EP2996994A1 - Blank mold and neck mold having reduced relative friction - Google Patents

Blank mold and neck mold having reduced relative friction

Info

Publication number
EP2996994A1
EP2996994A1 EP14729397.1A EP14729397A EP2996994A1 EP 2996994 A1 EP2996994 A1 EP 2996994A1 EP 14729397 A EP14729397 A EP 14729397A EP 2996994 A1 EP2996994 A1 EP 2996994A1
Authority
EP
European Patent Office
Prior art keywords
mold
blank
ring
base alloy
blank mold
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.)
Withdrawn
Application number
EP14729397.1A
Other languages
German (de)
French (fr)
Inventor
Cyril ESCURE
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.)
Verallia France SA
Original Assignee
Saint Gobain Emballage SA
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 Saint Gobain Emballage SA filed Critical Saint Gobain Emballage SA
Publication of EP2996994A1 publication Critical patent/EP2996994A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B40/00Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
    • C03B40/02Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it by lubrication; Use of materials as release or lubricating compositions
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B9/00Blowing glass; Production of hollow glass articles
    • C03B9/30Details of blowing glass; Use of materials for the moulds
    • C03B9/48Use of materials for the moulds

Definitions

  • the present invention relates to the industrial manufacture of hollow glass articles such as bottles, jars, flasks ...
  • the step of producing the blank is carried out using different molding elements, in particular a blank mold and a ring mold.
  • the ring mold Upon completion of the roughing, the ring mold is positioned below the blank mold, which has a concave surface called an enclave and forming a jaw with respect to the corresponding convex peripheral surface of the ring mold.
  • the auxiliary means associated with the ring mold from below, in particular the punch block comprising the punch and the sheath (serving to pierce the ring of the blank and thereby initiate the formation of the cavity) apply to the ring mold a pressure upward pushing it against the blank mold. This is a portion of the upper surface of the ring mold, generally a portion relatively remote from the axis of the blank, which is subjected to friction with the blank mold at the opening thereof.
  • This upper surface of the ring mold closest to the axis of the blank has an edge to a few hundredths of a millimeter, of the order of four hundredths of a millimeter, for example, facing each other. below an edge presented by the lower surface of the blank mold.
  • This edge of the blank mold is also the part of its lower surface closest to the axis of roughing.
  • these ridges which do not touch in theory - though this may occur in certain circumstances - are intended to come into contact with the molten glass. They can be made of a nickel base alloy. The objective of the contribution of this alloy is in this case a mechanical reinforcement of the edge to improve its impact resistance.
  • the object of the invention was to reduce the frequency of lubrication of the ring molds, or even to eliminate it.
  • the friction between the blank mold and the ring mold could be reduced, as well as their wear, to a degree that the objective could be achieved.
  • the subject of the invention is an assembly comprising a blank mold and a ring mold intended to cooperate in forming a blank in order to produce a hollow glass article, characterized in that one surface of the blank mold and a surface of the ring mold rubbing one on the other, have a composition reducing the friction between the two molds, and their wear, comprising - a nickel base alloy containing, in% by mass:
  • said one surface of the blank mold and one surface of the ring mold are substantially perpendicular to the axis of said blank, and relatively distant from this axis; said one surface of the blank mold and one surface of the ring mold comprise at least in part at least one of the following solid lubricants, or a mixture of several of them:
  • X is selected from Ca, Mg, Sr, Ba, in particular CaF 2, MgF 2 and BaF 2,
  • X is selected from Sc, Y, La and rare earths
  • MoS 2 molecular weight distribution
  • WS 2 molecular weight distribution
  • CrS molecular weight distribution
  • M Mo, W, Ni, or Cr, for example MoSi 2,
  • X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr, in particular TiB 2, ZrB 2,
  • X and Y are selected from Mo, Cr, Co, Ni, Fe, Mn, V, Ti and Zr, in particular MoCoB or Mo 2 NiB 2
  • X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr;
  • said one surface of the blank mold and one surface of the ring mold comprise at least in part a first nickel base or cobalt base alloy phase and a second phase consisting of a solid lubricant or a mixture of solid lubricants; the mass proportion is then advantageously 60 - 100% for the first phase and 0-40% for the second phase;
  • said one surface of the blank mold and one surface of the ring mold consist at least in part of a coating comprising a nickel base alloy
  • said one surface of the blank mold and one surface of the ring mold consist at least in part of a coating comprising a cobalt base alloy
  • said one surface of the blank mold and one surface of the ring mold comprise at least in part an inlay of solid lubricant.
  • Various deposition techniques are used in the context of the invention to form nickel base or cobalt base alloy coatings. These include flame thermal spraying, plasma spray (HvoF), HVOF (High Velocity Oxy-Fuel), which is means of devices under the trademark Jet Kote®, transferred plasma plasma (PTA for "Plasma Transferred Arc” in English), and cold spray ("cold spray” in English).
  • the thickness of the nickel base or cobalt base alloy coatings is between 10 ⁇ and 10 mm, for example between 30 and 500 ⁇ per HVOF, between 50 ⁇ and 1 mm by plasma thermal spraying, and up to 5 mm by PTA.
  • FIG. 1 is a partial schematic sectional representation of a blank mold in the open position, and a corresponding ring mold, according to the invention
  • FIGS. 2 and 3 describe the coefficients of friction and the volume used for different pairs of friction surfaces, during a dry test
  • a blank mold 1 consisting essentially of cast iron is shown in the open position. It shows the footprint 2 of the body of the blank, a concave lower surface 3 called an enclavure 3 and intended for the interlocking, holding and locking of the ring mold 1 1, essentially made of cast iron or bronze. From it, we see the joint plane 10, the imprint of the ring 12.
  • edges 4 of the blank mold and 14 of the ring mold intended for contact with the molten glass.
  • the edges 4, 14 are frequently made of a nickel base alloy for mechanical reinforcement, to improve the impact resistance.
  • the tool associated with the ring mold January in particular the punch block consisting of the punch and the sleeve, pushes the mold ring 1 1 upwards, against the blank mold 1.
  • the two molds then touch at the level of the upper peripheral surface of the enclavure 3, that is to say the farther from the median vertical axis of the figure (axis of symmetry, axis of the blank).
  • Edges 4, 14 are almost contiguous, but nevertheless 4 percent of a millimeter apart.
  • the contact surfaces 5, 15 of the two molds 1, 1 1 consist of a nickel base alloy containing, in% by mass:
  • the two molds 1, 1 1 are in contact only by their surfaces 5, 15.
  • the nickel base alloy of which they are made reduces their friction and their wear, making it possible to reduce the lubrication frequency of the ring mold, or even remove it.
  • Tribological tests are carried out by reproducing the frictions of the blank mold with respect to the ring mold.
  • the friction surface of the blank mold may be made of cast iron or a friction reducing composition, here represented by the aforementioned nickel base alloy. That of the ring mold can consist of the same materials plus bronze.
  • nickel - nickel, nickel - bronze, nickel - cast iron, cast iron - cast iron and cast iron - bronze were studied.
  • Nickel here means a “nickel base alloy” as described above.
  • the blank mold is replaced by a cylinder 15 mm thick, 50 mm in diameter, having a round hole in the center of diameter 8 mm to fix the cylinder on a door -Sample with a screw
  • the ring mold is replaced by a pellet 5 mm thick and 25 mm in diameter.
  • the cylinders are made of cast iron or cast iron coated with nickel base alloy.
  • the pellets are made of cast iron, bronze or cast iron coated with nickel base alloy. For coated samples, the thickness of the thermally sprayed coating is 1 to 2 mm.
  • the blank mold - ring mold pair is replaced by a cylinder - pellet couple, the cylinder and the pellet can simulate either the blank mold or the ring mold.
  • Tests are conducted with a Cameron - Plint tribometer by reciprocating the cylinder against the pellet.
  • the stroke length of the cylinder is 10 mm
  • the average speed of translation of the cylinder is 225 mm / s, reproducing the opening speed of the blank molds. This speed corresponds to a maximum translation speed of the cylinder of 318.2 mm / s.
  • the assembly is maintained at a temperature of 360 ° C, which is approximately the minimum temperature observed on the top face of the ring mold.
  • a lubricant sold by the Total group is used under the registered trademark Kleenmold® 170, containing, in% by weight, 70 - 80% of oil, 5 - 6% of graphitic carbon, 4 - 5% of sulfur and 20 - 30% of additives.
  • the applied force varies between 100 and 500 N. Most of the tests used a reference pressure of 170 MPa which makes it possible to compare the results. Figures 2 and 3 present the results of the dry tests at the reference pressure of 170 MPa.
  • Figure 2 shows the average coefficients of friction for all pairs of friction surfaces at the reference pressure of 170 MPa.
  • This reference pressure corresponds to different applied forces according to the pairs of friction surfaces, forces indicated on the graph of the figure.
  • Average coefficients of friction that of the Ni - Ni pair is always the lowest and the most favorable.
  • the initial coefficient between 0 and 600 s, 0 and 135 m of translation back and forth of the cylinder
  • the coefficient of friction of other couples does not change much with time.
  • the graph in Figure 3 gives the wear rate on the cylinder.
  • the cast iron - cast iron and cast - bronze tests give the largest wear on the cylinder, the Ni - Ni test the lowest wear.
  • the coefficient of friction is higher than 0.2 very briefly for one test and never for the other.
  • the values for Ni - Ni at the frequency 2 h are the lowest of all the tests.
  • the coefficient of friction in lubricated for the Ni - bronze torque is the second weakest.
  • the coefficient of friction is greater than 0.2 for the majority of the duration of the test.
  • Cast iron - bronze is the only other couple that has seen tests where the coefficient of friction is greater than 0.2 for more than half of the test.
  • the wear rate on the cylinders for the lubricated tests is shown in Figure 5.
  • the wear rate on the cylinder for the Ni-Ni torque is almost zero, while the cast-iron torque shows the maximum wear.
  • the wear is variable, according to the results for cast iron - bronze lubricated at the frequency 2 h, and for cast iron - cast iron lubricated at the frequency 30 min.
  • the amount of fat remains an important factor.
  • the reduction in contact pressure appears to reduce wear on the cylinder for the cast-bronze torque lubricated.
  • the Ni - bronze torque has a relatively high wear rate on the dry cylinder, but in lubricated, its wear rate is lower than all the others, except that of the Ni - Ni couple.
  • Tribaloy® T-400 a coating of 100 ⁇ thick Tribaloy® T-400 by HVOF is deposited on a cylinder as described above using a Jet Kote® device.
  • the mass% composition of Tribaloy® T-400 is as follows:
  • a Cameron - Plint tribometer is used as explained above.
  • the contact pressure with the pellet is constantly 170 MPa.
  • Lubricating at a simulating frequency lubrication every two hours.
  • the coefficient of friction ⁇ and wear are still a little lower than for the pair Ni-Ni (FIG. 5), precisely constantly below 0.25, respectively at 0.04 ⁇ 2 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Lubricants (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

The invention relates to: an assembly including a blank mold and a neck mold which are to engage one another in order to mold a blank with a view to producing a hollow glass article, characterized in that a surface of the blank mold and a surface of the neck mold which rub against one another have a composition that reduces the friction between the two molds, and the wear thereof, including : a nickel alloy and/or a cobalt alloy; an I.S. machine comprising such an assembly; and to a method for producing a hollow glass article using such an assembly.

Description

MOULE EBAUCHEUR ET MOULE DE BAGUE A FROTTEMENT  EBOUCHEUR MOLD AND FRICTION RING MOLD
RELATIF REDUIT  RELATIVE REDUCED
La présente invention a trait à la fabrication industrielle d'articles en verre creux tels que bouteilles, pots, flacons... The present invention relates to the industrial manufacture of hollow glass articles such as bottles, jars, flasks ...
Les articles en verre creux sont fabriqués en deux étapes :  Hollow glass products are manufactured in two stages:
- la réalisation d'une ébauche ;  - the realization of a sketch;
- la transformation de cette ébauche en produit fini (bouteille, pot, flacon,...). - the transformation of this blank into finished product (bottle, jar, bottle, ...).
L'étape de réalisation de l'ébauche est effectuée à l'aide de différents éléments de moulerie, en particulier un moule ébaucheur et un moule de bague. The step of producing the blank is carried out using different molding elements, in particular a blank mold and a ring mold.
A la fin de l'étape de réalisation de l'ébauche, lors de l'ouverture du moule ébaucheur qui libère l'ébauche tenue par le moule de bague, des frottements se produisent entre l'ébaucheur et le moule de bague. Ces frottements peuvent engendrer indirectement des défauts sur les articles produits. Ces défauts, du type « glaçure sous bague » rendent l'article impropre et celui-ci est rejeté, entraînant des pertes de rendements.  At the end of the step of producing the blank, during the opening of the blank mold which releases the blank held by the ring mold, friction occurs between the blank and the ring mold. This friction can indirectly cause defects on the articles produced. These defects, type "ring glaze" make the article unsuitable and it is rejected, resulting in yield losses.
Jusqu'ici, afin de limiter le frottement entre l'ébaucheur et le moule de bague, on utilise une « graisse » (mélange d'hydrocarbures, de graphite et de soufre le plus souvent). A la réalisation de l'ébauche, le moule de bague est positionné en-dessous du moule ébaucheur, qui présente une surface concave appelée enclavure et constituant une mâchoire vis-à-vis de la surface périphérique convexe correspondante du moule de bague. Les moyens auxiliaires associés au moule de bague par le dessous, notamment le bloc poinçon comprenant le poinçon et le fourreau (servant à percer la bague de l'ébauche et en amorcer ainsi la formation de la cavité) appliquent sur le moule de bague une pression ascendante le poussant contre le moule ébaucheur. C'est une partie de la surface supérieure du moule de bague, généralement une partie relativement éloignée de l'axe de l'ébauche, qui est soumise au frottement avec le moule ébaucheur à l'ouverture de celui-ci.  Until now, in order to limit the friction between the blank and the ring mold, a "grease" is used (mixture of hydrocarbons, graphite and sulfur most often). Upon completion of the roughing, the ring mold is positioned below the blank mold, which has a concave surface called an enclave and forming a jaw with respect to the corresponding convex peripheral surface of the ring mold. The auxiliary means associated with the ring mold from below, in particular the punch block comprising the punch and the sheath (serving to pierce the ring of the blank and thereby initiate the formation of the cavity) apply to the ring mold a pressure upward pushing it against the blank mold. This is a portion of the upper surface of the ring mold, generally a portion relatively remote from the axis of the blank, which is subjected to friction with the blank mold at the opening thereof.
La partie de cette surface supérieure du moule de bague la plus proche de l'axe de l'ébauche présente une arête à quelques centièmes de millimètre, de l'ordre de quatre centièmes de millimètre par exemple, en vis-à-vis en-dessous d'une arête présentée par la surface inférieure du moule ébaucheur. Cette arête du moule ébaucheur constitue aussi la partie de sa surface inférieure la plus proche de l'axe de l'ébauche. En d'autres termes, ces arêtes, qui ne se touchent pas en théorie -même si cela peut se produire en certaines circonstances-, sont destinées à entrer en contact avec le verre fondu. Elles peuvent être constituées en un alliage base nickel. L'objectif de l'apport de cet alliage est dans ce cas un renforcement mécanique de l'arête afin d'améliorer sa résistance aux chocs. The portion of this upper surface of the ring mold closest to the axis of the blank has an edge to a few hundredths of a millimeter, of the order of four hundredths of a millimeter, for example, facing each other. below an edge presented by the lower surface of the blank mold. This edge of the blank mold is also the part of its lower surface closest to the axis of roughing. In other words, these ridges, which do not touch in theory - though this may occur in certain circumstances - are intended to come into contact with the molten glass. They can be made of a nickel base alloy. The objective of the contribution of this alloy is in this case a mechanical reinforcement of the edge to improve its impact resistance.
Ce sont donc les parties relativement éloignées de l'axe de l'ébauche de la surface supérieure du moule de bague d'une part, de la surface inférieure du moule ébaucheur d'autre part, qui frottent l'une sur l'autre. Pour réduire ce frottement, on badigeonne de graisse la surface supérieure du moule de bague ; on comprend donc qu'il faut surtout en privilégier à cet égard la partie la plus périphérique, la plus éloignée de l'axe de l'ébauche.  It is thus the parts relatively far from the axis of the blank of the upper surface of the ring mold on the one hand, and the lower surface of the blank mold on the other hand, which rub against one another. To reduce this friction, the upper surface of the ring mold is greased with grease; it is therefore understandable that we must above all privilege in this respect the most peripheral part, the furthest away from the axis of the blank.
L'utilisation de graisse pose de nombreux problèmes :  The use of grease poses many problems:
- environnement, hygiène et sécurité : exposition de l'opérateur qui réalise l'opération de graissage aux brouillards d'huile, au bruit et à la chaleur dans l'environnement machine ;  - environment, health and safety: exposure of the operator who performs the lubrication operation to oil mist, noise and heat in the machine environment;
- sécurité : exposition de l'opérateur à la machine ;  - safety: exposure of the operator to the machine;
- perte de rendement : les sections de fabrication sont arrêtées pendant l'opération de graissage ; de plus, les premières bouteilles fabriquées après graissage sont rebutées ;  - loss of efficiency: the manufacturing sections are stopped during the greasing operation; moreover, the first bottles manufactured after greasing are discarded;
- articles tachés par la graisse.  - articles stained by grease.
L'invention a eu pour objectif de diminuer la fréquence du graissage des moules de bague, voire le supprimer. Le frottement entre le moule ébaucheur et le moule de bague a pu être réduit, ainsi que leur usure, à un degré tel que l'objectif a pu être atteint.  The object of the invention was to reduce the frequency of lubrication of the ring molds, or even to eliminate it. The friction between the blank mold and the ring mold could be reduced, as well as their wear, to a degree that the objective could be achieved.
A cet effet l'invention a pour objet un ensemble comprenant un moule ébaucheur et un moule de bague destinés à coopérer pour le formage d'une ébauche en vue de la réalisation d'un article en verre creux, caractérisé en ce qu'une surface du moule ébaucheur et une surface du moule de bague frottant l'une sur l'autre, ont une composition réduisant le frottement entre les deux moules, et leur usure, comprenant - un alliage base nickel contenant, en % en masse :  For this purpose, the subject of the invention is an assembly comprising a blank mold and a ring mold intended to cooperate in forming a blank in order to produce a hollow glass article, characterized in that one surface of the blank mold and a surface of the ring mold rubbing one on the other, have a composition reducing the friction between the two molds, and their wear, comprising - a nickel base alloy containing, in% by mass:
- Cr : 0 -25  - Cr: 0-25
- C : 0,01 - 1 - W:0-30 - C: 0.01 - 1 - W: 0-30
- Fe:0-6  - Fe: 0-6
- Si : 0- 6  - If: 0-6
- B : 0- 5  - B: 0- 5
- Co:0-10  - Co: 0-10
- Mn :0-2  - Mn: 0-2
- Mo : 0-35  - Mo: 0-35
- Cu : 0 - 4  - Cu: 0 - 4
- Nb:0-5  - Number: 0-5
- Ta : 0-5  - Ta: 0-5
- Ni : solde ; et/ou  - Ni: balance; and or
-un alliage base cobalt contenant, en % en masse:  a cobalt base alloy containing, in% by mass:
- Ni : 0-20  - Ni: 0-20
- Cr : 0 -35  - Cr: 0 -35
- C:0-3  - C: 0-3
- W:0-15  - W: 0-15
- Fe : 0 - 5  - Fe: 0 - 5
- Si : 0-6  - If: 0-6
- B : 0-5  - B: 0-5
- Mn : 0 - 2  - Mn: 0 - 2
- Mo : 0-35  - Mo: 0-35
- Cu : 0 - 6  - Cu: 0 - 6
- Co : solde.  - Co: balance.
Selon d'autres caractéristiques préférées de l'ensemble selon l'invention :  According to other preferred features of the assembly according to the invention:
- lesdites une surface du moule ébaucheur et une surface du moule de bague sont sensiblement perpendiculaires à l'axe de ladite ébauche, et relativement éloignées de cet axe ; - lesdites une surface du moule ébaucheur et une surface du moule de bague comprennent au moins en partie au moins l'un des lubrifiants solides suivants, ou un mélange de plusieurs d'entre eux : said one surface of the blank mold and one surface of the ring mold are substantially perpendicular to the axis of said blank, and relatively distant from this axis; said one surface of the blank mold and one surface of the ring mold comprise at least in part at least one of the following solid lubricants, or a mixture of several of them:
- graphite,  - graphite,
- XF2 où X est choisi parmi Ca, Mg, Sr, Ba, notamment CaF2, MgF2 et BaF2,- XF 2 wherein X is selected from Ca, Mg, Sr, Ba, in particular CaF 2, MgF 2 and BaF 2,
- XF3 où X est choisi parmi Se, Y, La et les terres rares, - XF 3 where X is selected from Sc, Y, La and rare earths,
- BN à structure hexagonale,  - BN with hexagonal structure,
- MoS2 (molybdénite), WS2 (tungsténite), CrS, MoS 2 (molybdenite), WS 2 (tungstenite), CrS,
- X2MoOS3 où X est Co ou Ni, - X 2 MoOS 3 where X is Co or Ni,
- MaSib où M = Mo, W, Ni, ou Cr, par exemple MoSi2, - M a Si b wherein M = Mo, W, Ni, or Cr, for example MoSi 2,
- XaBb où X est Mo, Cr, Co, Ni, Fe, Mn, V, Ti ou Zr, notamment TiB2, ZrB2,- X b B where X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr, in particular TiB 2, ZrB 2,
- XaYbBc où X et Y sont choisis parmi Mo, Cr, Co, Ni, Fe, Mn, V, Ti et Zr, notamment MoCoB ou Mo2NiB2, - X a Y b B c wherein X and Y are selected from Mo, Cr, Co, Ni, Fe, Mn, V, Ti and Zr, in particular MoCoB or Mo 2 NiB 2
- XSiB où X est Mo, Cr, Co, Ni, Fe, Mn, V, Ti ou Zr ;  - XSiB where X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr;
- lesdites une surface du moule ébaucheur et une surface du moule de bague comprennent au moins en partie une première phase d'alliage base nickel ou base cobalt et une seconde phase constituée d'un lubrifiant solide ou d'un mélange de lubrifiants solides; la proportion massique est alors avantageusement de 60 - 100% pour la première phase et de 0-40% pour la seconde phase ;  said one surface of the blank mold and one surface of the ring mold comprise at least in part a first nickel base or cobalt base alloy phase and a second phase consisting of a solid lubricant or a mixture of solid lubricants; the mass proportion is then advantageously 60 - 100% for the first phase and 0-40% for the second phase;
- lesdites une surface du moule ébaucheur et une surface du moule de bague sont constituées au moins en partie d'un revêtement comprenant un alliage base nickel;  said one surface of the blank mold and one surface of the ring mold consist at least in part of a coating comprising a nickel base alloy;
- lesdites une surface du moule ébaucheur et une surface du moule de bague sont constituées au moins en partie d'un revêtement comprenant un alliage base cobalt;  said one surface of the blank mold and one surface of the ring mold consist at least in part of a coating comprising a cobalt base alloy;
- lesdites une surface du moule ébaucheur et une surface du moule de bague comportent au moins en partie une incrustation de lubrifiant solide.  said one surface of the blank mold and one surface of the ring mold comprise at least in part an inlay of solid lubricant.
Différentes techniques de dépôt sont utilisées dans le cadre de l'invention pour former les revêtements d'alliage base nickel ou base cobalt. Citons la projection thermique à la flamme, la projection thermique au plasma (en anglais « plasma spray »), HVOF (« High Velocity Oxy-Fuel » en anglais), notamment mis en œuvre au moyen de dispositifs sous la marque enregistrée Jet Kote®, plasma d'arc transféré (PTA pour « Plasma Transferred Arc » en anglais), et projection à froid (« cold spray » en anglais). Various deposition techniques are used in the context of the invention to form nickel base or cobalt base alloy coatings. These include flame thermal spraying, plasma spray (HvoF), HVOF (High Velocity Oxy-Fuel), which is means of devices under the trademark Jet Kote®, transferred plasma plasma (PTA for "Plasma Transferred Arc" in English), and cold spray ("cold spray" in English).
L'épaisseur des revêtements d'alliage base nickel ou base cobalt est comprise entre 10 μηη et 10 mm, par exemple entre 30 et 500 μηη par HVOF, entre 50 μηη et 1 mm par projection thermique au plasma, et jusqu'à 5 mm par PTA.  The thickness of the nickel base or cobalt base alloy coatings is between 10 μηη and 10 mm, for example between 30 and 500 μηη per HVOF, between 50 μηη and 1 mm by plasma thermal spraying, and up to 5 mm by PTA.
D'autres objets de l'invention consistent en :  Other objects of the invention consist of:
- une machine I.S. (Individual Section) dont une section au moins comporte au moins un ensemble tel que décrit précédemment ;  - an I.S. machine (Individual Section) of which at least one section comprises at least one assembly as previously described;
- un procédé de fabrication d'un article en verre creux mettant en œuvre au moins un ensemble tel que décrit précédemment.  - A method of manufacturing a hollow glass article implementing at least one set as described above.
L'invention est maintenant illustrée par l'exemple de réalisation suivant, décrit en référence aux dessins annexés dans lesquels :  The invention is now illustrated by the following example embodiment, described with reference to the accompanying drawings in which:
- la figure 1 est une représentation schématique partielle en coupe d'un moule ébaucheur en position d'ouverture, et d'un moule de bague correspondant, conformes à l'invention ;  - Figure 1 is a partial schematic sectional representation of a blank mold in the open position, and a corresponding ring mold, according to the invention;
- les figures 2 et 3 décrivent les coefficients de frottement et le volume usé pour différents couples de surfaces de frottement, au cours d'un essai à sec ;  FIGS. 2 and 3 describe the coefficients of friction and the volume used for different pairs of friction surfaces, during a dry test;
- les figures 4 et 5 décrivent les coefficients de frottement et le volume usé pour différents couples de surfaces de frottement, au cours d'un essai lubrifié. - Figures 4 and 5 describe the coefficients of friction and the volume used for different pairs of friction surfaces, during a lubricated test.
En référence à la figure 1 , un moule ébaucheur 1 essentiellement constitué de fonte est représenté en position d'ouverture. On y voit l'empreinte 2 du corps de l'ébauche, une surface inférieure concave 3 appelée enclavure 3 et destinée à l'emboîtement, maintien et blocage du moule de bague 1 1 , essentiellement constitué de fonte ou bronze. De celui-ci, on voit le plan de joint 10, l'empreinte de la bague 12. Referring to Figure 1, a blank mold 1 consisting essentially of cast iron is shown in the open position. It shows the footprint 2 of the body of the blank, a concave lower surface 3 called an enclavure 3 and intended for the interlocking, holding and locking of the ring mold 1 1, essentially made of cast iron or bronze. From it, we see the joint plane 10, the imprint of the ring 12.
On distingue aussi les arêtes 4 du moule ébaucheur et 14 du moule de bague, destinées à un contact avec le verre fondu. Les arêtes 4, 14 sont fréquemment constituées d'un alliage base nickel pour leur renforcement mécanique, afin d'en améliorer la résistance aux chocs.  We also distinguish the edges 4 of the blank mold and 14 of the ring mold, intended for contact with the molten glass. The edges 4, 14 are frequently made of a nickel base alloy for mechanical reinforcement, to improve the impact resistance.
Lorsque le moule ébaucheur 1 se ferme sur le moule de bague 1 1 , avant de recevoir une nouvelle paraison de verre fondu, l'outillage associé au moule de bague 1 1 , notamment le bloc poinçon constitué du poinçon et du fourreau, pousse le moule de bague 1 1 vers le haut, contre le moule ébaucheur 1 . Les deux moules se touchent alors au niveau de la surface supérieure périphérique de l'enclavure 3, c'est-à-dire la plus éloignée de l'axe vertical médian de la figure (axe de symétrie, axe de l'ébauche). Les arêtes 4, 14 sont presque jointives, mais néanmoins distantes de 4 centièmes de millimètres. When the blank mold 1 closes on the ring mold January 1, before receiving a new parison of molten glass, the tool associated with the ring mold January 1, in particular the punch block consisting of the punch and the sleeve, pushes the mold ring 1 1 upwards, against the blank mold 1. The two molds then touch at the level of the upper peripheral surface of the enclavure 3, that is to say the farther from the median vertical axis of the figure (axis of symmetry, axis of the blank). Edges 4, 14 are almost contiguous, but nevertheless 4 percent of a millimeter apart.
Les surfaces de contact 5, 15 des deux moules 1 , 1 1 sont constituées d'un alliage base nickel contenant, en % en masse :  The contact surfaces 5, 15 of the two molds 1, 1 1 consist of a nickel base alloy containing, in% by mass:
- C : 0,3  - C: 0.3
- B : 1 ,2  - B: 1, 2
- Si : 3,7  - If: 3,7
- Fe: 3,0  - Fe: 3.0
- Cr : 7,0  - Cr: 7.0
- Ni : solde.  - Ni: balance.
A l'ouverture du moule ébaucheur 1 , les deux moules 1 , 1 1 ne sont en contact que par leurs surfaces 5, 15. L'alliage base nickel dont celles-ci sont constituées réduit leur frottement et leur usure, permettant de réduire la fréquence de graissage du moule de bague, voire de le supprimer.  At the opening of the blank mold 1, the two molds 1, 1 1 are in contact only by their surfaces 5, 15. The nickel base alloy of which they are made reduces their friction and their wear, making it possible to reduce the lubrication frequency of the ring mold, or even remove it.
On effectue des essais tribologiques en reproduisant les frottements du moule ébaucheur vis-à-vis du moule de bague. La surface frottante du moule ébaucheur peut être constituée de fonte ou d'une composition réduisant les frottements, représentée ici par l'alliage base nickel précité. Celle du moule de bague peut être constituée des mêmes matériaux plus le bronze. On étudie cinq couples de surfaces frottantes ébaucheur - moule de bague: nickel - nickel, nickel - bronze, nickel - fonte, fonte - fonte et fonte - bronze.  Tribological tests are carried out by reproducing the frictions of the blank mold with respect to the ring mold. The friction surface of the blank mold may be made of cast iron or a friction reducing composition, here represented by the aforementioned nickel base alloy. That of the ring mold can consist of the same materials plus bronze. We study five pairs of ring forming surfaces: nickel - nickel, nickel - bronze, nickel - cast iron, cast iron - cast iron and cast iron - bronze.
« Nickel » désigne ici un « alliage base Nickel » tel que décrit ci-dessus.  "Nickel" here means a "nickel base alloy" as described above.
Alors que la définition classique du bronze est : alliage de cuivre (Cu) et d'étain (Sn), on désigne ici par « bronze » un alliage cupro-nickel-aluminium dans les proportions suivantes concernant les moules de bague :  Whereas the classical definition of bronze is copper (Cu) and tin (Sn) alloy, here is meant by "bronze" a cupro-nickel-aluminum alloy in the following proportions concerning the ring molds:
- Ni 10 - 16  - Ni 10 - 16
- Al 7 - 10  - Al 7 - 10
- Zn 9 - 12  - Zn 9 - 12
- Fe < 1  - Fe <1
- Pb < 0.1  - Pb <0.1
- Sn < 0.1  - Sn <0.1
- Cu solde Pour reproduire le frottement du moule ébaucheur et du moule de bague, le moule ébaucheur est remplacé par un cylindre de 15 mm d'épaisseur, 50 mm de diamètre, ayant un trou rond au centre de diamètre 8 mm pour fixer le cylindre sur un porte-échantillon avec une vis, et le moule de bague est remplacé par une pastille de 5 mm d'épaisseur et 25 mm de diamètre. Les cylindres sont en fonte ou en fonte revêtue d'alliage base nickel. Les pastilles sont en fonte, en bronze ou en fonte revêtue d'alliage base nickel. Pour les échantillons revêtus, l'épaisseur du revêtement déposé par projection thermique est de 1 à 2 mm. Bien que le couple moule ébaucheur - moule de bague soit remplacé par un couple cylindre - pastille, le cylindre et la pastille peuvent simuler indifféremment le moule ébaucheur ou le moule de bague. - Cu balance To reproduce the friction of the blank mold and the ring mold, the blank mold is replaced by a cylinder 15 mm thick, 50 mm in diameter, having a round hole in the center of diameter 8 mm to fix the cylinder on a door -Sample with a screw, and the ring mold is replaced by a pellet 5 mm thick and 25 mm in diameter. The cylinders are made of cast iron or cast iron coated with nickel base alloy. The pellets are made of cast iron, bronze or cast iron coated with nickel base alloy. For coated samples, the thickness of the thermally sprayed coating is 1 to 2 mm. Although the blank mold - ring mold pair is replaced by a cylinder - pellet couple, the cylinder and the pellet can simulate either the blank mold or the ring mold.
On réalise des essais avec un tribomètre Cameron - Plint en appliquant un mouvement de va - et - vient du cylindre contre la pastille. La longueur de course du cylindre est de 10 mm, la vitesse de translation moyenne du cylindre est de 225 mm/s, reproduisant la vitesse d'ouverture des moules ébaucheurs. Cette vitesse correspond à une vitesse de translation maximale du cylindre de 318, 2 mm/s.  Tests are conducted with a Cameron - Plint tribometer by reciprocating the cylinder against the pellet. The stroke length of the cylinder is 10 mm, the average speed of translation of the cylinder is 225 mm / s, reproducing the opening speed of the blank molds. This speed corresponds to a maximum translation speed of the cylinder of 318.2 mm / s.
L'assemblage est maintenu à une température de 360°C, qui est approximativement la température minimale observée sur la face supérieure sur moule de bague.  The assembly is maintained at a temperature of 360 ° C, which is approximately the minimum temperature observed on the top face of the ring mold.
On effectue des essais à sec et des essais lubrifiés.  Dry tests and lubricated tests are carried out.
Quand une lubrification est effectuée, on emploie un lubrifiant commercialisé par le groupe Total sous la marque enregistrée Kleenmold® 170, contenant, en % en masse, 70 - 80 % de pétrole, 5 - 6 % de carbone graphitique, 4 - 5 % de soufre et 20 - 30 % d'additifs.  When lubrication is carried out, a lubricant sold by the Total group is used under the registered trademark Kleenmold® 170, containing, in% by weight, 70 - 80% of oil, 5 - 6% of graphitic carbon, 4 - 5% of sulfur and 20 - 30% of additives.
La force appliquée varie entre 100 et 500 N. La plupart des essais ont utilisé une pression de référence de 170 MPa qui permet de comparer les résultats. Les figures 2 et 3 présentent les résultats des essais à sec à la pression de référence de 170 MPa.  The applied force varies between 100 and 500 N. Most of the tests used a reference pressure of 170 MPa which makes it possible to compare the results. Figures 2 and 3 present the results of the dry tests at the reference pressure of 170 MPa.
La figure 2 présente les coefficients de frottement moyens pour tous les couples de surfaces frottantes à la pression de référence de 170 MPa. Cette pression de référence correspond à des forces appliquées différentes selon les couples de surfaces frottantes, forces indiquées sur le graphe de la figure. Des coefficients de frottement moyens, celui du couple Ni - Ni est toujours le plus bas et le plus favorable. Pour le couple Ni - bronze, le coefficient initial (entre 0 et 600 s, 0 et 135 m de translation va-et-vient du cylindre) est le plus élevé, puis décroit. Le coefficient de frottement des autres couples n'évolue pas beaucoup avec le temps. Le graphe en figure 3 donne le taux d'usure sur le cylindre. Les essais fonte - fonte et fonte - bronze donnent l'usure la plus importante sur le cylindre, l'essai Ni - Ni l'usure la plus faible. Figure 2 shows the average coefficients of friction for all pairs of friction surfaces at the reference pressure of 170 MPa. This reference pressure corresponds to different applied forces according to the pairs of friction surfaces, forces indicated on the graph of the figure. Average coefficients of friction, that of the Ni - Ni pair is always the lowest and the most favorable. For the Ni - bronze pair, the initial coefficient (between 0 and 600 s, 0 and 135 m of translation back and forth of the cylinder) is the highest, then decreases. The coefficient of friction of other couples does not change much with time. The graph in Figure 3 gives the wear rate on the cylinder. The cast iron - cast iron and cast - bronze tests give the largest wear on the cylinder, the Ni - Ni test the lowest wear.
Le pourcentage de l'essai où le coefficient de frottement est supérieur à 0,2 pour chaque essai lubrifié est présenté sur la figure 4. Deux essais lubrifiés à 100 N ont été effectués pour le couple fonte-bronze pour lequel cette force semblait être pertinente à sec. Les autres essais sont réalisés avec une lubrification à une fréquence simulant un graissage toutes les deux heures, respectivement toutes les trente minutes, en conditions industrielles, et à la pression de référence de 170 MPa.  The percentage of the test where the coefficient of friction is greater than 0.2 for each lubricated test is shown in Figure 4. Two tests lubricated at 100 N were performed for the cast-bronze pair for which this strength seemed to be relevant dried up. The other tests are carried out with lubrication at a frequency simulating a lubrication every two hours, respectively every thirty minutes, under industrial conditions, and at the reference pressure of 170 MPa.
Pour le couple Ni - Ni à la fréquence 30 min, le coefficient de frottement est monté plus haut que 0,2 très brièvement pour un essai et jamais pour l'autre. Les valeurs pour Ni - Ni à la fréquence 2 h sont les plus basses de tous les essais. Malgré son frottement sévère à sec, le coefficient de frottement en lubrifié pour le couple Ni - bronze est le deuxième plus faible. Pour le couple fonte - fonte, le coefficient de frottement est supérieur à 0,2 pour la majorité de la durée de l'essai. Fonte - bronze est le seul autre couple qui a vu des essais où le coefficient de frottement est supérieur à 0,2 pour plus que la moitié de l'essai.  For the Ni - Ni torque at 30 min, the coefficient of friction is higher than 0.2 very briefly for one test and never for the other. The values for Ni - Ni at the frequency 2 h are the lowest of all the tests. Despite its severe dry friction, the coefficient of friction in lubricated for the Ni - bronze torque is the second weakest. For the cast iron cast iron, the coefficient of friction is greater than 0.2 for the majority of the duration of the test. Cast iron - bronze is the only other couple that has seen tests where the coefficient of friction is greater than 0.2 for more than half of the test.
Le taux d'usure sur les cylindres pour les essais lubrifiés est représenté en figure 5. Le taux d'usure sur le cylindre pour le couple Ni - Ni est presque nul, tandis que le couple fonte - fonte présente l'usure maximale. L'usure est variable, selon les résultats pour fonte - bronze lubrifié à la fréquence 2 h, et pour fonte - fonte lubrifié à la fréquence 30 min. La quantité de graisse reste un facteur important. La diminution de la pression de contact semble réduire l'usure sur le cylindre pour le couple fonte - bronze lubrifié. Le couple Ni - bronze possède un taux d'usure relativement haut sur le cylindre à sec, mais en lubrifié, son taux d'usure est inférieur à tous les autres, sauf celui du couple Ni - Ni.  The wear rate on the cylinders for the lubricated tests is shown in Figure 5. The wear rate on the cylinder for the Ni-Ni torque is almost zero, while the cast-iron torque shows the maximum wear. The wear is variable, according to the results for cast iron - bronze lubricated at the frequency 2 h, and for cast iron - cast iron lubricated at the frequency 30 min. The amount of fat remains an important factor. The reduction in contact pressure appears to reduce wear on the cylinder for the cast-bronze torque lubricated. The Ni - bronze torque has a relatively high wear rate on the dry cylinder, but in lubricated, its wear rate is lower than all the others, except that of the Ni - Ni couple.
Dans un autre essai, on dépose sur un cylindre comme décrit précédemment un revêtement de 100 μηη d'épaisseur de Tribaloy® T-400 par HVOF au moyen d'un dispositif Jet Kote®. La composition en % en masse du Tribaloy® T-400 est la suivante :  In another test, a coating of 100 μηη thick Tribaloy® T-400 by HVOF is deposited on a cylinder as described above using a Jet Kote® device. The mass% composition of Tribaloy® T-400 is as follows:
Ni : au plus 1 ,5  Ni: at most 1, 5
- Cr : 8,5  - Cr: 8.5
- C : au plus 0,08  - C: not more than 0.08
Fe : au plus 5 - Si : 2,6 Fe: not more than 5 - If: 2.6
- Mo : 29  - Mo: 29
Co : solde.  Co: balance.
On utilise un tribomètre Cameron - Plint comme expliqué ci-dessus. La pression de contact avec la pastille est constamment de 170 MPa. On lubrifie à une fréquence simulant un graissage toutes les deux heures.  A Cameron - Plint tribometer is used as explained above. The contact pressure with the pellet is constantly 170 MPa. Lubricating at a simulating frequency lubrication every two hours.
Vis-à-vis d'une pastille en alliage base nickel de composition précisée plus haut dans l'exemple, le coefficient de frottement μ et l'usure (volume usé du cylindre/distance) sont encore un peu plus faibles que pour le couple Ni-Ni (Fig 5), précisément constamment inférieur à 0,25, respectivement à 0,04 μηη2. With respect to a nickel base alloy pad of composition specified above in the example, the coefficient of friction μ and wear (used volume of the cylinder / distance) are still a little lower than for the pair Ni-Ni (FIG. 5), precisely constantly below 0.25, respectively at 0.04 μηη 2 .

Claims

REVENDICATIONS
1. Ensemble comprenant un moule ébaucheur et un moule de bague destinés à coopérer pour le formage d'une ébauche en vue de la réalisation d'un article en verre creux, caractérisé en ce qu'une surface du moule ébaucheur et une surface du moule de bague frottant l'une sur l'autre, ont une composition réduisant le frottement entre les deux moules, et leur usure, comprenant : An assembly comprising a blank mold and a ring mold for cooperating for forming a blank for the production of a hollow glass article, characterized in that a surface of the blank mold and a surface of the mold rubbing ring on one another, have a composition reducing the friction between the two molds, and their wear, comprising:
- un alliage base nickel contenant, en % en masse :  a nickel base alloy containing, in% by mass:
- Cr:0-25  - Cr: 0-25
- C: 0,01 -1  - C: 0.01 -1
- W:0-30  - W: 0-30
- Fe:0-6  - Fe: 0-6
- Si : 0- 6  - If: 0-6
- B : 0- 5  - B: 0- 5
- Co:0-10  - Co: 0-10
- Mn :0-2  - Mn: 0-2
- Mo : 0-35  - Mo: 0-35
- Cu : 0 - 4  - Cu: 0 - 4
- Nb:0-5  - Number: 0-5
- Ta : 0 - 5  - Ta: 0 - 5
- Ni : solde ; et/ou  - Ni: balance; and or
- un alliage base cobalt contenant, en % en masse :  a cobalt base alloy containing, in% by weight:
- Ni : 0-20  - Ni: 0-20
- Cr : 0 -35  - Cr: 0 -35
- C:0-3  - C: 0-3
- W:0-15  - W: 0-15
- Fe : 0 - 5  - Fe: 0 - 5
- Si : 0-6 - B : 0 - 5 - If: 0-6 - B: 0 - 5
- Mn : 0 - 2  - Mn: 0 - 2
- Mo : 0-35  - Mo: 0-35
- Cu : 0 - 6  - Cu: 0 - 6
- Co : solde.  - Co: balance.
Ensemble selon la revendication 1 , caractérisé en ce que lesdites une surface du moule ébaucheur et une surface du moule de bague sont sensiblement perpendiculaires à l'axe de ladite ébauche, et relativement éloignées de cet axe. Ensemble selon l'une des revendications précédentes, caractérisé en ce que lesdites une surface du moule ébaucheur et une surface du moule de bague comprennent au moins en partie au moins l'un des lubrifiants solides suivants, ou un mélange de plusieurs d'entre eux :  Assembly according to claim 1, characterized in that said one surface of the blank mold and one surface of the ring mold are substantially perpendicular to the axis of said blank, and relatively distant from this axis. Assembly according to one of the preceding claims, characterized in that said one surface of the blank mold and one surface of the ring mold comprise at least in part at least one of the following solid lubricants, or a mixture of several of them :
- graphite,  - graphite,
- XF2 où X est choisi parmi Ca, Mg, Sr, Ba, notamment CaF2, MgF2 et BaF2, - XF3 où X est choisi parmi Se, Y, La et les terres rares, - XF 2 wherein X is selected from Ca, Mg, Sr, Ba, in particular CaF 2, MgF 2 and BaF 2, - XF 3 wherein X is selected from Se, Y, La and the rare earths,
- BN à structure hexagonale,  - BN with hexagonal structure,
- MoS2 (molybdénite), WS2 (tungsténite), CrS, MoS 2 (molybdenite), WS 2 (tungstenite), CrS,
- X2MoOS3 où X est Co ou Ni, - X 2 MoOS 3 where X is Co or Ni,
- MaSib où M = Mo, W, Ni, ou Cr, par exemple MoSi2, - M a Si b wherein M = Mo, W, Ni, or Cr, for example MoSi 2,
- XaBb où X est Mo, Cr, Co, Ni, Fe, Mn, V, Ti ou Zr, notamment TiB2, ZrB2,- X b B where X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr, in particular TiB 2, ZrB 2,
- XaYbBc où X et Y sont choisis parmi Mo, Cr, Co, Ni, Fe, Mn, V, Ti et Zr, notamment MoCoB ou Mo2NiB2, - X a Y b B c wherein X and Y are selected from Mo, Cr, Co, Ni, Fe, Mn, V, Ti and Zr, in particular MoCoB or Mo 2 NiB 2
- XSiB où X est Mo, Cr, Co, Ni, Fe, Mn, V, Ti ou Zr.  - XSiB where X is Mo, Cr, Co, Ni, Fe, Mn, V, Ti or Zr.
4. Ensemble selon l'une des revendications précédentes, caractérisé en ce que lesdites une surface du moule ébaucheur et une surface du moule de bague comprennent au moins en partie une première phase d'alliage base nickel ou base cobalt et une seconde phase constituée d'un lubrifiant solide ou d'un mélange de lubrifiants solides.  4. An assembly according to one of the preceding claims, characterized in that said one surface of the blank mold and a ring mold surface comprise at least in part a first nickel base or cobalt base alloy phase and a second phase consisting of a solid lubricant or a mixture of solid lubricants.
5. Ensemble selon l'une des revendications précédentes, caractérisé en ce que lesdites une surface du moule ébaucheur et une surface du moule de bague sont constituées au moins en partie d'un revêtement comprenant un alliage base nickel. 5. An assembly according to one of the preceding claims, characterized in that said one surface of the blank mold and one surface of the ring mold are formed at least in part of a coating comprising a nickel base alloy.
6. Ensemble selon l'une des revendications précédentes, caractérisé en ce que lesdites une surface du moule ébaucheur et une surface du moule de bague sont constituées au moins en partie d'un revêtement comprenant un alliage base cobalt.  6. An assembly according to one of the preceding claims, characterized in that said one surface of the blank mold and one surface of the ring mold are formed at least in part of a coating comprising a cobalt base alloy.
7. Ensemble selon l'une des revendications précédentes, caractérisé en ce que lesdites une surface du moule ébaucheur et une surface du moule de bague comportent au moins en partie une incrustation de lubrifiant solide.  7. The assembly as claimed in one of the preceding claims, characterized in that said one surface of the blank mold and one surface of the ring mold comprise at least in part an inlay of solid lubricant.
8. Machine I.S. dont une section au moins comporte au moins un ensemble selon l'une des revendications précédentes.  8. Machine I.S. at least one section comprises at least one assembly according to one of the preceding claims.
9. Procédé de fabrication d'un article en verre creux mettant en œuvre au moins un ensemble selon l'une des revendications 1 à 7.  9. A method of manufacturing a hollow glass article implementing at least one set according to one of claims 1 to 7.
EP14729397.1A 2013-05-13 2014-05-07 Blank mold and neck mold having reduced relative friction Withdrawn EP2996994A1 (en)

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FR1354253A FR3005463A1 (en) 2013-05-13 2013-05-13 EBOUCHEUR MOLD AND RING MOLD WITH REDUCED RELATIVE RING
FR1362222A FR3005464B1 (en) 2013-05-13 2013-12-06 EBOUCHEUR MOLD AND RING MOLD WITH REDUCED RELATIVE RING
PCT/FR2014/051065 WO2014184466A1 (en) 2013-05-13 2014-05-07 Blank mold and neck mold having reduced relative friction

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US4131552A (en) * 1975-05-21 1978-12-26 Ball Corporation High temperature release and lubricating compositions for glass molds
DE2730262A1 (en) * 1977-07-05 1979-01-18 Heye Hermann Fa Multi-segment dies for moulding glass - where all die surfaces exposed to wear are made of very hard alloys
JPS5910936B2 (en) * 1981-07-28 1984-03-12 東洋ガラス株式会社 Glass bottle manufacturing method and mold
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