Abstract:
A gas shielding device used during a welding step in a controlled atmosphere of a sound attenuation panel includes an inert gas injector to inject inert gas onto the panel and a housing to receive a welding torch. The inert gas injector comprises an inert gas diffuser mounted on the periphery of the housing for receiving the welding torch.
Abstract:
Method for manufacturing a cell-like honeycomb structure, formed from a plurality of thermoplastic sheets attached to each other, wherein contoured areas are provided in each sheet, and each free sheet is attached to an adjacent sheet of an intermediate block formed by the different sheets previously attached therebetween, welding at least some of the flat areas contacting this free sheet and this adjacent sheet with a laser source along a continuous line parallel to the contour axis.
Abstract:
Provided are a stainless steel foil which has high strength at high temperatures, excellent oxidation resistance at high temperatures, and excellent salt corrosion resistance, and a catalyst carrier for an exhaust gas purifying device which uses the foil. Specifically, a stainless steel foil is characterized by containing, in percent by mass, 0.05% or less of C, 2.0% or less of Si, 1.0% or less of Mn, 0.003% or less of S, 0.05% or less of P, 25.0% to 35.0% of Cr, 0.05% to 0.30% of Ni, 3.0% to 10.0% of Al, 0.10% or less of N, 0.02% or less of Ti, 0.02% or less of Nb, 0.02% or less of Ta, 0.005% to 0.20% of Zr, 0.02% or less of Ce, 0.03% to 0.20% of REM excluding Ce, 0.5% to 6.0% in total of at least one of Mo and W, and the balance being Fe and incidental impurities.
Abstract:
The invention relates to a honeycomb body (1), at least having a housing (2) and a honeycomb structure (3) with a plurality of channels (4), wherein the honeycomb structure (3) is formed by at least one at least partially structured metal layer (5), which forms connecting points (6) that fix the honeycomb structure (3) in place, and wherein a cross-section (8) of the honeycomb structure (3) has radial zones (9, 10, 11) with connecting points (6), wherein in at least one zone (9, 10, 11) furthermore at least 1%, and no more than 20%, of the inner contact points (7) of the at least one at least partially structured metal layer (5) in the cross-section (8) form a connecting point (6), and the connecting points (6) have lengths (13) in the direction of a structure (12), wherein the lengths (13) of the connecting points (6) are different in at least two radial zones (9, 10, 11).
Abstract:
Method for manufacturing a cell-like honeycomb structure, formed from a plurality of thermoplastic sheets attached to each other, wherein contoured areas are provided in each sheet, and each free sheet is attached to an adjacent sheet of an intermediate block formed by the different sheets previously attached therebetween, welding at least some of the flat areas contacting this free sheet and this adjacent sheet with a laser source along a continuous line parallel to the contour axis.
Abstract:
A joining jig 5 is constituted of a pair of flat-plate sandwiching portions 17, 18 including sandwiching faces 15 which sandwich therebetween a platy member laminate 4 prepared by laminating two platy members 2, 3 with providing a solder on a joined face between the platy members. The joining jig has a plurality of vapor inflow ports provided in the sandwiching face 15 so that surplus solder vapor on the joined face flows into the vapor inflow ports in a case where the platy member laminate 4 is heated while sandwiching the platy member laminate between the pair; vapor flow paths provided so that the vapor flow paths communicate with the vapor inflow ports; and vapor discharge ports 42 provided in the side surface of the joining jig so that the vapor discharge ports communicate with the vapor flow paths to discharge the vapor of the solder to the outside.
Abstract:
Honeycomb (1) for an exhaust treatment unit (2) having at least one honeycomb structure (3) and a least one housing (4), which at least partially surrounds the at least one honeycomb structure (3), at least one region (5) between the honeycomb structure (3) and the housing (4) being formed with a brazed joint (6), wherein at least two separate means (7, 9) for delimiting the brazed joint (6) are provided. Furthermore, a method for producing a corresponding honeycomb is also proposed.
Abstract:
A diffusion joining metal carrier formed by assembling a honeycomb body, constituted by alternately rolling or laminating wavy foil strips made of heat-resisting stainless steel containing aluminum and flat foil strips made of stainless steel, into a metal outer tube and integrating the assembly by diffusion joining, wherein the surface roughness of the foil strips after the diffusion joining is 0.001 to 2.0 νm in terms of center line average roughness Ra and opposite ends in the lengthwise direction of the diffusion joint portion are free from sintering bridge. A method of manufacturing the metal carrier within a condition range in which μb represented by μb=6.8x10?-12xδf-1xF1/2xRa-1/2xT1/4¿xexp(15000/T)xb1/2 is not less than 8 and not more than 20 under the condition, 7.52x109xexp(-35000/T)≥8xPout, provided that a foil thickness is δf(m), average foil surface roughness Ra(m), back tension when rolled up F(kgf), contact width between flat foil and wavy foil b(m), heat treating temperature T(K) and vacuum degree Pout (Pa).