JP2016176142A5

JP2016176142A5 -

Info

Publication number: JP2016176142A5
Application number: JP2016024835A
Authority: JP
Filing date: 2016-02-12
Publication date: 2019-03-22

Claims

A method of manufacturing a product from rolled strip material,
Preparing a substrate (2) having a strip material made of a thin steel plate;
Rolling (V1) the substrate (2) to produce a rolled strip;
A first electrolytically coating an object to be Kutsugaezai (1) (V3) steps made of metal on said substrate (2, 20), the electrolytic coating is carried out the after rolling (V1), the steps,
(V4) applying the second coating material (15) as a scale protective coating to the substrate (2, 20) coated with the first coating material (1);
Hot forming the substrate (2, 20) (V6), wherein the hot forming is performed after deposition (V4) of the second covering material (15);
In a method comprising:
The second coating material (15) is prepared as a composite having a metal component, and the composition of the second coating material is such that the metal component provides a cathodic protection portion. are selected to consist primarily of elemental a base metal than thin steel sheet),
During the hot forming step (V6), a reduction in strength in the boundary region between the first covering material (1) and the substrate (2) is obtained, so that the boundary region is baked. A method characterized in that it has an increased ductility as compared to the substrate (2) placed .

The method of claim 1, wherein the composition of the second dressing (15) is selected such that the metal component comprises a predetermined proportion of metal particles.

The method of claim 2, wherein the proportion of metal particles relative to the total metal component of the second dressing is at least 5 weight percent and at most 95 weight percent.

The composition of the second dressing is selected such that the proportion of metal particles has one or more of the elements titanium, niobium and vanadium that form carbides. the method of.

The composition of the second coating material is such that the proportion of the metal particles has one or more particles of chromium, aluminum, titanium, tantalum, molybdenum, vanadium, and silicon as elements that generate ferrite. The method according to claim 3 or 4, wherein the method is selected.

The composition of the second dressing is selected such that the proportion of metal particles has particles having a particle size of at least 100 nanometers and a maximum of 10 micrometers. The method according to any one of the above.

7. The method according to claim 1, wherein zinc is used as the first dressing (1).

During the hot forming (V6), the substrate (2, 20), the first coating material (1), and the second coating material (15) are formed at the boundary portion of the substrate (2, 20). 8. A ductile alloy layer (17) is produced from the element of claim 1 and the ductile alloy layer (17) has improved ductility compared to the substrate (2, 20). The method according to claim 1.

During the hot forming (V6), the first coating material (1) and the second coating material are formed at a boundary portion between the first coating material (1) and the second coating material (15). The method according to claim 1, wherein the outer alloy layer is produced from the elements of the covering material.

Method according to claim 9, citing claim 8, wherein the ductile alloy layer (17) is produced from elements of the substrate and the outer alloy layer (18).

11. The method according to any one of claims 1 to 10, wherein the rolling (V1) of the substrate (2) is performed as a flexible rolling to form a thickness that varies along the length of the strip material.

Rolling manufactured from a thin steel sheet having a coating consisting of a first coating material (1) and a second coating material (15) manufactured by the method according to any one of claims 1 to 11. Products made of strip material.