CN106583490A - Production process of titanium and titanium alloy seamless pipes and used rolling mill foreground material receiving structure - Google Patents
Production process of titanium and titanium alloy seamless pipes and used rolling mill foreground material receiving structure Download PDFInfo
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- CN106583490A CN106583490A CN201611093871.8A CN201611093871A CN106583490A CN 106583490 A CN106583490 A CN 106583490A CN 201611093871 A CN201611093871 A CN 201611093871A CN 106583490 A CN106583490 A CN 106583490A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/04—Lifting or lowering work for conveying purposes, e.g. tilting tables arranged immediately in front of or behind the pass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The invention discloses a production process of titanium and titanium alloy seamless pipes and a used rolling mill foreground material receiving structure. A small-deformation continuous multi-time rolling process is adopted to cyclically carry out pipe rolling, heating and diameter fixing procedures, so that the machining difficulty is reduced, and the machining precision is improved; according to the rolling mill foreground material receiving structure, the lower surface of a material receiving trough and the upper surface of a sliding block are in seamless contact with each other through slopes with consistent angles, so that the sliding block is driven to adjust the height of the material receiving trough; and therefore, the machining difficulty is reduced, the machining precision is improved, and the rolling process can be carried out steadily.
Description
Technical field
The present invention relates to seamless steel tube production technical field, more particularly to a kind of production work of titanium or titanium alloy seamless pipe
Skill and material feeding structure in milling train foreground used.
Background technology
With the development of science and technology, people are to new forms of energy, the utilization rate more and more higher of new material.Titanium or titanium alloy is because of its density
The excellent specific property such as little, specific strength is high, fatigue resistance and resistance to crack extension ability are good, anticorrosive strong, welding performance is good, it is each
Individual field institute pro-gaze.With the continuous development of titanium and its alloy work technology, the market of titanium or titanium alloy seamless pipe is also increasingly
Greatly.But because titanium or titanium alloy elasticity modulus of materials is high, resistance of deformation is big, thermal conductivity is little, the low feature of thermal coefficient of expansion, it is difficult to
Rolling processing is carried out, the rolling processing of heavy caliber titanium or titanium alloy material is especially difficult to.
Traditional titanium or titanium alloy seamless pipe production technology includes two kinds, i.e. hot extrusion cold-drawing technology and hot rolling technology.Heat
Extruding cold-drawing technology makes its product length shorter (less than 6 meters), lumber recovery relatively low (less than 50%).Hot rolling technology is generally by blank
Plus latter roll forming of hot piercing, but because the resistance of deformation of titanium or titanium alloy is larger, hot rolling technology has very big difficult processing
Degree, it is impossible to accurate controlled rolling precision.
The content of the invention
It is an object of the invention to provide a kind of production technology of titanium or titanium alloy seamless pipe and milling train foreground material feeding used
Structure, the method rolled using small deformation amount continuous several times, circulation carries out tube rolling, heating and sizing operation, reduces difficulty of processing,
Machining accuracy is improved, and ensures that the operation of rolling is steadily carried out by milling train foreground material feeding structure.
For achieving the above object, the invention provides following scheme：
A kind of production technology of titanium or titanium alloy seamless pipe, comprises the steps：
A, titanium or titanium alloy blank both ends of the surface process internal point；
B, in the titanium or titanium alloy blank surface brushing protective coating；
C, the titanium or titanium alloy blank is heated in annular furnace；
D, to heating after the titanium or titanium alloy blank carry out perforation process, form hollow billet；
E, the hollow billet is delivered to milling train foreground material feeding structure, adjustment center is high, is rolled, and forms hollow forging；
F, the hollow forging is delivered to combined heating stove, controls the temperature of the hollow forging；
G, the hollow forging is delivered to into sizing mill sizing；
H, the hollow forging is transmitted back to into the milling train foreground material feeding structure, again repeatedly E, F, G process, until the hollow forging
Meet and require；
I, by sizing after the hollow forging be transplanted on arbor press and carry out heat straightening；
J, the hollow forging is carried out sawing, flaw detection operation, the packaging and storage if massless problem；
The protective coating is prepared from by powder and slurry, wherein the powder is by the composition preparation of following weight portion
Into：
SiO220～45 parts；
MoO30～3 part；
Al2O32～5 parts；
Li2CO35～10 parts；
H2BO320～40 parts；
TiO20～5 part；
CaCO33～10 parts；
ZrO25～10 parts；
Na2CO35～10 parts；
0～5 part of MgO；
K2CO35～15 parts；The preparation of above-mentioned material adopts sintering process：Dispensing, ball mill mixing by weight, 1350 DEG C high
Temperature melting, water quenching dried 200 mesh sieves into ball grinds after material, packed；
The slurry is mixed with by the composition of following weight portion and is formed：
0.85 part of sodium polyacrylate；
NaSiO3·9H25 parts of O；
Silane coupling agent KH550 0.1-0.3 parts；
Surfactant JFC 0.3-0.5 parts；
When using, the powder compares 2 with the consumption weight of the slurry:1 mixing and stirring obtains final product the protective coating.
Further, in step B, first the titanium or titanium alloy blank surface is cleared up with ethanol and Electric brush of bristles, it
One layer of protective coating is sprayed afterwards, one layer of protective coating is brushed again Jing after drying, then is inserted in heating furnace Jing after drying
Heating.
Further, in step C, heating-up temperature is no more than more than 5 DEG C of ceiling temperature；With pure day
So gas heating, micro-oxygenation atmosphere in holding furnace, it is to avoid hydrogen is inhaled in heating process.
A kind of milling train foreground material feeding structure of the production technology for the titanium or titanium alloy seamless pipe, including blow tank and
Arrangement for adjusting height, the upper surface of the blow tank is V-arrangement face, axially disposed on the V-arrangement face to have the resistance to wear smooth of polylith first
Plate, first wear-resistant slide plate is located at V-arrangement face both sides, arranges between adjacent first wear-resistant slide plate in V-arrangement face side
There is roller；The arrangement for adjusting height includes the slide block that first driving means drive with it, and the arrangement for adjusting height is arranged on
On base；The lower surface of the blow tank passes through the consistent seamless contact in inclined-plane of angle with the upper surface of the slide block.
Further, the blow tank bottom is provided with the second wear-resistant slide plate, and the blow tank is wear-resisting by described second
Slide plate and the shoe contact.
Further, the first driving means include being arranged on the first motor on the slide block and described first electric
The connected leading screw of machine and the support with the leading screw by rotation parafacies even, the support is fixed on the base.
Further, the milling train foreground material feeding structure also includes material-pulling device, and the material-pulling device is included positioned at described
On base and it is arranged on the support base of the blow tank both sides, frame is on the support base and relative with the support base slides
Pusher, and drive the second driving means of the pusher.
Further, the support base medial surface is provided with chute, and the chute is arranged on the blow tank top, described
Pusher is along the slide.
Further, second driving means include the second motor, and the second motor-driven rotation wheel is rotated, described
Steel wire is wound with rotating wheel, the steel wire is connected with the pusher.
The present invention achieves following technique effect relative to prior art：By what is rolled using small deformation amount continuous several times
Technique, circulation carries out tube rolling, heating and sizing operation, reduces difficulty of processing, improves machining accuracy；Milling train foreground material feeding structure
In, pass through the consistent seamless contact in inclined-plane of angle with the upper surface of slide block by making the lower surface of blow tank, drive slide block
The height of adjustment blow tank, so as to reduce difficulty of processing, improves machining accuracy, ensures that the operation of rolling is steadily carried out.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing that needs are used is briefly described, it should be apparent that, drawings in the following description are only some enforcements of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can be with according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the production technological process of titanium or titanium alloy seamless pipe of the present invention；
Fig. 2 is material feeding structural representation in milling train foreground of the present invention；
Fig. 3 is the titanium alloy seamless pipe surface image for using and being not used embodiment of the present invention brushing protective coating technique；
Fig. 4 is one bringing-up section front view of maintenance tunnel of the present invention；
Fig. 5 is the left view of Fig. 4 maintenance tunnels；
Description of reference numerals：1st, support base；2nd, the first wear-resistant slide plate；3rd, blow tank；4th, the second wear-resistant slide plate；5th, slide block；
6th, leading screw；7th, support；8th, base；9th, shell；10th, passage；11st, heat-insulation layer；12nd, pedestal；13rd, driving means；14th, thermocouple；
15th, partition wall；16th, silk groove；17th, heating element heater；18th, titanium alloy tube.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
It is an object of the invention to provide difficulty of processing is low, machining accuracy is high, the titanium or titanium alloy that the operation of rolling is steadily carried out
The production technology of seamless pipe and material feeding structure in milling train foreground used.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, it is below in conjunction with the accompanying drawings and concrete real
The present invention is further detailed explanation to apply mode.
The production process route of the titanium or titanium alloy seamless pipe of present embodiment is as shown in figure 1, specifically include following steps：
(1) selection (with TC4 materials, as a example by the specification of Φ 325mm × 8) of titanium or titanium alloy blank material：
Diameter tolerance：Φ320mm±2.0；
Ovality：Diameter tolerance ± 1mm；
Charge length：2000±50mm；
End face cuts gradient：No more than 5mm；
Flexibility：Per meter is less than 6mm；
Blank surface must not have crackle, scab, fold, slag inclusion, be mingled with, the surface defect such as shattered crack；
Macrostructure is observed：Must not there are visual visible white point, shrinkage cavity residual in billet cross section acid macrostructure test piece
It is remaining, be layered, be mingled with, skull patch and rimhole；
Blank chemical component, ambient temperature mechanical properties and ultrasonic inspection meet GB/T2965-2007 standards.
(2) measure, weigh, cutting off, external diameter is processed, end face processing internal point
Measured, weighed by production technology dimensional requirement, sawing, while record outside dimension, cutting length.On request
External diameter processing is carried out to blank, below roughness requirements Ra25 carries out chamfering and uses arc transition to both ends of the surface right angle, is painting
Cover closing barrier coating to prepare, record related data.Internal point and chamfering are processed to blank both ends of the surface on special purpose lathe.
(3) blank coating protection
After with ethanol and Electric brush of bristles cleaning blank surface, one layer of special closing barrier coat is sprayed, after 12 hours, then brushed
One layer is applied, then through fed to boiler heating in 12 hours.Titanium or titanium alloy property is very active, under high temperature easily with oxygen, nitrogen, carbon, ferrum
Deng reaction, and it is easy to inhale hydrogen.After brushing paint, when blank is come out of the stove, film is completely unchanged, and blank is thrown falling steel platform
When, film completely falls off, and various chemical reactions when solving blank heating well and inhales hydrogen, and not influence of rolled.
The parts by weight of component of the exfoliated protective coating of titanium or titanium alloy high temperature that present embodiment is adopted for：
SiO229 parts；MoO32 parts；Al2O32 parts；Li2CO37 parts；H2BO324 parts；TiO22.5 part；CaCO3 5.5
Part；ZrO29.5 part；Na2CO38 parts；0.5 part of MgO；K2CO310 parts；0.85 part of sodium polyacrylate；NaSiO3·9H2O 5
Part；0.1 part of Silane coupling agent KH550；0.3 part of surfactant JFC；
When using, powder liquor ratio (weight ratio) 2:1 mixing 0.5h obtains final product sealing paint.Blank material is TC4, is brushed thick
Degree 0.25mm, spontaneously dries 24h.
As a result show：When blank goes out heating furnace, coated film is completely unchanged.Tapping temperature：1080～1100 DEG C of blanks
When falling steel platform and throwing, coated film completely falls off.Various chemical reactions when solving blank heating well and inhale hydrogen
Problem, and not influence of rolled.
The titanium or titanium alloy seamless pipe for using and being not used coating of the present invention is detected according to GB/T 23603-2009, is made
With detecting that surface contamination layer thickness is 73 μM after above-mentioned coating of the present invention, the surface contamination layer thickness for not applying coating of the present invention is
459 μm, surface contamination layer thickness decreases by 84%.Before and after use to shown in such as table 1 and Fig. 3, the image A and B in figure with
Sample A and B are mutually corresponded in table.
Surface contamination layer thickness measuring result (μm) of table 1
(4) annular stove heat
With pure heated by natural gas, micro-oxygenation atmosphere in holding furnace, it is to avoid hydrogen is inhaled in heating process.To adapt to TC4
The characteristic of low thermal conductivity, enters furnace rear and is first preheated.Heating requirements are as follows：
1st, strictly heat by heating cycle, it is impossible to more than more than 5 DEG C of ceiling temperature.
2nd, when titanium or titanium alloy material goes to discharging fire door, three burners on discharging opening are turned down or is closed, it is ensured that adjusted
It is whole to rolling requirements temperature.
3rd, often discharge one will in time fall furnace bottom, make material return partition wall the inside.
4th, during rolling discharging, flue damper is closed, makes burner hearth ensure the burner hearth pressure of rolling requirements.
5th, firing rate 1cm/10 minute；320 minutes heat time heating times.
Table 2TC4 titanium or titanium alloy bar stocks ring oven each bringing-up section temperature requirement
(5) perforation process
1. it is that annular furnace arranges maintenance tunnel to the rollgang on perforating machine foreground to guarantee blank rolling temperature, it is maximum
Limit reduces blank temperature drop.
2. according to titanium or titanium alloy resistance of deformation it is big the characteristics of, Counter-techniques have been carried out to perforating machine and auxiliary equipment and have been changed
Make, main motor current increases to 2200KW*2 by 1600KW*2, thus increasing roll-force.
3. to deform plasticity near transformation temperature good for TC4, but its elastic modelling quantity is little compared with steel, resistance of deformation is high, needs more
Big overall diameter reduction ratio, is just avoided that the generation of card accident is rolled in perforation.
4. TC4 Characteristics of Thermal deformation is good, in addition with bacterium formula piercing process, asking for perforation Mannesmann effect is solved well
Topic, it is ensured that inner surface quality, while needing larger top front reduction ratio, just can guarantee that uniform wall thickness in the middle of hollow billet.
5. roll material, arrival end particular design be have updated, it is ensured that nip rolling normally and hollow billet outer surface quality.It is special
Water wind assembly roller cooling system is designed and produced, it is ensured that roll normal cooling.
6. top carries out special design and making, using chromium, nickel, molybdenum, tungalloy piercing mandrels, top wall thickness and endoporus is special sets
Meter, increases water-cooled ability, and top surface film oxide thickness requirement reaches more than 0.8mm.Simultaneously guide plate adopts special guide plate, improves
Its wearability, effectively reduces deformation drag, it is ensured that hollow billet inside and outside surface quality.
7. perforation process temperature is as follows.
The rolled by piercing mill temperature of table 3
8. adjusting process parameter of boring a hole is as follows.
The perforating machine adjusting process parameter request of table 4
(6) the continuous tube rolling operation of isothermal
Tube rolling is the hollow billet for completing pierced billet equal wall thickness, expanding, extension in this procedure, improves titanium or titanium alloy seamless
Pipe inside and outside surface quality, meets the technological requirement of next procedure.
Ausrolling is described：Perforating machine hollow billet out enters milling train blow tank by turn-down rig, carries out rolling for the first time
System, the hollow forging for rolling out is passed through argon protection, and body two ends are blocked with tampon, anti-oxidation.Entered by turn-down rig and roller-way
Enter combined heating stove, heating and insulation, when body temperature reaches design temperature, are carried out just to 900 DEG C into sizing operation
Secondary tube reducing, tube reducing is completed, and sizing mill is reversed, and body is refunded again in combined heating stove and is heated again and is incubated, when reaching
To requiring temperature, then Jing transmission roller channels and quick turn-down rig are come back in the blow tank of milling train foreground, readjust milling train ginseng
Number carries out secondary rolling, comes and goes and repeats.
1st, specific aim transformation has been carried out to pipe mill and auxiliary equipment, main motor current increases to 2800KW by 1800KW,
Thus increasing roll-force.
2nd, the oblique grid section and turn-down rig in the middle of perforating machine and pipe mill is changed to into quick transfer device, when shortening transfer
Between, reduce hollow billet cooling.
3rd, milling train process temperature is as follows.
The mill milling temperature parameter of table 5
4th, adjustment of rolling mill technological parameter is as follows.
Table adjusting process parameter request of 6 milling train
The secondary adjusting process parameter request of the milling train of table 7
As shown in Fig. 2 material feeding structure in milling train foreground includes base 8, the slide block 5 of the top of base 8 is arranged on, is arranged on slide block
The blow tank 3 of 5 tops and the support base 1 for being arranged on the both sides of blow tank 3.The upper surface of blow tank 3 is V-arrangement face, along axle on V-arrangement face
To the first wear-resistant slide plate of polylith 2 is provided with, the first wear-resistant slide plate 2 is located at V-arrangement face both sides, the adjacent first resistance to wear smooth in V-arrangement face side
Roller is provided between plate 2.The medial surface of support base 1 is provided with chute, and chute is arranged on the top of blow tank 3, and pusher is erected at and props up
On support seat 1 and along slide.The second motor is provided with base, the second motor-driven rotation wheel is rotated, and is wound on rotating wheel
There is steel wire, steel wire is connected with pusher and drives pusher, promotes and be rolled on V-arrangement face material movement.
Arrangement for adjusting height includes the slide block 5 that first driving means drive with it, and arrangement for adjusting height is arranged on base 8
On, first driving means are the motor being arranged on slide block 5, and first driving means drive the leading screw 6 of horizontally set to rotate, leading screw
6 are threaded connection with the support 7 being arranged on base 8, when first driving means are rotated, the band transverse shifting of movable slider 5.Receive
The lower surface of hopper 3 passes through the consistent seamless contact in inclined-plane of angle with the upper surface of slide block 5, when 5 transverse shifting of slide block, promotes
Blow tank 3 is moved up and down.Thus need to only control the rotation direction of leading screw 6 and rotate the number of turns, you can realize to the height of blow tank 3
Control, simple structure, control accuracy is high.Blow tank bottom is provided with the second wear-resistant slide plate 4, and blow tank passes through the second wear-resistant slide plate
4 contact with slide block 5, when because the abrasion of the second wear-resistant slide plate 4 causes the control accuracy of material feeding groove height to decline, only need to change
Second wear-resistant slide plate 4, reduces the maintenance cost of equipment.
As shown in Figures 4 and 5, maintenance tunnel includes multiple partition walls 15 being oppositely arranged, the shell 9 of connection partition wall 15 and passes through
The passage 10 of logical partition wall 15, is circumferentially evenly arranged with a groove 16 on passage 10, heating element heater 17 is wound with silk groove 16, passes through
The setting of partition wall 15 carries out Segmented heating.Heat-insulation layer 11 is built between shell 9 and passage 10 by laying bricks or stones, has arranged on heat-insulation layer 11 and insert
Hole, is equipped with thermocouple 14 in jack.The material of heat-insulation layer 11 includes alumina silicate fiber felt, diatom and cob brick, the thin steel of shell 9
The welding of plate Jing flangings is made, and partition wall 15 and passage 10 are made up of aluminous refractory.
Heating element heater 17 after OCr25Al5 Aludirome filament winding spirality using being through at tunnel liner upper and lower, left and right
Silk groove 16 in.Silk groove 16 is connected with tunnel liner, makes heating element heater 17 directly to radiations heat energy in tunnel.Wall partition type segmentation adds
Heat energy effectively accelerates tunnel programming rate, improves temperature control precision.
Maintenance tunnel guarantees before sizing the temperature-averaging of titanium or titanium alloy and returns using Frequency Induction Heating mode
To the temperature requirement that milling train foreground carries out repeatedly rolling excessively for the second time, the combination property of titanium or titanium alloy pipe refers to after guarantee rolling
Mark.
(7) sizing operation
Sizing operation is the hollow forging that will be rolled through last process, is rolled into final products.Meet related product to perform
Standard.
1. for titanium or titanium alloy thermal coefficient of expansion it is low the characteristics of, R ＆ D design sizing mill finishing groove, it is ensured that production tube
Dimensional accuracy.
2. Sizing Process closes cooling water, high pressure water descaling device, it is ensured that Sizing Process temperature is uniform.
3. sizing process temperature is as follows.
The fixed diameter rolling temperature techniques parameter of table 8
4. fixed diameter process parameter is as follows.
Table 9 first time sizing mill adjusting process parameter request
The second sizing mill adjusting process parameter request of table 10
(8) correction process
Titanium tube temperature, is provided with quick transfer device between sizing mill and arbor press before to ensure correction, quick transfer
Device is the molecular conveyer belt of multigroup roller driven using frequency conversion motor.(total length flexibility is or not flexibility≤1.0mm after correction
More than titanium tube total length 0.10%).Correction temperature is with reference to table 11, slow cooling after correction.
The heat straightening temperature techniques parameter of table 11
(10) by technological requirement sawing end to end, hand inspection, nondestructive inspection, packaging and storage.
Inspection project and requirement：
Product inspection project：This operation is responsible in chemical composition, physical property, hydraulic pressure to every batch of titanium tube etc. by quality inspection portion
Appearance is tested, and the appearance quality, external diameter, ovality, wall thickness, length, straight degree to titanium tube is measured, and filled in《Outward
See inspection log》、《Finished size inspection record》、《Finished chemical inspection record》、《Tension test is recorded》、《Eddy current inspection
Protocol》.
Apply specific case in this specification to be set forth the principle and embodiment of the present invention, above example
Explanation be only intended to help and understand the method for the present invention and its core concept；Simultaneously for one of ordinary skill in the art,
According to the thought of the present invention, will change in specific embodiments and applications.In sum, in this specification
Appearance should not be construed as limiting the invention.
Claims (9)
1. a kind of production technology of titanium or titanium alloy seamless pipe, it is characterised in that comprise the steps：
A, titanium or titanium alloy blank both ends of the surface process internal point；
B, in the titanium or titanium alloy blank surface brushing protective coating；
C, the titanium or titanium alloy blank is heated in annular furnace；
D, to heating after the titanium or titanium alloy blank carry out perforation process, form hollow billet；
E, the hollow billet is delivered to milling train foreground material feeding structure, adjustment center is high, is rolled, and forms hollow forging；
F, the hollow forging is delivered to combined heating stove, controls the temperature of the hollow forging；
G, the hollow forging is delivered to into sizing mill sizing；
H, the hollow forging is transmitted back to into the milling train foreground material feeding structure, again repeatedly E, F, G process, until the hollow forging meets
Require；
I, by sizing after the hollow forging be transplanted on arbor press and carry out heat straightening；
J, the hollow forging is carried out sawing, flaw detection operation, the packaging and storage if massless problem；
The protective coating is prepared from by powder and slurry, wherein the powder is prepared from by the composition of following weight portion：
SiO220～45 parts；
MoO30～3 part；
Al2O32～5 parts；
Li2CO35～10 parts；
H2BO320～40 parts；
TiO20～5 part；
CaCO33～10 parts；
ZrO25～10 parts；
Na2CO35～10 parts；
0～5 part of MgO；
K2CO35～15 parts；The preparation of above-mentioned material adopts sintering process：Dispensing by weight, ball mill mixing, 1350 DEG C of high temperature meltings
Melt, water quenching dried 200 mesh sieves into ball grinds after material, pack；
The slurry is mixed with by the composition of following weight portion and is formed：
0.85 part of sodium polyacrylate；
NaSiO3·9H25 parts of O；
Silane coupling agent KH550 0.1-0.3 parts；
Surfactant JFC 0.3-0.5 parts；
When using, the powder compares 2 with the consumption weight of the slurry:1 mixing and stirring obtains final product the protective coating.
2. a kind of production technology of titanium or titanium alloy seamless pipe according to claim 1, it is characterised in that step B
In, first the titanium or titanium alloy blank surface is cleared up with ethanol and Electric brush of bristles, one layer of protective coating is sprayed afterwards, Jing shines
Brush one layer of protective coating after dry again, then heating in heating furnace is inserted Jing after drying.
3. the production technology of a kind of titanium or titanium alloy seamless pipe according to claim 1, it is characterised in that in the step
In C, heating-up temperature is no more than more than 5 DEG C of ceiling temperature；With pure heated by natural gas, micro-oxygenation gas in holding furnace
Atmosphere, it is to avoid hydrogen is inhaled in heating process.
4. a kind of milling train foreground material feeding structure for the production technology of titanium or titanium alloy seamless pipe described in claim 1, it is special
Levy and be, including blow tank and arrangement for adjusting height, the upper surface of the blow tank is V-arrangement face, is set vertically on the V-arrangement face
The wear-resistant slide plate of polylith first is equipped with, first wear-resistant slide plate is located at V-arrangement face both sides, and V-arrangement face side is adjacent described
Roller is provided between the first wear-resistant slide plate；The arrangement for adjusting height includes the slide block that first driving means drive with it, described
Arrangement for adjusting height is arranged on base；The lower surface of the blow tank and the upper surface of the slide block are by consistent oblique of angle
Contact that face is seamless.
5. a kind of milling train foreground material feeding structure according to claim 4, it is characterised in that the blow tank bottom is provided with
Second wear-resistant slide plate, the blow tank is by second wear-resistant slide plate and the shoe contact.
6. a kind of milling train foreground material feeding structure according to claim 4, it is characterised in that the first driving means include
Leading screw and connected by rotating parafacies with the leading screw that the first motor being arranged on the slide block is connected with first motor
Support, the support is fixed on the base.
7. a kind of milling train foreground material feeding structure according to claim 4, it is characterised in that described also including material-pulling device
Material-pulling device includes being located on the base and be arranged on the support base of the blow tank both sides, frame on the support base and with
The relative pusher for sliding of the support base, and the second driving means for driving the pusher.
8. a kind of milling train foreground material feeding structure according to claim 7, it is characterised in that the support base medial surface is arranged
There is chute, the chute is arranged on the blow tank top, and the pusher is along the slide.
9. a kind of milling train foreground material feeding structure according to claim 8, it is characterised in that second driving means include
Second motor, the second motor-driven rotation wheel is rotated, and steel wire, the steel wire and the pusher are wound with the rotating wheel
Device is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093871.8A CN106583490A (en) | 2016-12-02 | 2016-12-02 | Production process of titanium and titanium alloy seamless pipes and used rolling mill foreground material receiving structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093871.8A CN106583490A (en) | 2016-12-02 | 2016-12-02 | Production process of titanium and titanium alloy seamless pipes and used rolling mill foreground material receiving structure |
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| CN106583490A true CN106583490A (en) | 2017-04-26 |
Family
ID=58595746
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611093871.8A Pending CN106583490A (en) | 2016-12-02 | 2016-12-02 | Production process of titanium and titanium alloy seamless pipes and used rolling mill foreground material receiving structure |
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| CN107570552A (en) * | 2017-09-07 | 2018-01-12 | 鑫鹏源智能装备集团有限公司 | A kind of production method of titanium alloy TC 4 strand hot seamless tube |
| CN109604366A (en) * | 2018-12-11 | 2019-04-12 | 宜兴市惠华复合材料有限公司 | A kind of multiple processing method |
| CN112126267A (en) * | 2020-09-07 | 2020-12-25 | 鑫鹏源(聊城)智能科技有限公司 | High-temperature stripping type protective coating for titanium and titanium alloy |
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| CN109604366A (en) * | 2018-12-11 | 2019-04-12 | 宜兴市惠华复合材料有限公司 | A kind of multiple processing method |
| CN112126267A (en) * | 2020-09-07 | 2020-12-25 | 鑫鹏源(聊城)智能科技有限公司 | High-temperature stripping type protective coating for titanium and titanium alloy |
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Application publication date: 20170426 |