Shore A，M，D硬度计与IRHD的差别

赵兄

These are four different methods of determine rubber hardness. All four evaluate hardness as the resistance to penetration of an indentor, but that's where the similarities stop.
, a) E4 \( y- A" v8 `这里有4种测量橡胶硬度的方法，这4种方法都是通过对压入橡胶时的抵抗行为形变来测量硬度的，但这也是4种硬度测量方法仅有的相似之处。
' `& l  W! y; C5 E  t, ?9 SShore A is the most common method of evaluating rubber hardness in North America. Even though it's a manual method, it has been shown to be very accurate and repeatable over the entire spectrum of materials and is not sensitive to the size or shape of the sample being tested, assuming proper measuring technique is used.
Shore A在北美地区是一种常用的评定橡胶硬度的方法。虽然是通过人工测定的，但只要采用适当的测量技术，这种方法对所有原料都有非常好精确度和重现性，并且这种方法受被测样的形状和大小的影响很小。
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4 ~% Y. p% x% n4 O7 Y' V6 @Shore D is very similar to Shore A, but it's intended for use with plastics. A Shore D measurement of 50 is approximately equal to a Shore A measurement of 90. Shore D is generally not valid for rubber O-rings.
Shore D和Shore A很类似，只是测定范围包含了塑料。50度的Shore D硬度可以近似的认为和90度的Shore A硬度相当。但通常Shore D方法对橡胶O型圈并不适用。

Shore M as designed specifically to measure finished O-rings. Because it removes the influence of operator technique, the results are more repeatable. However, Shore M results vary with the thickness of the O-ring being tested. A small cross-section O-ring could register as much as 20 points lower than a larger cross-section O-ring of the exact same material. As a result, there is no correlation between Shore A and Shore M measurements. Shore A pass - fail limits are not valid for Shore M results, and vice-versa.
Shore M是专门用来测定O型圈的。由于其排除了测量设备的影响，其结果有更好的重现性。然而Shore M的结果会随被测O型圈的厚度的变化而变化。对于同样材质，一个小截面的O型圈比大截面的可能低接近20点的Shore M硬度。因此Shore A和Shore M之间没有任何关系。Shore A通过与否不能用来断定Shore M，反之亦然。

. F, f1 x8 B2 [IRHD is the standard European test for rubber hardness. The equipment is automated (and quite expensive,) but the results are repeatable and generally consistent with Shore A results within about five hardness points.
# {) s8 R) ~: k3 aIRHD是欧洲对橡胶硬度的标准测试。其设备是自动的（也相当昂贵），其结果是可重现的，并在大约五个硬度点内和Shore A的结果有很好的一致性。
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Micro-IRHD (IRHDM) was designed to test rubber hardness of very small samples. As with Shore M, though, the results vary considerably from one sample thickness to another. IRHDM results to not correlate with other test methods.
: N" ]+ D9 ^. j/ z! l4 q1 wMicro-IRHD (IRHDM)是用来测量非常小的橡胶件的硬度。尽管和Shore M类似，其结果会随样品厚度变化，但IRHDM的结果和其他测试方法没有可比性。
Shore M, IRHD, and IRHDM are all useful in measuring the consistency of a specific rubber part from batch to batch. However, it cannot be stressed enough that the Shore A hardness limits for a Parker compound CANNOT be used with these test methods to determine if a seal has been properly manufactured.
Shore M, IRHD, and IRHDM 在测量各批次间橡胶特殊部位硬度的时候是很有效的，但是这并不是只有在以上几种方法不能判定胶料硬度的时候才可以用ShoreA来测量。

doublewing

谢谢分享 谢谢楼主

赵兄

后面一段的翻译有些错误，更正下哦
应该是parker compound 不能用另外三种测试方法来测试，但是用Shore A型来测试应力又达不到标准，所以不能以此来判断胶料性能。

澄心阁

学习了，谢谢楼主。