Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D7528-17
• Năm ban hành / Publication date: 2017
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Test Method for Bench Oxidation of Engine Oils by ROBO Apparatus
• Chỉ số phân loại Quốc tế (ICS) / By field: 75.100 - Chất bôi trơn, dầu công nghiệp và các sản phẩm liên quan
• Số trang / Page: 21
• Phạm vi áp dụng / Scope of standard: 1.1 This test method describes a bench procedure to simulate the oil aging encountered in Test Method D7320, the Sequence IIIG engine test method. These aged oils are then tested for kinematic viscosity and for low-temperature pumpability properties as described in the Sequence IIIGA engine test, Appendix X1 of Test Method D7320. 1.2 Units-The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.2.1 Exceptions-There are no SI equivalents for some apparatus in Section 6, and there are some figures where inch units are to be regarded as standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in Sections 7 and 8. 1.4 This test method is arranged as follows: Section Scope 1 Reference Documents 2 Terminology 3 Summary of Test Method 4 Significance and Use 5 Apparatus 6 Reagents and Materials 7 Hazards 8 Reference Oil Testing and Test Stand Calibration 9 Procedure 10 Cleaning 11 Calculations and Determination of Test Results 12 Report 13 Precision and Bias 14 Keywords 15 Annexes Reaction Vessel Annex A1 Reaction Vessel Head Annex A2 Reaction Vessel-to-Head Seal Annex A3 Agitator Turbine Blade Annex A4 Agitator Packing Gland Annex A5 Nitrogen Dioxide Graduated Tube Annex A6 Vacuum System Plumbing Annex A7 Vacuum Trap Condensers Annex A8 Setting the Vacuum Control Valve Annex A9 Appendixes Sample Preparation and Addition Appendix X1 Charging the Liquid Nitrogen Dioxide Appendix X2 Nitrogen Dioxide Precision Needle Valve Appendix X3 Example of an Assembled ROBO Apparatus Appendix X4 Information Package to Aid Setting Up a New Robo Apparatus Appendix X5 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.