摘要:
The present invention relates to a method for tempering a clothing wire (1) for processing textile fibres and a plant (100) therefor, wherein the clothing wire (1) has a row of teeth arranged in the longitudinal direction thereof, and wherein the clothing wire (1) is passed through a heating region (11) in a wire running direction in order to come into contact with at least one open flame (10), wherein a quenching bath (12) having a quenching fluid (13) and a subsequent tempering device (14) follow the heating region (11). According to the invention, the clothing wire (1) moving in the wire running direction is washed around by a protective medium (16) in a transfer region (15) between the region of contact with the open flame (10) and entry into the quenching fluid (13).
摘要:
An apparatus for thermally treating and coloring a plurality of curved suture needles. The apparatus includes a conveyer for transferring the plurality of curved suture needles from a source of curved suture needles to a receiver, a housing positioned adjacent the conveyer, the housing having a first end, a second end, and an opening running from the first end to the second end, the opening aligned with the conveyer to enable the plurality of curved suture needles to pass therethrough, a heat source located within the housing for heating the plurality of curved suture needles as the plurality of curved suture needles are transferred by the conveyer from the first end of the housing to the second end of the housing and a system for providing a gas mixture containing a fractional concentration of oxygen to oxidize and colorize the surfaces of the plurality of curved suture needles as the plurality of suture needles pass through the housing. A process for thermally treating and coloring a plurality of curved suture needles to colorize and enhance the stiffness and yield moment of the curved suture needles is also provided.
摘要:
Die Erfindung betrifft ein Verfahren zum Laserstrahlhärten von zu härtenden Bereichen (A) eines Garniturdrahtes (10). Dabei wird der Garniturdraht (10) in einer Förderrichtung durch einen Arbeitsraum (26) bewegt. Im Arbeitsraum (26) wird eine Schutzgasatmosphäre durch das kontinuierliche oder diskontinuierliche Einleiten von Schutzgas (G) erzeugt. Im Arbeitsraum (26) wird ein Laserstrahlfeld (27) gebildet, durch das die zu härtenden Bereiche (A) des Garniturdrahtes (10) bewegt werden. Dabei werden die zu härtenden Bereiche (A) erwärmt. Nach dem Austritt aus dem Laserstrahlfeld (27) kühlen sich die zu härtenden Bereiche (A) ab und werden durch das Durchlaufen dieses Temperaturprofils gehärtet. Das Härten in der Schutzgasatmosphäre im Arbeitsraum (26) verhindert das Bilden von Oxidschichten (Verzunderung) und Anlassfarben.
摘要:
Bei dem erfindungsgemäßen Verfahren durchläuft ein mit Zähnen (15) mit einem Wandabschnitt (23) versehener Draht (11) nacheinander einen ersten Induktor (16) und einen zweiten Induktor (18). Die Induktoren (16,18) arbeiten mit unterschiedlichen Frequenzen und erzeugen unterschiedliche Temperaturen. Der erste Induktor (16) erwärmt insbesondere den nicht zu härtenden Fußabschnitt (17) auf eine hohe Temperatur unterhalb des Austenitisierungstemperaturbereichs. Der zweite Induktor (18) erwärmt den Wandabschnitt (23) der Zähne (15) auf eine noch höhere zweite innerhalb des Austenitisierungstemperaturbereichs liegende Temperatur. Beim Abschrecken ergeben sich definiert gehärtete Zähne gleichbleibend hoher Qualität. Die Erfindung betrifft auch eine Ganzstahlgarnitur mit einem nicht gehärteten Fußabschnitt (17), einer Übergangzone (24) und einem gehärteten Wandabschnitt (23).
摘要:
A hardenable chromium-nickel steel, comprising 0.005 to 0.12% carbon, 9 to 17% chromium, 5 to 12% nickel, at most 3% cobalt, 0.5 to 4% molybdenum, 0.25 to 1.0% silicon, 0.5% to 3.0% manganese, 1 to 3% titanium, 0.25 to 1% vanadium, 0.05 to 0.5% niobium, 0.001 to 0.30% nitrogen, at most 0.5% tantalum, 0.001 to 0.030% sulfur, 0.2 to 2.0% copper, at most 0.5% tungsten, at most 1.5% aluminum, 0.0001 to 0.01% boron, and at most 0.035% phosphorus, remainder iron including impurities resulting from smelting, is suitable in particular as a material for producing wire by drawing in the 3-phase region of α-martensite, ε-martensite, and austenite, in conjunction with a heat treatment. The wire can then be used for objects that have not only a high tensile strength of at least 2000 N/mm 2 but also a magnetic saturation of 200 to 235 Gcm 3 and that must have a high capacity for reversible bending without substantial strain hardening, such as components for instrument construction, surgical needles, valve pins, and dental braces.
摘要:
Systems for bone and spinal stabilization, fixation and repair include intramedullar nails (20, 36, 50, 60, 80, 310, 320, 330, 344), intervertebral cages (125, 130) and prostheses (140). The intramedullar nails, intervertebral cages and prostheses are designed for expansion from a small diameter for insertion into place to a larger diameter which stabilizes, fixates or repairs the bone, and further can be inserted percutaneously.
摘要:
Metallic card clothing is illustrated having sharp metallic points C at tips of teeth (32) formed by punching and thereafter exerting a mechanical force bending metal over at the tips of the teeth (Fig. 12).
摘要:
An apparatus for thermally treating a plurality of curved suture needles. The apparatus includes a conveyer for transferring the plurality of curved suture needles from a source of curved suture needles to a receiver, a housing positioned adjacent the conveyer, the housing having a first end, a second end, and an opening running from the first end to the second end, the opening aligned with the conveyer to enable the plurality of curved suture needles to pass therethrough, and a heat source located within the housing for heating the plurality of curved suture needles as the plurality of curved suture needles are transferred by the conveyer from the first end of the housing to the second end of the housing. Also provided is a process for thermally treating a plurality of curved suture needles to enhance the stiffness and yield moment of the curved suture needles. The curved suture needles so treated have a desirable combination of stiffness, strength and ductility.