CN100578213C - Fault detection method of roller body chamfering - Google Patents
Fault detection method of roller body chamfering Download PDFInfo
- Publication number
- CN100578213C CN100578213C CN200710191891A CN200710191891A CN100578213C CN 100578213 C CN100578213 C CN 100578213C CN 200710191891 A CN200710191891 A CN 200710191891A CN 200710191891 A CN200710191891 A CN 200710191891A CN 100578213 C CN100578213 C CN 100578213C
- Authority
- CN
- China
- Prior art keywords
- roll barrel
- roll
- fillet surface
- detection
- chamfer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention discloses a crack detection method for a roller body chamfer. The steps of the method are as follows: step 1, a surface ultrasonic probe is directly contacted with the surface of the roller body through a couplant; a distance H between the surface ultrasonic probe and the most external end of a roller roll body chamfer face is between 20 mm and 30 mm; step 2, a machine is started up; so the surface ultrasonic probe carries out all-round scanning examination to the chamfer face of the roll body; step 3, the reflection echo produced by the most external end of the chamfer and the reflection echo produced by the most internal end of the chamfer are taken as the standard echo; a defect is determined according to other reflection echoes between the two standard echoes. When the defect on the chamfer face is detected, the type of the defect is ensured through a magnetic particle detecting method. With the method provided by the present invention, the various defects which can not be observed through naked eyes on the chamfer face of the roll body can be detected; so the condition of product disqualification caused by the expansion of the defect on the chamfer face in the continuous quenching and other processes is avoided.
Description
Technical field
The present invention relates to a kind of roll method of detection, relate in particular to the method for detection of roll barrel chamfering.
Background technology
Roll is one of strength member of steel rolling equipment, and roll is processed into by roller stock, and main process is: after roller stock is carried out rough turn, modified, quenching, cold treatment, tempering, finishing, obtain the roll finished product.In the manufacture process of roller stock and roll, the body of roll of roll inside and surface unavoidably have some defectives and produce.Defective for body of roll inside can detect with defect detection on ultrasonic basis, X ray method at present, and can detect with defect detection on ultrasonic basis, magnetic powder inspection method, eddy-current flaw detecting method and dye penetrant inspection method etc. for the defective on surface.Detection for body of roll inherent vice is generally carried out after rough turn, and generally carries out after modified for the detection of body surface defective; The body of roll is being carried out if the existence of detected defective does not meet national standard, judge that then roller stock is defective after inside detects a flaw, no longer carrying out following process and deal with in addition; After the body of roll is carried out surface inspection, if detected defective of coming still in the scope of process redundancy, then can be carried out grinding to body surface, and eliminate these surface imperfection before quenching.But all be measuring roll defective on one's body in the roll manufacturing, do not find that breaker roll body of roll chamfer surface place carries out the report of defects detection.
Summary of the invention
The object of the present invention is to provide a kind of method of detection of roll barrel chamfering.
The technical scheme that realizes the object of the invention is: a kind of method of detection of roll barrel chamfering, have following steps: 1. the ultrasonic surface probe that will link to each other with ultra-sonic defect detector directly contacts the roll barrel surface by couplant, the hyperacoustic direction of ultrasonic surface probe emission is 20～30mm towards the fillet surface and the distance H of ultrasonic surface probe from fillet surface and roll barrel junction of roll barrel, and the smooth finish of chamfer surface is δ 3.2～6.3; 2. start makes ultrasonic surface probe do relative motion from fillet surface and 20～30mm place, roll barrel junction between the circumferencial direction on roll barrel surface and roll barrel, and the fillet surface of the body of roll is carried out circumferential scanning; 3. whether reflection echo that produces with fillet surface and roll barrel junction and fillet surface and the reflection echo of roller neck junction generation be as standard wave, according to having other reflection echo to determine whether defectiveness between these two standard waves.
As detect the fillet surface defectiveness, then determine the type of this defective again by magnaflux.
The surface wave probe of above-mentioned steps in 1. is 90 ° of probes, and the detection frequency is 2MHz.The couplant of above-mentioned steps in 1. is machine oil.The length L from fillet surface and roller neck junction to fillet surface and roll barrel junction of the roll barrel fillet surface of above-mentioned steps in 1. is 30～300mm, and the numerical values recited of chamfering θ is 10～45 °.
The present invention has positive effect: (1) method of the present invention can detect on the body of roll fillet surface naked eyes can't observed various defectives, can in the scope of process redundancy permission, carry out grinding and eliminate these defectives, thereby prevent in processing such as follow-up quenching, cause the expansion of fillet surface defective and cause the generation of the defective situation of product.(2) the present invention is when adopting ultrasonic surface probe and corresponding apparatus to detect, and carrying out flaw detection is gone out after the crackle position, detects defect type by magnetic powder inspection again, as linear discontinuities and spot defect etc., thereby improves the flaw detection accuracy.(3) probe is placed on from body of roll chamfering 20～30mm place, and this fillet surface is detected a flaw, can avoid the defective and the influence of area of stress concentration of roll barrel and body of roll chamfering connecting portion detecting a flaw.(4) adopt method of the present invention can carry out the detection of chamfering prevention ring crack, need not increase other equipment onsite user's roll.
Description of drawings
Fig. 1 is the structural representation of roll barrel chamfering of the present invention.
Embodiment
As shown in Figure 1, the used surface wave probe of the present invention is 90 ° of probes, and it detects frequency is 2MHz.Used couplant is a machine oil.The smooth finish of body of roll chamfer surface is δ 6.3, be do not have greasy dirt or water of chamfer surface, tangible manufacturing deficiency can not be arranged, but allow to leave the smooth car trace of machine work, the length L of fillet surface and roller neck junction 5 to fillet surface and roll barrel junction 4 is 100mm, and the numerical values recited of chamfering θ is 30 °.
The flaw detection step is as follows: the ultrasonic surface probe that 1. will link to each other with ultra-sonic defect detector 1 directly contacts roll barrel surface 2 by machine oil, the hyperacoustic direction of ultrasonic surface probe 1 emission is towards the fillet surface 3 of roll barrel, and ultrasonic surface probe 1 distance H from fillet surface and roll barrel junction 4 is 25mm.2. start makes ultrasonic surface probe 1 do relative motion from fillet surface and 25mm place, roll barrel junction between the circumferencial direction on roll barrel surface 2 and roll barrel, and the fillet surface 3 of the body of roll is carried out circumferential scanning; 3. whether reflection echo that produces with fillet surface and roll barrel junction 4 and fillet surface and the reflection echo of roller neck junction 5 generations be as standard wave, according to having other reflection echo to determine whether defectiveness between these two standard waves.Whether the reflection echo of reflection echo that produces with fillet surface and roll barrel junction and fillet surface and the generation of roller neck junction is as standard wave, according to also existing other reflection echo to determine whether defectiveness between these two standard waves.As between the two standard echoes reflection echo being arranged, then determine this defect type by magnetic powder inspection again.
Claims (5)
1, a kind of method of detection of roll barrel chamfering, it is characterized in that having following steps: 1. the ultrasonic surface probe (1) that will link to each other with ultra-sonic defect detector directly contacts roll barrel surface (2) by couplant, the hyperacoustic direction of ultrasonic surface probe (1) emission is 20～30mm towards fillet surface (3) and ultrasonic surface probe (1) distance H from fillet surface and roll barrel junction (4) of roll barrel, and the smooth finish of chamfer surface is δ 3.2～6.3; 2. start makes ultrasonic surface probe (1) do relative motion from fillet surface and 20～30mm place, roll barrel junction between the circumferencial direction of roll barrel surface (2) and roll barrel, and the fillet surface (3) of the body of roll is carried out circumferential scanning; 3. whether reflection echo that produces with fillet surface and roll barrel junction (4) and fillet surface and the reflection echo of roller neck junction (5) generation be as standard wave, according to having other reflection echo to determine whether defectiveness between these two standard waves.
2, the method for detection of roll barrel chamfering according to claim 1 is characterized in that: also have step 4., as detect the fillet surface defectiveness, then determine the type of this defective again by magnaflux.
3, the method for detection of roll barrel chamfering according to claim 1 and 2 is characterized in that: the surface wave probe (1) of step in 1. is 90 ° of probes, and the detection frequency is 2MHz.
4, the method for detection of roll barrel chamfering according to claim 1 and 2 is characterized in that: the couplant of step in 1. is machine oil.
5, the method for detection of roll barrel chamfering according to claim 1 and 2, it is characterized in that: the length L from fillet surface and roller neck junction (5) to fillet surface and roll barrel junction (4) of the roll barrel fillet surface (3) of step in 1. is 30～300mm, and the numerical values recited of chamfering θ is 10～45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710191891A CN100578213C (en) | 2007-12-18 | 2007-12-18 | Fault detection method of roller body chamfering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710191891A CN100578213C (en) | 2007-12-18 | 2007-12-18 | Fault detection method of roller body chamfering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101183088A CN101183088A (en) | 2008-05-21 |
| CN100578213C true CN100578213C (en) | 2010-01-06 |
Family
ID=39448438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710191891A Active CN100578213C (en) | 2007-12-18 | 2007-12-18 | Fault detection method of roller body chamfering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100578213C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642121A (en) * | 2012-05-05 | 2012-08-22 | 江苏常牵庞巴迪牵引系统有限公司 | Cast steel stator pressing ring repair welding process |
| CN104634874B (en) * | 2015-02-06 | 2018-08-24 | 宝钢轧辊科技有限责任公司 | Large forged back -up roll body of roll working lining defect inspection method |
| CN108414620B (en) * | 2018-03-17 | 2021-01-05 | 北京工业大学 | Surface wave detection method for circumferential cracks on inner wall of small-diameter depth ratio special-shaped pipeline |
| CN110865169A (en) * | 2019-11-13 | 2020-03-06 | 永卓防务科技有限公司 | Detection method for processing cracks of roller |
| CN113910006A (en) * | 2021-09-28 | 2022-01-11 | 内蒙古联晟新能源材料有限公司 | Method for repairing surface quality of working roller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002071649A (en) * | 2000-08-31 | 2002-03-12 | Kawasaki Heavy Ind Ltd | Welding monitoring method |
| CN1793900A (en) * | 2005-12-21 | 2006-06-28 | 上海宝钢工业检测公司 | Detection method of closed surface fatigue crack |
| JP2006177845A (en) * | 2004-12-24 | 2006-07-06 | Sumitomo Metal Ind Ltd | Ultrasonic flaw detection method |
| CN101027551A (en) * | 2004-10-20 | 2007-08-29 | Sms迪马格股份公司 | Method, device and circuit for detecting surface defects such as cracks, fractures and the like on a rolling mill rollers |
-
2007
- 2007-12-18 CN CN200710191891A patent/CN100578213C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002071649A (en) * | 2000-08-31 | 2002-03-12 | Kawasaki Heavy Ind Ltd | Welding monitoring method |
| CN101027551A (en) * | 2004-10-20 | 2007-08-29 | Sms迪马格股份公司 | Method, device and circuit for detecting surface defects such as cracks, fractures and the like on a rolling mill rollers |
| JP2006177845A (en) * | 2004-12-24 | 2006-07-06 | Sumitomo Metal Ind Ltd | Ultrasonic flaw detection method |
| CN1793900A (en) * | 2005-12-21 | 2006-06-28 | 上海宝钢工业检测公司 | Detection method of closed surface fatigue crack |
Non-Patent Citations (4)
| Title |
|---|
| 淬火锻钢轧辊的超声检测. 张明升.大型铸锻件，第01期. 1985 * |
| 超声表面波技术在宝钢支承辊检测中的应用. 安红艳.无损检测，第25卷第2期. 2003 * |
| 轧辊表面波超声检测技术. 蒋盛.无损检测，第26卷第5期. 2004 * |
| 轴类工件疲劳裂缝的超声波检测. 孙宗泰等.冶金设备，第02期. 1987 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101183088A (en) | 2008-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8490492B2 (en) | Method for nondestructive testing of pipes | |
| EP1801577A1 (en) | Ultrasonic inspection method and defect detection method for rolling bearing | |
| CN100578213C (en) | Fault detection method of roller body chamfering | |
| CN109765296B (en) | Three-dimensional positioning method for ultrasonic detection of internal defects of thick-wall pipe | |
| US8552718B2 (en) | Method for the nondestructive testing of pipes | |
| Kappes et al. | Potential improvements of the presently applied in-service inspection of wheelset axles | |
| CN111458408A (en) | Method for judging longitudinal defect of small-diameter pipe through ultrasonic guided wave detection | |
| CN107843648B (en) | Nondestructive testing method | |
| DO HAENG et al. | Influence of signal-to-noise ratio on eddy current signals of cracks in steam generator tubes | |
| CN105758933A (en) | Ultrasonic flaw detection process for forge pieces | |
| JP2010127618A (en) | Automatic sphere inspection method and device for the same with ultrasonic flaw detection system | |
| CN107052723B (en) | Machining process of engine shell | |
| Wang et al. | Application progress of tri-axial MFL sensors technology | |
| CN114137066A (en) | Hollow shaft outer surface array eddy current testing device | |
| CN108872370B (en) | Auxiliary method for evaluating effectiveness of orthogonal eddy current sensor for detecting weld joint | |
| CN103134853A (en) | Nondestructive detection method for crankshaft | |
| US20200003731A1 (en) | Ultrasonic flaw detector and ultrasonic flaw detection method | |
| JPWO2019117297A1 (en) | Rolling part inspection method and rolling part inspection apparatus | |
| CN201993343U (en) | Ultrasonic automatic flaw detection device for hot-rolled square-round steels | |
| JP2006234807A (en) | Defect detecting method | |
| CN111380949B (en) | Method for detecting defects of external threads of steel pipe based on sleeve connection | |
| CN103575809B (en) | The ultrasonic detection method of suspension insulator steel split foot stricture of vagina | |
| Kania et al. | Investigation and Assessment of Low-Frequency ERW Seam Imperfections by EMAT and CMFL ILI | |
| CN106018121A (en) | Bending test method for welding steel plate with thickness larger than 30 mm | |
| Han et al. | Research on pulsed eddy current technology for local corrosion defects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BAOSTEEL ROLL TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BAOSTEEL GROUP CHANGZHOU ROLL MANUFACTURING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 213019 No. 41, MCC Road, Changzhou, Jiangsu Patentee after: Baogang Roller Technology Co., Ltd. Address before: 213019 No. 41, MCC Road, Changzhou, Jiangsu Patentee before: Baosteel Group Changzhou Roll Manufacture Company |