About this item

1、This steel anvil is an inspection tool for concrete, mortar, brick and other rebound meters for calibration.

2、The parts of this anvil are made of steel and tool steel. Anvil core and anvil body of the mating surface [Mohs taper 4] by grinding, anvil core surface hardness of HRC58-62.

3、The steel anvil is generally placed on the horizontal surface to calibrate the rebound meter, rebound meter vertical down for the bounce test, calibrate the rebound meter rate value.

Concrete rebound meter in the anvil for the average rate of the ballistic test rebound value of [N] = 80 ± 2;

Mortar rebound meter in the anvil for the average rate of the ballistic experiments for [N] = 74 ± 2.

4、The anvil as a test tool, was hit 5000 times -8000 times after the test, the anvil core along with the anvil body in the plane grinding flat reuse, but the anvil core hardness still need to maintain HRC58-62, otherwise shall not be used.

5、The anvil is usually kept in a dry and dustproof place to prevent rust and corrosion, and the surface of the ballistic test should not be bumped at will to test the standard state of the tool.

Introduction

To ensure the technical performance of reliability and accuracy of test hammer. If should be calibrated in a regular period.

The test hammer used regularly. User must self-test it according to the standard situation. Steel anvil is now the standard self-test apparatus. For impact energy of the test hammer＜2.207N.m, it is possible to self-test by Test anvil. Get rid of the dirt within the steel core, the hardness of the steel core is 60±3°.

Steel anvil is used for verification of the hammer when it used frequently on the test values, to test whether the rebound value Rm in the range of 80±2. However, you should rebound value to determine to determine whether the test hammer in the normal state is uncompleted. It must be proceed as follows that it can be thought that the test hammers technical state according accord to the standard and using requirements:

1. Check the pointer on the slider in the machine maximum static friction should be within the 0.5-0.8 N, if not meet the requirement, it may be adjusted.

2. Check the standard missile strike extension spring stretched the length of 61.5 mm, usually adjustable extension spring in the seat shells hit various holes location to meet the technical requirements.

3. The state of the instrument under normal operation, check the standard of strike tension spring is 75mm, that is measuring the length of the shell of the instrument. Users in the absence of Test Hammer Detector conditions, movements can be taken to get the instrument outside and plus correction:

Put the hammer hang on the hook, spring exposed to the impact surface of strike rod. Measured with a caliper the distance between them is 76±0.3mm.

4. Upon completion of the movement into instrument, check the decoupling point. That is the pointer slider groove in the graduated scale “100”, hammer decoupling. Lock nut and rotate the lid end loaded.

5. Steel anvil for verification of the test hammer, if the rebound value Rm=80±2, which can be thought the instrument basically meet the standard requirement. The test hammer can be put into use.

Before implementation of the above procedure, which is required to disassemble the test hammer and use gasoline or alcohol wash all the movement parts. After adjusting assembly size, wipe the center guide bar with oil, to form a thin layer of oil film, then equip assembly molding, steel anvil for verification of the test hammer at last. By following the above procedure to debug and test, which is as the same as the test hammer detector test results.