FIELD: process engineering.
SUBSTANCE: invention relates to production of multiple hollow metal articles from multiple primary articles, and may be used in production of noise absorbing materials. Each hollow article consists of shell from first primary metal material surround central space with no metal material, and particles based on second metal material, other than the first one, that coat inner and/or outer shell surface. In compliance with proposed method, particles of each article are pre-coated by solder allot and soldered together. Note here that in applying particles on shell outer surface, central space of primary articles is not filled, or organic material core is arranged therein to be removed therefrom by pyrolysis during soldering.
EFFECT: higher efficiency.
16 cl, 3 ex
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