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EP0261273B1 - Méthode d'opération d'un dispositif de relaxation par vibration - Google Patents

Méthode d'opération d'un dispositif de relaxation par vibration Download PDF

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Publication number
EP0261273B1
EP0261273B1 EP86113278A EP86113278A EP0261273B1 EP 0261273 B1 EP0261273 B1 EP 0261273B1 EP 86113278 A EP86113278 A EP 86113278A EP 86113278 A EP86113278 A EP 86113278A EP 0261273 B1 EP0261273 B1 EP 0261273B1
Authority
EP
European Patent Office
Prior art keywords
harmonics
vibrator
workpiece
fact
speeds
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.)
Expired - Lifetime
Application number
EP86113278A
Other languages
German (de)
English (en)
Other versions
EP0261273A1 (fr
Inventor
Dietmar Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VSR Martin Engineering GmbH
Original Assignee
VSR Martin Engineering GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by VSR Martin Engineering GmbH filed Critical VSR Martin Engineering GmbH
Priority to DE8686113278T priority Critical patent/DE3676703D1/de
Priority to EP86113278A priority patent/EP0261273B1/fr
Priority to AT86113278T priority patent/ATE59319T1/de
Priority to US07/097,212 priority patent/US4823599A/en
Priority to KR1019870010612A priority patent/KR950013283B1/ko
Priority to SU874203415A priority patent/SU1620051A3/ru
Priority to JP62239082A priority patent/JPS63303622A/ja
Priority to CA000547898A priority patent/CA1311542C/fr
Priority to ES8702750A priority patent/ES2005350A6/es
Priority to CN87106584A priority patent/CN1016706B/zh
Publication of EP0261273A1 publication Critical patent/EP0261273A1/fr
Application granted granted Critical
Publication of EP0261273B1 publication Critical patent/EP0261273B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation

Definitions

  • the invention relates to a machine for unclamping workpieces, in which the workpiece is subjected to vibrations of selected speed values of a vibrator and in which the selection of the speed values of the vibrator is taken from a measurement which reflects the vibration behavior of the workpiece when excited by the vibrator.
  • the speed of the vibrator is usually from 1,200 to 6,000 rpm or even up to 12,000 rpm, which Excitation frequencies of 20 - 100 Hz or 200 Hz corresponds, whereby over this working range those speeds or frequencies are determined in a measuring run at which the workpiece tends to vibrate strongly.
  • the vibration behavior is usually determined by an accelerometer attached to the workpiece.
  • the workpiece is then subjected to a treatment by the vibrator at speeds at which the workpiece had resonance frequencies in the previous measuring run.
  • the present invention has for its object to provide a method for operating a machine of the type mentioned, in which the optimal degree of relaxation is more targeted than with previous methods approachable.
  • the characterizing features of claim 1 in that the individual speed values of the vibrator in its working range (e.g. 1,200 to 6,000 rpm or 20 to 100 Hz) in a defined harmonic range (e.g. 100 to 2,000 Hz), the respective harmonics of those vibrations are determined in which resonances or the like stable vibration states occur in the working area, and that those vibrational speed values of the vibrator are selected in its working area to relax the workpiece that are responsible for an accumulation of harmonics in the defined harmonic range are.
  • the individual speed values of the vibrator in its working range e.g. 1,200 to 6,000 rpm or 20 to 100 Hz
  • a defined harmonic range e.g. 100 to 2,000 Hz
  • the present invention is based on the knowledge that the distribution of the harmonics of the vibrations propagating in a workpiece due to the vibrator excitation provides significantly better information about the excitation frequencies at which the vibrator should be relaxed in its working area than the peaks occurring in the working area itself.
  • Workpieces do not have to be very complex to have a large number of stable vibration states that are far outside the frequency range in which the vibrator is operated.
  • the working vibrations of the vibrator that lead to the highest possible number of excitations in the harmonic range are to be regarded as essential.
  • the resonances or the other stable vibration states similar to them are determined in the working range of the vibrator, and the associated harmonics are determined mathematically for the peaks determined in the vibration behavior. It is then determined from these arithmetically determined harmonic values which of the values from the working range of the vibrator are the cause of an accumulation of harmonics.
  • the harmonics are determined using measurement technology.
  • the amplitudes of the measured harmonics are extracted as an additional selection criterion.
  • the frequency of the harmonics is therefore correlated with the respective amplitude, for example multiplied by then make the selection from the diagram obtained in this way.
  • Claim 5 specifies a preferred development which leads to a further optimization of the selection of the speed values of the vibrator for relaxation.
  • This method can be used both in the arithmetical determination of the harmonics (claim 2) and in their metrological determination (claim 3).
  • the method according to claim 5 is particularly suitable for evaluation by a computer. By dividing the harmonic range into adjacent windows with a defined bandwidth of, for example, 7 Hz in each case, one obtains an immediate statement about the frequency ranges in which harmonics occur frequently.
  • the further speed values for vibrator relaxation are determined from the order of the speed values, each of which has supplied the highest number of selected window areas with harmonics.
  • the selection criterion according to claim 8 is such that those harmonics which result from already selected speed values of the vibrator are no longer taken into account. One speed value is selected in each case, and the selected window areas are then redefined. Since those harmonics that belong to the already selected speed are no longer taken into account, window areas that were previously selected are thus eliminated and the next working speed of the vibrator is selected from the remaining or newly selected window areas.
  • Claim 9 specifies different possibilities to determine the measurement diagram from which the harmonics are determined.
  • the acceleration / speed diagram has usually been used so far.
  • at least one accelerometer is attached to the workpiece to record the vibration behavior, which indicates relatively well at which frequencies the preferred vibrations of the workpiece lie.
  • an amplitude / speed diagram or a distortion factor / speed diagram instead of such an acceleration value / speed diagram, one can also use an amplitude / speed diagram or a distortion factor / speed diagram.
  • the distortion factor / speed diagram has the advantage that it does not have a quadratic increase with increasing frequencies like the acceleration values / speed diagram, but, apart from the peaks contained therein, has a constant course over the speed.
  • FIG. 1 shows a typical acceleration / speed diagram of a workpiece over a speed range from 1,200 to 4,800 rpm. This diagram shows a large number of maxima or peaks at which increased acceleration values are shown with the associated speed. These peaks need not necessarily be due to resonant vibrations at the frequency of excitation by the vibrator if the accelerometer is sensitive to higher frequencies. In this case, the accelerometer also measures accelerations of vibrations with frequencies outside the working range. It may well happen that the workpiece vibrates only slightly at the excitation frequency of 40 Hz, for example, but the accelerometer nevertheless shows a relatively high value there. This is a sign that the workpiece then vibrates strongly with the harmonics generated at 40 Hz.
  • the window areas are now sorted according to the number of harmonics that have fallen into them.
  • 1 is a curve that represents the statistical harmonic distribution.
  • the statistical harmonic distribution means the one that results when the same harmonic calculation is carried out as above, but does not start from the frequencies at which peaks occur in the workpiece, but is based on a constant step width of, for example, 1 Hz. As this curve shows, the statistical distribution is not constant over the harmonic range, but has a maximum. An improvement of the above method is obtained if the number of harmonics in the individual window areas is normalized in relation to this statistical distribution before the window areas are ranked.
  • the relaxation of a workpiece is further optimized by the following method supplement.
  • the numbers of harmonics in the individual window areas are again determined on the basis of the peaks in the acceleration values / speed diagram, where appropriate normalizing with the statistical distribution.
  • the ranking of the window areas is then determined again and, for example, the highest-ranking 100 of the 317 window areas are selected.
  • the harmonics that made these window areas available for selection are then subjected to a further investigation, in that for each of these 100 window areas those excitation frequencies from the working area of the vibrator are combined into a family that have generated harmonics in this window area.
  • a family can consist of 2 to 14 family members, for example.
  • the family members are now put together for all 100 selected window areas in the vibrator's work area and the order of the family members is determined in a priority list according to the number of their "degrees of kinship".
  • 3a, 3b illustrate what is meant by the "degree of kinship".
  • the arrow chain belonging to window area a identifies those frequencies from the working area which have generated harmonics which fell into window area a, and the corresponding is done with window area b.
  • the family fam a includes the frequencies f2, f4, f5 and f7 and the family fam b the frequencies f1, f3, f4 and f6.
  • the frequency f4 represents a special case, since this frequency f4 belongs to both the Fam a family and the Fam b family. These families are called related because of the common membership of this frequency f4.
  • the frequency f4 has a degree of relationship, while all other frequencies shown in FIG. 3 each have no further degree of relationship. It is easy to imagine that with the large number of peaks occurring in a measurement protocol according to FIG. 1, there are families with a large number of family members and, accordingly, also high degrees of kinship. In the above-mentioned order of frequencies from the working range of the vibrator, those frequencies which have the greatest number of degrees of relationship are given the highest priorities. In the simplified example according to FIG.
  • the frequency f4 would be in the most senior position, while all the others (zero degrees of kinship) would have an equal rank.
  • this selection criterion results in a very differentiated list with a maximum number of up to 10 degrees of relationship. The frequencies of the vibrator's working range are selected that have the highest degree of relationship in this list.
  • the described additional selection criterion on "family formation” is based on the knowledge that those frequencies in the working range of the vibrator that are suggested for selection by the investigations in the harmonic range (window formation and selection) are the more essential, which are also possible have a high number of degrees of kinship, since each degree of kinship means that with the selection of only one frequency (frequency f4 in the above example) an additional harmonic range (the two window areas a and b) is detected.
  • an acceleration value / speed diagram was used for the workpiece to be subjected to the relaxation, in which the maxima are determined and the associated harmonics are then calculated.
  • the measurement of the harmonics can be carried out using known Fourier analysis methods or the like. In practice, it is usually sufficient to determine the harmonic distribution for only a few speeds of the vibrator, because due to the mostly strongly non-linear excitation by the vibrator, not only do harmonics arise from the fundamental frequency, but the excitation takes place anyway in a relatively broad frequency spectrum.
  • the above procedure can be carried out identically and, because the amplitudes of the harmonics are also obtained when measuring in the harmonic range, these amplitudes can also be obtained still be included in the optimization, with preference given to those harmonics that lead to higher amplitudes.
  • the distortion factor can be defined using the following formula:
  • the distortion factor can be obtained from the analysis of the frequency spectrum, but also with simple measuring means.
  • the frequency spectrum analysis essentially reproduces the harmonic component of an oscillation in relation to the basic component, which can easily be achieved by a corresponding filter arrangement which provides a limitation at 100 Hz for the above example.
  • the distortion factor / speed diagram has the advantage that it does not have such a strong increase to higher frequencies (even without resonance peaks, the acceleration value / speed diagram has a quadratic increase over the speed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Heat Treatment Of Articles (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Claims (9)

1. Procédé de fonctionnement d'une machine de relaxation de pièces, dans lequel la pièce est soumise à des vibrations obtenues par le choix de la vitesse de rotation d'un vibrateur, et dans lequel le choix des vitesses de rotation du vibrateur est obtenu à partir d'une mesure qui restitue le comportement vibratoire de la pièce lors de l'excitation par le vibrateur dans sa plage de travail (par exemple de 20 Hz à 100 Hz), caractérisé en ce que, pour les valeurs individuelles des vitesses de rotation du vibrateur dans sa plage de travail, dans une plage d'harmoniques définie (par exemple 100 Hz à 2000 Hz), on détermine les harmoniques respecitves des vibrations dans lesquelles surviennent, dans la plage de travail, des résonances ou des états vibratoires stables analogues, et en ce que, pour relaxer la pièce, on choisit les valeurs de vitesse de rotation qui provoquent une accumulation d'harmoniques dans la plage d'harmoniques définie.
2. Procédé selon la revendication 1, caractéri- séen ce que les harmoniques concenrant les résonances isolées (ou les autres états vibratoires stables analogues) qui sont situées dans la plage de travail du vibrateur sont déterminées par calcul.
3. Procédé selon la revendication 1, caractérisé en ce que les ondes harmoniques apparaissant lors d'une excitation dans la plage de travail sont déterminées par une technique de mesure.
4. Procédé selon la revendication 3, caractérisé en ce que l'on utilise comme critère supplémentaire de choix, en sus de l'accumulation d'harmonique, les amplitudes harmoniques dans une plage d'harmoniques définie, en pondérant dans le diagramme de densités d'harmoniques la densité des harmoniques conjointement avec leur amplitude respective, par exemple en les multipliant, et le diagramme ainsi obtenu étant ensuite mis à profit pour sélectionner les fréquences de travail.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que l'on forme dans la zone des harmoniques des fenêtres de plage de fréquences dans lesquelles on effectue le comptage des harmoniques qui s'y manifestent, et que, pour déterminer l'accumulation des harmoniques, on choisit les plages de fenêtres qui présentent le nombre le plus élevé d'harmoniques, le cas échéant en effectuant une normalisation préalable vis-à-vis de la répartition statistique.
6. Procédé selon la revendication 5, caractérisé en ce que pour les harmoniques provenant de chaque plage de fenêtre sélectionnée, on détermine à partir de la plage de travail du vibrateur les vitesses de rotation qui provoquent ces harmoniques et qu'on donne la préférence à la vitesse de rotation du vibrateur qui a provoqué des harmoniques dans un nombre élevé de plages de fenêtres sélectionnées (formation de familles).
7. Procédé selon la revendication 6, caractérisé en ce que l'on choisit la prochaine valeur de rotation selon l'ordre de succession des valeurs d'après le nombre le plus élevé de plages de fenêtres d'harmoniques sélectionnées dans lesquelles elles ont produit des harmoniques.
8. Procédé selon la revendication 7, caractérisé en ce qu'on utilise le même critère pour sélectionner chaque prochaine vitesse de rotation, mais en excluant les harmoniques qui étaient déjà déterminantes pour la sélection des valeurs précédentes de la vitesse de rotation.
9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que l'on prend pour base les valeurs d'accélération ou les facteurs de dictorsion pour effectuer la détermination des résonances ou des vibrations ou harmoniques analogues stables qui surviennent sur la pièce.
EP86113278A 1986-09-26 1986-09-26 Méthode d'opération d'un dispositif de relaxation par vibration Expired - Lifetime EP0261273B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
DE8686113278T DE3676703D1 (de) 1986-09-26 1986-09-26 Verfahren zum betreiben einer maschine zum entspannen von werkstuecken durch vibration.
EP86113278A EP0261273B1 (fr) 1986-09-26 1986-09-26 Méthode d'opération d'un dispositif de relaxation par vibration
AT86113278T ATE59319T1 (de) 1986-09-26 1986-09-26 Verfahren zum betreiben einer maschine zum entspannen von werkstuecken durch vibration.
US07/097,212 US4823599A (en) 1986-09-26 1987-09-15 Method of operating a machine for the stress relief of workpieces by vibration
SU874203415A SU1620051A3 (ru) 1986-09-26 1987-09-25 Способ обработки изделий
JP62239082A JPS63303622A (ja) 1986-09-26 1987-09-25 振動により被加工部材の応力を除去する機械の操作方法
KR1019870010612A KR950013283B1 (ko) 1986-09-26 1987-09-25 진동을 이용한 가공물 응력완화장치의 작동방법
CA000547898A CA1311542C (fr) 1986-09-26 1987-09-25 Procede vibratoire pour le detensionnement des ebauches
ES8702750A ES2005350A6 (es) 1986-09-26 1987-09-25 Procedimiento para el funcionamiento de una maquina para el destensado de piezas.
CN87106584A CN1016706B (zh) 1986-09-26 1987-09-26 通过振动消除工件应力的设备的操作方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86113278A EP0261273B1 (fr) 1986-09-26 1986-09-26 Méthode d'opération d'un dispositif de relaxation par vibration

Publications (2)

Publication Number Publication Date
EP0261273A1 EP0261273A1 (fr) 1988-03-30
EP0261273B1 true EP0261273B1 (fr) 1990-12-27

Family

ID=8195452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86113278A Expired - Lifetime EP0261273B1 (fr) 1986-09-26 1986-09-26 Méthode d'opération d'un dispositif de relaxation par vibration

Country Status (10)

Country Link
US (1) US4823599A (fr)
EP (1) EP0261273B1 (fr)
JP (1) JPS63303622A (fr)
KR (1) KR950013283B1 (fr)
CN (1) CN1016706B (fr)
AT (1) ATE59319T1 (fr)
CA (1) CA1311542C (fr)
DE (1) DE3676703D1 (fr)
ES (1) ES2005350A6 (fr)
SU (1) SU1620051A3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413181A2 (fr) * 1989-08-14 1991-02-20 Bonal Technologies, Inc. Relaxation des contraintes de métaux
EP0889140A1 (fr) * 1997-07-24 1999-01-07 VSR Martin Engineering GmbH Procédé de fonctionnement d'une machine de relaxation de pièces

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5035142A (en) * 1989-12-19 1991-07-30 Dryga Alexandr I Method for vibratory treatment of workpieces and a device for carrying same into effect
US5242512A (en) * 1992-03-13 1993-09-07 Alloying Surfaces, Inc. Method and apparatus for relieving residual stresses
WO1997004291A1 (fr) * 1995-07-14 1997-02-06 Brent Felix Jury Procede et appareil permettant d'effectuer des essais de controle et de relaxation des tensions internes
US6338765B1 (en) 1998-09-03 2002-01-15 Uit, L.L.C. Ultrasonic impact methods for treatment of welded structures
US20050145306A1 (en) * 1998-09-03 2005-07-07 Uit, L.L.C. Company Welded joints with new properties and provision of such properties by ultrasonic impact treatment
US6932876B1 (en) 1998-09-03 2005-08-23 U.I.T., L.L.C. Ultrasonic impact machining of body surfaces to correct defects and strengthen work surfaces
US20060016858A1 (en) * 1998-09-03 2006-01-26 U.I.T., Llc Method of improving quality and reliability of welded rail joint properties by ultrasonic impact treatment
US6916387B2 (en) * 2002-05-06 2005-07-12 Howmet Corporation Weld repair of superalloy castings
US20050115646A1 (en) * 2003-12-02 2005-06-02 Accelerated Technologies Corporation Stress free steel and rapid production of same
US8545645B2 (en) * 2003-12-02 2013-10-01 Franklin Leroy Stebbing Stress free steel and rapid production of same
JP2005192194A (ja) * 2003-12-05 2005-07-14 Yazaki Corp 通信装置及び通信システム
US7301123B2 (en) 2004-04-29 2007-11-27 U.I.T., L.L.C. Method for modifying or producing materials and joints with specific properties by generating and applying adaptive impulses a normalizing energy thereof and pauses therebetween
CN1317545C (zh) * 2004-05-25 2007-05-23 林易人 振动消除应力和振动焊接过程中的参数检测方法及其应用
US7276824B2 (en) * 2005-08-19 2007-10-02 U.I.T., L.L.C. Oscillating system and tool for ultrasonic impact treatment
US20070068605A1 (en) * 2005-09-23 2007-03-29 U.I.T., Llc Method of metal performance improvement and protection against degradation and suppression thereof by ultrasonic impact
US20070244595A1 (en) * 2006-04-18 2007-10-18 U.I.T., Llc Method and means for ultrasonic impact machining of surfaces of machine components
US7764038B2 (en) * 2007-04-26 2010-07-27 Siemens Industry, Inc. Devices, systems, and methods for relieving stress
RU2447162C2 (ru) * 2010-04-06 2012-04-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновский государственный технический университет" Способ ультразвуковой обработки сварных металлоконструкций
US8700201B2 (en) * 2010-09-13 2014-04-15 Okuma Corporation Vibration suppressing device
RU2610194C1 (ru) * 2015-08-26 2017-02-08 Акционерное общество "Центр технологии судостроения и судоремонта" (АО "ЦТСС") Способ стабилизации формы и размеров корпусов судов, построенных в лекальных стендах
RU2610195C1 (ru) * 2015-08-26 2017-02-08 Акционерное общество "Центр технологии судостроения и судоремонта" (АО "ЦТСС") Способ стабилизации формы и размеров корпусов судов, построенных каркасным методом
CA3086060A1 (fr) 2017-12-22 2019-06-27 Flexible Steel Lacing Company Appareil et procede de surveillance de systemes de transporteur
CN110586695B (zh) * 2019-07-31 2021-08-24 广东工业大学 一种发动机分叉尾喷管焊缝激光冲击强化和校形的方法及装置
US11429900B1 (en) * 2021-10-26 2022-08-30 Tractian Limited Systems and methods for automatic detection of error conditions in mechanical machines
KR102491758B1 (ko) * 2022-10-31 2023-01-30 (주)신화마이스터 엘리베이터 자재의 판금 가공방법

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622404A (en) * 1969-02-19 1971-11-23 Leonard E Thompson Method and apparatus for stress relieving a workpiece by vibration
US3677831A (en) * 1970-05-14 1972-07-18 Lodding Engineering Corp Stress relief in solid materials
US3741820A (en) * 1970-12-07 1973-06-26 A Hebel Method for stress relieving metal
US4001053A (en) * 1972-04-21 1977-01-04 Eim Electric Co., Ltd. Method of removing residual stress of a work formed of metal or ceramic and a sealing apparatus
US4381673A (en) * 1980-12-03 1983-05-03 Martin Engineering Company Vibrational stress relief
US4446733A (en) * 1981-08-17 1984-05-08 Design Professionals Financial Corporation Stress control in solid materials
US4402222A (en) * 1982-01-26 1983-09-06 Snap-On Tools Corporation Bolt load determining apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413181A2 (fr) * 1989-08-14 1991-02-20 Bonal Technologies, Inc. Relaxation des contraintes de métaux
EP0413181A3 (en) * 1989-08-14 1991-09-04 Bonal Technologies, Inc. Stress relief of metals
EP0889140A1 (fr) * 1997-07-24 1999-01-07 VSR Martin Engineering GmbH Procédé de fonctionnement d'une machine de relaxation de pièces
US6116088A (en) * 1997-07-24 2000-09-12 Vsr Martin Engineering Gmbh Method of operating a machine for stress relieving workpieces

Also Published As

Publication number Publication date
ATE59319T1 (de) 1991-01-15
KR880004106A (ko) 1988-06-01
KR950013283B1 (ko) 1995-11-02
ES2005350A6 (es) 1989-03-01
EP0261273A1 (fr) 1988-03-30
CN87106584A (zh) 1988-05-18
JPS63303622A (ja) 1988-12-12
SU1620051A3 (ru) 1991-01-07
CA1311542C (fr) 1992-12-15
DE3676703D1 (de) 1991-02-07
CN1016706B (zh) 1992-05-20
US4823599A (en) 1989-04-25

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