Pinhole treatment
Treatment of holes (size 0.02 mm and over) in hard alloy and ceramics.
Electric-spark boring of holes in hard metal:
Hole size: 0.025 mm and over;
Accuracy: up to 0.005 mm;
Ration of boring length to diameter: up to 10;
Finish: Ra = 0.40 mkm;
Polishing of holes with diamond paste with finish Ra = 0.100 mkm.
Boring and treatment of pinholes in hard and ultra-hard material of the following types:
1. Hard alloy (hardened tool and alloyed steel);
2. Sapphire;
3. Ceramics etc.
Hole size: 0.015 mm and over;
Positional accuracy: 0.005 mm;
Internal surface finish of the end holes: Ra = 0.25 mkm.
Internal surface treatment of the holes of minor diameters: 0.4 – 20 mm in length, situated on
parts fulcrum pin with external diameter equal from 1.5 up to 10 mm, pipe-type, to surface
smoothness Ra = 0.1 mkm.
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