根据试样的规格，依据标准GB/T 229-2007中的相关规定将试样加工成测试需要的几何形状，因实验室温度在20℃左右，室温下测试试样的吸收能量，并且将试样放置于0℃、-20℃、-40℃、-60℃、-80℃及-100℃的介质溶液中，待试样达到规定温度后取出进行冲击性能试验，实验过程中试样紧贴试验机砧座，锤刃沿缺口对称面打击试样缺口的背面。

According to the specification of the sample and the relevant provisions in the standard GB / T 229-2007, the sample shall be processed into the geometry required for testing. Since the laboratory temperature is about 20 ℃, the absorbed energy of the sample shall be tested at room temperature, and the sample shall be placed in the medium solution of 0 ℃, - 20 ℃, - 40 ℃, - 60 ℃, - 80 ℃ and - 100 ℃. After the sample reaches the specified temperature, it shall be taken out for impact performance test, During the experiment, the sample is close to the anvil of the testing machine, and the hammer edge strikes the back of the sample notch along the symmetrical plane of the notch.