product news/產品新聞
ing Systems features a modular plunger tip with a replaceable split ring (AMP-R) using an ultra-high strength and high thermal conductivity BeCu alloy with excellent thermal and dimensional stability. In addition, the AMP plunger tip can extract heat faster and reduce casting cycle time. The modular design of the AMP greatly reduces the cost of the plunger tip. A tempered split ring rests freely in a groove, machined near the front of the AMP plunger tip. The split ring is the consum- able. The specially designed stainless steel holder with coolant channels produce a high velocity flow with an additional turbulence of water passing through the inner face of the holder. This achieves maximum heat transfer and cooling. Table 1 compares the Castool AMP-R tip to a
steel tip. The AMP-R tip has a lower surface tem- perature and a lower thermal expansion than the steel tip. Less thermal expansion means less thermal stress induced during casting. The thermal stress of the AMP tip is about a third the steel tip. Castool’s AMP tip can extract heat 65% faster than a conventional
steel tip, reducing overall casting cycle time. ■ Visit
www.castool.com for more information.
Tensile Strength(Mpa) Steel Tip Castool AMP-R Tip
1275 960
Thermal Conductivity (W/m°C) 25 150 Table 1. The Castool AMP-R compared to a steel tip
寸稳定性。Castool模具公司的模块化冲头的特点 是，可替换的活塞环（AMP-R）使用了超高强度和 高导热性的铜铍合金，具有优越的热稳定性和尺寸 稳定性。此外，AMP冲头可以更快地释放热量，缩 短生产周期。
AMP冲头模块化的设计大大降低了冲头的生产成 本。经回火处理的活塞环可方便的安放在AMP冲头 前部加工的凹槽内。活塞环是耗材，特别设计有冷却 剂通道的不锈钢支撑座会产生额外的高速水流，水流 通过支撑座的内侧。得到最大的换热和冷却效果。 表1：Castool AMP-R冲头与钢冲头的对比 Castool AMP-R冲头的导热性能是钢冲头的6 倍。AMP-R冲头的表面温度、热膨胀系数比钢冲 头更低。热膨胀越小说明压铸过程中产生的热应力 越小。AMP冲头的热应力大约为钢冲头的三分之 一。Castool公司的AMP冲头换热比传统钢冲头快
65%，缩短整个压铸周期。 ■ 了解更多信息，请访问
www.castool.com
Tip Surface Temperature
349.9C 115.4C
Thermal Expansion (mm)
0.3632 0.1403
表1：Castool AMP-R冲头与钢冲头的比较
Supplier Provides Risk Mitigation Strategy for Investment Casting Te metalcasting industry, by its nature, works in an
供应商为熔模铸造业提供抗风险策略
environment with a multitude of risk scenarios to man- age. Apart from the obvious concerns of safety, crucial to a foundry’s business model is the maintenance of productivity, and anything that unfavorably affects productivity is a cost. Te key to increasing profitability is to make product faster and/or reduce scrap rates. For both, there is a reliance on the supplier base to be able to provide the materials technol- ogy to achieve these goals and drive profitability. However, significant risks are attached to making changes to a process, particularly the trialling of new materials, due to the ef- fect on production capacity, time spent and potential for increased scrap rates during initial roll-out. Risk relating to trialling new consumables can be charac-
terized as strategic: voluntarily acceptable in order to generate superior returns. Tis is not undesirable, as a strategy that is expected to yield higher returns will generally require a company to take on a significant risk. Te Chartered Institute of Purchase and Supply recommends the use of suppliers as a resource in which to balance the mitigation of risks. Trough the creation of partnerships, which are able to create mutual
铸造行业的性质决定了其工作环境面临很多危险因 素。除保证安全生产外，铸造厂运营的关键是保证生产 率，而对生产率产生不利影响的因素是成本。提高生产 速度、降低不良品率是提高利润率的关键。为此，需要 供应商为铸造厂提供材料处理技术，以最终实现这些目 标并提高利润率。然而，生产工艺的变革创新也伴随着 很大的风险。因为，在新技术应用初期，新材料的试用 可能会影响产量、增加时间成本，并且存在潜在的更高 次品率的可能性。
与新耗材测试有关的风险是策略性的：即为了获得 更高的回报，企业自愿承担风险。作为一项发展战略， 企业为了更高的回报需要承担更大的风险，这是可以接 受的。采购与供应特许研究院建议把供应商作为平衡风 险的有利资源。供应商和客户通过合作，创造共同的战
December 2014
FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 75 Heat Extraction (W)
11203 18720
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