Sökning: "UHSS"

Hittade 5 uppsatser innehållade ordet UHSS.

1. 1. Projection Nut Welding to High- and Ultra-high Strength Steels

   Master-uppsats, KTH/Hållfasthetslära

   Författare :Love Englund; [2023]
   Nyckelord :mechanics; solid mechanics; material mechanics; welding; resistance welding; projection welding; nut welding; high strength steel; ultra high strength steel; uhss; coated boron steel; mekanik; hållfasthetslära; materialvetenskap; svetsning; motståndssvetsning; projektionssvetsning; muttersvetsning; belagt borstål;

   Sammanfattning : In an effort to increase the fuel efficiency of cars more widespread use of higher strength steels is seen for their high strength-to-weight ratio. Thesesteels are more limited in their formability and tendency to harden than conventional steels, complicating manufacturing. LÄS MER

3. 2. Friction Element Welding of Ultra High Strength Steels to Aluminium Alloys

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Hilda Vestberg; [2022]
   Nyckelord :friction element welding; UHSS; aluminum; ejoweld; dissimilar welding;

   Sammanfattning : To address the concerns of simultaneously improving crash performance and fuel efficiency in the automotive industry, multi-material car bodies are becoming increasingly popular. Aluminium and steel are two materials whose properties complement each other well for this application. LÄS MER

4. 3. Comparing the Effectiveness of Punching to Laser Cutting in UltraHigh Strength Steel

   Kandidat-uppsats, KTH/Materialvetenskap

   Författare :Felix Öhman; [2021]
   Nyckelord :;

   Sammanfattning : This study examines the efficiency of punching compared to laser cutting in sheets of Ultra High Strength Steel (UHSS). The study was conducted to determine which process is more efficient with respect to sheet thickness, where the quality of the cut edge is also taken into consideration of whether punching is recommended over laser cutting. LÄS MER

5. 4. High Temperature Tribology in Hot Stamping

   Master-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Evan Kurnia; [2019]
   Nyckelord :high temperature tribology; hot stamping; acoustic emission; condition monitoring; hardfacing;

   Sammanfattning : Many automotive components are made of Al-Si coated ultra-high strength boron steel (UHSS) and are produced by hot stamping process. In this process, the workpiece is heated to an austenitizing temperature and is then formed and quenched simultaneously between the tools to achieve the desired shape and high strength. LÄS MER

7. 5. Innovative Methods for Welding Ultra High Strength Steel with Resistance Spot Welding

   Master-uppsats, KTH/Industriell produktion

   Författare :Rickard Aldén; [2018]
   Nyckelord :;

   Sammanfattning : Resistance spot welding (RSW) is the most frequently used method for welding thin sheets in manufacturing industries such as the automotive industry, because of the high productivity of RSW. In order to reduce CO2 emissions the automotive industry strives towards creating structures of light weight, this is partly achieved by the use of lightweight materials such as Aluminum and composite materials. LÄS MER