How to translate hydrogen ingress?
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While translating the welding precautions for a certain part, I came across this term. The previous sentence read: When using an oxy-acetylene flame for welding, try to avoid contact with grease or water; otherwise, hydrogen ingress may occur. I don’t understand what \"hydrogen ingress\" means, and I couldn’t find any information on it. What I saw online the most was the term \"hydrogen ingress\", but I’m not sure how to interpret this phrase. Having searched through many materials related to welding and oxy-acetylene flames, I still don’t know what compound is involved or what reaction takes place. I’m seeking help here; thank you.
Hydrogen ingress = Hydrogen entry (\"ingress\" is a noun meaning \"entry\"); this situation should also be avoided
Carbon and carbon-manganese steels, as well as weld metals, are susceptible to hydrogen intrusion from various sources. The two main sources are the entry of atomic hydrogen into the piping material and weld metal due to the processing of reservoir fluids, and the intrusion of hydrogen resulting from the presence of moisture during the welding of process piping. It seems that hydrogen intrusion is related to the humidity at the site; I hope this helps~
A poor welding environment affects the quality of welding. Otherwise, it leads to the entry of hydrogen.
Either hydrogen present in the electrode coating or a humid working environment can introduce hydrogen into the molten pool, resulting in hydrogen ingress into the metal being welded. The absorption of hydrogen atoms causes the weld to become highly brittle, and its strength drops significantly.
Thank you all for the suggestions; I’m very grateful. According to available information, the following description is given: For welds of carbon steel and low-carbon steel, if the hydrogen content is high, bright circular areas of localized brittle fracture often appear on the cross-sections of their tensile test specimens; similar \"hydrogen embrittlement\" phenomena also occur in other metals. Thank you again to cjzhou2 for their help; they are extremely professional.
The entry of hydrogen causes pores in the weld and affects its toughness and strength. It will affect the mechanical properties of the weld.
It means hydrogen enters the weld, right? This will lead to hydrogen embrittlement