Sökning: "flapper valve steel"

Hittade 3 uppsatser innehållade orden flapper valve steel.

1. 1. Investigation of surface scratches created during strip steel manufacturing

   Master-uppsats,

   Författare :Kalaivanan Raju; [2019]
   Nyckelord :;

   Sammanfattning : Thin flapper valves are made from a stainless steel strip that contains 13.5 wt. % Chromium.  Sometimes in its processing this strip experiences a surface defect which may affect the end product performance negatively, so they are not desirable. LÄS MER

3. 2. Wear mark evolution and numerical study of impact stresses in stainless steel flapper valves

   Master-uppsats, KTH/Materialvetenskap

   Författare :Jesper Larsson; [2016]
   Nyckelord :Flapper valve; FEM; Impact fatigue; Wear mark;

   Sammanfattning : Compressors that are used in refrigerators and air conditioners usually have flapper vales made of martensitic stainless steel to control the flow of the refrigerant in the system. During service the flapper valves are affected by both bending and impact fatigue in the very high cycle fatigue (VHCF) range with billions of cycles until failure. LÄS MER

4. 3. Fatigue testing of scratched flapper valve steel

   Master-uppsats, Avdelningen för maskin- och materialteknik

   Författare :vighneish selvaraj nadar; [2014]
   Nyckelord :flapper valve steel; fatigue testing; fatigue life measurements and comparison; stair case method; fatigue fractures;

   Sammanfattning : A flapper valve is made from a hardened and tempered high strength strip steel which opens and shuts as it is subjected to very high cyclic loads. Steel strip of which flapper valves are made from can   encounter a surface defect which are anticipated to influence fatigue life negatively. LÄS MER