摘要:
The invention relates to a hot formable strip, sheet or blank which is formable at a temperature of 600°C or above, comprising a substrate of hot formable steel coated with a corrosion protective coating. According to the invention, the coated steel substrate is covered by a metal-phosphate solution containing zinc and optionally at least one element of manganese, aluminium, nickel, magnesium, titanium, copper and calcium. The invention also relates to a process to produce such strip, sheet or blank, a method for hot forming a product using such a strip, sheet or blank and a hot formed product using such a strip, sheet or blank.
摘要:
The invention relates to a method for hot forming a part, wherein the hot forming is performed starting with a metal coated steel blank, which is heated to a temperature between the Ac3-temperatur of the steel and 1000° C in a furnace, after which the heated blank is transported to a hot forming press, and the heated blank is pressed in the hot forming press to form a part. According to the invention, the steel has the following composition in weight%: C: 0.10 - 0.25, Mn: 1.6 - 2.6, Si:
摘要:
A method for manufacturing a coated part having very high mechanical properties using hot forming techniques. The method includes: —providing an annealed steel strip or blank or pre-shaped part that was coated with a metal or metal alloy before the annealing —if a strip is provided, cutting a blank from the strip before or after the annealing —optionally forming a pre-shaped part from the blank —heating the blank or preshaped part to a temperature of 500° C. at an average heating rate of 16° C./s or more —further heating the blank or pre-shaped part to a temperature between 700 and 1000° C. —hot forming the blank or preshaped part into a hot formed part —hardening the hot formed part. A method for manufacturing a coated steel strip, blank or pre-shaped part, and a coated steel strip, blank or part and a hot formed part.
摘要:
A method for manufacturing a coated part having very high mechanical properties using hot forming techniques. The method includes: —providing an annealed steel strip or blank or pre-shaped part that was coated with a metal or metal alloy before the annealing —if a strip is provided, cutting a blank from the strip before or after the annealing —optionally forming a pre-shaped part from the blank —heating the blank or preshaped part to a temperature of 500° C. at an average heating rate of 16° C./s or more —further heating the blank or pre-shaped part to a temperature between 700 and 1000° C. —hot forming the blank or preshaped part into a hot formed part —hardening the hot formed part. A method for manufacturing a coated steel strip, blank or pre-shaped part, and a coated steel strip, blank or part and a hot formed part.
摘要:
The invention relates to a product formed by hot forming of a metallic coated steel sheet, wherein the formed product has a substrate layer of hot formed steel, a metal affected zone and a diffusion coating layer on the substrate layer, and optionally a metal oxide layer on the diffusion coating layer. According to the invention a low carbon zone is present between the substrate layer and the metal affected zone. The invention also relates to a method for producing a metallic coated hot formed product, and to a steel strip to be used in the method.
摘要:
The invention relates to a. method for manufacturing a coated steel part having very high mechanical properties using hot forming techniques. According to the invention, the method comprises the following steps: • providing a coated steel blank comprising a steel substrate with a coating layer • heating the blank to a temperature of 800° C or more in a furnace • transporting the heated blank from the furnace and placing the blank in a hot forming press • hot forming the blank in the press to form the coated steel part • quenching the coated steel part wherein the heated blank has a temperature of at most 780° C when placed in the hot forming press. The invention also relates to a hot formed part manufactured using the method according to the invention.