IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Emery Cloth: Graded Grit Between a Make Coat and a Size Coat
Emery cloth is a coated abrasive: grains of emery, a natural abrasive used for polishing metal, glued to one face of a cloth backing. Cloth is chosen over paper where durability matters. The grit is graded to one size, glued down with a make coat, and locked in with a second size coat. Hide glue is the traditional adhesive; it does not stand the heat of machine sanding and is not waterproof, so resin is used where that matters. Closed-coat cloth has 90–95% of its face covered with grain, open-coat 50–70%, which clogs less on soft materials.
Àárín
Factory process
Ìlànà
1
1
Crush and grade the grit
Crush and grade the grit
Crush the emery, then sort it to one size: pass coarse grit through successively finer sieves, separate medium grit by air classification, and the finest by water classification, letting particles settle in a tank by how fast they sink.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àpáta emery1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìfọ́ àpáta
Àkójọ ajọ̀ (ihò onípele)
Ẹ̀rọ ìpínsọ́tọ̀ afẹ́fẹ́
Àpótí ìjókòó2
2
Make coat
Make coat
Run the long ribbon of cloth backing through the coating line and coat one face with adhesive, the make coat that will bind the grit to the cloth.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Aṣọ Òwú1 as required
Ìlẹ̀mọ́ awọ ẹranko1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ìlà ìbora ohun ìhá3
3
Coat with grit
Coat with grit
Drop the graded grit on to the wet make coat (gravity coating), or pass backing and grit through an electric field so the charged grit is drawn on to the backing (electrostatic coating), which holds it more strongly. Cover 90–95% of the surface for closed coat or 50–70% for open coat.
Àwọn irinṣẹ́ tí a nílò:
Ìlà ìbora ohun ìhá4
4
Size coat
Size coat
Apply a second layer of adhesive, the size coat, over the grit to fix it in place.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìlẹ̀mọ́ awọ ẹranko1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ìlà ìbora ohun ìháÀwọn ohun-èlò
3- 1 as requiredÀyè
- 1 as requiredÀyè
- 1 as requiredÀyè
Àwọn irinṣẹ́ tó nílò
5- Àyè
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