CCT-Diagram - Scientific Microstructures formed corresponding to the thermal cycle were also calculated based on the continuous cooling transformation (CCT) diagram. The method mentioned above was applied to welds of Ultra-Narrow Gap welding process, which was developed for welding of ultrafine-grained steels.[PDF] A CCT Diagram for an Offshore Pipeline Steel of X70 Type ing transformation (CCT) diagram valid for the heat-affected zone (HAZ) in welding operations with rel- atively rapid heating up to about 1200oC on an offshore pipeline steel of X70 type has been established along with the linear thermal expansion co- efficients for the austenite and bainite phases. A dilatometer was built for this purpose.[PDF] Continuous Cooling Transformation (CCT) Diagrams CCT diagram. This diagram is not a unique diagram like TTT diagram for a material. It depends on type of cooling. This diagram can predict phase transformation information if similar cooling curves had been used during its determination or if equivalent cooling schedule are used during process of production. 11 Heat Affected Zone and Weld Metal Properties in Welding of Oct 01, 2016Heat Affected Zone and Weld Metal Properties in Welding of Steels . There are many factors which control the properties of the weld metal and heat affected zone (HAZ) while welding of carbon (C) and low alloy steels. a continuous cooling transformation (CCT) diagram is more appropriate to be used to predict the microstructures in the HAZ[PDF] NUMERICAL AND EXPERIMENTAL STUDY OF PHASE welding by using a high speed and a high power heat source. The prediction of the structure composition in laser welded butt-joint made of S460 steel is performed, where phase transformations are calculated on the basis of modified numerical CCT diagram of S460 steel and final fractions of SMPS Welding Inverter Circuit | Homemade Circuit Projects Jul 03, 2019My welding machine Fronius-TP1400 is fully functional and I have no interest in changing its configuration. This machine that has an age is the first generation of inverter machines. It is a basic device for welding with coated electrode (MMA welding) or tungsten arc gas (TIG welding). A switch allows the choice.