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Fig. 2: Different individually switchable spraying circuits al- low targeted spraying on critical die areas – without unnecessary separating agent consumption.


图2:不同的单独可切换喷涂线 路能够在关键模具区域进行针 对性的喷涂——没有不必要的 脱模剂消耗。


Fig.3: Shown is the Wollin Spraying tool with dosing nozzle for EcoSpray.


Te advantages of micro spraying include:


• Shorter spraying times. • Reduction in separating agent consumption. • Less air consumption. • No waste water. • Free from biocides. • Low noise emission. • Reduction in thermal shock. • Reduction of energy costs. • Longer die lifetimes. In order to use the advantages of micro spraying to the


full, good die cooling is required. Due to the reduction of the temperature shock that oc- curs when strong cooling with water takes place, thermal cracks can be reduced and the die lifetime considerably lengthened. Various separating agents that can be used up to a die temperature of 400C are already available on the market. Tese are available for aluminium as well as magne- sium casting. Wollin’s latest new development in the area of spraying


technology is the patented dosing nozzle DD1. Tis makes it possible to constantly spray a quantity of separating agent after it has been adjusted on the nozzle. Quantity adjustment is via a dosing spindle in the range 0 to 0.119 ml/per impulse. Te very fine dosage possibility means that the dosing nozzle DD1 is especially suitable for spraying of waterfree concentrates, i.e. in those areas where active agents should only be applied in very small quantities. Te dosing nozzle can be mounted on all Wollin PS16


spray strips. Te flexible configuration of the spraying tool means that it is possible to design one circuit for water (e.g. for cooling the die) and another as a separating agent circuit for oil.


Tis technology has achieved a milestone for a higher productivity at a lot of customer applications, particularly at


the production of structural parts.  Visit www.wollin.de for more information.


• 耗气量低。 • 没有废水排放。 • 不含杀菌剂。 • 减小噪声。 • 热冲击减少。 • 能耗降低。 • 模具寿命更长。


为了充分利用微喷的优势,需要模具进行良好的冷 却。


由于比用水强烈冷却时出现的温度冲击少,热裂纹也 将减少,并且模具的使用寿命将相应地延长。市场上已 经出现可用于400℃模具温度的各种脱模剂。这些可用 于铝和镁铸件。 Wollin在喷涂技术领域的最新进展是取得专利的定量 喷嘴DD1。将喷嘴进行调节后,能够持续喷涂一定量的 脱模剂。


定量喷涂是通过定量轴在0 至 0.119 ml/脉冲范围内 调节实现的。非常精确的定量意味着定量喷嘴DD1尤其 适合于喷涂无水浓缩液,也就是那些只能非常小量地喷 涂活性剂的区域。


定量喷嘴可安装在所有Wollin PS16喷射板上。喷涂 工具的灵活配置意味着可设计一条水路(例如用于冷却 模具),以及一条用于脱模剂的油路。


该技术已经在许多客户应用中获得了更高的生产力, 取得了里程碑式的发展,尤其在结构铸件生产方面。—


Günter Engelhorn, Wollin  更多信息请访问:www.wollin.de


图3:图中所示的是用于EcoSpray 带有定量喷嘴的Wollin喷涂工具。


December 2015 FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 81


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