CN114986260A - Method for grinding roller and mirror roller - Google Patents
Method for grinding roller and mirror roller Download PDFInfo
- Publication number
- CN114986260A CN114986260A CN202210586726.2A CN202210586726A CN114986260A CN 114986260 A CN114986260 A CN 114986260A CN 202210586726 A CN202210586726 A CN 202210586726A CN 114986260 A CN114986260 A CN 114986260A
- Authority
- CN
- China
- Prior art keywords
- grinding
- roller
- roll
- wheel
- mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000227 grinding Methods 0.000 title claims abstract description 217
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000005498 polishing Methods 0.000 claims abstract description 22
- 230000003746 surface roughness Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 66
- 239000011347 resin Substances 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 238000012216 screening Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 11
- 229910052593 corundum Inorganic materials 0.000 claims description 11
- 239000010431 corundum Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 238000003801 milling Methods 0.000 claims description 6
- 239000003082 abrasive agent Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 229910001651 emery Inorganic materials 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 241000251468 Actinopterygii Species 0.000 abstract description 2
- 235000019580 granularity Nutrition 0.000 abstract 3
- 230000000052 comparative effect Effects 0.000 description 13
- 238000013016 damping Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000003490 calendering Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000951498 Brachypteraciidae Species 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000012369 In process control Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010965 in-process control Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The application discloses a method for grinding a roller and a mirror roller. The application provides a method for grinding a roller, which comprises the following steps: a rough polishing step, which comprises the steps of centering a roller on a roller grinder, and carrying out rough grinding, semi-finish grinding and finish grinding on the roller by using a first model grinding wheel with the granularity of 80-100 meshes to obtain a first roller with the surface roughness Ra of 0.4-0.6 mu m; and a finish polishing step, which comprises the steps of performing the first roll centering on a roll grinder, providing a second type grinding wheel with the granularity of 500-600 meshes, and performing finish grinding on the first roll by using the second type grinding wheel to obtain a mirror surface roll with the surface roughness Ra of 0.015-0.025 mu m. This application is through using two kinds of emery wheels of different granularities, carries out two steps of grinding to the roll to through the parameter of optimizing among the grinding process, the roll surface that makes the grinding out reaches mirror surface effect, and its surface does not have defects such as chatter marks, sword flower, short fish tail, can satisfy the production demand of consumer to the roughness low, the steel that surface quality is high.
Description
Technical Field
The application belongs to the technical field of steel product production and processing, and particularly relates to a method for grinding a roller and a mirror roller.
Background
The grinding process of the roller is a series of production processes for grinding the roller into surface roughness, convexity and roller shape which are suitable for the production process requirements of the rolling mill by a grinding machine. The grinding of roller belongs to cylindrical grinding, and is characterized by that the grinding wheel and roller can make reciprocating relative movement, and the centre of the grinding wheel also can make micro up-and-down movement relative to the centre of roller, so that the contact depth between the grinding wheel and roller can be changed so as to grind the roller with a certain convexity.
With the development of guide rails and decoration markets, the demand for light panel products with bright panel surfaces, low roughness and small panel surface friction coefficient is obviously increased. However, in the traditional roll grinding process, the control of the knurl and vibration lines on the roll surface is difficult, and the roughness of the roll surface of the obtained mirror surface roll is higher (higher than 0.4 μm), so that the production requirement of a light panel product cannot be met.
Disclosure of Invention
The application provides a method for grinding a roller and a mirror surface roller, and aims to obtain the mirror surface roller with low roughness of the roller surface and good quality by optimizing a grinding process, so that the production and use requirements of smooth surface plates are met.
In one aspect, embodiments of the present application provide a method for grinding a roll, where the method includes: a rough polishing step, which comprises the steps of centering a roller on a roller grinder, and carrying out rough grinding, semi-finish grinding and finish grinding on the roller by using a first model grinding wheel with the granularity of 80-100 meshes to obtain a first roller with the surface roughness Ra of 0.4-0.6 mu m;
and a finish polishing step, which comprises the steps of carrying out roller centering on a roller grinding machine, providing a second type grinding wheel with the granularity of 500-600 meshes, and carrying out finish grinding on the first roller by using the second type grinding wheel so as to obtain the mirror roller with the surface roughness Ra of 0.015-0.025 mu m.
According to an embodiment of an aspect of the present application, providing a second type grinding wheel having a grit size of 500-600 mesh further comprises grinding the second type grinding wheel to passivate corners.
According to an embodiment of one aspect of the present application, the fine grinding of the first roll using the second type grinding wheel includes adjusting a jet flow rate and a jet angle of the grinding fluid, and setting a feed pressure of the second type grinding wheel to 0.8 to 1.2 MPa.
According to an embodiment of an aspect of the application, the mass fraction of the water-based compound in the grinding fluid is 3.5-4 wt%.
According to an embodiment of one aspect of the application, the second type of grinding wheel is a ceramic micro-crystalline corundum abrasive grinding wheel.
According to an embodiment of one aspect of the present application, a damper rubber sleeve is attached to a dial of the roll grinder in the rough polishing step and the finish polishing step.
According to an embodiment of one aspect of the present application, the deviation in the roll centering is ± 0.005mm in the rough polishing step and the finish polishing step.
According to an embodiment of an aspect of the present application, the roll profile deviation of the first roll is ± 0.002mm, and the crown deviation of the first roll is ± 0.005 mm.
According to an embodiment of an aspect of the present application, the roller profile deviation of the mirror surface roller is ± 0.002mm, and the crown deviation of the mirror surface roller is ± 0.005 mm.
According to an embodiment of one aspect of the application, the second type grinding wheel with the granularity of 500-600 meshes comprises:
a material mixing step, mixing the grinding material and the liquid resin, performing wheel milling on the mixed material for 50-70min, and then adding the solid resin, and performing wheel milling on the mixed material for 20-40min to obtain a mixed material;
a screening step, namely screening the mixed material by using a 60-80 mesh screen to obtain a screened material;
and a molding procedure, wherein the screening material is pressed and demoulded to obtain a second model grinding wheel.
In another aspect, the present embodiment provides a mirror-surface roller prepared by the above method, and the mirror-surface roller has a surface roughness Ra of 0.015 to 0.025 μm.
Compared with the prior art, the application has at least the following beneficial effects:
this application is through using the granularity to be 80 ~ 100 meshes and the granularity is two kinds of emery wheels of 500 ~ 600 meshes, carries out two steps of grinding to the roll to through optimizing the parameter among the grinding process, make the mirror surface roller roughness of preparing low, and its surface does not have defects such as chatter marks, sword flower, short fish tail, can satisfy the production demand of consumer to the roughness low, the high steel of surface quality. Meanwhile, the grinding method has the advantages of small process control difficulty, strong operability, simplicity and the like. In addition, the granularity that this application provided is 500 ~ 600 mesh second type emery wheel, still has better threshing performance under the high density situation, has guaranteed that the emery wheel can not cause grinding defects such as sword flower, chatter marks, oblique decorative pattern because of the promotion of emery wheel hardness in the use, fine assurance mirror surface roller's surface quality.
Detailed Description
In order to make the application purpose, technical solution and beneficial technical effects of the present application clearer, the present application is further described in detail with reference to the following embodiments. It should be understood that the embodiments described in this specification are only for the purpose of explaining the present application and are not intended to limit the present application.
For the sake of brevity, only a few numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual numerical value between the endpoints of a range is encompassed within that range. Thus, each point or individual value can form a range not explicitly recited as its own lower or upper limit in combination with any other point or individual value or in combination with other lower or upper limits.
In the description herein, it is to be noted that, unless otherwise specified, "above" and "below" are inclusive, and "a plurality" of "one or more" means two or more.
The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.
With the continuous progress of science and technology, the production process and the quality of the mirror roller are also continuously improved, however, the existing production process of the mirror roller has the defects of high production difficulty, complex process, high production cost and the like, and the produced mirror roller has high roughness and poor calendering effect and cannot meet the production requirement of high-quality steel.
In view of the above, the inventors have conducted extensive studies to provide a mirror-surface roll with low roughness and good surface quality by optimizing the production method of a grinding roll, thereby satisfying the production demand of high-quality steel.
Method for grinding a roll
Embodiments of the first aspect of the present application provide a method for grinding a roll, the method comprising the steps of:
s10, a rough polishing step, which comprises the steps of centering a roller on a roller grinder, and carrying out rough grinding, semi-fine grinding and fine grinding on the roller by using a first model grinding wheel with the granularity of 80-100 meshes to obtain a first roller with the surface roughness Ra of 0.4-0.6 mu m;
and S20, a fine polishing step, which comprises the steps of performing first roller centering on a roller grinder, providing a second type grinding wheel with the granularity of 500-600 meshes, and performing fine grinding on the first roller by using the second type grinding wheel to obtain a mirror roller with the surface roughness Ra of 0.015-0.025 mu m.
The method for grinding the roller has the advantages of being small in process control difficulty, strong in operability, simple and the like, and the produced mirror roller is low in roughness, good in surface quality and low in cost.
In some embodiments, the step S10 further includes:
s110, centering the roller on a roller grinder, setting the feed pressure of a first type grinding wheel with the granularity of 80-100 meshes to be 1MPa, and performing coarse grinding, semi-fine grinding and three-time fine grinding on the roller to obtain a first roller with the surface roughness Ra of 0.4-0.6 mu m, wherein the first roller can meet the primary surface quality requirement of the roller.
According to the embodiment of the application, after the first model sand wheel with the granularity of 80-100 meshes is adopted to perform rough grinding, semi-fine grinding and three-time fine grinding on the roller, the roughness Ra of the obtained roller can be as low as 0.4 mu m, and the ground roller surface has no defects such as vibration lines, knifes, short scratches and the like.
In some embodiments, in the step S20, the number of times of fine grinding is 5-7 times when the first roller is fine ground by the second type grinding wheel.
According to the embodiment of the application, in the fine polishing step, when the number of times of fine grinding is 5-7, the surface roughness Ra of the mirror roller can be reduced to 0.015-0.025 μm. When the fine grinding times are less than 5, the mirror surface roller with the required roughness can not be obtained; when the number of finish grindings is more than 7, the number of finish grindings is increased again, and the degree of change in the surface roughness of the mirror-surface roller is extremely small.
According to the embodiment of the application, the grinding wheels with two different particle sizes are adopted to grind the roller in two steps, parameters in the grinding process are optimized, so that the prepared mirror roller is low in roughness, the surface of the mirror roller is free of defects such as vibration lines, knife flowers and short scratches, and the production requirements of consumers on steel with low roughness and high surface quality can be met.
In some embodiments, providing a second type of wheel having a grit size of 500 to 600 mesh may further include grinding the second type of wheel to dull corners.
According to the embodiment of the application, the grinding of the second type grinding wheel comprises automatic grinding wheel finishing and manual grinding, the grinding of the two steps can ensure that the grinding wheel surface is parallel to the roller surface, the cutter mark left by the grinding wheel corner on the roller surface of the roller can be eliminated, and the grinding wheel corner and the roller surface can be effectively prevented from being defective due to combination.
In some embodiments, the fine grinding of the first roll using the second type grinding wheel may include adjusting a jet flow rate and a jet angle of the grinding fluid, and setting a feed pressure of the second type grinding wheel to 0.8 to 1.2 MPa.
In some embodiments, the spray flow rate for refining the first roll using the second type of grinding wheel is 140mL/s to 160mL/s, and preferably, the spray flow rate for refining the first roll using the second type of grinding wheel is 150 mL/s.
According to the embodiment of the application, by manually adjusting the jet flow and the jet angle, when the jet flow of the grinding fluid is 140-160 mL/s, the grinding fluid is not branched and is uniformly jetted to the contact position of the roll neck and the bearing. In addition, set up the feed pressure of second model emery wheel to 0.8 ~ 1.2MPa, can make second model emery wheel carry out better correct grinding to first roll, and guarantee that frictional resistance is moderate. If the feed pressure is too large, the second type grinding wheel is seriously abraded, and the repeated use of the grinding wheel is not facilitated.
In some embodiments, the mass fraction of the water-based compound in the grinding fluid may be 3.5 to 4 wt%.
According to the embodiment of the application, the grinding fluid can take away grinding heat generated by grinding between the grinding wheel and the roller, and the temperature of a grinding area is reduced. Meanwhile, the grinding fluid has a good lubricating effect, can effectively improve the grinding speed, reduce the grinding force, prolong the service life of the grinding wheel and improve the brightness of the roller. If the mass fraction of the water-based compound in the grinding fluid is less than 3.5 wt%, the lubricating and cooling capabilities of the grinding fluid are reduced, and the grinding is not facilitated; if the mass fraction of the water-based compound in the grinding fluid is higher than 4 wt%, the cost of the grinding fluid will be high, which in turn leads to an increase in the production cost of the mirror-surface roller.
In some embodiments, the second type wheel may be a ceramic micro-crystalline corundum abrasive wheel.
In some embodiments, the first model wheel may also be a ceramic micro-crystalline corundum abrasive wheel.
According to the embodiment of the application, the main component of the ceramic microcrystalline corundum abrasive is alpha-alumina, and the self-sharpening property and the toughness can be simultaneously considered while higher hardness is kept. Under the action of grinding force, particles can be peeled off in a very fine (nano) mode and a new grinding edge is continuously exposed, and heat generated during grinding can be taken away by the peeled-off grinding material, so that the grinding effect with high efficiency and long service life can be achieved.
In some embodiments, a damping rubber sleeve may be added to the drive plate of the roll grinder during the rough polishing step and the fine polishing step.
According to the embodiment of the application, the damping rubber sleeve is additionally arranged on the driving plate of the roll grinder, so that the vibration between the roll and the grinder can be effectively solved, the probability of the occurrence of vibration marks on the surface of the roll is reduced, and the surface quality of the roll is improved.
In some embodiments, the roll alignment can be within ± 0.005mm in the rough polishing step and the finish polishing step.
According to the embodiment of the present application, the smaller the deviation in roll centering, the weaker the roll vibration, and the higher the precision in grinding. If the deviation of the roller in the alignment is more than +/-0.005 mm, the defects of vibration lines and the like are generated on the surface of the roller, and the deviation of the roller shape and the convexity of the roller is large.
In some embodiments, the roll profile deviation of the first roll may be ± 0.002mm, and the crown deviation may be ± 0.005 mm.
According to the embodiment of the application, the smaller the deviation of the roller shape and the convexity of the first roller is, the more beneficial the grinding of the second type grinding wheel in the fine polishing step is, and meanwhile, a good foundation is laid for obtaining the mirror surface roller with smaller deviation.
In some embodiments, the roller profile deviation of the mirror surface roller may be ± 0.002mm, and the crown deviation of the mirror surface roller may be ± 0.005 mm.
According to the embodiment of the application, the mirror surface roller in the deviation range of the roller shape and the convexity has good application performance, compact structure and good calendering effect.
In some embodiments, providing a second model grinding wheel having a grit size of 500 to 600 mesh comprises:
a material mixing step, mixing the abrasive material and the liquid resin, performing wheel milling on the mixed material for 50-70min, adding the solid resin, and performing wheel milling on the mixed material for 20-40min to obtain a mixed material;
a screening step, namely screening the mixed material by using a 60-80-mesh screen to obtain a screened material;
and a molding procedure, namely pressing and demolding the sieve material to obtain the second model grinding wheel.
According to the examples of the present application, the abrasive and the resin are sieved using a 80-120 mesh screen before being mixed in the above-mentioned mixing process. In addition, in the preparation process of the second type grinding wheel, in order to prevent coarse grains from being mixed with, all the related tools and dies in the steps of mixing, screening and forming need to be carefully cleaned, the tools and the dies need not to be used in a mixed mode, and the humidity of the ambient environment during the preparation of the second type grinding wheel is preferably 40-60%.
According to the embodiment of the application, the manufacturing method of the second type grinding wheel ensures that the grinding wheel still has good threshing performance under a high-density condition, ensures that the grinding wheel cannot cause grinding defects such as knife marks, vibration marks, oblique patterns and the like due to the improvement of the hardness of the grinding wheel in the using process, and well ensures the surface quality of the mirror roller.
Mirror surface roller
On the other hand, the embodiment of the application provides a mirror roller, and the surface roughness Ra of the mirror roller is 0.015-0.025 μm.
According to the embodiment of the application, by adopting the roller grinding method provided by the first aspect, the obtained mirror surface roller has the advantages of low roughness, high surface quality, good calendering effect and low production cost. The mirror roller provided by the application can be applied to calendering production of high-quality steel and can also be used for calendering processing in leather industry and printing and dyeing industry.
Examples
The present disclosure is more particularly described in the following examples that are intended as illustrative only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further treatment, and the equipment used in the examples is commercially available.
The following examples used the following sources of starting materials:
ceramic microcrystalline corundum abrasive: the grinding tool, Inc. of round and square abrasives, Hunan province;
b01 resin liquid: the grinding tool, Inc. of round and square abrasives, Hunan province;
b22 resin powder: the grinding tool, Inc. of round and square abrasives, Hunan province;
other raw materials which are not particularly described are all common commercial products.
Example 1
The grinding method provided by the embodiment comprises the following steps:
a damping rubber sleeve is additionally arranged on a driving plate of the roll grinder;
centering a roller on a roller grinder, and performing coarse grinding, semi-fine grinding and 3-time fine grinding on the roller by using a first model grinding wheel with the granularity of 80 meshes to obtain a first roller;
and (3) carrying out first roller centering on a roller grinder, and carrying out fine grinding on the first roller for 6 times by using a second model grinding wheel with the granularity of 600 meshes to obtain the mirror surface roller.
Preparation of second model emery wheel includes:
adding the ceramic microcrystalline corundum abrasive and the B01 resin liquid into a 1100 type wheel-grinding mixer, and wheel-grinding the mixed materials for 60min, wherein an operator turns over the materials for 1 time by using a special tool every 10min in the period so that the bottom abrasive can be uniformly mixed. Then pouring B22 resin powder, and continuing to roll and mix the materials for 30min, wherein the operator turns the materials for 1 time by using a special tool every 10 min;
pouring the mixed grinding materials into a vibrating screen for 5 times, and screening for 2 times by using a 60-mesh screen, wherein an operator needs to manually rub the grinding materials in the screening process so as to facilitate discharging;
pouring the screened wet materials into a mold in batches, scraping the materials, pushing the materials into a 1000T press for pressing, wherein the pressing is performed for 2 times of prepressing, maintaining the pressure for 10min after mold closing, and finally demolding to obtain the second model grinding wheel.
Example 2
The grinding method provided by the embodiment comprises the following steps:
a damping rubber sleeve is additionally arranged on a driving plate of the roll grinder;
centering a roller on a roller grinder, and performing coarse grinding, semi-fine grinding and 3-time fine grinding on the roller by using a first model grinding wheel with the granularity of 100 meshes to obtain a first roller;
and (3) carrying out first roller centering on a roller grinder, and carrying out fine grinding on the first roller for 6 times by using a second model grinding wheel with the granularity of 500 meshes to obtain the mirror surface roller.
Preparation of second model emery wheel includes:
adding the ceramic microcrystalline corundum abrasive and the B01 resin liquid into a 1100 type wheel-grinding mixer, and wheel-grinding the mixed materials for 70min, wherein an operator turns over the materials for 1 time by using a special tool every 10min in the period so that the bottom abrasive can be uniformly mixed. Then pouring B22 resin powder, and continuing to roll and mix the materials for 20min, wherein the operator turns the materials for 1 time by using a special tool every 10 min;
pouring the mixed grinding materials into a vibrating screen for 5 times, and screening for 2 times by using a 60-mesh screen, wherein an operator needs to manually rub the grinding materials in the screening process so as to facilitate discharging;
pouring the screened wet materials into a mold in batches, scraping the materials, pushing the materials into a 1000T press for pressing, wherein the pressing is performed for 2 times of prepressing, maintaining the pressure for 10min after mold closing, and finally demolding to obtain the second model grinding wheel.
Example 3
The grinding method provided by the embodiment comprises the following steps:
a damping rubber sleeve is additionally arranged on a driving plate of the roll grinder;
centering a roller on a roller grinder, and performing coarse grinding, semi-fine grinding and 3-time fine grinding on the roller by using a first model grinding wheel with the granularity of 90 meshes to obtain a first roller;
and (3) carrying out first roller centering on a roller grinder, and carrying out fine grinding on the first roller for 6 times by using a second model grinding wheel with the granularity of 550 meshes to obtain the mirror surface roller.
Preparation of second model emery wheel includes:
adding the ceramic microcrystalline corundum abrasive and the B01 resin liquid into a 1100 type wheel-grinding mixer, and wheel-grinding and mixing for 50min, wherein an operator turns over the mixture for 1 time by using a special tool every 10min in the period so that the bottom abrasive can be uniformly mixed. Then pouring B22 resin powder, and continuing to roll and mix the materials for 40min, wherein the operator turns the materials for 1 time by using a special tool every 10 min;
pouring the mixed grinding materials into a vibrating screen for 5 times, and screening for 2 times by using a 70-mesh screen, wherein an operator needs to manually rub the grinding materials in the screening process so as to facilitate discharging;
pouring the screened wet materials into a mold in batches, scraping the materials, pushing the materials into a 1000T press for pressing, wherein the pressing is performed for 2 times of prepressing, maintaining the pressure for 10min after mold closing, and finally demolding to obtain the second model grinding wheel.
Comparative example
Comparative example 1
The grinding method provided by the comparative example comprises the following steps:
a damping rubber sleeve is additionally arranged on a driving plate of the roll grinder;
and (3) carrying out roller centering on a roller grinder, and carrying out coarse grinding, semi-fine grinding and 9-time fine grinding on the roller by using a first model grinding wheel with the granularity of 80 meshes to obtain the mirror roller.
Comparative example 2
The grinding method provided by the comparative example comprises the following steps:
a damping rubber sleeve is additionally arranged on a driving plate of the roll grinder;
and (4) carrying out roller centering on a roller grinder, and carrying out 9 times of fine grinding on the roller by using a second model grinding wheel with the granularity of 600 meshes to obtain the mirror surface roller.
Preparation of second model emery wheel includes:
adding the ceramic microcrystalline corundum abrasive and the B01 resin liquid into a 1100 type wheel-grinding mixer, and wheel-grinding the mixed materials for 60min, wherein an operator turns over the materials for 1 time by using a special tool every 10min in the period so that the bottom abrasive can be uniformly mixed. Then pouring B22 resin powder, and continuing to roll and mix the materials for 30min, wherein the operator turns the materials for 1 time by using a special tool every 10 min;
pouring the mixed grinding materials into a vibrating screen for 5 times, and screening for 2 times by using a 60-mesh screen, wherein an operator needs to manually rub the grinding materials in the screening process so as to facilitate discharging;
pouring the screened wet materials into a mold in batches, scraping the materials, pushing the materials into a 1000T press for pressing, wherein the pressing is performed for 2 times of prepressing, maintaining the pressure for 10min after mold closing, and finally demolding to obtain the second model grinding wheel.
Comparative example 3
The grinding method provided by the comparative example comprises the following steps:
centering a roller on a roller grinder, and performing coarse grinding, semi-fine grinding and 3-time fine grinding on the roller by using a first model grinding wheel with the granularity of 80 meshes to obtain a first roller;
and (3) carrying out first roller centering on a roller grinder, and carrying out fine grinding on the first roller for 6 times by using a second model grinding wheel with the granularity of 600 meshes to obtain the mirror surface roller.
Preparation of second model emery wheel includes:
adding the ceramic microcrystalline corundum abrasive and the B01 resin liquid into a 1100 type wheel-grinding mixer, and wheel-grinding the mixed materials for 60min, wherein an operator turns over the materials for 1 time by using a special tool every 10min in the period so that the bottom abrasive can be uniformly mixed. Then pouring B22 resin powder, and continuing to roll and mix the materials for 30min, wherein the operator turns the materials for 1 time by using a special tool every 10 min;
pouring the mixed grinding materials into a vibrating screen for 5 times, and screening for 2 times by using a 60-mesh screen, wherein an operator needs to manually rub the grinding materials in the screening process so as to facilitate discharging;
pouring the screened wet materials into a mold in batches, scraping the materials, pushing the materials into a 1000T press for pressing, wherein the pressing is performed for 2 times of prepressing, maintaining the pressure for 10min after mold closing, and finally demolding to obtain the second model grinding wheel.
Test section
The physical and chemical properties of the mirror roller prepared in the examples 1 to 3 and the comparative examples 1 to 3 were tested, and the specific test method was as follows:
roughness was measured using a roughness meter and errors were measured for roll profile and crown using a grinder's own belt measurement system.
The results of the test for the physical and chemical properties of the mirror roller prepared in examples 1 to 3 and comparative examples 1 to 3 are shown in table 1.
Table 1 results of physical and chemical properties test of mirror roller
As can be seen from the test results of the physicochemical properties of the mirror surface roller in table 1 above, the mirror surface rollers of examples 1 to 3 had low roughness, small variations in the roller shape and the crown, and good surface quality. Comparative example 1 is different from example 1 in that the roll was not ground using a grinding wheel having a grain size of 600 mesh, resulting in higher roughness of the mirror-finished roll in comparative example 1, more defects such as scratches and short scratches occurred on the surface, and a larger deviation of the roll shape and the crown. Comparative example 2 is different from example 1 in that the roller was not ground using a grinding wheel having a grain size of 80 mesh, and the roughness, the deviation of the roll shape and the crown and the surface quality of the mirror-surface roller were inferior to those of examples 1 to 4. Comparative example 3 is different from example 1 in that a vibration-damping rubber sleeve was not attached to the dial of the roll grinder, and therefore, the surface of the mirror-surface roll obtained had chatter marks, resulting in a low surface quality of the mirror-surface roll. The above experimental results show that the roller is ground in two steps by using two grinding wheels with the granularity of 80-100 meshes and the granularity of 500-600 meshes, the ground roller surface has a mirror surface effect by optimizing parameters in the grinding process, the roughness is low, the surface of the roller surface has no defects such as vibration lines, knifes and short scratches, and the production requirements of consumers on steel with low roughness and high surface quality can be met.
In summary, the grinding method provided by the application has the advantages of small process control difficulty, strong operability, simplicity and the like. In addition, the granularity that this application provided is 500 ~ 600 mesh second type emery wheel, still has better threshing performance under the high density situation, has guaranteed that the emery wheel can not cause the production of grinding defects such as sword flower, chatter marks, oblique decorative pattern because of the promotion of emery wheel hardness in the use, fine assurance mirror surface roller's surface quality.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of grinding a roll, comprising the steps of:
a rough polishing step, which comprises the steps of centering a roller on a roller grinder, and carrying out rough grinding, semi-finish grinding and finish grinding on the roller by using a first model grinding wheel with the granularity of 80-100 meshes to obtain a first roller with the surface roughness Ra of 0.4-0.6 mu m;
and a finish polishing step, which comprises the steps of performing the first roll centering on a roll grinder, providing a second type grinding wheel with the granularity of 500-600 meshes, and performing finish grinding on the first roll by using the second type grinding wheel to obtain a mirror surface roll with the surface roughness Ra of 0.015-0.025 mu m.
2. The method of claim 1, wherein providing a second type of wheel having a grit size of 500-600 mesh further comprises grinding the second type of wheel to passivate corners;
and the step of accurately grinding the first roller by using the second type grinding wheel comprises the step of adjusting the jet flow and the jet angle of the grinding fluid, and the feed pressure of the second type grinding wheel is set to be 0.8-1.2 MPa.
3. The method according to claim 2, characterized in that the mass fraction of the water-based compound in the grinding fluid is 3.5-4 wt%.
4. The method of claim 1, wherein the second type of wheel is a ceramic micro-crystalline corundum abrasive wheel.
5. The method of claim 1, wherein a shock-absorbing rubber sleeve is added to a dial of the roll grinder in the rough polishing step and the finish polishing step.
6. The method of claim 1, wherein the roll pair is biased to ± 0.005mm in the rough polishing step and the finish polishing step.
7. The method of claim 1, wherein the first roll has a roll profile deviation of ± 0.002mm and the first roll has a crown deviation of ± 0.005 mm.
8. The method of claim 1, wherein the mirror surface roller has a roll profile deviation of ± 0.002mm and a crown deviation of ± 0.005 mm.
9. The method of claim 1, wherein providing a second type of grinding wheel having a grit size of 500 to 600 mesh comprises:
a material mixing step, mixing the abrasive material and the liquid resin, performing wheel milling on the mixed material for 50-70min, adding the solid resin, and performing wheel milling on the mixed material for 20-40min to obtain a mixed material;
a screening step, namely screening the mixed material by using a 60-80-mesh screen to obtain a screened material;
and a molding procedure, namely pressing and demolding the sieve material to obtain the second model grinding wheel.
10. A mirror roller produced by the method according to any one of claims 1 to 9, characterized in that the mirror roller has a surface roughness Ra of 0.015 to 0.025 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586726.2A CN114986260B (en) | 2022-05-27 | 2022-05-27 | Method for grinding roller and mirror roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586726.2A CN114986260B (en) | 2022-05-27 | 2022-05-27 | Method for grinding roller and mirror roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114986260A true CN114986260A (en) | 2022-09-02 |
| CN114986260B CN114986260B (en) | 2024-07-16 |
Family
ID=83030111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210586726.2A Active CN114986260B (en) | 2022-05-27 | 2022-05-27 | Method for grinding roller and mirror roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114986260B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079507A (en) * | 2023-03-15 | 2023-05-09 | 西北有色金属研究院 | Grinding method of high-precision roller for rolling micron-sized rare metal foil |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07265912A (en) * | 1991-08-20 | 1995-10-17 | Sumitomo Metal Ind Ltd | Roll for rolling, grinding method therefor and metal sheet rolling method |
| CN103240280A (en) * | 2013-04-28 | 2013-08-14 | 首钢总公司 | Hot-rolled steel strip vertical stripe defect eliminating method |
| CN105215791A (en) * | 2014-06-27 | 2016-01-06 | 张红超 | Minute surface Roller Machining method and utilize the method for this minute surface Roller Machining minute surface aluminium sheet |
| CN107199507A (en) * | 2017-06-12 | 2017-09-26 | 首钢京唐钢铁联合有限责任公司 | Technological method for grinding roller |
| CN109482653A (en) * | 2018-11-21 | 2019-03-19 | 中铝河南洛阳铝加工有限公司 | A kind of roll grinding processes, roll and alloy mirror board preparation method |
| CN111872749A (en) * | 2020-06-17 | 2020-11-03 | 宁波宝新不锈钢有限公司 | Grinding method of mirror surface leveling roller |
| CN112276698A (en) * | 2020-06-30 | 2021-01-29 | 武汉钢铁有限公司 | Grinding method for controlling short scratches on surface of cold roller |
-
2022
- 2022-05-27 CN CN202210586726.2A patent/CN114986260B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07265912A (en) * | 1991-08-20 | 1995-10-17 | Sumitomo Metal Ind Ltd | Roll for rolling, grinding method therefor and metal sheet rolling method |
| CN103240280A (en) * | 2013-04-28 | 2013-08-14 | 首钢总公司 | Hot-rolled steel strip vertical stripe defect eliminating method |
| CN105215791A (en) * | 2014-06-27 | 2016-01-06 | 张红超 | Minute surface Roller Machining method and utilize the method for this minute surface Roller Machining minute surface aluminium sheet |
| CN107199507A (en) * | 2017-06-12 | 2017-09-26 | 首钢京唐钢铁联合有限责任公司 | Technological method for grinding roller |
| CN109482653A (en) * | 2018-11-21 | 2019-03-19 | 中铝河南洛阳铝加工有限公司 | A kind of roll grinding processes, roll and alloy mirror board preparation method |
| CN111872749A (en) * | 2020-06-17 | 2020-11-03 | 宁波宝新不锈钢有限公司 | Grinding method of mirror surface leveling roller |
| CN112276698A (en) * | 2020-06-30 | 2021-01-29 | 武汉钢铁有限公司 | Grinding method for controlling short scratches on surface of cold roller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079507A (en) * | 2023-03-15 | 2023-05-09 | 西北有色金属研究院 | Grinding method of high-precision roller for rolling micron-sized rare metal foil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114986260B (en) | 2024-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AT500593B1 (en) | ROLLING GRINDING PROCESS | |
| CN107127691B (en) | Polyurethane matrix stone grinding polished silicon wafer and preparation method thereof | |
| US2309819A (en) | Art of grinding and polishing glass and apparatus therefor | |
| CN108747877A (en) | A kind of self-sharpening hard alloy cutter buffing wheel and preparation method thereof | |
| CN114986260A (en) | Method for grinding roller and mirror roller | |
| CN105397651B (en) | A kind of jewel polishing cast molding micro mist skive and preparation method thereof | |
| CN101352839A (en) | CBN emery cutter of resin anchoring agent and preparation technique thereof | |
| CN112276698A (en) | Grinding method for controlling short scratches on surface of cold roller | |
| CN108237442B (en) | Processing technology of ultrathin ceramic fingerprint identification sheet | |
| CN105563354A (en) | Unsaturated polyester resin cerium oxide polishing disk and production technology thereof | |
| CN106926115A (en) | A kind of grinding pad and preparation method thereof | |
| CN108838890B (en) | Diamond grinding wheel dressing method | |
| CN102581778A (en) | Medical needle pin grinding wheel and manufacturing method thereof | |
| CN106736875A (en) | A kind of processing method of sapphire dome | |
| CN104625980A (en) | Precise grinding wheel for grinding rollers and manufacturing method for precise grinding wheel | |
| CN103481211A (en) | High-precision grinding consolidation flexible sand wheel and manufacturing method thereof | |
| CN110564367A (en) | Preparation of viscoelastic silicon carbide abrasive for honing aluminum alloy hub | |
| CN112476244B (en) | Superhard grinding tool dressing tool and preparation method thereof | |
| CN111188198B (en) | Efficient wear-resistant polishing material and preparation method thereof | |
| CN107498435A (en) | Battery paper tinsel method for grinding | |
| CN103331826B (en) | A kind of Novel diamond tool bit and preparation method thereof | |
| CN105651654B (en) | A kind of scuffing degree detection method of precise finiss silicon carbide powder | |
| CN202155806U (en) | Grinding wheel of angle grinder | |
| CN108453932A (en) | The preparation method of resin abrasive tools form a team abrasive material, preparation method and resin abrasive tools | |
| KR102309564B1 (en) | Wheel for grinding glass sheet and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |