Introduction

 According to the principle of Brinell hardness test, PHB-1 hammer
  impact Brinell hardness tester applies test force by hammer
  impact, accurately controls test force by shear pins, uses reading
  microscope to read the diameter of round indentation on
  specimen after testing, gets accurate Brinell hardness value
  through conversion table.

 1580kg test force, Ф7.26mm spherical indenter, F/D2=30. The 
  test condition is equivalent to the commonly used 3000kg
  test force, Ф10mm ball condition.

 large test force, low requirement for smooth finish of specimen
  surface.

 Test force is controlled accurately; testing result has high
  accuracy and repeatability.

 With tolerance 5~6%.; accuracy is much higher than traditional
  Poldi type hammer impact Brinell hardness tester.

 Only one inexpensive shear pin is consumed in each test.; low
  testing cost.

 Easy, quick and simple operation; no sampling required; high
  accuracy.

 Suitable for testing hardness of large, unmovable and non-
  cutting castings and forgings.