FIELD: process engineering.
SUBSTANCE: invention relates to production of seamless steel tube, namely, to reusable piercing and rolling mandrel, to method of its reconditioning and process line to this end. Mandrel incorporates film consisting of oxides and Fe made on mandrel main metal surface. Proposed method comprises shot-blasting the mandrel surface for film removal and electric arc evaporation of film consisting of oxides and Fe. Evaporation is performed with Fe-based wire.
EFFECT: higher efficiency.
11 cl, 18 dwg, 5 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| SYSTEM OF EQUIPMENT FOR PIERCING AND ROLLING MANDREL PRODUCTION | 2013 |
|
RU2600771C2 |
| METHOD OF MAKING MANDREL FOR PIERCING ROLLING | 2013 |
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RU2598414C2 |
| METHOD OF MAKING MANDREL FOR ROLLING WITH PIERCING | 2013 |
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RU2588937C2 |
| METHOD OF MAKING MANDREL FOR PIERCING-ROLLING | 2013 |
|
RU2593884C9 |
| PIERCING MANDREL AND METHOD OF ITS MAKING | 2013 |
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RU2584620C1 |
| METHOD FOR RESTORING OUTER SURFACE OF PIERCING MILL MANDRELS AND STAMP FOR ITS IMPLEMENTATION | 2023 |
|
RU2806565C1 |
| MANDREL USED IN PIERCING MILL | 2013 |
|
RU2592332C2 |
| METHOD OF CHROME-CONTAINING STEEL HOT WORKING | 2004 |
|
RU2336133C1 |
| COOLED PIERCING MANDREL | 2019 |
|
RU2717422C1 |
