Abstract:
PROBLEM TO BE SOLVED: To provide an attaining method of a welding joint between two parts included in a cutting tool such as a connecting part and a drill shank; and the cutting tool. SOLUTION: A shim 14 is used for a cap opening on the outer periphery between the parts 1 and 8. The shim is formed in a predetermined shape coincident with the cap. A material is melted and integrally welded in a boundary area between contact surfaces between the respective two parts and the shim by a laser beam 22 turned to the outer periphery of the shim. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Instruments, insbesondere eines Dentalinstruments oder eines medizinischen Instruments, bei welchem von einem Werkstück ein konturgebender Materialabtrag mittels eines Lasers erfolgt.
Abstract:
In one embodiment, a carbide-containing article includes a carbide body (54) with an attached superabrasive layer (52). A braze metal coating (56) is attached to a surface the carbide substrate (54). The coating (56) primarily is made of particles of a metal having a melting point of less than 1200 0C, the particles having a size of less than 0.1 mm. In another embodiment, a process for applying a braze metal coating (56) to a carbide body (54) of a superabrasive (52) or other article includes depositing finely divided particles of a low melting point metal onto the carbide body by spraying the particles and gas onto the body at a velocity that is between 500 km/sec and 2 km/sec, with volumetric delivery of the particles being less than 50 grams per minute.
Abstract:
Methods for welding a particle-matrix composite body (120) to another body (154) and repairing particle-matrix composite bodies (120) are disclosed. Additionally, earth-boring tools (110) having a joint that includes an overlapping root portion and a weld groove having a face portion with a first bevel portion and a second bevel portion are disclosed. In some embodiments, a particle-matrix bit body (120) of an earth-boring tool (100) may be repaired by removing a damaged portion, heating the particle-matrix composite bit body (120), and forming a built-up metallic structure thereon. In other embodiments, a particle-matrix composite body (120) may be welded to a metallic body (154) by forming a joint, heating the particle-matrix composite body (120), melting a metallic filler material forming a weld bead and cooling the welded particle-matrix composite body (120), metallic filler material and metallic body (154) at a controlled rate.
Abstract:
Изобретение относится к сварке и наплавке и может найти применение при восстановлении изношенных частей деталей типа тел вращения, в частности бурильных труб. Устройство для восстановления наплавной бурильной трубы (1), содержит узлы хранения, подачи и перегрузки трубы (1), опоры для размещения трубы (1), привод ее вращения 6, узел подачи воздуха 29 внутрь трубы (1), кольца 30 для охлаждения торцов трубы (1) и удержания флюса (24), приспособления для термостатирования мест наплавки, размещенную в наплавочной головке (17) группу электродов (19) для наплавки ниппельной части трубы (10), запитанную от одного источника электрического тока (15), и группу электродов (19) для наплавки муфтовой части трубы (9), размещенную в другой наплавочной головке и запитанную от второго источника электрического тока, при этом' каждая наплавочная головка установлена с возможностью линейного и углового отклонения от «зeнитa» и продольного горизонтального и вертикального ее перемещения и связана с механизмом подачи (18) электродов (19) в наплавочную головку (17) и флюсобункером (23), опоры для размещения трубы (1) выполнены токопроводящими с подключением «плюca» на трубу (1), а «минyca» - на электроды 19, в каждой наплавочной головке электроды (19) установлены в ряд параллельно образующей трубы (1) с возможностью изменения расстояния между ними, а узел продольного перемещения электродов (19) выполнен с возможностью одновременной подачи флюса (24) в зону наплавки.
Abstract:
Disclosed is a hardfacing alloy capable of withstanding service abrasion of the order of silicious earth particles and weldable on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfacing alloy has a low coefficient of friction resulting from excellent metal to metal resistance and significant reduction in industrial wear on industrial products, such as casing wear. Other embodiments of the invention include tool joints having the hardbanding alloy welded to the outer cylindrical surface to its box and pin members and to stabilizer ribs on the stabilizer used in earth boring, such as boring for oil and gas, other industrial products, and methods of applying the hardfacing alloy to their surfaces. The hardfacing alloy does not require any post weld treatment, has primary bondes in its microstructure, the carbons in the alloy are tied up in the formation of secondary carbides which add to the abrasion resistance, and have a quadratic crystallographic structure and a hardness of about 1725 Hv comparable to the prior art hardness of the chromium carbide primary carbide alloys of the prior art but is substantially less brittle than C-Cr-Fe hardfacing alloys.
Abstract:
다결정다이아몬드테이블로부터의촉매추출은 (기체상으로또는비극성유기용매중에용해된) 할로겐으로처리하여촉매물질을염으로전환시킴으로써달성될수 있다. 그다음, 극성유기용매는임의로다결정다이아몬드테이블로부터염을침출시키는데사용될수 있다. (존재하거나그로부터적어도부분적으로침출된촉매물질의염을지니는) 다결정다이아몬드를경질복합기재에납땜하여매트릭스드릴비트에서사용하기에적합한커터를제조할수 있다.
Abstract:
칩배출이 불량에 따라 접합부가 절단되는 현상을 감소시키고 간편하게 제조가 가능하며 파손의 우려가 감소되도록, 절삭가공이 이루어지는 날부가 한쪽 끝부분에 형성되는 몸체와, 몸체의 다른쪽 끝부분에 연장하여 형성되는 자루를 포함하고, 몸체의 한쪽 끝부분은 초경합금을 사용하여 이루어지고, 몸체의 나머지 부분 및 자루는 탄소공구강이나 고속도강을 사용하여 일체로 형성하여 이루어지고, 몸체의 한쪽 끝부분과 몸체의 나머지 부분과는 마찰용접을 통하여 서로 만나는 부분을 일체로 고정시켜 이루어지는 드릴을 제공한다.
Abstract:
A method for manufacturing a matrix drill bit includes: placing a metallic blank within a casting assembly including a mold having an inner surface formed into a negative shape of facial features of the drill bit; loading powder into an annulus formed between the blank and the mold, the powder including at least one of: ceramic powder and cermet powder; placing a binder alloy into the casting assembly over the blank and the mold; protecting the binder alloy from oxidation; inserting the casting assembly, blank, powder, and binder alloy into a furnace; operating the furnace to heat the protected binder alloy to an infiltration temperature between solidus and liquidus temperatures thereof, thereby infiltrating the powder with the binder alloy and forming a bit body; removing the bit body from the furnace; and after removal, attaching cutters to blades of the bit body.