CN208800558U - A kind of hollow cast ingot - Google Patents
A kind of hollow cast ingot Download PDFInfo
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- CN208800558U CN208800558U CN201821544374.XU CN201821544374U CN208800558U CN 208800558 U CN208800558 U CN 208800558U CN 201821544374 U CN201821544374 U CN 201821544374U CN 208800558 U CN208800558 U CN 208800558U
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Abstract
The utility model discloses a kind of hollow cast ingots, for going out seamless tubular goods by extrusion forming of perforating, including ingot casting ontology, ingot casting ontology offers stair-stepping through-hole along the direction of extrusion, through-hole includes end to end limit hole and venthole, the aperture of the limit hole is greater than the outer diameter of corresponding squeezing needle, and the aperture of the venthole meets ingot casting ontology airway segment when the squeezing needle is perforated and is extruded mold to keep being vented.Using the hollow cast ingot, in squeezing needle perforation, airway segment is extruded mold to keep being vented, thus outside air can smoothly enter into inside product, product is avoided to generate the chamber that collapses, meanwhile the step of without carrying out punching exhaust to product front end, simplifying production operation and the requirement to equipment reduces.Meanwhile being extruded with airway segment, which has ingot casting defect in inner surface and pollutant, has more inner cavity metal to be directly extruded by perforation system, ensure that product has good inner surface quality.
Description
Technical field
The utility model relates to extrusion technique fields, more specifically to a kind of hollow cast ingot.
Background technique
There are two types of production methods for existing seamless tubular goods and hollow profile, and one is hollow ingot extruding, and one is solid ingots to wear
Hole squeezes.For hollow ingot since inner cavity is second-rate, defective or pollutant can be brought into product inner surface.Solid ingot perforation meeting
Inner surface quality is largely improved, but since a part of metal being pierced by can block product head end, product inner cavity is caused to be in
Vacuum state can be generated and obviously be collapsed under atmospheric pressure effect, that is, collapse chamber, thus when usually used solid ingot perforation extruding, it needs
It to punch exhaust in time after product head end extrusion die, prevent product from the chamber that collapses occurred by gas pressure.
However aforesaid operations mode has biggish limitation: firstly, beam aperture wants short before extruder and opening is big, to facilitate behaviour
Making personnel can punch in time after product hollow parts go out die hole, secondly, needing to configure nailing gun, operator needs special peace
Staff training, severe operational environment.
In conclusion how to efficiently solve inner surface quality when seamless pipe and hollow profile are squeezed using hollow cast ingot
Difference or the problems such as limitation is big when squeezing of being perforated using solid ingot, are current those skilled in the art's problems to be solved.
Utility model content
In view of this, the structure design of the hollow cast ingot can the purpose of this utility model is to provide a kind of hollow cast ingot
To efficiently solve seamless pipe and inner surface quality difference or be perforated using solid ingot when hollow profile is squeezed using hollow cast ingot
Limitation big problem when extruding.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of hollow cast ingot, for going out seamless tubular goods, including ingot casting ontology, the ingot casting ontology by extrusion forming of perforating
Stair-stepping through-hole is offered along the direction of extrusion, the through-hole includes end to end limit hole and venthole, the limit hole
Aperture be greater than corresponding squeezing needle outer diameter, the aperture of the venthole meets the ingot casting ontology and perforates in the squeezing needle
Shi Suoshu airway segment is extruded mold to keep being vented.
Preferably, in above-mentioned hollow cast ingot, the aperture of the venthole is the 10%-20% of the ingot casting body width.
Preferably, in above-mentioned hollow cast ingot, the aperture of the limit hole is greater than the outer diameter 5mm- of the corresponding squeezing needle
15mm。
Preferably, in above-mentioned hollow cast ingot, the aperture of the limit hole is greater than the outer diameter 10mm of corresponding squeezing needle.
Preferably, in above-mentioned hollow cast ingot, the seamless tubular goods includes seamless pipe or hollow profile.
Hollow cast ingot provided by the utility model, for going out seamless tubular goods, including ingot casting ontology by extrusion forming of perforating,
Ingot casting ontology offers stair-stepping through-hole along the direction of extrusion, and through-hole includes end to end limit hole and venthole, limit hole
Aperture be greater than corresponding squeezing needle outer diameter, the aperture of venthole meet ingot casting ontology squeezing needle perforation when airway segment
Mold is extruded to keep being vented.
When forming seamless tubular goods using hollow cast ingot provided by the utility model, hollow cast ingot is placed in extrusion equipment first
In, then squeezing needle is perforated, and squeezing needle front end airway segment is first squeezed pressing and is pierced by, and forms front inner diameter smaller part
Point.Residual metallic is squeezed out by squeezing axis again, is formed and the consistent product section of seamless tubular goods shape to be formed.It is most laggard
Row finished product sawing, cuts out front inner diameter smaller portions, and remaining rear portion product is consistent with seamless tubular goods shape to be formed
Product.Since hollow cast ingot has venthole, the aperture of venthole meets ingot casting ontology airway segment in squeezing needle perforation
Mold is extruded to keep being vented, thus outside air can smoothly enter into inside product, and product is avoided to generate the chamber that collapses, meanwhile, nothing
The step of punching exhaust need to be carried out to product front end, simplifying production operation and the requirement to equipment reduces.Meanwhile with venthole
Part is extruded, which has ingot casting defect in inner surface and pollutant, has more inner cavity metal straight by perforation system
Extrusion is connect, ensure that product has good inner surface quality.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the preperforative structural schematic diagram of hollow cast ingot of one specific embodiment of the utility model；
Fig. 2 is the structural schematic diagram in extrusion process.
It is marked in attached drawing as follows:
Ingot casting ontology 1, limit hole 11, venthole 12, extrusion cylinder 2, mold 3, squeezing needle 4 squeeze axis 5, and needle point 6 squeezes
Pad 7, front inner diameter smaller portions 8, product section 9.
Specific embodiment
The utility model embodiment discloses a kind of hollow cast ingot, to improve product inner surface quality, while avoiding front end
Vacuum is formed, the link of punching exhaust is saved.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-Fig. 2 is please referred to, Fig. 1 is the preperforative structural representation of hollow cast ingot of one specific embodiment of the utility model
Figure；Fig. 2 is the structural schematic diagram in extrusion process.
In a specific embodiment, hollow cast ingot provided by the utility model, for going out nothing by extrusion forming of perforating
The shape of slit-tube material, including ingot casting ontology 1, ingot casting ontology 1 can be set as needed, such as round or cubic, not make herein
It is specific to limit.Ingot casting ontology 1 offers stair-stepping through-hole along the direction of extrusion, and through-hole includes end to end limit hole 11 and leads to
Stomata 12.Preferably, through-hole is opened up along the axis of ingot casting ontology 1, consequently facilitating subsequent perforation and extruding.Through-hole is stepped,
One end is the biggish limit hole 11 of internal diameter, and for positioning when perforating and squeezing to squeezing needle 4, the other end is the lesser ventilation of internal diameter
Hole 12 enables to mold with subsequent be pressed further by for being extruded to form front inner diameter smaller portions 8 in perforation
Product section 9 be connected to, keep ventilation, avoid generating and collapse chamber.
The aperture of limit hole 11 is greater than the outer diameter of corresponding squeezing needle 4, it is preferred that the aperture of limit hole 11 is greater than corresponding
The outer diameter 5mm-15mm of squeezing needle 4, most preferably, the aperture of limit hole 11 are greater than the outer diameter 10mm of corresponding squeezing needle 4, thus
Squeezing needle 4 is facilitated to penetrate.The shape of squeezing needle 4 is correspondingly arranged according to the lumen shape of seamless tubular goods to be formed, herein
It is not especially limited.
The aperture of venthole 12 meets 12 part of venthole when squeezing needle 4 is perforated of ingot casting ontology 1 and is extruded mold 3 to protect
Hold exhaust.The aperture of venthole 12 is much smaller than existing conventional hollow cast ingot, thus in extrusion process, venthole 12 when perforation
Part can be extruded mold 3, and outside air is enable to can smoothly enter into inside product.Certainly, the aperture greater than venthole 12 is less than
Squeezing needle 4 acts on 6 outer diameter of needle point of ingot casting ontology 1.The pore size of venthole 12 specifically can be according to the outer of ingot casting ontology 1
Diameter is arranged accordingly, to guarantee that it retains venthole 12 by integral extrusion in perforation.
Preferably, the aperture of venthole 12 is the 10%-20% of 1 width of ingot casting ontology.It is circle in 1 shape of ingot casting ontology
In the case where, then the aperture of venthole 12 is the 10%-20% of 1 outer diameter of ingot casting ontology.The pore size control of venthole 12 is above-mentioned
In range, it can effectively ensure that ingot casting ontology 1 is extruded mold 3 when squeezing needle 4 is perforated to keep being vented in 12 part of venthole.
By taking the outer diameter of ingot casting ontology 1 is 260mm as an example, then the pore diameter range of venthole 12 is 50-100mm.When extruding, before squeezing needle 4
It holds the metal having more first to be squeezed pressing 4 to be pierced by, forms tubing front end portion internal diameter smaller portions, this part metals is in ingot casting
Surface defect and pollutant, when finished product sawing, should cut off, and rear part is satisfactory product.
In the above-described embodiments, seamless tubular goods includes seamless pipe or hollow profile.Namely seamless tubular goods can be nothing
Stitch round tube, or hollow profile is needed to be arranged, is not especially limited herein with specific reference to molding.
When forming seamless tubular goods using hollow cast ingot provided by the utility model, hollow cast ingot is placed in extrusion equipment first
In, then squeezing needle 4 is perforated, and 4 front end venthole of squeezing needle, 12 part is first squeezed pressing 4 and is pierced by, formed front inner diameter compared with
Fraction 8.Residual metallic is squeezed out by squeezing axis 5 again, is formed and the consistent product section of seamless tubular goods shape to be formed
9.Finished product sawing is finally carried out, front inner diameter smaller portions 8 are cut out, remaining rear portion product is and seamless tubular goods shape to be formed
The consistent product of shape.Since hollow cast ingot has venthole 12, the aperture of venthole 12 meets ingot casting ontology 1 and wears in squeezing needle 4
12 part of venthole is extruded mold 3 to keep being vented when hole, thus outside air can smoothly enter into inside product, avoid product
Generation is collapsed chamber, meanwhile, without the step of carrying out punching exhaust to product front end, simplify production operation and the requirement drop to equipment
It is low.Meanwhile being extruded with 12 part of venthole, which has ingot casting defect in inner surface and pollutant, has more interior
Chamber metal is directly extruded by perforation system, ensure that product has good inner surface quality.
When forming seamless tubular goods by perforation extrusion process using the hollow cast ingot provided in above-described embodiment, including it is following
Step:
S1: using any hollow cast ingot in above-described embodiment, hollow cast ingot is placed in extrusion equipment.
Extrusion equipment can specifically include extrusion cylinder 2, the mold 3 of 2 front end of extrusion cylinder is set to, for pushing hollow cast ingot
Extruding axis 5 and the squeezing needle 4 for perforation, the forward tip 6 of squeezing needle 4 act on hollow cast ingot.Squeezing 5 leading portion of axis can be with
Dummy block 7 is set to push ingot casting ontology 1.Refer to the prior art for the structure and working principle of specific above-mentioned each component, herein
It repeats no more.Hollow cast ingot is placed in first in extrusion cylinder 2, and front end offsets with mold 3.
S2: perforation, 4 front end venthole of squeezing needle, 12 part are first squeezed pressing 4 and are pierced by, and form front inner diameter smaller portions 8.
Squeezing needle 4 first pushes, and 6 outer diameter of needle point that squeezing needle 4 acts on ingot casting ontology 1 is greater than the aperture of venthole 12, into
And squeeze out the metal of its front end, that is, 12 part of venthole is first extruded mold 3, since the presence of venthole 12 to squeeze
Part has inner cavity out, to be connected to the product section 9 of subsequent forming, guarantees that gas flowing is unobstructed.It should be noted that herein
Front inner diameter smaller portions 8, refer to perforation squeeze out part internal diameter compared to molding 9 internal diameter of product section of subsequent extrusion compared with
It is small.
S3: squeezing, and squeezes axis 5 and squeezes out residual metallic, is formed and the consistent product department of seamless tubular goods shape to be formed
Divide 9.After punch off, squeeze axis 5 and squeeze out residual metallic, by the mold cavity forming that mold 3 and squeezing needle 4 are formed go out at
The consistent product section 9 of the seamless tubular goods shape of type.
S4: finished product sawing cuts out front inner diameter smaller portions 8, and remaining rear portion product is and seamless tubular goods to be formed
The consistent product of shape.Since leading portion internal diameter smaller portions have ingot casting defect in inner surface and pollutant, thus first cut out,
Part is the product of composite demand afterwards.
Further, in the perforation extrusion process of above-mentioned seamless tubular goods, seamless tubular goods to be formed includes seamless circular to be formed
Pipe or hollow profile.Namely seamless tubular goods can be seamless pipe, or hollow profile needs to set with specific reference to molding
It sets, is not especially limited herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (5)
1. a kind of hollow cast ingot, for going out seamless tubular goods by extrusion forming of perforating, which is characterized in that including ingot casting ontology, institute
It states ingot casting ontology and offers stair-stepping through-hole along the direction of extrusion, the through-hole includes end to end limit hole and venthole,
The aperture of the limit hole is greater than the outer diameter of corresponding squeezing needle, and the aperture of the venthole meets the ingot casting ontology described
The airway segment is extruded mold to keep being vented when squeezing needle perforation.
2. hollow cast ingot according to claim 1, which is characterized in that the aperture of the venthole is that the ingot casting ontology is wide
The 10%-20% of degree.
3. hollow cast ingot according to claim 1, which is characterized in that the aperture of the limit hole is greater than corresponding described crowded
The outer diameter 5mm-15mm of pressing.
4. hollow cast ingot according to claim 1, which is characterized in that the aperture of the limit hole is greater than corresponding squeezing needle
Outer diameter 10mm.
5. hollow cast ingot according to claim 1-4, which is characterized in that the seamless tubular goods includes seamless pipe
Or hollow profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821544374.XU CN208800558U (en) | 2018-09-20 | 2018-09-20 | A kind of hollow cast ingot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821544374.XU CN208800558U (en) | 2018-09-20 | 2018-09-20 | A kind of hollow cast ingot |
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| Publication Number | Publication Date |
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| CN208800558U true CN208800558U (en) | 2019-04-30 |
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| CN201821544374.XU Active CN208800558U (en) | 2018-09-20 | 2018-09-20 | A kind of hollow cast ingot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941226A (en) * | 2018-09-20 | 2018-12-07 | 西南铝业（集团）有限责任公司 | A kind of the perforation extrusion process and hollow cast ingot of seamless tubular goods |
-
2018
- 2018-09-20 CN CN201821544374.XU patent/CN208800558U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941226A (en) * | 2018-09-20 | 2018-12-07 | 西南铝业（集团）有限责任公司 | A kind of the perforation extrusion process and hollow cast ingot of seamless tubular goods |
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