The ball pressure tester GB4706.1-2005 GB2099.1-2008, GB/T5159.21-2006, IEC60695-10-2: 2003 standard is made. 2, the ball pressure test will require ball (R2.5mm) and total test force of 20N ± 0.2N ball pressure tester, the pressure in the test sample surface was the standard of state and placed in the heating box in the test sample, temperatures after 60min +2 min/0min will test product fast (<10s) immersed in 20 ° C ± 5 ° C water cooling 6min ± 2min, 3min within the measurement surface indentation diameter of the test product removed from the water, as the indentation diameter is more than 2mm to assess the ability to heat deformation of the test sample in the specified temperature. Technical parameters: 1, the ball diameter: 5mm (R2.5mm) 2, the total test pressure: 20N ± 0.2N 3, samples bearing: diameter 50mm, length 100mm solid stainless steel cylinder 4, the production material: all stainless steel, reference standard: GB4706.1-2005 GB2099.1-2008, GB/T5159.21-2006, IEC60695-10-2: 2003 Note: ball pressure test apparatus also required a high temperature box (oven) supporting the use of