FIELD: process engineering.
SUBSTANCE: invention relates to abrasive machining and may be used in making fuel element shells for nuclear reactors. Outer surface of article from zirconium-niobium alloys is subjected to grinding by abrasive belts. At first step, cold-worked 25 mcm-thick layer is produced at first step to ensure surface roughness of Ra≤0.4 mcm. At first step, grinding is performed by abrasive belts with grain size of 50-100 mcm at the rate of 20-30 m/s and by contact rolls of Shore hardness equal to 60-80. Subsequent machining is carried out by abrasive materials with grain sixe of 10-60 mcm at 10-20 m/s and by contact rolls with 40-60 Sh. Used abrasive belts feature decrease in grain size from 100 mcm to 10 mcm.
EFFECT: higher processing efficiency and surface quality.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR GRINDING OUTER SURFACE OF ARTICLES OF ZIRCONIUM-NIOBIUM ALLOYS | 2004 |
|
RU2281848C2 |
| METHOD OF INCREASING CORROSION RESISTANCE OF STRUCTURAL MATERIALS, METAL ARTICLE WITH INCREASED CORROSION RESISTANCE | 2014 |
|
RU2595184C2 |
| METHOD OF THERMIC WORKING ZIRCONIUM ALLOYS | 1989 |
|
SU1767924A1 |
| ROLLING ROLL GRINDING METHOD (VARIANTS) | 2003 |
|
RU2281849C2 |
| SAPPHIRE SUBSTRATE (VERSIONS) | 2007 |
|
RU2414550C1 |
| METHOD OF MACHINING SAPPHIRE SUBSTRATE | 2007 |
|
RU2422259C2 |
| METHOD OF PROCESSING FRICTION SURFACES OF PARTS FROM ARTIFICIALLY GROWN MONOCRYSTAL BASED ON ALPHA-AlO | 2014 |
|
RU2585885C2 |
| LOT OF SAPPHIRE SUBSTRATES AND METHOD OF ITS PRODUCTION | 2007 |
|
RU2412037C1 |
| METHOD OF DEEP PRINTING FOR PRODUCING ABRASIVE SURFACES WITH APPLIED RELIEF | 1997 |
|
RU2173631C2 |
| METHOD OF ABRASIVE WORKING | 0 |
|
SU1509230A1 |
