DIY Rolling-mill Pressure Calibration and Depth Chart

DIY Rolling-mill Pressure Calibration and Depth Chart

自制轧机压力标定与压深对照表

type:tutorial · level:intermediate · material:copper · scale:decorative-object · equipment:rolling-mill · equipment:hand-tools · stage:forming · stage:toolmaking

标签：轧机, 压力标定, 铅试压, 压深控制

手动轧机没有压力读数，压深全凭手感。自制标定件：用 3 mm 铅板做"试压片"——铅比铜软得多（布氏硬度约 4 对 35），先空轧出基准辊距，再以 0.1 mm 递减试压铅片，游标卡尺测厚，建立"辊距-压深"对照表贴在轧机立柱上。压印植物纹理取母本纹理高度的 60–70%，超过 80% 鲜叶即碎裂粘辊；每换一种材料先压一片铅复核，辊轴磨损造成的压深漂移可立刻发现。此法让批量压印的深度一致控制在 ±0.05 mm 内。

Manual mills have no load readout, so imprint depth is guesswork. Make a calibration set from 3 mm lead proof pieces—lead (about 4 HB) is far softer than copper (about 35 HB): establish a base gap, roll leads at 0.1 mm decrements, measure with calipers, and post a gap-versus-depth chart on the mill frame. Take plant imprints to 60–70% of texture height; beyond 80% fresh leaves shatter and stick. Roll one lead proof before each new material and roll-wear drift shows at once, holding batch depth within ±0.05 mm.