摘要:
본 발명은 원통 형상의 동체로 된 쉘과, 상기 쉘의 내부를 구획하도록 설치되고, 서로 마주보도록 복수의 튜브삽입홀이 각각 관통 형성된 한 쌍의 튜브시트와, 상기 튜브시트 사이를 연결하도록 서로 마주보는 상기 튜브삽입홀 각각에 용접 결합되는 복수의 튜브를 포함하는 쉘앤튜브 열교환기에 있어서, 상기 튜브와 동일한 직경으로 형성되고, 상기 튜브시트 각각의 튜브삽입홀 내부로 각각 삽입되는 원통 형상으로 된 복수의 튜브접합부재와, 장형의 용접와이어를 일정한 길이로 절단한 후 링형상으로 제작되고, 상기 튜브 각각의 양단 외주에 각각 삽입되는 복수의 링와이어를 더 포함하고, 상기 튜브시트 각각은, 서로 마주보는 면에 상기 튜브삽입홀로부터 외주방향을 향해 접합부가 형성되도록 소정의 거리만큼 이격된 환형의 튜브시트홈이 함몰 형성되고, 상기 튜브 각각은, 양단이 상기 튜브접합부재의 마주보는 각각의 일단에 접촉함과 동시에 상기 튜브시트홈의 함몰된 간격 범위 내에 각각 위치하도록 상기 튜브시트의 마주보는 각각의 튜브삽입홀에 삽입되고, 상기 튜브접합부재의 내부로 삽입된 용접토치를 이용하여 상기 튜브시트 각각에 상기 링와이어를 용가재로 하여 상기 튜브접합부재와 용접결합되는 것을 특징으로 하는 쉘앤튜브 열교환기이다.
摘要:
The preparation and use of particulate metallic solder alloy having particles of a single chemical composition is described. The particles of the particulate metallic solder alloy have a bimodal size distribution in which particles in a smaller size range have a largest dimension that is smaller than a smallest dimension of particles in a larger size range of the bimodal distribution. In some examples the particles in the smaller size mode have dimensions in the range of 1 to 100 nm. In some examples, the particles in the larger size mode have dimensions in the range of 2 to 75 microns in dimension. In some examples, a halogen-free flux is used. In some examples, a solvent is used to make a paste.
摘要:
Die Erfindung betrifft einen Barren bestehend aus einer Aluminiumlotlegierung, mit folgenden Anteilen als Legierungsbestandteile in Gewichtsprozent: 4,5 % ≤ Si ≤ 12 %, und optional mit einem oder mehreren der folgenden Anteile als Legierungsbestandteile in Gewichtsprozent: Ti ≤ 0,2 %, Fe ≤ 0,8 %, Cu ≤ 0,3 %,Mn ≤ 0,10 %, Mg ≤ 2,0 %, Zn ≤ 0,20 %, Cr ≤ 0,05 %, Rest Aluminium und unvermeidbare Verunreinigungen, einzeln maximal 0,05 Gew.-%, in Summe maximal 0,15 Gew.-%, wobei zusätzlich Bor als Legierungsbestandteil vorgesehen ist, wobei Bor derart zulegiert ist, dass der Bor-Gehalt mindestens 100 ppm beträgt und die Aluminiumlegierung frei von primären Si-Partikeln mit einer Größe von mehr als 20 μm, insbesondere 10 μm, ist. Weiterhin betrifft die Erfindung ein Aluminiumlegierungsprodukt zumindest teilweise bestehend aus einer Aluminiumlegierung, einen Barren aus einer Aluminiumlegierung sowie ein Verfahren zur Herstellung einer Aluminiumlegierung.
摘要:
The present disclosure provides a method of forming a hermetically sealed enclosure that comprises a diamond material. The method comprises providing first and second enclosure components comprising the diamond material and having first and second recesses, respectively, at edge portions. At least one of the first and second enclosure components has a cavity. The enclosure components have respective contact surfaces at the first and second recesses and are shaped such that an outer channel is formed by the co-operation of the first and second recesses when the first and second enclosure components are contacted at the contact surfaces to form the enclosure. The method further comprises bonding a first type of material to at least surface portions of the first and second recesses of the first and second enclosure components, respectively. The method also comprises bonding a second type of material to the first type of material so that the second type of material covers at least portions of the first type of material. The second type of material is biocompatible and suitable for forming a hermetically sealed seal. In addition, the method comprises contacting the enclosure components to form the enclosure and bonding the second type of material of the first enclosure component to the second type of material of the second enclosure component so as to form a hermetically sealed seal in the outer channel.
摘要:
A shaped, sealed sandwich product is manufactured by press hardening of a sandwich blank consisting of two sheets (12, 13) with spacer material (14) and solder lying in between. The edges of the blank are excepted from the spacer material and the edges are pressed together in the press hardening so that the sheet edges are sealingly joined without spacer material. Alternatively, there is a sealing rim with spacer material along the edges.
摘要:
Procédé dʼassemblage dʼau moins deux éléments par brasage, le premier élément étant en hafnie yttriée ou en thorine yttriée, le deuxième élément étant en hafnie yttriée, en thorine yttriée ou en alliage métallique, ledit procédé comportant les étapes successives suivantes : - mettre en contact les deux éléments avec un alliage de brasage FeNiTi, - faire fondre lʼalliage de brasage FeNiTi pour former un joint de brasage.
摘要:
The invention relates to an insert brazed on a body of cutting tools (101), consisting of: a metal substrate (11), in the form of plates, having a surface for attachment to the tool body; a high-temperature, brazing, alloy layer (12); an intermediate layer; and a ceramic plate (14). The brazing alloy layer connects the metal substrate (11) of the ceramic plate (14) via the metal layer (13). A low-temperature brazing layer (16) connects the insert (1, 1') to the body of the tool (101).
摘要:
A cap assembly for optical communications comprising a housing that includes a front side perpendicular from a bottom side, opposing parallel first and second sides perpendicular from the bottom side, and a back side disposed perpendicularly between the first side and the second side offset from respective ends of the first side and the second side opposite the front side. The back side includes an opening there-through and a three-sided ledge formed along an interior of the first side leg, an exterior of the back side, and an interior of the second side leg. The cap assembly further includes a window configured to contact the three-sided ledge of the back side, the glass panel covering the opening there-through and attached to the assembly via a solder pre-form.