CN106111992B - A kind of the evenness of wall thickness control tooling and method of hot isostatic pressing powder metallurgy thin wall component - Google Patents
A kind of the evenness of wall thickness control tooling and method of hot isostatic pressing powder metallurgy thin wall component Download PDFInfo
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- CN106111992B CN106111992B CN201610463688.6A CN201610463688A CN106111992B CN 106111992 B CN106111992 B CN 106111992B CN 201610463688 A CN201610463688 A CN 201610463688A CN 106111992 B CN106111992 B CN 106111992B
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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
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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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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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
- B22F2003/153—Hot isostatic pressing apparatus specific to HIP
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- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to a kind of evenness of wall thickness of hot isostatic pressing powder metallurgy thin wall component control tooling and methods, wall thickness control when being prepared especially for near-net-shape, belong to the technology field of the forming of thin-wall member, the thin-walled refers to that wall thickness is 0.3 5mm.Thin-walled workpiece culvert, jet pipe etc. outside the body structure of guided missile, aero-engine are widely used.Hot isostatic pressing powder metallurgical technique can realize the preparation of such component, but there is a problem of that Wall thickness uniformity is relatively low, deviation is larger in practical application, cause product qualification rate relatively low.The present invention devises appropriate evenness of wall thickness control technique, is optimized in terms of the control of the inner cavity of jacket cavity, the control of outer wall shape and assembling procedure, realizes good wall thickness dimension control, has achieved the purpose that prevent deformation of products.
Description
Technical field
The present invention relates to a kind of evenness of wall thickness of hot isostatic pressing powder metallurgy thin wall component control tooling and methods, especially
It is wall thickness control when being prepared for near-net-shape, belongs to the technology field of the forming of thin-wall member, the thin-walled is
Finger wall thickness is 0.3-5mm.
Background technology
Thin-walled workpiece culvert, jet pipe etc. outside the body structure of guided missile, aero-engine are widely used.To meet model
The requirement of lighting and high rigidity, such component are typically designed to thin-walled+bead structures, the most thin reachable 1mm of wall thickness, surface distribution
There is crisscross rib, as shown in Figure 1.Due to These characteristics, traditional machining, welding, casting technique are difficult to realize this
The problems such as forming of class component, there are the period is long, costly and deflection is big.
Hot isostatic pressing powder metallurgical technique can realize the monolithic molding of such component in hot isostatic pressing, have effect
The advantage that rate is high, deformation is small, stock utilization is high, is the common preparation method of such component.Its processing step is：Jacket assembles
After positioning, by powder filling into (structural schematic diagram is as shown in Figure 2) in jacket cavity, then material is realized by heat and other static pressuring processes
The fine and close forming with component of material.Currently, the technology extensive use in model, but practical application also exposes wall thickness control
There is evenness of wall thickness difference in difficulty, be embodied in the partial thickening at the partially thin and axial middle part in circumferential part, such as scheme
Shown in 3a and Fig. 3 b.This problem significantly impacts the forming quality of component, and product rejection is even resulted in when serious.
The root of uniform wall thickness sex chromosome mosaicism is that powder is difficult to be uniformly distributed in jacket cavity, and reason includes two sides
Face：When being the assembling positioning of jacket outer wall first, local size is less than normal in the cavity caused by rigging error, welding deformation；
Secondly because middle part " bulge " phenomenon of jacket outer wall during vibrations caused by rigidity reduction, this phenomenon is non-
In rotary type component clearly.
Invention content
The technology of the present invention solves the problems, such as：It is thin to overcome the deficiencies of the prior art and provide a kind of hot isostatic pressing powder metallurgy
The evenness of wall thickness control tooling and method of wall member, the hot isostatic pressing for thin-wall member shape, and this method can solve this
Wall thickness control is difficult in class elements during formation, and the problem of evenness of wall thickness difference realizes the uniformity controlling of wall thickness.
Technical solution of the invention is：
A kind of evenness of wall thickness control tooling of hot isostatic pressing powder metallurgy thin wall component, which includes in 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, there is upper limit insert and lower limit between jacket inner core and jacket wall
Insert, upper limit insert and lower limit insert are for keeping jacket inner core and jacket wall concentric；Outer support passes through argon arc welding spot welding
Mode is fixedly welded on the outer surface of jacket wall；Upper end cover is located at the top of upper limit insert, and upper end cover is outer with jacket inner core
The inner surface of surface and jacket wall is attached by welding；Bottom end cover is located at the lower section of lower limit insert, bottom end cover and packet
The inner surface of the outer surface and jacket wall that cover inner core is attached by welding；
Gap between the jacket inner core and jacket wall for filling powder to be formed, jacket inner core and jacket wall it
Between distance be not less than thin-wall member to be formed wall thickness；
The distance of top of the top of the upper limit insert apart from jacket inner core is not less than 5mm, lower limit edge
The distance of lowermost end of the lowermost end of block apart from jacket inner core is not less than 5mm；
The upper limit insert is cyclic structure, 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 contacts with the inner surface of jacket wall, coordinates, 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, θ1Angular region is 15 °
~30 °；On the outside of upper limit insert after chamfering part h is matched with jacket wall2Size be not less than 40mm；
Powder filling hole is distributed in upper limit insert, aperture is not less than 3mm；
The lower limit insert is cyclic structure, 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 contacts with the inner surface of jacket wall, coordinates, 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, θ2Angular region is 15 °
~30 °；On the outside of upper limit insert after chamfering part h is matched with jacket wall4Size be not less than 40mm；
The outer support includes longitudinal rib and circumferential muscle, and the quantity of circumferential muscle is no less than two, and the spacing of circumferential muscle is not
More than 200mm, the inner surface of circumferential muscle matches with the outer surface of jacket wall and is fixedly connected by way of spot welding, solder joint it
Between distance be more than 100mm, be 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 fixedly connected by welding with all circumferential muscle, the appearance of longitudinal rib and jacket wall
Face matches and is fixedly connected by way of spot welding, and the distance between solder joint is more than 100mm, is less than 300mm, forbids full weld.
A kind of evenness of wall thickness control method of hot isostatic pressing powder metallurgy thin wall component, step are：
(1) purifying processing is carried out to jacket wall and jacket inner core, then jacket wall is sleeved on outside jacket inner core；
(2) upper limit insert is inlayed and is fixed between jacket inner core and jacket wall, upper end cover is installed, but do not weld；
(3) product that step (2) obtains is subjected to 180 ° of overturning, step (2) is made to obtain the upper end cover of product downward；
(4) lower limit insert is inlayed and is fixed between jacket inner core and jacket wall, install bottom end cover, 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 obtained step (5) overturns 180 °, makes the upper end cover for the product that step (5) obtains upward；
(7) upper end cover is removed, hole is filled by the powder of upper limit insert, fills powder, after being full of by upper end cover with
Jacket inner core and jacket wall are welded to connect；
(8) product obtained to step (7) carries out hip treatment, after hip treatment, outer support and jacket wall
It is detached, waits for subsequently reusing；The 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) mechanical processing and electrochemical treatments are carried out to after step (8) hip treatment and not product of outer support
Jacket inner core and jacket wall are removed, the thin-wall member of uniform wall thickness is obtained.
Advantageous effect
(1) tooling of the invention is by the way that appropriate supporting tool, i.e. upper limit insert and lower limit are arranged in jacket inner core
Insert prevents the decentraction phenomenon of jacket inner core and jacket wall in assembling process and welding process, solves dress powder space not
Wall thickness deviation problem caused by consistent；
(2) tooling of the invention is by jacket wall setting reinforcement netted tooling, i.e. outer support, preventing jacket wall in powder
Part " bulge " phenomenon in end filling, heating process caused by unstability；
(3) the upper limit insert in tooling of the invention and lower limit insert solve and jacket wall by the way that cone angle is arranged
Between assembly orientation problem；By the way that larger thickness is arranged, preferable guiding and assembling positioning have been ensured；
(4) outer support in tooling of the invention realizes being connected and fixed for outer support and jacket wall by the way of spot welding,
It can ensure effective connection at room temperature；When carrying out hip treatment to powder, powder is shunk at high temperature under high pressure
Afterwards, it can also realize the separation of outer support and jacket wall, ensure the progress that powder is shunk；
(5) control method of the invention, by first assembling upper end cover, upper limit insert, 180 ° of overturning assemble again bottom end cover,
Lower limit insert, then the sequence that outer support tooling is assembled after 180 ° is overturn, it not only improves and ensures higher production efficiency, and can
Ensure preferable assembly precision；
(6) control method of the invention is conducive to protect by the operation order first welded bottom end cover, weld upper end cover again
The assembly precision of barrier control product axial direction.
(7) control method of the invention is permitted by outer support tooling and jacket wall spot welding between the rib of outer support tooling
Perhaps the mode of full weld had not only ensured the good support effect of tooling, but also can ensure contraction distortion in hot isostatic pressing
It carries out, has ensured the dimensional accuracy of product.
(8) thin-walled workpiece culvert, jet pipe etc. outside the body structure of guided missile, aero-engine is widely used.Heat etc. is quiet
Pressure powder metallurgical technique can realize the preparation of such component, but that there are Wall thickness uniformities in practical application is relatively low, deviation is larger
Problem causes product qualification rate relatively low.The present invention devises appropriate evenness of wall thickness control technique, from the inner cavity of jacket cavity
It is optimized in terms of control, the control of outer wall shape and assembling procedure, realizes good wall thickness dimension control, having reached prevents
The purpose of deformation of products.
Description of the drawings
Fig. 1 is thin-wall member structural schematic diagram；
Fig. 2 is wrapping structure schematic diagram in the prior art；
Fig. 3 a are the partially thin schematic diagram in part circumferential in thin-wall member wall unevenness phenomenon；
Fig. 3 b are the schematic diagram of the partial thickening at axial middle part in thin-wall member wall unevenness phenomenon；
Fig. 4 is the structural schematic diagram (not including outer support) of the tooling of the present invention；
Fig. 5 is the structural schematic diagram of the outer support of the present invention；
Fig. 6 is the sectional view of upper limit insert；
Fig. 7 is the vertical view of upper limit insert；
Fig. 8 is the sectional view of lower limit insert.
Specific implementation mode
The invention will be further described with reference to the accompanying drawings and examples.
For the problem that such component evenness of wall thickness is poor, controlled inside jacket cavity and outside cavity respectively
Powder filling controls.
1, internal dimension shape limit insert
Inside cavity, the insert on inclined-plane is provided between jacket wall 2 and jacket inner core 1.Insert and outer wall and inner core
To be fitted close, fit clearance is 0~0.05mm, and material used in insert is consistent with jacket inner core 1.
2, external dimension shape supporting tool
Design grid trellis reinforces tooling on the outside of jacket, and tooling inner mold face and the theoretical profile of jacket outer wall fit closely,
Fit clearance is 0~0.05mm.Material used in tooling is consistent with jacket outer wall, by work by way of welding or being mechanically connected
Dress is fixed together with jacket outer wall.
3, the powder filling of such component and jacket packaging process
During process implementing, it then follows " insert in assembly, welds lower end end cap, is equipped with 7 tooling of outer support, fills powder,
The operation order of finally welding upper end end cap ".
Embodiment
A kind of evenness of wall thickness control tooling of hot isostatic pressing powder metallurgy thin wall component, which includes in 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；
The jacket inner core 1 is cylindricality, and cross section is ellipse, and elliptical long axis 800mm, short axle 200mm are high
400mm；
Gap between the jacket inner core 1 and jacket wall 2 is for filling powder to be formed, jacket inner core 1 and jacket
The distance between wall 2 is not less than the wall thickness of thin-wall member to be formed；
The upper limit insert 5 is cyclic structure, and sectional view is as shown in Figure 6.The inner surface and jacket of upper limit insert 5
The outer surface of inner core 1 coordinates, and fit clearance is 0~0.05mm；The outer surface of upper limit insert 5 and the inner surface of jacket wall 2 connect
It touches, cooperation, fit clearance is 0~0.05mm；The thickness h 1 of upper limit insert 5 is not less than 50mm；Under the outside of upper limit insert 5
Edge has chamfer angle θ1, θ1Angular region is 15 °~30 °；5 outside of upper limit insert after chamfering matches the ruler of part h2 with jacket wall 2
Very little is not less than 40mm；
The distance of top of the top of the upper limit insert 5 apart from jacket inner core 1 is 8mm, lower limit insert 6
The distance of lowermost end of the lowermost end apart from jacket inner core 1 be 8mm；The appearance of the inner surface and jacket inner core 1 of upper limit insert 5
Face coordinates, fit clearance 0.03mm；The outer surface of upper limit insert 5 contacts with the inner surface of jacket wall 2, coordinates, between cooperation
Gap is 0.03mm；The thickness h of upper limit insert 51For 60mm；The outer lower edge taper angle theta of upper limit insert 51It is 20 °；After chamfering
5 outside of upper limit insert matches part h with jacket wall 22Size be 50mm；
5 vertical view of upper limit insert is as shown in fig. 7, be distributed with powder filling hole, aperture is not less than in upper limit insert 5
5mm；
The aperture in powder filling hole is 5mm in the upper limit insert 5；
The lower limit insert 6 is cyclic structure, and sectional view is as shown in Figure 8.The inner surface and jacket of lower limit insert 6
The outer surface of inner core 1 coordinates, and fit clearance is 0~0.05mm；The outer surface of lower limit insert 6 and the inner surface of jacket wall 2 connect
It touches, cooperation, fit clearance is 0~0.05mm；The thickness h 3 of lower limit insert 6 is not less than 50mm；On the outside of lower limit insert 6
It is 15 °~30 ° that edge, which has chamfer angle θ 2,2 angular regions of θ,；5 outside of upper limit insert after chamfering matches part h4's with jacket wall 2
Size is not less than 40mm；
The outer surface of 6 inner surface of lower limit insert and jacket inner core 1 coordinates, fit clearance 0.03mm；Lower limit
The outer surface of position insert 6 contacts with the inner surface of jacket wall 2, coordinates, fit clearance 0.03mm；The thickness of lower limit insert 6
h3For 60mm；The outer lower edge taper angle theta of upper limit insert 52It is 20 °；5 outside of upper limit insert after chamfering matches with jacket wall 2
Close part h4Size be 50mm；
The outer support 7 includes longitudinal rib and circumferential muscle, and the quantity of circumferential muscle is no less than two, and the spacing of circumferential muscle is not
More than 200mm, the inner surface of circumferential muscle matches with the outer surface of jacket wall 2 and is fixedly connected by way of spot welding, solder joint
The distance between be more than 100mm, be 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 fixedly connected by welding with all circumferential muscle, longitudinal rib and jacket wall 2
Outer surface matches and is fixedly connected by way of spot welding, and the distance between solder joint is more than 100mm, is less than 300mm, forbids full
Weldering.
The outer support 7 includes longitudinal rib and circumferential muscle, and the quantity of circumferential muscle is two, and the spacing of circumferential muscle is
The inner surface of 150mm, circumferential muscle match with the outer surface of jacket wall 2 and are fixedly connected by way of spot welding, between solder joint
Distance be 100mm, not full weld；Spacing between longitudinal rib is 150mm, and longitudinal rib quantity is 6, every longitudinal rib with it is all
Circumferential muscle be fixedly connected by welding, the side that the outer surface of longitudinal rib and jacket wall 2 matches and passes through spot welding
Formula is fixedly connected, and the distance between solder joint is 150mm, not full weld.
A kind of evenness of wall thickness control method of hot isostatic pressing powder metallurgy thin wall component, step are：
(1) to the 1 purifying processing of jacket wall 2 and jacket inner core, cleansing medium used is degreaser and absolute ethyl alcohol, cleaning
It is dried up after the completion with compressed air, jacket wall 2 is then sleeved on 1 outside of jacket inner core；
(2) upper limit insert 5 is inlayed and is fixed between jacket inner core 1 and jacket wall 2, upper end cover 3 is installed so that upper end
The upper edge of lid 3 is concordant with 2 upper edge of jacket wall, but does not weld；
(3) product that step (2) obtains is subjected to 180 ° of overturning, step (2) is made to obtain the upper end cover 3 of product downward；
(4) lower limit insert 6 is inlayed and 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 points of outer surfaces for being welded in jacket wall 2 of outer support；
(6) product obtained step (5) overturns 180 °, makes the upper end cover 3 for the product that step (5) obtains upward；
(7) upper end cover 3 is removed, hole is filled by the powder of upper limit insert 5, powder is filled, 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 obtained to step (7) carries out hip treatment, after hip treatment, outer support 7 and jacket wall
2 are detached, and wait for subsequently reusing；The hip treatment condition is：Temperature is 850 DEG C, time 5h, and pressure is
130MPa。
(9) to after step (8) hip treatment and the product of no outer support 7 carry out mechanical processing and electrochemical treatments
Jacket inner core 1 and jacket wall 2 are removed, the thin-wall member of uniform wall thickness is obtained.
There is not the case where circumferential direction wall unevenness shown in Fig. 3 a in obtained thin-wall construction, Fig. 3 b does not occur yet
Shown in the partially thick situation in axial direction part, the wall that dimension measurement result shows product is carried out to obtained thin-walled workpiece
Thick deviation decreases below 0.3mm from original more than 1.5mm, be improved significantly.
Unspecified part of the present invention belongs to technology well known to those skilled in the art.
Claims (9)
1. a kind of evenness of wall thickness of thin-wall member controls tooling, it is characterised in that：The control tooling 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) are for keeping jacket inner core (1) and jacket wall (2) same
The heart；Outer support (7) is fixedly welded on the outer surface of jacket wall (2) by way of argon arc welding spot welding；Upper end cover (3) is located at the upper limit
The top of position insert (5), upper end cover (3) pass through welding with the outer surface of jacket inner core (1) and the inner surface of jacket wall (2)
Mode is attached；Bottom end cover (4) is located at the lower section of lower limit insert (6), the outer surface of bottom end cover (4) and jacket inner core (1)
And the inner surface of jacket wall (2) is attached by welding；
The upper limit insert (5) is cyclic structure, the outer surface of the inner surface and jacket inner core (1) of upper limit insert (5)
Cooperation, fit clearance are 0~0.05mm；The outer surface of upper limit insert (5) contacts with the inner surface of jacket wall (2), coordinates, and matches
Conjunction gap 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 down
Angle θ1, θ1Angular region is 15 °~30 °；On the outside of upper limit insert (5) after chamfering part h is matched with jacket wall (2)2Size
Not less than 40mm；Powder filling hole is distributed in upper limit insert (5), aperture is not less than 3mm.
2. a kind of evenness of wall thickness of thin-wall member according to claim 1 controls tooling, it is characterised in that：The packet
Gap between set inner core (1) and jacket wall (2) is 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.
3. a kind of evenness of wall thickness of thin-wall member according to claim 1 controls tooling, it is characterised in that：Described is upper
The distance for limiting top of the top of insert (5) apart from jacket inner core (1) is not less than 5mm, the most bottom of lower limit insert (6)
The distance of the lowermost end apart from jacket inner core (1) is held to be not less than 5mm.
4. a kind of evenness of wall thickness of thin-wall member according to claim 1 controls tooling, it is characterised in that：Under described
It is cyclic structure to limit insert (6), and the inner surface of lower limit insert (6) coordinates with the outer surface of jacket inner core (1), fit clearance
For 0~0.05mm；The outer surface of lower limit insert (6) contacts with the inner surface of jacket wall (2), coordinates, fit clearance be 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 model
Enclose is 15 °~30 °；On the outside of lower limit insert (6) after chamfering part h is matched with jacket wall (2)4Size be not less than
40mm。
5. a kind of evenness of wall thickness of thin-wall member according to claim 1 controls tooling, it is characterised in that：Described is outer
Support (7) includes longitudinal rib and circumferential muscle, and the quantity of circumferential muscle is no less than two, and the spacing of circumferential muscle is not more than 200mm, circumferential
The inner surface of muscle matches with the outer surface of jacket wall (2) and is fixedly connected by way of spot welding, and the distance between solder joint is big
In 100mm, it is 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
It is fixedly connected by welding with all circumferential muscle, the outer surface of longitudinal rib and jacket wall (2) matches and passes through
The mode of spot welding is fixedly connected, and the distance between solder joint is more than 100mm, is less than 300mm.
6. a kind of evenness of wall thickness according to any thin-wall members of claim 1-5 controls the control method of tooling,
It is characterized in that step is：
(1) purifying processing is carried out to jacket wall (2) and jacket inner core (1), jacket wall (2) is then sleeved on jacket inner core
(1) outside；
(2) upper limit insert (5) is inlayed and is fixed between jacket inner core (1) and jacket wall (2), installation upper end cover (3), but not
Welding；
(3) product that step (2) obtains is subjected to 180 ° of overturning, step (2) is made to obtain the upper end cover (3) of product downward；
(4) lower limit insert (6) is inlayed and is fixed between jacket inner core (1) and jacket wall (2), installation bottom end cover (4), 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 obtained step (5) overturns 180 °, makes the upper end cover (3) for the product that step (5) obtains upward；
(7) upper end cover (3) is removed, hole is filled by the powder of upper limit insert (5), powder is filled, 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 obtained to step (7) carries out hip treatment, after hip treatment, outer support (7) and jacket wall
(2) it is detached；
(9) removal jacket inner core (1), jacket wall (2), upper end cover (3), bottom end cover (4), upper limit insert (5) and lower limit edge
Block (6), obtains the thin-wall member of uniform wall thickness.
7. control method according to claim 6, it is characterised in that：In the step (8), hip treatment condition
For：Temperature is 0.7~0.9 times, time 4-6h of material melting point, and pressure is not less than 110MPa.
8. control method according to claim 6, it is characterised in that：In the step (9), removal jacket inner core (1),
Jacket wall (2), upper end cover (3), bottom end cover (4), upper limit insert (5) and lower limit insert (6) mode be：Mechanical processing and
The mode that electrochemical treatments are combined.
9. control method according to claim 6, it is characterised in that：In the step (1), the mode of purifying processing
For：Cleansing medium used is degreaser and absolute ethyl alcohol, is dried up with compressed air after the completion of cleaning.
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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 |
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| CN109079141B (en) * | 2018-08-31 | 2020-11-20 | 航天材料及工艺研究所 | Outer sheath and method for eliminating structural size deviation of rib in powder metallurgy 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 |
| 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 |
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| 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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| CN86106669A (en) * | 1986-10-15 | 1988-04-27 | 沃尔技术有限公司 | The manufacturing of alloy metal powder billets and consolidation |
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| JP2786566B2 (en) * | 1992-07-31 | 1998-08-13 | 株式会社クボタ | Method for producing tubular body for hot-dip galvanizing equipment |
| US20070092394A1 (en) * | 2005-10-26 | 2007-04-26 | General Electric Company | Supersolvus hot isostatic pressing and ring rolling of hollow powder forms |
| CN101579741B (en) * | 2009-06-04 | 2011-03-02 | 航天材料及工艺研究所 | Manufacturing method of large size thin-walled titanium alloy cylindrical part and cylindrical mould |
| CN201455260U (en) * | 2009-06-12 | 2010-05-12 | 河南平高电气股份有限公司 | Cold isostatic mould |
| CN102126022B (en) * | 2011-02-18 | 2013-02-27 | 中南大学 | Constraint sintering die for controlling sintering deformation defect of powder metallurgical green body |
| CN102366836B (en) * | 2011-10-25 | 2013-08-14 | 航天材料及工艺研究所 | Production method of high-performance titanium alloy blind pipe |
| CN104057087B (en) * | 2014-07-02 | 2016-01-20 | 钢铁研究总院 | The control method of powder jacket uniform shrinkage is filled in hot isostatic pressing |
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