CN106734340A - A kind of preparation method of bend pipe three-way pipe - Google Patents
A kind of preparation method of bend pipe three-way pipe Download PDFInfo
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- CN106734340A CN106734340A CN201510814564.3A CN201510814564A CN106734340A CN 106734340 A CN106734340 A CN 106734340A CN 201510814564 A CN201510814564 A CN 201510814564A CN 106734340 A CN106734340 A CN 106734340A
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- Prior art keywords
- inlet amount
- tee
- side inlet
- pipe
- fluid pressure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
- B21C37/29—Making branched pieces, e.g. T-pieces
- B21C37/294—Forming collars by compressing a fluid or a yieldable or resilient mass in the tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/037—Forming branched tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/041—Means for controlling fluid parameters, e.g. pressure or temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
- B21D26/047—Mould construction
Abstract
A kind of preparation method of bend pipe three-way pipe, first by circular pipe, the length according to required for forming part is cut；Then circular pipe is directly made by T-shaped straight tee (ST.TEE) using inner high voltage forming technique；T-shaped straight tee (ST.TEE) is bent, i.e., the straight tee (ST.TEE) part being molded is put into mold cavity, Guan Bi mould is shaped to required preformed part；Preformed part is made annealing treatment, machining stress is eliminated；The sweep tee after annealing, inner high voltage mould is put into, carries out inner high voltage shaping so that part outer surface laminating mold cavity obtains final products.There is the thinning low degree of knee thickness, use requirement can be met.
Description
Technical field
The present invention relates to bending pipe fitting Bulging Technology field, and in particular to a kind of preparation method of bend pipe three-way pipe.
Background technology
It is in the past to use butt welding process and casting technique because of complex structure in the enmgine exhaust of automobile more.With liquid
The rise of molded technology, the three-way pipe of straight forming largely puts into application.By special inner high voltage equipment, pipe can be used
Material straight forming three-way pipe.In actual fabrication, in addition to straight tee (ST.TEE), also bend pipe three-way pipe, straight tee (ST.TEE) can be axially same
When feed supplement, shaping gets up process stabilizing, and the threeway thickness for molding is also thicker.And bend pipe threeway, concrete technology flow process is：
--- --- --- shaping --- annealing --- for the first time is molded for second bend pipe for annealing for blanking；Therefore, the technique needs elder generation
Bending pipes are carried out, when bend pipe, the wall thickness of crooked position is left because deformation (stretching) has first been thinned 20%
The right side, the first time shaping of threeway is now carried out again, and then thinning position is just easy to by two ends effect length, curved when shaping
Interior angle at song creases easily, and the three-way pipe wall thickness of shaping is often very thin, causes that the thickness in final knee is thinning to be reached
40%~50%, therefore use requirement is not reached, cause great potential safety hazard.
The content of the invention
The present invention for prior art above-mentioned deficiency, there is provided a kind of thinning low degree of knee thickness, can meet use want
The preparation method of the bend pipe three-way pipe asked.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：A kind of preparation method of bend pipe three-way pipe,
Step includes：
(1) blanking：Circular pipe, the length according to required for forming part are cut；
(2) it is molded straight tee (ST.TEE)：Using inner high voltage forming technique (fluid power shaping) directly by the circular pipe of step (1)
T-shaped straight tee (ST.TEE) is made, i.e., circular pipe is placed on T-shaped mould tool using hydraulic molding technique, be provided with T-shaped mould tool
Die cavity, die cavity includes the cross through hole and longitudinal hole that are mutually orthogonal to one another, and described circular pipe is placed in horizontal stroke
T-shaped straight tee (ST.TEE) pipe is obtained to shaped by fluid pressure in through hole, is then carried out；
(3) bend pipe：The one end for the T-shaped straight tee (ST.TEE) pipe that step (2) is obtained keeps straight tube, the other end to use bending machine
Bent, the bending radius (i.e. the radius of the bending circular arc of bend pipe central axis) of bending section and the caliber of bend pipe
The ratio between (radius) is 1.3-1.6；Then pipe after bending is placed in shaping mould and is extruded, it is pre- required for obtaining
(that is the planform according to final part carries out pre- press-bending to forming part to the pipe that one end bends, it is to avoid follow-up curved
During pipe three-way forming, the defects such as overlap are produced)；
(4) anneal：Step (3) acquisition preformed part is made annealing treatment, machining stress is eliminated；
(5) it is molded bend pipe threeway：The sweep tee after annealing, inner high voltage mould is put into, carries out inner high voltage hydraulic pressure
Shaping so that part outer surface laminating mold cavity.
The shaped by fluid pressure of step (2) of the present invention is divided into six sections of operations, and first paragraph left side inlet amount 0.4-0.6mm/s is (on the left of i.e.
Process from pipeline to middle extruding), right side inlet amount be 1.2-1.6mm/s (i.e. process from right side pipeline to middle extruding), it is left
Right both sides enter hydraulic jack oily pressure for 20-30MPa (herein for hydraulic jack oil promote piston pressure,
Promote piston to promote liquid to enter three-way pipe inside and realize supercharging), the fluid pressure inside pipeline is 15-25MPa, is held
Continuous 1-3s；Second segment left side inlet amount 3.0-3.6mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are
0.3-0.6mm/s, the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is
25-35MPa, continues 1-3s；3rd section of left side inlet amount 3.0-3.5mm/s (i.e. process from left side pipeline to middle extruding),
Right side inlet amount is 0.3-0.6mm/s, and the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, inside pipeline
Fluid pressure is 35-45MPa, continues 1-3s；(i.e. left side pipeline is squeezed inlet amount 2.5-3.5mm/s to centre on the left of in the of 4th section
The process of pressure), right side inlet amount be 0.3-0.6mm/s, the left and right sides enter hydraulic jack oily pressure be 20-30MPa,
Fluid pressure inside pipeline is 45-55MPa, continues 1-3s；5th section of left side inlet amount 2.2-3.0mm/s (is managed on the left of i.e.
Process from road to middle extruding), right side inlet amount be 0.2-0.5mm/s, the oily pressure that the left and right sides enters hydraulic jack is
20-30MPa, the fluid pressure inside pipeline is 55-65MPa, continues 1-3s；6th section of left side inlet amount
2.2-3.0mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.05-0.3mm/s, and the left and right sides enters
The oily pressure of hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is 65-75MPa, continues 1-3s.
Step (5) inner high voltage shaped by fluid pressure of the present invention is divided into five sections of operations, and first paragraph left side inlet amount 0.5-1.5mm/s is (i.e.
Process from left side pipeline to middle extruding), right side inlet amount be 0.5-1.5mm/s, the left and right sides enters the oily of hydraulic jack
Pressure is 20-30MPa, and the fluid pressure inside pipeline is 15-25MPa, continues 1-3s；Second segment left side inlet amount
1.5-2.3mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.1-0.5mm/s, and the left and right sides enters liquid
The oily pressure of compressing cylinder is 20-30MPa, and the fluid pressure inside pipeline is 30-35MPa, continues 1-3s；3rd section
Left side inlet amount 1.0-2.0mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.1-0.5mm/s, left
The oily pressure that right both sides enter hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is 45-55MPa, is continued
1-3s；4th section of left side inlet amount 1.0-2.0mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are
0.1-0.5mm/s, the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is
60-70MPa, continues 1-3s；5th section of left side inlet amount 0.1-0.5mm/s (i.e. process from left side pipeline to middle extruding),
Right side inlet amount is 0.1-0.5mm/s, and the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, inside pipeline
Fluid pressure is 120-130MPa, continues 1-3s.
The bright annealing being annealed under 950-1050 DEG C of high temperature of temperature of above-mentioned steps (4) of the present invention.
Above-mentioned steps (5) of the present invention cause part outer surface laminating mold cavity after under 125-130MPa pressurize 2-5s.
The advantages of the present invention：
1. its key point of technique of the invention is the order of its processing, i.e., straight tube hydraulic pressure first is modified into T-shaped straight tee (ST.TEE),
The process is easy to process, technical maturity, it is easy to operate, and can easily carry out axial supplement, and T-shaped straight the three of acquisition
Logical straight tube wall thickness is controllable；Additionally, without adding in the forming process of straight tee (ST.TEE), it is not required that use many molds instead,
By six sections of precise controls of shaped by fluid pressure parameter in one set of die, the straight tee (ST.TEE) pipe fitting for meeting use condition is obtained；By
It is high in the tube wall ratio of briquetting that is evenly distributed using six sections of incremental deformation patterns, the straight tee (ST.TEE) pipe fitting for being, and for follow-up
Bend pipe and shaping provide good basis and premise.
2. preparation method of the invention, by the way of the straight tube other end bend pipe of one end, it is to avoid the bending that whole bend pipes bring
The corrugated problem of part interior angle, and distribution has carried out mould and has bent into prefabricated component and annealing operation before shaping, it is ensured that
The stability of material property, for follow-up shaping provides good basis and premise, and straight tee (ST.TEE) intermediate projections portions
Position is vertical with flexure plane, and the corrugated problem of crooked position interior angle is also overcome to a certain degree, and final products of the present invention enter
Go Shape correction, and it is five sections strictly to control truing phase so that final shaped article yield rate is greatly improved, gram
Special-shaped t-bend ridging defect is taken.
Brief description of the drawings
The T-shaped straight tee (ST.TEE) structural representation of the invention of accompanying drawing 1.
Bend pipe three-port structure schematic diagram prepared by the inventive method of accompanying drawing 2.
The T-shaped straight tee (ST.TEE) of the invention of accompanying drawing 3 prepares mould structure schematic diagram.
Specific embodiment
The present invention is described in detail with reference to specific embodiment, but the present invention is not limited solely to following examples.
Embodiment
Using son as a example by 1Cr18Ni9Ti stainless steel tube materials, then the method according to the invention, prepares such as the institute of accompanying drawing 2
State the product of structure：
(1) blanking：By a diameter of 38mm of commercially available 1Cr18Ni9Ti, the stainless steel tube of thickness 1.3mm is according to shaping zero
Length required for part, cut into the straight tube of length 30cm；
(2) it is molded straight tee (ST.TEE)：Using inner high voltage forming technique (fluid power shaping) directly by the circular pipe of step (1)
T-shaped straight tee (ST.TEE) is made, i.e., circular pipe is placed on T-shaped mould tool using hydraulic molding technique, be provided with T-shaped mould tool
Die cavity, die cavity includes the cross through hole and longitudinal hole that are mutually orthogonal to one another, and described circular pipe is placed in horizontal stroke
T-shaped straight tee (ST.TEE) pipe is obtained to shaped by fluid pressure in through hole, is then carried out；Shaped by fluid pressure is divided into six sections of operations, first paragraph left side
Inlet amount 0.5mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 1.5mm/s, and the left and right sides enters
The oily pressure of hydraulic jack is 25MPa, and the fluid pressure inside pipeline is 20MPa, continues 2s；Second segment left side
Inlet amount 3.4mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.5mm/s, and the left and right sides enters
The oily pressure of hydraulic jack is 25MPa, and the fluid pressure inside pipeline is 30MPa, continues 2s；3rd section of left side
Inlet amount 3.2mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.4mm/s, and the left and right sides enters
The oily pressure of hydraulic jack is 25MPa, and the fluid pressure inside pipeline is 40MPa, continues 1-3s；4th section of left side
Inlet amount 3.0mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.3mm/s, and the left and right sides enters
The oily pressure of hydraulic jack is 25MPa, and the fluid pressure inside pipeline is 50MPa, continues 2s；5th section of left side
Inlet amount 2.8mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.2mm/s, and the left and right sides enters
The oily pressure of hydraulic jack is 25MPa, and the fluid pressure inside pipeline is 60MPa, continues 3s；6th section of left side
Inlet amount 2.6mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.1mm/s, and the left and right sides enters
The oily pressure of hydraulic jack is 25MPa, and the fluid pressure inside pipeline is 70MPa, continues 2s；16mm in the middle of obtaining
The straight tee (ST.TEE) of boss high.
(3) bend pipe：The one end for the T-shaped straight tee (ST.TEE) pipe that step (2) is obtained keeps straight tube, the other end to use bending machine
Bent, the bending radius (i.e. the radius of the bending circular arc of bend pipe central axis) of bending section and the caliber of bend pipe
The ratio between (radius) is 1.3-1.6；Then pipe after bending is placed in shaping mould and is extruded, it is pre- required for obtaining
(that is the planform according to final part carries out pre- press-bending to forming part to the pipe that one end bends, it is to avoid follow-up curved
During pipe three-way forming, the defects such as overlap are produced)；
(4) anneal：Step (3) acquisition preformed part is made annealing treatment, machining stress is eliminated, at 1000-1050 DEG C
Under carry out bright annealing；
(5) it is molded bend pipe threeway：The sweep tee after annealing, inner high voltage mould is put into, carries out inner high voltage hydraulic pressure
Shaping so that part outer surface laminating mold cavity；Inner high voltage shaped by fluid pressure is divided into five sections of operations, the charging of first paragraph left side
Amount 1.0mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 1.0mm/s, and the left and right sides enters hydraulic pressure
The oily pressure of oil cylinder is 25MPa, and the fluid pressure inside pipeline is 20MPa, continues 2s；The charging of second segment left side
Amount 1.8mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.2mm/s, and the left and right sides enters hydraulic pressure
The oily pressure of oil cylinder is 25MPa, and the fluid pressure inside pipeline is 35MPa, continues 1-3s；3rd section of left side charging
Amount 1.5mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.2mm/s, and the left and right sides enters hydraulic pressure
The oily pressure of oil cylinder is 25MPa, and the fluid pressure inside pipeline is 50MPa, continues 2s；4th section of left side charging
Amount 1.3mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.2mm/s, and the left and right sides enters hydraulic pressure
The oily pressure of oil cylinder is 25MPa, and the fluid pressure inside pipeline is 65MPa, continues 1.5s；5th section of left side charging
Amount 0.2mm/s (i.e. left side pipeline is to the middle process for extruding), right side inlet amount are 0.2mm/s, and the left and right sides enters hydraulic pressure
The oily pressure of oil cylinder is 25MPa, and the fluid pressure inside pipeline is 125MPa, continues 2s；Then pressurize 2s.
Technique of the invention：
If accompanying drawing 3, first time straight tee (ST.TEE) are that the concrete structure of the mould of T-shaped threeway includes upper mould 1, lower mould 2 is right
Sealing ring 3, the right side cuts somebody's hair 4, left sealing ring 5, and a left side is cut somebody's hair 6, groove 9；Lower mould is arranged on mould bases lower inside, lower mould
Surface on depression be formed with a T-shaped groove.The identical composition circular closed loop of the groove size of upper die and lower die after matched moulds.
The laterally disposed circular pipe fitting of threeway, its two ends connection right side is cut somebody's hair and cut somebody's hair with a left side, cuts somebody's hair and right-left seal circle is set between through hole.
Described upper mould is symmetrical with the structure of lower mould, is arranged on the surface of lower mould.A described left side is cut somebody's hair and is provided with fuel feed hole 11,
It is connected with the recharging oil device of hydraulic press.Cut somebody's hair and do not set oil through in the described right side.Cut somebody's hair to be cut somebody's hair with a left side and be equipped with week in front portion in the right side
To groove, for being embedded in right sealing ring and the sealing of left sealing ring, cut somebody's hair into after groove, sealing ring is close to groove inner wall
Sealing.Start hydraulic press, the right side is cut somebody's hair and slowly feed forward, when initial pipe end face is come into contact with, continue to feed
Until compressing；A left side is cut somebody's hair and slowly feed forward, during to the end face for coming into contact with initial pipe, feed-disabling；Start
The recharging oil device of hydraulic press, leads to oil since the oil through 11 that a left side is cut somebody's hair.Go out when the right side place of cutting somebody's hair oil spill and by inner air tube
When draining substantially, the hydraulic press right side is cut somebody's hair and slowly feed upwards, until the right side of initial pipe line part position is blocked, no longer
During spillage oil, the operation of logical oil exhaust is completed；Close upper mould, and is bolted；Start the supercharging device of hydraulic press,
Liquid in pipe is set slowly to be pressurized, blunting of attention supercharging prevents tubing from bursting.Left and right slow feeding inwards of cutting somebody's hair is controlled simultaneously,
Feed supplement is sufficient when making tube bulge；After tubing fits hydraulic expanding die die cavity completely, by hydraulic press release；Control liquid
Left and right the cutting somebody's hair of press is return；Mould in opening, and take out three-way pipe.Said process realizes that straight tee (ST.TEE) is molded.
The mould structure for being molded bend pipe threeway is essentially identical with first time, and unique difference is that the shape of groove is different, therefore,
Will not be repeated here.
Shaping straight tee (ST.TEE)：Threeway position most minimal thickness 1.16 after shaping, boss most minimal thickness is 1.09mm.By this work
Skill, effectively improves the difficult point in shaping.Material thickness 1.5mm boss heights 0.4D (D is pipe diameter), pipe
Footpath 38mm, most minimal thickness 1.05mm.
Comparative example
Using traditional blanking, --- --- --- shaping --- annealing --- for the first time is molded for second bend pipe for annealing；
Design parameter：Bend pipe：Bending radius 55mm, outside most minimal thickness 1.28mm after bend pipe；
Shaping：The unilateral 18mm of axial supplement (tubing Instability wrinkling after the increasing of feed supplement amount), first time briquetting pressure 70MPa,
Second briquetting pressure 120MPa, threeway most minimal thickness is 0.85mm after being molded twice.Far customer requirement is not reached.
Knowable to above-described embodiment and comparative example, product compound use requirement prepared by the inventive method.
Claims (5)
1. a kind of preparation method of bend pipe three-way pipe, it is characterised in that step includes：
(1) blanking：Circular pipe, the length according to required for forming part are cut；
(2) it is molded straight tee (ST.TEE)：The circular pipe of step (1) is directly made T-shaped straight three using inner high voltage forming technique
It is logical, i.e., circular pipe is placed on T-shaped mould tool using hydraulic molding technique, it is provided with die cavity, T in T-shaped mould tool
Type die cavity includes the cross through hole and longitudinal hole that are mutually orthogonal to one another, and described circular pipe is placed in cross through hole, so
After carry out shaped by fluid pressure and obtain T-shaped straight tee (ST.TEE) pipe；
(3) bend pipe：The one end for the T-shaped straight tee (ST.TEE) pipe that step (2) is obtained keeps straight tube, the other end to use bending machine
Bent, the ratio between the bending radius of bending section and the caliber of bend pipe are 1.3-1.6；Then pipe after bending is placed in whole
Extruded in shape mould, the preformed part required for obtaining；
(4) anneal：Step (3) acquisition preformed part is made annealing treatment, machining stress is eliminated；
(5) it is molded bend pipe threeway：The sweep tee after annealing, inner high voltage mould is put into, carries out inner high voltage hydraulic pressure
Shaping so that part outer surface laminating mold cavity.
2. the preparation method of bend pipe three-way pipe according to claim 1, it is characterised in that the hydraulic pressure of step (2) into
It is 1.2-1.6mm/s, the left and right sides that type is divided into inlet amount 0.4-0.6mm/, right side inlet amount on the left of six sections of operations, first paragraph
Oily pressure into hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is 15-25MPa, continues 1-3s；
Inlet amount 3.0-3.6mm/s, right side inlet amount are 0.3-0.6mm/s on the left of second segment, and the left and right sides enters the oil of hydraulic jack
Pressure be 20-30MPa, fluid pressure inside pipeline is 25-35MPa, continues 1-3s；3rd section of left side inlet amount
3.0-3.5mm/s, right side inlet amount are 0.3-0.6mm/s, and the oily pressure that the left and right sides enters hydraulic jack is
20-30MPa, the fluid pressure inside pipeline is 35-45MPa, continues 1-3s；4th section of left side inlet amount 2.5-3.5mm/s,
Right side inlet amount is 0.3-0.6mm/s, and the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, inside pipeline
Fluid pressure is 45-55MPa, continues 1-3s；Inlet amount 2.2-3.0mm/s, right side inlet amount are on the left of in the of 5th section
0.2-0.5mm/s, the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is
55-65MPa, continues 1-3s；Inlet amount 2.2-3.0mm/s, right side inlet amount are 0.05-0.3mm/s on the left of in the of 6th section, left
The oily pressure that right both sides enter hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is 65-75MPa, is continued
1-3s。
3. the preparation method of bend pipe three-way pipe according to claim 1, it is characterised in that step (5) inner high voltage liquid
Molded to be divided into five sections of operations, first paragraph left side inlet amount 0.5-1.5mm/s, right side inlet amount are 0.5-1.5mm/s, left and right
The oily pressure that both sides enter hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is 15-25MPa, is continued
1-3s；Inlet amount 1.5-2.3mm/s, right side inlet amount are 0.1-0.5mm/s on the left of second segment, and the left and right sides enters hydraulic oil
The oily pressure of cylinder is 20-30MPa, and the fluid pressure inside pipeline is 30-35MPa, continues 1-3s；3rd section of left side
Inlet amount 1.0-2.0mm/s, right side inlet amount are 0.1-0.5mm/s, and the oily pressure that the left and right sides enters hydraulic jack is
20-30MPa, the fluid pressure inside pipeline is 45-55MPa, continues 1-3s；4th section of left side inlet amount 1.0-2.0mm/s,
Right side inlet amount is 0.1-0.5mm/s, and the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, inside pipeline
Fluid pressure is 60-70MPa, continues 1-3s；Inlet amount 0.1-0.5mm/s, right side inlet amount are on the left of in the of 5th section
0.1-0.5mm/s, the oily pressure that the left and right sides enters hydraulic jack is 20-30MPa, and the fluid pressure inside pipeline is
120-130MPa, continues 1-3s.
4. the preparation method of bend pipe three-way pipe according to claim 1, it is characterised in that step (4) are annealed into
Bright annealing in the case where temperature is 950-1050 DEG C of high temperature.
5. the preparation method of bend pipe three-way pipe according to claim 1, it is characterised in that step (5) causes zero
Part outer surface laminating mold cavity after under 125-130MPa pressurize 2-5s.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814564.3A CN106734340B (en) | 2015-11-23 | 2015-11-23 | A kind of preparation method of bend pipe tee tube |
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| CN201510814564.3A CN106734340B (en) | 2015-11-23 | 2015-11-23 | A kind of preparation method of bend pipe tee tube |
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| CN106734340B CN106734340B (en) | 2019-03-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108397266A (en) * | 2018-04-26 | 2018-08-14 | 清华大学苏州汽车研究院（相城） | A kind of monolith honeycomb catalysts intake elbow hot gas bulging process equipment and processing technology |
| CN109175059A (en) * | 2018-10-10 | 2019-01-11 | 江苏新阳光管业科技有限公司 | Risen the method for processing groove inner liner stainless steel elbow using water |
| CN109622661A (en) * | 2019-01-16 | 2019-04-16 | 中山市佰斯特自动化设备有限公司 | A kind of three-way forming dotting integrated machine |
| CN111589895A (en) * | 2020-05-13 | 2020-08-28 | 佛山市南海和信福莱克思金属制品有限公司 | Production equipment of pipe joint with double convex rings |
| CN113953360A (en) * | 2021-10-21 | 2022-01-21 | 河北海航管道制造有限公司 | Manufacturing process and die for cold extrusion steel seamless Y-shaped tee joint |
| CN114700388A (en) * | 2022-04-28 | 2022-07-05 | 太原理工大学 | Forming method for thin-wall multi-way composite pipe fitting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108397266A (en) * | 2018-04-26 | 2018-08-14 | 清华大学苏州汽车研究院（相城） | A kind of monolith honeycomb catalysts intake elbow hot gas bulging process equipment and processing technology |
| CN109175059A (en) * | 2018-10-10 | 2019-01-11 | 江苏新阳光管业科技有限公司 | Risen the method for processing groove inner liner stainless steel elbow using water |
| CN109622661A (en) * | 2019-01-16 | 2019-04-16 | 中山市佰斯特自动化设备有限公司 | A kind of three-way forming dotting integrated machine |
| CN111589895A (en) * | 2020-05-13 | 2020-08-28 | 佛山市南海和信福莱克思金属制品有限公司 | Production equipment of pipe joint with double convex rings |
| CN113953360A (en) * | 2021-10-21 | 2022-01-21 | 河北海航管道制造有限公司 | Manufacturing process and die for cold extrusion steel seamless Y-shaped tee joint |
| CN113953360B (en) * | 2021-10-21 | 2023-11-28 | 河北海航管道制造有限公司 | Manufacturing process and die for cold extrusion steel seamless Y-shaped tee joint |
| CN114700388A (en) * | 2022-04-28 | 2022-07-05 | 太原理工大学 | Forming method for thin-wall multi-way composite pipe fitting |
| CN114700388B (en) * | 2022-04-28 | 2023-09-08 | 太原理工大学 | Forming method for thin-wall multi-way composite pipe fitting |
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