A low roughness roll surface grinding control method

Abstract

The present application relates to a kind of low roughness roll surface grinding control method, comprising the following steps: (1) confirming the roll diameter is between 240-260mm;(2) roll surface middle position temperature is less than 35 degrees after grinding;(3) using 320# grinding wheel grinding to surface roughness Ra≤0.25um;(4) using 500# grinding wheel grinding to surface roughness Ra≤0.05um;(5) using 1000# grinding wheel grinding to surface roughness Ra≤0.015um;(6) to 1000# grinding wheel is refined;(7) again using 1000# grinding wheel grinding to surface roughness Ra≤0.015um;(8) using graphite grinding wheel polishing to surface roughness Ra≤0.015um;(9) testing roll surface.The low roughness roll surface grinding control method of the present application uses 320#, 500#, 1000#, graphite grinding wheel four kinds of grinding wheel to grind roll, optimizes the parameter in grinding process, and the mirror surface roll surface roughness obtained by processing is low, less than 0.015um, and the surface quality is high, uniformity is good, and grinding mark is less;At the same time, process control difficulty is small, and operability is strong.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of grinding process, in particular to a low roughness roll surface grinding control method. BACKGROUND

[0002] The grinding process of the roll is a series of production processes by which the roll is ground into a surface roughness, crown and roll shape suitable for the production process requirements of the rolling mill.

[0003] Mirror roll is used for the polishing process of aluminum plate, and with the development of the market, the demand for aluminum products with bright surface, low roughness and small plate friction coefficient has significantly increased. However, the mirror roll ground by the traditional roll grinding process has a higher roll surface roughness, generally higher than 0.4 um, which cannot meet the production requirements of the bright aluminum product. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a low roughness roll surface grinding control method, which can process mirror roll with low roughness and high surface quality.

[0005] The present application adopts the following scheme: a low roughness roll surface grinding control method, comprising the following steps: (1) confirming that the roll diameter is between 240-260 mm; (2) grinding after the roll surface middle position temperature is less than 35 degrees; (3) grinding to a surface roughness Ra≤0.25 um using a 320# grinding wheel; (4) grinding to a surface roughness Ra≤0.05 um using a 500# grinding wheel; (5) grinding to a surface roughness Ra≤0.015 um using a 1000# grinding wheel; (6) finishing the 1000# grinding wheel; (7) grinding to a surface roughness Ra≤0.015 um using the 1000# grinding wheel again; (8) polishing to a surface roughness Ra≤0.015 um using a graphite grinding wheel; (9) inspecting the roll surface, if the inspection is unqualified, returning to step (5), if the inspection is qualified, storing the roll with rust-proof oil paper.

[0006] Further, the step (3) is specifically ground as follows: rough grinding, semi-fine grinding and fine grinding are carried out in turn; when rough grinding, the linear speed of grinding wheel is 11-13 m / s, the headstock speed is 25 revolutions / min, the support plate speed is 1260 mm / min, the current is 8-10 A, the end feed is 1 um, and the continuous feed is 1 um; the semi-fine grinding passes are 2-4, the linear speed of grinding wheel is 9-10 m / s, the headstock speed is 28-37 revolutions / min, the support plate speed is 860-1060 mm / min, the current is 6.5-18 A, the end feed is 1 um, and the continuous feed is 0 um; the fine grinding passes are 3, the linear speed of grinding wheel of the first two passes is 8 m / s, the headstock speed is 40 revolutions / min, the support plate speed is 660 mm / min, the current is 6.5 A, the end feed is 0 um, and the continuous feed is 0 um; the linear speed of grinding wheel of the third pass is 7 m / s, the headstock speed is 43 revolutions / min, the support plate speed is 500 mm / min, the current is 5.5 A, the end feed is 0 um, and the continuous feed is 0 um.

[0007] Further, the step (3) is specifically ground as follows: rough grinding, semi-fine grinding and fine grinding are carried out in turn; when rough grinding, the linear speed of grinding wheel is 11-13 m / s, the headstock speed is 25 revolutions / min, the support plate speed is 1260 mm / min, the current is 8-10 A, the end feed is 1 um, and the continuous feed is 1 um; the semi-fine grinding passes are 2-4, the linear speed of grinding wheel is 9-10 m / s, the headstock speed is 28-37 revolutions / min, the support plate speed is 860-1060 mm / min, the current is 6.5-8 A, the end feed is 1 um, and the continuous feed is 0 um; the fine grinding passes are 3, the linear speed of grinding wheel of the first two passes is 8 m / s, the headstock speed is 40 revolutions / min, the support plate speed is 660 mm / min, the current is 6.5 A, the end feed is 0 um, and the continuous feed is 0 um; the linear speed of grinding wheel of the third pass is 7 m / s, the headstock speed is 43 revolutions / min, the support plate speed is 500 mm / min, the current is 5.5 A, the end feed is 0 um, and the continuous feed is 0 um.

[0008] Further, the specific grinding process in step (5) is as follows: rough grinding, semi-finish grinding, and finish grinding are performed sequentially; before rough grinding, when the grinding wheel is in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, 6 passes of rough grinding are performed, with the grinding wheel linear speed at 11-13 m / s, the headstock speed at 25 rpm, the pallet speed at 1260 mm / min, the current at 8-10 A, the end feed at 1 μm, and the continuous feed at 1 μm; the semi-finish grinding passes are 4, with the grinding wheel linear speed at 9-10 m / s. The headstock speed is 28~37 rpm, the pallet speed is 860~1060 mm / min, the current is 6.5-8A, the end feed is 1µm, and the continuous feed is 0µm; the finishing grinding passes are 3, the first two passes have a grinding wheel linear speed of 8m / s, a headstock speed of 40 rpm, a pallet speed of 660 mm / min, a current of 6.5A, an end feed of 0µm, and a continuous feed of 0µm; the third pass has a grinding wheel linear speed of 7m / s, a headstock speed of 43 rpm, a pallet speed of 500 mm / min, a current of 5.5A, an end feed of 0µm, and a continuous feed of 0µm.

[0009] Furthermore, in step (6), the finishing passes are 5, the grinding wheel linear speed is 15 m / s, the pallet speed is 100 mm / min, and the end feed is 0.1 μm.

[0010] Further, the specific grinding process in step (7) is as follows: semi-finish grinding and finish grinding are performed sequentially; before semi-finish grinding, when in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, 5 semi-finish grinding passes are performed. In the first pass, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 8 A, the end feed is 1 μm, and the continuous feed is 1 μm. In the next 4 passes, the grinding wheel linear speed is 9-10 m / s, and the headstock speed is 10-10 m / s. Rotation speed 28~37 rpm, pallet speed 860~1060 mm / min, current 6.5-8A, end feed 1µm, continuous feed 0µm; finishing grinding passes 3 times, first two passes: grinding wheel linear speed 8m / s, headstock speed 40 rpm, pallet speed 660 mm / min, current 6.5A, end feed 0µm, continuous feed 0µm; third pass: grinding wheel linear speed 7m / s, headstock speed 43 rpm, pallet speed 500 mm / min, current 5.5A, end feed 0µm, continuous feed 0µm.

[0011] Further, the specific polishing process in step (8) is as follows: First polishing and second polishing are performed sequentially; before the first polishing, when in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, five passes of first polishing are performed. In the first pass, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 8 A, the end feed is 1 μm, and the continuous feed is 1 μm. In the subsequent four passes, the grinding wheel linear speed is 9-10 m / s, the headstock speed is 10-10 m / s, and the headstock speed is 1260 mm / min. The headstock speed is 28~37 rpm, the pallet speed is 860~1060 mm / min, the current is 6.5-8A, the end feed is 1µm, and the continuous feed is 0µm. The secondary polishing passes are 3. The first two passes have a grinding wheel linear speed of 8m / s, a headstock speed of 45 rpm, a pallet speed of 500 mm / min, a current of 6.5A, and an end feed of 0µm and a continuous feed of 0µm. The third pass has a grinding wheel linear speed of 7m / s, a headstock speed of 47 rpm, a pallet speed of 400 mm / min, a current of 5.5A, and an end feed of 0µm and a continuous feed of 0µm.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The low roughness roll surface grinding control method of the present invention uses four types of grinding wheels, namely 320#, 500#, 1000# and graphite grinding wheels, to grind the roll. By improving the grinding process and optimizing the parameters in the grinding process, the surface roughness of the mirror roll obtained is low, less than 0.015um, and the surface quality is high, the uniformity is good, and the grinding marks are few. At the same time, the process control of the present invention is simple and easy to operate.

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through specific embodiments and related drawings. Attached Figure Description Detailed Implementation

[0014] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] A method for controlling the surface grinding of a low-roughness roll includes the following steps: (1) Confirm that the roll diameter is between 240-260mm. If the diameter is less than 240mm, it should be scrapped in time; (2) After using the old roll, grind it on the machine after the temperature of the middle position of the roll surface is less than 35 degrees; (3) Grind it with a 320# grinding wheel until the surface roughness Ra≤0.25um; (4) Grind it with a 500# grinding wheel until the surface roughness Ra≤0.05um; (5) Grind it with a 1000# grinding wheel until the surface roughness Ra≤0.015um; (6) Repair the 1000# grinding wheel; (7) Grind it again with a 1000# grinding wheel until the surface roughness Ra≤0.015um; (8) Polish it with a graphite grinding wheel until the surface roughness Ra≤0.015um; (9) Inspect the roll surface. If the inspection is not qualified, return to step (5). If the inspection is qualified, wrap it with anti-rust oil and store it.

[0017] Before grinding, the roll eccentricity should be adjusted to ≤0.003mm. During the grinding process, it is not allowed to change the eccentricity or replace the roll.

[0018] In this embodiment, the specific grinding process in step (3) is as follows: rough grinding, semi-finish grinding, and finish grinding are performed sequentially; there are no specific requirements for the number of passes in rough grinding, and grinding continues until a roller shape is formed or the fatigue layer is removed. During rough grinding, the grinding wheel linear speed is 11-13 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 8-10 A, the end feed is 1 μm, and the continuous feed is 1 μm; the semi-finish grinding has 2-4 passes, the grinding wheel linear speed is 9-10 m / s, the headstock speed is 28-37 rpm, and the pallet speed is 860 mm / min. ~1060mm / min, current 6.5-18A, end feed 1µm, continuous feed 0µm; 3 grinding passes, the first two passes have a grinding wheel linear speed of 8m / s, headstock speed of 40 rpm, pallet speed of 660mm / min, current 6.5A, end feed 0µm, continuous feed 0µm; the third pass has a grinding wheel linear speed of 7m / s, headstock speed of 43 rpm, pallet speed of 500mm / min, current 5.5A, end feed 0µm, continuous feed 0µm.

[0019] During the grinding process in step (3), the 320# grinding wheel needs to be dressed according to the uniformity of grinding. The specific dressing process is as follows:

[0020]

[0021] In this embodiment, the specific grinding process in step (4) is as follows: rough grinding, semi-finish grinding, and finish grinding are performed sequentially; the rough grinding consists of 6 passes, with a grinding wheel linear speed of 11-13 m / s, a headstock speed of 25 rpm, a pallet speed of 1260 mm / min, a current of 8-10 A, an end feed of 1 μm, and a continuous feed of 1 μm; the semi-finish grinding consists of 2-4 passes, with a grinding wheel linear speed of 9-10 m / s, a headstock speed of 28-37 rpm, and a pallet speed of 860-1060 mm / min. The current is 6.5-8A, the end feed is 1µm, and the continuous feed is 0µm; the finishing grinding passes are 3. The first two passes have a grinding wheel linear speed of 8m / s, a headstock speed of 40 rpm, a pallet speed of 660 mm / min, a current of 6.5A, an end feed of 0µm, and a continuous feed of 0µm; the third pass has a grinding wheel linear speed of 7m / s, a headstock speed of 43 rpm, a pallet speed of 500 mm / min, a current of 5.5A, an end feed of 0µm, and a continuous feed of 0µm.

[0022] During the grinding process in step (4), the 500# grinding wheel needs to be dressed according to the uniformity of grinding. The specific dressing process is as follows:

[0023]

[0024] In this embodiment, the specific grinding process in step (5) is as follows: rough grinding, semi-finish grinding, and finish grinding are performed sequentially; before rough grinding, when the grinding wheel is in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, 6 passes of rough grinding are performed, with the grinding wheel linear speed at 11-13 m / s, the headstock speed at 25 rpm, the pallet speed at 1260 mm / min, the current at 8-10 A, the end feed at 1 μm, and the continuous feed at 1 μm. The semi-finish grinding passes are 4, with the grinding wheel linear speed at 9-10 m / s. The headstock speed is 28~37 rpm, the pallet speed is 860~1060 mm / min, the current is 6.5-8A, the end feed is 1µm, and the continuous feed is 0µm; the finishing grinding passes are 3, the first two passes have a grinding wheel linear speed of 8m / s, a headstock speed of 40 rpm, a pallet speed of 660 mm / min, a current of 6.5A, an end feed of 0µm, and a continuous feed of 0µm; the third pass has a grinding wheel linear speed of 7m / s, a headstock speed of 43 rpm, a pallet speed of 500 mm / min, a current of 5.5A, an end feed of 0µm, and a continuous feed of 0µm.

[0025] During the grinding process in step (5), the 1000# grinding wheel needs to be dressed according to the uniformity of grinding. The specific dressing process is as follows:

[0026]

[0027] In this embodiment, the finishing passes in step (6) are 5, the grinding wheel linear speed is 15 m / s, the pallet speed is 100 mm / min, and the end feed is 0.1 μm; to keep the abrasive grains on the grinding wheel surface uniform and reduce the number of grinding marks after the roll grinding.

[0028] In this embodiment, the specific grinding process of step (7) is as follows: semi-finish grinding and fine grinding are performed sequentially; before semi-finish grinding, when in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, 5 semi-finish grinding passes are performed. In the first pass, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 8 A, the end feed is 1 μm, and the continuous feed is 1 μm. In the next 4 passes, the grinding wheel linear speed is 9-10 m / s, the headstock speed is 1260 mm / min, the current is 8 A, the end feed is 1 μm, and the continuous feed is 1 μm. The headstock speed is 28~37 rpm, the pallet speed is 860~1060 mm / min, the current is 6.5-8A, the end feed is 1µm, and the continuous feed is 0µm. The finishing grinding passes are 3. The first two passes have a grinding wheel linear speed of 8m / s, a headstock speed of 40 rpm, a pallet speed of 660 mm / min, a current of 6.5A, an end feed of 0µm, and a continuous feed of 0µm. The third pass has a grinding wheel linear speed of 7m / s, a headstock speed of 43 rpm, a pallet speed of 500 mm / min, a current of 5.5A, an end feed of 0µm, and a continuous feed of 0µm.

[0029] Step (8) The specific polishing process is as follows: First polishing and second polishing are performed sequentially; before the first polishing, when in the approaching state, the grinding wheel linear speed is 11m / s, the headstock speed is 25 rpm, the pallet speed is 1260mm / min, the current is 7A, the end feed is 1µm, and the continuous feed is 1µm. Then, five first polishing passes are performed. In the first pass, the grinding wheel linear speed is 11m / s, the headstock speed is 25 rpm, the pallet speed is 1260mm / min, the current is 8A, the end feed is 1µm, and the continuous feed is 1µm. In the next four passes, the grinding wheel linear speed is 9-10m / s, the headstock speed is 1260mm / min, the current is 8A, the end feed is 1µm, and the continuous feed is 1µm. The grinding wheel speed is 28~37 rpm, the pallet speed is 860~1060 mm / min, the current is 6.5-8A, the end feed is 1µm, and the continuous feed is 0µm; the secondary polishing passes are 3, the first two passes have a grinding wheel linear speed of 8m / s, a headstock speed of 45 rpm, a pallet speed of 500 mm / min, a current of 6.5A, an end feed of 0µm, and a continuous feed of 0µm; the third pass has a grinding wheel linear speed of 7m / s, a headstock speed of 47 rpm, a pallet speed of 400 mm / min, a current of 5.5A, an end feed of 0µm, and a continuous feed of 0µm.

[0030] During the polishing process in step (8), the graphite grinding wheel needs to be dressed according to the uniformity of grinding. The specific dressing process is as follows:

[0031]

[0032] During the grinding and polishing process in each step (3), (4), (6), (7), and (8), the semi-finishing parameters can be adjusted appropriately according to the changes in the diameter of the grinding wheel and the differences between different rollers (the parameter adjustment range shall not exceed 3%). If the roughness does not reach the target value, the number of semi-finishing passes can be increased appropriately.

[0033] Step (9) Use a flashlight to inspect the grinding marks on the rolls. If any of the following conditions are met, the rolls are considered unqualified:

[0034] (1) The length of grinding marks on the roller surface is >1 mm.

[0035] (2) The length of the grinding marks on the roller surface is ≤1MM, and the number of grinding marks visible to the naked eye in the longitudinal direction is ≥10 with a cross-sectional width of 10mm.

[0036] (3) Obvious and regular grinding marks are visible on the roller surface.

[0037] Unless otherwise stated, if any of the technical solutions disclosed in this invention specify a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this invention discloses only some numerical values ​​to illustrate the technical solutions of this invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0038] If this invention discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0039] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0040] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for controlling the grinding of low-roughness roll surfaces, characterized in that: Includes the following steps: (1) Confirm that the diameter of the roll is between 240-260mm; (2) Grind the roll after the temperature at the middle position of the roll surface is less than 35 degrees; (3) Grind the roll with a 320# grinding wheel until the surface roughness Ra≤0.25um; The specific grinding process is as follows: rough grinding, semi-finish grinding and finish grinding are performed in sequence; During rough grinding, the grinding wheel linear speed is 11-13m / s, the headstock speed is 25 rpm, the pallet speed is 1260mm / min, the current is 8~10A, the end feed is 1um, and the continuous feed is The initial feed rate is 1µm; the semi-finishing process consists of 2-4 passes, with a grinding wheel linear speed of 9-10 m / s, a headstock speed of 28-37 rpm, a pallet speed of 860-1060 mm / min, a current of 6.5-18 A, an end feed rate of 1µm, and a continuous feed rate of 0µm; the finish grinding process consists of 3 passes, with the first two passes having a grinding wheel linear speed of 8 m / s, a headstock speed of 40 rpm, a pallet speed of 660 mm / min, a current of 6.5 A, an end feed rate of 0µm, and a continuous feed rate of 0µm. The third grinding wheel linear speed is 7m / s, the headstock speed is 43 rpm, the pallet speed is 500mm / min, the current is 5.5A, the end feed is 0um, and the continuous feed is 0um; (4) Grind with a 500# grinding wheel until the surface roughness Ra≤0.05um; (5) Grind with a 1000# grinding wheel until the surface roughness Ra≤0.015um; (6) Finish the 1000# grinding wheel; (7) Grind again with a 1000# grinding wheel until the surface roughness Ra≤0.015um; (8) Polish with a graphite grinding wheel until the surface roughness Ra≤0.015um; (9) Inspect the roll surface. If the inspection is not qualified, return to step (5). If the inspection is qualified, wrap it with anti-rust oil and store it.

2. The low-roughness roll surface grinding control method according to claim 1, characterized in that: The specific grinding process in step (4) is as follows: rough grinding, semi-finish grinding and finish grinding are performed in sequence; the rough grinding has 6 passes, the grinding wheel linear speed is 11-13m / s, the headstock speed is 25 rpm, the pallet speed is 1260mm / min, the current is 8-10A, the end feed is 1µm, and the continuous feed is 1µm; the semi-finish grinding has 2-4 passes, the grinding wheel linear speed is 9-10m / s, the headstock speed is 28-37 rpm, the pallet speed is 860-1060mm / min, the current is 6.5-8A, the end feed is 1µm, and the continuous feed is 0µm; the finish grinding has 3 passes, the first two passes have a grinding wheel linear speed of 8m / s, a headstock speed of 40 rpm, a pallet speed of 660mm / min, a current of 6.5A, an end feed is 0µm, and the continuous feed is 0µm; The third grinding wheel linear speed is 7 m / s, the headstock speed is 43 rpm, the pallet speed is 500 mm / min, the current is 5.5 A, the end feed is 0 μm, and the continuous feed is 0 μm.

3. The low-roughness roll surface grinding control method according to claim 1, characterized in that: Step (5) The specific grinding process is as follows: rough grinding, semi-finish grinding and finish grinding are performed in sequence; before rough grinding, when in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, 6 rough grinding passes are performed, with the grinding wheel linear speed being 11-13 m / s, the headstock speed being 25 rpm, the pallet speed being 1260 mm / min, the current being 8-10 A, and the end feed being 1 μm. The continuous feed rate is 1µm; the semi-finish grinding has 4 passes, with a grinding wheel linear speed of 9-10 m / s, a headstock speed of 28-37 rpm, a pallet speed of 860-1060 mm / min, a current of 6.5-8 A, an end feed rate of 1µm, and a continuous feed rate of 0µm; the finish grinding has 3 passes, with the first two passes having a grinding wheel linear speed of 8 m / s, a headstock speed of 40 rpm, a pallet speed of 660 mm / min, a current of 6.5 A, an end feed rate of 0µm, and a continuous feed rate of 0µm. The third grinding wheel linear speed is 7 m / s, the headstock speed is 43 rpm, the pallet speed is 500 mm / min, the current is 5.5 A, the end feed is 0 μm, and the continuous feed is 0 μm.

4. The low-roughness roll surface grinding control method according to claim 1, characterized in that: In step (6), there are 5 finishing passes, the grinding wheel linear speed is 15 m / s, the pallet speed is 100 mm / min, and the end feed is 0.1 μm.

5. The low-roughness roll surface grinding control method according to claim 1, characterized in that: Step (7) The specific grinding process is as follows: Semi-finish grinding and finish grinding are performed sequentially; before semi-finish grinding, when in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, 5 semi-finish grinding passes are performed. In the first pass, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 8 A, and the end feed is 1 μm. The continuous feed rate is 1µm, the linear speed of the grinding wheel for the next 4 passes is 9-10 m / s, the headstock speed is 28-37 rpm, the pallet speed is 860-1060 mm / min, the current is 6.5-8 A, the end feed rate is 1µm, and the continuous feed rate is 0µm; the finishing grinding passes are 3, the linear speed of the grinding wheel for the first two passes is 8 m / s, the headstock speed is 40 rpm, the pallet speed is 660 mm / min, the current is 6.5 A, the end feed rate is 0µm, and the continuous feed rate is 0µm; The third grinding wheel linear speed is 7 m / s, the headstock speed is 43 rpm, the pallet speed is 500 mm / min, the current is 5.5 A, the end feed is 0 μm, and the continuous feed is 0 μm.

6. The low-roughness roll surface grinding control method according to claim 1, characterized in that: Step (8) The specific polishing process is as follows: First and second polishing are performed sequentially; before the first polishing, when in the approximation state, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 7 A, the end feed is 1 μm, and the continuous feed is 1 μm. Then, five passes of first polishing are performed. In the first pass, the grinding wheel linear speed is 11 m / s, the headstock speed is 25 rpm, the pallet speed is 1260 mm / min, the current is 8 A, and the end feed is 1 μm. The first polishing pass consists of 3 passes. The first two passes have a grinding wheel linear speed of 8 m / s, a headstock speed of 45 rpm, a pallet speed of 500 mm / min, a current of 6.5-8 A, an end feed of 1 μm, and a continuous feed of 0 μm. The third grinding wheel linear speed is 7 m / s, the headstock speed is 47 rpm, the pallet speed is 400 mm / min, the current is 5.5 A, the end feed is 0 μm, and the continuous feed is 0 μm.

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