How to weld > Welding defects and discontinuities
Porosity
Read about possible causes and suitable actions to avoid them
Cause
- Impurities in the joint (moisture, oil, corrosion, etc.)
- Disturbing breeze
- Too high gas flow
- Too low gas flow
- Shielding gas contaminated (equipment)
- Injector effect
- Surface coating (zinc, primer)
Remedial actions
- Keep the joint free from any impurities
- Control the equipment
- Control the gas flow
- Welding technique (torch angle)
- Remove surface coating
The information in this report is only applicable to SSAB’s products and should not be applied to any other products than original SSAB products.
This report provides general results and recommendations for SSAB steel products. This report is subject to SSAB’s Terms of Use. It shall be the user's responsibility to verify that the information contained herein is correct and is suitable to be used for the particular purpose and application of the user. The report is intended to be used by professional users only who possess adequate expertise, qualification and knowledge for the safe and correct use of the results and recommendations in this report. This report is provided “as is”. The use of the report is at user’s own discretion and risk and that users will be solely responsible for any use of this report. SSAB disclaims any liability for the content or potential errors of this report, including but not limited to warranties and condition of merchantability or fitness for a particular purpose or suitability for individual applications. SSAB shall not be liable for any kind of direct or indirect damages and/or costs related to or arising therefrom, whether special, incidental, consequential or directly or indirectly related to the use of, or the inability to use, the report or the content, information or results included therein.