ASTM D4289-13(2014)e1
润滑脂和润滑液弹性体相容性的标准试验方法

Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids

被代替

标准号

ASTM D4289-13(2014)e1

发布

2013年

发布单位

美国材料与试验协会

替代标准

ASTM D4289-19

当前最新

ASTM D4289-21

 

 

引用标准

ASTM D1193 ASTM D217 ASTM D2240 ASTM D297 ASTM D3182 ASTM D3183 ASTM D412 ASTM D4175 ASTM D471 ASTM D4950

适用范围

5.1 Measurement of the changes in the volume and hardness of an elastomer that occur from immersion in a lubricating grease or fluid provides a means for evaluating relative compatibility. Much of this test method was derived from procedures described in Test Method D471 and Federal Test Method8201;791C/3603.5. In contrast to these two test methods, which emphasize the evaluation of rubber and rubber-like compounds, Test Method D4289 was developed specifically to evaluate lubricating greases and fluids, especially those used in automotive applications, although the test method can be applied to lubricants used in industrial applications as well. Excepting the Shore Durometer A, this test method requires no specialized, rubber-testing equipment. Virtually all other equipment and supplies specified in the procedure are stock items in lubricants laboratories.

5.2 The volume and hardness-change values determined by this test method do not duplicate similar changes that occur in elastomeric seals under actual service conditions. However, they can be correlated in many instances. In one such instance, the volume-change values determined by the antecedent of this test method correlated (r ²8201;=8201;0.99) with those that occurred during a vehicle test.7 Because of wide variations in service conditions and differences in grease and elastomer formulations, correlations between the results obtained with this test method and particular applications should be determined on an individual basis.

5.3 When the optional Reference Elastomers AMS 3217/2C (acrylonitrile-butadiene, NBR-L) and AMS 3217/3B (chloroprene, CR) are used to evaluate compatibility, the results can be used to judge a service characteristic of lubricants. In this respect, this test method is useful for lubricant specifications (for example, Specification D4950). Similarly, this test method can be used in specifications for lubricating fluids as well.

5.4 With specifications requiring elastomers other than Reference Elastomers AMS 3217/2C or AMS 3217/3B, coupons cut from standard sheets (Practice D3182) should be used. When the preparation of such coupons is not feasible, or the lubricant specification requires the use of rubber products that do not have a suitable size or configuration for use in preparing coupons for testing (Practice D3183), this test method can be used as a guide for evaluating compatibility.

Note 5: Inasmuch as the precision values apply only to the elastomers specified in Annex A1 of Test Method D4289, when a lubricant specification requires some other elastomer, the user and supplier of the lubricant should agree to the values of acceptable precision. Such values may or may not be the same as those of Test Method D4289. It is recommended that the agreed upon precision values be stated in the user's lubricant specification.

5.5 The results of......

关于润滑剂摩擦磨损试验机的极压性能测定

润滑液摩擦磨损试验机的极压性能测定常见的有2种方法，一种是四球机法，一种是梯姆肯法。试验方法不同我们也分别称之为不同的试验机，即四球摩擦试验机、梯姆肯试验机。两者分别满足标准GB/T 11144-2007和SH/T0202-92的相关要求，下面我们就来了解一下。...