2 ~ 1.2mm
Width: 2000mm or following
Length: between 1 ~ 100m/bar
Zero difference enumerating mechanical properties, in table 1:
Table 1
Zero identical point enumerating chemical property, in table 2:
Table 2
Zero steel band rank type selecting standard
Its chemical trade mark and mechanical performance classification is decided according to environment for use.
The choice criteria of zero steel band base-material
Master tape flatness≤2mm/m
2, surface just can as the master tape materials of annular minute surface steel band without any cut, pinprick and blackspot (impurity) phenomenon.
Step 2, cutting and limit processed
By the mode of " two one lines ", used by unnecessary width mechanical shear or other automated manner to cut out to remove, generally do not adopt the mode of cutting machine to carry out cutting, because this high-temperature machining mode, the mechanical performance of steel band edge and texture can be caused to change.The present invention is by " two one lines " method cutting steel band, most important reason is exactly the linearity that will control steel band, ensure that operating steel band just can not sideslip, require that linearity is in below 2mm/50 meter, cut schematic diagram as shown in Figure 1, use steel band shearing knife 1 " two one lines " method that steel band 2 is cut to default length and width.
After steel band edge cuts, needing edge rounding, as adopted steel band sander 3 by edge rounding, making the edge (Fig. 2) of unusual light, the object done like this reduces the breach of steel band in operation.
Step 3, welding
Ready-made preparation is needed before 3.1 welding.
First the two ends of a steel band are cut into 90 degree of right angles respectively, after reconditioning to impulse-free robustness the port at two ends to spelling, make to reach in " zero gap " spelling place, namely visually observe without obvious gap, or the clearance gauge test using 0.02MM thick, can be up to standard if can not fill at joint.
3.2 prepare weld jig (welding tooling).
The structural representation of weld jig of the present invention as shown in Figure 3, the two ends of a steel band 2 are placed in the middle of the slotted copper plate 4 of band on lower bearing bracket 5, two top boards 6 with air bag are adopted to compress, before compression, the distance of two ports adjusting top board 6 and steel band 2 is needed to be respectively between 1.5 to 2.5mm.Be applicable to weld jig of the present invention, just can its welding quality of effective guarantee;
3.3 prepare TIG bonding machine.
Select the automatic welder(welding machine) 7 of import, ensure the stable type of the starting the arc and electric current, finally the staight shank welding gun of welding is arranged on automatic walking trolley and debugs back and forth, the bosom of tungsten pin point is walked in the middle of the opposite joint of steel band.
TIG precision welding can be selected to pick (Panasonic, three societies, agree the brand such as ratio), require current stabilization (all will ensure to stablize the stability of its property indices when reaching 3A during the starting the arc)
3.4 welding.
Welding current is adjusted to 25 ~ 40A, and welding gait of march controls at 15 ~ 20cm/min, concrete electric current and speed of welding, is as the criterion according to result of the test before weldering.Need fixed current, speed, argon flow amount during real welding, need the width observing molten bath during welding, remain its uniformity.As shown in Figure 4, a very uniform metal line, width is consistent, and surface is in golden yellow or silvery white, and more main is exactly surperficial pore-free and pinprick phenomenon for welding effect and quality.
The leveling of step 4, postwelding and weld seam preliminary grinding
Steel band leveling (roll-in or the mode of beaing remove the object that residual mechanical stresses reaches leveling) after welding is started preliminary grinding by 4.1 later, first adopt the steel sand sheet of 80# evenly and grind one time fast, and then use the eccentric sander of 120#, evenly polish back and forth at welding region, until the weld seam of weld projection polishes and reaches uniformity.
4.2 inspections: the weld seam thickness control errors of preliminary polishing is at (compared with strip thickness) in 0.02mm.
Step 5, ring steel belt grind
5.1 prepare integral ring-shaped grinding by welding to be placed on automatic grinding machine with the ring steel belt of butt welded seam preliminary grinding.
The automatic grinding machine of 5.2 application claims is that (namely single 7 mills are one group to the many bistriques of two rows, totally two groups, grinding wheel diameter is ∮ 150MM), each bistrique can up-down adjustment, regulate the size of downforce during formal grinding according to the mechanical performance of thickness of strips and material, rotating speed controls at 1200 ~ 1600 revs/min.The present invention can not use the reason of too much bistrique to be, in order to avoid will go the quality problems of the indivedual bistrique of eliminating one by one after there is grinding flaw.
5.3 automatic grinding machine grinding technics processes are as shown in Figure 5:
Ring steel belt crude green body 400# grinding stone after weld seam preliminary grinding adds water corase grind, re-uses 800# grinding stone and to add water fine grinding, finally spray lapping liquid to ring steel belt crude green body surface, adopt pure wool to take turns and grind; Described lapping liquid is every 10L water, add 500g grounds travel, 85% nitric acid of 0.5L, 0.5L finishing agent configuration and obtain; Then sponge add water grinding, rinse.
In each processing polishing and grinding stage, need to repeat about four processes.
Step 6, final inspection
6.1 measuring means and instrument
6.1.1 calibrator
6.1.2 roughmeter
6.1.3 floating rule
6.1.4 subjective inspection
Through inspection, the final certified products performance that the present invention obtains is as follows:
Thickness error (compared with master tape): in ± 0.015mm;
Roughness Ra value is (according to user and working condition requirement) below 0.02 μm;
Whole band flatness is at≤1mm/m
2, smooth welded seam degree is at below 0.02MM;
Sense organ requires: without obvious aberration, cut, bistrique print, orange peel effect etc.
In sum, the present invention is by type selecting, seamless welding technology, weld seam preliminary grinding technology, the grinding minute surface technology of harsh strip material, make that the steel band mechanical strength in slobbering machine is higher, annular solder place error is minimum, surface roughness is less, longer service life, finally make the film product of casting method technique can thinner, color and luster is consistent, thickness is even, and then improves the deficiency of original steel band quality.It is to be noted, the type selecting of strip material of the present invention, seamless welding technology, weld seam leveling, weld seam preliminary grinding technology, grinding minute surface technology all linked with one another, complement each other, lacking wherein arbitrary link or arbitrary link technique not in place all causing cannot obtain high accuracy minute surface ring steel belt of the present invention.
High accuracy minute surface ring steel belt provided by the invention, has following a few dot characteristics:
1, the steel band of indication of the present invention refers to for effects such as transmission, conveying, moulds under special environment, is also annularity, is not the web-like steel band of arbitrarily seen various material on the market.
The steel band tool of the similar chemical trade mark that the more common steel mill of steel band mechanical performance that 2, the present invention selects produces is significantly improved.
3, the solder technology of welding involved in the present invention also non-general high request, the welding of application claims is after the thin steel band (0.2 ~ 1.0mm) of wide cut (1000mm or more) is welded into annular, the same with master tape thick, flat and performance is suitable.
4, the minute surface of the minute surface of the present invention also general high request of right and wrong, not only requires brightness, also has high surface roughness (roughness reaches less than 0.02 μm).
High accuracy minute surface ring steel belt provided by the invention is compared with existing common polishing winding: 1) change every precision, 2) product quality is improved, 3) can be used for transmission and conveying 4) can be applicable to fixed thick and shaping (as the serialization press system and salivate film industry) of more conglomerate.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. prepare a method for high accuracy annular abrasion minute surface steel band, it is characterized in that, described method comprises the steps:
The type selecting of S1, strip material: select tensile strength to be 900 ~ 1600N/mm
2, hardness is HV300 ~ 450, unevenness is≤steel band of 5mm/2 rice is as master tape to be welded;
S2, seamless welding: the port at master tape two ends is repaiied together, be placed on weld jig working region respectively, zero gap opposite joint; Weld at joint, form ring steel belt crude green body;
S3, weld seam flatten: by weld seam height lower flatten, remove residual stress, make the flatness of commissure and master tape basically identical;
S4, weld seam preliminary grinding: carry out preliminary grinding to the ring steel belt crude green body after leveling, be just milled to compared with strip thickness, weld seam thickness control errors is in 0.02mm;
S5, grinding minute surface: adopt the ring steel belt crude green body after having the automatic grinding machine butt welded seam preliminary grinding of the many bistriques of two rows to carry out being ground to surface roughness to less than Ra0.015 μm.
2. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, is characterized in that, in described step S1, also comprises and the steel band selected is cut to predetermined width and the step of length, and described cutting requires that linearity is in below 2mm/50 meter.
3. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1 and 2, is characterized in that, in step S1, the thickness of described master tape to be welded is 0.5 ~ 1.2mm, and width is 200 ~ 2000mm, and length is 1 ~ 100m/ bar, flatness≤2mm/m
2, surperficial no marking, pinprick and blackspot.
4. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, is characterized in that, in step S2, the fluting both sides of described weld jig working region are respectively equipped with the pressing plate with air bag; The port at described master tape two ends is placed in the middle of the fluting of weld jig, and compresses with described pressing plate, and described pressing plate is 1.5 ~ 2.5mm near the distance of the side of master tape port and master tape port.
5. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, is characterized in that, in step S2, described welding selects welding current to be 25 ~ 40A, and welding gait of march controls at 15 ~ 20cm/min.
6. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, is characterized in that, in step S2, is use TIG precision welding to pick to weld at joint.
7. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, it is characterized in that, in step S3, described weld seam leveling is specially: use rigid planar hammer evenly to beat commissure, make the weld seam of slight convex-concave become smooth, also reach the object removing residual stress simultaneously.
8. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, it is characterized in that, in step S4, described preliminary grinding is specially: adopt the steel sand sheet of 80# evenly and fast the ring steel belt crude green body after leveling ground one time, re-use the eccentric sander of 120#, evenly polish back and forth at welding region, until compared with strip thickness, weld seam thickness control errors is in 0.02mm.
9. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, it is characterized in that, in step S5, described grinding comprises: the ring steel belt crude green body 400# grinding stone after weld seam preliminary grinding adds water corase grind, re-use 800# grinding stone to add water fine grinding, finally spray lapping liquid to ring steel belt crude green body surface, adopt pure wool to take turns and grind; Described lapping liquid be every 10L water add 500g grounds travel, 85% nitric acid of 0.5L, 0.5L finishing agent configuration obtain.
10. the method preparing high accuracy annular abrasion minute surface steel band according to claim 1, is characterized in that, in step S5, the rotating speed of described automatic grinding machine controls at 1200 ~ 1600 revs/min; Also comprise after described step S5 sponge add water grinding, rinse step.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107243780A (en) * | 2017-04-27 | 2017-10-13 | 上海佑戈金属科技有限公司 | Prepare the mirror ultrafinish method of high reflectance, low surface roughness aluminium alloy plate |
| CN111045304A (en) * | 2018-10-15 | 2020-04-21 | 京瓷办公信息系统株式会社 | Drive transmission device, image forming apparatus, and method of manufacturing transmission belt |
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| 贺万华等: "不锈钢钢带的对接焊工艺及应急修补技术", 《焊接技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243780A (en) * | 2017-04-27 | 2017-10-13 | 上海佑戈金属科技有限公司 | Prepare the mirror ultrafinish method of high reflectance, low surface roughness aluminium alloy plate |
| CN111045304A (en) * | 2018-10-15 | 2020-04-21 | 京瓷办公信息系统株式会社 | Drive transmission device, image forming apparatus, and method of manufacturing transmission belt |
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| CN105290725B (en) | 2018-08-28 |
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