CN206139791U - A feeder component for metal founding - Google Patents

Abstract

A feeder component for metal founding includes tubular main body. Tubular main body injects the hole of running through it to but have first end and relative the second end with and the compression unit branch of asking, but compression unit divides the first and second regional step form configurations that have including the alternating series for when in use exerted, then the distance between first and second tip was reduced. The feeder component becomes by having the steel that the by weight is less than 0.05% carbon content. But compression unit divides can include at least three kink, and wherein every kink is by a pair of first and second adjacent regional the formation.

Description

For the feeder element of metal casting

Technical field

The utility model is related to be suitable to the feeder element used in the metal casting operation using casting mould.

Background technology

In typical casting process, the metal of melting is poured into the preformed mould cavity for limiting cast shape It is interior.However, reducing when the metal solidifies, cause shrinkage cavity, so as to cause the unacceptable defect in final casting.This be Known problem in casting industry, and by using feeder sleeve or standpipe during mould formation by the way that they are applied It is integrated into pattern plate in mould or inserts the sleeve in the cavity in formed mould to solve after mould is formed. Each feeder sleeve provides extra (typically closing) volume or cavity connected with the mould cavity, so that molten Melt metal also in feeder sleeve.In the curing process, the motlten metal in feeder sleeve flow back into mould cavity The interior contraction to compensate foundry goods.

After removing in foundry goods solidification and by founding materials, the unwanted kish in feeder sleeve cavity Remain attached to foundry goods and must be removed.For the ease of removing kish, feeder sleeve cavity can be towards its base portion (that is, feeder sleeve is by near the end of mould cavity) is tapered into the design of commonly known as neck down sleeve.When violent Strong to blow when being applied on kish, (process is referred to as " striking will be close to be separated at the weakest point of mould for it Fall ").The tiny floor space of foundry goods be it is desirable, can be by adjacent spy to allow feeder sleeve is positioned in foundry goods Levy in the region of restriction.

Although feeder sleeve can be applied directly on the surface of casting mould cavity, their Jing often combine charging Device element (also referred to as breaker core) is used.Breaker core is only located at the fire resisting between mould cavity and feeder sleeve Disk of material (the typically core of the core or ceramic core of resin bonding or feeder bush material), it has generally intracardiac wherein Hole.By the diameter in the hole of breaker core be designed to less than feeder barrel bore (it be not necessarily be tapered into cone Shape) diameter so that near cast(ing) surface breaker core at knocking out.

Molding sand may be logically divided into two primary categories；(being based on organic or inorganic bonding agent) of chemical adhesive or splicing clay 's.The molding sand bonding agent of chemical adhesive is typically from solidity system, and wherein bonding agent and chemical hardening agent mixes with sand, and Bonding agent and curing agent immediately begin to reaction, but be enough to slowly allow sand to shape around pattern plate enough, then allow sufficiently Harden to remove and to cast.The shaping of splicing clay uses clay and water as bonding agent, and can be with " green " or not dry Dry state is used, and commonly known as greensand.Damp sand mixture is individually not easy under compressive force to flow or be not easy to move Move the molding sand to be compacted around pattern and give mould strength character enough as detailed previously, jolt, vibrate, extrude and rush The various combinations of pressure are applied to the mould for producing uniform strength with high productivity ratio.Sand is generally compressed under high pressure (compacting), is usually used one or more hydraulic cylinders.

In order to apply sleeve in so high pressure forming process, pin exists usually as the mount point for being suitable to feeder sleeve It is arranged at predetermined position on molding pattern plate (it limits mould cavity).Once required sleeve is placed on pin and (makes The base portion of feeder is obtained in pattern plate or pattern plate is risen above), the mould is by the way that molding sand to be poured in pattern plate and enclose Topple over around feeder sleeve, until feeder sleeve is capped and diaphragm capsule is filled.The applying of molding sand and subsequent high pressure can be led The damage and breakage of feeder sleeve are caused, particularly when feeder sleeve and the pattern plate directly contact before punching press, and with The increase of the complexity of foundry goods and the requirement of productivity ratio, need the mould of more dimensionally stables, thus in the presence of towards higher Stamping pressure simultaneously causes the trend of sleeve breakage.

The applicant has been developed that a series of feeder elements for subsiding being used in combination with feeder sleeve, its It is described in WO2005/051568, WO2007141446, WO2012110753 and WO2013171439.When in forming process During middle withstanding pressure, feeder element is compressed so as to protect feeder sleeve to be protected from damaging.

US2008/0265129 describes a kind of feeder insert, and it is used to be inserted into the casting die for casting metal In tool, it is included therein the feeder main body with feeder cavity.The bottom side of feeder main body connects with the casting mould It is logical, and the top side of feeder main body is provided with energy absorbing device.

EP1184104A1 (Chemex GmbH) describes a kind of feeder sleeve dimerous, and (it can be insulation Or heat release), the feeder slip expansion when molding sand is compressed；The inwall of second (top) part and first (bottom) part Outer wall it is concordant.

EP1184104A1 Fig. 3 a to 3d show the expanding-contracting action of feeder sleeve dimerous.Feeder sleeve It is unfavorable when using exothermic sleeves with the pattern directly contact, because it can cause poor surface smoothness, table of casting The local pollution in face and the even casting flaw of lower surface.Even if additionally, low portion is taper, then still suffering from pattern Wider floor space because low portion must relative thick bearing the power undergone in punching course.This is knocking out aspect And by the occupied space on pattern of feeder system in terms of be unsatisfactory.Lower interior portion part and upper external Part is held in position in down by holding element.The holding element comes off and falls in molding sand to allow flexible moving Make.As time goes on holding element will be gathered in molding sand, so as to pollute molding sand.This in the following cases, holding element It is particularly troublesome to make from exothermic material, and because they can react little explosive defects are produced.

US6904952 (AS Luengen GmbH＆Co.KG) describes a kind of feeder system, and wherein tubular body is temporary When be glued to the inwall of feeder sleeve.There is relative shifting when when molding sand being compressed between feeder sleeve and tubular body It is dynamic.

The demand of the feed system being suitable to used in high-pressure molding system constantly increases, partially due on molding equipment Improvement, and partially due to producing new foundry goods.Some grades of spheroidal graphite cast-iron and specific cast structure may Negatively affect the validity of the feed properties of neck by some metal feeder elements.Additionally, some form wires or casting Making configuration can cause excess compression (subsiding for feeder element or stretching for feeder system), cause the base portion of the sleeve tight Near cast(ing) surface, only separated by a thin layer sand.

The content of the invention

The utility model is provided for the feeder element used in metal casting, and seeks to overcome and prior art One or more associated problems of feeder element or system, or a kind of useful replacement scheme is provided.

According to first aspect of the present utility model, there is provided for the feeder element of metal casting, it includes：

Tubular body, it limits hole therethrough, and with first end and relative the second end and first end Compressible portion between portion and the second end, the compressible portion is with the first and second regions for including alternating series Step-like configuration so that in use during applying power, then the distance between first and second ends be reduced；

It is characterized in that the feeder element is made up of the steel with carbon content by weight less than 0.05%.

Feeder element has two functions：I () open bore provides the passage from feeder sleeve cavity to casting mould； (ii) deformation (due to can collapsed portion) of feeder element is for absorbing the energy that can otherwise cause feeder sleeve breakage.

Feeder element of the present utility model can be considered breaker core, because this term suitably describes using In some element functions.

In one embodiment, compressible portion includes at least 3 stage portions, or " kink ".In another embodiment, Compressible portion includes at least 4 stage portions or " kink ".These are twisted together and cause compressible portion in a controlled manner predetermined Deform under load (being compared to crushing strength).Each kink can be formed by a pair the first and second adjacent regions.

In a kink, i.e., the exterior angle Φ between the first and second adjacent regions can be measured before compacting. It should be appreciated that exterior angle Φ will reduce punching press when compressible portion subsides.In a series of embodiment, in kink Exterior angle Φ was less than 130 °, 120 °, 100 °, 90 °, 80 °, 70 ° or 60 ° before compacting.In a series of embodiment, in kink In exterior angle Φ be at least 50 °, 60 °, 70 °, 75 ° or 80 ° before compacting.In one embodiment, the exterior angle in kink Φ was at least 70 ° and is less than or equal to 120 ° before compacting.In one embodiment, the exterior angle Φ in kink is in compacting Front is at least 75 ° and less than or equal to 110 °.

In one embodiment, the exterior angle Φ in kink was at least 80 ° and is less than or equal to 100 ° before compacting. In one embodiment, the exterior angle Φ in kink was for about 90 ° before compacting.

Before compacting abutting aperture and the interior angle θ formed between adjacent second and first area can be measured.Should It is understood by, when compressible portion subsides, the angle, θ will reduce punching press.In a series of embodiment, adjacent second Interior angle θ and first area between was less than 130 °, 120 °, 100 °, 90 °, 80 °, 70 °, 60 ° or 50 ° before compacting.One In the embodiment of series, the interior angle θ between adjacent second and first area was at least 30 ° before compacting, 40 °, 50 °, 60 ° or 70 °.In one embodiment, the interior angle θ between adjacent second and first area was at least 60 ° before compacting And it is less than or equal to 120 °.In individual embodiment, the interior angle θ between adjacent second and first area be before compacting to Lack 70 ° and less than or equal to 100 °.

In one embodiment, the interior angle θ between adjacent second and first area was for about 80 ° before compacting. In one embodiment, the interior angle θ between adjacent second and first area was for about 90 ° before compacting.In one embodiment In, the interior angle θ between adjacent second and first area was for about 100 ° before compacting.

In certain embodiments, the surface of first area is Frusto-conical.In one embodiment, second area Surface is Frusto-conical.In certain embodiments, the surface in the first and second regions is Frusto-conical.

It should be appreciated that the tubular body has longitudinal axis, axially bored line.In first area and the longitudinal axis Between formed angle [alpha] can be with measured.Similarly, the angle beta for being formed between second area and the longitudinal axis can be with It is measured.

In one embodiment, angle [alpha] and β are identicals.

In one embodiment, α or β are for about that 90 °, i.e. first area or second area are approximately perpendicular to axially bored line.

In one embodiment, α or β are for about that 0 °, i.e. first area or second area are roughly parallel to axially bored line.

In one embodiment, α and β are respectively at least 40 ° and are less than or equal to 70 °.In one embodiment, α and β It is respectively at least 30 ° and is less than or equal to 60 °.

In one embodiment, α or β are at least 35 ° and less than or equal to 55 °.

In one embodiment, α and β is respectively at least 35 ° and less than or equal to 55 °.

Stage portion or the diameter of kink can be with measured.In one embodiment, all kinks have identical diameter. In another embodiment, the diameter of kink is gradually reduced towards the first end of tubular body, i.e. compressible portion is frustum of a cone Shape.

The compression property of feeder element can be changed by adjusting the size of each kink.In one embodiment, own First area there is identical length and all of second area has identical length (it can be identical with first area Or different).In another embodiment, the length of first area reduces towards the first end of tubular body.In another reality In applying example, the length of second area reduces towards the first end of tubular body.

In certain embodiments, can arrange incompressible between the second end of tubular body and the compressible portion Region.In certain embodiments, incompressible region does not have step-like configuration.In certain embodiments, it is incompressible The side wall in region be columnar and parallel to the longitudinal axis of the main body.

The height in incompressible region can be measured on the direction parallel to axially bored line, and can be compared to compacting The height (also measuring in the direction parallel to axially bored line) of front tubular body.In a series of embodiment, incompressible area The height in domain corresponds at least the 20%, 30%, 40% or 50% of tubular body height.In another a series of embodiment, no The height of compressible region is corresponding to 90%, 80%, 70%, 60%, 50% or 40% less than the tubular body height.

The height of the highly comparable compressible portion compared with before compacting of tubular body is (also parallel to axially bored line Direction measures).In a series of embodiment, the height of the compressible portion corresponds to the tubular body height at least 20%, 30%, 40% or 50%.In another a series of embodiment, the height of compressible portion is corresponding to less than the pipe The 90%, 80%, 70%, 60%, 50% or 40% of shape body height.

The height of the highly comparable compressible portion compared with before compacting in incompressible region.In some embodiments In, incompressible region is from 1: 1 to 5 relative to the height ratio of compressible portion: 1, from 1.1: 1 to 3: 1 or from 1.3: 1 to 2∶1.In a series of embodiment, incompressible region is from 1: 1.5 to 5 relative to the height ratio of compressible portion: 1.5.In certain embodiments, incompressible region is from 1: 1 to 1 relative to the height ratio of compressible portion: 5, from 1: 1.1 To 1: 3 or 1: 1.3 to 1: 2.

In one embodiment, incompressible region is for about 2: 1.5 relative to the height ratio of the compressible portion. In one embodiment, incompressible region is about 1: 1.5 relative to the height ratio of the compressible portion.

In certain embodiments, the second end of tubular body is expanded outwardly to form flange.In one embodiment, Flange can be annular (that is, being approximately perpendicular to the longitudinal axis of the main body).

In one embodiment, flange includes at least one circumferential recess.In certain embodiments, circumferential recess has the back of the body From the open side of the first end of tubular body.Can be with measured in the depth of the circumferential recess of flange top itself.It is one In the embodiment of row, circumferential recess has the depth less than 5,4,3,2 or 1 millimeters.

The size and quality of tubular body will be depending on application.

The quality of tubular body is generally preferably reduced as far as possible.This reduces material cost, and is also in casting process Beneficial, i.e., by the thermal capacity of reduction tubular body.In one embodiment, tubular body has less than 50,40,30,25 Or 20 grams of quality.

There is tubular body internal diameter and external diameter and thickness that it is difference between the internal diameter and external diameter (all to hang down Directly measure in the plane of axially bored line).In certain embodiments, the thickness of tubular body is at least 0.1,0.2,0.3, 0.5,0.8,1 or 1.5 millimeter.In certain embodiments, the thickness of tubular body is at least 2,1.5,1,0.8 or 0.5 millimeters. In individual embodiment, it is thickness from 0.2 to 1 millimeter that tubular body has.Less thickness is for many reasons beneficial, bag Include and reduce the thermal capacity of material and reduction tubular body needed for manufacture tubular body, therefore reduce in casting from feeder gold The amount of the energy that category absorbs.

In one embodiment, tubular body has circular section.However, cross section can be non-circular, such as It is avette, Long Circle or ellipse.

In one embodiment, tubular body has the shape of cylinder.It should be understood that the main body of cylinder is basic On parallel to the main body longitudinal axis.In another embodiment, tubular body has Frusto-conical shape.This will It is understood to mean that main body narrows (be tapered tapered) on the direction away from the second end, i.e. the diameter direction of main body The second end of tubular body is bigger and less towards the first end of tubular body.In Frusto-conical main body and longitudinal direction Cone angle μ between (hole) axle can be with measured.In a series of embodiment, angle μ be less than 50 °, 40 °, 30 °, 20 °, 15 ° or 10 °.In a series of embodiment, angle μ is at least 5 °, 10 °, 15 ° or 20 °.In one embodiment, angle μ is At least 5 ° and be less than or equal to 20 °.

In a preferred embodiment, tubular body has frusto-conical region, and it is from compressible portion towards the One end narrows, and in use first end is near foundry goods.The narrower part of neighbouring foundry goods is referred to as feeder neck, and provides Preferably feeder is knocked out.In a series of embodiment, conical neck should be less than relative to the angle of the axially bored line 55 °, 50 °, 45 °, 40 ° or 35 °.

Knock out to further improve, the first end of tubular body can be made up of to provide for pacifying antelabium or pearl The surface being mounted on mould pattern, and a recess is produced in resulting casting feeder neck, to promote it to remove (quilt Knock out).In one embodiment, the first end of tubular body is made up of annular lip.In one embodiment, tubular body First end be made up of antelabium, the antelabium is arranged essentially parallel to the longitudinal axis of tubular body.In certain embodiments, lip Edge is extend in the hole.

In certain embodiments, tubular body can be compressing from the single steel disc of constant thickness.In one embodiment, Tubular body is made via stretch processing, so as to plate slab is radially pulled into shaping dies by the mechanism of punch press It is interior.When the depth of the part that is stretched exceedes its diameter, the process is considered deep stretch, and by with a series of mould weights Newly stretch the part and obtain.In another embodiment, tubular body is made by metal spinning or spin-forming procedure Into thus steel billet disk or steel pipe are attached first on buldging lathe and rotate at a high speed.Then the pressure for localizing is applied to and passes through A series of rollers or instrument in, cause steel to flow downwardly into around heart axle and thereon, the heart axle have the interior of required finishing section Portion's dimension profile.

In order to be suitable to compressing or rotary press modelling, steel should have enough ductility to avoid tearing in forming process Split or occur crack.In certain embodiments, tubular body is made up of cold-rolled steel.

In certain embodiments, tubular body is contained by the carbon with least 0.005,0.01,0.02,0.03 or 0.04% The steel of amount is made.In certain embodiments, tubular body by less than 0.05,0.04,0.03 or 0.02% carbon content steel Make.In one embodiment, tubular body is made up (by weight of the steel with least 0.03% and carbon content less than 0.05% Gauge).

It is appreciated that to be intended to be used in combination with feeder sleeve according to feeder element of the present utility model from above-mentioned discussion.

Description of the drawings

Below with reference to Description of Drawings embodiment of the present utility model, wherein：

Fig. 1 a, 1b, 2a, 2b and Fig. 3 are the schematic diagrames for illustrating the feeder element according to the utility model embodiment.

Specific embodiment

Reference picture 1a, illustrates the tubular body 10 before compression, and it has longitudinal axis Z.Tubular body 10 is towards first end Portion 14 is tapered to form feeder neck.The first end of feeder neck 14 is made up of antelabium 16, and it is in use To contact with pattern plate 2.In this example, antelabium 16 is substantially parallel with longitudinal axis Z.

Tubular body 10 defines an open hole therethrough, and it can be used for the cavity of feeder sleeve (not Illustrate, but it will be installed to the second end 18 of tubular body via the otch provided in feeder sleeve) it is connected to foundry goods. In this example, axially bored line is positioned along longitudinal axis Z.

Tubular body 10 includes " inside " kink 12 of four between first end 14 and the second end 18, their common structures Into the compressible portion 19 configured with bellows-type.Kink 12 can be considered the first area 12a and second of alternating series Region 12b.Angle [alpha] between first area 12a and longitudinal axis Z is about 45 °.Second area 12b and longitudinal axis Z it Between angle beta be about 50 °.Exterior angle Φ in kink, i.e., in tubulose master between a pair first and second regions 12a and 12b The angle that external body is measured is 85 °.Interior angle θ, i.e., in the tubulose master between adjacent second and first area 12b and 12a The angle of body internal measurement is 85 °.All of kink has identical diameter；Therefore compressible portion 19 can be considered cylinder 's.

Incompressible tubular area 4 is arranged between the second end 18 of tubular body and compressible portion 19.Can not The region 4 of compression is parallel to longitudinal axis Z.Incompressible region 4 is about 1 relative to the height ratio of compressible portion 19 : 1, and the height in incompressible region 4 is corresponding to about the 33% of tubular body 10.

Reference picture 1b, it illustrates another embodiment according to tubular body 20 before the compression of the present utility model. Tubular body has the frusto-conical region narrowed towards first end 24 from compressible portion 19, to form feeder neck Portion, it will be contacted when in use with pattern plate 2.

Tubular body 20 is included in four between first end 24 and the second end 28 kinks 12, can press described in its composition Contracting part 19.Angle [alpha], β, θ and Φ are as the embodiment of Fig. 1 a is limited.

Second end 28 forms the annular flange flange for expanding outwardly, its Z perpendicularly to the longitudinal axis.

Reference picture 2a, it illustrates another embodiment according to tubular body 30 before the compression of the present utility model.Pipe Shape main body is tapered tapered to form the feeder neck limited such as the embodiment of Fig. 1 b towards first end 34.

Tubular body 30 is included in four between first end 34 and the second end 38 kinks 32, can press described in its composition Contracting part 39.Kink 32 can be considered the first area 32a and second area 32b of alternating series.Angle [alpha] is about 60 °, and β is about 40°.Angle, θ and Φ are respectively 80 °.The diameter of kink reduces towards first end 34；Compressible portion 39 can be considered butt Cone.The cone angle μ of main body is 8 °.

The second end 38 forms the annular flange flange for expanding outwardly.

Reference picture 2b, it is shown similar to the Frusto-conical tubular body 40 before the compression of Fig. 2 a embodiments, Difference is that the first end of feeder neck 34 is made up of antelabium 46, and it will be contacted when in use with pattern plate 2, and Circumferential recess 50 is arranged in annular flange flange 38.

In this example, first end 34 of the open side of groove 50 away from main body.The depth of circumferential recess 50 is about 2 millis Rice.

In this example, antelabium 46 substantially with longitudinal axis parallel.

With reference to Fig. 3, it illustrates the tubular body 60 before the compression according to the utility model embodiment.Tubular body 60 With Frusto-conical region, it narrows to form feeder neck from compressible portion 69 towards first end 64.Charging The first end of device neck 64 is made up of antelabium 66, and it will be contacted in use with pattern plate 2.In this example, antelabium is stretched into To in the hole.

Compressible portion 69 includes the kink 62 of three " inside ".Kink 62 can be considered the first area of alternating series 62a and second area 62b.Angle [alpha] and β are respectively 50 °.Angle, θ and Φ are respectively 80 °.All kinks have identical diameter； Tubular body can be considered the shape with cylinder.

As for the embodiment of Fig. 2 b, the second end 68 forms the annular flange flange for expanding outwardly with circumferential recess 70.

It should be appreciated that the presence or absence of of the annular flange flange of the second end is formed, described at the first end The quantity and angle of antelabium, the groove in the flange and the kink in compressible region all can be according to specific embodiment And be changed independently.

Claims (19)

1. the feeder element of metal casting is used for, and it includes：

Tubular body (10；20；30；40；60), it limits hole therethrough, and with first end (14；24；34；64) and Relative the second end (18；28；38；68) compressible portion (19 and between the first end and the second end； 39；69), the compressible portion (19；39；69) with the first area (12a including alternating series；32a；62a) with second Region (12b；32b；Step-like configuration 62b) so that in use during applying power, the then first end and second end The distance between portion is reduced；And

The feeder element is made up of the steel with carbon content by weight less than 0.05%.

2. the feeder element for metal casting according to claim 1, wherein the compressible portion (19；39； 69) including at least three kinks (12；32；62), wherein each kink is by a pair adjacent first area (12a；32a；62a) and Second area (12b；32b；62b) formed.

3. the feeder element for metal casting according to claim 1, wherein the tubular body (10；20；30； 40；60) with longitudinal axis (Z), in the first area (12a；32a；62a) the angle formed between the longitudinal axis α, and in the second area (12b；32b；62b) the angle beta formed between the longitudinal axis, the angle [alpha] and institute State angle beta and be respectively at least 35 ° and less than or equal to 55 °.

4. the feeder element for metal casting according to arbitrary aforementioned claim, wherein in kink before compacting (12；32；62) the exterior angle Φ in is at least 70 ° and is less than or equal to 120 °.

5. the feeder element for metal casting according to any one of claim 1 to 3, wherein before compacting Adjacent first area (12a；32a；62a) with second area (12b；32b；Interior angle θ between 62b) is at least 60 ° and is less than Or equal to 120 °.

6. the feeder element for metal casting according to claim 2, wherein the diameter direction of the kink (32) The tubular body (30；40) the first end (34) reduces.

7. the feeder element for metal casting according to claim 2 or claim 6, wherein all of kink (12；62) with identical diameter.

8. the feeder element for metal casting according to any one of claim 1 to 3, wherein incompressible area Domain (4) is arranged between the second end (18) of the tubular body (10) and the compressible portion (19).

9. the feeder element for metal casting according to claim 8, wherein the side in the incompressible region (4) Wall is cylindrical, and parallel to the longitudinal axis (Z) of the main body.

10. the feeder element for metal casting according to claim 8, wherein the incompressible region (4) Highly corresponding at least the 20% of the tubular body (10) height.

11. feeder elements for metal casting according to any one of claim 1 to 3, wherein the tubulose master Body (20；30；40；60) the second end section (68；38；28) expand outwardly to form flange.

12. feeder elements for metal casting according to claim 11, wherein the flange is annular.

13. feeder elements for metal casting according to claim 11, wherein the flange includes at least one Circumferential recess (50；70), the circumferential recess has away from the tubular body (40；60) the first end (34；64) Open side.

14. feeder elements for metal casting according to claim 13, wherein the circumferential recess (50；70) have There is the depth less than 3 millimeters.

15. feeder elements for metal casting according to any one of claim 1 to 3, wherein the tubulose master Body (10；20；30；40；60) with the quality less than 50 grams.

16. feeder elements for metal casting according to any one of claim 1 to 3, wherein the tubulose master Body (10；20；30；40；60) thickness is at least 0.1 millimeter.

17. feeder elements for metal casting according to any one of claim 1 to 3, wherein the tubulose master Body (10；20；30；40；60) with frusto-conical region, it is from compressible portion (19；39；69) towards the first end Portion (14；24；34；64) narrow.

18. feeder elements for metal casting according to any one of claim 1 to 3, wherein the tubulose master The first end (64) of body (60) is made up of annular lip (66).

19. feeder elements for metal casting according to claim 17, wherein the tubular body (10；40) The first end (14；34) by the antelabium (16 of the longitudinal axis for being roughly parallel to the tubular body；46) constitute.