Author(s)

Zhaohua Zhu ¹

Affiliation(s)

¹ Thyssenkrupp Nucera (Shanghai) Co., Ltd., Shanghai, China

Corresponding Author

Zhaohua Zhu

ABSTRACT

In order to effectively prevent safety accidents in chemical production and ensure the safety, reliability and service life of chemical equipment operation, high attention should be paid to welding quality during on-site installation. Based on the actual conditions of on-site installation and welding of chemical equipment, this article systematically reviews five typical defects, namely cracks, porosity, slag inclusions, incomplete fusion, and undercut, and their causes, and proposes a full life cycle prevention and control system for welding defects, focusing on pre-welding preparation, welding process monitoring, post-welding detection and analysis, and defect repair. This approach effectively mitigates adverse impacts stemming from complicated site conditions, variable operational environments and unpredictable human factors during welding defect prevention and control, thereby guaranteeing the inherent safety of welding quality.

KEYWORDS

Chemical equipment; On-site installation; Welding defects; Cause analysis; Quality control

CITE THIS PAPER

Zhaohua Zhu. Cause analysis and preventive control strategy of welding defects in on-site installation of chemical equipment. Journal of Electrotechnology, Electrical Engineering and Management (2026). Vol. 9, No.1, 58-63. DOI: http://dx.doi.org/10.23977/jeeem.2026.090107.

REFERENCES

[1] He Chengrong. Process optimization and practice of dissimilar Material welding in Chemical Equipment installation [J]. Installation,2026(1):91-93.
[2] Wang Nan. Analysis of Quality Control of Welding Technology in Chemical Equipment Installation [J]. Chinese Journal Database (Citation Edition) Engineering Technology,2025(2):115-118.
[3] Liu Bo. Research on Welding Technology and Defect Prevention Technology of Static Equipment in Petrochemical Industry [J] China Science and Technology Journal Database Industry A,2025(9):156-159.
[4] Tan Yucai. Research on Welding Quality Control Methods in Chemical Equipment Manufacturing process [J]. Chinese Journal Database (Abstract Edition) Engineering Technology,2025(8):169-172.

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