CN112372381A - Roller neck grinding process - Google Patents
Roller neck grinding process Download PDFInfo
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- CN112372381A CN112372381A CN202011350316.5A CN202011350316A CN112372381A CN 112372381 A CN112372381 A CN 112372381A CN 202011350316 A CN202011350316 A CN 202011350316A CN 112372381 A CN112372381 A CN 112372381A
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- China
- Prior art keywords
- grinding wheel
- grinding
- roller
- vibration
- speed
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention discloses a roller neck grinding process, wherein a grinding wheel used is a monocrystalline corundum abrasive high-hardness resin grinding wheel SA80 NB; during grinding, the linear speed of the grinding wheel is 600-900 m/min, the axial feeding speed of the grinding wheel is less than 600mm/min, the feed rate of the grinding wheel is less than 0.01mm, the rotating speed of a roller is 25-30 r/min, and the current is 15 +/-1A. According to the invention, on one hand, the single-crystal corundum abrasive high-hardness resin grinding wheel SA80NB is used for replacing the existing conventional single-crystal corundum abrasive low-hardness ceramic grinding wheel SA80KV, and on the other hand, the micro-vibration amplitude of the grinding wheel and the self amplitude of a machine tool are balanced by optimizing grinding process parameters, particularly reducing the linear speed of the grinding wheel, so that the grinding vibration lines caused by vibration are reduced, the problem of roller neck vibration line grinding which troubles the roller grinding industry for many years can be solved, the form and position tolerance is obviously improved, and the product quality is greatly improved.
Description
Technical Field
The invention belongs to the technical field of grinding processing, and particularly relates to a roller neck grinding process.
Background
At present, the roll neck grinding of the roll is mainly carried out by adopting a ceramic grinding wheel for high-speed grinding, and the specification model of the grinding wheel is SA80KV, wherein SA represents a single-crystal corundum abrasive, 80 represents the granularity, K represents the hardness grade, and V represents a ceramic bond. The grinding process parameters mainly comprise: the linear speed of the grinding wheel is 1200-1440 m/min, the axial feeding speed of the grinding wheel is 800-1000 mm/min, the feed amount of the grinding wheel is 0.015-0.02 mm, the rotating speed of the roller is 30-35 r/min, and the current is 22 +/-1A.
The excessively hard binding agent and the high-speed grinding can generate vibration marks at the roll neck part, the vibration marks cannot be seen by naked eyes after being ground, the roll neck part needs to be supported to idle for about 10 minutes, and the obvious vibration marks can be seen, and if the vibration marks exist on the roll, the vibration marks can be printed on the directly contacted plate surface.
At present, the demand for high-end plates is increasing at home and abroad, and especially the demand for the roll neck part as a reference surface is increasing. Foreign countries such as Hitachi metals, POSCO, Oriental metallurgy and European customers have strict requirements on vibration lines, runout and the like of the roll neck part of the roll. The requirements of the roller neck parts of the roller such as the horse steel, the first steel, the Guangxi steel and the like in China are close to the limit of the current manufacturing.
Disclosure of Invention
The invention aims to solve the problems and provides a roller neck grinding process which can prevent chatter marks from being generated during roller neck grinding.
The technical scheme for realizing the purpose of the invention is as follows: a grinding process for the neck of roller features that the grinding wheel used is a high-hardness resin grinding wheel SA80NB made of single-crystal corundum abrasive.
Wherein SA represents a single-crystal corundum abrasive, 80 represents a grain size, N represents a hardness grade, and B represents a resin binder.
During grinding, the linear speed of the grinding wheel is 600-900 m/min, preferably 800 m/min; the axial feeding speed of the grinding wheel is less than 600mm/min, preferably 480 mm/min; the feed amount of the grinding wheel is less than 0.01mm, and preferably 0.008 mm; the rotating speed of the roller is 25-30 r/min; the current is 15 +/-1A.
The invention has the following positive effects: according to the invention, on one hand, the single-crystal corundum abrasive high-hardness resin grinding wheel SA80NB is used for replacing the existing conventional single-crystal corundum abrasive low-hardness ceramic grinding wheel SA80KV, and on the other hand, the micro-vibration amplitude of the grinding wheel and the self amplitude of a machine tool are balanced by optimizing grinding process parameters, particularly reducing the linear speed of the grinding wheel, so that the grinding vibration lines caused by vibration are reduced, the problem of roller neck vibration line grinding which troubles the roller grinding industry for many years can be solved, the form and position tolerance is obviously improved, and the product quality is greatly improved.
Detailed Description
(example 1)
The grinding wheel used in the roll neck grinding process of the embodiment is a single crystal corundum abrasive high-hardness resin grinding wheel SA80 NB.
Wherein SA represents a single-crystal corundum abrasive, 80 represents a grain size, N represents a hardness grade, and B represents a resin binder.
During grinding, the linear speed of the grinding wheel is 800m/min, the axial feeding speed of the grinding wheel is 480mm/min, the feed amount of the grinding wheel is 0.008mm, the rotating speed of the roller is 27r/min, and the current is 15 +/-1A.
The single crystal corundum abrasive high-hardness resin grinding wheel SA80NB of the embodiment 1 and grinding process parameters are adopted to carry out roll neck grinding on 5 rollers (marked as 1# to 5 #) of the same batch, and the results are shown in Table 1.
TABLE 1
Comparative example 1
The roll neck grinding is carried out on 5 rolls (marked as 6# -10 #) of the same batch type as the embodiment 1 according to the conventional grinding process parameters by adopting the conventional single-crystal corundum abrasive low-hardness ceramic grinding wheel SA80KV, and the result is shown in Table 2.
The existing grinding process parameters are as follows: the linear speed of the grinding wheel is 1320m/min, the axial feeding speed of the grinding wheel is 800mm/min, the feed amount of the grinding wheel is 0.015mm, the rotating speed of the roller is 32r/min, and the current is 22 +/-1A.
TABLE 2
Comparative example 2
The single crystal corundum abrasive high-hardness resin grinding wheel SA80NB of the embodiment 1 is adopted to carry out roller neck grinding on 5 rollers (marked as 11# to 15 #) of the same batch type as the embodiment 1 according to the grinding process parameters of the comparative example 1, and the results are shown in Table 3.
TABLE 3
(comparative example 3)
The roll neck grinding is carried out on 5 rolls (16 # -20 #) in the same batch type as the embodiment 1 according to the grinding process parameters of the embodiment 1 by adopting the prior conventional single-crystal corundum abrasive low-hardness ceramic grinding wheel SA80KV, and the result is shown in Table 4.
TABLE 4
Claims (5)
1. A roller neck grinding process, the grinding wheel used is a high-hardness resin grinding wheel SA80NB of single crystal corundum abrasive; during grinding, the linear speed of the grinding wheel is 600-900 m/min; the axial feeding speed of the grinding wheel is less than 600 mm/min; the feed amount of the grinding wheel is less than 0.01 mm; the rotating speed of the roller is 25-30 r/min; the current is 15 +/-1A.
2. The roll neck grinding process of claim 1, wherein: the linear speed of the grinding wheel is 800 m/min.
3. The roll neck grinding process of claim 1, wherein: the axial feeding speed of the grinding wheel is 480 mm/min.
4. The roll neck grinding process of claim 1, wherein: the feed amount of the grinding wheel is 0.008 mm.
5. The roll neck grinding process of claim 1, wherein: the linear speed of the grinding wheel is 800m/min, the axial feeding speed of the grinding wheel is 480mm/min, the feed amount of the grinding wheel is 0.008mm, and the rotating speed of the roller is 27 r/min; the current is 15 +/-1A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350316.5A CN112372381A (en) | 2020-11-27 | 2020-11-27 | Roller neck grinding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350316.5A CN112372381A (en) | 2020-11-27 | 2020-11-27 | Roller neck grinding process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112372381A true CN112372381A (en) | 2021-02-19 |
Family
ID=74588592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011350316.5A Pending CN112372381A (en) | 2020-11-27 | 2020-11-27 | Roller neck grinding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112372381A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172342A (en) * | 1973-08-27 | 1979-10-30 | Gunter & Cooke, Inc. | Method of forming a ring doffer |
| CN1761552A (en) * | 2003-03-20 | 2006-04-19 | 3M创新有限公司 | Use of an abrasive article with agglomerates |
| CN101269480A (en) * | 2007-03-20 | 2008-09-24 | 鞍山市砂轮厂 | Process for manufacturing roller abrasive wheel |
| CN101417403A (en) * | 2008-12-03 | 2009-04-29 | 宝钢集团常州轧辊制造公司 | Method for grinding and processing Sendzimer roller |
-
2020
- 2020-11-27 CN CN202011350316.5A patent/CN112372381A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4172342A (en) * | 1973-08-27 | 1979-10-30 | Gunter & Cooke, Inc. | Method of forming a ring doffer |
| CN1761552A (en) * | 2003-03-20 | 2006-04-19 | 3M创新有限公司 | Use of an abrasive article with agglomerates |
| CN101269480A (en) * | 2007-03-20 | 2008-09-24 | 鞍山市砂轮厂 | Process for manufacturing roller abrasive wheel |
| CN101417403A (en) * | 2008-12-03 | 2009-04-29 | 宝钢集团常州轧辊制造公司 | Method for grinding and processing Sendzimer roller |
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