【英文标准名称】:TestMethodforDeterminationofParticleSizeDistributionofAluminaorQuartzUsingCentrifugalSedimentation
【原文标准名称】:用离心沉积法测定矾土或石英粒度分布的方法
【标准号】:ASTMC678-1975
【标准状态】:作废
【国别】:
【发布日期】:1975
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:陶瓷;术语;矾土;石英砂;粒度测量;石英;玻璃;定义
【英文主题词】:
【摘要】:
【中国标准分类号】:Q35
【国际标准分类号】:
【页数】:
【正文语种】:


Product Code:SAE J449
Title:Surface Texture Control
Issuing Committee:Surface Enhancement Committee
Scope:SAE J448, Surface Texture, has been set up for precision reference specimens using a controlled surface profile to obtain reproducible roughness values. These specimens are for instrument calibration. Appropriate symbols for roughness, waviness, and lay have also been standardized (ASA B46.1-1962 and SAE J448).For production control, especially from one geographical location to another, means are required to facilitate the inspection of surface characteristics called for by specifications which include not only roughness but profile waviness and lay. In order to integrate the requirements of the designer with the actual production of surfaces, a second grade of control standards must be adopted which will be functional in nature for the specific product being manufactured. These control standards may be Calibrated Pilot Specimens (actual parts with satisfactory texture) or Roughness Comparison Specimens (ASA B46.1-1962). This SAE Recommended Practice describes the usage of these control standards.ese control standards.