The present disclosure relates to an automatic forming machine for plant growth supports, comprising a ring rolling system with a ring rolling unit, a mold system with a mold unit, and a welding system, which are all disposed on a machine frame, wherein the ring rolling unit can roll a metal wire and make the metal wire be formed into a ring with an opening in the mold unit; the mold system is for carrying the ring and making two free ends of the ring with an opening aligned or alternately overlap with each other; the welding system welds can weld the opening of the ring carried by the mold unit, causing the ring to become a closed ring. The present disclosure has a high automatic degree and can reduce the production time and labor cost.

According to aspects of the present disclosure, a method includes selecting a faying surface of a first metal substrate, placing a reaction material on the faying surface, and attaching, prior to a second metal substrate being adjacent the first metal substrate, the reaction material to the faying surface via ultrasonic welding. The reaction material is configured to form a metallurgical joint between the faying surface and the second metal substrate adjacent the first metal substrate.

A method and apparatus for joining using friction and current, wherein the friction/current joining apparatus includes a friction device, a forging device, an electrical current source, and a programmable controller, as well as workpiece holders for the workpieces to be joined. The friction/current joining apparatus is controlled such that, in a contacting phase, the workpieces are initially moved along a process axis, and their mutually facing joining surfaces oriented transverse to a common process axis are brought into contact. In a grinding phase, while subjected to contact pressure by mutual relative movement, the joining surfaces, are ground together and made smooth. At the end of the grinding phase, the relative frictional movement is permanently stopped and, in a forging phase following the grinding phase, the workpieces are pressed together, plasticized, and joined while subjected to contact pressure on their contacting joining surfaces along the process axis, and subjected to conductive heating with electrical current.

A method for manufacturing an integrated member and an integrated member manufactured by the method which can improve the joining strength and reduce the manufacturing cost. A method for manufacturing an integrated member by welding a first member formed of aluminum alloy material and a second member formed of ferrous-based material characterized in that the first member contains a predetermined amount of silicon and has a thickness larger than that of the second member. The second member can be pressed against the first member along the thickness direction, and by electrically energizing the pressed-in portion during the pressing period, electric resistance welding can be used. The pressing-in amount is set to a value larger than the thickness of the second member and less than that of the first member. The overlapping margin of the first and second members is set to a value of 0.5 mm or more.

A method for manufacturing an integrated member and an integrated member manufactured by the method which can improve the joining strength and reduce the manufacturing cost. A method for manufacturing an integrated member by welding a first member formed of aluminum alloy material and a second member formed of ferrous-based material characterized in that the first member contains a predetermined amount of silicon and has a thickness larger than that of the second member. The second member can be pressed against the first member along the thickness direction, and by electrically energizing the pressed-in portion during the pressing period, electric resistance welding can be used. The pressing-in amount is set to a value larger than the thickness of the second member and less than that of the first member. The overlapping margin of the first and second members is set to a value of 0.5 mm or more.

A joining device for connecting a metal member and a resign member with a metal fastener including a penetrating tip comprises: a cylindrical nosepiece; a high frequency electromagnetic induction coil around the nosepiece; an electrode punch for pressing the fastener into the resign member; a electronic chopper for producing a high frequency current; a high frequency power supply for supplying an induction current to the induction coil; a welding power supply for supplying a welding current between the electrode punch and the metal member; a contact detector for sensing when the fastener tip touches the metal member; and a switching unit for automatically switching from the induction current to the welding current when the contact detector senses that the tip has contacted the metal member.

A joining device for connecting a metal member and a resign member with a metal fastener including a penetrating tip comprises: a cylindrical nosepiece; a high frequency electromagnetic induction coil around the nosepiece; an electrode punch for pressing the fastener into the resign member; a electronic chopper for producing a high frequency current; a high frequency power supply for supplying an induction current to the induction coil; a welding power supply for supplying a welding current between the electrode punch and the metal member; a contact detector for sensing when the fastener tip touches the metal member; and a switching unit for automatically switching from the induction current to the welding current when the contact detector senses that the tip has contacted the metal member.

Welding machine for edge-side connection at the edge of overlapping material webs, wherein the materials are connectable to one another under the effect of heat and subsequent pressure, with a chassis on which at least guide rollers, a heating device and at least one pressure roller are arranged. The heating device has a cantilevered contact heating element that can be inserted laterally between the edges of the material webs, wherein the chassis is driven by an electric motor which is arranged on a longitudinal leg of the chassis. The electric motor according to the invention is formed as a brushless DC motor and the reduction gear as a planetary gear, which are united by a drum drive motor. In this case, the direct current motor is preferably a disk rotor motor. The chassis has a lateral leg which is adjustable perpendicularly to the working direction relative to the longitudinal leg.

Welding machine for edge-side connection at the edge of overlapping material webs, wherein the materials are connectable to one another under the effect of heat and subsequent pressure, with a chassis on which at least guide rollers, a heating device and at least one pressure roller are arranged. The heating device has a cantilevered contact heating element that can be inserted laterally between the edges of the material webs, wherein the chassis is driven by an electric motor which is arranged on a longitudinal leg of the chassis. The electric motor according to the invention is formed as a brushless DC motor and the reduction gear as a planetary gear, which are united by a drum drive motor. In this case, the direct current motor is preferably a disk rotor motor. The chassis has a lateral leg which is adjustable perpendicularly to the working direction relative to the longitudinal leg.

A method of repairing a blisk having a hub with circumferentially spaced blades. The method can include removing a portion of a blade and replacing the portion with a replacement piece. The method can further include welding the replacement portion to the blade. The method can further include at least one of inspecting the weld after the completion of the weld and prior to heat treatment, dimensionally inspecting the replacement piece after machining, peening the blade, and surface finishing the replacement piece.