中锰抗磨球墨铸铁试棒如何真实反映产品的机械性能,这是一个比较突出的问题。(高铬白口铁、镍硬铸铁亦属如此)因这类材质试棒硬度高,铸态不允许退火,加工困难。所以,一般标准规定试棒为全部毛坯。由于试棒尺寸固定不变,而产品尺寸、壁厚、重量却千差万别,固定试棒很难真实反映 Medium manganese anti-wear ductile iron test bar how to truly reflect the mechanical properties of products, this is a more prominent issue. (High-chromium white iron, nickel hard cast iron is also the case) because of such material test rod hardness, as-cast is not allowed annealing, processing difficulties. Therefore, the general standard test rods for all rough. As the test rod size is fixed, but the product size, wall thickness, weight varies widely, the fixed test bar is difficult to truly reflect