CN209287987U - A kind of J section steel extrusion die - Google Patents
A kind of J section steel extrusion die Download PDFInfo
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- CN209287987U CN209287987U CN201822001150.0U CN201822001150U CN209287987U CN 209287987 U CN209287987 U CN 209287987U CN 201822001150 U CN201822001150 U CN 201822001150U CN 209287987 U CN209287987 U CN 209287987U
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Abstract
The utility model relates to a kind of J section steel extrusion dies, belong to profile shapes hot extrusion forming technology field, for solving the problems, such as to use welding product precision after splicing to be unable to reach design requirement without hot-extrusion mold and the molding of existing J section steel that production section is J section steel material in the prior art.The J section steel extrusion die main body of the utility model is cylindrical body, and the J-type through-hole along cylinder length direction is equipped in cylindrical body, and J-type through-hole includes that width is H2Top and width be H3It is following；Deviate 1.85 °~1.90 ° away from the direction of the end face of discharge end in the end of cylindrical body feed end；Deviate 1 °~2 ° to the direction far from top below.The dimensional accuracy for the J section steel that the mold of the utility model squeezes out can reach design requirement.
Description
Technical field
The utility model relates to profile shapes hot extrusion forming technology field more particularly to a kind of J section steel extrusion dies.
Background technique
Section is that J section steel material belongs to extraordinary profile shapes, is applied to the fields such as Aeronautics and Astronautics, naval vessel, since its shape has
Cleanliness, therefore be good load-carrying construction.
J section steel has the characteristics that asymmetry is inconsistent with wall thickness completely, and when being squeezed using traditional dies, squeeze wood is easily sent out
Deformation, the J section steels squeezed out such as raw significantly bending, torsion are not able to satisfy requirement.
The forming method of the J section steel of this complicated abnormal shape is generally using the method welded after splicing at home, without using
Hot extrusion molding method, suitable for produce section be J section steel material hot-extrusion mold there is not yet document report.
Utility model content
In view of above-mentioned analysis, the utility model is intended to provide a kind of J section steel extrusion die, at least can solve following skill
One of art problem: (1) hot-extrusion mold that section is J section steel material is not produced；(2) forming method of existing J section steel is using spelling
The method welded after connecing, Product Precision are unable to reach design requirement.
The purpose of this utility model is mainly achieved through the following technical solutions:
The utility model discloses a kind of J section steel extrusion die, the main body of the extrusion die is cylindrical body, in the circle
The J-type through-hole along cylinder length direction is equipped in cylinder, the J-type through-hole includes that width is H2Top and width be H3's
Below；Deviate 1.85 °~1.90 ° away from the direction of the end face of discharge end in the end of the cylindrical body feed end；It is described following
Deviate 1 °~2 ° to the direction far from top.
On the basis of above scheme, the utility model has also done following improvement:
Further, in the J-type through-hole broadside inner edge chamfering be less than narrow side inner edge chamfering.
Further, H2For 25~27mm, H3For 10.5~11.5mm.
Further, the width in hole is H2Inner edge, process the angled chamfering for being 11 °~12 °；Width in hole is H3
Inner edge, process the angled chamfering for being 18 °~19 °.
Further, the extrusion die processes the angled chamfering for being 15 °~16 ° with the vertical portion being connected below.
Further, the length of the top is 142~146mm, and the following length is 147~148mm.
Further, the radius difference of the medial and lateral radian between the J section steel mold J-type structure top and vertical portion
For 40~41mm, 20~21mm.
Further, J-type structure below the inside radian between vertical portion radius be 30~31mm.
Further, the outer diameter of the cylindrical body is 315~316mm, is highly 20~30mm.
Further, the chamfer height of top is 8.5~8.7mm, and following chamfer height is 12~13mm.
The utility model can at least realize one of following beneficial effect:
(1) if be between two end faces of mold cylinder body it is parallel, in hot extrusion process, since hole is wide
Spend that wider local resistance is small, and hole width it is relatively narrow local resistance it is big, cause blank preferentially to squeeze in the wider place of hole width
It extrudes, so that squeezing out blank head end face is inclined-plane, to deform, the utility model is by the end of mold cylinder body feed end
Deviate away from the direction of the end face of discharge end, is i.e. there is 1.85 °~1.90 ° of angle, blank is first between two end faces
One side of the narrower width in J-type hole on mold is contacted, guarantees that wider width and relatively narrow ground square billet squeeze out that (end face is flat simultaneously
Face), the deformation of extrusion process is reduced, guarantees that the dimensional accuracy of the J section steel material squeezed out using the mold reaches design requirement.
(2) in hot extrusion process, narrow side is easy to be curved inwardly by tensile stress, and the utility model width is H3It is following
It is H with width2Top between not instead of parallel relation, will below to the direction far from top deviate 1 °~2 °, i.e. top
And it is following between with 1 °~2 ° of angle, curved inwardly to offset narrow side in hot extrusion process by tensile stress, and energy
It is enough to solve due to the caused D that expands with heat and contract with cold1And D2Size be unsatisfactory for the problems such as requiring.
(3) small compared with broadside inner edge chamfering in the hole of J-type in the utility model, relatively narrow side inner edge chamfering is big, above-mentioned design
Be conducive to blank in hot extrusion process to avoid severely deformed uniformly through J-type hole.
(4) pass through the H of the wider width in hole2Inner edge machining angle be 11 °~12 ° of chamfering, hole width compared with
Narrow H3Inner edge machining angle be 18 °~19 ° of chamfering, and the width in hole is H4Inner edge machining angle be 15 °~
16 ° of chamfering, because crush resistance is small at the wider width in hole, and crush resistance is big at the narrower width in hole, in order to make difference
Crush resistance at width is close, thus make blank the wide and narrow position of pass uniformly through, in the utility model J-type hole compared with
The inner edge chamfering of broadside is small, and the inner edge chamfering of narrow side is big, thus be conducive in hot extrusion process blank uniformly through J-type hole,
So that tensile stress is reduced to minimum, and the stress on squeeze wood is uniformly discharged, to guarantee the product size squeezed out essence
Degree reaches design requirement.
It in the utility model, can also be combined with each other between above-mentioned each technical solution, to realize more preferably combination sides
Case.Other feature and advantage of the utility model will illustrate in the following description, also, certain advantages can be from specification
It becomes apparent, or is understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
Specifically noted content is achieved and obtained in bright book, claims and attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not considered as limitations of the present invention, entire
In attached drawing, identical reference symbol indicates identical component.
Fig. 1 is the main view of the utility model embodiment J section steel hot extrusion mold；
Fig. 2 is the A-A direction view of Fig. 1；
Fig. 3 is the B-B direction view of Fig. 1；
Fig. 4 is the J section steel size detection schematic diagram squeezed out using the hot-extrusion mold of the utility model.
Appended drawing reference:
The end face of 1- feed end；The end face of 2- discharge end.
Specific embodiment
Specifically describe the preferred embodiment of the utility model with reference to the accompanying drawing, wherein attached drawing constitutes the application one
Point, and be used to illustrate the principles of the present invention together with the embodiments of the present invention, it is not intended to limit the utility model
Range.
The utility model discloses a kind of J section steel hot extrusion molds, as shown in Figs. 1-3.Die main body is cylindrical body,
The J-type through-hole along cylinder length direction is equipped in cylindrical body, J-type through-hole includes that width is H2Top and width be H3Under
Side.The end face 1 of cylindrical body feed end to far from discharge end end face 2 direction deviation angle a1 be 1.85 °~1.90 °.
It specifically, is that the narrower width in J-type hole protrudes outward certain angle on one side on mold, as shown in Figure 3.Heat
When extruding, blank enters from feed end, protrudes outward certain angle on one side due to narrower width, so, blank connects first
Contact one side of the narrower width in J-type hole, after touch J-type hole wider width one side.After hot extrusion, blank is from mould
The discharge end of tool squeezes out, and becomes J section steel material.
Compared with prior art, it is designed between two end faces of J section steel extrusion die cylindrical body provided by the utility model
Guarantee for the angle with 1.85 °~1.90 ° so as to effectively mitigate the deformation of narrow side in hot extrusion process and pull
The dimensional accuracy of the J section steel material squeezed out using the mold reaches design requirement.
In view of in hot extrusion process, narrow side is easy to be curved inwardly by tensile stress, and therefore, the utility model width is
H3Following and width be H2Top between not instead of parallel relation, will be designed as between bottom and upper segment with certain
Angle.Specifically, be below to far from top direction deviation angle a2 be 1 °~2 °, to offset narrow in hot extrusion process
While being curved inwardly by tensile stress, and it is able to solve due to the caused D that expands with heat and contract with cold1And D2Size be unsatisfactory for require etc. ask
Topic.
It is worth noting that, if the inner edge chamfering on relatively narrow side with it is identical compared with broadside inner edge chamfering, blank squeeze
It can be severely deformed during pressure.Small compared with broadside inner edge chamfering in the hole of J-type in the utility model, relatively narrow side inner edge chamfering is big,
Above-mentioned design is conducive to blank in hot extrusion process and avoids severely deformed uniformly through J-type hole.It will be apparent that inner edge chamfering
It is the inward flange that feed end is set along hole, rather than discharge end is along the inward flange in hole.Because if chamfering setting in inner edge is going out
Expect end along the inward flange in hole, then, when blank passes through J-type through-hole by hot extrusion, due to the presence of chamfering, so that squeezing
J-type fashioned iron out is easily deformed in discharge end, affects the precision for the J-type fashioned iron sectional dimension produced instead, this and this reality
The technical problem to be solved is that run counter to novel.
Illustratively, the width in hole is H2Inner edge, process the angled chamfering a3, chamfer height b1 for being 11 °~12 °
For 8.5~8.7mm；Width in hole is H3Inner edge, process the angled chamfering a4 for being 18 °~19 °, chamfer height b2 is 12
~13mm；Width in hole is H4Inner edge, process the angled chamfering a5 for being 15 °~16 °, chamfer height b3 is 10.5~
10.7mm.Because crush resistance is small at the wider width in hole, and crush resistance is big at the narrower width in hole, in order to make different in width
The crush resistance at place is close, to make blank in the wide and narrow position of pass uniformly through J-type hole is compared with broadside in the utility model
Inner edge chamfering it is small, the inner edge chamfering of narrow side is big, so that be conducive to blank in hot extrusion process makes to draw uniformly through J-type hole
Stress is reduced to minimum, and the stress on squeeze wood is uniformly discharged, to guarantee that the product size precision squeezed out reaches
To design requirement.
Embodiment one
Die main body is the cylindrical body with J-type hole in the present embodiment, and thickness (or height) is 20mm.J-type pore size with
The size of required squeeze wood is corresponding.Die main body is cylindrical body, the end face of the end of cylindrical body feed end away from discharge end
Direction deviate 1.85 °.The width H in J-type hole2For 25mm, in H2Inner edge, processing chamfer angle is 11 °, and chamfer height is
8.5mm；The width H in J-type hole3For 10.5mm, in the H of the narrower width in hole3Position, processing inner edge chamfer angle be 18 °,
Angle height is 12mm；The width H in J-type hole4For 10.5mm, the width in hole is H4Inner edge, processing chamfer angle be 15 °, J-type
Hole width be H3It is following be H with width2Top between angle be 1 °；The width H in J-type hole1For 20mm.J-type hole it is upper
The length L on side1For 142mm, following length L2For 147mm.The radius R of circular arc1For 30mm, R2For 40mm, R3For 20mm, such as scheme
Shown in 4.
Embodiment two
Die main body is the cylindrical body with J-type hole in the present embodiment, and thickness (or height) is 30mm.J-type pore size with
The size of required squeeze wood is corresponding.Die main body is cylindrical body, the end face of the end of cylindrical body feed end away from discharge end
Direction deviate 1.90 °.The width H in J-type hole2For 27mm, in H2Inner edge, processing chamfer angle is 12 °, and chamfer height is
8.7mm；The width H in J-type hole3For 11.5mm, in the H of the narrower width in hole3Position, processing inner edge chamfer angle be 19 °,
Angle height is 13mm；The width H in J-type hole4For 11.5mm, the width in hole is H4Inner edge, processing chamfer angle be 16 °, J-type
Hole width be H3It is following be H with width2Top between angle be 2 °；The width H in J-type hole1For 21mm.J-type hole it is upper
The length L on side1For 146mm, following length L2For 148mm.Arc radius R1For 31mm, R2For 41mm, R3For 21mm, such as Fig. 4
It is shown.
Embodiment three
Die main body is the cylindrical body with J-type hole in the present embodiment, and thickness (or height) is 25mm.J-type pore size with
The size of required squeeze wood is corresponding.Die main body is cylindrical body, the end face of the end of cylindrical body feed end away from discharge end
Direction deviate 1.88 °.The width H in J-type hole2For 26mm, in H2Inner edge, processing chamfer angle is 12 °, and chamfer height is
8.6mm；The width H in J-type hole3For 11mm, in the H of the narrower width in hole3Position, processing inner edge chamfer angle be 19 °, chamfering
Height is 12.5mm；The width H in J-type hole4For 11mm, the width in hole is H4Inner edge, processing chamfer angle be 16 °, J-type
Hole width is H3It is following be H with width2Top between angle be 2 °；The width H in J-type hole1For 21mm.The top in J-type hole
Length L1For 144mm, following length L2For 148mm.Arc radius R1For 31mm, R2For 41mm, R3For 21mm, such as Fig. 4 institute
Show.
The specific value of the actual measurement size of the product squeezed out using the mold of embodiment one is shown in Table 1, uses embodiment two
The specific value of the actual measurement size of product that squeezes out of mold be shown in Table 2, the product squeezed out using the mold of embodiment three
The specific value of actual measurement size is shown in Table 3.
1 J section steel critical size of table measures table
Note: being the head of J section steel from the part that extrusion die first comes out, and the part finally come out is the tail portion of J section steel.
2 J section steel critical size of table measures table
3 J section steel critical size of table measures table
By table 1-3 it is found that the size and tolerance of the product squeezed out using the mold of embodiment one to three meet GB/T
702 standard requirements.The section that the J section steel extrusion die of the utility model squeezes out is that the dimensional accuracy of J section steel material can reach
Design requirement.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.
Claims (10)
1. a kind of J section steel extrusion die, which is characterized in that the main body of the extrusion die is cylindrical body, in the cylindrical body
Equipped with the J-type through-hole along cylinder length direction, the J-type through-hole includes that width is H2Top and width be H3It is following；Institute
Deviate 1.85 °~1.90 ° away from the direction of the end face of discharge end in the end for stating cylindrical body feed end；It is described below to far from upper
Deviate 1 °~2 ° in the direction on side.
2. J section steel extrusion die according to claim 1, which is characterized in that the inner edge chamfering of broadside in the J-type through-hole
Less than the inner edge chamfering of narrow side.
3. J section steel extrusion die according to claim 1 or 2, which is characterized in that H2For 25~27mm, H3For 10.5~
11.5mm。
4. J section steel extrusion die according to claim 2, which is characterized in that the width in hole is H2Inner edge, be machined with
The chamfering that angle is 11 °~12 °；Width in hole is H3Inner edge, process the angled chamfering for being 18 °~19 °.
5. J section steel extrusion die according to claim 4, which is characterized in that the extrusion die is erected with what is be connected below
Directly partially process the angled chamfering for being 15 °~16 °.
6. J section steel extrusion die according to claim 1, which is characterized in that the length of the top is 142~146mm,
The following length is 147~148mm.
7. J section steel extrusion die according to claim 2, which is characterized in that the J section steel mold J-type structure top with
Medial and lateral radius of the radian between vertical portion is respectively 40~41mm, 20~21mm.
8. J section steel extrusion die according to claim 7, which is characterized in that J-type structure is below between vertical portion
The radius of inside radian is 30~31mm.
9. J section steel extrusion die according to claim 8, which is characterized in that the outer diameter of the cylindrical body be 315~
316mm is highly 20~30mm.
10. J section steel extrusion die according to claim 9, which is characterized in that the chamfer height of top be 8.5~
8.7mm, following chamfer height are 12~13mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822001150.0U CN209287987U (en) | 2018-11-30 | 2018-11-30 | A kind of J section steel extrusion die |
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| CN201822001150.0U CN209287987U (en) | 2018-11-30 | 2018-11-30 | A kind of J section steel extrusion die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451309A (en) * | 2020-04-15 | 2020-07-28 | 钢铁研究总院 | Hot extrusion die for special-shaped square pipe and hot extrusion integral forming method |
-
2018
- 2018-11-30 CN CN201822001150.0U patent/CN209287987U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111451309A (en) * | 2020-04-15 | 2020-07-28 | 钢铁研究总院 | Hot extrusion die for special-shaped square pipe and hot extrusion integral forming method |
| CN111451309B (en) * | 2020-04-15 | 2021-08-03 | 钢铁研究总院 | Hot extrusion die for special-shaped square pipe and hot extrusion integral forming method |
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