SPI美国标准
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- SPI美国标准Description Roughness Averaging Comments
3# 钻石膏 0-1 抛光达到镜面或光学要求
grade #3 diamond buff for mirror or optical finishes
6# 钻石膏 1-2 需要很长时间与成本才能达到此类抛光级别
grade #6 diamond buff most time consuming and costly finishes to achieve
15# 钻石膏 2-3 对钢料的质量要求很高
grade #15 diamond buff steel grade important to results (D-M-E No.3 or No.5 steel recommended)
600# 砂纸 2-3 消除所有的加工纹
600 grit paper removes all tools and machining marks
400# 砂纸 4-5 提供较好的出模
400 grit paper provides good mold release
320# 砂纸 9-10 在模具上表现为有较暗的反光。
320 grit paper light reflecting finish on molded part,some sheen
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