CN106111992A - The evenness of wall thickness of a kind of high temperature insostatic pressing (HIP) powder metallurgy thin wall component controls frock and method - Google Patents
The evenness of wall thickness of a kind of high temperature insostatic pressing (HIP) powder metallurgy thin wall component controls frock and method Download PDFInfo
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- CN106111992A CN106111992A CN201610463688.6A CN201610463688A CN106111992A CN 106111992 A CN106111992 A CN 106111992A CN 201610463688 A CN201610463688 A CN 201610463688A CN 106111992 A CN106111992 A CN 106111992A
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- inner core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
- B22F3/15—Hot isostatic pressing
- B22F2003/153—Hot isostatic pressing apparatus specific to HIP
Abstract
The evenness of wall thickness that the present invention relates to a kind of high temperature insostatic pressing (HIP) powder metallurgy thin wall component controls frock and method, wall thickness control when preparing especially for near-net-shape, belonging to the Technology field of the shaping of thin-wall member, described thin-walled refers to that wall thickness is 0.3 5mm.Thin-walled workpiece culvert, jet pipe etc. outside the body structure, aero-engine of guided missile are widely used.High temperature insostatic pressing (HIP) powder metallurgical technique can realize the preparation of this class A of geometric unitA, but there is, in actual application, the problem that Wall thickness uniformity is relatively low, deviation is bigger, causes conforming product rate relatively low.The present invention devises appropriate evenness of wall thickness and controls technique, controls from the inner chamber control of jacket die cavity, outer wall profile and is optimized in terms of assembling procedure, it is achieved that good wall thickness dimension controls, and has reached to prevent the purpose of deformation of products.
Description
Technical field
The evenness of wall thickness that the present invention relates to a kind of high temperature insostatic pressing (HIP) powder metallurgy thin wall component controls frock and method, especially
Wall thickness control when being to prepare for near-net-shape, belongs to the Technology field of the shaping of thin-wall member, and described thin-walled is
Finger wall thickness is 0.3-5mm.
Background technology
Thin-walled workpiece culvert, jet pipe etc. outside the body structure, aero-engine of guided missile are widely used.For meeting model
Lighting and the requirement of high rigidity, this class A of geometric unitA is typically designed to thin-walled+bead structures, and wall thickness is the thinnest up to 1mm, surface distributed
There is crisscross rib, as shown in Figure 1.Due to These characteristics, traditional machining, welding, casting technique are difficult to this
The shaping of class A of geometric unitA, exist cycle length, costly with the problem such as deflection is big.
High temperature insostatic pressing (HIP) powder metallurgical technique can realize the monolithic molding of this class A of geometric unitA in hot isostatic pressing, has effect
Rate is high, deform advantage little, that stock utilization is high, is the conventional preparation method of this class A of geometric unitA.Its processing step is: jacket assembles
Behind location, powder filling is entered (structural representation is as shown in Figure 2) in jacket die cavity, realize material by heat and other static pressuring processes subsequently
The fine and close shaping with component of material.At present, this technology is extensively applied in model, but actual application also exposes wall thickness control
Difficulty, the problem that there is evenness of wall thickness difference, it is embodied in the partial thickening at the thinnest and axial middle part, local of circumference, such as figure
Shown in 3a and Fig. 3 b.This problem significantly impacts the forming quality of component, even results in product rejection time serious.
The root of uniform wall thickness sex chromosome mosaicism is that powder is difficult to be uniformly distributed in jacket die cavity, and its reason includes two sides
Face: when being first jacket outer wall assembling location, owing in the die cavity that rigging error, welding deformation are caused, local size is less than normal；
Secondly because jacket outer wall reduces, due to rigidity, middle part " bulge " phenomenon caused during vibrations, this phenomenon is non-
In rotary type component clearly.
Summary of the invention
The technology of the present invention solves problem: overcome the deficiencies in the prior art, it is provided that a kind of high temperature insostatic pressing (HIP) powder metallurgy is thin
The evenness of wall thickness of wall member controls frock and method, and the high temperature insostatic pressing (HIP) for thin-wall member shapes, and the method can solve the problem that this
Wall thickness control difficulty in class A of geometric unitA forming process, the problem of evenness of wall thickness difference, it is achieved the uniformity controlling of wall thickness.
The technical solution of the present invention is:
The evenness of wall thickness of a kind of high temperature insostatic pressing (HIP) powder metallurgy thin wall component controls frock, in this control frock includes jacket
Core, jacket wall, upper end cover, bottom end cover, upper limit insert, lower limit insert and outer support；
Jacket inner core is assemblied in the center of jacket wall, has upper limit insert and lower limit between jacket inner core and jacket wall
Insert, upper limit insert and lower limit insert are used for making jacket inner core and jacket wall concentric；Outer support is by argon arc welding spot welding
Mode is fixedly welded on the outer surface of jacket wall；Upper end cover is positioned at the top of upper limit insert, outside upper end cover is with jacket inner core
The inner surface of surface and jacket wall is attached by welding；Bottom end cover is positioned at the lower section of lower limit insert, bottom end cover and bag
The outer surface of set inner core and the inner surface of jacket wall are attached by welding；
Space between described jacket inner core and jacket wall is used for filling powder to be formed, jacket inner core and jacket wall it
Between distance not less than the wall thickness of thin-wall member to be formed；
The distance of the top of the top distance jacket inner core of described upper limit insert is inlayed not less than 5mm, lower limit
The distance of the lowermost end of the lowermost end distance jacket inner core of block is not less than 5mm；
Described upper limit insert is circulus, and the inner surface of upper limit insert coordinates with the outer surface of jacket inner core,
Fit clearance is 0～0.05mm；The outer surface of upper limit insert coordinates with the outer surface of jacket wall, fit clearance be 0～
0.05mm；The thickness h of upper limit insert1Not less than 50mm；The outer lower edge of upper limit insert has chamfer angle θ1, θ1Angle range is 15 °
～30 °；Match outside upper limit insert after chamfering part h with jacket wall2Size not less than 40mm；
Powder being distributed in upper limit insert and fills hole, aperture is not less than 3mm；
Described lower limit insert is circulus, and the inner surface of lower limit insert coordinates with the outer surface of jacket inner core,
Fit clearance is 0～0.05mm；The outer surface of lower limit insert coordinates with the outer surface of jacket wall, fit clearance be 0～
0.05mm；The thickness h of lower limit insert3Not less than 50mm；The outside upper limb of lower limit insert has taper angle theta2, θ2Angle range is 15 °
～30 °；Match outside upper limit insert after chamfering part h with jacket wall4Size be not less than 40mm；
Described outer support includes longitudinal rib and hoop muscle, and the quantity of hoop muscle is no less than two, and the spacing of hoop muscle is not
More than 200mm, the inner surface of hoop muscle matches with the outer surface of jacket wall and fixing by the way of spot welding is connected, solder joint it
Between distance more than 100mm, less than 300mm, forbid full weld；Spacing between longitudinal rib is not more than 200mm, and longitudinal rib quantity is not
Less than 3, every longitudinal rib is all fixed by the way of welding with all of hoop muscle and is connected, longitudinal rib and the appearance of jacket wall
Face matches and fixing by the way of spot welding connects, and the distance between solder joint is more than 100mm, less than 300mm, forbids full weld.
A kind of evenness of wall thickness control method of high temperature insostatic pressing (HIP) powder metallurgy thin wall component, step is:
(1) jacket wall and jacket inner core are carried out purifying process, then jacket wall is sleeved on outside jacket inner core；
(2) upper limit insert is inlayed it is fixed between jacket inner core and jacket wall, install end cap, but do not weld；
(3) carry out overturning 180 ° by the product that step (2) obtains, make step (2) obtain the upper end cover of product down；
(4) lower limit insert inlayed be fixed between jacket inner core and jacket wall, bottom end cover is installed, and by bottom end cover with
Jacket inner core and jacket wall weld together；
(5) outer support point is welded in the outer surface of jacket wall；
(6) product that step (5) obtained overturns 180 °, makes the upper end cover of the product that step (5) obtains upward；
(7) upper end cover is taken off, fills hole by the powder of upper limit insert, filling powder, after being full of by upper end cover with
Jacket inner core and jacket wall are welded to connect；
(8) product obtaining step (7) carries out hip treatment, after hip treatment, and outer support and jacket wall
Separate, treat follow-up recycling；Described hip treatment condition is: temperature is 0.7～0.9 times of material melting point,
Time is 4-6h, and pressure is not less than 110MPa；
(9) to after step (8) hip treatment and do not have the product of outer support to carry out machining and electrochemical treatments
Remove jacket inner core and jacket wall, obtain the thin-wall member of uniform wall thickness.
Beneficial effect
(1) frock of the present invention is by arranging appropriate supporting tool, i.e. upper limit insert and lower limit at jacket inner core
Insert, prevents jacket inner core and the jacket wall not concentric phenomenon in assembling process and welding process, solves dress powder space not
The wall thickness deviation problem unanimously brought；
(2) frock of the present invention uses netted frock, i.e. outer support by arranging reinforcement at jacket wall, prevents jacket wall at powder
Local " bulge " phenomenon that in end filling, heating process, unstability is caused；
(3) the upper limit insert in the frock of the present invention and lower limit insert, by arranging cone angle, solves and jacket wall
Between assembling orientation problem；By arranging bigger thickness, ensure preferable guiding and assembled location；
(4) outer support in the frock of the present invention, the connection using the mode of spot welding to realize outer support and jacket wall fixes,
Ensure that the effective connection under room temperature；When powder is carried out hip treatment, powder shrinks at high temperature under high pressure
After, it is also possible to realize outer support and the separation of jacket wall, ensure the carrying out that powder shrinks；
(5) control method of the present invention, by first assembling upper end cover, upper limit insert, overturn 180 ° assemble again bottom end cover,
Lower limit insert, then overturn the order assembling outer support frock after 180 °, not only improve and ensure higher production efficiency, again can
Ensure preferable assembly precision；
(6) control method of the present invention, by first welding bottom end cover, welding the operation of upper end cover more sequentially, is conducive to protecting
Barrier controls the assembly precision of product axial direction.
(7) control method of the present invention, by outer support frock and jacket wall spot welding, permits between the rib of outer support frock
Permitted the mode of full weld, both ensured the support effect that frock is good, contraction distortion can be ensured again in hot isostatic pressing
Carry out, ensured the dimensional accuracy of product.
(8) thin-walled workpiece culvert, jet pipe etc. outside the body structure, aero-engine of guided missile are widely used.Heat etc. are quiet
Pressure powder metallurgical technique can realize the preparation of this class A of geometric unitA, but reality exists in applying, and Wall thickness uniformity is relatively low, deviation is bigger
Problem, causes conforming product rate relatively low.The present invention devises appropriate evenness of wall thickness and controls technique, from the inner chamber of jacket die cavity
Control, outer wall profile controls and assembling procedure aspect is optimized, it is achieved that good wall thickness dimension controls, and has reached to prevent
The purpose of deformation of products.
Accompanying drawing explanation
Fig. 1 is thin-wall member structural representation；
Fig. 2 is wrapping structure schematic diagram of the prior art；
Fig. 3 a is the schematic diagram that in thin-wall member wall unevenness phenomenon, the local of circumference is the thinnest；
Fig. 3 b is the schematic diagram of the axially partial thickening at middle part in thin-wall member wall unevenness phenomenon；
Fig. 4 is the structural representation (not including outer support) of the frock of the present invention；
Fig. 5 is the structural representation of the outer support of the present invention；
Fig. 6 is the sectional view of upper limit insert；
Fig. 7 is the top view of upper limit insert；
Fig. 8 is the sectional view of lower limit insert.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
For the problem that such component evenness of wall thickness is poor, it is controlled outside jacket die cavity inside and die cavity respectively
Powder filling controls.
1, the internal dimension spacing insert of shape
Inside die cavity, between jacket wall 2 and jacket inner core 1, it is provided with the insert on inclined-plane.Insert and outer wall and inner core
For closely cooperating, fit clearance is 0～0.05mm, and material used by insert is consistent with jacket inner core 1.
2, outside dimension shape supporting tool
Outside jacket, design grid trellis strengthens frock, and in frock, profile fits tightly with the theoretical profile of jacket outer wall,
Fit clearance is 0～0.05mm.Material used by frock is consistent with jacket outer wall, by work by the way of welding or mechanical connection
Dress is fixed together with jacket outer wall.
3, the powder filling of this class A of geometric unitA and jacket packaging process
During process implementing, it then follows " insert in assembling, welding lower end end cap, equipped outer support 7 frock, filling powder,
Finally welding upper end end cap " operation order.
Embodiment
The evenness of wall thickness of a kind of high temperature insostatic pressing (HIP) powder metallurgy thin wall component controls frock, in this control frock includes jacket
Core 1, jacket wall 2, upper end cover 3, bottom end cover 4, upper limit insert 5, lower limit insert 6 and outer support 7, as shown in Figure 4 and Figure 5；
Described jacket inner core 1 is cylindricality, and its cross section is oval, oval major axis 800mm, short axle 200mm, high
400mm；
Space between described jacket inner core 1 and jacket wall 2 is used for filling powder to be formed, jacket inner core 1 and jacket
Distance between wall 2 is not less than the wall thickness of thin-wall member to be formed；
Described upper limit insert 5 is circulus, and sectional view is as shown in Figure 6.The inner surface of upper limit insert 5 and jacket
The outer surface of inner core 1 coordinates, and fit clearance is 0～0.05mm；The outer surface of the outer surface of upper limit insert 5 and jacket wall 2 is joined
Closing, fit clearance is 0～0.05mm；The thickness h 1 of upper limit insert 5 is not less than 50mm；The outer lower edge of upper limit insert 5 has
Chamfer angle θ1, θ1Angle range is 15 °～30 °；The size of part h2 that matches with jacket wall 2 outside the upper limit insert 5 after chamfering is
Not less than 40mm；
The distance of the top of the top distance jacket inner core 1 of described upper limit insert 5 is 8mm, lower limit insert 6
The distance of lowermost end of lowermost end distance jacket inner core 1 be 8mm；The inner surface of upper limit insert 5 and the appearance of jacket inner core 1
Face coordinates, and fit clearance is 0.03mm；The outer surface of upper limit insert 5 coordinates with the outer surface of jacket wall 2, and fit clearance is
0.03mm；The thickness h of upper limit insert 51For 60mm；The outer lower edge taper angle theta of upper limit insert 51It it is 20 °；The upper limit after chamfering
Match outside the insert 5 of position part h with jacket wall 22Size be 50mm；
Upper limit insert 5 top view fills hole as it is shown in fig. 7, powder is distributed in upper limit insert 5, and aperture is not less than
5mm；
In described upper limit insert 5, powder fills the aperture in hole is 5mm；
Described lower limit insert 6 is circulus, and sectional view is as shown in Figure 8.The inner surface of lower limit insert 6 and jacket
The outer surface of inner core 1 coordinates, and fit clearance is 0～0.05mm；The outer surface of the outer surface of lower limit insert 6 and jacket wall 2 is joined
Closing, fit clearance is 0～0.05mm；The thickness h 3 of lower limit insert 6 is not less than 50mm；The outside upper limb of lower limit insert 6 has
Chamfer angle θ 2, θ 2 angle range is 15 °～30 °；The size of part h4 that matches with jacket wall 2 outside the upper limit insert 5 after chamfering
For not less than 40mm；
Described lower limit insert 6 inner surface coordinates with the outer surface of jacket inner core 1, and fit clearance is 0.03mm；Lower limit
The position outer surface of insert 6 coordinates with the outer surface of jacket wall 2, and fit clearance is 0.03mm；The thickness h of lower limit insert 63For
60mm；The outer lower edge taper angle theta of upper limit insert 52It it is 20 °；Match with jacket wall 2 outside upper limit insert 5 after chamfering
Part h4Size be 50mm；
Described outer support 7 includes longitudinal rib and hoop muscle, and the quantity of hoop muscle is no less than two, and the spacing of hoop muscle is not
More than 200mm, the inner surface of hoop muscle matches with the outer surface of jacket wall 2 and fixes by the way of spot welding and is connected, solder joint
Between distance more than 100mm, less than 300mm, forbid full weld；Spacing between longitudinal rib is not more than 200mm, longitudinal rib quantity
Not less than 3, every longitudinal rib is all fixed by the way of welding with all of hoop muscle and is connected, longitudinal rib and jacket wall 2
Outer surface matches and fixing connection by the way of spot welding, and the distance between solder joint is more than 100mm, less than 300mm, forbids full
Weldering.
Described outer support 7 includes longitudinal rib and hoop muscle, and the quantity of hoop muscle is two, and the spacing of hoop muscle is
150mm, the inner surface of hoop muscle matches with the outer surface of jacket wall 2 and fixes by the way of spot welding and is connected, between solder joint
Distance be 100mm, not full weld；Spacing between longitudinal rib is 150mm, and longitudinal rib quantity is 6, and every longitudinal rib is with all
Hoop muscle all fixing by the way of welding connect, longitudinal rib matches and by the side of spot welding with the outer surface of jacket wall 2
Formula is fixing to be connected, and the distance between solder joint is 150mm, not full weld.
A kind of evenness of wall thickness control method of high temperature insostatic pressing (HIP) powder metallurgy thin wall component, step is:
(1) to jacket wall 2 and the purifying process of jacket inner core 1, cleansing medium used is degreaser and dehydrated alcohol, cleans
Dry up by compressed air after completing, then jacket wall 2 is sleeved on outside jacket inner core 1；
(2) upper limit insert 5 is inlayed it is fixed between jacket inner core 1 and jacket wall 2, install end cap 3 so that upper end
The upper edge of lid 3 with on jacket wall 2 along concordant, but do not weld；
(3) carry out overturning 180 ° by the product that step (2) obtains, make step (2) obtain the upper end cover 3 of product down；
(4) lower limit insert 6 is inlayed it is fixed between jacket inner core 1 and jacket wall 2, bottom end cover 4 is installed, and by lower end
Lid 4 welds together with jacket inner core 1 and jacket wall 2；
(5) by 7 outer surfaces being welded in jacket wall 2 of outer support；
(6) product that step (5) obtained overturns 180 °, makes the upper end cover 3 of the product that step (5) obtains upward；
(7) being taken off by upper end cover 3, fill hole by the powder of upper limit insert 5, filling powder, by upper end cover 3 after being full of
It is welded to connect with jacket inner core 1 and jacket wall 2；
(8) product obtaining step (7) carries out hip treatment, after hip treatment, and outer support 7 and jacket wall
2 separate, and treat follow-up recycling；Described hip treatment condition is: temperature is 850 DEG C, and the time is 5h, and pressure is
130MPa。
(9) to after step (8) hip treatment and do not have the product of outer support 7 to carry out machining and electrochemical treatments
Remove jacket inner core 1 and jacket wall 2, obtain the thin-wall member of uniform wall thickness.
There is not the situation of the circumferential direction wall unevenness shown in Fig. 3 a in the thin-wall construction obtained, Fig. 3 b does not the most occur
The situation that shown axial direction local is partially thick, carries out dimension measurement result to the thin-walled workpiece obtained and shows, the wall of product
Thick deviation decreases below 0.3mm from original more than 1.5mm, be improved significantly.
The present invention is unspecified partly belongs to technology as well known to those skilled in the art.
Claims (10)
1. a thin-wall member evenness of wall thickness control frock, it is characterised in that: this control frock include jacket inner core (1),
Jacket wall (2), upper end cover (3), bottom end cover (4), upper limit insert (5), lower limit insert (6) and outer support (7)；
Jacket inner core (1) is assemblied in the center of jacket wall (2), has upper limit insert between jacket inner core (1) and jacket wall (2)
(5) and lower limit insert (6), upper limit insert (5) and lower limit insert (6) be used for making jacket inner core (1) and jacket wall (2) with
The heart；Outer support (7) is fixedly welded on the outer surface of jacket wall (2) by the way of argon arc welding spot welding；Upper end cover (3) is positioned at the upper limit
The top of position insert (5), the outer surface of upper end cover (3) and jacket inner core (1) and the inner surface of jacket wall (2) pass through to weld
Mode is attached；Bottom end cover (4) is positioned at the outer surface of the lower section of lower limit insert (6), bottom end cover (4) and jacket inner core (1)
And the inner surface of jacket wall (2) is attached by the way of welding.
The evenness of wall thickness of a kind of thin-wall member the most according to claim 1 controls frock, it is characterised in that: described bag
Space between set inner core (1) and jacket wall (2) is used for filling powder to be formed, between jacket inner core (1) and jacket wall (2)
Distance is not less than the wall thickness of thin-wall member to be formed.
The evenness of wall thickness of a kind of thin-wall member the most according to claim 1 controls frock, it is characterised in that: described is upper
The distance of the top of top distance jacket inner core (1) of spacing insert (5) is not less than 5mm, the end of lower limit insert (6)
The distance of the lowermost end of end distance jacket inner core (1) is not less than 5mm.
The evenness of wall thickness of a kind of thin-wall member the most according to claim 1 controls frock, it is characterised in that: described is upper
Spacing insert (5) is circulus, and the inner surface of upper limit insert (5) coordinates with the outer surface of jacket inner core (1), fit clearance
It is 0～0.05mm；The outer surface of upper limit insert (5) coordinates with the outer surface of jacket wall (2), and fit clearance is 0～0.05mm；
The thickness h of upper limit insert (5)1Not less than 50mm；The outer lower edge of upper limit insert (5) has chamfer angle θ1, θ1Angle range is 15 °
～30 °；Match part h with jacket wall (2) in upper limit insert (5) outside after chamfering2Size not less than 40mm；Upper limit
Powder being distributed in insert (5) and fills hole, aperture is not less than 3mm.
The evenness of wall thickness of a kind of thin-wall member the most according to claim 1 controls frock, it is characterised in that: under described
Spacing insert (6) is circulus, and the inner surface of lower limit insert (6) coordinates with the outer surface of jacket inner core (1), fit clearance
It is 0～0.05mm；The outer surface of lower limit insert (6) coordinates with the outer surface of jacket wall (2), and fit clearance is 0～0.05mm；
The thickness h of lower limit insert (6)3Not less than 50mm；The outside upper limb of lower limit insert (6) has taper angle theta2, θ2Angle range is 15 °
～30 °；Match part h with jacket wall (2) in upper limit insert (5) outside after chamfering4Size be not less than 40mm.
The evenness of wall thickness of a kind of thin-wall member the most according to claim 1 controls frock, it is characterised in that: outside described
Supporting (7) and include longitudinal rib and hoop muscle, the quantity of hoop muscle is no less than two, and the spacing of hoop muscle is not more than 200mm, hoop
The inner surface of muscle matches with the outer surface of jacket wall (2) and fixes by the way of spot welding and is connected, and the distance between solder joint is big
In 100mm, less than 300mm, the spacing between longitudinal rib is not more than 200mm, and longitudinal rib quantity is not less than 3, every longitudinal rib
All fixing by the way of welding with all of hoop muscle and be connected, longitudinal rib matches with the outer surface of jacket wall (2) and passes through
The mode of spot welding is fixing to be connected, and the distance between solder joint is more than 100mm, less than 300mm.
7. the evenness of wall thickness control method of a thin-wall member, it is characterised in that step is:
(1) jacket wall (2) and jacket inner core (1) are carried out purifying process, then jacket wall (2) is sleeved on jacket inner core
(1) outside；
(2) upper limit insert (5) is inlayed it is fixed between jacket inner core (1) and jacket wall (2), install end cap (3), but not
Welding；
(3) carry out overturning 180 ° by the product that step (2) obtains, make step (2) obtain the upper end cover (3) of product down；
(4) lower limit insert (6) is inlayed it is fixed between jacket inner core (1) and jacket wall (2), bottom end cover (4) is installed, and will
Bottom end cover (4) welds together with jacket inner core (1) and jacket wall (2)；
(5) outer support (7) point is welded in the outer surface of jacket wall (2)；
(6) product that step (5) obtained overturns 180 °, makes the upper end cover (3) of the product that step (5) obtains upward；
(7) being taken off by upper end cover (3), fill hole by the powder of upper limit insert (5), filling powder, by upper end cover after being full of
(3) it is welded to connect with jacket inner core (1) and jacket wall (2)；
(8) product obtaining step (7) carries out hip treatment, after hip treatment, and outer support (7) and jacket wall
(2) separate；
(9) jacket inner core (1), jacket wall (2), upper end cover (3), bottom end cover (4), upper limit insert (5) and lower limit edge are removed
Block (6), obtains the thin-wall member of uniform wall thickness.
The evenness of wall thickness control method of a kind of thin-wall member the most according to claim 7, it is characterised in that: described step
Suddenly in (8), hip treatment condition is: temperature is 0.7～0.9 times of material melting point, and the time is 4-6h, and pressure is for being not less than
110MPa。
The evenness of wall thickness control method of a kind of thin-wall member the most according to claim 7, it is characterised in that: described step
Suddenly, in (9), jacket inner core (1), jacket wall (2), upper end cover (3), bottom end cover (4), upper limit insert (5) and lower limit edge are removed
The mode of block (6) is: the mode that machining and electrochemical treatments combine.
The evenness of wall thickness control method of a kind of thin-wall member the most according to claim 7, it is characterised in that: described
In step (1), the mode of purifying process is: cleansing medium used is degreaser and dehydrated alcohol, with compression after having cleaned
Air blow drying.
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| CN201610463688.6A CN106111992B (en) | 2016-06-23 | 2016-06-23 | A kind of the evenness of wall thickness control tooling and method of hot isostatic pressing powder metallurgy thin wall component |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109079141A (en) * | 2018-08-31 | 2018-12-25 | 航天材料及工艺研究所 | A kind of outer jacket and method for eliminating bead structures dimensional discrepancy in powder metallurgy component |
| CN109158605A (en) * | 2018-08-24 | 2019-01-08 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of undercarriage outer cylinder and hound integral structure preparation method |
| CN109249025A (en) * | 2017-07-14 | 2019-01-22 | 北京航空航天大学 | A kind of aluminum alloy thin wall pieces hot isostatic pressing manufacturing process |
| CN110756808A (en) * | 2019-12-13 | 2020-02-07 | 哈尔滨工业大学 | Powder increment sintering forming method for complex closed hollow thin-wall part |
| CN110947970A (en) * | 2019-12-05 | 2020-04-03 | 中国航发北京航空材料研究院 | Near-net forming method for thin-wall complex component |
| CN112893849A (en) * | 2021-01-18 | 2021-06-04 | 北京航空航天大学 | Powder-solid coupling forming device and method for multiple layers of ribs in thin-wall part |
| CN113005318A (en) * | 2021-02-25 | 2021-06-22 | 航天材料及工艺研究所 | Powder titanium-aluminum alloy step-by-step hot isostatic pressing preparation method |
| CN114273658A (en) * | 2021-12-29 | 2022-04-05 | 北京钢研高纳科技股份有限公司 | Method for hot isostatic pressing treatment of sheath and alloy powder |
| CN116329556A (en) * | 2023-03-31 | 2023-06-27 | 中机新材料研究院(郑州)有限公司 | Powder metallurgy preparation method of column product |
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| CN109249025A (en) * | 2017-07-14 | 2019-01-22 | 北京航空航天大学 | A kind of aluminum alloy thin wall pieces hot isostatic pressing manufacturing process |
| CN109158605A (en) * | 2018-08-24 | 2019-01-08 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of undercarriage outer cylinder and hound integral structure preparation method |
| CN109079141A (en) * | 2018-08-31 | 2018-12-25 | 航天材料及工艺研究所 | A kind of outer jacket and method for eliminating bead structures dimensional discrepancy in powder metallurgy component |
| CN110947970A (en) * | 2019-12-05 | 2020-04-03 | 中国航发北京航空材料研究院 | Near-net forming method for thin-wall complex component |
| CN110947970B (en) * | 2019-12-05 | 2022-03-15 | 中国航发北京航空材料研究院 | Near-net forming method for thin-wall complex component |
| CN110756808A (en) * | 2019-12-13 | 2020-02-07 | 哈尔滨工业大学 | Powder increment sintering forming method for complex closed hollow thin-wall part |
| CN110756808B (en) * | 2019-12-13 | 2021-09-28 | 哈尔滨工业大学 | Powder increment sintering forming method for complex closed hollow thin-wall part |
| CN112893849B (en) * | 2021-01-18 | 2022-05-31 | 北京航空航天大学 | Powder-solid coupling forming device and method for multiple layers of ribs in thin-wall part |
| CN112893849A (en) * | 2021-01-18 | 2021-06-04 | 北京航空航天大学 | Powder-solid coupling forming device and method for multiple layers of ribs in thin-wall part |
| CN113005318A (en) * | 2021-02-25 | 2021-06-22 | 航天材料及工艺研究所 | Powder titanium-aluminum alloy step-by-step hot isostatic pressing preparation method |
| CN113005318B (en) * | 2021-02-25 | 2022-05-24 | 航天材料及工艺研究所 | Powder titanium-aluminum alloy step-by-step hot isostatic pressing preparation method |
| CN114273658A (en) * | 2021-12-29 | 2022-04-05 | 北京钢研高纳科技股份有限公司 | Method for hot isostatic pressing treatment of sheath and alloy powder |
| CN114273658B (en) * | 2021-12-29 | 2023-09-15 | 北京钢研高纳科技股份有限公司 | Method for hot isostatic pressing treatment of sheath and alloy powder |
| CN116329556A (en) * | 2023-03-31 | 2023-06-27 | 中机新材料研究院(郑州)有限公司 | Powder metallurgy preparation method of column product |
| CN116329556B (en) * | 2023-03-31 | 2024-04-05 | 中机新材料研究院(郑州)有限公司 | Processing equipment and preparation method of column product |
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