ASTM D4340 在排热条件下发动机冷却剂对铸造铝合金腐蚀性的测试方法

ASTM D4340-2010发行信息

标准号ASTM D4340-2010

中文名 在排热条件下发动机冷却剂对铸造铝合金腐蚀性的标准试验方法

英文名Standard Test Method for Corrosion of Cast Aluminum Alloys in Engine Coolants Under Heat-Rejecting Conditions

发布日期2010

实施日期

废止日期无

中国标准分类号H25

国际标准分类号77.120.10 (Aluminium and aluminium alloys)

发布单位US-ASTM

ASTM D4340-2010适用范围

It is essential that engine coolants prevent heat-transfer corrosion of aluminum cylinder heads during engine operation. Any corrosion products formed may deposit on interior radiator surfaces, reducing heat-transfer efficiency of the radiator. Overheating and boil-over of the cooling system may then occur.

This test method provides a means for selectively screening unused engine coolants and will readily distinguish those coolants that are unsuitable for use with aluminum cylinder head engines. However, satisfactory performance of a coolant in this test method does not ensure adequate long-term service performance. Additional, more comprehensive evaluations with simulated service, dynamometer, and vehicle tests should be used to establish the long-term effectiveness of the coolant.

1.1 This test method covers a laboratory screening procedure for evaluating the effectiveness of engine coolants in combating corrosion of aluminum casting alloys under heat-transfer conditions that may be present in aluminum cylinder head engines.

1.2 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 precautionary statements are given in Sections 11 and 12.

在发动机运行期间，发动机冷却液必须防止铝气缸盖的传热腐蚀。形成的任何腐蚀产物都可能沉积在散热器内部表面，从而降低散热器的传热效率。冷却系统可能出现过热和沸腾。


本试验方法提供了一种有选择地筛选未使用的发动机冷却液的方法，并将很容易区分那些不适用于铝缸盖发动机的冷却液。然而，本试验方法中冷却剂的令人满意的性能不能确保足够的长期使用性能。此外，应使用模拟服务、测功机和车辆试验进行更全面的评估，以确定冷却剂的长期有效性。


1.1本试验方法包括一个实验室筛选程序，用于评估发动机冷却液在铝缸盖发动机可能存在的传热条件下防止铝铸造合金腐蚀的有效性。


1.2本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全和健康实践，并确定监管限制的适用性。第11节和第12节给出了具体的预防说明。