本文介绍一种测定焊缝金属抗热裂缝性能的试验装置。该装置以普通车床的走刀架为变形动力,使在组合试板上熔敷的焊缝金属在结晶过程中产生近支点弯曲变形,测得表示其抗热裂缝能力的临界变形速度,以此作为定量指标,可对有关因素对于焊缝金属抗热裂缝性能的影响作出定量评定,为拟定焊条成分提供依据。 This article presents a test device for determining the resistance to hot cracking of weld metal. The device uses a conventional turning lathe turret as the deformation power, so that the weld metal welded in the combination test plate near the fulcrum bending deformation during the crystallization process, measured the critical deformation rate of resistance to thermal cracking, as a As a quantitative index, the influence of relevant factors on the hot cracking resistance of the weld metal can be quantitatively evaluated, which provides a basis for the preparation of the electrode composition.