Welding S304H and HR3C with R1

In welding, austenitic and nickel-based materials such as S304H and HR3C tend to form hot cracks in the micro-structure range. These micro-cracks develop straight after welding and may be the starting point for larger cracks under boiler operations. Cracks result in component failure and, as a consequence, in major repair steps. The welding parameters are primarily responsible here. In particular, heat input, which is calculated from amperage, voltage and welding speed, impacts on micro-crack formation. The greater the heat input (welding parameters), the greater the risk of hot crack susceptibility. Meeraner Dampfkesselbau GmbH's innovation lies in exchanging the inert gas deployed. To find out more, please download this free white paper.