Sökning: "Grit"

Visar resultat 1 - 5 av 12 avhandlingar innehållade ordet Grit.

1. 1. Development of Multi-grit cBN Grinding Wheel for Crankshaft Grinding

   Författare :Nastja Macerol; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; crankshaft; grinding; wear; grit concentration; grit toughness; grinding wheels; grit size; automotive; grit shape; cubic Boron Nitride;

   Sammanfattning : A crankpin, part of a crankshaft, has a complex profile that is difficult to grind. The process often causes challenges such as excessive heat on the crankpin sidewall and wheel wear on the radius, causing reduced dressing interval. Different solutions were proposed to overcome these challenges, mainly focusing on the process, i.e. LÄS MER

3. 2. Development of Multi-grit cBN Grinding Wheel for Crankshaft Grinding

   Författare :Nastja Macerol; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; automotive; cBN; grinding; vitrified bond; grit shape; grit concentration; morphology; aspect ratio; crankshaft; grinding wheels;

   Sammanfattning : Crankshaft is a geometrically challenging component to grind. Over the years a number of grinding strategies have been developed to overcome thermal damage issues and excessive wheel wear. Radial and angular plunge processes have been adopted on some of the production machines. Recently a new, temperature-based strategy, has been proposed. LÄS MER

4. 3. Children's learning at play in a hybrid reality

   Författare :Marina Wernholm; Anette Emilson; Linda Reneland-Forsman; Roger Säljö; Linnéuniversitetet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Digital communities; Grit; Hybrid reality; Multimodality; Participation; Pedagogics and Educational Sciences; Pedagogik och Utbildningsvetenskap; Pedagogics and Educational Sciences; Pedagogik och Utbildningsvetenskap;

   Sammanfattning : This compilation thesis contributes with knowledge on children’s (8–12 years of age) out-of-school play in digital communities. The focus is on how these communities can be understood as learning practices in a hybrid reality. LÄS MER

5. 4. A Study of the Adhesion Strength of Plasma Sprayed Coatings

   Författare :Fouzi Bahbou; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Splat.; Surface roughness; Mechanical anchoring; Grit blasting; Adhesion strength; Protal® process; Fractal analysis; Thermal spraying; Coating; Surface pre-treatment;

   Sammanfattning : Surface preparation prior to thermal spraying is a key factor in ensuring a good adhesion of the coating onto the part to be coated. Surface pre-treatment conditions and methods have mainly been developed experimentally and have changed little over the years. LÄS MER

7. 5. A study of the adhesion strength of plasma sprayed coatings

   Författare :M. Fouzi Bahbou; Högskolan Väst; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Grit blasting; Thermal spraying; Coating; Surface pre-treatment; Surface roughness; Fractal analysis; Adhesion strength; Mechanical anchoring; Protal® process; Splat; Manufacturing engineering; Produktionsteknik; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

   Sammanfattning : .... LÄS MER