components for cutting titanium plates
The welding function of cutting titanium plate should represent these aspects:
(1) Cracks due to high temperatures
The cracks associated with welding are the high-temperature cracks indicated above. Condensation cracks, microcracks, HAZ (heat-affected zone) cracks, and reheat cracks are the four general categories of high-temperature cracks.
(2) Low-temperature cracks: Ferrite-cut titanium plates with martensite arrangements and martensitic-cut titanium plates can occasionally develop low-temperature cracks. Because hydrogen dispersion, the degree of restraint of the welded joint, and the hardening arrangement therebetween are the primary contributors to its occurrence, reducing hydrogen dispersion during the welding process and performing preheating and post-weld heat treatment appropriately should be the solution.
(3)Austenitic cut titanium plate, ferrite cut titanium plate, and dual-phase titanium plate are all susceptible to "phase embrittlement" . "Phases are typically separated in the region of 600-900°C, notably around 75°C. Because a small percentage of the alpha phase is split in the arrangement, the tolerance is greatly decreased. The amount of ferrite in the austenitic cut titanium plate should be as low as feasible as a preventive measure to prevent the occurrence of phases.
(4) Bristling at 475 °C. The Fe-Cr alloy decomposes into a solid solution with low chromium concentration and a solid solution with high chromium concentration when held for an extended period of time near 475°C (370-540°C). As the amount of chromium in the solid solution exceeds 75%, slip deformation transforms into twin deformation, which leads to embrittlement at 475°C.
