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本文主要介绍三个内容:1)插销试验程序及各个参数的测定方法;2)影响冷裂的各因素对σ_b60公斤/毫米~2的15MnVN钢冷裂敏感性的影响;3)应用插销试验结果为低拘束焊接结构提出防止冷裂的焊接条件的可能性。本试验所用设备为HCL—2型插销试验机,将在本刊下期介绍。
The main contents of this paper are three parts: 1) the test procedure of the plug and the method of determining each parameter; 2) the influence of various factors of cold cracking on the cold crack susceptibility of 15MnVN steel with σ_b60 kg / mm ~ 2; 3) For the low restraint welded structure to prevent the possibility of cold cracking welding conditions. The equipment used in this test for the HCL-2 bolt testing machine, will be introduced in this issue.