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Vol 10, Issue 1, 2014
Pages: 95 - 100
Professional paper
Metallic materials
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Published: 24.04.2014. Professional paper Metallic materials

HEAT TREATMENT OF LOW CARBON STEEL SCREWS IN THE STRAIGHT FLOW FURNACE

By
Jusuf Duraković ,
Jusuf Duraković
Contact Jusuf Duraković

Faculty of Engineering and Natural Sciences, University of Zenica , Zenica , Bosnia and Herzegovina

Mirsada Oruč ,
Mirsada Oruč

Faculty of Engineering and Natural Sciences, University of Zenica , Zenica , Bosnia and Herzegovina

Sulejman Muhamedagić ,
Sulejman Muhamedagić

FACULTY OF ENGINEERING AND NATURAL SCIENCES, University of Zenica , Zenica , Bosnia and Herzegovina

Raza Sunulahpašić ,
Raza Sunulahpašić

FACULTY OF ENGINEERING AND NATURAL SCIENCES, University of Zenica , Zenica , Bosnia and Herzegovina

Almaida Gigović-Gekić
Almaida Gigović-Gekić

FACULTY OF ENGINEERING AND NATURAL SCIENCES, University of Zenica , Zenica , Bosnia and Herzegovina

Abstract

Steels for screws, nuts and rivets are usually low carbon steels, carbon steels or quenched and 
tempered low alloy steels. From these are required precisely defined strength properties, hardness 
and toughness, which determine the so called class strength of screws. 
This paper describes the thermal treatment of hexagonal screws with strength class according to DIN 
ISO931/8.8 or14014. 
In addition, this paper also provides information about heating aggregate, ie flow furnace with 
protective atmosphere in which screws were heated, followed after what in technological line, was 
automatically done quenching in oil. 

References

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B. Križan i S.Zelenika: Konstrukcijski elementi I, Tehnički fakultet Rijeka. 2011;
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M.Oruč Fb. I.Vitez, R.Sunulahpašić: Čelik i čelični liv. 2008.
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N.Haračić: Bor i niskolegirani čelici za cementaciju i direktno kaljenje. Mašinstvo. 2002;4(6):215–26.
4.
In: EN 10269. 2008.
5.
Atlas of Microstructures of Industrial Alloys. 1972;7.

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