Method for making longitudinal cracks in simulated test block welding seams

A technology of longitudinal crack and welding method, applied in the field of simulated test block, can solve the problems of difficult welding, limited, low success rate, etc., and achieve the effect of simple and practical operation method, wide application range and easy to master.

Active Publication Date: 2015-06-24
田国良
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These three methods have disadvantages, namely: the first method is prone to other defects during welding, welding is difficult, requires a large welding space, and is limited by the thickness of the workpiece; the cracks produced by the second method are not It has the characteristics of cracks, and it can be seen that other met

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 Construction

[0012] Example Description:

[0013] Embodiment is the method for making longitudinal cracks in T=22mm thick butt weld simulation test block,

[0014] The method of making longitudinal cracks in the weld of the simulated test block is composed of prefabricated welding 1, mechanical processing 2, mechanical method fracture 3, mechanical processing method repair 4, team requirements 5 and team part welding method selection 6 six processes Finish.

[0015] The prefabricated welding 1 is to weld the position of the prefabricated longitudinal crack by the method required by the welding process. In this embodiment, manual arc welding is used to weld the part 100mm-130mm away from the starting end of the simulated test block and 6mm-10mm deep from the surface A of the simulated test block. Errors should be considered during welding. The actual welding range is: 98mm-133mm in the length direction and 5mm-13mm in the depth direction. No defects shall arise within this scope.

[001...

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 method for making longitudinal cracks in simulated test block welding seams. The method comprises the following steps: prefabricating and welding, machining, cracking by adopting a mechanical method, trimming by adopting a mechanical processing method, teaming and selecting a teaming part welding method. Compared with an existing method for making longitudinal cracks in a simulated test block, the method disclosed by the invention has the advantages that additives are not added, and a metal material of the welding seams is adopted. The operation method is simple and practical, easy to grasp, and wide in scope of application. The made cracks are high in success rate and low in cost. The made cracks have topographic characteristics which are almost the same as those of true cracks, and are even consistent with those of true cracks, so that the characteristics of the true cracks can be reflected. The dimensions, namely height, length and generated positions, of the cracks are easy to control, the precision is high and the dimensions of the generated cracks easily meet requirements within an error range. The method disclosed by the invention is suitable for being applied as a simulated test block crack processing method for non-destructive testing of test pieces.

Description

technical field [0001] The invention relates to a simulated test block in the non-destructive testing technology, in particular to a method for making longitudinal cracks in the weld seam of the simulated test block. Background technique [0002] Pressure equipment is closely related to national economic production and people's daily life. However, pressure-bearing equipment often has the characteristics of high temperature, high pressure and toxic media. Once an accident occurs, the consequences will be extremely serious. In order to avoid possible quality accidents, a large number of non-destructive testing technologies are used in the manufacturing, use, and inspection of pressure equipment. According to statistics, in 2005 there were 274 serious accidents of pressure equipment, of which 48 were caused by the quality of the equipment itself, accounting for 20% of the number of accidents, and 38 were caused by equipment defects that were not found in time, accounting for ...

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): G01N1/28
Inventor 田国良
Owner 田国良
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