Method for setting in-furnace tension of continuous annealing unit on line
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 tension setting and setting method, which is applied in the direction of furnace, furnace type, heat treatment furnace, etc., can solve the problems of no consideration of influence, difference, and large difference, so as to improve stability, maximize economic benefits, and reduce running Partial effect
Active Publication Date: 2011-04-06
SHOUGANG CORPORATION
View PDF3 Cites 24 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
The tension setting only depends on the steel type and specification, without considering the influence of incoming factors on the tension setting
In fact, even for strips of the same steel type and specification, the actual shape of different steel coils is different, and the difference is often very large, and there is even a transition from large side waves to large and medium waves. Using the same tension setting value is obviously unfavorable to the stability of the plate
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
[0040] In order to illustrate the basic idea of the present invention, now take a certain 1850 continuous annealing unit as an example, with the help of figure 2 To describe the online tension setting process of mild steel on a specific continuous annealing unit.
[0041] First, in step 1, the influence coefficient ξ of the equipment structure characteristics of the continuous annealing furnace is collected j (j=1, 2, L, 7), continuous annealing furnace segmental influence coefficient α i , β 1i , β 2i , β 3i (i=1, 2, L, 11), the furnace roller diameter D of each section of the continuous annealing furnace i (i=1, 2, L, 11), as shown in Table 1 and Table 2:
[0042] Table 1 Influence coefficient of furnace structure characteristics of 1850 continuous annealing unit
[0043] project
ξ 1
ξ 2
ξ 3
ξ 4
ξ 5
ξ 6
ξ 7
value
0.6082
-4.4339
12.44
-16.792
2.0589
-8.353...
Embodiment 2
[0074] In order to further illustrate the basic idea of the present invention, a certain 1850 continuous annealing unit is now taken as an example, with the help of figure 2 To describe the online tension setting process of hard steel on a specific continuous annealing unit.
[0075] First, in step 1, the influence coefficient ξ of the equipment structure characteristics of the continuous annealing furnace is collected j (j=1, 2, L, 7), continuous annealing furnace segmental influence coefficient α i , β 1i , β 2i , β 3i (i=1, 2, L, 11), the furnace roller diameter D of each section of the continuous annealing furnace i (i=1, 2, L, 11), as shown in Table 1 and Table 2:
[0076] Table 1 Influence coefficient of furnace structure characteristics of 1850 continuous annealing unit
[0077] project
ξ 1
ξ 2
ξ 3
ξ 4
ξ 5
ξ 6
ξ 7
value
0.6082
-4.4339
12.44
-16.792
2.0589
-8.3535
15.52...
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 relates to a method for setting the in-furnace tension of a continuous annealing unit on line. The method comprises the following steps of: collecting the equipment structural characteristic influence coefficient and the sectional influence coefficient of a continuous annealing furnace and the furnace roller diameter of each section of the continuous annealing furnace; calculating a model coefficient in consideration of the influences of deviation, buckling and plate shape; calculating a preset value of the in-furnace tension of the continuous annealing unit; and putting the set value Tactmi of the in-furnace tension of the continuous annealing unit into the operation of the unit so as to finish the steps of setting the tension on line and the like. The method mainly has the advantages that: (1) by adopting a tension optimization model, the type and the specification of steel and the influence of the plate shape of an actually-supplied material are considered, namely one more dimension is considered; (2) actual equipment characteristics and an annealing process regulation can be completely combined by the tension model; and (3) in consideration of the problem of the comprehensive treatment of thermal buckling and deviation, the tension model is more flexible and more practical than a fixed table, and the model is simple and can be applied on line.
Description
technical field [0001] The invention relates to a continuous annealing production technology, in particular to an online tension setting method in a furnace of a continuous annealing unit. Background technique [0002] Annealing plays an important role in the production of cold-rolled strip steel, but initially cold-rolled strips mainly used intermittent bell annealing. Since the 1980s, due to the adoption of technologies such as rapid heating, high-temperature annealing, rapid cooling, and overaging treatment, the four processes of cleaning, annealing, smoothing, and finishing can be combined into one, at a lower cost. Products with good flatness, uniform performance and high surface cleanliness can be produced under the condition of continuous annealing, and continuous annealing has gradually developed. At present, more than a dozen countries in the world have continuous withdrawal lines, including 19 in Japan and 10 in South Korea. attached figure 1 It is a schematic d...
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