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光洁
SPI
An SPI A-1 Diamond Finish is a specialty of Bales Mold Service. We use it to produce the finest finish on molds, producing highly visible or lens quality parts. The SPI A-2 is the most widely used diamond finish, providing good release and good visual parts. An SPI A-3 is a fine choice for release where a high gloss appearance is not required. All diamond finishes work well with chrome and also offers:Paper Finishes, SPI B-1 to B-3 – Next to diamond polishing, paper finishes are the second most refined finishes available. Paper finishes produce a slightly reflective or glossy shine and very good release. They are often recommended for products that do not require a big decorative or visual impact.  Stone Finishes, SPI C-1 to C-3 – The most economical finish, stone finishes are also the first step in the process of creating both the paper and diamond finishes. Stone finishes provide good release but very little gloss to the plastic part. This is a good choice for strictly functional molded parts where aesthetics are of no importance. Blast Finishes, SPI D-1 to D-3 – When done properly, blasted finishes can produce some of the most interesting stipples and textures on mold surfaces. From a fine satin texture with varied degrees of gloss to a flat, no-gloss coarse stipple, Bales has the blast media to produce the proper finish for you. Blast finishes are also an excellent way to camouflage weld repairs and slight imperfections
NOMENCLATURESPI Finish A-1 -- Grade #3, 6000 Grit Diamond BuffSPI Finish A-2 -- Grade #6, 3000 Grit Diamond BuffSPI Finish A-3 -- Grade #15, 1200 Grit Diamond Buff SPI Finish B-1 -- 600 Grit PaperSPI Finish B-2 -- 400 Grit PaperSPI Finish B-3 -- 320 Grit PaperSPI Finish C-1 -- 600 Grit StoneSPI Finish C-2 -- 400 Grit StoneSPI Finish C-3 -- 320 Grit StoneSPI Finish D-1 -- 600 Stone Prior to Dry Blast Glass Bead #11SPI Finish D-2 -- 400 Stone Prior to Dry Blast #240 OxideSPI Finish D-3 -- 320 Stone Prior to Dry Blast #24 Oxide                    SPE -- The Society of Plastic EngineersSPI -- The Society of the Plastic Industry
表面粗糙度国际标准加工方法标准等级代号 表面粗糙度 加工工具(方法) 加工材料及硬度要求 光度描述 粗研磨砂粒粒度 精研磨砂粒粒度 钻石膏抛光 SPI(A1) Ra0.005       S136 54HRC 光洁度非常高,镜面效果 SPI(A2) Ra0.01       DF-2 58HRC 光洁度较低,没有砂纸纹 SPI(A3) Ra0.02       S136 300HB 光洁度更低一级,但没有砂纸纹 SPI(B1) Ra0.05           没有光亮度,有轻微3000#砂纸纹 SPI(B2) Ra0.1           没有光亮度,有轻微2000#砂纸纹 SPI(B3) Ra0.2         没有光亮度,有轻微1000#砂纸纹不辨加工痕迹的方向Ra0.4 精加工:精车\精刨\精铣\磨\铰\刮  微辨加工痕迹的方向 Ra0.8 精加工:精车\精刨\精铣\磨\铰\刮     可辨加工痕迹的方向 Ra1.6         Ra3.2         Ra6.3         Ra12.5         Ra25         Ra50 
SPI Finishes
Type of Finish
Finish #
Guide
High Polish
A1
#3 Diamond Buff

A2
#6 Diamond Buff

A3
#15 Diamond Buff
Paper
B1
600 Grit Paper

B2
400 Grit Paper

B3
320 Grit Paper
Stone
C1
600 Stone

C2
400 Stone

C3
320 Stone
Dry Blasted
D1
Dry Blast Glass Bead #11

D2
Dry Blast #240 Oxide

D3
Dry Blast #24 Oxide。

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