A kind of tension control method for fair drawing and straightening of deep-drawn galvanized steel sheet
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 galvanized steel sheet and tension control technology, applied in tension/pressure control and other directions, can solve problems such as increasing the production difficulty of deep-drawing galvanized products, reducing the profit margin and poor surface quality of deep-drawing galvanizing products, and achieving the reduction of The effect of performance revision rate, reduction of production difficulty, and good physical properties
Active Publication Date: 2016-06-01
HEBEI IRON AND STEEL
View PDF7 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
The elongation of skin-pass stretching and straightening has a great influence on the performance of deep-drawing galvanized products. In order to obtain good performance indicators, the elongation must be limited, but low elongation will generally result in poor surface quality of products, and to obtain good The surface quality must use a large skin elongation, but if the elongation is too large, the performance will deteriorate and cannot meet the needs of users. This contradictory situation greatly increases the difficulty of production of deep-drawing galvanized products. The problem also greatly reduces the profit margin of deep-drawing grade galvanized products
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
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0022] Example 1: DC53D+Z, a deep-drawing galvanized product, was produced by the U.S. Steel Union galvanizing process.
[0025] The specification of the strip is 1.0×1250mm, and the running speed of the steel is 80m / min;
[0026] The tension value before smoothing is 27KN;
[0027] The tension value after finishing and straightening is 29KN;
[0028] The elongation of the fair-stretching straightening is 0.78%;
[0029] Other parameters are the same as those of ordinary galvanized products.
[0030] The actual performance of the product is yield strength: 160MPa; tensile strength: 293MPa, A80: 45.5%.
Embodiment 2
[0031] Example 2: Improved Sendzimir galvanizing process to produce deep-drawing galvanized product DC53D+Z.
[0032] The roll number of the product is 2Y19028N1;
[0033] Chemical composition Chemical composition: C: 0.04%, Si: 0.014%, Mn: 0.12%, P: 0.014%, S: 0.01%, ALs: 0.038%, Ti: 0.06%;
[0034] The specification of the strip is 0.7×1250mm, and the running speed of the strip is 83m / min;
[0035] The tension value before smoothing is 22KN;
[0036] The tension value after finishing and straightening is 24KN;
[0037] The elongation of skin-passing straightening is 0.82%;
[0038] Other parameters are the same as those of ordinary galvanized products.
[0039] The actual performance of the product is yield strength: 165MPa; tensile strength: 308MPa, A80: 44.5%.
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
yield strength
aaaaa
aaaaa
tensile strength
aaaaa
aaaaa
yield strength
aaaaa
aaaaa
Login to view more
Abstract
The invention belongs to the technical field of galvanized steel sheet production methods, and relates to a finishing withdrawing-straightening tension control method for a deep-draw galvanized steel sheet for guaranteeing the steel sheet performance and the surface quality. According to the technical scheme, the tension set values before and after the finishing withdrawing-straightening are adjusted, and the matching relation between steel plates with different thicknesses and the tension before and after the finishing withdrawing-straightening is adopted, wherein the tension before finishing conforms to the formula: T(strip steel thickness)*(25-30)KN, and the tension after finishing and withdrawing-straightening conforms to the formula: T(strip steel thickness)*(27.5-33)KN. According to the finishing withdrawing-straightening tension control method, the surface quality of the deep-draw galvanized product can be guaranteed, the performance is not greatly affected, the requirement for machining and using performance of a user is met, and the performance aggravating effect brought by increasing the finishing rolling force to guarantee the surface of the deep-draw galvanized product is avoided. The performance judgment amending ratio of the deep-draw galvanized product is greatly reduced, the surface quality and the profit space of the deep-draw galvanized product are greatly improved, the competitiveness of enterprises is enhanced, and considerable economic benefits are brought to the enterprises.
Description
technical field [0001] The invention relates to a steel plate production process, in particular to a method for controlling the smoothing and straightening tension in order to ensure performance and surface quality during the production of deep-drawing galvanized products on a continuous galvanizing production line, belonging to the production of galvanized steel plates. Method technical field. Background technique [0002] Due to its good stamping performance, deep-drawing galvanized products are generally used for deep-drawing parts with a certain stamping depth and a certain stamping depth, such as automobile outer panels, home appliance outer panels and other industries. At present, the good stamping performance of deep-drawing galvanized products is mainly achieved by reducing the carbon content in the raw materials, adding a certain amount of alloying elements such as Ni, Ti, etc., and through high-temperature annealing and other means to achieve good performance indic...
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