Extrusion Asia Edition 1-2018

Guill Tool & Extrusion Co., Inc. 10 Pike Street West Warwick, RI 02893 USA www.guill.com fied minimum tolerance and is economically produced. Dirty, neglected and improperly adjusted tools contribute to excessive compound applications, which in turn complicate maintenance of minimum thickness tolerance. Excess material results in un- necessary costs and these directly affect the profitability of your company and the relationships with your customers. Summary Working from your dedicated tool cart, follow the manufacturer’s instructions for reassembly. Give each component a final wipe down with a clean rag before installing. Even the smallest amount of grit, dirt and residual material must always be removed. Use mechanical or manual as- sistance for heavy and awkward components to avoid unnecessary mishaps. Reapply anti-seize com- pound to all fasteners if required. Tighten fasteners to manufac- turer’s recommended specifica- tions as well as in the recommen- ded sequence. This fastening sequence should be specified in the manual and is generally in a star pattern. Tighten gradually until the proper torque is achieved to prevent distortion of the tool- ing. One of a die manufacturer’s main goals is to form a concentric cone as quickly and accurately as possible in the primary section of the die – when the extrudate first emerges from the die's distribu- tion capillaries. A properly de- signed and manufactured die has even distribution close to the extrudate entrance point, but this effort is negated once the die is adjusted, shifting the extrudate off to one side. An eccentric cone is formed in the primary area, and a concentric cone exists at only one point in the process, rather than a smooth, continuous flow path with decreasing volume. A properly manufactured and aligned extruded head, along with well-maintained tooling should require little or no adjust- ment. Another adverse affect of unnecessary die adjustment is the stress introduced to the extrudate caused by unbalanced flow. The net effect is the final product retains memory of this imbalance and unpredictable die swell occurs. 19 Extrusion Asia Edition 1/2018 ؏২ૅ୏ ङґચ ي ѹ՚ ： 5.1 C39 展位号： 2 J63 CENTERW 范围90mm 设计，运用 管材提供外 垂度的测 的多层管材 据。CENTE 响，可精准 精度测量。 AVE 6000 ，专为外径 - 3200mm 的超大管材 突破性的毫米波技术为 径、壁厚、偏心度和下 量与控制。即使是复杂 ，也可精确测得所有数 RWAVE不受耦合材料影 地对管材壁进行多点高 因而 该系统具有很好 的操作重复 材的品质保 重要技术保 – 操作简单 品参数 – 检测不受 – 测量数据 – 可靠的测 ， 性，为大直径的塑料管 障提供了一个前瞻性的 障。 ，不需要预先设定产 材料及温度的影响 的实时显示及控制 量数据，不需要校正 www e6000