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assemblies, both of which had inherent shortcomings. One is an L-shaped CI tube which lasts an average of seven to eight days. Although a low-cost option, this type of assem- bly requires a protective coating, which represents additional work, while the subsequent chance of metal contamination, which is very high, could compromise the quality of the end casting. Te second product being used is silicon nitride (SS316) which, although it has a recommended operational life of nine months, carries a high purchase cost and has considerably lower impact resistance, making it very vulner- able to breakage during the aluminum pouring process. Te trial involved Morgan’s innovative Blue Lightning


thermocouple sheath supplied as a complete pyrometer assembly, which was installed in a 500-kg furnace for four months. Te recommended life of the Blue Lightning is 42 to 48 days, but at the end of the 122-day trial, the sheath was still fully functional and capable of continuing in operation. “Te thermocouple assembly performed well throughout the


trial, maintaining and controlling the temperature in the holding furnace,” said Sambhaji Bachkar, HTTS maintenance manager who oversaw the trial


“When we removed it from the furnace,


it was still in good condition, with no signs of deterioration.” Robustly designed for extended service life, the Blue Lightning delivered a number of benefits for HTTS. “Apart from the extended life of the product, it proved to be a cost-effective solution in a number of other ways,” said Ramdas Chitalkar, technology manager at Morgan Advanced Materials. “Tere was no need for any additional coating, which requires time and manpower, so changeover time is reduced. And there is no danger of metal contamina- tion, which has an impact on the end quality of the casting, so the risk of rejects is minimized.” Blue Lightning Termocouple Sheaths are available with either a ½-in. BSP pipe, ¾-in. NPT pipe or without a pipe as a straight ceramic sheath for higher-temperature copper applications. Te pipe versions also are available as a complete pyrometer assembly to help speed up installation and reduce installation costs. Te assemblies are specifically designed to provide a quick and technician-free change out of the existing pyrometer. Design features include non-wetting chemistry for ease of cleaning, low dross build-up and elimination of metal contamination. Highly conductive, they deliver rapid response times, reduced fuel usage and good thermal shock resistance. Te assemblies can be used in applications which require either a


fixed or a floating pyrometer.  For further information visit www.morganmms.com.


这种装置需要保护涂层,增加了工作量,还会导致非 常高的污染金属的可能性,因此,使最终铸件的质量 打了折扣。第二种是氮化硅(SS316),其推荐使用 寿命为9个月,但购买成本高且抗冲击性相当低,使 它在铝合金浇注过程中非常容易破裂。 该试验使用了摩根公司创新的蓝色发光热电偶套 管,是随整体的高温计装置提供的,将其安装在容量 为500Kg的熔炉中达4个月。蓝色发光套管的推荐使 用寿命为42-48天,但在为期122天试验之后,该套 管仍旧保持完好,并可继续使用。


“热电偶装置在整个试验中表现良好,保持和控 制了保温炉中的温度,”HTTS负责监管该试验的设 备维护经理Sambhaji Bachkar说:“当我们把它从 保温炉中取出时,它仍处于良好的状态,没有任何 损坏的迹象。”


为延长使用寿命而设计得很坚固,蓝色发光套管


为HTTS公司提供了很多优势。“除延长了产品使用 寿命外,事实证明,在其他许多方面都是有成本效益 的解决方案,”摩根先进材料公司技术经理Ramdas Chitalkar说:“不需要其他费时费力的额外的涂料, 因此,减少了更换的时


在应用于温度较高的铜合金时,蓝色发光热电偶 套管可以与0.5英寸BSP管,0.75英寸NPT管配合使 用,也可以不用管子作为直接的陶瓷套管使用。也可 将其他套管用于完整的高温计装置,有助于加快安装 速度,降低安装成本。高温计装置是特别设计的,替 换现用的高温计时,可以很便捷,而且不需要技术 人员。设计特点包括采用不湿润的化学材料以便于清 理,粘附的熔渣很少,不污染金属。它们具备高导电 性,反应时间快、燃料使用减少且具有良好的耐热震 性能。这些装置可用于需要固定安装或浮动高温计的 应用中。 


更多信息,请访问:www.morganmms.com.


3-D Printing and Simulation-Driven Design Push the Limits for High Performance Castings


3D打印结合模拟驱动的设计灵感推进了高性能铸件的极限 Altair, Click2Cast, HBM nCode, and voxeljet


have collaborated on a new design and manufactur- ing process combining the freedom of 3-D printing for innovative mold making with a simulation driven


June 2015 FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 83


Altair(澳汰尔)、Click2Cast(两点铸造) 、HBM nCode(恩科)及voxeljet公司已经就一项 新的设计和制造工艺开展了合作,该工艺结合了3D


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