Fig. 1. After examining your flasks, create an in- spection report and draw- ing and include a photo of the actual flask. Flasks are critical to ultimate casting quality and should be inspected regularly.
图1，检查砂箱之后，撰写 一份检查报告，配上实际 砂箱的照片。砂箱对最终 铸件质量至关重要，需要 经常检查。
What Inspection Pro- gram Should I Use?
Flasks have become
a major capital invest- ment for metalcasting facilities. Flasks often are used in a set rather than individually, so the assembled stack-up dimensional data is ulti- mately the most crucial information about them. However, attention should be paid to each individual flask in the set as well.
Most tight flask molding line manufac- tures today number their flasks and pallet cars for tracking and account- ability. Regardless of the number of flasks on a molding line, the amount of wear on each flask is typically consistent, except in the case of severe molten metal damage.
One method of keep-
ing track of serviceability and dimen- sional characteristics is an annual program of sampling flasks on the molding line. Testing about 2% of the molding flask sets on the line once per year is sufficient sampling for track- ing this data. Inspection of the flasks, preferably by a coordinate measuring machine, can be limited to the dimen- sions that are critical and functional. Manual inspection also is accept- able, if the procedural steps are consis-
应该采用什么检查程 序？
砂箱已成为铸造厂 的主要投资。砂箱往往 是成组使用，而不是单 独使用，所以合箱后的 砂箱的数据是最重要 的。但是，也应注意其 中的每个砂箱。 大部分造型线制造 商给砂箱和输送小车进 行编号，以便于进行跟 踪和计数。无论造型线 上有多少砂箱，每个砂 箱的磨损量通常是一致 的，除非被金属液严重 破坏。
跟踪可维护性和尺 寸精度的方法之一是按 照年度计划对造型线上 的砂箱抽样。每年测试 约2％的砂箱就足够跟
踪这一数据。砂箱的检查最好用三 坐标测量机，检查项目可以限定为 关键尺寸和功能性尺寸。 如果检查步骤能做到一致，采 用人工检查也可以。最好有附照片 的书面程序，以确保人工检查的准 确性。如果2％的样本代表四套砂 箱，那么每四个月应做一套砂箱的
Spring 2012
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