US3685572A - Apparatus for die-casting metals - Google Patents

Apparatus for die-casting metals Download PDF

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Publication number
US3685572A
US3685572A US81801A US3685572DA US3685572A US 3685572 A US3685572 A US 3685572A US 81801 A US81801 A US 81801A US 3685572D A US3685572D A US 3685572DA US 3685572 A US3685572 A US 3685572A
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United States
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component
metal
components
shot
duct
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Expired - Lifetime
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US81801A
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English (en)
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Bryan George Carver
Ronald Crooks
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GKN Group Services Ltd
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GKN Group Services Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/2023—Nozzles or shot sleeves

Definitions

  • ABSTRACT Die-casting apparatus primarily for casting ferrous metals, including a shot duct formed from two or more longitudinally successive structurally separate components which may be made of respective different materials or of the same material, in either case selected to suit the operating conditions to which they are exposed.
  • the components are supported partly by one of the dies and partly by a casing such that the degree of tightness of interference between the casing and the components supported therein is selected to provide a controlled degree of radially outward conduction of heat thereby to control the operating environment of the components.
  • This invention relates to an apparatus for casting metal into a cavity formed between separable repeatedly usable dies and in which shots of molten metal are fed into the cavity under pressure, as distinct from merely under gravity, along a duct (herein called the shot duct) by a piston movable therein, said shot duct communicating at one end (herein called the delivery station) with the die cavity, and being so formed or constructed as to be able to receive at another position (herein called the receiving station) spaced longitudinally of the shot duct from the delivery station, a quantity of the molten metal to be fed along the shot duct into the die cavity.
  • Such apparatus is hereinafter referred to as die-casting apparatus of the kind specified.
  • the invention is applicable primarily to die-casting apparatus of the kind specified for casting ferrous metal, that is cast iron or steel, but may be applied generally to apparatus for casting other metals, more especially those in relation to which similar or analogous problems to those hereinafter described arise.
  • Ferrous metals require to be cast at a high temperature which typically is the region of 1,300 C for cast iron and in the region of l,600 C for steel.
  • the shot duct either has been formed as a single tubular component or as incorporated a onepiece liner extending throughout the length of the shot duct.
  • the conveying of a ferrous metal at these temperatures along the shot duct has been found to produce rapid deterioration of the shot duct leading to a shortened service life, but the deterioration phenomena which we have observed are consistent with the deterioration arising from somewhat different causes at different positions along the shot duct.
  • the present invention is based on the concept that a shot duct which is better able to withstand these conditions of service requires to be designed to take into account the different conditions of operation which occur along its length and the present invention is, therefore, based in part upon careful observance and analysis of these conditions of operation as well as upon the structure of the improved shot duct designed to overcome this problem.
  • the interior surface of the shot duct tends to be eroded by penetration into the surface layer of pieces of a solid state skin formed on the molten metal immediately adjacent to the inner surface of the shot duct, due possibly to the breaking up of this skin during the forcing of the shot of molten metal by the piston along the shot duct and into the die cavity.
  • the action of the solidified skin on the surface layers of the material of which the shot duct is composed is partly analogous to abrasion by a solid state abrasive substance, and partly analogous to the establishment of elementary friction welds particularly if the material utilized for the shot duct is a metal having welding compatability with the metal undergoing casting.
  • the interior surface of the shot duct at the receiving station is consistent with physical and/or chemical erosion by impact and contact with the molten metal to be cast when the latter is first delivered into the shot duct.
  • Erosion at the region of impact is also believed due to fluid friction between the molten metal to be cast and the solid state material of which the shot duct is composed.
  • a shot duct in accordance with the present invention is sub-divided into longitudinally successive structurally separate. components, the materials of which are selected respectively to suit the different operating conditions to which these components are subjected during feed of themolten metal along the shot duct to the die cavity.
  • a preferred embodiment of shot duct in accordance with the invention is formed as an assembly of longitudinally successive structurally separate components, there being one such component at the delivery station and formed of a material which is selected to present a hard surface at the operating temperature resistant to penetration by fragmentation and displacement of a solid state skin formed in the metal undergoing casting and a further such component at the receiving station which is made from a material which does not enter into chemical and/or physical reaction with the metal undergoing casting.
  • the shot duct may include a component at the delivery station formed of a material which is selected to present a hard surface at the operation temperature resistant to penetration by fragmentation and displacement of a solid state skin formed in the steel undergoing casting adjacent to the interior surface of the shot duct at this station.
  • the component incorporated in the shot duct at the receiving station may, on the other hand, be made from a material which does not enter into a metallurgical reaction with the metal undergoing casting.
  • the material may either not include the metal to be cast or include such metal only in combination with one or more alloying elements which provide a high degree of stability preventing or reducing migration of the metal
  • the component of the shot duct incorporated therein at the delivery station is preferably made of a material selected to present a relatively low thermal otherwise tend to reduce the hardness of the surface.
  • the shot duct preferably includes an intermediate component between those situated at the delivery and receiving station, such intermediate component being formed from a material selected to have good resistance to thermal fatigue.
  • a further feature of the invention is that one or more of the components above described may be mounted in a casing supporting the components externally and made of a material and to dimensions which provide alone, or in combination with the components, the requisite transverse rupture strength.
  • FIG. 1 shows diagrammatically an injection moulding machine in side elevation
  • FIG. 2 shows a vertical cross-section through the axis of the shot duct thereof on a larger scale.
  • the apparatus comprises separable dies and 11 which define a die cavity 12 and which separate along a parting plane X.
  • Such dies can be moved between a closed position, as shown in FIG. 2, and an open position in which the die 11 moves to the left away from the die 10 by any suitable mechanism, either mechanical or hydraulic, of known form.
  • FIG. 1 shows a known form of machine employing a mechanical mechanism for closure of the dies 10 and 11.
  • This machine includes a bed 1 having a mounting member 2 which carries the die 10 in a fixed position.
  • the movable die 1 1 is carried on a slide plate 3 which is slidable along horizontally extending bars 4 which are fixed in position relative to the bed 1.
  • the slide plate 3 is movable along the bars 5 by means of a toggle mechanism indicated generally at 5.
  • the toggle mechanism 5 is operable by means of a piston and cylinder unit 6 which is carried by a longitudinally adjustable mounting member 7.
  • a connecting rod 60 extends'from the unit 6 to the toggle mechanism 5.
  • Also fixedly mounted on the bed 1 there is a piston and cylinder unit 8 having a connecting rod 80 for operation of the shot duct 14 which is hereinafter described in detail.
  • the dies 10 and 11 are made of a material which is capable of repeated use to form cast metal articles in the die cavity 12.
  • the dies 10 and 11 are either made of, or lined with, a metal of a higher melting point, or have a rate of heat dissipation, either natural or produced by cooling means provided in association therewith, which maintain them at a sufficiently low temperature to ena- 1 ble them to withstand repeated use.
  • the dies may be formed of molybdenum or an alloy thereof.
  • a suitable medium for this purpose is graphite suspended in 'a suitable carrier, or carbon black deposited from an acetylene torch.
  • One or both of the dies is formed with a channel or gate 13 by means of which the metal to be castis fed into the die cavity upwardly, preferably into the lower- 7 most part of the die cavity.
  • the metal is fed to the lower end of the gate 13 by 7 means of the shot duct 14, and which is formed or constructed to define a horizontal, or approximately horizontal, bore 15 conveniently of circular shape in cross-section and of uniform diameter throughout its length (except for a terminal portion at the forward end as hereinafter described). In some cases the bore 15 could, however, be inclined to the horizontal.
  • the cast metal is delivered into the bore 15 at a receiving station 16 andis moved'along the bore by a piston '17 connectedto a suitable operating mechanism, either mechanical or hydraulic, and such as the piston and cylinder unit 8.
  • a suitable operating mechanism either mechanical or hydraulic, and such as the piston and cylinder unit 8.
  • the metal thus is forced from the bore 15 at a delivery station 18 to pass upwardly through the gate 13 under pressure.
  • the pressures employed may vary widely but it is contemplated that pressures of as much as 5,000 to 6,000 lbs. per square inch may be obtained during the operation of feeding the molten metal into the die cavi--
  • delivery of molten metal into the bore may be effected in a variety of ways, one of which is illustrated diagrammatically and consists in pouring the metal A from a pot l9 through'an opening 20 leading to the" receiving station 16, the metal being at the required temperature, for example in the region of l,300 C for cast iron and l,600 C for steel, by any suitable heating means provided in associated with the pot
  • this comprises a plurality of inner components, these being a front liner or insert 21 at the delivery station, an intermediate liner or insert 22, and
  • the front casing component 24 has a'tits forward end a flange 30 through respective apertures in whichscrews 31 are passed to secure the front casing component 24 to the fixed die 10.
  • the front casing component 24 includes a generally tubular body portion within which part of the generally tubular rear casing component 25 is received.
  • the rear casing component 25 has an external flange 35 mid-way along its length. The flange 35 abuts the rear end of the front casing component 24 and is apertured for the passage of screws 34 whereby the casing components 24 and 25 are rigidly secured together.
  • the front liner or insert 21 is located in an aperture in the fixed die and is largely supported thereby. However, the insert 21 extends outwardly from the fixed die 10 and at its rearward end is supported particularly by the flange 30 of the forward casing component 24. At its rearward, the insert 21 is formed with an outwardly directed flange 21a which is located between the forward end of the rear casing component 25 and a radially inward extension of the flange 30 at the forward end of the front casing component 24.
  • the intermediate liner or insert 22 is supported by the forward portion of the rear casing component 25 and at its forward end abuts the flange 21a of the insert 21.
  • the rear liner or insert 23 is supported by the rear portion of the rear casing component 25 and is in abutting relation with the liner 22. At its rearward end, the liner 23 abuts an intumed lip 25a afi'orded by the casing component 25.
  • the insert 23 is formed with an aperture 20a which registers with a corresponding aperture 20b formed in the rear portion of the rear casing component 25 collectively to define the opening 20 through which the molten metal can be poured into the interior of the bore 15.
  • the external surface of the forward portion of the rear casing component 25 is somewhat recessed so that there is a small clearance space, extending over most of the length of the forward portion of the front casing component.
  • the diameter of the rear casing component 25 is nominally unifonn throughout its length, the diameter may be locally increased by a few thousandths of an inch in the regions indicated at 38 and 39 so as to allow for a small amount of outward expansion of the liners 22 and 23 in those regions and to prevent undue compressive stress being exerted on these liners at the working temperature of the assembly.
  • the front liner or insert 21 should be made of a material which affords relatively low thermal conductivity in order, so far as possible, to minimize the freezing of the metal undergoing casting and avoiding the formation of, or reducing the thickness of, the skin referred to.
  • the front liner or insert should be in contact with a heat sink so that, despite the low thermal conductivity, heat is conveyed away from this component to an extent which prevents this component attaining so high a temperature that its properties of hardness are so adversely affected as to offset the value of the low thermal conductivity. Accordingly it is contemplated that the optimum values with respect to thermal conductivity and the capacity of the heat sink can be selected.
  • the front liner or insert may be made of a ferrous metal and in particular a steel of a composition designed to withstand abrasion under conditions of high temperature.
  • a steel suitable for this purpose is steel of the composition utilized for hot working forging dies, preferably the component being subjected to hardening and nitriding.
  • One particularly suitable steel is that of A.I.S.l. specification H13.
  • the composition of this steel is as follows carbon 0.3 to 0.4 percent, manganese 0.2. to 0.4 percent, silicon 0.8 to 1.2, chromium 4.7 to 5.5 percent, vanadium 0.8 to 1.2, molybdenum 1.2 to 1.75, balance iron.
  • the front liner or insert 21 may be made of a non-ferrous metal.
  • the refractory metals might be utilized such as tungsten, platinum, molybdenum and their alloys, particularly an alloy of molybdenum known by the designation TZM which contains 0.5 percent titanium and 0. 1 percent zirconium.
  • non-ferrous materials which might be employed include the so-called superalloys which are based on nickel and chromium and the like, particularly those known as Rene 41 and Nimonic.
  • Ceramic material which may be employed for this component is a ceramic material.
  • Particularly suitable ceramic for this purpose are silicon nitride, and silicon carbide and zirconia.
  • the ceramic material would be in the form of a liner supported externally and maintained in a state of compression by an outer tube made for example from a steel such as that mentioned above.
  • transverse rupture strength Any deficiency in the matter of transverse rupture strength would be made good by the additional complement of transverse rupture strength afforded by the front casing component 24, particularly the flange 30 provided at the forward end thereof and which abuts the die 10 to which it is secured by screws or other suitable fastening elements at the position indicated at 31.
  • a further factor in the operating conditions is that the comer 27 formed at the junction of the interior surface and forward end surface of the front liner or insert 21 is subjected to severe thermal shock and, to minimize failure from thermal fatigue, it is preferred that this comer be rounded as shown.
  • a typical radius when the bore 15 has an internal diameter of about 1 percent inches would be one-eighth of an inch, the insert 21 having a wall thickness of about one-fourth of an inch.
  • a plug 28 of metal remains in the bore 15 adjacent to the delivery station 18, such plug being positively expelled by the piston 17 upon solidification of the cast article in the die cavity 12.
  • the terminal portion of the front liner or insert 21 is made of divergent form, as indicated at 29.
  • a typical divergence (measured as the semi angle of the cone) would be 5, and the axial dimension over which such divergent is present would typically be three-fourths of an inch for a bore of the diameter previously mentioned.
  • the solidified plug 28 forms being formed as an integral part of the front liner or insert 21, it could be structurally separate therefrom.
  • it could comprise an insert of molybdenum, or the alloy thereof mentioned above, keyed into the die so as to be replaceable;
  • the die 10 itself might be shaped to' afford a part equivalent to the forward extremity of the insert 21 as shown.
  • the front liner or insert 21 might be replaced entire-, ly by a bore formed in the die 10.
  • the intermediate liner or insert 22 is subjected to somewhat differing conditions, in that the major problem in this case is one of thermal fatigue. Accordingly while any of the materials previously mentioned for possible use in respect of the component 21 may be employed, it is contemplated that advantageously steel of the A.I.S.I. specification H13 may be best suited tothis component.
  • Erosion at this position is believed to be due partly to fluid friction but also to an appreciable extent by chemical and/or physical action between the cast metal and that of which the component 23 is made (assuming that it is made of a metal).
  • the component 23 may be made of molybdenum or tungsten or alloys thereof when casting a ferrous metal;
  • any deficiency of transverse rupture strength would be made good by the rearward portion of the rear casing component 25. Again this-can closely embrace the rear liner or insert-23 along the entire length of the latter, or radially spaces may'be left if desired to control the rate of heat transfer in an outward radial direction.
  • the shot duct in three or more sections is believed to improve the thermal stability of the construction and therefore prolong its service life, but where, as in the embodiment illustrated,the liners are mounted in a casing, thepossibilityof controlling the rate of outward heat transfer as mentioned above further afl'ords an opportunity to ensure that the optimum environmental conditions exist in all regions of the duct even where all the liners are made of the same material.
  • difference regions of the shot duct may be formed from different materials and/or the environmental conditions in different regions of the shot duct can be controlled, particularly as regards the rate of outward heat transfer, to suite the particular requirements of the different regions.
  • the components described may be secured together in any suitable manner as, for example, by the provision of screws or other fastening element at the position 34 extending through the flange 35 of the rear casing component into threaded bores in the front casing component 24.
  • the casing may include an additional sleevelike component which is in direct contact with the liners throughout the whole length of the shot duct.
  • the liners collectively may present an external surface which tapers slightly from end to end, preferably decreasing in cross-sectional dimensions in a direction from the receiving station towards the delivery station although the opposite taper could be utilized.
  • the additional casing component would then be of complementary taper so as to be assembled with the liners as a press fit so that the liner is supported by the casing at all positions along its length.
  • the casing components it would be possible for the casing components to be omitted and for the shot duct to be formed from a plurality of longitudinally successive components which are secured directly together without being supported by such a casing providing such components are designed to afford the requisite transverse rupture strength.
  • apparatus for casting ferrous metal comprising a. separable repeatedly usable dies defining in combination a cavity;
  • an elongated shot duct having at one end a receiving station for receiving shots at an operating temperature sufficient to provide the metal in molten condition and at its other end a delivery station communicating with said cavity;
  • said shot duct comprises at least three components, disposed in end to end relationship longitudinally of the shot duct, a first component being disposed at said delivery station and being formed of a material whose surface remains in hard solidified form at the operating temperature resistant to penetration and abrasion as a result of fragmentation and displacement of a solid state skin formed in the metal during casting, a second component being disposed at the receiving station and being made from a material which is free from entering into chemical and physical reaction with the ferrous metal being cast, and at least one further component intermediate said first and second components and being formed from a material resistant to thermal fatigue.
  • said first component is formed of a material selected from the group comprising molybdenum, a molybdenum alloy, tungsten, a tungsten alloy
  • said second component is formed of a material selected from the group comprising molybdenum, a molybdenum alloy, tungsten, a tungsten alloy
  • said intermediate component is formed from a hot working die steel.
  • a casing extends longitudinally of said shot duct, and at least one of said components is mounted within said casing thereby providing said component with external suprt.
  • said first component is located partly within one of said dies which has a predetermined longitudinal dimension, a

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US81801A 1969-10-25 1970-10-19 Apparatus for die-casting metals Expired - Lifetime US3685572A (en)

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US (1) US3685572A (fr)
JP (1) JPS4816410B1 (fr)
AT (1) AT315403B (fr)
BE (1) BE757933A (fr)
DE (1) DE2051760A1 (fr)
DK (1) DK125628B (fr)
FR (1) FR2065527B1 (fr)
GB (1) GB1330471A (fr)
IE (1) IE34576B1 (fr)
SE (1) SE372186B (fr)
ZA (1) ZA707020B (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2337648A1 (de) * 1972-08-17 1974-02-28 Nippon Light Metal Co Spritzgussmaschine
US4086953A (en) * 1975-02-24 1978-05-02 Kraklau David M Shot sleeve
US5010946A (en) * 1987-10-07 1991-04-30 Hitachi Metals, Ltd. Die casting cylinder
US5012856A (en) * 1988-12-05 1991-05-07 Zecman Kenneth P Fluid cooled shot sleeve
US5310098A (en) * 1992-11-27 1994-05-10 Reynolds Wheels S.P.A. Bush for directing a stream of molten metal into a mold
US5322111A (en) * 1993-02-16 1994-06-21 A. H. Casting Services Limited Ceramic lined shot sleeve
US5697422A (en) * 1994-05-05 1997-12-16 Aluminum Company Of America Apparatus and method for cold chamber die-casting of metal parts with reduced porosity
US6058794A (en) * 1997-04-30 2000-05-09 Accurate Specialties, Inc. Composite sector gear and method for manufacturing same
US6454880B1 (en) 1999-09-29 2002-09-24 Herbert (Lonny) A. Rickman, Jr. Material for die casting tooling components, method for making same, and tooling components made from the material and process
US20070074842A1 (en) * 2005-09-13 2007-04-05 Peter Manoff Shot sleeve insert and method of retarding heat erosion within a shot sleeve bore
US20090165984A1 (en) * 2007-12-28 2009-07-02 Nissei Plastic Industrial Co., Ltd. Injection cylinder in injection apparatus for molding metal material
US9114455B1 (en) 2012-03-30 2015-08-25 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US9114456B1 (en) 2012-03-30 2015-08-25 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US20160184886A1 (en) * 2013-09-26 2016-06-30 Pratt & Whitney Services Pte Ltd. Insert for die cast shot sleeve
US9731348B1 (en) 2012-03-30 2017-08-15 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US9757795B1 (en) 2012-03-30 2017-09-12 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting hot sleeve for use with low iron aluminum silicon alloys
US10486229B1 (en) 2012-03-30 2019-11-26 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
CN113427209A (zh) * 2021-06-21 2021-09-24 广东长盈精密技术有限公司 一种不锈钢表壳的生产工艺

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
GB1594926A (en) * 1978-03-11 1981-08-05 Gkn Group Services Ltd Method of die casting
JPS5594773A (en) * 1979-01-09 1980-07-18 Nissan Motor Co Ltd Method and apparatus for die-casting
CA2430276C (fr) * 1991-06-27 2007-03-20 Unicast Technologies Inc. Matrice utilise dans une machine a couler sous pression
DE4229273A1 (de) * 1992-09-02 1994-03-03 Hugo Kunz Füllkammer für eine Druckgießmaschine
EP0936010A1 (fr) * 1998-02-12 1999-08-18 Didier-Werke Ag Procédé et dispositif pour couler sous pression des métaux
EP1057561B1 (fr) * 1999-06-04 2004-09-15 André Müller Chambre de coulée pour machine de coulée sous pression
DE102004008157A1 (de) * 2004-02-12 2005-09-01 Klein, Friedrich, Prof. Dr. Dr. h.c. Gießmaschine zur Herstellung von Gussteilen

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US3270383A (en) * 1963-06-24 1966-09-06 Gen Motors Corp Method of die casting
US3515203A (en) * 1968-04-29 1970-06-02 Moline Malleable Iron Co Multiple plunger injection cylinder for die casting
US3516480A (en) * 1968-06-17 1970-06-23 Hamilton Die Cast Inc Shot tube for a die casting type machine
US3533464A (en) * 1968-04-10 1970-10-13 Moline Malleable Iron Co Injection cylinder for metal casting
US3540519A (en) * 1968-05-29 1970-11-17 Du Pont Process for producing self-destroying silica molds

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Publication number Priority date Publication date Assignee Title
US3015849A (en) * 1959-06-08 1962-01-09 Plymouth Die Mold Inc Short-stroke press
US3270383A (en) * 1963-06-24 1966-09-06 Gen Motors Corp Method of die casting
US3533464A (en) * 1968-04-10 1970-10-13 Moline Malleable Iron Co Injection cylinder for metal casting
US3515203A (en) * 1968-04-29 1970-06-02 Moline Malleable Iron Co Multiple plunger injection cylinder for die casting
US3540519A (en) * 1968-05-29 1970-11-17 Du Pont Process for producing self-destroying silica molds
US3516480A (en) * 1968-06-17 1970-06-23 Hamilton Die Cast Inc Shot tube for a die casting type machine

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2337648A1 (de) * 1972-08-17 1974-02-28 Nippon Light Metal Co Spritzgussmaschine
US3901306A (en) * 1972-08-17 1975-08-26 Nippon Light Metal Co Molten metal injector for an injection die casting machine
US4086953A (en) * 1975-02-24 1978-05-02 Kraklau David M Shot sleeve
US5010946A (en) * 1987-10-07 1991-04-30 Hitachi Metals, Ltd. Die casting cylinder
US5012856A (en) * 1988-12-05 1991-05-07 Zecman Kenneth P Fluid cooled shot sleeve
US5310098A (en) * 1992-11-27 1994-05-10 Reynolds Wheels S.P.A. Bush for directing a stream of molten metal into a mold
US5322111A (en) * 1993-02-16 1994-06-21 A. H. Casting Services Limited Ceramic lined shot sleeve
US5697422A (en) * 1994-05-05 1997-12-16 Aluminum Company Of America Apparatus and method for cold chamber die-casting of metal parts with reduced porosity
US6058794A (en) * 1997-04-30 2000-05-09 Accurate Specialties, Inc. Composite sector gear and method for manufacturing same
US6454880B1 (en) 1999-09-29 2002-09-24 Herbert (Lonny) A. Rickman, Jr. Material for die casting tooling components, method for making same, and tooling components made from the material and process
US20070074842A1 (en) * 2005-09-13 2007-04-05 Peter Manoff Shot sleeve insert and method of retarding heat erosion within a shot sleeve bore
US7464744B2 (en) * 2005-09-13 2008-12-16 Peter Manoff Shot sleeve insert and method of retarding heat erosion within a shot sleeve bore
US20090165984A1 (en) * 2007-12-28 2009-07-02 Nissei Plastic Industrial Co., Ltd. Injection cylinder in injection apparatus for molding metal material
US7926545B2 (en) * 2007-12-28 2011-04-19 Nissei Plastic Industrial Co., Ltd. Injection cylinder in injection apparatus for molding metal material
CN101468389B (zh) * 2007-12-28 2012-10-10 日精树脂工业株式会社 模制金属材料的注射装置中的压注缸
US9114455B1 (en) 2012-03-30 2015-08-25 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US9114456B1 (en) 2012-03-30 2015-08-25 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US9731348B1 (en) 2012-03-30 2017-08-15 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US9757795B1 (en) 2012-03-30 2017-09-12 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting hot sleeve for use with low iron aluminum silicon alloys
US10486229B1 (en) 2012-03-30 2019-11-26 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US11090714B1 (en) 2012-03-30 2021-08-17 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US11524334B1 (en) 2012-03-30 2022-12-13 Brunswick Corporation Method and apparatus for avoiding erosion in a high pressure die casting shot sleeve for use with low iron aluminum silicon alloys
US20160184886A1 (en) * 2013-09-26 2016-06-30 Pratt & Whitney Services Pte Ltd. Insert for die cast shot sleeve
US10071417B2 (en) * 2013-09-26 2018-09-11 United Technologies Corporation Insert for die cast shot sleeve
CN113427209A (zh) * 2021-06-21 2021-09-24 广东长盈精密技术有限公司 一种不锈钢表壳的生产工艺

Also Published As

Publication number Publication date
BE757933A (fr) 1971-04-01
FR2065527B1 (fr) 1975-02-21
ZA707020B (en) 1971-08-25
JPS4816410B1 (fr) 1973-05-22
DE2051760A1 (de) 1971-05-06
GB1330471A (en) 1973-09-19
IE34576B1 (en) 1975-06-11
SE372186B (fr) 1974-12-16
AT315403B (de) 1974-05-27
IE34576L (en) 1971-04-25
FR2065527A1 (fr) 1971-07-30
DK125628B (da) 1973-03-19

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