[ Article ]

Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 2, pp.99-103

ISSN: 2508-5107 (Online)

Print publication date 15 Apr 2018

Received 18 Sep 2017 Revised 03 Jan 2018 Accepted 08 Mar 2018

DOI: https://doi.org/10.7735/ksmte.2018.27.2.99

SPFC 590 강재의 저항 점 용접 특성에 관한 연구

김대환^a ; 강태종^b ; 신석우^c ; 박상흡^b^{, *}

Resistance Spot Welding Characteristics of SPFC 590 Steels

DaeHwan Kim^a ; TaeJong Kang^b ; SeokWoo Shin^c ; SangHeup Park^b^{, *}

aChungnam Institute for Regional Program Evaluation, 277, Cheonan-daero, Dongnam-gu, Cheonan, Chungnam-do, 31212, Korea
bDepartment of Mechanical and Automotive Engineering, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan, Chungnam-do, 31080, Korea
cKorea Institute of Industrial Technology, 89, Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan, Chungnam-do, 31056, Korea

Correspondence to: ^*Tel.: +82-41-521-9283, Fax: +82-41-521-9418, E-mail address: weldpark@kongju.ac.kr (SangHeup Park).

Abstract

Fossil fuel depletion and environmental pollution have led to the enforcement of strict regulations. In many countries, there is a need to improve fuel efficiency by more than 40% to achieve the carbon emission reduction target to be imposed in 2025. To improve fuel efficiency, the weight of automobiles is being reduced by using lightweight material such as aluminum or magnesium alloys for the body, developing molding and machining technologies, and optimizing the shape of existing parts. Body weight reduction is the most efficient way to reduce the automobile weight, thereby saving fuel by maximizing the engine efficiency. High strength steel can also be used to save weight, as it can be made thinner, and therefore lighter. Herein, the welding characteristics of SPFC590 1.2 t steel were analyzed. The quality of the resistance spot welded part was predicted by analyzing the dynamic resistance pattern.

Keywords:

Current, Dynamic resistance pattern, SPFC 590, Resistance spot welding, Waveform

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