Quality control at the shipbuilding giant “Krasnoe Sormovo Plant”
When manufacturing single cast products, it is unprofitable to make special quality control devices, and it is more efficient to resort to 3D scanning. This was done at the Nizhny Novgorod shipbuilding plant, part of the USC.
Tankers built at Krasny Sormovo have been named "Significant Ships of the Year" several times by the English Society of Ship Engineers (RINA). The share of products in the segment of river-sea vessels with a deadweight of up to 13,000 tons has been about 40% over the past 3 years. The company closely monitors the manufacturability of production processes, therefore, it is familiar with contactless quality control with optical 3D scanners firsthand.
RangeVision engineers went to the factory to scan the hub of the adjustable pitch screw. The outer diameter of the product was 800 mm, and the height was 700mm. The foundry's technologists set the minimum allowances for its landing diameters to reduce the casting weight and reduce the cost of machining. In addition, for the first time in the practice of manufacturing such parts, some of the internal surfaces were completely finished. Therefore, the requirements for the quality of model tooling and mold assembly have increased.
It was preferable to check the actual dimensions of the experimental casting by 3D scanning, because it gives an idea of the geometry of the entire product. Without digitization, the OTC service would have to work only with individual dimensions or cross-sections.
Many components for marine engineering are made by casting. Typical parts: bracket legs, cleats, fairings, blades, screws, body fittings have a complex spatial configuration, so their control by mechanical means is difficult. Previously, it was possible only after grinding in a machining shop or even on a slipway, often months after receiving products from the foundry. Therefore, 3D scanning is now recognized worldwide as the optimal intermediate method for monitoring such details.
