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B48 0 GNQR钢是我国新生产的一种耐大气腐蚀钢。本文采用斜 Y形坡口焊接裂纹试验、插销试验、高温拉伸试验和模拟热影响区粗晶区再热裂纹试验方法分别评定了 B480 GNQR耐候钢冷裂纹、热裂纹和再热裂纹的敏感性。
B48 0 GNQR steel is a newly produced atmospheric corrosion resistant steel in China. In this paper, the sensitivity of cold crack, hot crack and reheat crack of B480 GNQR weathering steel were evaluated by oblique Y-groove weld crack test, bolt test, high temperature tensile test and simulated hot zone reheat crack test .