QE2 Starboard High Pressure Turbine Pattern

One of the few remaining three-dimensional representations of large turbines which originally powered the famous ship QE2. Wooden shapes like this were essential to marine engineering: they were used in casting, which is the process of turning molten metal into a specific shape. A pattern is a replica of the object to be cast. Patterns are made by a patternmaker to the dimensions on the engineer's plans. It is a very skilled trade which requires precision: the better the pattern the better the casting. Sand is poured around the patterns and compacted. The patterns are removed and molten metal is poured into the gaps left by the removal of the pattern and left to cool. This results in the finished object. In this case the finished object was the Pametrada steam turbine fitted to Queen Elizabeth 2. QE2 was built by Clydebank shipbuilder John Brown & Co in 1969. Its turbines were removed when it was re-engined in 1986/87, and they were replaced with a more modern and efficient diesel power plant. Source: Objaverse 1.0 / Sketchfab现存为数不多的、曾为著名邮轮伊丽莎白女王2号（QE2）提供动力的大型涡轮机三维复刻模型之一。此类木质模件（pattern）在船舶工程领域至关重要，被广泛应用于铸造工艺——即将熔融金属浇筑为特定形状工件的工序。 所谓模件，即待铸造工件的复制品。模件由模具技师严格依照工程图纸的尺寸制作而成，这是一门对精度要求极高的技艺：模件精度越高，最终铸件的品质也就越优异。具体制作流程为：将砂石浇筑于模件四周并压实，随后取出模件，将熔融金属注入模件移除后留下的空腔，待其冷却凝固后即可得到成品工件。 本数据集收录的成品工件，即为安装于伊丽莎白女王2号的帕梅特拉达型蒸汽涡轮机。QE2由克莱德班克造船商约翰·布朗公司（John Brown & Co）于1969年建造，1986至1987年间该船进行动力升级时拆除了原有涡轮机，替换为更具现代化且效率更高的柴油动力装置。 数据来源：Objaverse 1.0 / Sketchfab