CN106825341B - A kind of band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method - Google Patents

A kind of band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method Download PDF

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Publication number
CN106825341B
CN106825341B CN201710247378.5A CN201710247378A CN106825341B CN 106825341 B CN106825341 B CN 106825341B CN 201710247378 A CN201710247378 A CN 201710247378A CN 106825341 B CN106825341 B CN 106825341B
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ring
height
cover die
forging
muscle
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CN106825341A (en
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华林
邓加东
钱东升
兰箭
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00Making articles shaped as bodies of revolution
    • B21H1/06Making articles shaped as bodies of revolution rings of restricted axial length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape

Abstract

The invention discloses a kind of band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method, comprise the following steps:Set to constrain the cover die of ring billet, ring billet is placed in cover die;Machine for rolling ring dynamical system driving under, home roll rotation driving cover die drive ring billet rotate, core roller straight-line feed extrude to ring billet highly increase to it is highly consistent with cover die;Core roller is replaced with extrusion punch-pin;Deputy roller of the adjustment positioned at home roll opposite is close to cover mould surface;Driven by Hydraulic Cylinder punch-pin travels forward the ring that is contacted with its working face of extrusion, local grid ribs structure of extruding out;Then punch-pin backhaul, deputy roller low speed rotation drive cover die to turn clockwise certain angle;Above-mentioned steps are iteratively repeated, until integral grid muscle structure of being extruded out on ring surface.The present invention realizes the band big high footpath thin-walled ring integral seamless near-net-shape of muscle, may replace surface muscle structure welding and shapes and substantially reduce machining, improves manufacture efficiency and product quality, reduces manufacturing cost, expands manufacture scope.

Description

A kind of band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method
Technical field
The invention belongs to Technology of Plastic Processing field, and in particular to a kind of band muscle larger ratio of height to diameter thin-walled ring jam is combined into Shape method.
Background technology
Band muscle larger ratio of height to diameter thin-walled ring (hereinafter referred to as band muscle ring) based on the light materials such as aluminium alloy, wall thickness is small, Ratio of height to diameter is big, surface carries vertical muscle, horizontal bar or crisscross grid ribs, belongs to the difficult deformation of material, structure is difficult shapes special ring, It is high-performance light component indispensable in space flight and defence equipment.Such existing manufacture method with muscle ring is first to adopt With the plastic processing method monolithic molding ring matrix such as ring, spinning is rolled, welding and cutting process are then recycled in ring matrix Surface Machining grid ribs.
Obvious drawback be present in existing ring base plastic manufacturing process and grid ribs structure welding or cutting process.It is right In Plastic Forming ring matrix, because wall thickness is small, ratio of height to diameter is big, it is big (in order to avoid larger ratio of height to diameter upsetting commonly to roll ring base difficulty Slightly, blank needs upsetting pull repeatedly), ring circularity be difficult to ensure (the thin poor rigidity of ring wall, in the operation of rolling easily plastic instability and By draw down), it usually needs increase when increase wall thickness allowance causes skiver with material consumption.Mould pressing is then main at present Suitable for 1 meter or so of middle-size and small-size ring of diameter, the bigger ring mould pressing defect of diameter is difficult to control and existing shaping Equipment is difficult to.For ring surface band muscle structure, not only efficiency is very low for welding and cutting, and a large amount of welded seams Destroyed with streamline caused by cutting, hence it is evident that weaken component structure property.It is although currently reported using the modeling such as spinning, extruding Property processing method profiled surface rib, but these methods are by forming technology and equipment limit, be only applicable to middle-size and small-size ring and Simply vertical muscle or horizontal bar shaping, it is then helpless for major diameter ring and increasingly complex grid ribs, and they are then usual Applied in more advanced large aerospace and weaponry.Therefore, it is highly desirable to grind for the band existing manufacturing issue of muscle ring The more advanced forming technique of hair, improves manufacture efficiency and properties of product, expands shaped object, meets high-end space flight and weapon dress Standby growth requirement.
The content of the invention
Based on above the deficiencies in the prior art, technical problem solved by the invention is to provide a kind of band muscle larger ratio of height to diameter Thin-walled ring jam combined shaping method, using ring method is rolled in mould and continuous and local extrusion method is combined, it can be achieved big high Footpath thin-walled ring matrix and surface muscle slotless design near-net-shape, substitution are welded and substantially reduce machining, be applicable to not With size and structure band muscle ring, so as to improve manufacture production efficiency and properties of product, expand shaped object.
In order to solve the above-mentioned technical problem, the technical solution used in the present invention is:A kind of band muscle larger ratio of height to diameter thin-walled ring Part jam combined shaping method, comprises the following steps:
Step 1: setting to constrain the cover die of ring billet, ring billet is placed in cover die;
Step 2: core roller is penetrated in ring billet endoporus, under the driving of machine for rolling ring dynamical system, home roll rotation driving set modular belt Rotating ring base rotates, the extrusion of core roller straight-line feed;
Step 3: when ring billet highly increases to highly consistent with cover die, stop the feeding of core roller, the operation of rolling terminates, thick Wall ring billet forms thin-walled ring matrix;
Step 4: core roller is replaced with into extrusion punch-pin, the ring matrix of shaping is remained in cover die;
Step 5: deputy roller of the adjustment positioned at home roll opposite is close to cover die outer surface;
The ring that extrusion contacts with its working face Step 6: Driven by Hydraulic Cylinder punch-pin travels forward, Local grid of extruding out Muscle structure;Then punch-pin backhaul, deputy roller low speed rotation drive cover die to turn clockwise certain angle θ, θ=360 °/n, wherein n= Ring indulges muscle number;
Step 7: step 6 is iteratively repeated, until integral grid muscle structure of being extruded out on ring surface, process knot of extruding Beam, extrusion punch-pin is disengaged, and ring is taken out from cover die, obtain band muscle larger ratio of height to diameter thin-walled ring.
As the preferred embodiment of above-mentioned technical proposal, band muscle larger ratio of height to diameter thin-walled ring provided in an embodiment of the present invention Jam combined shaping method further comprises the part or all of of following technical characteristic:
As the improvement of above-mentioned technical proposal, in one embodiment of the invention, in the step 1, ring forging size Determined according to target ring product and allowance, ring forging outer radius R is equal to target ring product outer radius and added plus corresponding Spare time measures Δ R, and ring forging inside radius r subtracts corresponding allowance Δ r equal to target ring product inside radius, and ring forging is axially high Degree B adds corresponding allowance Δ B, grid ribs part design (2~5) ° pattern draft α equal to target ring product axial height With corresponding allowance Δ W.Ring matrix size determines according to ring forging, ring base diameter D1Half outside equal to 2 times ring forgings Footpath R, i.e. D1=2R, ring matrix height B1Equal to ring forging height B, ring matrix internal diameter d1Need to be true according to ring forging volume V It is fixed,Ring billet size is according to the determination of ring matrix, ring billet outer diameter D0With ring base diameter D1Between it is full Sufficient D1=(1~3) D0, ring billet height B0With ring matrix height B1Between meet B1=(1.2~4) B0, ring billet internal diameterCover die working size determines according to ring forging, cover die internal diameter dtIt is 2R equal to ring forging external diameter, Cover die height BtEqual with ring forging height B, cover die external diameter can carry out Intensity Design come really according to cover die material and facility tonnage It is fixed.
As the improvement of above-mentioned technical proposal, as the improvement of above-mentioned technical proposal, in one embodiment of the invention, In the step 1, before placing ring billet, if ring billet wall thickness is small, cold plasticity is good and equipment tonnage is big, can normal temperature roll ring, it is on the contrary then Ring is rolled after initial forging temperature need to be heated to.
As the improvement of above-mentioned technical proposal, in one embodiment of the invention, the step 4 convex mould working face Geomery matches with ring forging surface mesh muscle geomery, and its lateral mid-point is disposed with row shaping ring forging and indulged The longitudinal fluting die cavity of muscle, it is longitudinally arranged to have a plurality of and equal numbers of transverse concave groove die cavity of ring forging horizontal bar, each part The row of extrusion moulding one completely indulge one section of circumferential length of muscle and all horizontal bars.The punch-pin circumferential width LBRing is should be slightly bigger than during design The adjacent vertical muscle spacing L in forging surfaceZ, may be designed as LB=(1.7~1.9) LZ;To avoid producing fold defect, punch-pin work of extruding Make face both sides and be designed as inclined-plane, angle of inclination is controlled at 15 °~30 °;Punch-pin working face axial height BjEqual to ring forging height B, boss radius surface RjInside radius r big equal to ring forging, boss height LjEqual to grid ribs height L, recess width HjEqual to grid Muscle width H, boss gradient αjEqual to grid ribs gradient α;Punch-pin upper and lower side band side wall, sidewall width HBWith rolling ring base wall It is thick equal.
As the improvement of above-mentioned technical proposal, in one embodiment of the invention, in the step 4, if ring needs Mode is squeezed using hot pressing, then then needs to place into after ring taking-up is heated into initial forging temperature when ring temperature is less than final forging temperature In cover die.
Compared with prior art, technical scheme has the advantages that:Jam proposed by the present invention is compound Manufacturing process, it can effectively overcome existing band muscle ring base plastic shaping and surface muscle structure welding Problems in forming:First, Using ring method shaping larger ratio of height to diameter thin-walled ring matrix is rolled in mould, ring axial elongation can be realized by cover die effect of contraction Deformation, increase ring rigidity simultaneously control ring diameter, and tradition can be overcome to roll big ring base difficulty, the easy unstability of poor rigidity, shape The problems such as size is difficult to control;Secondly, using continuous and local extrusion method profiled surface muscle structure, compared to welding forming efficiency Height, structural behaviour are good, and continuous and local deformation force energy is small, set modular constraint promotes surface muscle structure formation and is easily controlled ring Part overall dimensions, so as to overcome the problems such as traditional overall extrusion moulding power energy is big, dimensional accuracy is not easy to ensure.Therefore, it is of the invention With forming accuracy height, efficiency high, the overall merit such as cost is low, quality is good.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can Become apparent, below in conjunction with preferred embodiment, describe in detail as follows.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, the accompanying drawing of embodiment will be simply situated between below Continue.
Fig. 1 is the band muscle larger ratio of height to diameter thin-walled ring product schematic diagram of the present invention;
Fig. 2 is band muscle larger ratio of height to diameter thin-walled ring forging (i.e. ring forging 6c) schematic cross-section of the present invention;
Fig. 3 is rolling mill practice schematic diagram in the larger ratio of height to diameter thin-walled ring mould of the present invention, and wherein Fig. 3 (a) is that rolling starts Stage schematic diagram, Fig. 3 (b) are rolling interstage schematic diagrames, and Fig. 3 (c) is rolling ending phase schematic diagram;
Fig. 4 be the present invention table gluten structure continuous and local extrusion punch structure schematic diagram, wherein Fig. 4 (a) be mould just View, Fig. 4 (b) are mould top views, and Fig. 4 (c) is Fig. 4 (a) A-A views;
Fig. 5 is the table gluten structure continuous and local extrusion process schematic representation of the present invention, and wherein Fig. 5 (a) is to extrude for the first time Incipient stage schematic diagram, Fig. 5 (b) are ending phase schematic diagrames of extruding for the first time, and Fig. 5 (c) is to show second of extrusion incipient stage It is intended to, Fig. 5 (d) is second of extrusion ending phase schematic diagram, and Fig. 5 (e) is last time extrusion incipient stage schematic diagram, Fig. 5 (f) it is last time extrusion ending phase schematic diagram;
Fig. 6 is Fig. 5 (b) of present invention section B-B schematic diagram;
In figure:1- home rolls;2- cover dies;3- core rollers;4- guide rollers;5- ring billets;6- larger ratio of height to diameter thin-walled ring matrixes;6a- Extrusion moulding ring for the first time;6b- extrudes ring for the second time;6c- ring forgings (i.e. last time extrusion moulding ring);7- Extrusion punch-pin;8- deputy rollers.
Embodiment
The following detailed description of the present invention embodiment, its as part of this specification, by embodiment come Illustrate the principle of the present invention, other aspects of the present invention, feature and its advantage will become apparent by the detailed description.
The present invention provides a kind of band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method, comprises the following steps:
Step 1: setting to constrain the cover die of ring billet, ring billet is placed in cover die;This method, which is adopted, is commonly rolling ring group plinth On, increase a cover die 2 and be used to constrain ring billet 5, make the roll forming in cover die 2 of ring billet 5, as shown in Fig. 3 (a).
Ring billet and cover die size design are as follows:First according to target ring product (as shown in figure 1, i.e. band muscle larger ratio of height to diameter Thin-walled ring) size and allowance determines ring forging 6c sizes, wherein ring forging 6c outer radius R is equal to outside target ring product Radius adds corresponding allowance Δ R, and ring forging 6c inside radius r subtracts corresponding allowance equal to target ring product inside radius Δ r, ring forging 6c axial heights B add corresponding allowance Δ B equal to target ring product axial height, and grid ribs part is set (2~5) ° pattern draft α and corresponding allowance Δ W is counted, as shown in Figure 2.Further according to ring forging 6c size design rings matrix 6 With the size of ring billet 5, wherein the diameter D of ring matrix 61Equal to 2 times ring forging 6c outer radius R, i.e. D1=2R, the height B of ring matrix 61 Equal to ring forging 6c height B, the internal diameter d of ring matrix 61It need to be determined according to ring forging 6c volumes V,For 5 radial and axial deflection of ring billet in coordinated allocation ring rolling process, control its deformation uniformity, the outer diameter D of ring billet 50With ring The diameter D of matrix 61Between meet D1=(1~3) D0, the height B of ring billet 50With the height B of ring forging 61Between meet B1=(1.2~4) B0, Ring billet internal diameter
The working size of cover die 2 determines according to ring forging 6c, it is generally the case that the internal diameter d of cover die 2tEqual to ring forging 6c external diameters That is 2R, the height B of cover die 2tEqual with ring forging 6c height B, the external diameter of cover die 2 can carry out strong according to the material and facility tonnage of cover die 2 Degree is designed to determine.
Step 2: core roller is penetrated in ring billet endoporus, under the driving of machine for rolling ring dynamical system, home roll rotation driving set modular belt Rotating ring base rotates, the extrusion of core roller straight-line feed;In mould in ring rolling process, cover die 2 rotates together with ring, and ring is in core Under the continuous feed extrusion effect of roller 3, thinning radial thickness, circumferential enlarged-diameter, axial height elongation are produced in the cover die 2 Plastic deformation, the constraint of cover die 2 can increase ring rigidity and avoid plastic instability, and ring can be made axially elongated from And simplify base, and can accurately control ring size.
The ring billet 5 processed is positioned in cover die 2 (before placing blank, can be according to billet size performance and equipment tonnage To determine the need for heating blank in advance.Blank wall thickness is small, cold plasticity is good and equipment tonnage is big, can normal temperature roll ring, Otherwise roll ring after can heating), then core roller 3 is penetrated in the endoporus of ring billet 5, under the driving of machine for rolling ring dynamical system, the rotation of home roll 1 is driven Dynamic cover die 2 drives ring billet 5 to rotate, the extrusion of the straight-line feed of core roller 3, ring billet 5 is undergone two deformation stages and roll forming:First In the stage, when ring billet does not contact with cover die, the continuous and local deformation that produce radial compression first, circumferentially extends makes wall thickness reduction, straight Footpath expands, as shown in Fig. 3 (b);Second stage, when ring billet enlarged-diameter with cover die to after contact, ring billet is produced in the case where covering modular constraint The continuous and local deformation of raw radial compression, axial elongation increases wall thickness reduction, height, as shown in Fig. 3 (c).
Step 3: when ring billet highly increases to highly consistent with cover die, stop the feeding of core roller, the operation of rolling terminates, thick Wall ring billet 5 forms thin-walled ring matrix 6;
Step 4: core roller 3 is replaced with into extrusion punch-pin 7, the ring matrix 6 of shaping is remained in cover die 2 (according to hot pressing The mode of squeezing, placed into after rolling terminates also to need ring taking out heating when rear ring temperature is less than final forging temperature in cover die 2), As shown in Fig. 5 (a);Male Die Size of extruding designs:According to target ring grid ribs physical dimension, design and its physical dimension phase The extrusion punch-pin 7 matched somebody with somebody, as shown in Figure 4.In view of release problems, extrusion punch-pin 7 width LBRing forging 6c is should be slightly bigger than during design The adjacent vertical muscle spacing in surface, a row of extruding out every time indulge muscle;To avoid producing fold defect, extrusion punch-pin 7 working face both sides are set It is calculated as inclined-plane;Extrude the working face axial height B of punch-pin 7jEqual to ring forging 6c height B, boss radius surface RjIt is big equal to ring forging 6c Inside radius r, boss height LjEqual to grid ribs height L, recess width HjEqual to grid ribs width H, boss gradient αjEqual to grid Muscle gradient α;Punch-pin upper and lower side band side wall, sidewall width HBIt is equal with the rolling wall thickness of ring matrix 6, in extrusion, side wall limitation Metal is flowed vertically, and shape table gluten structure is flowed into extrusion punch-pin die cavity beneficial to metal.
Step 5: deputy roller of the adjustment positioned at home roll opposite is close to cover die outer surface;Deputy roller 8 positioned at the opposite of home roll 1 is close to The outer surface of cover die 2, the rotation of the batch (-type) of cover die 2 is driven at work, wherein deputy roller 8 is a low speed rotation by power source drive Roller, being accurately positioned for the anglec of rotation of cover die 2 can be achieved.
The ring that extrusion contacts with its working face Step 6: Driven by Hydraulic Cylinder extrusion punch-pin travels forward, part of extruding out Grid ribs structure;Then to extrude punch-pin backhaul, deputy roller low speed rotation drives cover die to turn clockwise certain angle θ, θ=360 °/ N, wherein n=rings indulge muscle number;Driven by Hydraulic Cylinder extrusion punch-pin 7 travels forward the ring that is contacted with its working face of extrusion, presses Extrude Local grid muscle structure;Extrude the backhaul of punch-pin 7, the low speed rotation of deputy roller 8 drives cover die 2 to turn clockwise angle, θ.Using even The table gluten structure of continuous local extrusion method shaping ring matrix, on the basis of ring completion is rolled in mould, utilizes the rotation driving of cover die 2 Extruded repeatedly realization with extrusion punch-pin 7.It is anti-with punch-pin 7 by allowing the interrupted rotating band rotating ring part of cover die 2 to rotate in forming process Multiple local extrusion, progressive forming table gluten structure, not only reduces Male Die Size, and reduce plastic force.Wherein, cover die 2 also limits The circumferential elongation of ring has been made, has been flowed and profiled surface muscle structure to the extrusion die cavity of punch-pin 7 beneficial to metal.
Step 7: step 6 is iteratively repeated, until integral grid muscle structure of being extruded out on ring surface, process knot of extruding Beam, extrusion punch-pin 7 is disengaged, and ring forging 6c is taken out from cover die.
Described above is the preferred embodiment of the present invention, can not limit the right model of the present invention with this certainly Enclose, it is noted that for those skilled in the art, under the premise without departing from the principles of the invention, may be used also To make some improvement and variation, these are improved and variation is also considered as protection scope of the present invention.

Claims (5)

1. a kind of band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method, it is characterised in that comprise the following steps:
Step 1: setting to constrain the cover die of ring billet, ring billet is placed in cover die;
Step 2: core roller is penetrated in ring billet endoporus, under the driving of machine for rolling ring dynamical system, home roll rotation driving cover die band rotating ring Base rotates, the extrusion of core roller straight-line feed;
Step 3: when ring billet highly increases to highly consistent with cover die, stop the feeding of core roller, the operation of rolling terminates, heavy wall ring Base forms thin-walled ring matrix;
Step 4: core roller is replaced with into extrusion punch-pin, the ring matrix of shaping is remained in cover die;
Step 5: deputy roller of the adjustment positioned at home roll opposite is close to cover die outer surface;
The ring that extrusion contacts with its working face Step 6: Driven by Hydraulic Cylinder extrusion punch-pin travels forward, Local grid of extruding out Muscle structure;Then to extrude punch-pin backhaul, deputy roller low speed rotation drives cover die to turn clockwise certain angle θ, θ=360 °/n, its Middle n=rings indulge muscle number;
Step 7: being iteratively repeated step 6, until integral grid muscle structure of being extruded out on ring surface, extrusion process terminate, take off Extrusion punch-pin is driven, and ring is taken out from cover die, obtains band muscle larger ratio of height to diameter thin-walled ring.
2. band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method as claimed in claim 1, it is characterised in that:The step In rapid one, ring forging size determines according to target ring product and allowance, and ring forging outer radius R is equal to target ring product Outer radius adds corresponding allowance Δ R, and ring forging inside radius r subtracts corresponding allowance equal to target ring product inside radius Δ r, ring forging axial height B add corresponding allowance Δ B, the design of grid ribs part equal to target ring product axial height (2~5) ° pattern draft α and corresponding allowance Δ W;Ring matrix size determines according to ring forging, ring base diameter D1Deng In 2 times of ring forgings outer radius R, i.e. D1=2R, ring matrix height B1Equal to ring forging height B, ring matrix internal diameter d1Need basis Ring forging volume V determinations,Ring billet size is according to the determination of ring matrix, ring billet outer diameter D0With ring base Body diameter D1Between meet D1=(1~3) D0, ring billet height B0With ring matrix height B1Between meet B1=(1.2~4) B0, ring Base internal diameterCover die working size determines according to ring forging, cover die internal diameter dtEqual to ring forging external diameter That is 2R, cover die height BtEqual with ring forging height B, cover die external diameter can carry out Intensity Design according to cover die material and facility tonnage To determine.
3. band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method as claimed in claim 1, it is characterised in that:The step In rapid one, before placing ring billet, when ring billet wall thickness is small, cold plasticity is good and equipment tonnage is big, progress normal temperature rolls ring, on the contrary then need ring Base rolls ring after being heated to initial forging temperature.
4. band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method as claimed in claim 1, it is characterised in that:Step 4 Convex mould shape of working surface size matches with ring forging surface mesh muscle geomery, and its lateral mid-point is disposed with a row The longitudinal fluting die cavity that ring forging indulges muscle is shaped, it is longitudinally arranged to have a plurality of and equal numbers of transverse concave groove type of ring forging horizontal bar Chamber, every time local extrusion moulding one arrange completely one section of circumferential length of vertical muscle and all horizontal bars;The punch-pin width LBShould during design Vertical muscle spacing adjacent more than ring forging surface, is designed specifically to LB=(1.7~1.9) LZ;Extrusion punch-pin working face both sides are designed as Inclined-plane, angle of inclination are controlled at 15 °~30 °;Punch-pin working face axial height BjEqual to ring forging height B, boss radius surface RjDeng In the big inside radius r of ring forging, boss height LjEqual to grid ribs height L, recess width HjEqual to grid ribs width H, boss gradient αjEqual to grid ribs gradient α;Punch-pin upper and lower side band side wall, sidewall width HBIt is equal with rolling ring matrix wall thickness.
5. band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method as claimed in claim 1, it is characterised in that:The step In rapid four, if ring needs to squeeze mode using hot pressing, then need to take out ring when ring temperature is less than final forging temperature and heat Placed into after to initial forging temperature in cover die.
CN201710247378.5A 2017-04-14 2017-04-14 A kind of band muscle larger ratio of height to diameter thin-walled ring jam combined shaping method Active CN106825341B (en)

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CN107363154A (en) * 2017-07-11 2017-11-21 武汉理工大学 A kind of swollen extrusion forming method of complex mesh muscle ring
CN108580622B (en) * 2018-03-19 2020-01-14 武汉理工大学 Design method of in-mold radial extrusion forming process of I-shaped longitudinal rib ring piece
CN110479840B (en) * 2019-08-02 2020-08-18 武汉理工大学 Enveloping rolling forming method for thin-wall high-rib cylindrical component
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US3626564A (en) * 1970-02-26 1971-12-14 Lear Siegler Inc Manufacture of bearing races
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CN2836954Y (en) * 2005-10-31 2006-11-15 重庆钢铁(集团)有限责任公司 Inner guard ring forming and manufacturing device for steel strap package
DE102009007446B4 (en) * 2009-02-04 2012-03-29 Wieland-Werke Ag Heat exchanger tube and method for its production
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