Specification for steel and copper alloy wafer check valves, single-disk, spring-loaded type

2015 ◽  
Keyword(s):  
Copper Alloy ◽  
Disk Spring ◽  
Single Disk

The Slotted Conical Disk Spring

1973 ◽  
Vol 95 (3) ◽  
pp. 765-770 ◽  
Author(s):  
G. Schremmer
Keyword(s):  
Single Unit ◽  
Trial And Error ◽  
Inside Diameter ◽  
Disk Spring ◽  
Single Disk ◽  
Outside Diameter

The slotted conical disk spring is a modification of the regular conical disk spring or Belleville spring inasmuch as it has regularly arranged slots extending from the inside diameter. A single disk of the slotted type undergoes a larger deflection at a smaller load than a regular disk spring of comparable dimensions, thereby combining some of the advantages of the disk spring and the cantilever type spring in a single unit. It is used, where stacking is undesirable, a relatively large outside diameter is tolerable, and a regressive load-deflection-diagram is desired, like in clutch applications. The theory presented here allows the design of slotted disk springs without the lengthy trial and error procedure that has been used so far. Experiments show the validity of the new theory.

Design and Numerical Simulation of the Disk Spring Vertical Isolation Device

2014 ◽  
Vol 501-504 ◽  
pp. 819-822
Author(s):  
Xue Yuan Yan ◽  
Jian Ping Wang
Keyword(s):  
Numerical Simulation ◽  
Engineering Application ◽  
Small Deformation ◽  
Contact Problems ◽  
Finite Element Software ◽  
Disk Spring ◽  
Single Disk ◽  
Simulation And Experiment ◽  
Isolation Device ◽  
Test Requirements

A vertical isolation device was designed and based on test requirements in this paper, which adopt disk spring with external guide sleeve. Through reasonable designing, this device can meet the requirements of stiffness and bearing capacity, etc. Single disk spring and properties of vertical isolation device were analyzed by finite element software ANSYS. The numerical simulation and the theoretical solution of single disk spring are basically coincident when small deformation. Even the deformation is large and there only are minor differences. The contact problems between disk springs, disk group and external sleeve, should be taken into consideration. The comparisons for hysteretic curve between numerical simulation and experiment result of vertical isolation device shows that their stiffness and energy dissipation capacity are very close, and the precision of the model can satisfy the requirement of numerical analysis and engineering application.

The Disk Spring or Belleville Washer

1946 ◽  
Vol 155 (1) ◽  
pp. 93-100 ◽  
Author(s):  
Graham Ashworth
Keyword(s):  
Internal Stress ◽  
Constant Thickness ◽  
Helical Springs ◽  
Inside Diameter ◽  
Rapid Design ◽  
Calculated Stress ◽  
Disk Spring ◽  
Single Disk ◽  
Outside Diameter

The conical disk spring, often known after the original patentee as the Belleville Washer, has considerable potentialities for cushioning purposes, but its use in this country has been restricted owing to the lack of published information regarding the load-deflexion and stress-deflexion relations obtaining. The circular conical disk of constant thickness, with a concentric hole and under central loading, is analysed in theory and design. Part I deals with theoretical aspects of the single disk, shows that a range of load-deflexion curves can be obtained (the shape of the curve depending on the ratio of the free camber to the thickness of the disk) and develops the relation between the distribution of internal stress and the ratio of the outside diameter of the disk to the inside diameter (showing that for economic utilization of space and material this ratio should not be more than two). Part II deals with the design of nests of disk springs, with particular reference to the use of these nests for buffering duties outside those for which helical springs can be easily employed. A figure for the maximum permissible calculated stress is suggested and a set of simple formulae which facilitate rapid design is developed from a consideration of the storage of energy under deflexion.

Determining whiskering properties of tin-copper alloy solder-dipped platings

2010 ◽  
Vol 54 (3-4) ◽  
pp. 107
Author(s):  
Barbara Horváth ◽  
Balázs Illés ◽  
Tadashi Shinohara ◽  
Gábor Harsányi
Keyword(s):  
Copper Alloy ◽  
Alloy Solder

A Romanesque crucifix from Macewen's Castle, Loch Fyne, Mid Argyll

1989 ◽  
Vol 16 (1) ◽  
pp. 81-84
Author(s):  
J. G. Scott
Keyword(s):  
Copper Alloy ◽  
12Th Century ◽  
Made In

Summary This copper alloy crucifix was found during excavation at Macewen's Castle in Argyll in 1968 and closely resembles others known to date from the 12th century; it may have been made in Belgium. The arms could have been bent back to aid concealment in the 17th or 18th centuries.

Between Centre and Periphery: Early Egyptian and Nubian Copper Alloy Artefacts in the Collection of the Kunsthistorisches Museum Vienna (KHM)

2018 ◽  
Vol 28 ◽  
pp. 419-456
Author(s):  
Martin Odler ◽  
Katharina Uhlir ◽  
Marie Jentsch ◽  
Martina Griesser ◽  
Regina Hölzl ◽  
...  
Keyword(s):  
Copper Alloy
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