KR970020286A - Welding Quality Evaluation Method - Google Patents

Welding Quality Evaluation Method Download PDF

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Publication number
KR970020286A
KR970020286A KR1019950035484A KR19950035484A KR970020286A KR 970020286 A KR970020286 A KR 970020286A KR 1019950035484 A KR1019950035484 A KR 1019950035484A KR 19950035484 A KR19950035484 A KR 19950035484A KR 970020286 A KR970020286 A KR 970020286A
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KR
South Korea
Prior art keywords
welding
welded
welding quality
seam
per unit
Prior art date
Application number
KR1019950035484A
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Korean (ko)
Other versions
KR100237153B1 (en
Inventor
강문진
김기철
Original Assignee
김종진
포항종합제철 주식회사
신창식
재단법인 산업과학기술연구소
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Application filed by 김종진, 포항종합제철 주식회사, 신창식, 재단법인 산업과학기술연구소 filed Critical 김종진
Priority to KR1019950035484A priority Critical patent/KR100237153B1/en
Publication of KR970020286A publication Critical patent/KR970020286A/en
Application granted granted Critical
Publication of KR100237153B1 publication Critical patent/KR100237153B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
    • B23K31/125—Weld quality monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/25—Monitoring devices
    • B23K11/252—Monitoring devices using digital means

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

본 발명은 심(seam)용접을 할 경우 용접된 상태의 용접부 품질을 판정하는 방법에 관한 것으로 피용접물의 전기저항에 의한 발열을 이용하여 용접을 행하는 심 용접의 판폭방향 단위길이당 용접품질의 상태를 진단하는 용접품질 판정방법에 있어서 용접전압 E, 용접전류 I, 전극 가압력 P, 용접속도 S, 랩량 L을 계측, 이를 토대로 단위 랩량, 단위 판폭 길이당 입열량 dQ/dx를 계산하고, 용접해야 할 피용접물의 재질과 두께에 따른 상기 계측 및 계산치들에 대한 기준설정치와 허용범위를 각각 설정해 두고 상기 계측 및 계산치들과 기준 및 허용범위를 비교하여 그 허용범위를 벗어난 경우 용접상태 이상이라고 용접품질을 판정하는 것이다.The present invention relates to a method for determining the weld quality in the welded state when seam welding, the state of the welding quality per unit length of the width direction of the seam welding seam welded by using the heat generated by the electrical resistance of the welded In the welding quality determination method for diagnosing the welding voltage, the welding voltage E, the welding current I, the electrode pressing force P, the welding speed S, and the lap amount L should be measured, and the unit lap amount, the heat input amount per unit width dQ / dx should be calculated and welded. Set the standard set value and allowable range for the measured and calculated values according to the material and thickness of the welded weld, and compare the measured and calculated values with the standard and allowable range. To determine.

Description

용접품질 평가방법Welding Quality Evaluation Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명을 실시하는데 사용된 장치구성도,1 is a device configuration diagram used in practicing the present invention,

제2도는 용접속도와 용접전류에 따른 용접가능범위의 예시도,2 is an illustration of the weldable range according to the welding speed and the welding current,

제3도는 심 용접시 발생하는 동저항치를 나타낸 상태도,3 is a state diagram showing the dynamic resistance value generated during seam welding,

제4도(가)∼(바)는 본 발명에 있어서 용접전압 E, 용접전류 I, 전극 가압력 P, 용접속도 S, 랩량 L 및 단위 랩량, 단위 판폭길이당 입열량의 계측 및 계산결과를 나타낸 그래프,4A to 4B show the measurement and calculation results of the welding voltage E, the welding current I, the electrode pressing force P, the welding speed S, the lap amount L and the unit lap amount, and the heat input amount per unit plate width in the present invention. graph,

제5도는 제4도에서 구한 각종 데이타에 입각하여 용접품질의 양, 부를 판정하는 알고리듬,5 is an algorithm for determining the quantity and quality of welding quality based on various data obtained in FIG.

제6도는 종래의 용접품질 평가장치 구성도.6 is a block diagram of a conventional welding quality evaluation apparatus.

Claims (1)

피용접물의 전기저항에 의한 발열을 이용하여 용접을 행하는 심 용접의 판폭방향 단위길이당 용접품질의 상태를 진단하는 용접품질 판정방법에 있어서 용접전압 E, 용접전류 I, 전극 가압력 P, 용접속도 S, 랩량 L을 계측, 이를 토대로 단위 랩량, 단위 판폭 길이당 입열량 dQ/dx를 계산하고, 용접해야 할 피용접물의 재질과 두께에 따른 상기 계측 및 계산치들에 대한 기준설정치와 허용범위를 각각 설정해 두고 상기 계측 및 계산치들과 기준 및 허용범위를 비교하여 그 허용범위를 벗어난 경우 용접상태 이상이라고 용접품질을 판정하는 것을 특징으로 하는 용접품질 평가방법.Welding quality E, welding current I, electrode pressing force P, welding speed S in the welding quality determination method for diagnosing the state of the welding quality per unit length in the width direction of the seam of the seam welded by using heat generated by the electrical resistance of the welded object. Calculate the lap amount L, and calculate the unit lap amount and the heat input value per unit width dQ / dx, and set the reference set values and allowable ranges for the above measurements and calculations according to the material and thickness of the welded object to be welded, respectively. The welding quality evaluation method, characterized in that the welding quality is determined to be in a welding state when the measurement and the calculated values and the standard and the allowable range are out of the allowable range. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950035484A 1995-10-14 1995-10-14 Method of welding quality KR100237153B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950035484A KR100237153B1 (en) 1995-10-14 1995-10-14 Method of welding quality

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950035484A KR100237153B1 (en) 1995-10-14 1995-10-14 Method of welding quality

Publications (2)

Publication Number Publication Date
KR970020286A true KR970020286A (en) 1997-05-28
KR100237153B1 KR100237153B1 (en) 2000-01-15

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Application Number Title Priority Date Filing Date
KR1019950035484A KR100237153B1 (en) 1995-10-14 1995-10-14 Method of welding quality

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101328710B1 (en) 2007-12-14 2013-11-11 현대자동차주식회사 Method for monitoring of spot welding
KR102328306B1 (en) 2017-12-27 2021-11-17 대우조선해양 주식회사 Method for estimating seam weld penetration depth
KR102400012B1 (en) 2017-12-28 2022-05-20 대우조선해양 주식회사 Method for diagnosing seam weld quality

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