96 results about "Forge welding" patented technology

A composite turbine disc includes a high nickel rim section and a steel bore section. The rim section is formed from a high nickel alloy which provides a higher melting point as compared to the material used for the bore section. A plating or forged welding enhanced agent layer is disposed between the bore section and rim section. Composite disc can be formed by forging the rim and bore material together, or by welding the rim and bore material together.

The invention discloses a forming method for a sandglass-shaped metal structure. The forming method is characterized by comprising the following steps: preparing a plurality of elements; stacking theplurality of elements together to form a shape having a cross section area which is gradually increased from the middle to the two ends; welding and packaging the plurality of elements which are stacked together into a preform; and welding interferences among the plurality of elements together through forge welding to prepare a blank from the preform. According to the forming method disclosed by the invention, a plurality of metal blanks with smaller sizes are used as structure elements for preparing a large metal blank.

The invention provides a vibrating casting and forging composite forming method for aluminum alloy forgings and belongs to an aluminum alloy forging machining method. The vibrating casting and forging composite forming method for the aluminum alloy forgings solves the problems that by means of an existing casting and forging composite forming technology, the forging penetration is poor and the microdefect compaction effect is poor due to one-time compaction in the forging process, so that the forging defects are eliminated, and the forging performance is improved. The vibrating casting and forging composite forming method comprises the steps of alloy smelting, extrusion casting and vibrating die forging. By the adoption of the vibrating casting and forging composite forming method, the advantage that the forming performance of an aluminum alloy in the molten state is good and the advantage that through vibrating die casting, grains can be refined effectively and the density of the forgings is increased are combined; microdefect compaction during the casting process is promoted through high-pressure extrusion casting, the impact heating and stress wave superposition effect is generated through high-frequency vibration and compaction, the forging penetration is improved, the compaction and forge welding of the defects during the forging process are promoted, and the mechanical property is improved; and the vibrating casting and forging composite forming method has the beneficial effects that the technological process is short, the material utilization rate is high, energy is saved and the equipment investment is small and is especially suitable for forming of the complex aluminum alloy forgings of automotive steering knuckle control arms and the like.

A method for interconnecting tubulars by forge welding involves arranging the tubular ends that are to be interconnected at a distance, up to a few millimeters from each other in a shield gas chamber, into which a reducing non-explosive flushing fluid mixture (e.g. N2+H2) is injected; heating each tubular end within the space by means of at least three electrodes that are pressed at circumferentially spaced intervals against the wall of each tubular, adjacent to the tubular end such that a high frequency electrical current is transmitted in a substantially circumferential direction through the tubular segments between the electrodes; and moving the thus uniformly heated tubular ends towards each other until a forge weld is formed between the heated tubular ends.

A system and method for computing the parameters of a forge welding machine for the forge welding of one or more materials is provided. A computer program executes a self-tuning routine to compute the operating frequency and operating power setting for the forge welding machine in response to an inputted width of the heat affected zone and an inputted weld temperature.

Cutting portion regions of replaceable blades that extrude outward in a radial direction at a plurality of portions in a peripheral direction of an outer periphery of a body of a finger joint cutter are arranged in that, as for a cutting portion material that comprises cutting edge, tip end cutting portions are formed of a steel material of high hardness and base portion side cutting portions, which are the remaining portions, are formed of a steel material that exhibits a higher toughness than that of the tip end cutting portions. It is possible to improve the wear resistance through the tip end cutting portions and to improve the chipping resistance by the base portion side cutting portions. The steel material of high hardness comprising the tip end cutting portions and the steel material of high toughness comprising the base portion side cutting portions are successively joined through forge welding.

The present application relates to an apparatus for and a method of forge welding elongate articles (1, 2), such as tubes, together. In addition to electrode (12, 13) assemblies (9) for heating the article (1, 2) ends with high frequency resistive heating, the apparatus includes a coil (3) for induction heating the articles (1, 2) before or after welding, as well as means for cooling the welding seam.

The present invention discloses a forge welding process of large-size square-ring-shaped thin-walled structure component. Said forge welding process includes the following steps: (1), forging raw material to obtain blank; (2), die forging-forming; (3) heat bending-forming by means of die; (4) making group welding, before welding making preheating treatment, adopting welding mould and adopting mixed gas shielded welding, after welding making heat-insulating treatment; and (5) making thermal refining treatment.