Resistance spot welding method for joining zinc co

专利名称：Resistance spot welding method for joining zinc coated steel sheets
发明人：ムジーク，セリーヌ,ジュウ，カンイン,ユアン，ディディエ,マテーニュ，ジャン－ミシェル,ペル
ラド，アストリッド,フラピエ，ルノー
申请号：JP2019548681
申请日：20180227
公开号：JP2020514071A
公开日：
20200521
专利内容由知识产权出版社提供
摘要：A resistance spot welding method comprising the following successive steps: a step of preparing at least two steel plates having a thickness (th) between 0.5 and 3 mm, wherein at least one of the plates is A zinc or zinc alloy coated steel sheet (A) having a tensile strength (TS) higher than 800 MPa and a total elongation (TEL) such that (TS) x (TEL)> 14000 MPa%, the steel base of (A) The composition of the material is 0.05% ≦ C ≦0.4%, 0.3% ≦ Mn ≦ 8%, 0.010% ≦ Al ≦ 3%, 0.010% ≦ Si ≦ 2.09 by weight. %, Where 0.5% ≦ Si + Al ≦ 3.5%, 0.001% ≦ Cr ≦ 1.0%, 0.001% ≦ Mo ≦ 0.5%, and optionally 0. 005% ≦ Nb ≦ 0.1%, 0.005% ≦ V ≦ 0.2%, 0.005% ≦ Ti ≦ 0.1%, 0.0003% ≦ B ≦ 0.005%, 0.001% The surface of the steel sheet (A) such as -100 μm ≤ (IDept) ≤ 18.68 (Zn ) -55.1 containing ≤ Ni ≤ 1.0%, the balance being iron and unavoidable impurities. Step of performing resistance spot welding of the at least two steel plates to produce a weld having a recess depth (IDept), where (IDept) is expressed in micrometers and Zn at 750 ° C. Zn is the solubility of Zn in the steel of the plate (A), and is represented by wt%. The resistance spot welding method.
申请人：アルセロールミタル,ユニベルシテ・ドゥ・ナント
地址：ルクセンブルク国、１１６０・ルクセンブルク、ブールバール・ダブランシュ、２４－２６,フランス国、エフ－４４０３５・ナント・セデックス・１、ケ・ドゥ・トゥルビル・１・ベ・ペ・１３５２２
国籍：LU,FR
代理人：特許業務法人川口國際特許事務所
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