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Teknik "bias-cut" adalah teknik yang digunakan oleh penjahit dan pembuat pakaian untuk memotong kain. Peregangan lebih besar pada arah diagonal kain (bias) membantu menonjolkan garis dan lekuk tubuh serta memberikan drapery yang lembut. "Bias" dari sehelai kain tenun berada pada sudut 45 derajat terhadap benang warp dan weft-nya. Setiap potongan kain tenun memiliki dua bias, saling tegak lurus. Kain yang bukan tenun, seperti felt, tidak memiliki bias.
Pada aplikasi industri, Koyo-Sha Bias cut dirancang dengan menggunakan kain buff berkualitas tinggi berketebalan 12~16mm. 16 lapisan kain dikunci dengan cincin di bagian tengah agar terbentuk banyak lipatan kain bias-cut. Semakin banyak lipatan, semakin keras buff tersebut. Koyo-Sha Bias Cloth Buff dioptimalkan untuk polesan halus pada berbagai permukaan. Namun, jika permukaan benda kerja berbentuk tidak teratur, bergerigi, dan perlu dikerjakan dengan pemotongan yang moderat, Koyo-Sha Wide Finger sisal buff akan memberikan performa yang lebih baik.
Koyo-Sha Bias Cloth Buff Disc terbagi menjadi 5 tingkatan, yaitu M-0, 2, 4, 6, 8 berdasarkan kelembutannya. Sebagai panduan dalam proses poles, M-4~8 digunakan untuk pemotongan dan pemotongan bersama pewarnaan, sedangkan M-0~2 untuk pewarnaan. Koyo-Sha Bias Cloth Buff, dengan banyak karakteristik yang tercantum di bawah ini, cocok untuk berbagai macam penghalusan baik dengan tangan maupun mesin poles otomatis mulai dari pemotongan hingga pewarnaan.
Fitur Koyo-Sha Bias Cloth Buff Disc:
Koyo-Sha Bias Cloth Buff Disc Types:
Wide Finger Sisal Buff is the buff with sisal cloth inserted in cotton cloths, then molded in loose pleats, fixed with a clinch ring in center infoldings and machine-sewn with moderate intervals.
Wide Finger Sisal Buff is suitable for cutting / cut & coloring of steel and stainless steel due to uniformity and moderate hardness when contacting with workpiece.
3 types according to stitching method. All buffs are treated.
A-Type : Standard (Sewing on spiral)
B-Type : 1 stitch (1cm from clinch ring)
C-Type : 2 stitches (1cm from clinch ring and middle part between periphery and clinch ring)
*Flanges on Koyo-Sha Bias Cloth Buff are all sold separately.
Koyo-Sha Bias Cloth Buff Disc Dimension:
Compatible Flanges for Koyo-Sha Bias Cloth Buff Disc:
Koyo-Sha Bias Cloth Buff Disc Application Guide:
Division | Subdivision | Initial | Applications |
Alumina abrasives | Brown alumina abrasives | A | Abrasives cloth & paper Grinding stone Fire-resisting material & others |
White alumina abrasives | WA | Abrasives cloth & paper Grinding stone Fire-resisting material & others |
|
Ruby fused alumina abrasives |
PA | Abrasives cloth & paper Precision grinding stone |
|
Mono chrystaling fused alumina abrasives |
HA | Abrasives cloth & paper Precision grinding stone |
|
Artificial emery abrasives | AE | Abrasives cloth & paper Buff Blast |
|
Alumina zirconia abrasives | AZ | Abrasives cloth & paper Heavy duty grinding stone |
|
Silicon carbide abrasives | Black silicon carbide abrasives |
C | Abrasives cloth & paper Grinding stone Fire-resisting material Stone & others |
Green silicon carbide abrasives |
GC | Grinding stone Fire-resisting material Stone Catalyst & others |
Koyo-Sha's Common Buffing and Compounds Combination Guide:
The following chart will help in deciding which wheels and compounds to use when polishing dissimilar materials.
This chart is a starting point and experienced polishers may vary the materials used to suit different applications.
Plastics | Silver, gold & thin plates | Nickel & chrome plating | Copper, brass, aluminium, pot metal & soft metals | Steel & iron | Stainless steel | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Buff type | Rough | Initial buff | Final buff | Rough | Initial buff | Final buff | Rough | Initial buff | Final buff | Rough | Initial buff | Final buff | Rough | Initial buff | Final buff | Rough | Initial buff | Final buff |
Sisal | X | X | X | |||||||||||||||
Spiral sewn | X | X | X | X | ||||||||||||||
Loose | X | X | X | |||||||||||||||
Canton flannel | X | X | ||||||||||||||||
String | X | X | X | |||||||||||||||
Compound | ||||||||||||||||||
Black | X | X | X | |||||||||||||||
Brown | X | |||||||||||||||||
White | X | X | X | |||||||||||||||
Blue | X | X | X | X | X | X | ||||||||||||
Green | X | X | ||||||||||||||||
Red | X | X | X |
BLACK = Emery Compound, a coarse abrasive material for removal of scratches, pits, paint, rust etc.
BROWN = Tripoli compound used for general purpose cut and color on most soft metals.
WHITE = Blizzard compound, used for color and final finish of harder metals, has a cutting action.
RED = Jeweller’s Rouge, designed to polish without any cutting action. Safe on thin plates. Use your own wheel.
BLUE = A dryer, almost greaseless wheel - designed to polish without any cutting action. Safe on thin plates. Use your own wheel.
GREEN = Used exclusively for Stainless Steel.
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