Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Test method and test system for determining active remanufacturing time of roller

A test method and test system technology, which is applied in the field of test systems for determining the timing of active remanufacturing of rolls, can solve problems such as the difficulty in accurately simulating the evolution process of roll coupling damage and the inability to determine the timing of active remanufacturing

Pending Publication Date: 2020-10-20
HEFEI UNIV OF TECH
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the technical problem that the existing test method is difficult to accurately simulate the coupling damage evolution process in the actual working process of the roll, and cannot determine the timing of active remanufacturing, the present invention provides a test method and test system for determining the timing of active remanufacturing of rolls

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
  • Test method and test system for determining active remanufacturing time of roller
  • Test method and test system for determining active remanufacturing time of roller
  • Test method and test system for determining active remanufacturing time of roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] see Figure 1-4 , this embodiment provides a test method for determining the timing of roll active remanufacturing, the method is used to test the loading roll 4 and the test piece 5 arranged in parallel to the central axis. In this embodiment, through theoretical calculation, on-site data collection, test measurement and finite element simulation, the equivalent loads such as contact load, thermal load and friction force on the rolls in the strip rolling production are applied to the equivalent load through the test bench. The test simulation is carried out on the specimen to realize the simulation of roll wear damage, contact fatigue damage, thermal fatigue damage and the coupling damage of the three. Among them, the loading roll 4 and the test piece 5 are cylindrical, and the test object of this test method is a pair of rolls. The device heats the loading roll 4 in the heating zone. The heating temperature is the same as that of the plate in rolling production. The l...

Embodiment 2

[0111] This embodiment provides a test method for determining the timing of active remanufacturing of rolls. The method is specifically exemplified on the basis of Embodiment 1. Please refer to Table 1 for specific parameters.

[0112] Table 1 Rolling parameter table in production

[0113]

[0114] In step 2, according to the Hertz formula and fatigue damage theory, when the loading roller 4 has a diameter of 60mm and a width of 15mm, and the specimen 5 has a diameter of 30mm and a width of 20mm, when the pressure load is loaded to 6000N, the loading roller 4 and the specimen The maximum contact pressure between 5 is about 1000MPa, so an equivalent pressure of 6000N needs to be applied.

[0115] In step three, according to the contact arc length between the rolling piece and the roll during the roll rolling process, determine the rotational speed difference required to simulate the real wear and damage of the paired rolls, generally in the range of 0.2%-0.5%.

[0116] In s...

Embodiment 3

[0120] This embodiment provides a test method for determining the timing of active remanufacturing of rolls, which is similar to the method in Example 1, the difference is that the calculation formulas for the timing of active remanufacturing of rolls are different, and multiple calculations are provided in this embodiment formula.

[0121] One of the formulas for calculating the timing of active remanufacturing of rolls is:

[0122]

[0123] In the formula, α, β, χ, δ are the determination coefficients of contact fatigue damage limit, wear damage limit, thermal fatigue damage limit and coupling damage limit respectively, which are determined according to actual needs.

[0124] Another formula for calculating the timing of active remanufacturing of rolls is:

[0125]

[0126] In the formula, T 0 It is the initial value of remanufacturing timing.

[0127] Another formula for calculating the timing of active remanufacturing of rolls is:

[0128]

[0129] In the form...

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

No PUM Login to View More

Abstract

The invention discloses a test method and a test system for determining active remanufacturing time of a roller. The test method comprises the following steps of: calculating an equivalent pressure load and an equivalent slip ratio required to be applied for simulating real abrasion and contact fatigue damage, and inputting parameters of the equivalent pressure load and the equivalent slip ratio to carry out a contact fatigue and abrasion simulation test so as to obtain a contact fatigue damage limit and a abrasion damage limit; constructing a heat transfer model of a rolling production process, determining equivalent input heat and cooling liquid injection flow according to a calculated value of the heat transfer model, and inputting values of the equivalent input heat and the cooling liquid injection flow to perform a thermal fatigue simulation test so as to obtain a thermal fatigue damage limit; performing a contact fatigue, abrasion and thermal fatigue coupling damage simulation test in combination with the parameters of the two tests to obtain a coupling damage limit; and determining the active remanufacturing time of the roller. The test method and the test system can realizecoupling evolution simulation of abrasion, contact fatigue, thermal fatigue and other damage, and determine the active remanufacturing time of the roller based on the simulation result.

Description

technical field [0001] The invention relates to a test method in the technical field of roll testing, in particular to a test method for determining the timing of active remanufacturing of rolls, and to a test system of the device for determining the timing of active remanufacturing of rolls. Background technique [0002] The roll is the main working part and tool for the continuous plastic deformation of the metal on the rolling mill. The decommissioned large metallurgical roll has the characteristics of good remanufacturability and high remanufacturing value, which has attracted extensive attention from domestic and foreign scientific research institutions and large metallurgical equipment manufacturing enterprises. . However, the working state of the rolls is complex and the failure forms are various. It is difficult to judge whether the decommissioned rolls can be remanufactured before remanufacturing. There are differences in the failure time and failure state of the wa...

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
IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14Y02P90/30
Inventor 宋守许蔚辰汪志全郁迥
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com