Hot-rolled high-strength steel plate for electrostatic enamel and method for manufacturing same
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of high-strength steel plate and manufacturing method, applied in temperature control, manufacturing tools, heat treatment process control, etc., can solve problems such as unsuitability of double-sided wet enamel steel plate
Active Publication Date: 2008-03-12
BAOSHAN IRON & STEEL CO LTD
View PDF2 Cites 41 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Tests have shown that the above-mentioned double-sided wet ena
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0042] The main components of steel include: C: 0.05%, Si: 0.02%, Mn: 0.86%, P: 0.011%, S: 0.005%, Al: 0.039%, N: 0.004%, Ti: 0.05%, Nb: 0.030%, the balance being iron and unavoidable impurities.
[0043] The molten steel smelted according to the above ratio is subjected to vacuum degassing treatment before continuous casting, and the obtained continuous casting slab is heated at 1150°C, and then rolled in multiple passes within the austenite recrystallization temperature range, the total reduction rate is not low 50%, and then rolled into a steel plate in one or more passes within the temperature range of the austenite recrystallization zone or non-recrystallization zone, the total reduction rate is not less than 50%, and the final rolling temperature is 875°C. Then cool to the coiling temperature in two stages, the water cooling speed of the first stage is 90°C / s, the water cooling speed of the second stage is not less than 20°C / s, the overall average cooling rate is 22°C / s,...
Embodiment 2
[0046] The main components of steel include: C: 0.10%, Si: 0.04%, Mn: 0.80%, P: 0.035%, S: 0.032%, Al: 0.010%, N: 0.007%, Ti: 0.04%, Nb: 0.050%, the balance being iron and unavoidable impurities.
[0047] The implementation method is the same as in Example 1, wherein the cooling process is divided into three sections, and the thickness of the steel plate after rolling is 1.5 mm.
[0048] The metallographic structure of the steel plate of this embodiment is shown in Fig. 1(b).
Embodiment 3
[0050] The main components of steel include: C: 0.04%, Si: 0.06%, Mn: 0.85%, P: 0.011%, S: 0.035%, Al: 0.042%, N: 0.007%, Ti: 0.10%, Nb: 0.005%, the balance being iron and unavoidable impurities.
[0051] The implementation method is the same as in Example 1, wherein the thickness of the steel plate after rolling is 2.5 mm.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention provides a hot-rolled high-strength steel sheet for static enameling and a manufacturing method for the steel sheet. The main components by weight of the steel sheet are: C: 0.02-0.1%, Si<=0.1%, Mn: 0.2-1.5%, P: <=0.035%, S<=0.035%, Al: 0.01-0.1%, N: 0.001-0.01%, Ti: 0.01-0.1 %, Nb: 0.001-0.1%, and the remainder are iron and unavoidable foreign matters. The structure of the steel sheet comprises ferrite and pearlite, an the average particle diameter of the ferrite is not more than 11 micrometer. The manufacturing method of the steel sheet is, rolling twice the continuously cast or steel blanks after heating to 1100-1250 DEG C with total pressure-down amount <=50%, and final rolling temperature >=800 DEG C, then cooling section by section to coiling temperature 550-700 DEG C, and finally leveling the sheet. The hot-rolled high-strength steel sheet is applicable for pressure vessels such as bladders of water heaters, liquid-storing tanks and water buckets, etc. that are manufactured by static enameling process, is of high strength and good plasticity, high resistance to scaling bursting and air tightness.
Description
technical field [0001] The invention relates to a hot-rolled high-strength steel plate, in particular to a hot-rolled high-strength steel plate for electrostatic enamel and a manufacturing method thereof. Background technique [0002] The enamel liner of the water heater is usually made of hot-rolled high-strength steel plate. In order to improve the strength and scale resistance of the steel plate, the method of increasing the content of manganese and titanium in low-carbon steel is mainly adopted, and boron or rare earth elements are also added. Among them, manganese mainly plays a strengthening role, and the combination of titanium and carbon, nitrogen and sulfur to form a compound not only plays a strengthening role but also can improve the anti-scale explosion performance of steel, and the supplementary addition of boron or rare earth can also improve the anti-scale explosion performance. the goal of. At present, there are many related patents and patent applications. ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more