Publication detail

Cold forming of bolts without thermal treatment

PETRUŠKA, J. JANÍČEK, L. MAROŠ, B. RUSZ, S.

English title

Cold forming of bolts without thermal treatment

Type

journal article - other

Language

en

Original abstract

In the paper, we describe the experience with cold forming of bolts, made of micro-alloyed steel, specially designed to enable elimination of thermal treatment. First, the flow stress curve and hardening of material are evaluated by compression testing. Next, cold forming of various geometrical versions of the bolts is numerically simulated to obtain and compare their strain distribution and formability exhaustion. The results are verified by hardness measurement of produced specimens. Final products are then subjected to tensile testing to evaluate basic mechanical characteristics of the bolts – yield and tensile strength and elongation at rupture.

English abstract

In the paper, we describe the experience with cold forming of bolts, made of micro-alloyed steel, specially designed to enable elimination of thermal treatment. First, the flow stress curve and hardening of material are evaluated by compression testing. Next, cold forming of various geometrical versions of the bolts is numerically simulated to obtain and compare their strain distribution and formability exhaustion. The results are verified by hardness measurement of produced specimens. Final products are then subjected to tensile testing to evaluate basic mechanical characteristics of the bolts – yield and tensile strength and elongation at rupture.

Keywords in English

cold forming of bolts, FE simulation, hardness measurement, tensile testing

RIV year

2002

Released

01.09.2002

ISSN

0924-0136

Journal

Journal of Materials Processing Technology

Volume

125-126

Number

1

Pages count

6

BIBTEX


@article{BUT40949,
  author="Jindřich {Petruška} and Libor {Janíček} and Bohumil {Maroš} and Stanislav {Rusz},
  title="Cold forming of bolts without thermal treatment",
  journal="Journal of Materials Processing Technology",
  year="2002",
  volume="125-126",
  number="1",
  month="September",
  issn="0924-0136"
}