• Chapter II NEW METAL MATERIALS……...................................…..
  • Chapter III METAL PROCESSING TECHNOLOGY…………….
  • 9. §. Defects in casting technology and casting of parts..................
  • 10.§. Metal forming and its types…………..
  • 11.§. Welding of materials, their classification and weldability......
  • 12.§. Basics of metal cutting.
  • Glossary…………………………...……..
  • §. Internal structure of metals




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    3 §.

    Internal structure of metals

    40

    3.1.

    Metallic type of bond in metals.....................................

    40

    3.2.

    Types of metal crystal lattices

    41

    3.3.

    Crystallographic planes...................................................

    43

    3.4.

    Internal structure of metals. The structure of real crystals….

    47

    3.5.

    Dislocations………………..

    51

    4 §

    Iron and its alloys.................................................... ...... .....

    56

    4.1.

    Iron-carbon phase diagram. ........................................

    56

    4.2.

    Iron and its properties. Cementite and its properties…………

    58

    4.3.

    Structures in the Fe – Fe3C system............................................. .

    62

    4.4.

    State diagram of the Fe – Fe3C system …………..……….

    64

    4.5.

    Iron ores…………………..…………...…….

    65

    5.§

    Theory of heat treatment……………………………..

    67

    5.1.

    Theory of heat treatment……………………………..

    67

    5.2.

    Internal structural changes when heating steel…….

    69

    5.3.

    Decomposition of pearlite into austenite……….…….

    71

    5.4.

    Isothermal decomposition of supercooled austenite

    72

    5.5.

    Formation of pearlite, martensite, bainite..................................

    73

    5.6.

    The influence of heat treatment on the properties of steel.

    76

    Chapter II

    NEW METAL MATERIALS……...................................…..

    79

    6.§

    Non-metallic materials................................................... ..

    79

    6.1.

    General information about non-metallic materials.

    79

    6.2.

    Polymers……….………………..…..

    80

    6.2.1.

    Thermoplastic and thermosetting polymers…………..

    81

    6.2.2.

    Polymer-based composite materials……..

    82

    6.2.3.

    Polymers and their types

    83

    6.3.

    Fillers and plasticizers…………………..

    87

    6.4.

    Methods for manufacturing plastic parts……..

    92

    7.§.

    Rubber, ceramics, wood materials and applications

    96

    7.1.

    About the preparation of parts made of rubber, ceramics, wood.

    96

    7.2.

    Rubber, ceramics, wood and technological properties...

    104

    Chapter III

    METAL PROCESSING TECHNOLOGY…………….

    109

    8.§.

    Technology of casting metal parts…………..

    109

    8.1.

    The role of casting in mechanical engineering, properties of cast materials and their definition………………………………..

    109


    8.2.

    Forms, requirements for their materials, composition and preparation…………………….……………….

    111


    8.3.

    Model configuration, stern preparation………….

    112

    8.4.

    Making molds by hand and by machine

    114

    8.5.

    Special methods for obtaining ingots…………………

    119

    9. §.

    Defects in casting technology and casting of parts..................

    123

    9.1.

    Special methods of obtaining ingots. ……………………

    123

    9.2.

    Forms, material requirements, composition and preparation.

    125


    9.3.

    Model set, stern preparation. …………………….

    128

    9.4.

    Casting molds by hand and by machine…………….

    130

    9.5.

    Defects in metal castings, their causes and prevention……………………………….

    131


    10.§.

    Metal forming and its types…………..

    135

    10.1.

    Metal forming…………………..…

    135

    10.2.

    Basic methods of working with metal pressure.

    136

    10.3.1.

    Heating of metals……………….……………….

    137

    10.3.2.

    Oven with chamber………………………….

    140

    10.3.3.

    Methodical furnaces………..……………..

    141

    10.3.4.

    Electric ovens…………………….

    141

    10.3.5.

    Induction furnaces……………..…..………

    142

    10.4.

    Rolling…………….………………….

    143

    10.5.

    Rolling mill………………………………………………………

    146

    10.6.

    Metal pressing………………………….

    148

    10.7.

    Stamping………………………………………………….

    149

    10.8.

    Volumetric stamping………..…………………..

    150

    11.§.

    Welding of materials, their classification and weldability......

    154

    11.1.

    Welding work…………………………..

    154

    11.2.

    Welding methods and technologies…………..

    157

    11.3.

    Arc welding…………………..

    161

    11.3.2.

    Electrodes…………………………………………………………………….

    168

    11.4.

    Semi-automatic submerged arc welding…

    170

    11.5.

    Electric arc welding in an argon atmosphere………..

    171

    11.6.

    Electric arc welding in CO2 atmosphere………..………..

    172

    11.7.

    Electroslag welding………………….

    175

    11.8.

    Welding using plasma, electron beam, laser (light beam), gas (flame).

    176


    11.9.

    Efficiency of welding technology…………..

    185

    11.10.

    Welding of non-ferrous metals…………………..

    194

    12.§.

    Basics of metal cutting.

    196

    12.1.

    Cutting process…………………..

    196

    12.2.

    Movements when cutting. Processing scheme……………..

    199

    12.3.

    Elements of the cutting mode are approaching……………..

    200

    12.4.

    Turning and milling machine and its angles……….

    202

    12.5.

    Slag formation and types of slag…….……..

    206

    12.6.

    Events observed during cutting. Stability of the cutting tool…………………….………………….

    209





    Glossary…………………………...……..

    213




    Literatures........................................................ ...........................

    230


    11. Tim A. Osswald, Georg Menges “Material Science of Polymers for Enjineers” Carl Hanser Verlag, Munich

    22 O.X. Eshqobilov, L.O. Daminov. “Materialshunoslik”. , “Intellekt” nashriyoti Qarshi 2021

    33.. M.N. To‘xtasheva, A.X. Rasulov, B.A. Sobirov. “Materialshunoslik va konstruksion materiallar texnologiyasi”,- T.,“Tamaddun” 2022

    44. V.A. Mirbobyev . “Konsturuksion materiallar texnologiyasi” . “O’zbekiston” nashriyoti, T.:2004

    55. Umarov E.O. “Konstruksion materiallar texnologiyasi o‘quv fanidan laboratoriya va amaliyot ishlari” “Tafakkur bo‘stoni” Toshkent 2015

    6 F.R.Norxudjayev. Materialshunoslik. -T., "Fan va texnologiya", 2014

    7 V.A. Mirbobyev . “Konsturuksion materiallar texnologiyasi” . “O’zbekiston” nashriyoti, T.:2004

    8 Mikell P. Groover . “Fundamentals of Moderen Manufacturing” inted in the United States of America. 2010

    9 M.N. To‘xtasheva, A.X. Rasulov, B.A. Sobirov. “Materialshunoslik va konstruksion materiallar texnologiyasi”,- T.,“Tamaddun” 2022

    10 M.N. To‘xtasheva, A.X. Rasulov, B.A. Sobirov. “Materialshunoslik va konstruksion materiallar texnologiyasi”,- T.,“Tamaddun” 2022

    11 V.A. Mirbobyev . “Konsturuksion materiallar texnologiyasi” . “O’zbekiston” nashriyoti, T.:2004

    12 Umarov E.O. “Materialshunoslik”., Cho‘lpon nomidagi nashriyot-matbaa ijodiy uyi Toshkent 2014

    13 Mikell P. Groover . “Fundamentals of Moderen Manufacturing” inted in the United States of America. 2010

    14 Uilyam D. Kallister, Devid Dj. Retvich “Materialovedenie ot teхnologii k primeneniyu”, JohnWiley&Sons,inc.,2008

    15 Apзaмaсов Б.Н. Мaтеpиaловедение.- М .: «Мaшиностpоение»,2004

    16 M.N. To‘xtasheva. “Ishqalanishga chidamli va yeyilishga bardoshli kompozit termoplastik materiallarni ishlab chiqarishning samarali texnologiyasini ishlab chiqish va ulardan tolali massa bilan o'zaro ta'sir qiladigan bog'langan detallarlarni ishlab chiqarish”. Dissertatsiya avtoreferati

    17 M.N. To‘xtasheva. “Ishqalanishga chidamli va yeyilishga bardoshli kompozit termoplastik materiallarni ishlab chiqarishning samarali texnologiyasini ishlab chiqish va ulardan tolali massa bilan o'zaro ta'sir qiladigan bog'langan detallarlarni ishlab chiqarish”. Dissertatsiya avtoreferati

    18 Rasulov, A.Kh., Chulliyev, Z.F., Umirzokova, F.B., Arazberdieva Sh.T., Tukhtasheva, M.N. “Creation of Superhard Composite Materials based on Diamond and Boron Nitride”. International Journal of Mechatronics and Applied Mechanics, 2023, Issue 14.

    19 Carter C. Barry, Norton M. Grant “Ceramic Materials/ Science Enjineering” Spinger 2007

    20 Б.Е. Умиpзaков и дp. – “Нaномaтеpиaли и пеpспективи их пpименения” Тaшкент, «МЕPЖЮС» 2008

    21 Tim A. Osswald, Georg Menges “Material Science of Polymers for Enjineers” Carl Hanser Verlag, Munich

    22 С.Н. Колосов, И.С. Колосов “ Мaтеpиaловедение и технология метaллов”. – М.: “ Мaшиностpоение”, 2004


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