Abstract:
PURPOSE: A friction stir welded assembly and a method for friction stir welding the assembly are provided to make an assembly resist against the force which is applied in welding and to prevent the displacement of the components of the assembly during stir welding. CONSTITUTION: A friction stir welded assembly comprises a first member(20) and a second member(22). The first member has a seat part(24), a rim part(26) and many protrusions(28). The seat part has a first surface(30) and a second surface(32). The protrusions form grooves defined partially by the first surface. The second member has many ribs(38), a seat part(40) and a rim part(42). The seat part of the second member has a first surface(44) and a second surface(46). The surfaces facing the protrusions act as retaining support surfaces engaged with the ribs. A front end(54) of the second member is placed between the retaining support faces of the first member. The second member is stir-welded with the first member by fixing a stir welding tool on the second surface of the first member. After the first member is assembled with the second member, the front end of the second member is prevented from moving.
Abstract:
PURPOSE: A joint member for a hollow frame member is provided to finely weld the hollow frame member from the one side of the hollow frame member without regard to the dimension accuracy. CONSTITUTION: A friction stir welding is performed in faceplates(12b,22b) of hollow frame members(10,20). A joint member(30) is put thereon and the one end of the joint member is faced to the end of a faceplate(11) of the hollow frame member. The friction stir welding is performed in an overlapped portion between the other end of the joint member and the hollow frame member. The joint member and a faceplate(21) of the hollow frame member(20) are welded as occasion demands. Thereby, the hollow frame members are welded finely without regard to the dimension accuracy.
Abstract:
용접구역을 가진 다양한 롤 또는 압출 프로파일(1c,1d)이, 그들 사이에 전단력을 전달하기에 충분한 세기로 상기 외부 금속평판(21)에 접합되는 엘라스토머 코어(22)와 제1 및 제2외부 금속평판(21)을 포함하는 구조적 샌드위치 평판부재와 함께 접속하는데 사용된다.
Abstract:
PURPOSE: To provide a friction stir welding method capable of attaining a lightweight, satisfactory joining. CONSTITUTION: An end of a side wall 11 of a hollow shape 10 is butt-joined with an end of a side wall 21 of an another hollow shape 20. The end of the side wall 21 overlaps with a protrusion 15. A smaller part 52 in diameter of a rotating tool 50 is inserted into the portion to be butt joined, the smaller part 52 being rotated clockwise seen from the side of a larger part 51 in diameter, and traveled along the portion to be butt joined in a direction from the front side of the Fig. 1 to the depth. On the Fig. 1, the right-hand side of the axis of the rotating tool has a higher pressure in liquidized metal. As concerns wall thickness measured from the tip of the smaller part 51 to hollow parts 10a, 10b, the right-hand side is larger. Thus as the right-hand side where the higher pressure is produced has the larger wall thickness, the liquidized metal will not flow out to the hollow part 10a. A thinner wall formed in the left-hand side contributes to reduce the weight.
Abstract:
PURPOSE: A friction stir bonding method of tubular portion such as a hollow-shaped material and the like is provided which does not deform during friction stir bonding. CONSTITUTION: The friction stir bonding method comprises butting an end portion of a face plate on one side of a hollow-shaped material against an end portion of a first plate; and using a rotary tool having a large-diameter portion on either end of a small-diameter portion, rotating and moving said rotary tool along said butted region while interposing said butted region between said two large-diameter portions of said rotary tool. The hollow-shaped material for friction stir bonding is characterized in that said hollow-shaped material comprises a first face plate, a second face plate substantially parallel to said first face plate, and a plural connecting plates connecting said first face plate and said second face plate; an end portion of said first face plate and an end portion of said second face plate is protruded in the width direction of said hollow-shaped material compared to the connecting region of said connecting plate with said first face plate and said second face plate; an end surface of said protruded end portion of said first face plate includes a concave portion or a convex portion; and an end surface of said protruded end portion of said second face plate on the side facing said concave portion or said convex portion includes a concave portion or a convex portion.
Abstract:
Freeform, additive manufacturing equipment, processes and products, including residential, commercial and other buildings. A movable extruder places extrudate that solidifies in open space to create “scaffolding” or “skeletons” of buildings and other products. Elongated extrudate elements are fused to each other or connected by other means to form a cellular structure. Filler material such as polymeric insulating foam may simultaneously or thereafter be placed within the cellular structure to contribute desired strength, rigidity, insulative, barrier or other properties. Finish materials may also be applied.
Abstract:
A method of producing a plate-like construction having a double-wall structure and its use. According to the present invention, several elongated profiles which have essentially straight central axes are arranged against each other in such a way that adjacent hollow profiles abut each other and together form, in general terms, a flat stack having two opposite sides. The hollow profiles are welded together in order to join them with welded seams, in which case the welding is essentially carried out simultaneously from both sides of the stack. Besides good flexural strength and the opportunity to recycle, thermoplastic plates which are produced by means of the present method exhibit resistance to corrosion, decay and mould.