Abstract:
Verfahren zur Herstellung eines Bauteils aus duktilem Gusseisen, das die folgenden Schritte aufweist; Bereitstellen einer fließfähigen Gusseisenmischung, Einbringen der fließfähigen Gusseisenmischung in eine Kokille, Erstarrung der Gusseisenmischung in der Kokille, Öffnen der Kokille und Entnahme des Bauteils aus Gusseisen, wobei die Gusseisenmischung einen Mindestgehalt von 3,0 Gew.-% Silicium aufweist. Weiterhin umfasst die Erfindung ein nach diesem Verfahren hergestelltes Bauteil aus duktilem Gusseisen.
Abstract:
Methods of manufacturing engines are disclosed. A single-piece core is printed based on specifications in a three-dimensional print file. The single-piece core is then used in a casting process to create an engine. The three-dimensional print file includes specifications corresponding to each hollow interior feature of an engine. The three-dimensional print file may include specifications for one or more accessory features, and the single-piece core may be printed to include the one or more accessory features.
Abstract:
The subject of the invention is a process for the production of at least partly thin-walled and aluminium castings with sand moulding technology by gravity casting, which allows producing casts with 100 times or favourably 200-400 times larger overall dimensions in case of 1-3 mm wall thickness. The main idea of the process is that sand mould containing mould cavity is provided, melt of aluminium content is produced, the melt is introduced into the mould cavity at several points through a gating system of narrowing cross section. A further subject of the invention is a sand mould fitted with a gating system to produce at least partly thin-walled castings with sand moulding technology, by gravity casting. The wall thickness of thin-walled segments is 1-3 mm and the largest dimension is more than a 100 but favourably at least 200-400 multiple of the wall thickness. The main idea behind the sand mould with a gating system is that it contains a mould cavity allowing the production of at least partly thin-walled castings, and is equipped with a gating system, which is composed of at least two sprues and one ingate to each having a porthole into the mould cavity and in liquid contact with the sprues.
Abstract:
A method for manufacturing a turbine wheel comprising casting the turbine wheel from an austenitic nickel-chromium-based superalloy, subjecting the cast turbine wheel to hot isostatic pressing and then subjecting a surface of the hot isostatically pressed turbine wheel to plastic deformation, wherein said hot isostatic pressing is effected at a pressure of 98 to 200 MPa and a temperature of 1160 to 1220 °C for a time period of 225 to 300 minutes. There is further described a hot isostatically pressed cast turbine wheel manufactured from an austenitic nickel-chromium-based superalloy, the turbine wheel having a plastically deformed surface; and a turbocharger incorporating such a turbine wheel.
Abstract:
A brake caliper adapted for use in a vehicle disc brake assembly and method and apparatus for producing the same. The apparatus for producing the brake caliper comprises a mold member and a core member. The mold member has two mold sections meeting at a vertical interface, the first mold section having an extension from the vertical interface into the second mold section to form an integrally cast lug on the brake caliper. The core member has three extensions operative to form three integrally cast locating surfaces on the cast brake caliper, the extensions defining datum surfaces for subsequent machining of the cast brake caliper to predetermined tolerances using the three locating surfaces as the datum surfaces.
Abstract:
A method for manufacturing railcar yokes includes providing a cope mold portion having internal walls defining at least in part perimeter boundaries of at least two upper yoke mold cavities. The method further comprises providing a drag mold portion having internal walls defining at least in part perimeter boundaries of at least two lower yoke mold cavities. A slab core is positioned within the drag mold portion. The slab core is configured to define at least in part perimeter boundaries of the at least two upper yoke mold cavities and the at least two lower yoke mold cavities. The cope and drag mold portions are closed with the slab core therebetween. The method also comprises at least partially filling the at least two upper and at least two lower yoke mold cavities with a molten alloy to form a first, second, third, and fourth yoke.
Abstract:
본 발명은 우수한 내식성을 얻을 수 있는 다이캐스팅용 알루미늄 합금에 관한 것으로서, 본 발명의 합금은 마그네슘(Mg) 6 내지 8.5 중량 %, 규소(Si) 4 내지 6 중량 %, 철(Fe) 0.4 내지 0.8 중량%, 망간(Mn) 0.2 내지 0.5 중량%, 구리(Cu) 0.01 내지 0.1 중량%, 티타늄(Ti) 0.05 내지 0.15 중량%, 및 잔량의 알루미늄(AI)을 포함하여 구성됨으로써 경량화와 고내식성을 요구하는 전자 또는 통신용 부품 제작을 위한 다이캐스팅용 소재로 사용할 수 있다.
Abstract:
The present invention is related to a method for manufacturing a water cooling system (20) inside a casted cylinder head (10), the water cooling system (20) comprising an upper water jacket (21) and a lower water jacket (22) and wherein a transition channel (23) is located between the upper water jacket (21) and the lower water jacket (22). Further, the invention is related to a water cooling system (20) inside a casted cylinder head (10), comprising an upper water jacket (21) and a lower water jacket (22) wherein the upper water jacket (21) and the lower water jacket (22) are fluidly connected by at least one transition channel (23).