FR2545391A1 - METHOD FOR MANUFACTURING ENDLESS STEEL BELT - Google Patents
METHOD FOR MANUFACTURING ENDLESS STEEL BELT Download PDFInfo
- Publication number
- FR2545391A1 FR2545391A1 FR8407012A FR8407012A FR2545391A1 FR 2545391 A1 FR2545391 A1 FR 2545391A1 FR 8407012 A FR8407012 A FR 8407012A FR 8407012 A FR8407012 A FR 8407012A FR 2545391 A1 FR2545391 A1 FR 2545391A1
- Authority
- FR
- France
- Prior art keywords
- steel
- steel belt
- thickness
- rolling
- ring
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/14—Making other particular articles belts, e.g. machine-gun belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G1/00—Driving-belts
- F16G1/20—Driving-belts made of a single metal strip
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Steel (AREA)
- Belt Conveyors (AREA)
- Press Drives And Press Lines (AREA)
Abstract
DANS LA METHODE, ON UTILISE UN PROCEDE DE ROULAGE ET, COMME MATERIAU DE DEPART, ON PREND UN ANNEAU D'ACIER AU CARBONE NON ALLIE OU FAIBLEMENT ALLIE, QUI EST SOUMIS A UN TRAITEMENT DE PATENTAGE ET QUI EST AMENE AUX DIMENSIONS ET A L'EPAISSEUR DESIREES PAR UNE OU PLUSIEURS ETAPES DE REDUCTION D'EPAISSEUR A FROID. LE MATERIAU DE DEPART EST UN ACIER CONTENANT DE 0,4 A 1,3 ET DE PREFERENCE DE 0,6 A 1 DE CARBONE.IN THE METHOD, A ROLLING PROCESS IS USED AND, AS STARTING MATERIAL, A RING OF NON-ALLOY OR LOW ALLOY CARBON STEEL IS TAKEN, WHICH IS SUBJECT TO A PATENTAGE TREATMENT AND WHICH IS TAKEN TO DIMENSIONS AND TO THE THICKNESS DESIRED BY ONE OR MORE STEPS OF COLD THICKNESS REDUCTION. THE STARTING MATERIAL IS A STEEL CONTAINING 0.4 TO 1.3 AND PREFERABLY 0.6 TO 1 OF CARBON.
Description
La présente invention concerne une méthode de roulage pourThe present invention relates to a rolling method for
réaliser une courroie sans fin en acier de faible épaisseur. make an endless belt of thin steel.
Une telle méthode est connue en pratique Selon cette méthode, on part d'un anneau en acier Maraging d'épaisseur relativement grande et de petit diamètre qu'on coupe dans un tuyau obtenu en coulant un cylindre en matériau de départ Comme l'acier Maraging très fortement allié, dont la résistance à la traction est très grande, convient très bien pour la déformation plastique à froid, il est possible de rouler l'anneau sans étape intermédiaire de recuit jusqu'à l'obtention du produit final défini Cependant, le produit qu'on obtient avec cette méthode présente un certain nombre d'inconvénients Le coût de l'acier Maraging est très élevé parce que l'acier doit être extrêmement pur, la présence d'alliages provoquant la formation de toutes sortes de précipités (carbures, scories, phases intermédiaires, etc) dans le Such a method is known in the art. According to this method, one starts from a Maraging steel ring of relatively large thickness and small diameter that is cut in a pipe obtained by casting a cylinder of starting material. very strongly alloyed, whose tensile strength is very large, is very suitable for cold plastic deformation, it is possible to roll the ring without intermediate annealing step to obtain the final product defined However, the product obtained with this method has a number of disadvantages The cost of Maraging steel is very high because the steel must be extremely pure, the presence of alloys causing the formation of all kinds of precipitates (carbides , slag, intermediate phases, etc.) in the
matériau qui ont des effets négatifs sur la force de fatigue. material that have negative effects on the fatigue force.
Le fait que la courbe de Wëhler du matériau de départ ne se termine pas à une valeur définie, mais continue à décroître dans la phase finale, entraîne une durée de vie limitée, ce qui est très gênant. The fact that the Whehler curve of the starting material does not end at a defined value, but continues to decrease in the final phase, leads to a limited life, which is very troublesome.
L'invention à pour objet de palier à ces inconvénients. The object of the invention is to overcome these disadvantages.
Selon l'invention, le matériau de départ n'est pas de l'acier Maraging fortement allié, mais au contraire de l'acier au carbone peu ou pas du tout allié, ce matériau étant soumis à un traitement de patentage et l'anneau étant amené en une ou plusieurs étapes de According to the invention, the starting material is not highly alloyed Maraging steel, but unlike carbon steel which is little or not alloyed, this material being subjected to patenting treatment and the ring being brought in one or more stages of
réduction à froid jusqu'aux taille et épaisseur désirées. cold reduction to the desired size and thickness.
En pratique, il s'est avéré que les courroies sans fin obtenues selon cette méthode étaient excellentes et peu chères En raison de la déformation à froid, la courroie acquiert, dans la direction dans laquelle a eu lieu la déformation direction qui coïncide avec la direction de la plus grande charge -, une structure favorable La résistance à la fatigue est très grande et une réduction considérable In practice, it has been found that the endless belts obtained by this method were excellent and inexpensive Due to the cold deformation, the belt acquires, in the direction in which the deformation took place direction that coincides with the direction of the largest load - a favorable structure The fatigue resistance is very large and a considerable reduction
d'épaisseur sans étape intermédiaire de recuit est possible. Thickness without intermediate annealing step is possible.
De préférence, l'acier utilisé comme matériau de départ dans cette méthode contient un pourcentage de carbone compris entre 0,4 et Preferably, the steel used as a starting material in this method contains a carbon percentage of between 0.4 and
1,3 %, et mieux encore entre 0,6 et 1 %. 1.3%, and more preferably between 0.6 and 1%.
De préférence,on obtient l'anneau qu'on utilise comme élément de départ à partir d'un élément cylindrique réalisé en emboutissant une feuille de matériau et en découpant ensuite l'élément embouti en anneaux. Au moyen d'un traitement de roulage, on peut obtenir jusqu'à 90 % Preferably, the ring is obtained which is used as starting element from a cylindrical element made by stamping a sheet of material and then cutting the pressed element into rings. By means of a rolling treatment, it is possible to obtain up to 90%
de réduction d'épaisseur sans recuit. thickness reduction without annealing.
On comprendra mieux l'invention avec les dessins joints, les Figs 1-3 montrant schématiquement les différentes étapes de la The invention will be better understood with the accompanying drawings, FIGS. 1-3 showing schematically the various steps of the
méthode selon l'invention.method according to the invention.
On part d'une feuille en acier très peu ou pas du tout allié d'épaisseur adéquate, portant la référence 1 à la Fig 1 qui montre schématiquement comment on emboutit ladite feuille 1 en une ou plusieurs étapes, au moyen de la matrice 2 et de llemboutissoir 3 de façon à obtenir un élément en forme de godet Comme on le voit à la Fig 2, on détache la collerette 5 et le fond 6 de l'élément, la partie 7 étant divisée en un certain nombre d'anneaux 7 A l'aide d'un dispositif connu dans la pratique, les anneaux 7 sont soumis à un traitement thermique qui consiste à chauffer les anneaux au-dessus du point supérieur de transformation Ac 3 pour les aciers faiblement perlitiques, ou du point Acl pour des aciers hautement perlitiques, un refroidissement rapide s'ensuivant, dans un milieu adéquat à une température entre 300 et 6000 C, de préférence entre 400 et 550 C, dans lequel l'austénite est transformée de façon isotherme en fine perlite, troostite ou bainite Ensuite, comme montré schématiquement à la Fig 3, les anneaux sont soumis à un traitement de roulage au moyen d'un dispositif de roulage comprenant un rouleau principal 8, les rouleaux supports associés 9 et les rouleaux d'étirement 10 Avec ce Starting from a steel sheet with very little or no alloy of adequate thickness, bearing the reference 1 in FIG. 1, which schematically shows how said sheet 1 is stamped in one or more stages by means of the die 2 and 3 to obtain a cup-shaped element As can be seen in FIG. 2, the flange 5 and the bottom 6 of the element are detached, the portion 7 being divided into a number of rings 7A. using a device known in the art, the rings 7 are subjected to a heat treatment which consists in heating the rings above the upper point of transformation Ac 3 for weakly pearlitic steels, or point Acl for steels highly pearlitic, followed by rapid cooling, in a suitable medium at a temperature between 300 and 6000 C, preferably between 400 and 550 C, wherein the austenite is isothermally converted to fine perlite, troostite or bainite Ensui 3, the rings are subjected to a rolling treatment by means of a rolling device comprising a main roller 8, the associated support rollers 9 and the stretching rollers 10.
roulage à froid, on donne aux anneaux les dimensions désirées. cold rolling, the rings are given the desired dimensions.
Exemple:Example:
feuille de matériau: épaisseur: 0,8 mm; 0,8 % de C; 0,25 % de Si; 0,4 sheet of material: thickness: 0.8 mm; 0.8% C; 0.25% Si; 0.4
% de Mn.% of Mn.
Traitement de roulage: on forme un godet en deux étapes, d'épaisseur 0,8 mm, de diamètre 70 mm et de hauteur 50 mm On découpe les anneaux Rolling treatment: a bucket is formed in two stages, 0.8 mm thick, 70 mm in diameter and 50 mm high. The rings are cut
dans ce godet.in this bucket.
Traitement thermique: passage en phase austénite de l'anneau 10 mn à 850 C, trempe dans un bain salé à 5000 C, maintien dans le bain Heat treatment: change to the austenite phase of the ring for 10 minutes at 850 ° C., quenching in a salt bath at 5000 ° C., keeping in the bath
pendant 5 mn.for 5 minutes.
Traitement de roulage: les anneaux sont roulés jusqu'à devenir une Rolling treatment: the rings are rolled up to become a
mince courroie d'une épaisseur de 0,2 mm et d'un diamètre de 245 mm. thin belt with a thickness of 0.2 mm and a diameter of 245 mm.
Dans ce cas, la réduction d'épaisseur est de 71 % Les courroies obtenues ont, en vertu de leur structure de déformation à froid, une In this case, the reduction in thickness is 71%. The belts obtained have, by virtue of their cold deformation structure, a
résistance à la fatigue très élevée. very high fatigue resistance.
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8301587A NL8301587A (en) | 1983-05-04 | 1983-05-04 | METHOD FOR FORMING AN ENDLESS STEEL STRAP |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2545391A1 true FR2545391A1 (en) | 1984-11-09 |
FR2545391B1 FR2545391B1 (en) | 1988-04-08 |
Family
ID=19841806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8407012A Expired FR2545391B1 (en) | 1983-05-04 | 1984-05-03 | METHOD OF MANUFACTURING AN ENDLESS STEEL BELT |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS6087905A (en) |
DE (1) | DE3416260A1 (en) |
FR (1) | FR2545391B1 (en) |
GB (1) | GB2139923B (en) |
NL (1) | NL8301587A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61132206A (en) * | 1984-11-30 | 1986-06-19 | Aisin Warner Ltd | Rolling device of endless metallic band |
JPH02274337A (en) * | 1989-04-14 | 1990-11-08 | Sumitomo Metal Ind Ltd | Production of laminated metallic belt |
JP3032273B2 (en) * | 1990-10-16 | 2000-04-10 | 日新製鋼株式会社 | Manufacturing method of high strength steel belt |
US5640868A (en) * | 1995-12-28 | 1997-06-24 | Larex A.G. | Apparatus and method for work hardening an endless belt for use in a belt caster |
JP2002147536A (en) * | 2000-11-09 | 2002-05-22 | Dymco:Kk | Metallic endless timing belt and producing method thereof |
AT512972B1 (en) * | 2012-06-04 | 2014-06-15 | Berndorf Band Gmbh | Endless belt with an annular band body |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE386777C (en) * | 1917-07-06 | 1923-12-15 | William Clayton Coryell | Production of endless metal belts |
FR2082688A5 (en) * | 1968-03-14 | 1971-12-10 | Polakowski Natalis | |
FR2124381A1 (en) * | 1971-02-03 | 1972-09-22 | Honeywell Inc | Endless strip rolling machine - with three coplanar rolls |
NL7603791A (en) * | 1976-04-09 | 1976-08-31 | Doornes Transmissie Bv | Producing end-less metal belt - by deep-drawing cylindrical cup-shape from sheet, followed by cutting off annular section |
FR2354152A1 (en) * | 1976-06-08 | 1978-01-06 | Michelin & Cie | METHOD FOR MANUFACTURING BY LAMINATION A STEEL TAPE, AND TAPE RESULTING FROM THIS PROCESS |
FR2395793A1 (en) * | 1977-06-28 | 1979-01-26 | Volvo Car Bv | Method and device for forming endless metal belts from blanks in tubular material |
FR2513267A1 (en) * | 1981-09-18 | 1983-03-25 | Nippon Steel Corp | METHOD OF MANUFACTURING COLD LAMINATED STEEL TOLES AND STRIPES WITH DEEP STRETCHING |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH509265A (en) * | 1967-01-04 | 1971-06-30 | Spofa Vereinigte Pharma Werke | Process for the preparation of new trimethylhydroquinone derivatives |
NL7316956A (en) * | 1973-12-11 | 1975-06-13 | Varitrac A G In Gruendung | MANUFACTURE OF PACKAGE DRIVE TIRES. |
-
1983
- 1983-05-04 NL NL8301587A patent/NL8301587A/en not_active Application Discontinuation
-
1984
- 1984-05-02 DE DE19843416260 patent/DE3416260A1/en active Granted
- 1984-05-03 FR FR8407012A patent/FR2545391B1/en not_active Expired
- 1984-05-04 JP JP9005384A patent/JPS6087905A/en active Pending
- 1984-05-04 GB GB08411467A patent/GB2139923B/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE386777C (en) * | 1917-07-06 | 1923-12-15 | William Clayton Coryell | Production of endless metal belts |
FR2082688A5 (en) * | 1968-03-14 | 1971-12-10 | Polakowski Natalis | |
FR2124381A1 (en) * | 1971-02-03 | 1972-09-22 | Honeywell Inc | Endless strip rolling machine - with three coplanar rolls |
NL7603791A (en) * | 1976-04-09 | 1976-08-31 | Doornes Transmissie Bv | Producing end-less metal belt - by deep-drawing cylindrical cup-shape from sheet, followed by cutting off annular section |
FR2354152A1 (en) * | 1976-06-08 | 1978-01-06 | Michelin & Cie | METHOD FOR MANUFACTURING BY LAMINATION A STEEL TAPE, AND TAPE RESULTING FROM THIS PROCESS |
FR2395793A1 (en) * | 1977-06-28 | 1979-01-26 | Volvo Car Bv | Method and device for forming endless metal belts from blanks in tubular material |
FR2513267A1 (en) * | 1981-09-18 | 1983-03-25 | Nippon Steel Corp | METHOD OF MANUFACTURING COLD LAMINATED STEEL TOLES AND STRIPES WITH DEEP STRETCHING |
Non-Patent Citations (1)
Title |
---|
TAYLOR LYMAN: "Metals Handbook", vol. 1, 8iem edition, 1961,p ages 62, 334,335, "Properties and selection of metals"; American Society of metals, Metals Park, Ohio, US; * |
Also Published As
Publication number | Publication date |
---|---|
GB2139923A (en) | 1984-11-21 |
GB2139923B (en) | 1985-11-20 |
FR2545391B1 (en) | 1988-04-08 |
DE3416260A1 (en) | 1984-11-08 |
DE3416260C2 (en) | 1988-03-24 |
JPS6087905A (en) | 1985-05-17 |
NL8301587A (en) | 1984-12-03 |
GB8411467D0 (en) | 1984-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |