product news/產品新聞
the surface, the dry ice Micro Particles sublimate, leaving no secondary waste or residue. Te metalcasting facility tested a Cold Jet i3
MicroClean®MicroParticle dry ice cleaning system and used it to the clean their most delicate screen vents at full power. Even at maximum blast aggression, the parts were not damaged and the molds looked brand new. Te company invested in the Cold Jet system immediately after the dem- onstration and saw an ROI in just one month. It used to take three workers approximately 3-4 hours to
clean one or two molds, but now it only takes a single worker 10 minutes. Te tooling supervisor estimated they are saving $400- $500 per mold with a Cold Jet dry ice blasting system.
铸造厂测试了Cold Jet公司的i3
MicroClean®MicroParticle干冰清理系统，并用它 以满功率来清洁最易损的通风孔和隔板。即使最大 的喷射功率，喷射部分没有损坏而且模具看起来焕 然一新。测试后，公司立刻购买了Cold Jet公司的清 理系统，在短短一个月内就看到了投资回报。 以前需要3名工人约3-4小时清理1-2个模具，现 在只需要1个工人10分钟。模具主管估计，用Cold Jet的干冰喷射系统，每个模具的清理费用将节省 400-500美元。
Thermal Regeneration for Nobake Sand with Heat Recovery 自硬砂热法再生的余热回收
Sogemi Engineering, Milan, Italy, started developing
Simplex, a thermal regeneration plant, in the 1990s. Tis system had been designed after many studies and experience with the aim to have a reliable plant with high performance at the lowest operative cost with the ability to solve the problems of metalcasting facilities of chemically bonded sand discharge. With thermal regeneration, the casting facility will elimi- nate the cost of discharge of exhausted sand and the cost of buying new sand. Te sand inside the thermal regenera- tion plant has to be in granular size and free of any metallic particles. According to the quantity of resin contained in the sand, the temperature inside the combustion chamber will be between 1,292-1,472F (700-800C), to avoid any emission of pollutants and to reach the requirement in loss of ignition. Te Sogemi plant features:
• Fluidized bed combustion chamber. • Energy recovery with heat exchange between calcinated hot sand coming from the combustion chamber and fluidizing air before entering in the fluidized bed combus- tion chamber by means of a double independent circuit, avoiding direct contact between air and sand.
• Control of the weight of the sand inside of the combus- tion chamber by means of weighing cells.
• Complete combustion of all possible polluting substances (no need for any post-combustion).
• Proportional valve for combustion system to have a precise and efficient control of the elements of the combustion.
意大利米兰的Sogemi工程公司，从上世纪90年代 开始开发热法再生设备Simplex。系统的设计经过大 量的研究与实验，以设备的可靠性为目标且兼具高性 能、低操作成本，并能解决铸造厂化学粘结砂排放的 问题。
使用热法再生，铸造厂将消除废砂排放和购买新砂 的成本。热法再生后的砂的颗粒尺寸更好且不含任何 金属颗粒。根据砂中所含树脂的量，燃烧室内的温度 将介于1,292-1,472 F（700-800℃），以避免污染物 的排放，并达到烧损率的要求。 Sogemi设备特点：
• 沸腾床燃烧室。 • 经过燃烧室的焙烧砂和流态热空气进入沸腾床燃烧 室之前，热交换装置进行能量回收，用两套独立的 循环装置避免了焙烧砂与空气的直接接触。
• 砂量的控制由燃烧室内的称量单元完成。 • 所有污染物完全燃烧（无需再次燃烧）。 • 燃烧系统的比例阀对各种燃烧物精确和有效的控 制。
• 可对各种类型化学粘结 砂再生，包括碱性，聚氨 酯，呋喃，壳型，冷芯 盒，热芯盒。
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION June 2014
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