TPT May 2011

与全部配件相关的仪表使CMS能为客户的涡流和超声波检查要求提供最好的解决方案。 公司的涡流范围包括Zet@牌单通道或多通道仪表、专用软件、实时可视化高速数据采集系统以及一些配件， 像旋转头、旋转系统、磁化和退磁装置、涡流探头和用于特殊应用和标准应用的线圈等。 超声波范围包括usc-100超声仪以及检查管道的。管道检查用超声波旋转头有6到130毫米不同的尺寸大小， 用于内部缺陷、厚度以及直径测量。它提供高精度检查和准确的缺陷检测（5%壁厚和±2µm测量精度）。 Fax: +33 3 8594 1415 Email: contactcms@cmseddyscan.com Website: www.cmseddyscan.com - - - - - - - - - - - - - - - - Germany Stand TBC Bültmann GmbH COPPER tubes for sanitary and industrial purposes require fine-grained microstructures. The disadvantage of the widely used production process (casting, extruding, drawing) is a comparatively large eccentricity of extruded tubes, which cannot be completely eliminated by drawing. Another production process includes casting thick-walled tubes, peeling the outer surface, reducing by roll- ing and drawing. Due to the heat generated during rolling, the tubes are soft-annealed. Disadvantages here are that the annealing conditions are not controllable, resulting in differing results. Furthermore, high-priced pierce rolling mills are mono-plants: dimensional changes require expensive tools and extended changeo- ver times. Bültmann has developed a cast and draw production process for copper tubes that displays none of these disadvantages. The process allows casting of tubes, regardless of wall thickness. Thin-walled tubes can be cast and then machined on drum-type drawing machines, and eccentricity is claimed to be virtually non existent. Peeling of the surface is performed by two methods. Generally it is carried out using millers or peeling ma- chines. The outer surface of thin-walled cast tubes, however, can also be peeled with shaving tools, so that additional equipment is not required. Drawing of cast tubes is carried out on conventional machines such as drawbenches and drum-type draw- ing machines, and annealing or continuous annealing is used to generate the fine grain structure required. In furnaces, annealing parameters can be strictly observed and adjusted. The individual production steps are carried out successively and are adjustable according to the particular conditions, resulting in consistent quality. Observing this process, Bültmann carried out trials with thick-walled cast tubes, which were drawn with dif- ferent reduction parameters and subsequently annealed. At a certain reduction degree, a fine-grained result was achieved. The new cast and draw production process combines simple, well-known operations, without requiring ex- pensive, energy-intensive extrusion presses or rolling mills. Компания Bültmann GmbH Для медных труб, используемых в санитарно-техническом оборудовании и промышленности, требуется мелкозернистая структура. Недостатком процессов, используемых для их производства (литье, прессование, волочение), является сравнительно большая разностенность прессованных труб, которую невозможно полностью устранить волочением. Еще один производственный процесс включает литье толстостенных труб, зачистку наружной поверхности, редуцирование при прокатке и волочении. Из-за тепловыделения в процессе прокатки трубы подвергаются смягчающему отжигу. В данном случае недостатком является отсутствие контроля условий отжига, что приводит к различным нежелательным результатам. Кроме того, дорогостоящие прошивные станы являются моно-установками: переход на новый размер требует использования дорогостоящих приспособлений и увеличивает время перенастройки. Компания Bültmann разработала процесс производства медных труб способом литья и волочения,