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Analysis of marine diesel engines shows, that high-loaded parts, uses in their constructions (pistons, valves, valve lands) and in constructions of coolers (tube plates of heat exchangers), can break before the planning engine overhaul. For this purpose, it is necessary to withdrawal these constructions for repairing high-loaded parts and as result is a financial loss. JSC SSTC engineers set the tasks for the development of high-efficient technologies based on the production tasks for quality development of engine and related systems. One of the ways of solving these tasks was the laser technologies application. Main advantages of laser technologies comparing to conventional arc techniques are high processing speed, minimal heat affected zone, low requirement of welding consumables and practical absence of welding deformations, which considerably reduced due to low heat input (several times less, than with conventional arc method). Although laser technologies are a complicated multi-parameter process, their massive implementation is one of the ways to improve quality in shipbuilding and heavy engineering production. The article describes the experience of Laser Shipbuilding Centre in technological development of tube plates laser welding and engines valves laser cladding, and in particular divulges: equipment’s capabilities, specifics and principles of operation; the procedure of technologies development; technological innovations allow to reach a solution of the tasks; the effects of technological parameters on the features of the processes; results of the researches.

vestnik gosudarstvennogo universiteta morskogo i rečnogo flota imeni admirala s. o. makarova/vestnik gosudarstvennogo universiteta morskogo i rečnogo flota imeni admirala s.o. makarova

DEVELOPMENT OF HIGH-EFFICIENT LASER WELDING AND CLADDING TECHNOLOGIES FOR THE CURRENT SHIPBUILDING