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Method for rapidly measuring thickness value a of weld bead

A technology for fast measurement of weld bead thickness, applied to measuring devices, instruments, etc., can solve problems such as difficulties

Inactive Publication Date: 2020-11-13
CHINA COAL BEIJING COAL MINING MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the z value can be easily measured on the way, but how to select the location of the a value and how to confirm the a value have become difficult

Method used

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  • Method for rapidly measuring thickness value a of weld bead
  • Method for rapidly measuring thickness value a of weld bead
  • Method for rapidly measuring thickness value a of weld bead

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specific Embodiment approach

[0014] The method for fast measuring weld bead thickness a value of the present invention, its preferred embodiment is:

[0015] The root of the weld bead is used as the starting point to draw concentric circles. When the radius of the concentric circle increases to intersect with the nearest intersection point of the outer contour construction line of the weld, the radius of the concentric circle is the value a of the thickness of the weld bead.

[0016] The line connecting the center of the concentric circles to the intersection point is the theoretical weld fracture position of the weld bead, and is also the measurement position of the weld bead thickness a value.

[0017] The weld bead is symmetrical, asymmetrical or irregular.

[0018] The method for quickly measuring the a value of the weld bead thickness of the present invention adopts the concentric circle method to measure the a value of various forms of weld bead, and can quickly, accurately and conveniently determin...

specific Embodiment

[0020] Such as Figure 3a , Figure 3b , Figure 3c As shown, according to the failure theory of weld fracture, concentric circles are drawn starting from the root of the weld bead, and terminate when the radius of the concentric circle increases to intersect with the nearest intersection point of the outer contour construction line of the weld. The radius of the concentric circle is the thickness a value of the weld bead, and the line from the center of the circle to the intersection point is the theoretical weld fracture position.

[0021] attached Figure 3a , Figure 3b , Figure 3c Two cases are given respectively in the above. In the case of the same z value, due to the occurrence of asymmetry or irregularity, it is difficult to truly reflect the actual value of a by using mathematical calculation methods. However, by adopting the concentric circle method provided by the present application, the position and size of the a value can be determined quickly and accurate...

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Abstract

The invention discloses a method for quickly measuring the thickness value a of a weld bead, which comprises the following steps of: drawing a concentric circle by taking the root of a weld bead as astarting point, and terminating the drawing when the radius of the concentric circle is increased to intersect with the nearest intersection point of a weld joint outer contour construction line, wherein the radius of the concentric circle is the thickness value a of the weld bead. The connecting line from the circle center of the concentric circle to the intersection point is the theoretical weldjoint fracture position of the weld bead and is also the measurement position of the thickness a value of the weld bead. A concentric circle method is adopted to determine the values a of the weld beads of various forms, the positions and sizes of the values a can be rapidly, accurately and conveniently determined, whether weld bead forming is symmetrical or not and whether weld bead forming is regular or not do not affect determination of the value a.

Description

technical field [0001] The invention relates to a technique for measuring the thickness of a weld bead, in particular to a method for quickly measuring the a value of the weld bead thickness. Background technique [0002] In the welded structure, the weld plays a key connection role, and the load that a section of the weld can bear is proportional to the length of the weld and the thickness of the weld bead (a value), and according to the welding theory, the position of the a value is the weld Therefore, it is particularly important to determine the size and position of the a value. Length dimensions are generally more intuitive and easy to measure. As for the measurement of weld bead size, according to the relevant international standards for welding, two marking forms are allowed, namely, the z-value marking of the weld angle height or the a-value marking of the weld bead thickness. Different forms have certain conversion relations. However, in actual industrial applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/08
CPCG01B21/08
Inventor 王震刘超
Owner CHINA COAL BEIJING COAL MINING MACHINERY
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