Electric Automation Co., Ltd. Nanjing toward all manufacturers selling dealer special spot surface roughness comparison specimens First, use: After the surface roughness comparison specimens through visual and tactile, to compare the law to check the mechanical parts of a surface roughness Measuring kinds of work. By comparing the measured visually or magnifying glass and metal parts, to determine the level of the surface roughness, to provide guidance for the design of specific processing methods and roughness class intuitive feel and appearance features, but also as a mechanical engineering colleges intuitive aids. Surface roughness comparison specimens for characterizing parameters arithmetical mean deviation of the surface profile Ra value. Surface roughness comparison specimens in full compliance with national standards and national GB6060-2.3.4.5 verification procedures of the technical requirements JJG102. Production varieties, specifications Annex. Second, materials and specifications: 1) machined surface roughness comparison specimens Materials: In addition to the use of external grinding specimens GCr15 material remaining specimens with 45 # quality carbon structural steel. Machined surface roughness comparison specimens specifications: 1 is divided into five kinds of surface roughness comparison specimens eight groups (car cylindrical, planing, end milling, flat milling, grinding, external grinding, milling, boring the hole) 2 surface roughness comparison specimens seven groups (lathe, planer, milling, flat milling, grinding, external grinding, grinding) 3, the surface roughness comparison specimens six groups (lathe, planer, milling, milling flat, flat grinding, external grinding) 4, the surface roughness comparison specimens notebook (lathes, milling, flat milling, grinding, external grinding, grinding) 5, the surface roughness comparison specimens Single specimen type :( lathe, planer specimens, Milling specimens, specimens flat milling, grinding specimens, specimens outside the mill, grinding specimens, boring kind pieces, hand-grind) 6, the surface roughness comparison specimens Dual car cylindrical type :( cylindrical grinding, boring mill within the bore hole) 2) Other surface roughness comparison specimens nickel alloy material, the use of precision electroforming replication technology, advanced technology, stable quality, most complete varieties and specifications, the product has high hardness, wear good, never rust and other characteristics, especially suitable for the production site. 1, sandblasting the surface roughness comparison specimens 2, throwing peened surface roughness comparison specimens 3, polishing the surface roughness comparison specimens 4, steel sand casting surface roughness comparison specimens 5, EDM wire cutting Surface roughness comparison specimens 6, EDM surface roughness comparison specimens Third, use and maintenance Caution: Surface roughness comparison specimens should be used as much as possible and in parts was seized in the same conditions (including surface color, lighting conditions, etc. ) shall not be touched with bare hands comparison specimens, strict anti-rust treatment, to prevent corrosion, and avoid touching scratches. Welcome to come to order! Direct production of the national standard surface roughness comparison specimens (standard Ra value, roughness) Manufacturer Price: ex-factory price in line with the national standard notation standard value of surface roughness Ra contrast specimens specification list: meet GB: GB6060.5-88 Products Name roughness Ra roughness value processing method specifications um blocks meet the national standard of surface roughness comparison specimens modular 0.8,1.6,3.2,6.3 32 GB6060.2-85 car cylindrical inner bore 0.8,1.6,3.2,6.3 planing 0.8,1.6,3.2,6.3 flat end milling milling 0.8,1.6,3.2,6.3 0.8,1.6,3.2,6.3 0.1,0.2,0.4,0.8 cylindrical grinding mill grinding 0.1,0.05,0.025 0.1,0.2,0.4,0.8 0.012 Surface roughness comparison specimens car park Dual type 0.8,1.6,3.2,6.3 8 GB6060.2-85 mill outside the park 0.1,0.2,0.4,0.8 planing surface roughness comparison specimens Single type 0.8,1.6 , 3.2,6.3 4 GB6060.2-85 0.1,0.2,0.4,0.8 GB6060.2-85 flat grinding surface roughness comparison specimens flat milled Dual type 0.8,1.6,3.2,6.3 8 GB6060.2-85 end milling 0.8,1.6,3.2,6.3 surface roughness comparison specimens boring bore Dual type 0.8,1.6,3.2,6.3 8 GB6060.2-85 mill 0.1,0.2,0.4,0.8 bore surface roughness comparison specimens hand research Single-type surface roughness comparison specimens 0.1,0.05,0.025,0.012 four flat surface grinding 0.1,0.2,0.4,0.8 four single group type roughness comparison specimens WEDM single group type 0.63,1.25,2.5,5.0 , 10 5 GB6060.3-86 surface roughness comparison specimens spark single group type 0.4,0.8,1.6,3.2,6.3,12.5 6 GB6060.3-86 surface roughness comparison specimens polished single-group style 0.8,0.4, 0.2,0.1,0.05,0.025,0.012 7 GB6060.4-88 Roughness comparison specimens Cast Iron Sand Single type 3.2,6.3,12.5,25,50,100,800,1000 8 GB6060.1-85 surface roughness Shot of the comparison specimens 0.2,0.4,0.8,1.6,3.2,6.3,12.5,25,50,100 10 GB6060.5-88 surface roughness comparison specimens blasting 0.8,1.6,3.2,6.3,12.5, 256