LAMINATE PANEL MANUFACTURING METHOD Russian patent published in 2005 - IPC

FIELD: plastic working of metals, possibly manufacture of laminate articles such as sleeves, namely for fuel elements of nuclear reactors.

SUBSTANCE: method comprises steps of assembling blank of core and blank of envelope; applying lubricant onto surface of built-up blank; sizing built-up blank by deforming its pipe branches at necking walls; beading; welding beaded end of built-up blank and subjecting it to thermal diffusion treatment; after beading drying built-up blank while selecting minimum temperature of drying no less than ignition temperature of the most viscous oil in composition of lubricant used at sizing blank and selecting maximum temperature of drying no more than recrystallization temperature of material of envelope of laminate article.

EFFECT: lowered degree of gas saturation of articles, reduced number of articles rejected by swollen zones due to providing evaporation of lubricant penetrated in built-up blank and separation of gaseous evaporation products to outside.

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