FIELD: metallurgy, possibly manufacture of tubes of Al-Zn-Mg-Cu alloys used in important -designation articles, for example in reactors of gas centrifugal apparatuses.
SUBSTANCE: method comprises steps of making ingots from aluminum base alloy; subjecting ingots to homogenization at temperature 440-460 C and cutting them by measured-length blanks; after piercing preliminarily heated measured-length blanks mechanically working their outer surfaces and producing tubes by backward extrusion; performing backward extrusion process at temperature 350 - 410 C at metal yielding rate 1.2 - 2.5 m/min; then subjecting tubes to quenching, straightening and aging. Waste quantity in content of charge for preparing above mentioned alloy may consist 40 - 70 %. Quenching is realized at temperature 465 - 475 C. Straightening is realized at residual deformation degree 1.5 - 2.5% and aging is performed at temperature 130 - 150 C. It provides enhanced plastic characteristics of ready products.
EFFECT: high strength properties of articles, enhanced efficiency of process.
3 cl,1 tbl, 1 ex
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| PROCEDURE FOR FABRICATING PIPES OUT OF ALUMINIUM ALLOYS | 2009 |
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| LARGE-DIAMETER ACCURATE TUBE OF ALUMINUM ALLOYS PRODUCING METHOD AND TUBE FORMED BY SUCH METHOD | 2005 |
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| METHOD OF PRODUCING THIN-WALL TUBES OF HIGH-ALLOY ALUMINIUM Al-Zn-Mg-Cu-SYSTEM ALLOYS DOPED WITH SCANDIUM AND ZIRCONIUM | 2012 |
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| METHOD OF MAKING PRESSED PROFILES FROM HIGH-STRENGTH DEFORMABLE ALUMINUM ALLOYS OF THE Al-Zn-Mg-Cu SYSTEM WITH ADDITIVES OF TRANSITION METALS | 2019 |
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RU2733233C1 |
| SEMI-CONTINUOUS EXTRUSION METHOD FOR PRODUCING Al-Mg-Si ALLOY BLANKS | 2004 |
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RU2277451C1 |
| PRODUCTION OF COMPACTED ARTICLES FROM 6000-SERIES ALUMINIUM ALLOY | 2013 |
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RU2542183C2 |
| METHOD OF MAKING TUBES FROM Al-Zn-Mg-Cu-SYSTEM-BASED SUPERHARD ALUMINIUM ALLOYS | 2012 |
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RU2480300C1 |
| PROCEDURE FOR PRODUCTION OF ITEM OUT OF HIGH-STRENGTH ALUMINIUM ALLOY | 2008 |
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RU2396367C2 |
| METHOD OF THERMOMECHANICAL PROCESSING OF SEMI-FINISHED FRAGMENTS FROM ALUMINIUM ALLOYS OF Al-Cu, Al-Cu-Mg AND Al-Cu-Mn-Mg SYSTEMS FOR OBTAINING PRODUCTS WITH HIGH STRENGTH AND ACCEPTABLE PLASTICITY | 2015 |
|
RU2618593C1 |
| ALLOY BASED ON ALUMINUM, ARTICLE MADE FROM IT AND METHOD OF OBTAINING ARTICLE | 2019 |
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RU2717437C1 |
