Essays about: "tool steel"

Showing result 31 - 35 of 148 essays containing the words tool steel.

  1. 31. Cooling Strategy Influence on Temperature in ETD Center

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Oskar Edinger; [2021]
    Keywords : Machining; Drilling; Exchangeable tip drill; 316L Stainless steel; Thermocouple; IR Thermography; Skärande bearbetning; Borrning; Löstoppsborr; 316L Rostfritt stål; Termoelement; IR Termografi;

    Abstract : Striving for increased productivity while maintaining hole quality and high process robustness when drilling requires knowledge about the working principles of heat generation, mechanics and a proper cutting fluid that aids in cooling, lubricating and evacuating chips from the cutting zone. If the heat generated in the tool-workpiece and tool-chip interfaces does not exit the cutting zone adequately through the chips, the workpiece material or the redistribution of coolant the hole quality can be impacted negatively and breakdowns may occur which reduces overall productivity. READ MORE

  3. 32. Life and fracture in very high cycle fatigue of a high strength steel

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Daniel Karlsson; [2021]
    Keywords : Very high cycle fatigue; VHCF; Fractography; Fine granular area; FGA; High strength tool steel; Ultrasonic testing equipment;

    Abstract : Classical fatigue models teach that there is an intrinsic fatigue limit for steels, representing a level of stress that is too low for regular crack growth where every cyclic load propagates a fatigue crack through the material. Modern application with extreme lifetimes has shown that fatigue will still take place in steels with stress levels well below the expected fatigue limit. READ MORE

  4. 33. Lubricants for Hot Stamping of Aluminum: Evaluation of Tribological Behavior and Cleanability

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Barbara Maria Rodriguez Leal; [2021]
    Keywords : Tribology; High-temperature; Metal-forming; Aluminum;

    Abstract : Working at elevated temperature has its challenges due to the high level of complexity whenthe tribosystems operate under harsh conditions, commonly resulting in an increase on thefriction and thermal softening that goes into severe adhesion, severe abrasion and materialtransfer. Despite considerable research, there is a lack of research on tribology applied to hightemperature processes. READ MORE

  5. 34. Method to assess machinability of engineering steels using coated carbide tools

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Petra Hedberg; [2021]
    Keywords : Machinability; tool wear; coated carbide; non-metallic inclusions; Ca-treated; steel; 42CrMo4;

    Abstract : In this master thesis, performed at Ovako Group R&D (Hofors) a new machining test method for ranking heats of calcium-treated steels, M-Steels, has been proposed.  A total of six different heats of 42CrMo4-M steel in the quenched-and-tempered (Q+T) condition were tested. READ MORE

  6. 35. Optimization of the process for reuse of steel beams using parametric design

    University essay from KTH/Byggteknik och design

    Author : Muhannad Asaad; Abdulla Husseini; [2021]
    Keywords : Reuse of steel beams using parametric design; Återbruk av stålbalkar med hjälp av parametrisk design;

    Abstract : Planet Earth's climate naturally varies over time, however the rapid change that is now takingplace is due mainly to human influence. Buildings and real estate sector's emissions ofgreenhouse gases is responsible for approximately 20,6% of Sweden’s total emissions ofgreenhouse and 33% of energy used 2018. READ MORE