Overview
Shore hardness tester is an apparatus to measure vulcanized rubber
and plastic products. This apparatus has three models of Type A,
Type C and Type D,Type A and D respectively are applicable to the
testing of low and medium hardness, and high-hardness materials.
Type C applies to the testing of microporous material which is used
to make shoes, with compression rate 50 percent, stress 0.049 MPa
or above, and this kind of material is made of rubber plastic and
has blister in plastic.This hardness gauge conforms to the
regulations of GB/T531, GB2411, HG/T2489, JB6148.
Main technical parameters
1,Measuring range:0-100°
2,Measuring error:Within 20-90°,the error is less than or equal
to±1°
3,Resolution:0.1°
4,Pressure Needle Range:0-2.5mm
5,End pressure of Pressure Head:Type A and C :0.55N-8.05N Type
D:0-44.5N
Using methods
When using sample, one should place the sample in the solid plane,
hold the hardness gauge, keep the pressure needle at a distance of
at least 12 mm from the edge of the sample,smooth enough pressure
in the pressure on the sample, and the sample to a full extent.
until pressed to a full extent and contact the sample completely,
then read the calibration value within one second.At measuring
points which are at least 6 mm away from each other, measure
hardness values for five times, and calculate the average value(for
microporous material, the distance between the
measuring points should be at least 15 mm). In order to keep the
stability of conditions and improve the accuracy of determination,
one should install the hardness gauge on the same type of the
measuring shelf from a complete production network.smoothly press
on
Using instructions
1,Before using,please check the hardness tester should be display
“00.0” in free state(if don’t display,you can press “ZERO”
button).Place the hardness gauge on glass plate, and the pointer
should direct at a 100±1 degree angle (the end of pressure needle
and the bottom surface of
pressure foot should be closely in contact with the glass surface)
If the pointer doesn’t point to the zero position, it cannot be
used, either. It’s better to send it back to the factory for
adjustment.
2 Type D hardness tester on reference plane to check the zero
position,Under the heavy load,the hard pressure head is easy to
pressedreference plane,so must be put on standard gauge block on
the reference plane,when operating with hardness tester,the
indenter alignmentgage block center hole,then pressed hardness
tester,when the indenter foot completely stitching with standard
gauge block and reference plane,the hardness tester should be
display 10±1HD(Gauge block thickness 2.25 ± 0.0003mm is equal to
hardness tester into 10HD pressure depth),if can’t display
accurately,the hardness tester also cannot use.
3 Rubber sample shall be prepared according to the requirements of
GB/T531;plastic sample shall be prepared according to the
requirements of GB2411;Rubber microporous materials sample shall be
prepared according to the requirements of HG/T2489.
4 Before the test,rubber sample shall be prepared according to the
requirements of GB/T2941,GB/T2918 in the laboratory standard
temperature to test.
5 When measuring the sample, A-type hardness gauge’s value is more
than 90 degrees, it is recommended that one should use D-type
hardness gauge. When using D-type hardness gauge, the value is
below 20 degrees, it is recommended that one should use A-type
hardness gauge. When
A-type hardness gauge’s value is 10 degrees, it is not accurate,
and the measurement result can not
be used.
6,After complete using the hardness gauge, it should be wiped clean
and put into the device box,
and stored in dry place to prevent damp. The measurement shelf
should be wiped frequently and
be coated with a little anti-rust oil to prevent it from rusting,
moreover add No. 20 oil to the
flexible parts.
Shore Hardness Test Block Rubber Hardness Test Block Type a for Shore Durometer Kit to Measure 7 Different Color Block
