Sökning: "Press quenching"

Hittade 5 uppsatser innehållade orden Press quenching.

  1. 1. Simulation and Experimental Based Hardenability Evaluation of Chromium Alloyed Powder Metal Steels

    Master-uppsats, KTH/Materialvetenskap

    Författare :Atharva Kotasthane; [2023]
    Nyckelord :Hardenability; Martensite; Simulation Modelling; Microhardness; Microstructure; Härdbarhet; Martensit; Simuleringsmodellering; Mikrohårdhet; Mikrostruktur;

    Sammanfattning : Powder metallurgy is a branch of metal forming technology where metal powders are used to manufacture parts and components. It is a flexible and economical technique for manufacturing complicated shapes. This present work focuses on press and sinter technology and forms a part of Höganäs’s efforts of modelling hardenability through quenching. LÄS MER

  3. 2. Relation Between the Material in Press Hardening Dies and Fully Martensitic Transformation : Sheet properties of thick 3D-sheets in small series production

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Jesper Christensson; [2020]
    Nyckelord :hot stamping; press hardening; material properties;

    Sammanfattning : This report evaluates the influence of the die material on the cooling rate and martensitic transformation of press hardened sheets. The goal was to increase the thicknesses of sheets that can form fully martensitic microstructure when press hardened. LÄS MER

  4. 3. Investigation of thermal spring back of a hot formed 22MnB5 A-pillar with tailored properties

    Uppsats för yrkesexamina på grundnivå, Högskolan Väst/Avdelningen för maskinteknik och naturvetenskap

    Författare :Mattias Lugnberg; Tobias Netz; [2016]
    Nyckelord :Thermal spring back; hot stamping;

    Sammanfattning : In a world where fuel economy and crash safety is becoming an important factor in the automotive industry, the need for materials with very high strength-to-weight ratio is growing rapidly. One of the materials used for this purpose is the boron steel 22MnB5. LÄS MER

  5. 4. Furnace Brazing of AlSi-coated and Uncoated 22MnB5 Steel at Austenite Temperatures

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :Adam Häggqvist; [2015]
    Nyckelord :;

    Sammanfattning : By continued advances in mechanical strength of press hardened boron alloyed steel (22MnB5) weight savings can be achieved by the use of less material. However, with reduced material thickness stiffness problems such as buckling arises and the high strength of the material can’t fully be taken advantage of. LÄS MER

  7. 5. Distortions of Press Quenched Crown Wheels

    Master-uppsats, KTH/Materialvetenskap

    Författare :Benjamin Brash; [2015]
    Nyckelord :Press quenching; Distortions; Crown wheel; Segregation; Ingot casting; Continuous casting;

    Sammanfattning : Scania has experienced difficulties with large variations of the slope of the back plane after press quenching of case hardened crown wheels of especially type R780 Steg supplied from ingot cast material. This leads to that a large number of crown wheels has to be remeasured and sorted according to back slope which is time consuming for operators. LÄS MER