Steel plate for punching-welding axle housing and manufacturing method thereof
A manufacturing method and technology of stamping and welding bridges, which are applied to high-performance steel plates formed by 600MPa-level hot stamping and their manufacturing fields, can solve problems such as difficult to meet strength and low strength levels, achieve unique process path control, improve the cleanliness of molten steel, The effect of a wide range of thickness specifications
Image
Examples
Embodiment １
[0049] C: 0.16%, Si: 0.04%, Mn: 1.48%, P: 0.010%, S: 0.003%, Nb: 0.027%, V: 0.039%, Ti: 0.019%, Al: 0.029%, CEV: 0.41%. The rest is Fe and unavoidable impurities.
[0050] The production method of steel plate is as follows:
[0051] 1) The temperature of the molten iron after pretreatment with KR is 1355°C, and the [S] in the treated molten iron is 0.001%.
[0052] 2) The carbon composition at the end point of converter smelting is controlled at [C]=0.074%, Si=0.0045%, S=0.009%, P=0.012%, and the end point temperature is 1640°C; the tapping time of double-block slag is 4.7 minutes, and the tapping process is guaranteed The ladle is stirred with argon blowing throughout.
[0053] 3) In the deoxidation alloying process, the amount of high-carbon ferromanganese, aluminum manganese, ferro-niobium, and ferro-vanadium alloys is converted according to the actual tapping amount and alloy composition, and the alloy is added before 4 / 5 of the tapping; blowing argon at the CAS station ...
Embodiment 2
[0062] C: 0.17%, Si: 0.03%, Mn: 1.54%, P: 0.012%, S: 0.004%, Nb: 0.036%, V: 0.043%, Ti: 0.024%, Al: 0.032%, CEV: 0.44%. The rest is Fe and unavoidable impurities.
[0063] The production method of steel plate is as follows:
[0064] 1) The temperature of the molten iron after pretreatment with KR is 1371°C, and [S] in the treated molten iron is 0.003%.
[0065] 2) The carbon composition at the end point of converter smelting is controlled at [C]=0.10%, Si=0.0005%, S=0.010%, P=0.0086%, and the end point temperature is 1642°C; the tapping time of double-block slag is 4.8 minutes, and the tapping process is guaranteed The ladle is stirred with argon blowing throughout.
[0066] 3) In the deoxidation alloying process, the amount of high-carbon ferromanganese, aluminum manganese, ferro-niobium, and ferro-vanadium alloys is converted according to the actual tapping amount and alloy composition, and the alloy is added before 4 / 5 of the tapping; blowing argon at the CAS station Fee...
Embodiment 3
[0075] C: 0.18%, Si: 0.04%, Mn: 1.58%, P: 0.008%, S: 0.001%, Nb: 0.042%, V: 0.046%, Ti: 0.026%, Al: 0.035%, CEV: 0.45%. The rest is Fe and unavoidable impurities.
[0076] The production method of steel plate is as follows:
[0077] 1) The temperature of the molten iron after pretreatment with KR is 1367°C, and [S]=0.002% in the treated molten iron.
[0078] 2) The carbon composition at the end point of converter smelting is controlled at [C]=0.061%, Si=0.003%, S=0.008%, P=0.010%, and the end point temperature is 1650°C; the tapping time of double-block slag is 4.7 minutes, and the tapping process is guaranteed The ladle is stirred with argon blowing throughout.
[0079] 3) In the deoxidation alloying process, the amount of high-carbon ferromanganese, aluminum manganese, ferro-niobium, and ferro-vanadium alloys is converted according to the actual tapping amount and alloy composition, and the alloy is added before 4 / 5 of the tapping; blowing argon at the CAS station Feed th...
PUM
| Property | Measurement | Unit |
|---|---|---|
| yield strength | aaaaa | aaaaa |
| tensile strength | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- IPC
- C22C38/14; C22C33/04; C21D8/02; B60B35/16
- Inventors
- 胡淑娥; 孙卫华