KR930700694A - High strength steel sheet for forming and manufacturing method - Google Patents

Abstract

No content.

Description

High strength steel sheet for forming and manufacturing method

Since this is an open matter, no full text was included.

1 shows the relationship between the saddle characteristic value and the Si content from the above measurement results.

2 (a) and 2 (b) are the ratio of C weight% and effective ^* Ti (effective amount ^* Ti weight%-Ti weight%-1.5 S weight%-3.S weight%-3.43 N weight%) to the crystal grain size ^* Ti weight% The relationship of / C% by weight is shown,

3 (a), 3 (b), 3 (c) and 3 (d) are C: 0.05 wt%, Si: 0 wt%, 1.0 wt%, 1.5 wt% or 2.0 wt%, Mn: 0.01 wt% 4 after the cold-rolled steel sheet containing Ti: 0.206% by weight, B: 0.0008% by weight, Al: 0.04% by weight, P: 0.01%, S: 0.001% by weight, and N: 0.0014% by weight at 720 ° C. The pole figure for the steel plate of the species is shown.

Claims (13)

C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: from 0.0005% by weight to 0.005% by weight, Al: up to 0.1% by weight, P: up to 0.1% by weight, S: up to 0.02% by weight, N: up to 0.005% by weight, and the remaining components are iron and unavoidable impurities High strength steel sheet for forming processing consisting of. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: 0.0005% by weight to 0.005% by weight, Al: up to 0.1% by weight, P: up to 0.1% by weight, S: up to 0.02% by weight, N: up to 0.005% by weight, and V: 0.02% by weight To 0.2% by weight, Nb: from 0.02% to 0.2% by weight, Zr: from 0.02% to 0.2% by weight of at least one of the components, the remaining high strength steel sheet for forming and processing is composed of iron and inevitable impurities. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: from 0.0005% by weight to 0.005% by weight, Al: up to 0.1% by weight, P: up to 0.1% by weight, S: up to 0.02% by weight, N: up to 0.005% by weight, and Cr: from 0.05% by weight Up to 1.5% by weight, Nr: 0.05% to 2.0% 5, Mo: 0.05% to 1.0% by weight, Cu: 0.05% to 1.5% by weight of at least one component and the remaining components are iron and unavoidable impurities High strength steel sheet for forming processing consisting of. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: 0.0005% to 0.005% by weight, Al: 0.1% by weight, P: 0.1% by weight, S: 0.02% by weight, N: 0.005% by weight, and V: 0.02% by weight To 0.2% by weight, Nb: 0.02% to 0.2% by weight, Zr: 0.02% to 0.2% by weight of at least one component, Cr: 0.05% to 1.5% by weight, Ni: 0.05% by weight To 2.0% by weight, Mo: 0.05% to 1.0% by weight, Cu: 0.05% by weight to 1.5% by weight of at least one of the components, and the remaining components are composed of iron and inevitable impurities. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: 0.0005% by weight to 0.005% by weight, Ca: 0.005% by weight to 0.005% by weight, Al: 0.1% by weight, P: 0.1% by weight, S: 0.02% by weight, N: 0.005% by weight High strength steel sheet for forming processing up to%, with the remaining components consisting of iron and inevitable impurities. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: 0.0005% to 0.005% by weight, Ca: 0.005% to 0.05%, Al: 0.1% by weight, P: 0.1% by weight, S: 0.02% by weight, N: 0.005% by weight %, And from V: 0.02% to 0.2% by weight, Nb: 0.02% by weight to 0.2% by weight, Zr: 0.02% by weight to 0.2% by weight of at least one of the components and iron and unavoidable impurities High strength steel sheet for forming processing consisting of. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: 0.0005% by weight to 0.005% by weight, Ca: 0.005% by weight to 0.005% by weight, Al: 0.1% by weight, P: 0.1% by weight, S: 0.02% by weight, N: 0.005% by weight %, From 0.05% to 1.5% by weight of Cr, from 0.05% to 2.0% by weight of Ni, from 0.05% to 1.0% by weight of Mo, and from 0.05% to 1.5% by weight of Cu: 0.05% by weight. High strength steel sheet for forming and processing, which has at least one component and consists of iron and inevitable impurities of the remaining components. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: 0.0005% by weight to 0.005% by weight, Ca: 0.005% by weight to 0.005% by weight, Al: 0.1% by weight, P: 0.1% by weight, S: 0.02% by weight, N: 0.005% by weight %, From 0.02% to 0.2% by weight, Nb: from 0.02% to 0.2% by weight, Zr: from 0.02% to 0.2% by weight Cr: from 0.05% to 1.5% by weight Ni: High strength for molding processing having at least one component from 0.05% to 2.0% by weight, Mo: 0.05% to 1.0% by weight, Cu: 0.05% to 1.5% by weight, and consisting of iron and inevitable impurities of the remaining components Grater. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: from 0.0005% to 0.005% by weight, Al: up to 0.1% by weight, P: up to 0.1% by weight, S: up to 0.02% by weight, and N: up to 0.005% by weight And heating the steel slab at a temperature of 1100 ° C. or more and 1280 ° C. or less, followed by hot rolling to obtain a hot rolled steel sheet. Following the hot rolling according to claim 9, electroplating or hot-dip plating is performed to produce a high strength steel sheet for forming. C: 0.01% to less than 0.1% by weight, Si: 0.1% to 1.2% by weight Mn: to 3.0% by weight, Ti: effective represented by the following formula ^* Ti (% by weight) and the above C (% by weight) Ratio, ie, effective ^* Ti (% by weight) / C (% by weight) is 4 to 12, but effective ^* Ti (% by weight) = Ti (% by weight)-1.5S (% by weight)-3.43 N (% by weight) ), B: from 0.0005% to 0.005% by weight, Al: up to 0.1% by weight, P: up to 0.1% by weight, S: up to 0.02% by weight, and N: up to 0.005% by weight And heating the steel slab at a temperature of 1100 ° C. or more and 1280 ° C. or less, followed by hot rolling and cold rolling, followed by annealing at a recrystallization temperature or more. Following the annealing as recited in claim 11, electroplating or hot-dip plating is carried out. ※ Note: The disclosure is based on the initial application.