pcs柴油润滑性消耗包介绍

HFRR标准试样包含有100个上部试样和100个下部试样。上部试样为一个直径6mm的球体，装入上部试样座内，下部试样为10mm的圆盘，装入下部试样座内。符合标准 ISO 12156-1、ASTM D6079、ASTM D7688和IP450《柴油标准测试法》，SH/T 0765-2005柴油润滑性评定法(高频往复试验机法)。每批产品都经过多次检验，并附有合格证。

· This standard specimen pack comprises 100 upper and 100 lower specimens for use in the HFRR and are manufactured to comply with ISO and ASTM standards.

· Upper Specimen (Ball)

· The upper specimen is specified to grade 28 (ANSI B3.12), ANSI E-52100 steel, with a Rockwell hardness “C” scale (HRC) number of 58-66 (ISO 6508), and a surface finish of less than 0.05 µm Ra.

· Lower Specimen (Disc)

· The lower specimen is specified to AISI E-52100 steel machined from annealed rod, with Vickers hardness “HV30” scale number of 190-210 (ISO 6507/1). It is turned, lapped and polished to a surface finish of less than 0.02µm Ra.

HFRR standard specimens are sold as a pack of 100 upper and 100 lower specimens. The upper specimen is a 6mm diameter ball that is loaded into the upper specimen holder and the lower specimen is a 10mm disc that is loaded into the lower specimen holder.