A kind of normalizing dh36 steel plate for wind power and preparation method thereof
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 DH36, steel plate technology, applied in the field of iron and steel metallurgy, can solve the problems of low pass rate of thick wind power steel plates, no relevant patents and reports retrieved, poor performance uniformity and stability, etc., to achieve low comprehensive production costs and improve internal Quality, Guaranteed Purity and Effects of Cleanliness
Active Publication Date: 2021-05-04
ZHANGJIAGANG HONGCHANG STEEL PLATE CO LTD +1
View PDF3 Cites 0 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
Steel plates have high requirements for strength and toughness. The pass rate of thick-gauge wind power steel plates manufactured by existing methods is not high, and the performance uniformity and stability are also poor, making comprehensive production difficult.
[0004] No relevant patents and reports specifically for this type of steel for wind power have been retrieved so far
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
[0023] The process route is as follows: Weigh the components as required to obtain molten iron, KR desulfurization of molten iron, converter smelting, LF refining, RH vacuum treatment, slab continuous casting, slab reheating, rough rolling, intermediate slab cooling, finish rolling , Rapid cooling of steel plate, off-line stack cooling, ultrasonic flaw detection, shot blasting, normalizing, accelerated cooling of steel plate. The control parameters of the smelting furnace and rolling process of this embodiment are shown in Table 1, the smelting composition of the smelting furnace is shown in Table 2, the control parameters of the heat treatment process are shown in Table 3, and the mechanical properties of the steel plate after heat treatment are shown in Table 4.
[0024] Table 1 Example smelting furnaces and rolling process control parameters
[0025]
[0026] Table 2 Example smelting furnace smelting composition
[0027] C％ Si% Mn% P％ S％ Nb% Ti% Al...
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
Property
Measurement
Unit
thickness
aaaaa
aaaaa
yield strength
aaaaa
aaaaa
tensile strength
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a normalizing DH36 steel plate for wind power and a preparation method thereof. Weigh each component as required to get molten iron, molten iron KR mechanical stirring desulfurization, converter oxygen blowing smelting, LF refining, RH vacuum treatment, wire feeding, soft stirring, slab continuous casting, slab reheating, rough rolling, intermediate slab Waiting for warm cooling, finishing rolling, accelerated cooling, off-line stack cooling, ultrasonic flaw detection, shot blasting, normalizing, accelerated cooling of steel plates, fire cutting, storage. In the slab reheating stage, the heating temperature is controlled at 1150-1250°C, and the time in the furnace is not less than 1.0min / mm; the rough rolling temperature is controlled at 1000-1100°C, and the final rolling temperature is 860-900°C; the normalizing temperature of the steel plate is 880 ~900°C, the normalizing time in the furnace is not less than 2.0min / mm, and the cooling temperature after normalizing is 540‑600°C. The steel plate of the invention has good performance, low production cost, thick applicable thickness and good application prospect.
Description
technical field [0001] The invention relates to the field of iron and steel metallurgy, in particular to a normalizing DH36 steel plate for wind power and a preparation method thereof. Background technique [0002] With the rapid growth of economic development in demand for electricity and the requirements of sustainable green manufacturing, offshore wind power projects are increasing and the power of generator sets is increasing. The demand for steel plates for wind power is increasing and the thickness of steel plates is increasing. Technical requirements have also been tightened. In the past, Shagang produced more steel plates with a thickness of less than 60mm, and fewer steel plates with a thickness of 60-100mm. Moreover, alloy elements such as Ni, Cu, and V were added to steel plates with similar thick specifications, and the alloy content and carbon equivalent Ceq were higher. The high cost is not conducive to the market promotion and application of Shagang's wind po...
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