TH171452B - Excellent high-strength zinc-coated steel plate in a stretch-flange forming condition provides in-plane stability of a stretch-flange forming condition. And bending conditions and methods for the production of steel sheets. - Google Patents
Excellent high-strength zinc-coated steel plate in a stretch-flange forming condition provides in-plane stability of a stretch-flange forming condition. And bending conditions and methods for the production of steel sheets.Info
- Publication number
- TH171452B TH171452B TH1701001037A TH1701001037A TH171452B TH 171452 B TH171452 B TH 171452B TH 1701001037 A TH1701001037 A TH 1701001037A TH 1701001037 A TH1701001037 A TH 1701001037A TH 171452 B TH171452 B TH 171452B
- Authority
- TH
- Thailand
- Prior art keywords
- stretch
- less
- flange forming
- forming condition
- steel plate
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract 6
- 239000010959 steel Substances 0.000 title claims abstract 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract 4
- 239000011701 zinc Substances 0.000 title claims abstract 4
- 229910052725 zinc Inorganic materials 0.000 title claims abstract 4
- 238000005452 bending Methods 0.000 title claims abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract 2
- 239000008397 galvanized steel Substances 0.000 claims abstract 2
- 229910000734 martensite Inorganic materials 0.000 abstract 4
- 230000032683 aging Effects 0.000 abstract 1
- 229910001566 austenite Inorganic materials 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910000529 magnetic ferrite Inorganic materials 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 abstract 1
Abstract
สิ่งที่ได้จัดให้มีขึ้นคือแผ่นเหล็กกล้าชุบเคลือบสังกะสีความแข็งแรงสูงซึ่งดีเยี่ยมในสภาพขึ้น รูปแบบสเทรตช์-แฟลงจ์ได้ เสถียรภาพในระนาบของสภาพขึ้นรูปแบบสเทรตช์-แฟลงจ์ได้ และ สภาพดัดขึ้นรูปได้ และวิธีการเพื่อการผลิตแผ่นเหล็กกล้านั้น แผ่นเหล็กกล้าชุบเคลือบสังกะสีความแข็งแรงสูงมี C 0.12% ถึง 0.25% Si 0.01% ถึง 1.00% Mn 1.5% ถึง 4.0% P 0.100% หรือน้อยกว่า S 0.02% หรือน้อยกว่า Al 0.01% ถึง 0.10% N 0.001% ถึง 0.010% Ti 0.005% ถึง 0.100% และ B 0.0005% ถึง 0.0050% โดยส่วนที่เหลือเป็น Fe และ สิ่งเจือปนที่หลีกเลี่ยงไม่ได้ โดยที่ Ti > 4N ได้รับการทำให้สอดคล้องเป็นจริง แผ่นเหล็กกล้าชุบ เคลือบสังกะสีความแข็งแรงสูงมีมาร์เทนไซต์ 80% ถึง 100% ในเทอมของเศษส่วนโดยพื้นที่ เฟอร์ไรต์ รูปหลายเหลี่ยม 5% หรือน้อยกว่า (รวมถึง 0%) ในเทอมของเศษส่วนโดยพื้นที่ และออสเทนไนต์คง ค้างน้อยกว่า 3% (รวมถึง 0%) ในเทอมของเศษส่วนโดยพื้นที่ ความแข็งเฉลี่ยของมาร์เทนไซต์คือ 400 ถึง 500 ในเทอมของความแข็งแบบวิกเกอร์ส (Hv) ขนาดเกรนเฉลี่ยของมาร์เทนไซต์คือ 20 ไมโครเมตร หรือน้อยกว่า ค่าเบี่ยงเบนมาตรฐานของขนาดเกรนของมาร์เทนไซต์คือ 7.0 ไมโครเมตร หรือน้อยกว่า What it provides is a high strength galvanized steel sheet which is excellent in conditions of aging. Stretch-flange format In-plane stability of stretch-flange forming conditions and possible bending conditions. And methods for the production of steel sheets High strength zinc coated steel plate contains C 0.12% to 0.25% Si 0.01% to 1.00% Mn 1.5% to 4.0% P 0.100% or less S 0.02% or less Al 0.01% to 0.10% N 0.001% to 0.010 % Ti 0.005% to 0.100% and B 0.0005% to 0.0050% with residual Fe and inevitable impurity where Ti> 4N is realized. Plated steel plate High-strength zinc coatings contain 80% to 100% martensite in the fraction term by 5% or less polygon ferrite area (including 0%) in the fraction term by area. And austenite outstanding is less than 3% (including 0%) in the fraction term by area. The mean martensite hardness is 400 to 500 in the Vickers' hardness (Hv) term. The mean grain size of the martensite is 20 micrometers or less, the standard deviation of the Martensite grain size. Tenacity is 7.0 μm or less.
Claims (1)
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TH171452A TH171452A (en) | 2017-12-14 |
| TH171452B true TH171452B (en) | 2017-12-14 |
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