CN206811135U - Assembling die for the production of hard alloy micropore heterotype tubing - Google Patents
Assembling die for the production of hard alloy micropore heterotype tubing Download PDFInfo
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- CN206811135U CN206811135U CN201720575887.6U CN201720575887U CN206811135U CN 206811135 U CN206811135 U CN 206811135U CN 201720575887 U CN201720575887 U CN 201720575887U CN 206811135 U CN206811135 U CN 206811135U
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Abstract
The utility model discloses a kind of assembling die for the production of hard alloy micropore heterotype tubing, mainly it is made up of bottom end cover, core bar, overcoat, inner sleeve and upper end cover；Core bar both ends are individually fixed in bottom end cover and upper end cover；Inner sleeve is bonded with bottom end cover and upper end cover end face and die cavity is formed between core bar；Overcoat is tightly placed on bottom end cover and upper end cover outer wall, from radially surrounding core bar, on the inside of overcoat with inner sleeve contact outside.The utility model is used for the assembling die of hard alloy micropore heterotype tubing production, passes through provided combining structure, can produce micropore heterotype tubing, solves the problems, such as that ratio of height to diameter is difficult to be molded greatly and form and position tolerance is poor during producing blank.
Description
Technical field
The utility model belongs to hard alloy tubing production technical field, is related to a kind of CEMENTED CARBIDE PRODUCTION combination die
A kind of tool, and in particular to assembling die for the production of hard alloy micropore heterotype tubing.
Background technology
Isostatic cool pressing technology is a kind of to make dusty material in closed pressure vessel or base substrate in each super-pressure pressure to equalization
The advanced manufacturing technology of the lower shaping of power effect.The compacting product consistency that is obtained by isostatic cool pressing method is high, Density Distribution uniformly,
Isotropic performance is good, has traditional material forming method when suppressing big overall size, complex-shaped, ratio of height to diameter is big product
Incomparable advantage, it is now widely used for the manufacture fields such as powder metallurgy, graphite, ceramics, plastics and refractory material.
In cemented carbide industry, the production accounting of nonstandard special-shaped product is progressively expanding, and conventional compression molding has been difficult to
Meet industry development demand.Such as the tubing and large scale product that ratio of height to diameter is larger, being using conventional compression molding impossible real
Existing, it is often necessary to the mode through grinding can be only achieved the net shape of product again after molding.And in order to ensure pressed compact
Intensity and the density uniformity for improving pressed compact, isostatic cool pressing is an essential procedure.Conventional compression molding die by
In its own existing following defect, it is difficult to meet during isostatic cool pressing to the particular/special requirement of used mould：(1) it is right
In size is larger, ratio of height to diameter is big, the complex product of surface indentation or aperture is difficult to be molded；(2) pressed compact obtained by compression molding
Density inhomogeneity, deforms after sintering big, and layering, crackle easily occurs in pressed compact step and edges and corners；(3) mold body structure
Complexity, so that Making mold complex procedures, cost are high, and the manufacturing cycle is grown.
For drawbacks described above existing for conventional compression molding die, structure and performance to isostatic cool pressing mould are
Through having carried out a series of research, and make some progress, it is open such as Application No. CN96247098.8 Chinese patent
" a kind of particular manufacturing craft of cold isostatic pressing ", the particular manufacturing craft overall structure is substantially similar to existing mold, simply in external form
Flexible core is further configured with mould；Although this flexible core solves the problems, such as that rigid core bar is difficult to the demoulding, but its property
Rigidity deficiency, it is poor to the restriction effect of elastic after effect, and because axial both ends are bound, the die cavity at axial both ends can not be received completely
Contracting, expected requirement can not be reached by being easily caused the product form and position tolerance after processing；In addition, rubber die cavity insufficient strength, is also easily caused
Pressed compact profile is not carefully and neatly done enough, and size is inaccurate, is particularly unsuited for the micropore heterotype tubing that ratio of height to diameter is big, form and position tolerance is unmanageable
The production of this series hard alloy.
Utility model content
The purpose of this utility model is intended to, there is provided a kind of assembling die, the hard alloy for realizing big to ratio of height to diameter are micro-
The production of hole opposite sex tubing.
In order to achieve the above object, the utility model provides a kind of group for the production of hard alloy micropore heterotype tubing
Matched moulds has, and is mainly made up of bottom end cover, core bar, overcoat, inner sleeve and upper end cover；The core bar both ends be individually fixed in bottom end cover and
In upper end cover；The inner sleeve is bonded with bottom end cover and upper end cover end face and die cavity is formed between core bar；The overcoat is tightly placed in
On bottom end cover and upper end cover outer wall, from radially surrounding core bar, on the inside of overcoat with inner sleeve contact outside.
The above-mentioned assembling die for the production of hard alloy micropore heterotype tubing, due to being directed to micropore heterotype tubing,
Used core bar ratio of height to diameter is big, in order that core bar stable performance in forming process, it is ensured that process obtained micropore special pipe
The product quality of material, the both ends of above-mentioned core bar are fixed respectively and are limited in bottom end cover and upper end cover；Designed overcoat and interior
Set plays a part of fixed and transmits power from core bar is radially surrounded；Die cavity is formed between inner sleeve and core bar, for filling hard
The shaping of alloy powder and micropore special pipe blank.The utility model uses fabricated structure, production hard alloy micropore abnormity
Tubing blank, the consumption of raw materials of single products can be effectively reduced, solve the problems, such as that micropore heterotype tubing ratio of height to diameter is big, improve simultaneously
The control accuracy of product axial dimension and form and position tolerance.
The above-mentioned assembling die for the production of hard alloy micropore heterotype tubing, the core bar use stepped construction, core
Bar top is cylinder, and interlude is the first frustum of 0.5 °~1 ° taper, and bottom is the second frustum and the bottom of 12 °~15 ° tapers
Seat, by the first frustum of design and make the first frustum and columnar part rounding off, suppressed so as to solve micropore heterotype tubing
After shaping, the problem of core bar is difficult to；The taper of first frustum and the second frustum is by the hard alloy micropore special pipe that produces
Depending on the shape need of material blank；Core bar base bottom edge designs have chamfering, in order in core bar base insertion bottom end cover；Core
Roofbolt body upper end is arcuate structure, in order in core bar cylinder insertion upper end cover.
The above-mentioned assembling die for the production of hard alloy micropore heterotype tubing, the bottom end cover and upper end cover are respectively T
Type structure, including substrate and the boss from substrate extension；The installation matched with core bar base is designed with the bottom end cover boss
Blind hole, the installing blind matched with core bar cylinder is designed with upper end cover boss；For the ease of the assembling of overcoat, bottom end cover boss
There is chamfering with upper end cover raised head face edge designs.
The above-mentioned assembling die for the production of hard alloy micropore heterotype tubing, for the ease of Mold Making, reduce mould
Cost of manufacture, the overcoat are tightly placed on bottom end cover boss and upper end cover plateau sidewall, and inner sleeve both ends anchor ring is respectively with
End cap boss and the fitting of upper end cover raised head face.
The above-mentioned assembling die for the production of hard alloy micropore heterotype tubing, in order to avoid core bar is by axial compressive force and curved
Song fracture, it is outer that at least two pieces of arc positioning support blocks, arc positioning support block edge are provided between the bottom end cover and upper end cover
Set is circumferential to be uniformly distributed；For the ease of arc positioning support block and bottom end cover, upper end cover assembling and fixed, the arc positioning branch
Bracer both ends are designed with the step neck matched with bottom end cover pedestal and upper end cover pedestal；On the inside of arc positioning support block with
Gap is left between on the outside of overcoat, in order to which liquid pressure medium can enter and by pressure transmission to overcoat, inner sleeve and die cavity
Interior powder, it is finally completed the compressing of heterotype tubing product.
The above-mentioned assembling die for the production of hard alloy micropore heterotype tubing, in use, upper end cover, bottom end cover
Boss insertion overcoat both ends, further fixation can be tightened up with pipe collar, to prevent liquid medium from entering die cavity pollution powder；Arc
Shape positioning support block centre position can also be tightened with pipe collar, to prevent it from coming off.
Compared with prior art, the utility model has the advantages that：
1st, the utility model is used for the assembling die of hard alloy micropore heterotype tubing production, passes through provided combination knot
Structure, micropore heterotype tubing can be produced, solve production blank during ratio of height to diameter be difficult to be molded greatly and form and position tolerance compared with
The problem of poor；
2nd, the utility model is used for the assembling die of hard alloy micropore heterotype tubing production, passes through the staged knot of design
Structure core bar, core bar can be made to be easy to deviate from after micropore heterotype tubing blank is compressing, so that it is guaranteed that gained micropore special pipe
Material product quality；
3rd, the utility model is used for the assembling die of hard alloy micropore heterotype tubing production, also with simple in construction, behaviour
The characteristics of making to facilitate；
4th, the utility model is used for the assembling die of hard alloy micropore heterotype tubing production, high according to heterotype tubing product
Degree, outside dimension design core bar height and inside and outside set internal diameter size, ensure the height and excircle dimension and production of institute shaping pressed compact
Condition should be closely sized to, and only leave appropriate grinding allowance, so as to effectively reduce the material loss of single products, reduce product
Cost, improve product qualification rate.
Brief description of the drawings
Fig. 1 is the assembling die structural representation that the utility model is used for the production of hard alloy micropore heterotype tubing.
Fig. 2 is the utility model bottom end cover structural representation.
Fig. 3 is the utility model core bar structure schematic diagram.
Fig. 4 is the utility model upper end cover structural representation.
Fig. 5 is that the utility model arc positions support block front view.
Fig. 6 is that the utility model arc positions support block side view.
Wherein, 1, bottom end cover, 11, bottom end cover substrate, 12, bottom end cover boss, 13, floor installation blind hole, 2, core bar, 21,
Cylinder, the 22, first frustum, the 23, second frustum, 24, base, 3, overcoat, 4, inner sleeve, 5, die cavity, 6, upper end cover, 61, upper end cover
Substrate, 62, upper end cover boss, 63, cylinder installing blind, the 7, first pipe collar, 8, arc positioning support block, 81, step neck, 9,
Second pipe collar.
Embodiment
The utility model is further described below in conjunction with accompanying drawing：
A kind of assembling die for the production of hard alloy micropore heterotype tubing is present embodiments provided, as shown in figure 1, main
Will be by 7, two pieces of bottom end cover 1, core bar 2, overcoat 3, inner sleeve 4, upper end cover 6, the first pipe collar arc positioning pipe collars of support block 8 and second
9 compositions.The material that bottom end cover 1, core bar 2, upper end cover 6 and arc position support block 8 uses steel, mould is had necessarily firm
Property, it is ensured that the blank mouldability of acquisition；Overcoat 3 and the material of inner sleeve 4 use rubber, can be preferably mainly in isostatic cool pressing
Pressure is transmitted, while has certain hardness again, has both been easy to assemble, having can make both contact with each other more preferably.
As shown in figure 3, core bar top is cylinder 21, it is ensured that the outlet section size of micropore abnormity blank tubing；Interlude is
First frustum 22 of 0.5 °~1 ° taper, core bar 2 is easy to deviate from after being suppressed so as to blank tubing；Bottom is 12 °~15 ° tapers
Second frustum 23 and base 24, the second frustum 23 ensure that the arrival end shape of blank tubing；Base 24 is column structure, its bottom
Portion's edge designs have chamfering, in order to assemble.Due to the smaller (φ of endoporus of the hard alloy micropore heterotype tubing blank of production
0.5~3.2mm), and pipe length is longer (65.0~80.0mm), according to isometrical core bar, core bar is difficult to after isostatic cool pressing
Abjection, easily causes pressed compact to damage.Therefore, on the premise of product performance is ensured, core bar interlude is designed to 0.5 °
The frustum of~1 ° of taper, and with columnar part rounding off, can solve blank tubing it is compressing after the asking of being difficult to deviate from of core bar 2
Topic.
As shown in Fig. 2 above-mentioned bottom end cover 1 is T-type structure, including bottom end cover substrate 11 and extend from bottom end cover substrate 11
Bottom end cover boss 12；The floor installation blind hole 13 matched with core bar base 24 is designed with bottom end cover boss 12；Floor installation
The bottom design of blind hole 13 has the convenient groove of cooling down processed and assembled；The edge designs of bottom end cover boss 12 have chamfering.
As shown in figure 4, above-mentioned upper end cover 6 is T-type structure, including upper end cover substrate 61 and extend from upper end cover substrate 61
Upper end cover boss 62；The cylinder installing blind 63 matched with core bar cylinder 21 is designed with upper end cover boss 62；Upper end cover substrate
61 are designed with the escape for being easy to processing with the joint of upper end cover boss 62；The edge designs of upper end cover boss 62 have chamfering.
As shown in Figures 1 to 6, the above-mentioned assembling die assembling mode for the production of hard alloy micropore heterotype tubing is:
Core bar base 24 is inserted in the floor installation blind hole 13 of bottom end cover 1；Overcoat 3 is tightly placed on the outer wall of bottom end cover boss 12, from radially
Core bar 2 is surrounded, plays a part of fixed and transmits power；Inner sleeve 4 is fixed in bottom end cover boss surface by overcoat 3, outside inner sleeve
Wall is in close contact with outer casing inner wall, plays a part of transmitting power and bearing material；Die cavity 5 is formed between inner sleeve 4 and core bar 2, is used for
Fill cemented carbide powder and blank tube forming；Upper end cover 6 is covered on core bar 2 and inner sleeve 4, and core bar cylinder 21 inserts upper end cover
In 6 cylinder installing blind 63, while upper end cover 6 is fastened by the overcoat 3 being enclosed in upper end cover outer wall of boss, play it is fixed and
Restriction effect；Further tightened up with upper end cover boss 62,12 corresponding position of bottom end cover boss with the first pipe collar 7 at the both ends of overcoat 3
It is fixed；Two semicircle arc positioning support blocks 8 are fixed between bottom end cover 1 and upper end cover 6 by the step neck 81 of design,
And the second pipe collar 9 set by centre position fastens, and plays a part of protecting core bar 2 not by axial compressive force, while arc is determined
Gap is left between the position inner side of support block 8 and the outside of overcoat 3, being not only convenient for liquid pressure medium can enter and by pressure transmission
Powder in overcoat, inner sleeve and die cavity, is finally completed the compressing of heterotype tubing product, and is easy to the both ends first of overcoat 3
Pipe collar 7 is installed.
In wet bag cold isostatic pressing process produces hard alloy micropore tubing blank, the utility model is used for alloy water knife sand
The bulk trial of pipe blank.Water knife sandpipe blanking inner hole deviation from circular from≤0.02 after processing, the depth of parallelism at axial both ends
≤ 0.05, reach the requirement of water knife sandpipe blank key dimension.The utility model solves hard alloy micropore heterotype tubing blank
The problem of ratio of height to diameter of blank is greatly in production and form and position tolerance is poor, while the consumption of raw materials of single products can be also effectively reduced,
It is suitable for the production of hard alloy micropore heterotype tubing.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this reality
With new principle, it should be understood that the scope of protection of the utility model is not limited to such especially statement and embodiment.
One of ordinary skill in the art can these technical inspirations according to disclosed in the utility model make and various do not depart from this practicality
New substantive other various specific deformations and combination, these deformations and combination are still in the scope of protection of the utility model.
Claims (8)
1. a kind of assembling die for the production of hard alloy micropore heterotype tubing, it is characterised in that mainly by bottom end cover (1), core
Bar (2), overcoat (3), inner sleeve (4) and upper end cover (6) composition；Core bar (2) both ends are individually fixed in bottom end cover (1) and upper end
Cover in (6)；The inner sleeve (4) is bonded with upper end cover (6) end face with bottom end cover (1) and die cavity (5) is formed between core bar (2)；
The overcoat (3) is tightly placed on bottom end cover (1) and upper end cover (6) outer wall, from radially surrounding core bar (2), on the inside of overcoat (3) with it is interior
Cover (4) contact outside.
2. it is used for the assembling die of hard alloy micropore heterotype tubing production according to claim 1, it is characterised in that described
Core bar top is cylinder (21), and interlude is the first frustum (22) of 0.5 °~1 ° taper, and bottom is the of 12 °~15 ° tapers
Two frustums (23) and base (24)；In core bar cylinder (21) the insertion upper end cover (6), core bar base (24) insertion bottom end cover
(1) in.
3. the assembling die according to claim 1 or claim 2 for the production of hard alloy micropore heterotype tubing, it is characterised in that institute
State bottom end cover (1) and upper end cover (6) is respectively T-type structure, including substrate and the boss from substrate extension；The bottom end cover boss
On be designed with the installing blind matched with core bar base (24), the peace matched with core bar cylinder (21) is designed with upper end cover boss
Fill blind hole.
4. it is used for the assembling die of hard alloy micropore heterotype tubing production according to claim 3, it is characterised in that described
Upper end cover boss and bottom end cover raised head face edge are set by chamfering.
5. it is used for the assembling die of hard alloy micropore heterotype tubing production according to claim 3, it is characterised in that described
Overcoat (3) is tightly placed on bottom end cover boss and upper end cover plateau sidewall；Inner sleeve (4) both ends anchor ring respectively with bottom end cover boss
It is bonded with upper end cover raised head face.
6. it is used for the assembling die of hard alloy micropore heterotype tubing production according to claim 3, it is characterised in that described
It is provided with least two pieces of arcs positioning support blocks (8) between bottom end cover (1) and upper end cover (6), arc positioning support block (8) is along outer
Set (3) is circumferentially uniformly distributed.
7. it is used for the assembling die of hard alloy micropore heterotype tubing production according to claim 6, it is characterised in that described
Arc positioning support block (8) both ends are designed with the step neck (81) matched with bottom end cover pedestal and upper end cover pedestal.
8. it is used for the assembling die of hard alloy micropore heterotype tubing production according to claim 7, it is characterised in that described
Gap is left between on the inside of arc positioning support block (8) and on the outside of overcoat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720575887.6U CN206811135U (en) | 2017-05-23 | 2017-05-23 | Assembling die for the production of hard alloy micropore heterotype tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720575887.6U CN206811135U (en) | 2017-05-23 | 2017-05-23 | Assembling die for the production of hard alloy micropore heterotype tubing |
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| Publication Number | Publication Date |
|---|---|
| CN206811135U true CN206811135U (en) | 2017-12-29 |
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ID=60757137
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720575887.6U Active CN206811135U (en) | 2017-05-23 | 2017-05-23 | Assembling die for the production of hard alloy micropore heterotype tubing |
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| CN (1) | CN206811135U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487163A (en) * | 2020-04-21 | 2020-08-04 | 重庆大学 | Novel variable-load pressurizing grouting test device for fractured coal and rock mass |
| CN112661514A (en) * | 2021-01-08 | 2021-04-16 | 厦门钨业股份有限公司 | Preparation method and mold of water jet sand pipe for ultrahigh pressure water cutting |
-
2017
- 2017-05-23 CN CN201720575887.6U patent/CN206811135U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487163A (en) * | 2020-04-21 | 2020-08-04 | 重庆大学 | Novel variable-load pressurizing grouting test device for fractured coal and rock mass |
| CN112661514A (en) * | 2021-01-08 | 2021-04-16 | 厦门钨业股份有限公司 | Preparation method and mold of water jet sand pipe for ultrahigh pressure water cutting |
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