Document Type and Number:
Japanese Patent JPH07504617
Kind Code:
A
Abstract:
A method for applying brazing material to an approximately metallic honeycomb body being wound, stratified or intertwined from at least partly structured sheet-metal layers, for brazing at least in partial regions, includes applying a thin film of a rolling oil to at least the structured sheet-metal layer, if such a film is not already present from production process; heat-treating the oil film to remove volatile components; placing regions of the sheet-metal layers to be provided with brazing material into contact with an aqueous solution of a surfactant; and putting the honeycomb bodies produced from the sheet-metal layers into contact with powdered brazing material adhering to locations where residues of the oil and the surfactant have come together. An apparatus for applying the brazing material to the honeycomb includes a heating station for passing a flow of hot air through a honeycomb body and heat-treating an oil film at a temperature of approximately 150 DEG to 250 DEG C. and preferably 200 DEG to 230 DEG C.; an application station for applying an aqueous solution of a surfactant onto at least one end surface of the honeycomb body with an absorbent material; a drying station for drying the honeycomb body in an airflow at approximately 100 DEG to 160 DEG C. and preferably 130 DEG to 150 DEG C.; and a brazing material application station for passing a flow of a gas through an accumulation of powdered brazing material from below to form a fluidized bed.
Application Number:
JP50107594A
Publication Date:
May 25, 1995
Filing Date:
June 02, 1993
Export Citation:
International Classes:
B23K1/00; B23K1/20; B23K3/06; B23K31/02; B23K35/14; F01N3/28; F28D19/04; (IPC1-7): B23K1/00; B23K3/06
Domestic Patent References:
| JPH0377777A | 1991-04-03 |