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Effects of thread rolling processing parameters on mechanical properties and microstructures of high-strength bolts

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Published/Copyright: February 13, 2021
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Materials Testing
From the journal Materials Testing Volume 62 Issue 10

Abstract

Bolt production with a grade of 10.9 class quality made from AISI4140 material with a low thread rolling index is usually implemented in accordance with the thread rolling method (cold forming) in industrial applications. In this method, the effects of die revolutions and multiple passes are unknown in the thread forming process as the devices are usually operated with respect to geometrical dimensions but not the mechanical properties and microstructures of the material. In the literature there are few studies on microstructures of low-carbon steel having a higher thread rolling index in bolt production. This study experimentally examined the effects of the processing parameters on the mechanical properties and microstructures. Parameters such as forming speed and single or multi-pass influences were considered in the production of M12 × 1.75 and M20 × 2.5 fasteners widely used in industrial applications. The experiments identified the behavior of the mechanical properties, microstructures and micro-hardness of the AISI4140 material at two forming speeds (rpm) and three passes in the thread rolling process. Thus, significantly sensible outcomes as a function of processing parameters were obtained considering the thread strength viewpoints.

Keywords: Thread rolling parameters; lap failure; forming speed; cold forming; bolt production
Published Online: 2021-02-13
Published in Print: 2020-10-01

© 2020 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. CONTENTS
  2. Materials Testing
  3. FACHBEITRÄGE
  4. Fatigue life performance of multi-material connections hybrid joined by self-piercing rivets and adhesive
  5. Effect of laser welding speed on pore formation in AA 6061 T6 alloy
  6. Comparison of FDM-printed and compression molded tensile samples
  7. Effects of H2O2 and temperature on electrolytic pickling of austenitic stainless steel 304L in Na2SO4 solution
  8. Oblique impact behavior of Al-LDPE-Al sandwich plates
  9. Tension and compression moduli characterization of a bimodular ceramic-fiber reinforced SiO2 aerogel composite
  10. New submerged arc welding flux for hardfacing of Hardox steels
  11. Effects of thread rolling processing parameters on mechanical properties and microstructures of high-strength bolts
  12. Finite element analysis and design optimization of a non-circular sandwich composite deep submarine pressure hull
  13. Determination of readiness for laying based on material moisture, corresponding relative humidity, and water release
  14. Taguchi optimization of surface roughness in grinding of cryogenically treated AISI 5140 steel
  15. Ultra-high frequency induction and conventional sintering of Al-SiO2 composites: A comparative study
  16. Mechanical, thermal and chemical properties of spent black tea doped concrete
  17. Ultrasonic testing and evaluation of moisture-dependent elastic properties of fir wood
  18. BEZUGSQUELLEN
  19. IMPRESSUM
https://doi.org/10.3139/120.111579
Keywords for this article
Thread rolling parameters; lap failure; forming speed; cold forming; bolt production

Articles in the same Issue

  1. CONTENTS
  2. Materials Testing
  3. FACHBEITRÄGE
  4. Fatigue life performance of multi-material connections hybrid joined by self-piercing rivets and adhesive
  5. Effect of laser welding speed on pore formation in AA 6061 T6 alloy
  6. Comparison of FDM-printed and compression molded tensile samples
  7. Effects of H2O2 and temperature on electrolytic pickling of austenitic stainless steel 304L in Na2SO4 solution
  8. Oblique impact behavior of Al-LDPE-Al sandwich plates
  9. Tension and compression moduli characterization of a bimodular ceramic-fiber reinforced SiO2 aerogel composite
  10. New submerged arc welding flux for hardfacing of Hardox steels
  11. Effects of thread rolling processing parameters on mechanical properties and microstructures of high-strength bolts
  12. Finite element analysis and design optimization of a non-circular sandwich composite deep submarine pressure hull
  13. Determination of readiness for laying based on material moisture, corresponding relative humidity, and water release
  14. Taguchi optimization of surface roughness in grinding of cryogenically treated AISI 5140 steel
  15. Ultra-high frequency induction and conventional sintering of Al-SiO2 composites: A comparative study
  16. Mechanical, thermal and chemical properties of spent black tea doped concrete
  17. Ultrasonic testing and evaluation of moisture-dependent elastic properties of fir wood
  18. BEZUGSQUELLEN
  19. IMPRESSUM
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