據鍛件的重要性及材料特性來確定檢驗項目。力學性能試樣必須從同一熔煉爐，同一熱處理爐中取出的鍛件上切取。試樣切取、試樣形狀尺寸、檢驗方法均按國家標準規定進行。
The inspection items are determined according to the importance and
material properties of the forgings. The mechanical properties of the
specimens must be cut from the forgings taken from the same smelting
furnace and the same heat treatment furnace. Sample cutting, sample size
and testing methods are carried out in accordance with national
standards.
(1)硬度試驗硬度試驗是生產中常用的、判斷鍛件力學性能最簡便的方法。硬度試驗的目的是：保證鍛件機械加工時有正常的切削性能；判斷鍛件表面的脫碳情況；了解鍛件內部組織的不均勻程度。硬度試驗一般在鍛件熱處理后進行，可使用布氏硬度或洛氏硬度計等。
(1) hardness test is the easiest way to judge the mechanical
properties of forgings in production. The purpose of the hardness test
is to ensure the normal cutting performance of the forging parts, to
judge the decarbonization of the forgings, and to understand the
inhomogeneous degree of the internal structure of the forgings. Hardness
test is usually carried out after forging heat treatment. Brinell
hardness or Rockwell hardness tester can be used.
(2)拉伸試驗測定在單向靜拉力下的屈服極限仃。、強度極限crb、延伸率艿及截面收縮率等。
(2) tensile test is used to determine yield limit under uniaxial
tension. The ultimate strength is CRB, elongation and shrinkage.
(3)沖擊試驗用來檢驗材料或鍛件的韌性。工作時受沖擊載荷與振動載荷，或在高溫、高速下工作的零件，如渦輪盤、渦輪葉片等，一般需要進行沖擊試驗。
(3) impact test is used to check the toughness of materials or
forgings. Shock tests are usually required for working parts, such as
shock loads and vibration loads, or parts operating at high temperatures
and high speeds, such as turbine discs and turbine blades.
