Process lubricating system control method for wet leveling unit aiming at coarseness

A technology of process lubrication and roughness, applied in rolling mill control device, mass flow control device, metal rolling, etc., can solve the problems of easy out-of-tolerance, difficult control and sealing of finished strip surface roughness, etc., and achieve good economic benefits , the effect of good control effect

Active Publication Date: 2019-12-31
JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD +1
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a process lubrication system control method with the roughness as the target of the wet tempering unit, which can realize the quantitative analysis and control of the surface roughness of the finished strip steel in the double-stand wet-tempered rolling process, and solve the problem of double-machine The surface roughness of the finished strip steel is not easy to control during the wet skin-pass rolling process of the frame skin-passing unit, and it is easy to be out of tolerance and cause sealing problems

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
  • Process lubricating system control method for wet leveling unit aiming at coarseness
  • Process lubricating system control method for wet leveling unit aiming at coarseness
  • Process lubricating system control method for wet leveling unit aiming at coarseness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Taking a two-machine wet leveling unit as an example, according to figure 1 The process lubrication system control method with roughness as the target of the shown double-frame wet-leveling unit of the present invention:

[0034] First, enter step (a) process lubrication key parameter pre-setting, which includes the following steps (such as figure 2 shown):

[0035] a1) Preset and collect key parameters of process lubrication:

[0036] Preset the initial concentration of leveling liquid C 0 =1.5%, preset the initial temperature of leveling liquid t 0 =25℃, preset the total flow rate of leveling liquid W 0 =20L / min, preset leveling fluid distribution coefficient Set the surface roughness target value Ra s0 =0.700μm, collect the minimum elongation ε allowed by the mechanical properties min = 0.7% and maximum elongation ε max = 4%, the maximum leveling liquid flow W allowed by the leveling unit max =45L / min;

[0037] a2) Let the key parameters of process lubric...

Embodiment 2

[0056]Taking a two-machine wet-leveling unit as an example, first, enter step (a) pre-setting key parameters of process lubrication, which includes the following steps:

[0057] a1) Preset and collect key parameters of process lubrication:

[0058] Preset the initial concentration of leveling liquid C 0 =1.8%, preset the initial temperature of leveling liquid t 0 =28℃, preset the total flow rate of leveling liquid W 0 =20L / min, preset leveling fluid distribution coefficient Set the surface roughness target value Ra s0 =0.400μm, collect the minimum elongation ε allowed by the mechanical properties min = 0.7% and maximum elongation ε max = 4%, the maximum leveling liquid flow W allowed by the leveling unit max =45L / min;

[0059] a2) Let the key parameters of process lubrication be initialized to X y =X={1.8%, 28°C, 20L / min, 0.45};

[0060] a3) Given target roughness Ra ms =0.4μm, and allowable deviation G 0 =1×10 -5 ;

[0061] a4) Calculation of elongation ε of str...

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

PropertyMeasurementUnit
surface roughnessaaaaaaaaaa
surface roughnessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a process lubricating system control method for a wet leveling unit aiming at coarseness. The process lubricating system control method comprises the following steps executedby a computer: (a) pre-setting of process lubricating key parameters: including pre-setting and collecting process lubricating parameters, initializing the process lubricating parameters, giving target coarseness, calculating ductility of strip steel, calculating a coarseness calculated value set under the process lubricating parameter, and calculating a target function; and (b) online adjustmentof the process lubricating dynamic parameter: including measuring surface coarseness of the strip steel, giving a flow initial value of a leveling fluid, calculating ductility of the strip steel, calculating coarseness of a product panel after flow adjustment and coefficient distribution, calculating a target function, and outputting the most level fluid flow and the coefficient distribution adjustment amount. The process lubricating system control method achieves quantitative analysis an d control of the surface coarseness of the product strip steel in a double rack wet leveling rolling process, and reduces an overproof closing ratio of the surface coarseness of the product strip steel from 3% to within 0.1%, so that a good economical benefit is brought to the unit.

Description

technical field [0001] The invention relates to the technical field of cold rolling, in particular to a process lubrication system control method for a double-stand wet skin pass unit Background technique [0002] For the double-stand wet-temper rolling process, under the premise that the rolling process, rolling process, type of temper liquid, and the surface roughness, strength, and specifications of the strip to be tempered are determined, the final product strip Surface roughness depends on process lubrication system parameters such as leveling fluid concentration, flow rate and temperature. In the past, on-site research on the influence of the process lubrication system on the surface roughness of the finished strip steel of the double-stand wet skin pass unit was mainly done qualitatively, but quantitative analysis and closed-loop control could not be realized. In this way, how to realize the quantitative analysis and control of the surface roughness of the finished s...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00
CPCB21B37/00B21B2037/002
Inventor 钱承李国忠白振华
Owner JIANGSU JIUTIAN PHOTOELECTRIC TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap