Unlock instant, AI-driven research and patent intelligence for your innovation.
Method for calibrating roller-gap of slab casting machine
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 calibration method and roll gap technology are applied in the field of roll gap calibration of slab casting machines, which can solve the problems of slab quality and affecting the actual size of the roll gap.
Active Publication Date: 2019-03-08
SHOUGANG CORPORATION
View PDF11 Cites 6 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
[0003] Due to the different states of the slab caster being heated and stressed, it will directly affect the actual size of the roll gap. The deviation of the roll gap under stress will cause quality problems inside and on the surface of the slab
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
[0028] Such as figure 1 As shown, the calibration method of the slab caster roll gap of the present embodiment is characterized in that it comprises the following steps:
[0029] S01, measuring the roll gap of the upper and lower rolls to obtain the roll gap value a;
[0030] When measuring the roll gap value a for the first time, it is necessary to ensure the accuracy of the roll gap value a. At this time, the slab caster should be in an offline state, and the upper and lower rolls are neither stressed nor heated. Various tools can be used to measure the roll gap. In this embodiment, a hand-held roll gap meter can be used to measure the roll gap value a conveniently and quickly.
[0031] S02. Apply force to the upper and lower rolls, measure the roll gap of the upper and lower rolls, obtain the roll gap value e, and calculate the deviation value b between e and a;
[0032] After the actual roll gap value is measured, pressure should be applied to the upper and lower rolls, ...
Embodiment 2
[0045] As another embodiment of this specification, in this example, the maximum section of the steel plate cast by the slab caster is 230×1600 mm, and after measuring the actual roll gap value of 230 mm, a load simulator is used to support the upper and lower sections of the segment Roll, apply a force of 45000N to the upper and lower rolls, and then use a hand-held roll gap meter to measure the roll gap e, and calculate the deviation between e and a to be 0.3mm; after removing the force on the upper and lower rolls, use a load simulator A force of 40,000N is also applied to the sector frame, and after the roll gap value f is measured with a hand-held roll gap meter, the calculated deviation between f and a is 0.2mm.
[0046] After a casting is completed, set 1 hour as a time node. It takes 20 hours from the completion of casting to complete cooling. The start time of the next casting is 2 hours from the end of the previous one. At this time, the deviation value d is a fixed v...
Embodiment 3
[0049] As another embodiment of this specification, in this example, the maximum section of the steel plate cast by the slab caster is 230×1600 mm, and after measuring the actual roll gap value of 230 mm, a load simulator is used to support the upper and lower sections of the segment Roll, apply a force of 45000N to the upper and lower rollers, and then use a hand-held roll gap meter to measure the roll gap e, and calculate the deviation between e and a to be 0.2mm; after removing the force on the upper and lower rollers, use a load simulator A force of 40,000N is also applied to the sector frame, and after the roll gap value f is measured by a hand-held roll gap meter, the calculated deviation between f and a is 0.3mm.
[0050] After one casting is completed, set 1 hour as a time node. It takes 20 hours from the completion of casting to complete cooling. The start time of the next casting is 22 hours from the end of the previous one. At this time, the linear equation between t...
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 method for calibrating a roller-gap of a slab castingmachine, and belongs to the field of continuous cast steel in the metallurgical industry. The method for calibrating theroller-gap of the slab castingmachine comprises the following steps that the roll gap of upper and lower rolls is measured to obtain a roll-gap value a; force is applied to the upper and lower rollers, and a deviation value b between the roller-gap value of the upper and lower rollers and a is measured; the force is removed from the upper and lower rollers, force is applied to a sector frame, anda deviation value c between the roller-gap value of the upper and lower rollers and a is measured; one-time casting is carried out, the time from the end of casting to complete cooling is divided into a plurality of nodes, and a deviation value d between the roller-gap value of the upper and lower rollers of one of the nodes and a is measured; and calculation is carried out to obtain a roller-gapvalue h for next casting, wherein h=a+b+c+d. Due to the force applied to the upper and lower rollers and the sector frame, the deviation of the upper and lower rollers and the sector frame in the production process is simulated, and the deviation values generated by the slab casting machine under different heating conditions are obtained. A roller-gap value in the production state can be obtainedfrom the sum of the three deviation values and the roller-gap value in the unstressed heated state, so that the internal quality of a casting blank is ensured.
Description
technical field [0001] The invention belongs to the field of continuous steel casting in the metallurgical industry, and in particular relates to a calibration method for roll gaps of slab casters. Background technique [0002] During the slab continuous casting production process, the slab caster is in a state of heat and stress, but the current roll gap calibration method of the caster does not fully consider the problem of force and heat in the actual production process of the caster, but in the slab casting When the machine is offline and not in production, the roll gap of the slab caster is calibrated. [0003] Due to the different states of the slab caster being heated and stressed, it will directly affect the actual size of the roll gap. The roll gap deviation generated under the stress will cause quality problems inside and on the surface of the slab. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the...
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