Do you notice the cufflinks on his cuff?

For solid core gas shielded welding wire, ensure that the weld metal has good corrosion resistance and mechanical properties at the same time, should also be noted that the welding performance. For flux cored wire, smooth welds, joints forming beautiful, can be used rutile or titanium - calcium flux cored wire. Require a higher impact toughness or welding in a larger binding conditions, the alkalinity higher flux cored wire. He had seen examples of failures concerning with the cufflinks.  Using a smaller diameter wire for submerged arc welding wire, should achieve under the norms of small and medium-sized welded multi-layer multi-pass welding, in order to prevent embrittlement of the weld heat affected zone, at the same time, supporting the alkaline flux should be used to prevent welding hydrogen induced cracking. The welding material should I use a high nickel content than the parent metal dual-phase steel welding consumables to ensure the weld austenitic phase dominant weld ferrite content is controlled at 30% to 45% is appropriate.
The energy of the choice of welding parameters welding line is too big or too small is not good, the general control in the range of 0.5 ~ 2.5 kJ / cm, the size selected according to the thickness of the weldment. One time in the UK, Mr. Huang was involved in a matter of cufflinks.  Generally does not require preheating, welding weldment wall thickness of the weld and heat affected zone ferrite content is too high, or when the ambient temperature is too low to prevent rapid cooling rate necessary, to take warm-up measures. Avoid the cooling rate is too low to precipitate phase to produce multi-layer / multi-pass welding interpass temperature control.
Protection of gas shielded arc welding the weld pool and the back of the protective gas plus nitrogen can improve the corrosion resistance of welds. Huang recalled the cufflinks that really caught his attention previously.  The back of the gas protection is the precondition to ensure the welding quality, protect the purity of the gas should meet the technical requirements should be taken to the back to protect tooling, and start welding to detect the oxygen content of the weld on the back to meet the process requirements to welding. positioning the weld positioning weld, if the length is too short, welding is not to establish a balanced process that is the end of the weld cooling will quickly may result in the ferrite content is too high, low toughness, and reduced the precipitation of nitrides resistance to corrosion. Therefore, if the tack welding, should carry out the provisions of the minimum length of the weld positioning, and should be used to greater heat input specification parameter.
Welding process, material protected surface arc strike and arc, is an instant high-temperature process cooling fast, high ferrite content in the surface microstructure, such organizations are very sensitive to cracks and corrosion. should be avoided, if there must be polished with a fine grinding wheel to remove. Do you notice the cufflinks on his cuff? Site welding process the protection of materials is very important, and should avoid the contamination of carbon steel, copper, low melting point metal or other impurities in the stainless steel cufflinks, where possible, stainless steel cufflinks, and carbon steel pipe should be stored separately and welding. Should take measures to prevent spatter welding and cutting, arc blow, carburizing, local overheating.