tent for each inspection. A written procedure with photos is recommended for ensuring accuracy of manual inspections. If a 2% sample represents four sets of flasks, one set should be checked every four months. At minimum, one set should be checked per year regardless of the total quantity of flasks on the molding line.
How Do I Inspect My Flask?
Ideally, the metalcasting facility has a copy of the original as-manufactured final dimensional inspection reports for its flasks (and the pallet cars, as well) to use as a benchmark for inspections. If not, equipment still can be evaluated for serviceability without any starting point data. The goal for collecting data is to determine the amount of wear per cycle, annualized, on the critical surfaces and points of the flasks and hardware. Exclu- sive of material defects in the flasks, this data can be an indication of the longevity of the flasks before repair or replacement is required. Te following procedure is a good starting point.
• Make sure your flasks are permanently numbered (i.e. C-001, D-001) and record all data by flask reference number (Fig. 1).
• Start and maintain a program to measure a sampling of your flask’s critical dimensions.
• Let casting and mold quality dictate what is necessary to record. Flasks are components of a system. Know the points of your flask handling in the molding system that can affect mold quality, such as pins and bushings that can cause mold misalignment. Generically, the following processes can affect the mold and casting quality: pattern engagement, pattern strip-off/disengagement, strike-off, roll-over, drag set-on to pallet car (when applicable), drag positioning for core- setting, sprue drilling (when applicable), mold closing, mold clamping (when applicable), cope flask weight set-on (when applicable) and flask cleaning station.
• Gather only data critical for making a good mold and casting, such as surfaces used in pattern set-on and surfaces used in mold closing. This data will be different for each metal- casting facility.
• Check flask components on a regular basis. Gaging and recording data for pins, bushings, bumpers, hooks and other parts is a critical part of controlling casting scrap attributed to worn flasks. Component
检查。无论造型线上有多少砂箱，每年至少应检查一套 砂箱。
如何检查砂箱？
在理想的情况下，铸造厂应将砂箱制造时的最终三维 检验报告的副本作为检查基准（托盘车也需要）。如果 没有该报告，没有任何初始点数据，仍然可以进行设备 评估。
收集数据的目的是确定每年砂箱和硬件上关键表面与 关键点的磨损量。这些数据不包括砂箱在材料方面的缺 陷，可以在维修或更换之前显示砂箱的寿命。 下列程序是一个很好的起点
• 确保砂箱永久编号(i.e. C-001, D-001)，根据砂箱编 号记录所有数据
• 开始并保持一个项目来测量砂箱的关键尺寸 • 根据铸件和砂型质量来决定什么记录是必要的。砂箱 是系统的组成部分。要知道在造型中如何对待砂箱， 这将影响砂型质量，如销和衬套的问题可能会导致砂 型错位。总体来说，下面的过程可以影响砂型和铸件 的质量：模样放置、起模、刮平、翻转、放到输送小 车上（需要时）、下箱固定以便下芯、钻出浇口（需 要时）、合箱、锁箱（需要时）、设置砂箱压铁（需 要时）和砂箱清理。
• 仅收集对砂型和铸件质量的关键数据，如模样表面 和砂型合模时的表面。这些数据对每个铸造厂都不 相同。
• 定期检查砂箱组件。销、 衬套、减震器、吊钩和其 它零件的测量和记录是控 制因砂箱磨损引起的缺陷 的重要方法。组件的寿命 直接关系到砂箱的寿命和 可用性。磨损的砂箱比尺 寸精度较高的砂箱更消耗 硬件（如销和衬套）。
Inspectors use a self-centering pin and a center distance gage to ensure accurate measurements.
检查员要使用自定心针和中 心距离测量计，以确保准确 的测量。
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FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION Spring 2012
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