TH45385B - High strength hot dip galvanized steel sheet, which has excellent formability and spot welding properties. And such production method - Google Patents
High strength hot dip galvanized steel sheet, which has excellent formability and spot welding properties. And such production methodInfo
- Publication number
- TH45385B TH45385B TH1101000097A TH1101000097A TH45385B TH 45385 B TH45385 B TH 45385B TH 1101000097 A TH1101000097 A TH 1101000097A TH 1101000097 A TH1101000097 A TH 1101000097A TH 45385 B TH45385 B TH 45385B
- Authority
- TH
- Thailand
- Prior art keywords
- proportion
- area
- steel sheet
- production method
- spot welding
- Prior art date
Links
- 229910001335 Galvanized steel Inorganic materials 0.000 title abstract 2
- 239000008397 galvanized steel Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000003466 welding Methods 0.000 title abstract 2
- 229910000859 α-Fe Inorganic materials 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910000734 martensite Inorganic materials 0.000 abstract 2
- 235000019362 perlite Nutrition 0.000 abstract 2
- 239000010451 perlite Substances 0.000 abstract 2
- 239000012535 impurity Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
Abstract
DC60(20/04/54) แผ่นเหล็กกล้าเคลือบสังกะสีแบบจุ่มร้อนความแข็งแรงสูงซึ่งมีความทนต่อแรงดึงTS540 MPaขึ้นไปรวมทั้งมีคุณสมบัติการขึ้นรูป(การยืดตัวสูงและความสามารถในการขยายรูสูง)และคุณ สมบัติการเชื่อมจุดที่ดีเยี่ยมและวิธีการผลิตดังกล่าวส่วนประกอบส่วนผสมมีองค์ประกอบของC: 0.04%ขึ้นไปแต่ไม่เกิน0.10%,Si:0.7%ขึ้นไปแต่ไม่เกิน2.3%,Mn:0.8%ขึ้นไปแต่ไม่เกิน2.0%,P :ไม่เกิน0.03%,S:ไม่เกิน0.003%,Al:ไม่เกิน0.1%,N:ไม่เกิน0.008%โดยมวล%รวมทั้งทำให้ [C%]x[Si%]น้อยกว่าหรือเท่ากับ0.20([C%],[Si%]ในสูตรแสดงถึงปริมาณองค์ประกอบ(มวล%)ของC,Si) กลายเป็นจริง,ส่วนที่่เหลือประกอบด้วยเหล็กและสิ่งเจือปนที่หลีกเลี่ยงไม่ได้,และโครงสร้างจุลภาคมี เฟสเฟอร์ไรต์ร้อยละ75ขึ้นไปและเฟสเบนไนติกเฟอร์ไรต์ร้อยละ1ขึ้นไปและเฟสเพอร์ไลต์ร้อยละ1 ขึ้นไปแต่ไม่เกินร้อยละ10โดยสัดส่วนพื้นที่นอกจากนั้นยังมีสัดส่วนพื้นที่ของเฟสมาร์เทนไซต์น้อยกว่า ร้อยละ5รวมทั้งทำให้สัดส่วนพื้นที่มาร์เทนไซต์/(สัดส่วนพื้นที่เบนไนติกเฟอร์ไรต์+สัดส่วนพื้นที่ เพอร์ไลต์)น้อยกว่าหรือเท่ากับ0.6กลายเป็นจริง รูปที่เลือกใช้รูปที่1 DC60(20/04/54) High strength hot dipped galvanized steel sheet with tensile strengthTS540. MPa and above, including forming properties (high elongation and high hole expansion ability) and you Excellent spot welding properties and the production method. The ingredients are composed of C: 0.04% or more but not more than 0.10%, Si: 0.7% or more but not more than 2.3%, Mn: 0.8% or more but not more than More than 2.0%,P : not more than 0.03%, S: not more than 0.003%, Al: not more than 0.1%, N: not more than 0.008% by mass % including making [C%]x[Si%] is less than or equal to 0.20([C%],[Si%] in the formula represents the elemental content(mass%) of C,Si) becomes true, the rest consists of iron and other substances. impurities are inevitable, and the microstructure has 75% or more ferrite phase, 1% or more bennitic ferrite phase, and 1% perlite phase. or more, but not more than 10 percent in proportion to the area. In addition, there is a smaller proportion of the area of the martensite phase. 5 percent including the proportion of martensite area/(proportion of bennitic ferrite area + proportion of area perlite) less than or equal to 0.6 becomes true The picture used is picture 1.
Claims (1)
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TH45385B true TH45385B (en) | 2014-10-08 |
| TH137159A TH137159A (en) | 2014-10-08 |
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