30 uppsatser · sida 2 av 2
The aim of this thesis was to investigate if the robotized welding method FSW (Friction Stir Welding) could be applied for joining a rotating structure in an aero engine at Volvo Aero Corporation. FSW is expected to introduce less defects than today’s welding methods and could …
Warm forging of aluminum alloy 6026 T9
… any lubricant.The performed experiments show that the lubricant reduces friction and makes it easier for the material to flow into the die. Higher billet temperature than 450 °C is deemed unnecessary as it does not give any significant improvement in filling the die. The …
A preliminary study
… Other material properties have been studied as well such as hardness, friction coefficient, fatigue- and wear resistance. The cost of some of the different surface finishing techniques has been studied as well, because in order to be interesting their price must match what …
AbstractIn the fall of 2003 a project was started in the Swedish building sector that is called BASTA (the building sectors’ termination of especially harmful substances). The project is operated by the building companies NCC, Skanska, PEAB and JM, the Swedish Building Industry …
… sealings on a cylinder piston. The surface wanted is a surface with both low frictional forces and small leakage. This study was done with the goals of investigating and determining existing surfaces due to the frictional force and leakage. How can we in an easy manner describe …
… forces higher than the design force the roll and the bearing houses move. The friction force is kept at a minimum by moving the bearing houses around a joint, which promotes lineload measurements. The lineload is generated when pulp pass between the rolls. The developed solution …
… the stress in the thread gets optimized and a coating or lubricant with a low friction coefficient will lower the torque. Three possible solutions are suggested.
… this thesis. The quality parameters looked at were fineness, strength, length, friction, and colour. The impact of external growth factors and plant development on these quality properties are discussed. No industrial norms for hemp textile fibres are available. However, there …
… i sin tur vara tydlig med val av metod, tillvägagångssätt ochbegärande av rätt material som underlag för sina studier. En ny infallsvinkel som intediskuteras i rapporterna fast den kanske borde det är klimatförändringarnas påverkan på detlångsiktiga klimatet. Faktum är att …
… hitta ett gummibelägg med goda friktionsegenskaper. Ökad area och optimerade materialegenskaper kan i teorin leda till bättre friktion. Konceptet testas på både vått och torrt väglag genom en konstruktion under testbilens framvagn. Fyra olika gummiprover jämförs med bilens …
… bearings/slide plates has been developed but it needs to be examined if the friction is low enough for it to work. In other cases, a solution for how to move the wheels so that the sections don’t need to rest on them in the closed position should be developed.
Ett produktutvecklingsprojekt på uppdrag av Binar Elektronik AB
… riktningar vid kompression samtidigt som dess gap är försett med friktionsmaterial som gör att påsens väggar skjuvas isär. Produktens enkla form gör det enklare att öppna plastpåsar samtidigt som den minimerar smittspridning och tillåter storserietillverkning till låg kostnad …
… is needed. The result of the examination of the suctionvalve shows that the friction between the piston and the seal is high and that this causes the valve in a few cases sheaves. The study concluded that only small changes in material or detail, improve the component.
… is needed. The result of the examination of the suctionvalve shows that the friction between the piston and the seal is high and that this causes the valve in a few cases sheaves. The study concluded that only small changes in material or detail, improve the component.
SammanfattningPendelmetoden eller ”Pendulum Friction Tester” är en bärbar friktionsmätningsmetod för både gångytor och vägbanor. Den har funnits sedan 1940-talet men modifierades på 1960-talet med bland annat en ny skala som kallas för PTV (Pendulum Test Value). Ju halare ett …
