FIELD: metallurgy.
SUBSTANCE: group of inventions relates to ferrous metallurgy and includes a method of producing coated steel sheet, coated steel sheet and a welded joint. It can be used in manufacture of motor vehicles. Sheet steel with preliminary applied first coating containing iron and nickel is subjected to thermal treatment at temperature in range between 600 and 1000 °C and applying a second zinc-based coating. Weld joint is made by contact spot welding of at least two sheet steels and contains less than 3 cracks with size making more than 100 mcm. At that said crack features length smaller than 500 mcm.
EFFECT: prevention of liquid-metal embrittlement during welding and increase of coating adhesion.
29 cl, 3 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MAKING GALVANIZED AND ANNEALED STEEL SHEETS | 2018 |
|
RU2738130C1 |
| METHOD FOR MANUFACTURING COATED SHEET STEEL | 2018 |
|
RU2759389C2 |
| METHOD OF MAKING GALVANIZED AND ANNEALED STEEL SHEETS RESISTANT TO LIQUID METAL EMBRITTLEMENT | 2018 |
|
RU2729236C1 |
| METHOD FOR MANUFACTURING ZINC-COATED STEEL SHEET RESISTANT TO LIQUID METAL EMBRITTLEMENT | 2018 |
|
RU2761927C1 |
| METHOD OF RESISTANCE SPOT WELDING FOR CONNECTION OF SHEET STEELS WITH APPLIED ZINC COATING | 2018 |
|
RU2726166C1 |
| METHOD OF PRODUCING HIGH-STRENGTH SHEET STEEL, CHARACTERIZED BY HIGH PLASTICITY, DEFORMABILITY AND WELDABILITY, AND PRODUCED SHEET STEEL | 2018 |
|
RU2732261C1 |
| COATED METAL SUBSTRATE | 2018 |
|
RU2764252C2 |
| GALVANIZED STEEL SHEET WITH HIGH WELDABILITY DURING CONTACT SPOT WELDING | 2018 |
|
RU2732714C1 |
| METHOD OF PRODUCING HIGH-STRENGTH SHEET STEEL, CHARACTERIZED BY IMPROVED DUCTILITY AND MOLDABILITY, AND OBTAINED SHEET STEEL | 2016 |
|
RU2725929C2 |
| METHOD OF PRODUCING HIGH-STRENGTH SHEET STEEL, CHARACTERIZED BY IMPROVED DUCTILITY AND MOLDABILITY, AND OBTAINED SHEET STEEL | 2016 |
|
RU2728369C2 |
