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本文介绍了平板刚性拘束焊接裂纹试验方法的基本原理、试验装置及其主要技术参数的测试,试验程序和该装置在焊接冷裂纹试验研究中的应用。结论认为:平板刚性拘束焊接裂纹试验法是一种装置简单的裂纹定量试验法。用该方法可以定量评定扩散氢含量、拘束度和其它工艺因素对钢材冷裂敏感性的影响,可以测定钢材冷裂临界拘束度和临界拘束应力,为制定实际焊接接头防止焊接冷裂纹的焊接条件提供科学依据。
This paper introduces the basic principle of rigid rigid plate welding crack test method, the test device and the main technical parameters of the test, the test procedure and the application of the device in the study of cold cracking test. The conclusion is that the flat rigid constraint welding crack test method is a simple crack quantitative test method. This method can quantitatively evaluate the influence of diffusible hydrogen content, restraint degree and other process factors on the cold cracking susceptibility of steel, and can determine the critical restraint degree and critical restraining stress of steel cold cracking. In order to make the actual welding joint to prevent the welding cold cracking welding conditions Provide a scientific basis.