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Wear studies in the shearing process by means of irradiated tools; Etudes d'usure dans les operations de cisaillement, au moyen d'outils irradies; Issledovaniya problemy iznosa v protsesse skalyvaniya posredstvom obluchennykh instrumentov; Estudios de desgaste en las operaciones de cizallamiento, realizados con ayuda de herramientas irradiadas

Abstract

Tool wear in the shearing of sheet metals was studied with punches and dies of high-speed steel irradiated in an atomic pile. Circular discs 10 mm in diameter were punched from 0.5-mm-thick low-carbon steel, stainless steel and silicon steel in dry and lubricated states. After punching, the radioactivity of the discs and the holes was measured. When the radioactive die was replaced by a non-active one, little radioactivity was detected on the discs, while the radioactivity of the holes scarcely varied. This proved that the wear of the die can be found from the radioactivity of the discs, and that of the punch from the radioactivity of the holes. By this method the wear of the punch and die was followed by using different lubricants and sheet metals with the following results: (1) At the beginning of punching, the wear rates of both punch and die are very large but rapidly decrease, becoming eventually stationary after punching about four to five hundred pieces. (2) The wear rate of the punch is about 20% greater than that of the die. (3) Lubricants with extreme pressure additives, such as chlorine, phosphorus or sulphur, reduce tool wear, while refined mineral oils give little  More>>
Authors:
Sata, Toshio; Abe, Kunio; Nakajima, Kiyoshi [1] 
  1. Institute of Physical and Chemical Research, Komagome, Bunkyo-Ku, Tokyo (Japan)
Publication Date:
Jan 15, 1962
Product Type:
Conference
Resource Relation:
Conference: Conference on the Use of Radioisotopes in the Physical Sciences and Industry, Copenhagen (Denmark), 6-17 Sep 1960; Other Information: 8 figs, 2 tabs; Related Information: In: Radioisotopes in the Physical Sciences and Industry. Proceedings of the Conference on the Use of Radioisotopes in the Physical Sciences and Industry. V. 1| 556 p.
Subject:
36 MATERIALS SCIENCE; CARBON STEELS; CHLORINE; LUBRICANTS; METALS; PHOSPHORUS; RADIOACTIVITY; SHEETS; SILICON; STAINLESS STEELS; SULFUR
OSTI ID:
22025643
Research Organizations:
International Atomic Energy Agency, Vienna (Austria); United Nations Educational, Scientific and Cultural Organization, Paris (France)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA12N1622112936
Submitting Site:
INIS
Size:
page(s) 387-396
Announcement Date:
Jan 16, 2013

Citation Formats

Sata, Toshio, Abe, Kunio, and Nakajima, Kiyoshi. Wear studies in the shearing process by means of irradiated tools; Etudes d'usure dans les operations de cisaillement, au moyen d'outils irradies; Issledovaniya problemy iznosa v protsesse skalyvaniya posredstvom obluchennykh instrumentov; Estudios de desgaste en las operaciones de cizallamiento, realizados con ayuda de herramientas irradiadas. IAEA: N. p., 1962. Web.
Sata, Toshio, Abe, Kunio, & Nakajima, Kiyoshi. Wear studies in the shearing process by means of irradiated tools; Etudes d'usure dans les operations de cisaillement, au moyen d'outils irradies; Issledovaniya problemy iznosa v protsesse skalyvaniya posredstvom obluchennykh instrumentov; Estudios de desgaste en las operaciones de cizallamiento, realizados con ayuda de herramientas irradiadas. IAEA.
Sata, Toshio, Abe, Kunio, and Nakajima, Kiyoshi. 1962. "Wear studies in the shearing process by means of irradiated tools; Etudes d'usure dans les operations de cisaillement, au moyen d'outils irradies; Issledovaniya problemy iznosa v protsesse skalyvaniya posredstvom obluchennykh instrumentov; Estudios de desgaste en las operaciones de cizallamiento, realizados con ayuda de herramientas irradiadas." IAEA.
@misc{etde_22025643,
title = {Wear studies in the shearing process by means of irradiated tools; Etudes d'usure dans les operations de cisaillement, au moyen d'outils irradies; Issledovaniya problemy iznosa v protsesse skalyvaniya posredstvom obluchennykh instrumentov; Estudios de desgaste en las operaciones de cizallamiento, realizados con ayuda de herramientas irradiadas}
author = {Sata, Toshio, Abe, Kunio, and Nakajima, Kiyoshi}
abstractNote = {Tool wear in the shearing of sheet metals was studied with punches and dies of high-speed steel irradiated in an atomic pile. Circular discs 10 mm in diameter were punched from 0.5-mm-thick low-carbon steel, stainless steel and silicon steel in dry and lubricated states. After punching, the radioactivity of the discs and the holes was measured. When the radioactive die was replaced by a non-active one, little radioactivity was detected on the discs, while the radioactivity of the holes scarcely varied. This proved that the wear of the die can be found from the radioactivity of the discs, and that of the punch from the radioactivity of the holes. By this method the wear of the punch and die was followed by using different lubricants and sheet metals with the following results: (1) At the beginning of punching, the wear rates of both punch and die are very large but rapidly decrease, becoming eventually stationary after punching about four to five hundred pieces. (2) The wear rate of the punch is about 20% greater than that of the die. (3) Lubricants with extreme pressure additives, such as chlorine, phosphorus or sulphur, reduce tool wear, while refined mineral oils give little improvement. (4) The heaviest tool wear occurs when punching the harder sheet metals. Tool wear for stainless steel is about three times, and for silicon steel about six times, as large as for low-carbon steel. (author) [French] On a etudie l'usure des outils utilises pour le cisaillement de plaques de metal en se servant de poincons et de matrices en acier rapide irradies dans line pile atomique. Des pastilles de 10 mm de diametre ont ete decoupees, a sec et avec lubrifiants, dans des toles de 0,5 mm d'epaisseur d'acier pauvre en carbone, d'acier inoxydable et d'acier riche en silicium. Apres le poinconnage, on a mesure la radioactivite des pastilles et des trous. Lorsqu'on remplacait la matrice radioactive par une autre non radioactive, on ne detectait guere de radioactivite sur les pastilles, tandis que la radioactivite des trous variait a peine. Cela montre que l'usure de la matrice peut etre mesuree d'apres la radioactivite des pastilles, et celle du poincon d'apres la radioactivite des trous. On a eu recours a cette methode pour suivre le processus d'usure du poincon et de la matrice en employant differents lubrifiants et differentes toles, ce qui a permis de faire les constatations suivantes: 1. Au debut du poinconnage, le taux d'usure du poincon et celui de la matrice sont tres eleves mais diminuent rapidement, pour devenir finalement stationnaires apres decoupage d'environ 4 a 500 pieces. 2. L'usure du poincon est d'environ 20 % plus forte que celle de la matrice. 3. Les lubrifiants contenant des additifs qui resistent aux pressions extremes, tels que le chlore, le phosphore ou le soufre, reduisent l'usure des outils, tandis que les huiles minerales raffinees n'apportent guere d'amelioration. 4. La plus forte usure des outils se produit lors du poinconnage des toles les plus dures. Cette usure est environ trois fois plus forte pour l'acier inoxydable et environ six fois plus forte pour l'acier riche en silicium que pour l'acier pauvre en carbone. (author) [Spanish] Se ha estudiado el desgaste de las herramientas utilizadas en el corte de laminas metalicas con punzones y matrices de acero rapido irradiados en un reactor. Se recortaron a punzon discos de 10 mm de diametro en laminas de acero pobre en carbono, acero inoxidable y acero al silicio de 0,5 mm de espesor en estado seco y lubricado. Despues del punzonamiento, se midio la radiactividad de los discos y de los orificios. Al reemplazar la matriz radiactiva por otra no irradiada, se detecto escasa actividad en los discos, mientras que la radiactividad de los orificios apenas sufrio variacion. Ello demuestra que el desgaste de la matriz y del punzon pueden medirse en funcion de la radiactividad de los discos y de los orificios, respectivamente. Con ayuda de este metodo, se estudio el desgaste del punzon y de la matriz al emplear lubricantes y laminas metalicas de distintos tipos, obteniendose los resultados siguientes: 1) Al comienzo de la operacion, los indices de desgaste del punzon y de la matriz son muy elevados, pero disminuyen rapidamente, para estabilizarse despues de haber recortado entre 400 y 500 piezas; 2) El desgaste del punzon supera en un 20 por ciento al de la matriz; 3) Los lubricantes con aditivos especiales para altas presiones (compuestos de cloro, fosforo o azufre) reducen el desgaste de las herramientas, mientras que los aceites minerales refinados ejercen poco efecto; 4) Cuanto mas duro es el metal trabajado, tanto mayor es el desgaste de las herramientas; el desgaste al punzonar acero inoxidable y acero al silicio es tres y seis veces superior, respectivamente, al observado en el caso del acero pobre en carbono. (author) [Russian] Iznos instrumenta v protsesse skalyvaniya metallicheskogo lista issledovalsya s pomoshch'yu probojnikov i stal'nykh puansonov s bol'shoj skorost'yu shtampovki, obluchennykh v yadernom reaktore. Kruglye diski diametrom 10 mm shtampuyutsya iz stal'nogo lista s nizkim soderzhaniem ugleroda tolshchinoj 0,5 mm, nerzhaveyushchej stali i kremnievoj stali, sukhim sposobom i so smazkoj. Posle shtampovki izmeryalas' radioaktivnost' diskov otverstij. Kogda radioaktivnyj puanson zamenyalsya neradioaktivnym, to na diskakh obnaruzhivalas' neznachitel'naya radioaktivnost' v to vremya, kak radioaktivnost' v otverstiyakh edva izmenyalas'. EHto pokazalo, chto iznos puansona mozhno opredelit' po radioaktivnosti diskov, a iznos probojnikov - po radioaktivnosti otverstij. S pomoshch'yu ehtogo metoda iznos probojnikov i puansonov proveryalsya pri ispol'zovanii razlichnykh vidov smazochnogo materiala i metallicheskogo lista i byli polucheny sleduyushchie rezul'taty: 1) V nachale shtampovki skorost' iznosa kak probojnika, tak i puansona ochen' bol'shaya, no ona bystro snizhaetsya i stanovitsya, nakonets, postoyannoj posle shtampovki primerno 400-500 detalej. 2) Probojnik iznashivaetsya v bol'shej stepeni, primerno na 20% bol'she, chem puanson. 3) Smazochnye materialy s prisadkoj na predel'noe davlenie, takoj, kak khlor, fosfor ili sera, snizhayut iznos instrumenta, v to vremya kak ochishchennye mineral'nye masla dayut neznachitel'nyj ehffekt. 4) Naibol'shij iznos instrumenta obnaruzhen pri shtampovke bolee tverdykh metallicheskikh listov. Iznos instrumenta pri shtampovke nerzhaveyushchej stali vtroe, a pri shtampovke kremnievoj stali primerno v shest' raz prevyshaet iznos pri shtampovke stali s nizkim soderzhaniem ugleroda. (author)}
place = {IAEA}
year = {1962}
month = {Jan}
}