Search for dissertations about: "cold bonded"

Showing result 1 - 5 of 12 swedish dissertations containing the words cold bonded.

2. 1. Recycling of metallurgical by-products within integrated iron and steelmaking : experimental studies of cold bonded by-product pellets

   Author : Ryan Robinson; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

   Abstract : In recent years as costs for depositing dust and sludge generated in the iron and steel making industry have increased, due to lack of space and increasing environmental restrictions, the need to recycle these solid by- products to avoid depositing costs and to recover valuable metal fractions, is soon becoming a necessary reality. Cold bonded agglomeration is considered to be a well-suited alternative for recycling of steel industry by-product dust and sludge. READ MORE

4. 2. Studies on the cold bonded briquettes of iron and steel plant by-products as burden material for blast furnaces

   Author : Maneesh Singh; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

   Abstract : During the various stages of iron & steel production a number of iron bearing by-products are generated. These by-products can be made into cement bonded agglomerates for use as burden material for blast furnaces. READ MORE

5. 3. Wafer-level heterogeneous integration of MEMS actuators

   Author : Stefan Braun; Göran Stemme; Martin A. Schmidt; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Microelectromechanical systems; MEMS; silicon; wafer-level; integration; heterogeneous integration; transfer integration; packaging; assembly; wafer bonding; adhesive bonding; eutectic bonding; release etching; electrochemical etching; microvalves; microactuator; Shape Memory Alloy; SMA; NITINOL; TiNi; NiTi; cold-state reset; bias spring; stress layers; crossbar switch; routing; switch; switch array; electrostatic actuator; S-shaped actuator; zipper actuator; addressing; transfer stamping; blue tape; Computer engineering; Datorteknik;

   Abstract : This thesis presents methods for the wafer-level integration of shape memory alloy (SMA) and electrostatic actuators to functionalize MEMS devices. The integration methods are based on heterogeneous integration, which is the integration of different materials and technologies. READ MORE

6. 4. Heterogeneous Integration of Shape Memory Alloysfor High-Performance Microvalves

   Author : Henrik Gradin; Göran Stemme; Peter Woias; KTH; []
   Keywords : Microelectromechanical systems; MEMS; silicon; wafer-level; integration; heterogeneous integration; wafer bonding; Au-Si; eutectic bonding; release etching; electrochemical etching; microvalves; microactuators; shape memory alloy; SMA; NiTinol; TiNi; NiTi; cold-state reset; bias spring; gate valves; wire bonding;

   Abstract : This thesis presents methods for fabricating MicroElectroMechanical System (MEMS) actuators and high-flow gas microvalves using wafer-level integration of Shape Memory Alloys (SMAs) in the form of wires and sheets. The work output per volume of SMA actuators exceeds that of other microactuation mechanisms, such as electrostatic, magnetic and piezoelectric actuation, by more than an order of magnitude, making SMA actuators highly promising for applications requiring high forces and large displacements. READ MORE

7. 5. Recycling of Blast Furnace Sludge within the Integrated Steel Plant : Potential for Complete Recycling and Influence on Operation

   Author : Anton Andersson; Lena Sundqvist Ökvist; Hesham Ahmed; Caisa Samuelsson; Yongxiang Yang; Luleå tekniska universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

   Abstract : Ore-based steelmaking generates various residues including dust, sludges, scales and slags. Internal and external recycling has allowed for 68-90 % of the dust, sludges and scales to be recycled. However, several residues are landfilled despite containing elements valuable as raw material in the production of steel. READ MORE