| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to metallurgy, particularly, to production of armour plates for light armour combat vehicles, aircraft and individual protection means. Proposed method comprises martensite steel smelting, pouring into moulds, cooling of the melt, heating of ingots and reducing them over thickness in multipass rolling in crosswise and lengthwise directions to sheets, quenching and tempering. Melt is cooled in the mould and subjected to isostatic pressure of 30-90 MN/mto facilitate formation of microcrystalline isotropic steel structure. Multipass rolling at the ratio between total reductions in lengthwise and crosswise directions of 0.8-1.2 facilitates mechanical grinding and elimination of grain elongation, preservation of isotropic microstructure and mechanical properties and higher viscoplasticity.EFFECT: higher durability of armour sheet.1 tbl, 1 ex |
