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Method for measuring micron-order depths of pits of component

A technology for measuring components and microns, which is applied in the direction of measuring devices, instruments, and optical devices, etc. It can solve the problems of slow detection speed, inconvenient operation, and high cost, improve accuracy and traceability, and solve blind areas that cannot be measured , the effect of no hidden danger of damage

Active Publication Date: 2015-03-11
CHONGQING MATERIALS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mechanical instruments and stylus instruments for measuring tiny depth dimensions, but these instruments and equipment need to be purchased separately, which increases the cost, complex structure, inconvenient operation, slow detection speed, and low measurement accuracy of existing measuring instruments

Method used

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  • Method for measuring micron-order depths of pits of component
  • Method for measuring micron-order depths of pits of component

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Experimental program
Comparison scheme
Effect test

specific Embodiment 2

[0036] The characteristics of this embodiment are: according to step 1 and step 2, the depth of part of the concave notch on the standard depth sample block and the corresponding focusing scale difference J 2 -J 1， Step 3. Count the depth of each concave notch on some standard depth samples and the corresponding focusing scale difference J 2 -J 1 , made into the standard depth block scale as shown in Table 2;

[0037] Refer to Table 2 for the scale of standard depth samples

[0038] Focus scale difference / mm 2 3 5 8 Depth / μm 5 8 12 20

[0039] In step 4, the pit reference plane of the part to be tested is placed on the metallographic microscope 1, and by adjusting the focus knob 2 of the metallographic microscope 1, when the arc outline of the pit reference plane is clear, record the focus knob Focus scale J 1 , and then adjust the focus knob 2 of the metallographic microscope 1 again, when the bottom contour of the pit is as clear as the ar...

specific Embodiment 3

[0040] The characteristics of this embodiment are: the focusing scale J of the focusing knob 2 1 、J 2 Using manual input into the computer, the metallographic microscope 1 measures the horizontal distance h of the concave notch through its own ruler, and manually inputs it into the computer 3 for storage. Other features are the same as those of the specific embodiment 1 and the specific embodiment 2.

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Abstract

The invention discloses a method for measuring micron-order depths of pits of a component. The method comprises the following steps: firstly, manufacturing a standard depth sample block with a plurality of pits with different micron-order depths; secondly, measuring the depths of the pits by using a microscope, and recording focusing scale differences J2-J1 corresponding to a focusing knob of the microscope to make a standard depth sample block scale reference table: by amplifying the microscope multiple, measuring the horizontal distances h of planes, namely depths of reference planes of the pits, measuring till arc contours of the pits are clear in the reference planes and recording focusing scales J1, measuring again till bottom contours and the arc contours of the pits are equally clear and recording focusing scales J2, and obtaining the focusing scale differences J2-J1; finally, by comparing with the standard depth sample block scale reference table, finding out the depths of the pits of the component to be measured. The method is easy to operate; by the method, various tiny depths can be measured to a micron-order precision and the accuracy and the traceability of data are improved.

Description

technical field [0001] The invention relates to a measuring method, in particular to a tiny depth measuring method, which is especially suitable for corrosion test and morphology research. Background technique [0002] With the rapid development of science and technology and the continuous deepening of scientific experiments and research, the assembly accuracy of equipment components is getting higher and higher. Due to corrosion pits or cracks in the metal parts of equipment during processing or storage, the corrosion pits or Cracks will affect the assembly accuracy, so it is necessary to study the surface morphology of metal parts in corrosion tests, and to detect the depth of tiny corrosion pits and tiny cracks. At present, there are mechanical instruments and stylus instruments for measuring micro-depth dimensions, but these instruments and equipment need to be purchased separately, which increases the cost, complex equipment structure, inconvenient operation, slow detec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/22
Inventor 王春光万红尤艳飞赵安中刘海定王明波刘微
Owner CHONGQING MATERIALS RES INST
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