Internal stress measuring method of opening plate

A measuring method and technology for opening a flat plate, applied in the field of inspection, can solve the problems of high surface quality requirements, expensive equipment and slow measurement speed of the flat plate

Active Publication Date: 2011-08-17
SHOUGANG CORPORATION
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the methods for measuring the internal stress of the open plate include the blind hole method, X-ray and neutron ray diffraction technology, ultrasonic technology and magnetoelastic technology, all of which are advanced in

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
  • Internal stress measuring method of opening plate
  • Internal stress measuring method of opening plate
  • Internal stress measuring method of opening plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In the development of ship plate D36 in a 2250 hot rolling production line, in order to optimize the production process, the internal stress of the open plate of D36 ship plate with a length of 2000mm and a width of 2000mm was measured. Sample preparation parameters: n=10, L'=1800mm; material parameters: yield stress is 420Mpa, elastic modulus is 210000MPA, plastic modulus is 625Mpa.

[0037] Measurement results of the distance between the reference line and the measured line:

[0038]

[0039] Adopt mathematical model of the present invention to draw internal stress distribution calculation result as attached image 3 As shown, it provides reliable reference data for the optimization of ship plate production process.

Embodiment 2

[0041] In the production of ship plate D32 split plate, in order to optimize the process parameters of Kaiping line straightening machine, the internal stress of D32 ship plate split plate with a length of 2000mm and a width of 2000mm was measured. Sample preparation parameters: n=10, L'=1800mm; material parameters: yield stress is 340Mpa, elastic modulus is 210000MPA, plastic modulus is 750Mpa.

[0042] Measurement results of the distance between the reference line and the measured line:

[0043]

[0044] Adopt mathematical model of the present invention to draw internal stress distribution calculation result as attached Figure 4 As shown, it provides reliable reference data for the optimization of ship plate leveling process.

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
Yield stressaaaaaaaaaa
Elastic modulusaaaaaaaaaa
Yield stressaaaaaaaaaa
Login to view more

Abstract

The invention provides an internal stress measuring method of an opening plate, belonging to the technical field of measurement. An opening plate is evenly cut into strips via marking benchmark straight lines on the opening plate for releasing the internal stress; the bending deformation of the benchmark straight line, corresponding to each measuring strip, is measured; the internal stress before releasing the stress is calculated according to the bending deformation of each measuring strip, so that the internal stress distribution of the whole opening plate is obtained. Advantageously, under the precondition of satisfying the internal stress measurement precision of the opening plate, sample preparation and measurement can be performed by common workers with conventional cutting tools, ordinary rulers and tapered rulers; and the internal stress of the opening plate is obtained fast by a mathematical model built by the invention. The method of the invention is used in the works of the process optimization of hot-rolling ship plates and opening process optimization of chip plates, and respectively used for measuring the internal stresses of D36 and D32 levels of ship plate opening plates which are 2000 mm in length and 2000 mm in width, so that the internal stress distribution of the ship plate opening plate is obtained accurately, and reliable reference data is provided for the optimization of production process.

Description

technical field [0001] The invention belongs to the technical field of detection and provides a method for measuring the internal stress of an open plate, which is a simple and efficient technique for measuring the internal stress of an open plate, and is low-cost, fast and effective. Background technique [0002] With the rapid development of my country's national economy, the prosperity of the shipbuilding industry and the machinery manufacturing industry have driven the production of hot-rolled sheets and strips. Hot-rolled sheets and coils need to be straightened and cut into flat plates before they can be put into use. At present, the open plate has been widely used in various manufacturing industries such as ship plates, high-strength machinery plates, and automotive steel. The internal stress of the flat plate is one of the important indicators for evaluating the quality of the flat plate, and it has a great impact on the safety of stamping, welding and final product ...

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): G01L1/06
Inventor 王文广阳代军朱立新赵运堂方圆王松涛高圣勇李永林艾矫健
Owner SHOUGANG CORPORATION
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