How to measure Shore hardness with PosiTector SHD?

DefelskoPosiTector SHD Shore Hardness TesterIt is used to test the hardness of non-metallic materials such as soft rubber, hard plastic and super soft gel.thisPosiTector SHDFeatures and easy-to-read digital display, internal memory, and a user-adjustable measurement timer with on-screen countdown.

What is material hardness?

Material hardness is a measure of a material's ability to withstand deformation such as bending, scratching, abrasion or cutting.Measuring strength and durability is a key element in quality assurance and quality control.Typically, a material needs to meet a specific hardness standard, usually determined by testing for Shore hardness.

Indentation Hardness Tester, such asPosiTector SHDShore Hardness Tester andBosideng BHIA Barcol Hardness Tester uses a precisely shaped tip, or indenter, attached to a calibrated spring to measure how far the tip penetrates the material.The larger the indentation, the softer the material.

What is Shore Hardness?

Over 100 years ago, Albert Ferdinand Shor invented the Shore Durometer, which provides different hardness scales for measuring thermoplastic elastomers, vulcanized (thermoset) rubber, elastomers, soft gels and hard plastics, etc. hardness of different materials.Testing Shore hardness is a quick way to determine how a material will behave under impact and abrasion.Shore durometers are also commonly used to determine whether a coating is sufficiently cured.

ASTM D2240 Standard Test Method for Rubber Properties Durometer Hardness, determined twelve different hardness scales: A, B, C, D, DO, E, M, O, OO, OOO, OOO-S and R. Different durometer scales are suitable for materials with different properties.

What is a Shore Hardness Tester?

Accurately measure hardness with Shore, Analog, or Analog Durometers.When the indenter is pressed into the material, under specified conditions, the Shore hardness value is determined by the reciprocal of the distance that the indenter can penetrate.

Two commonly used scales for measuring Shore hardness are Shore A and Shore D. They have slightly different measurement configurations, and each scale has a different indenter shape and a different spring load.

• Type A: According to ASTM D2240, the Shore A indenter is a hardened steel rod with a truncated cone at a 35° angle and is used for testing the hardness of softer materials such as flexible mold rubber and other soft polymers.

*see position Detector SHD A

• Type D: According to ASTM D2240, the Shore D indenter is a hardened steel rod with a 30° conical point used for testing the hardness of hard, high resistance materials such as thick vinyl and rubber.

*See PosiTector SHD

Shore hardness is better measured with hand-held electronic instruments such asPosiTector SHD.An easy-to-read digital display takes the guesswork out of an analog gauge.它有内部内存和免费的桌面软件，有助于简化报告。HiLo报警、统计模式和自动忽略模式也使质量控制比以往任何时候都更容易。

如何测量肖氏硬度？

digital PosiTector SHD邵氏硬度计是一款手持式硬度计，旨在将操作员出错的可能性降至最低。这些说明是为PosiTector SHD编写的，但可与任何手持式（手动）肖氏硬度计一起使用。

步骤1：确定测试位置

肖氏硬度计应用于坚硬、坚硬的表面。如果材料较薄或可能变形，则在试验期间将其放在坚硬的表面上。

测量点的间距至少应为6毫米（0.24英寸）。

第二步：测量

将探头向下用力压在待测材料上，直到压头脚与表面完全平接触并保持稳定。测试计时器将开始倒计时。当计时器达到0时，仪表将发出两声蜂鸣并显示测量值。

如何验证肖氏硬度计的精度

每次轮班前后，用随附试块检查硬度计的精度。将试块放在坚硬平坦的表面上。为了获得准确的肖氏硬度测量值，用位置探测器SHD A或者PosiTector SHD公司每个试块上的读数至少为6毫米和5英寸。

使用digital PosiTector SHD a或PosiTector SHD邵氏硬度计有什么好处？

数字读出

易于阅读的数字显示有助于消除读取模拟刻度的猜测，减少操作员出错的机会。

内存、统计和USB端口

这个PosiTector SHD公司内置存储器，用于记录数据。在测量肖氏硬度时，屏幕统计模式持续显示/更新。测量完成后，可以使用内置USB端口将读数下载到PC或Mac电脑上，从而找到存储的读数和图形。

免费软件解决方案

为了报告和存储肖氏硬度读数，DeFelsko提供了查看和分析测量数据的免费解决方案。使用DeFelsko的PosiSoft解决方案，从我们的桌面版、一个易于使用的移动应用程序或PosiSoft USB（一个类似于闪存驱动器的简单gage接口）中选择。

了解更多PosiSoft解决方案.

测试计时器

当测量一种材料的硬度时PosiTector SHD公司具有屏幕计时器。当压头向下压时，计时器将自动开始倒计时。当时间（通常为3秒）过去时，进行测量。

连续读数

当不需要测试计时器或执行校准验证时，连续读取模式是称心的。启用时PosiTector SHD公司The Shore hardness reading will be displayed continuously.

statistical mode

Readings and statistics can be logged to memory for further analysis and reporting.Mean, standard deviation and min/max hardness statistics are used inPosiTector SHD.

HiLo Alert

HiLo Alerts onPosiTector SHDAllows the meter to audibly and visually alert the user when readings exceed user-specified limits.

automatic sublot

in the advanced modelPosiTector SHD, Auto Subbatch automatically creates new subbatches after storing the necessary number of readings.

What testing standard is there to measure Shore hardness?

The following standards are used to determine the Shore hardness of materials.

ASTM D2240 Standard Test Method for Rubber Properties Durometer Hardness

ASTM D2240 guides users in measuring the hardness of soft rubber.It defines appropriate techniques and procedures for measuring soft rubber, identifying twelve measurement types.

This method of measuring rubber hardness is called durometer

"4.1 This test method is based on the penetration of a specified type of indenter when pressed into a material under specified conditions."

ASTM D2240 Test Procedure (with PosiTector SHD)

1. Place the specimen on a flat, hard, level surface for positioning and stability.

2. Apply sufficient pressure on the specimen to ensure firm contact. Press down firmly and steadily to avoid slipping or scratching, which can cause false readings and possibly damage the probe tip

seeASTM D2240 standardA full description of the test criteria.

ISO 48-4:2018 Determination of hardness of vulcanized rubber or thermoplastic rubber - Part 4: Durometer indentation hardness (Shore hardness)

"The first edition of ISO 48-4 cancels and replaces the technically revised ISO 7619-1:2010."

According to ISO 48-4, the hardness (Shore hardness) of rubber, measured with a durometer, depends on the response of the rubber to the applied indentation. Responses vary and depend on many factors.