摘要:
An additive manufacturing system includes an additive manufacturing tool configured to supply a plurality of droplets to a part, a temperature control device configured to control a temperature of the part, and a controller configured to control the composition, formation, and application of each droplet to the plurality of droplets to the part independent from control of the temperature of the part via the temperature control device. The plurality of droplets is configured to build up the part. Each droplet of the plurality of droplets includes at least one metallic anchoring material.
摘要:
The invention relates to a method for joining materials (1, 2) which are of different types and cannot be welded directly to one another, in which method by thermal spraying, in particular by cold gas spraying, a spray coating (3) is produced which at least partially covers the surface of a first workpiece (1) made of a first material (1), wherein the type of spray coating (3) is selected such that the spray coating forms a substance-to-substance bond with the first material (1) by means of the physical forces and chemical operations during application of the spray coating (3), characterized in that for joining the two workpieces (1, 2) the second material (2) is welded to the spray coating (3). The invention further relates to a welded joint piece which is produced by the method according to the invention.
摘要:
A process and apparatus are disclosed for the deposition of a layer of a first material onto a substrate of a second material. Powder particles of the first material are entrained into a carrier gas flow to form a powder beam directed to impinge on the substrate. This defines a powder beam footprint region at the substrate. The powder beam and the substrate are moved relative to each other to move the powder beam footprint relative to the substrate, thereby to deposit the layer of the first material. A laser is operated to cause direct, local heating of at least one of a forward substrate region and a powder beam footprint region. The laser is controlled to provide a spatial temperature distribution at the powder footprint region of the substrate in which the local temperature of the substrate is in the range 0.5Ts to less than Ts in a volume from the surface of the substrate at least up to a depth of 0.2 mm from the surface of the substrate and not more than 0.25Ts at a depth of 1 mm from the surface of the substrate, wherein Ts is the solidus temperature (in K) of the second material.
摘要:
A bi-metal medical guidewire with a core wire having a stainless steel proximal section and Nitinol distal section offers performance enhancements compared to guidewires made from either alloy alone. A solid-state, frictional welding or frictional joining process for Nitinol and stainless steel wires ranging in diameter from 0.013″ to 0.020″, without the need for tertiary metals, adhesive or ferrules is disclosed. The resulting frictional weld joint strength is approximately 80% of the tensile strength of the raw Nitinol wire with excellent bending properties.
摘要:
Funktionsbauteile insbesondere für messtechnische Anwendungen, wie Druckmittler, weisen einen metallischen Grundkörper 8 und eine Metallfolie aus metallischem Sonderwerkstoff auf, wobei die Metallfolie an einer Fügefläche 13 des Grundkörpers 8 angeschweißt ist. Um die Haltbarkeit der angeschweißten Metallfolie zu erhöhen, ist erfindungsgemäß vorgesehen, dass die Metallfolie mittels eines Faserlasers 2 mit einem kontinuierlichen Laserstrahl 18 derart angeschweißt ist, dass die Legierung einer Schweißnaht im Kontaktbereich zwischen dem Grundkörper 8 und der Metallfolie aus einer lokalen Mischgefügezone besteht, in der sich die geschmolzenen Werkstoffe des Grundkörpers 8 und der Metallfolie vermischen, und die Legierung der Schweißnaht im Bereich einer bzgl. des Grundkörpers 8 außen liegenden Oberfläche der Metallfolie keine Bestandteile, insbesondere keine Eisenbestandteile, des Materials des Grundkörpers 8 enthält.
摘要:
Disclosed herein are bonded structures and methods of forming the same. One embodiment of a bonded structure comprises first and second metallic layers and a bonding interface between the first and second metallic layers formed by diffusion and comprising a layer of at least one intermetallic compound. The intermetallic compound layer is formed in an area 52% or greater of an area of the bonding interface and has a thickness of 0.5 to 3.2 μm.
摘要:
An additive manufacturing system includes an additive manufacturing tool configured to supply a plurality of droplets to a part, a temperature control device configured to control a temperature of the part, and a controller configured to control the composition, formation, and application of each droplet to the plurality of droplets to the part independent from control of the temperature of the part via the temperature control device. The plurality of droplets is configured to build up the part. Each droplet of the plurality of droplets includes at least one metallic anchoring material.
摘要:
Funktionsbauteile insbesondere für messtechnische Anwendungen, wie Druckmittler, weisen einen metallischen Grundkörper 8 und eine Metallfolie aus metallischem Sonderwerkstoff auf, wobei die Metallfolie an einer Fügefläche 13 des Grundkörpers 8 angeschweißt ist. Um die Haltbarkeit der angeschweißten Metallfolie zu erhöhen, ist erfindungsgemäß vorgesehen, dass die Metallfolie mittels eines Faserlasers 2 mit einem kontinuierlichen Laserstrahl 18 derart angeschweißt ist, dass die Legierung einer Schweißnaht im Kontaktbereich zwischen dem Grundkörper 8 und der Metallfolie aus einer lokalen Mischgefügezone besteht, in der sich die geschmolzenen Werkstoffe des Grundkörpers 8 und der Metallfolie vermischen, und die Legierung der Schweißnaht im Bereich einer bzgl. des Grundkörpers 8 außen liegenden Oberfläche der Metallfolie keine Bestandteile, insbesondere keine Eisenbestandteile, des Materials des Grundkörpers 8 enthält.
摘要:
Disclosed are methods and structures for joining metallic members. A welding material can be used between two metallic members that comprise different metals. The different metals can normally form brittle intermetallic compounds when welded to one another, and the welding material can inhibit the formation of the brittle intermetallic compounds.