The purpose of the work was to determine the possibility of the regenerative surfacing of the upper surface of screw conveyor coils. The screw conveyor, used for the transport of bulk materials in a ...corrosive environment, was originally surfaced with chromium cast iron. The research work discussed in the article resulted in the development of a MAG method-based technology enabling the repair surfacing of screw conveyor coils. The technology involved the use of an EnDOtec DO*11 flux-cored wire and required the previous removal of the hardened upper layer.
The purpose of the work was to determine the possibility of rebuilding of the screw coils upper surface of a screw conveyors welded previously with chromium cast iron. The variant of surfacing ...directly on the residues of the hard layer and with the buffer layer was considered. The technology of hardfacing the coils after removal of the hardening upper layer and the technology of welding of new elements with the use of EnDOtec DO*390 powder wire has been developed to provide a NanoAlloy structure with boron nanocarbons in the iron matrix.
W artykule przedstawiono wyniki badań wg PN-EN ISO 17652-2:2009 oraz Pn-En ISO 15614-1:2008/A2:2012 farb gruntowych: MP 61-9006/0, MP75-3009, SP01- 81401, WG 26-8140/2 prod. Lankwitzer Lackfabrik ...GmbH oraz farby Rawomal P prod. Radomskiej Fabryki Farb i Lakierów RAFIL S.A., przeznaczonych do czasowego zabezpieczania konstrukcji stalowych podlegających na- stępnie spawaniu bez usuwania powłoki. Suitability of primers for steel components welded without removing the primer Abstract The article presents the results of weldability tests acc. to PN-EN ISO 17652-2:2009 and PN-EN ISO 15614-1: 2008/A2:2012 of the following primers: MP 61-9006/0, MP75-3009, SP01-81401, WG 26-8140/2 made by Lank- witzer Lackfabrik and Rawomal P made by Radomska Fabryka Farb i Lakierów RAFIL. These primers are used for temporary protection of steel structures on different production stage before welding. Primers are not removed prior to welding.
The course of overlay welding technology qualification using welding procedure test according to the PN-EN ISO 15614-7 specifications is described. How the preliminary welding procedure specification ...(pWPS) should be prepared is clarified and the type of test pieces as well as the type of tests that should be carried out after overlay welding are presented. The criteria to be met by test pieces so that the welding procedure may be qualified as acceptable are discussed. The qualification range and the details of the welding procedure qualification record (WPQR) also presented. Numerous examples of overlay welding procedure qualification tests, carried out at the Welding Institute are described.
The article presents test results concerning the quality of ISO 14341-A-G3Si1 and G4Si1 electrode wires based on electrode wire-related quality criteria in accordance with the requirements specified ...in the PN-EN ISO 14341 and PN-EN ISO 544 standards. The article discusses the critical defects of the wires (non-conformities with standard requirements) as well as defects not covered by the requirements of the standards, yet decisive as regards the assessment of electrode wires by the user.
The article describes the advantages of laser + MAG hybrid welding method. The results of research hybrid welding of 5 + 5 and 5 + 7 mm butt joints S960QL steel and strength and toughness tests of ...obtained joints were presented. Testing of 5 + 7 mm thick butt joints showed that it meets the requirements of the PN-EN ISO 15614-14 standard. in polish Spawanie hybrydowe laser + MAG elementów urządzeń dźwigowych wykonanych ze stali ulepszonej cieplnie S960QL W artykule opisano zalety metody spawania hybrydowego laser+MAG. Przedstawiono wyniki badań spawania hybrydowego złączy doczołowych 5 + 5 i 5 + 7 mm ze stali S960QL oraz wyniki badań wytrzymałości, udarności i twardości uzyskanych złączy. Badanie złącza doczołowego blach o grubości 5 + 7 mm wykazało, że spełnia ono wymagania PN-EN ISO 15614-14.
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