CN104913746A - Measuring method of metallurgically-bonded thermometal composite pipe wall thickness - Google Patents
Measuring method of metallurgically-bonded thermometal composite pipe wall thickness Download PDFInfo
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- CN104913746A CN104913746A CN201510301891.9A CN201510301891A CN104913746A CN 104913746 A CN104913746 A CN 104913746A CN 201510301891 A CN201510301891 A CN 201510301891A CN 104913746 A CN104913746 A CN 104913746A
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- thickness
- composite bimetal
- bimetal pipe
- measuring method
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
Abstract
The invention discloses a measuring method of metallurgically-bonded thermometal composite pipe wall thickness. The method includes the following steps that: the surface of a thermometal composite pipe is treated; an ultrasonic thickness gauge, a single-crystal probe, a double-crystal probe and a coupling agent are selected; a standard sample is produced: a contrast sample block is selected, and plane sample blocks are manufactured, and a pipe ring sample is manufactured; equipment is verified and checked at the beginning and the middle stage of detection, so that regeneration sensitivity can be kept; and proper probes are selected according to the material and thickness of the detected thermometal composite pipe, and corresponding sample blocks are utilized to test sound velocity, and the single-crystal probe frames initial waves, alloy layer interface waves and bottom waves through utilizing double gates, so as to measure the thickness of an inner layer, and the double-crystal probe measures the thickness of the inner layer through adopting a single gate. The measuring method of the invention has the advantages of high accuracy of measured data, small error and simple operation. With the measuring method adopted, human-made errors caused by manual caliper measurement can be avoided, efficiency can be greatly improved, and the accuracy of data can be improved.
Description
Technical field
The present invention relates to weldless steel tube manufacturing technology field, specifically a kind of measuring method of metallurgical binding composite bimetal pipe wall thickness.
Background technology
Bimetallic seamless steel pipe refers to that a performance is combined with each other according to particular/special requirement with the different steel grade of value, to meet the high added value tube product of specific use.In some specific industry, due to needs difference, the metal ingredient of steel pipe ectonexine can be different.As anchor pole industry, due to outer layer metal Long contact time water, need to use corrosion resistant stainless steel, and inner layer metal can be plain carbon steel.For another example transportation pipe inner layer metal requires high, needs to use anticorrosive, and does not have particular/special requirement to outer layer metal.Can reasonably combined according to different application environmental selection ectonexine metal, can reduce costs again while saving precious metal.Since bimetallic seamless steel pipe in 1991 comes into operation, through the development of more than ten years, be widely used.
But existing market does not have the wall thickness measurement method of ripe metallurgical binding composite bimetal pipe, can only the methods such as slide calliper rule be adopted to carry out wall-thickness measurement at pipe end, helpless for the non-end face area wall thickness of pipe, and metallurgical binding weldless steel tube is usually in use according to the actual service condition in scene, cut at the different parts of pipe, weld, and this position wall unevenness, can directly have influence on follow-up weld job etc., therefore, the invention solves the wall thickness measuring problem of homogeneous tube, improve production, operating efficiency.
Summary of the invention
The object of the present invention is to provide a kind of measuring method of metallurgical binding composite bimetal pipe wall thickness, the data accuracy that the method is measured is better, and error is little, avoids the personal error that artificial kind of calliper brings, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A measuring method for metallurgical binding composite bimetal pipe wall thickness, comprises the following steps:
1) process on composite bimetal pipe surface: composite bimetal pipe surface is processed, composite bimetal pipe smooth surface, cleaning, without scale, zero defect, end impulse-free robustness, and have good flatness; Avoid impact flaw detection accuracy.
2) instrument, probe selected: instrument is the audiogage of pulse echo formula, and operating frequency range is 2 ~ 15MHz, and has the gain knob of stepping 2.0dB or below 2.0dB; Choose that horizontal linearity error is not more than 1%, vertical linearity error be not more than 5%, single crystal probe, the double crystal probe of frequency to be 2-15MHz diameter be 5-10mm;
3) couplant is selected: adopt sound translative performance good, and the couplant on not damage check surface;
4) making of standard specimen: first choose and tested composite bimetal pipe specification, material, contrast sample block that Technology for Heating Processing is identical with surface appearance, secondly according to composite bimetal pipe ectonexine two kinds of metal materials, makes the plane sample block being used for caliper velocity respectively; Again make the pipe ring sample of a long 200mm, one end car of this pipe ring sample falls outer layer metal, and other end car falls inner layer metal, and car goes length to be 50mm, and thickness and precision is at ± 0.1mm;
5) UC: in detection beginning and centre, verification is carried out to equipment and check to keep regenerating sensitivity, two the plane sample blocks made are utilized to carry out the measurement of two kinds of metal velocities of sound, utilize the pipe ring sample made to carry out the verification of audiogage, detect with slide calliper rule and be less than 0.1mm with audiogage testing result compare error;
6) mensuration of composite bimetal pipe individual layer wall thickness: according to material and the thickness of tested composite bimetal pipe, selects to adapt to probe, uses the corresponding sample block check velocity of sound; Single crystal probe uses double-gate doorframe firmly to begin ripple, alloy-layer boundary wave, end ripple, measures internal layer thickness; Double crystal probe uses homostrobe, detects the velocity of sound that internal layer uses its correspondence, records its thickness.
As the further scheme of the present invention: in described step 3), couplant comprises machine oil, paste, glycerine or water.
As the further scheme of the present invention: the minimum gauge of described step 4) midplane sample block is 20 × 20 × 6mm.
Compared with prior art, the invention has the beneficial effects as follows: the present invention can measure the ectonexine wall thickness of metallurgical binding composite bimetal pipe fast and accurately, and the data accuracy of measurement is better, error is little, avoids the personal error that artificial kind of calliper brings.And this method is simple to operate, greatly improve the checkability in production run, and improve the accuracy of data.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention 1, be fabricated to X70QS/N06625 bimetallic seamless steel pipe.
1) outer employing low alloy steel X70, internal layer adopts nickel-base alloy N06625, and design size is 219.1 × (8+3) × 11000mm, first to test process to production tube surface, ensure that measured surface is smooth, clean, without scale, zero defect, end impulse-free robustness;
2) instrument and probe is selected, and instrument is the audiogage of pulse echo formula, and operating frequency range is 2 ~ 15MHz, and has the gain knob of stepping 2.0dB or below 2.0dB; Choose that horizontal linearity error is not more than 1%, vertical linearity error is not more than 5%, frequency is 2-15MHz, diameter is the double crystal probe of 10mm;
3) couplant is selected: adopt sound translative performance good, and the couplant on not damage check surface, select machinery oil;
4) making of standard specimen: first choose and tested composite bimetal pipe specification, material, contrast sample block that Technology for Heating Processing is identical with surface appearance, secondly according to composite bimetal pipe ectonexine two kinds of metal materials, makes the plane sample block being used for caliper velocity respectively; Again make the pipe ring sample of a long 200mm, one end car of this pipe ring sample falls outer layer metal, and other end car falls inner layer metal, and car goes length to be 50mm, and thickness and precision is at ± 0.1mm, and size of sample is 50 × 50 × 11mm;
5) UC: in detection beginning and centre, verification is carried out to equipment and check to keep regenerating sensitivity, two the plane sample blocks made are utilized to carry out the measurement of two kinds of metal velocities of sound, utilize the pipe ring sample made to carry out the verification of audiogage, detect with slide calliper rule and be less than 0.1mm with audiogage testing result compare error;
6) mensuration of composite bimetal pipe individual layer wall thickness: according to material and the thickness of tested composite bimetal pipe, double crystal probe uses homostrobe, detects the velocity of sound that internal layer uses its correspondence, records its thickness.
7) testing result is as shown in table 1.
Table 1
In the embodiment of the present invention 2, be fabricated to X52QS/N08825 bimetallic seamless steel pipe.
1) outer employing low alloy steel X52, internal layer adopts nickel-base alloy N08825, and design size is 168.3 × (11+3) × 11000mm, first to test process to production tube surface, ensure that measured surface is smooth, clean, without scale, zero defect, end impulse-free robustness;
2) instrument and probe is selected, and instrument is the audiogage of pulse echo formula, and operating frequency range is 2 ~ 15MHz, and has the gain knob of stepping 2.0dB or below 2.0dB; Choose that horizontal linearity error is not more than 1%, vertical linearity error is not more than 5%, frequency is 2-15MHz, diameter is the single crystal probe of 10mm;
3) couplant is selected: adopt sound translative performance good, and the couplant on not damage check surface, select water;
4) making of standard specimen: first choose and tested composite bimetal pipe specification, material, contrast sample block that Technology for Heating Processing is identical with surface appearance, secondly according to composite bimetal pipe ectonexine two kinds of metal materials, makes the plane sample block being used for caliper velocity respectively; Again make the pipe ring sample of a long 200mm, one end car of this pipe ring sample falls outer layer metal, and other end car falls inner layer metal, and car goes length to be 50mm, and thickness and precision is at ± 0.1mm, and size of sample is 20 × 20 × 14mm;
5) UC: in detection beginning and centre, verification is carried out to equipment and check to keep regenerating sensitivity, two the plane sample blocks made are utilized to carry out the measurement of two kinds of metal velocities of sound, utilize the pipe ring sample made to carry out the verification of audiogage, detect with slide calliper rule and be less than 0.1mm with audiogage testing result compare error;
6) mensuration of composite bimetal pipe individual layer wall thickness: according to material and the thickness of tested composite bimetal pipe, single crystal probe uses double-gate doorframe firmly to begin ripple, alloy-layer boundary wave, end ripple, measures internal layer thickness.
7) testing result is as shown in table 2.
Table 2
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a measuring method for metallurgical binding composite bimetal pipe wall thickness, is characterized in that, comprises the following steps:
1) process on composite bimetal pipe surface: composite bimetal pipe surface is processed, composite bimetal pipe smooth surface, cleaning, without scale, end impulse-free robustness, and have good flatness;
2) instrument, probe selected: instrument is the audiogage of pulse echo formula, and operating frequency range is 2 ~ 15MHz, and has the gain knob of stepping 2.0dB or below 2.0dB; Choose that horizontal linearity error is not more than 1%, vertical linearity error be not more than 5%, single crystal probe, the double crystal probe of frequency to be 2-15MHz diameter be 5-10mm;
3) couplant is selected: adopt sound translative performance good, and the couplant on not damage check surface;
4) making of standard specimen: first choose and tested composite bimetal pipe specification, material, contrast sample block that Technology for Heating Processing is identical with surface appearance, secondly according to composite bimetal pipe ectonexine two kinds of metal materials, makes the plane sample block being used for caliper velocity respectively; Again make the pipe ring sample of a long 200mm, and one end car of this pipe ring sample falls outer layer metal, other end car falls inner layer metal, and car goes length to be 50mm, and thickness and precision is at ± 0.1mm;
5) UC: carry out verification in detection beginning and centre to equipment and check to keep regenerating sensitivity, utilize two the plane sample blocks made to carry out the measurement of two kinds of metal velocities of sound, the pipe ring sample that utilization makes carries out the verification of audiogage;
6) mensuration of composite bimetal pipe individual layer wall thickness: according to material and the thickness of tested composite bimetal pipe, selects to adapt to probe, uses the corresponding sample block check velocity of sound; Single crystal probe uses double-gate doorframe firmly to begin ripple, alloy-layer boundary wave, end ripple, measures internal layer thickness; Double crystal probe uses homostrobe, detects the velocity of sound that internal layer uses its correspondence, records its thickness.
2. the measuring method of metallurgical binding composite bimetal pipe wall thickness according to claim 1, it is characterized in that, in described step 3), couplant comprises machine oil, paste, glycerine or water.
3. the measuring method of metallurgical binding composite bimetal pipe wall thickness according to claim 1, is characterized in that, the minimum gauge of described step 4) midplane sample block is 20 × 20 × 6mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768558A (en) * | 2017-11-30 | 2018-03-06 | 惠州市天翔昌运电子有限公司 | Aluminum alloy battery lid further processing technique and aluminum alloy battery lid |
| CN110274563A (en) * | 2019-07-25 | 2019-09-24 | 中国计量大学 | Non-metal board calibrator error-detecting calibrating installation and method |
| CN114894132A (en) * | 2022-05-08 | 2022-08-12 | 三河建华高科有限责任公司 | Semiconductor wafer thickness detection control system |
| CN110274563B (en) * | 2019-07-25 | 2024-04-05 | 中国计量大学 | Error detection and calibration device and method for non-metal plate thickness gauge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107768558A (en) * | 2017-11-30 | 2018-03-06 | 惠州市天翔昌运电子有限公司 | Aluminum alloy battery lid further processing technique and aluminum alloy battery lid |
| CN110274563A (en) * | 2019-07-25 | 2019-09-24 | 中国计量大学 | Non-metal board calibrator error-detecting calibrating installation and method |
| CN110274563B (en) * | 2019-07-25 | 2024-04-05 | 中国计量大学 | Error detection and calibration device and method for non-metal plate thickness gauge |
| CN114894132A (en) * | 2022-05-08 | 2022-08-12 | 三河建华高科有限责任公司 | Semiconductor wafer thickness detection control system |
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