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首页> 外国专利> HIGH HEAT INPUT BUTT-WELDED JOINT HAVING EXCELLENT BRITTLE FRACTURE GENERATION RESISTING PROPERTY AND METHOD FOR VERIFYING BRITTLE FRACTURE GENERATION RESISTING PROPERTY OF HIGH HEAT INPUT BUTT-WELDED JOINT

HIGH HEAT INPUT BUTT-WELDED JOINT HAVING EXCELLENT BRITTLE FRACTURE GENERATION RESISTING PROPERTY AND METHOD FOR VERIFYING BRITTLE FRACTURE GENERATION RESISTING PROPERTY OF HIGH HEAT INPUT BUTT-WELDED JOINT

机译：具有优异的脆性断裂产生抗性的高热输入焊缝接头以及用于验证高热输入性焊缝产生的抗脆性断裂的性能的方法

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PROBLEM TO BE SOLVED: To form a welded joint having excellent brittle fracture generation resisting properties (fracture toughness value Kc) in high heat input butt-welding for a high strength thick steel plate, and to verify the properties.;SOLUTION: In the welded joint, (a1) the ratio between the hardness Hv(WM) of a weld metal and the hardness Hv(BM) of a base material, Hv(WM)/Hv(BM) is 1.1, or (a2) the hardness Hv(WM) of the weld metal is ≤210, and also, the fracture toughness value Kc of the weld zone satisfies (b1) 2,000 N/mm1.5 or (b2) Kc≥Kq(=σD√(πa), σD: design stress, and a: assumed defective dimensions). Its brittle fracture generation resisting properties (fracture toughness value Kc) are verified by confirming the facts that actual hardness value satisfies the above (a1) or (a2) and actual absorbed energy vE satisfies requirement vE and using predicted Kc value based on transition temperature vTrs.;COPYRIGHT: (C)2006,JPO&NCIPI
机译：解决的问题：在高强度厚钢板的高热输入对接焊接中，形成具有优异的抗脆性断裂产生性能（断裂韧性值Kc）的焊接接头，并验证其性能。 （a1）焊接金属的硬度Hv（WM）与母材的硬度Hv（BM）之比Hv（WM）/ Hv（BM）<1.1，或者（a2）硬度Hv焊接金属的（WM）为210，并且，焊接区的断裂韧性值Kc满足（b1）> 2,000 N / mm 1.5 或（b2）Kc＆ge; Kq（= ＆＆＆＆ D ＆radic;（＆pi; a），＆＆ Sub＆ D ：设计应力，a：假定的缺陷尺寸）。通过确认实际硬度值满足上述（a1）或（a2）并且实际吸收能量vE满足要求vE并使用基于转变温度vTrs的预测Kc值来验证其脆性耐断裂产生性（断裂韧性值Kc） 。;版权：（C）2006，JPO＆NCIPI

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