CN114393374B - TC4 titanium alloy square tube production method - Google Patents
TC4 titanium alloy square tube production method Download PDFInfo
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- CN114393374B CN114393374B CN202210039486.4A CN202210039486A CN114393374B CN 114393374 B CN114393374 B CN 114393374B CN 202210039486 A CN202210039486 A CN 202210039486A CN 114393374 B CN114393374 B CN 114393374B
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 238000000137 annealing Methods 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000000047 product Substances 0.000 claims abstract description 16
- 239000011265 semifinished product Substances 0.000 claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000013000 roll bending Methods 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 39
- 230000007306 turnover Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 230000007547 defect Effects 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims 1
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 8
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Arc Welding In General (AREA)
Abstract
The invention provides a production method of a TC4 titanium alloy square tube. The TC4 titanium alloy square tube production method comprises the following steps: s1, selecting raw material pipes; s2, sealing the raw material pipe; s3, preheating the raw material pipe sealed in the step S2, continuously roll-bending and forming by using a universal roll bender after heating, and straightening through a turkish opening after forming to prepare a semi-finished product; s4, packaging the finished products prepared in the step S3; s5, carrying out stress relief annealing treatment on the semi-finished product subjected to the packaging treatment in the step S4; and S6, sawing the semi-finished product subjected to stress relief annealing treatment in the step S5 to obtain the titanium alloy square tube. The TC4 titanium alloy square tube production method provided by the invention can be used for meeting all performance indexes of important industries such as aviation, weapons, nuclear power and the like, the production process is simple and controllable, the yield of finished products can reach more than 96%, the universal roller bender automatically operates, manual operation is not needed, and the important conditions of low-cost and large-scale production are achieved.
Description
Technical Field
The invention relates to the technical field of production of titanium alloy square tubes, in particular to a production method of a TC4 titanium alloy square tube.
Background
At present, the processing of titanium alloy square tubes in China still belongs to the blank field, the traditional production mode is divided into two types, the first type is drawing by a drawing machine, and a large-tonnage drawing machine is adopted to apply tension to the titanium tubes so as to enable the titanium tubes to be plastically deformed, and the defect is that TC4 titanium alloy is a high-strength and high-yield material, high-frequency on-line heating is required, the tube drawing process is heated unevenly, a finished product is flexible, the head and tail clamp positions are required to be cut off by more than 200mm, and raw materials are wasted. And the grinding tool and equipment are easy to damage in the drawing process, and crisis operators are safe.
The second is to use an extruder to carry out extrusion molding, the requirements of extrusion equipment power, load power and hole-type grinding tools on extrusion profiles are extremely high, and in the extrusion process, a plastic deformation core part of the material generates high temperature to damage material tissues and scratch the surface of raw materials easily, so that mass production cannot be carried out.
Therefore, it is necessary to provide a method for producing a TC4 titanium alloy square tube to solve the above technical problems.
Disclosure of Invention
The invention provides a production method of a TC4 titanium alloy square tube, which solves the problem that the yield of square tube sections is to be further improved.
In order to solve the technical problems, the production method of the TC4 titanium alloy square tube provided by the invention comprises the following steps:
S1, selecting raw material pipes;
S2, sealing the raw material pipe;
S3, preheating the raw material pipe sealed in the step S2, continuously roll-bending and forming by using a universal roll bender after heating, and making the raw material pipe pass through a Turkey opening after forming to prepare a semi-finished product;
S4, packaging the finished products prepared in the step S3;
S5, carrying out stress relief annealing treatment on the semi-finished product subjected to the packaging treatment in the step S4;
s6, sawing the semi-finished product subjected to stress relief annealing treatment in the step S5 to obtain a titanium alloy square tube;
s7, cleaning a surface oxide layer and defects on the surface of the titanium alloy square tube subjected to sawing treatment in the step S6 by using a sander, and sanding the surface oxide layer and defects to form a sanded surface;
And S8, carrying out flaw detection treatment on the titanium alloy square tube subjected to the sanding treatment in the step S7 by adopting an ultrasonic flaw detector.
Preferably, in the step S1, a TC4 titanium alloy round tube is selected for the raw material tube, and the size is Φ76x3x4020 mm.
Preferably, in the step S2, two ends of the titanium alloy round tube are plugged by using a titanium alloy round tube cap with diameter of 76 x 2mm, and the connection part is welded and spot welded by argon arc welding.
Preferably, in the step S3, the round tube is heated to 830 ℃ by a box-type electric furnace during preheating, and then the TC4 titanium alloy round tube is fed into a universal roller bending machine by adopting a manual discharging mode.
Preferably, K7-K6-K5-K4-K3-K2-K1 hole patterns are continuously arranged in the universal roller bending machine, and a turkish orifice for straightening is arranged behind the K1 hole patterns.
Preferably, in the step S4, the hydraulic bundling machine is used to bundle the group package, each package is 7 rows, and the total number of the packages is 42 in 6.
Preferably, steel delta 2 XW 32mm specification is used for the wrapping tape in the wrapping process, the common carbon steel strips are bundled in a groined shape with delta 10 XW 40mm, and the joints are welded by argon arc welding to strengthen the shaped wrapping tape.
Preferably, in the step S5, the post-package square tube is put into a pit-type resistance annealing furnace for stress relief annealing, and the temperature is raised to 750 ℃ for stress relief annealing, and the temperature is kept for 15 minutes. The straightness of the annealed square tube after unpacking can reach 2 mm/m.
Preferably, in the step S6, a band sawing machine is used to saw off the caps of the titanium alloy square tubes, which are blocked from the head and the tail, and the size of the square tubes after sawing is 60×60×4000mm.
Preferably, in the step S8, the flaw detection is performed by an ultrasonic flaw detector, the standard is grade a, the medium is water, the flaw detection is qualified as a finished product, and the flaw detection is failed as a waste product.
Compared with the related art, the production method of the TC4 titanium alloy square tube has the following beneficial effects:
The invention provides a production method of a TC4 titanium alloy square tube, the titanium alloy square tube prepared by the process method can meet all performance indexes of important industries such as aviation, weapons, nuclear power and the like, the production process is simple and controllable, the yield of finished products can reach more than 96%, a universal roller bender automatically operates, manual operation is not needed, and the important conditions of low-cost and large-scale production are achieved.
Drawings
FIG. 1 is a sectional view of a method for producing a TC4 titanium alloy square tube provided by the invention;
FIG. 2 is a K1 hole pattern provided by the invention;
FIG. 3 is a K2 hole pattern provided by the invention;
FIG. 4 is a K3 hole pattern provided by the invention;
FIG. 5 is a K4 hole pattern provided by the invention;
FIG. 6 is a K5 hole pattern provided by the invention;
FIG. 7 is a K6 hole pattern provided by the invention;
FIG. 8 is a K7 hole pattern provided by the invention;
FIG. 9 is a three-dimensional view of sanding equipment used for cleaning the surface of a pipe in the TC4 titanium alloy square pipe production method provided by the invention;
FIG. 10 is a schematic view of the interior of the processing chamber shown in FIG. 9;
FIG. 11 is a schematic view of the interior of the roll-over door panel of FIG. 9;
Fig. 12 is a cross-sectional view of the whole shown in fig. 9.
Reference numerals in the drawings:
100. A support frame;
200. The device comprises a treatment box 210, a limit baffle 201 and a blanking hole;
300. The rotating plate 310, the first telescopic piece 320, the transmission frame 330 and the transmission sleeve;
400. Turning over the door plate;
500. the device comprises a mounting frame 510, a second telescopic piece 520, a first clamping plate 530, a steering motor 540 and a second clamping plate;
600. the third telescopic part 610, the linkage frame 620, the operation motor 630 and the sanding roller;
700. The support shaft, 710, the limit disc, 720 and the support spring;
800. A storage box;
900. and a driving push plate.
Detailed Description
The invention will be further described with reference to the drawings and embodiments.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, and fig. 12 in combination, fig. 1 is a cross-sectional view of an embodiment of a method for producing a TC4 titanium alloy square tube according to the present invention; FIG. 2 is a K1 hole pattern provided by the invention; FIG. 3 is a K2 hole pattern provided by the invention; FIG. 4 is a K3 hole pattern provided by the invention; FIG. 5 is a K4 hole pattern provided by the invention; FIG. 6 is a K5 hole pattern provided by the invention; FIG. 7 is a K6 hole pattern provided by the invention; FIG. 8 is a K7 hole pattern provided by the invention; FIG. 9 is a three-dimensional view of sanding equipment used for cleaning the surface of a pipe in the TC4 titanium alloy square pipe production method provided by the invention; FIG. 10 is a schematic view of the interior of the processing chamber shown in FIG. 9; FIG. 11 is a schematic view of the interior of the roll-over door panel of FIG. 9; fig. 12 is a cross-sectional view of the whole shown in fig. 9.
A production method of a TC4 titanium alloy square tube comprises the following steps:
S1, selecting raw material pipes;
S2, sealing the raw material pipe;
s3, preheating the raw material pipe subjected to edge sealing in the step S2, continuously roll-bending and forming by using a universal roll bender after heating, and passing through a turkish opening for straightening after forming to prepare a semi-finished product;
S4, packaging the finished products prepared in the step S3;
S5, carrying out stress relief annealing treatment on the semi-finished product subjected to the packaging treatment in the step S4;
s6, sawing the semi-finished product subjected to stress relief annealing treatment in the step S5 to obtain a titanium alloy square tube;
s7, cleaning a surface oxide layer and defects on the surface of the titanium alloy square tube subjected to sawing treatment in the step S6 by using a sander, and sanding the surface oxide layer and defects to form a sanded surface;
And S8, carrying out flaw detection treatment on the titanium alloy square tube subjected to the sanding treatment in the step S7 by adopting an ultrasonic flaw detector.
The hot working roll bending forming technology is provided, the finished square tube with single length of 4 meters is produced, the finished product yield reaches over 96 percent, the surface of the square tube is glossy, and the square tube material has no cracks, slag inclusion, stable chemical components and standard mechanical properties.
In the step S1, TC4 titanium alloy round tubes with the size of phi 76 multiplied by 3 multiplied by 4020mm are selected for raw material tube selection.
In the step S2, when the edge sealing treatment is carried out, two ends of the titanium alloy round pipe are plugged by phi 76 multiplied by 2mm titanium alloy round pipe caps, and the connecting part is welded and spot welded by argon arc, so that when the titanium alloy round pipe enters and exits the universal roller bending machine, the head and tail parts of the round pipe are not sunken, and the plugging plays a supporting role.
And in the step S3, the round tube is heated to 830 ℃ by a box-type electric furnace during preheating, and then the TC4 titanium alloy round tube is fed into a universal roller bending machine by adopting a manual discharging mode.
K7-K6-K5-K4-K3-K2-K1 hole patterns are continuously arranged in the universal roller bending machine, and a turkish orifice for straightening is arranged behind the K1 hole patterns.
And in the step S4, the hydraulic bundling machine is adopted to bundle the bags in a bundling mode, 7 rows of each bag are arranged in a transverse row, and 42 bags are erected in 6 layers.
The wrapping tape is made of steel delta 2 XW 32mm in the wrapping process, the common carbon steel strips are bundled in a groined shape with the size delta 10 XW 40mm, and the joints are welded by argon arc welding to strengthen the shaping wrapping tape.
And in the step S5, the square tubes after the package are put into a pit-type resistance annealing furnace during stress relief annealing, the temperature is raised to 750 ℃ for stress relief annealing, the heat is preserved for 15 minutes, and the straightness of the square tubes after the annealing can reach the straightness of 2mm/m after the unpacking.
In the step S6, a band sawing machine is selected to saw off the pipe caps of the titanium alloy square pipe, which are blocked at the head and the tail, and the size of the square pipe after sawing is 60 multiplied by 4000mm.
And in the step S8, an ultrasonic flaw detector is used for flaw detection in flaw detection treatment, the standard is A level, the medium is water, the flaw detection is qualified as a finished product, and the flaw detection is unqualified as a waste product.
Compared with the related art, the production method of the TC4 titanium alloy square tube has the following beneficial effects:
The titanium alloy square tube prepared by the process method can meet all performance indexes of important industries such as aviation, weapons, nuclear power and the like, the production process is simple and controllable, the finished product yield can reach more than 96%, the universal roller bending machine automatically operates, manual operation is not needed, and the important conditions of low-cost and large-scale production are achieved.
In a method for producing a titanium alloy square tube profile, after sawing a titanium alloy square tube, it is necessary to perform sanding treatment on the surface, and when the treatment is performed, it is necessary to use a sanding device for TC4 titanium alloy square tubes, comprising:
a support 100;
the bottom of the treatment box 200 is arranged at the top of the support frame 100, and a limit baffle 210 is arranged on the outer surface of the treatment box 200;
The surface of the rotating plate 300 is rotatably mounted on the outer surface of the treatment box 200, a first telescopic member 310 is mounted on the surface of the rotating plate 300, a transmission frame 320 is fixedly mounted at the output end of the first telescopic member 310, and a transmission sleeve 330 is rotatably mounted on the surface of the transmission frame 320;
The surface of the turnover door plate 400 is fixedly arranged on the outer surface of the transmission sleeve 330, and the surface of the turnover door plate 400 is rotatably arranged on the inner side of the treatment box 200 through a rotating shaft;
The device comprises a mounting frame 500, wherein the bottom of the mounting frame 500 is mounted on the inner wall of the treatment box 200, one side of the mounting frame 500 is provided with a second telescopic member 510, the output end of the second telescopic member 510 is rotatably provided with a first clamping plate 520, the other side of the mounting frame 500 is fixedly provided with a steering motor 530, and the output end of the steering motor 530 is provided with a second clamping plate 540;
the third extensible member 600, the surface mounting of third extensible member 600 in the top of upset door plant 400, the link frame 610 is installed to the output of third extensible member 600, the surface mounting of link frame 610 has operation motor 620, the sand smooth roller 630 is installed to the output of operation motor 620.
The support frame 100 adopts stainless steel square pipe to weld and forms to the support frame 100 provides the effect of support for the installation and the use of processing case 200, and limit baffle 210 provides spacingly for the rotation regulation of upset door plant 400, and guarantee upset door plant 400 is in the adjustable range of first extensible member 310, and when the output of first extensible member 310 stretched, upset door plant 400 opened, and when the output of first extensible member 310 contracted, upset door plant 400 closed.
The shaft end of the rotating plate 300 is rotatably installed on the outer surface of the processing box 200, so as to provide support for the rotation of the first telescopic member 310 during the telescopic adjustment, the first telescopic member 310 adopts a hydraulic telescopic rod, and hydraulic equipment in the prior art is equipped during the use, so as to provide a source of power for the telescopic adjustment of the transmission frame 320;
when the output end of the first telescopic piece 310 stretches, the transmission frame 320 is driven to stretch outwards, the transmission frame 320 drives the transmission sleeve 330 to move, the turnover door plate 400 is driven to rotate upwards to be opened when the transmission sleeve 330 moves, when the outer surface of the turnover door plate 400 is abutted with the surface of the limit baffle 210, the first telescopic piece 310 is closed, and the turnover door plate 400 is in a completely opened state, so that convenience is provided for installation and disassembly of the internal titanium alloy square tube section bar;
When the output end of the first telescopic member 310 is contracted, the linkage frame 320 is driven to contract inwards, the transmission frame 320 drives the transmission sleeve 330 to contract and move, the transmission sleeve 330 drives the turnover door plate 400 to rotate towards the inside of the treatment box 200, the turnover door plate 400 is gradually closed when rotating, and when the output end of the first telescopic member 310 is completely contracted, the turnover door plate 400 is completely closed.
The second expansion piece 510 adopts electric telescopic rod, connects external power when using to the output of second expansion piece 510 runs through the surface of mounting bracket 500 just extends to the inboard of mounting bracket 500, the output of second expansion piece 510 with the surface sliding connection of mounting bracket 500 provides power source for the flexible clamp of first grip block 520 is got for carry out the clamp to the titanium alloy square pipe after the installation and is got the operation, cooperates second grip block 540 to use when pressing from both sides getting.
The steering motor 530 connects external power when using, provides power source for the rotation regulation of second grip block 540 to steering motor 530's output runs through the surface of mounting bracket 500 just extends to the inboard of mounting bracket 500, and steering motor 530's output with the surface of mounting bracket 500 rotates to be connected, second grip block 540 with first grip block 520 is on the same axis, the size looks adaptation of both for grip and spacing to titanium alloy side's pipe section bar, provide rotatory support simultaneously.
The third telescopic part 600 adopts a hydraulic telescopic cylinder, hydraulic equipment in the prior art is equipped in use, the output end of the third telescopic part 600 penetrates through the surface of the turnover door plate 400 and extends to the lower side of the turnover door plate 400, the output end of the third telescopic part 600 is in sliding connection with the surface of the turnover door plate 400, a power source is provided for lifting and adjusting the linkage frame 610, and the linkage frame 610 synchronously drives the sanding roller 630 to be adjusted up and down during lifting and adjusting so as to adjust the working height of the sanding roller 630;
The sanding roller 630 is rotatably mounted at the inner surface of the linkage frame 610 at the shaft end, and provides a rotating power source through the operation motor 620, and the operation motor 620 is connected with an external power source when in use, thereby providing stable support for the rotation of the sanding roller 630.
When the device is used, the sawed titanium alloy square tube profile is manually transported to the inside of the processing box 200 in an opened state, the titanium alloy square tube profile is horizontally arranged on the inner side of the mounting rack 500, the second telescopic piece 510 is started, and the second telescopic piece 510 drives the first clamping plate 520 to be matched with the second clamping plate 540 to horizontally clamp the titanium alloy square tube profile;
Starting the first telescopic piece 310, enabling the first telescopic piece 310 to drive the transmission frame 320 to shrink, enabling the transmission frame 320 to pull the turnover door panel 400 to be automatically closed through the transmission sleeve 330, facilitating automatic control of equipment, and closing the first telescopic piece 310 when the turnover door panel 400 is completely closed;
When in operation, the operation motor 620 is preferentially started, the operation motor 620 drives the sanding roller 630 to rotate and run, then the third telescopic piece 600 is started, the third telescopic piece 600 drives the linkage frame 610 to move downwards, and the linkage frame 610 drives the sanding roller 630 in a running state to move downwards and contact with the surface of the titanium alloy square tube section bar to carry out sanding treatment;
When the surface of the titanium alloy square tube section bar needs to be turned, the turning motor 530 is started, and the turning motor 530 drives the titanium alloy square tube clamped at the inner side to be turned to other planes through the second clamping plate 540 and the first clamping plate 520, so that the titanium alloy square tube section bar can be comprehensively treated.
Adopt closed processing case 200 and upset door plant 400, conveniently say that the operation space seals for the surface of titanium alloy side's pipe section bar is when the sanding is handled, and the sweeps that produce can not outwards spread, so that collect the sweeps in a concentrated way, power equipment closed operation simultaneously reduces the noise that produces the external world dry, optimizes the operation environment, provides good operating condition for the user.
Further, a blanking hole 201 is formed in the bottom of the processing box 200, and a storage box 800 is mounted on the top of the supporting frame 110.
The inside of the blanking hole 201 is communicated with the inside of the processing box 200, so that the scraps generated in the sanding process can be blanked downwards through the blanking hole 201;
The scraps directly fall into the inside of the storage box 800 when falling down, so that the scraps can be automatically fallen and collected, and the generated fertilizer can be intensively treated.
The surface movable mounting of mounting bracket 500 in the inside of handling case 200 to the top fixed mounting of mounting bracket 500 has back shaft 700, the bottom of back shaft 700 runs through handling case 200's surface and extends to handling case 200's below, and back shaft 700's surface with handling case 200's surface sliding connection, the bottom fixed mounting of back shaft 700 has spacing dish 710, the top fixed mounting of spacing dish 710 has supporting spring 720, supporting spring 720's top with handling case 200's bottom fixed connection, the internal surface fixed mounting of upset door plant 400 has transmission push pedal 900, transmission push pedal 900's surface is the arc structure, and transmission push pedal 900's surface with the lower surface transmission of mounting bracket 500 is connected.
The supporting spring 720 provides downward elasticity for the supporting shaft 700 through the limiting disc 710, and the supporting shaft 700 synchronously drives the mounting frame 500 to retract downwards and stably to retract in the processing box 200;
The transmission push plate 900 is arranged on the inner surface of the turnover door plate 400, and when the turnover door plate 400 rotates upwards to be opened, the transmission push plate 900 is synchronously driven to rotate upwards, and when the transmission push plate 900 rotates upwards, the installation frame 500 is driven to integrally move upwards, and the installation frame 500 drives the titanium alloy square tube section bar arranged on the inner side to automatically lift upwards and automatically separate from the inside of the treatment box 200, so that the titanium alloy square tube section bar is conveniently installed and detached, sufficient operation space is provided for maintenance personnel, and the problem that the inside space of the treatment box 200 is narrow and inconvenient to install and detach is avoided;
After the titanium alloy square tube section bar is installed, the turnover door plate 400 synchronously drives the transmission push plate 900 to rotate downwards for resetting when being turned downwards to be closed, the mounting frame 500 moves downwards under the action of the downward elastic force of the supporting spring 720, the stability of the surface contact between the surface of the mounting frame 500 and the surface of the transmission push plate 900 is maintained, and meanwhile, the mounting frame 500 drives the titanium alloy square tube section bar installed on the inner side to automatically shrink downwards and reset to the inside of the treatment box 200.
Example 1:
A production method of a TC4 titanium alloy square tube comprises the following production steps:
1. the raw material is TC4 titanium alloy round tubes with the size of phi 76 multiplied by 3 multiplied by 4020mm;
2. The two ends of the titanium alloy round pipe are plugged by phi 76 multiplied by 2mm titanium alloy round pipe caps, and the connecting part is welded and spot welded by argon arc, so that when the titanium alloy round pipe enters and exits the universal roller bending machine, the head and tail parts of the round pipe are not sunken, and the plugging plays a supporting role;
3. Heating the round tube to 830 ℃ by using a box-type electric furnace, then feeding the TC4 titanium alloy round tube into a universal roller bending machine by adopting a manual discharging mode, continuously passing through K7-K6-K5-K4-K3-K2-K1 hole patterns at the passing speed of 11 meters/min, arranging a Turkey mouth for straightening after the K1 hole patterns, and completing plastic deformation and straightening once, wherein a semi-finished product is a 60 multiplied by 4000mm titanium alloy square tube;
4. After the forming is finished, the square tubes are used for carrying out bundling by a hydraulic bundling machine, the steel delta 2 XW 32mm specification is used for bundling, the bundling machine is used for carrying out tightening and pulling, 7 rows of each bundling row are erected, 42 layers of the bundling machine are erected, the bundling machine is bundled by a common carbon steel strip with delta 10 XW 40mm groined shape, and the joint is welded by argon arc welding to strengthen the shaping bundling;
5. stress relief annealing, namely loading the square tubes after the package into a pit annealing furnace, heating to 750 ℃, preserving heat for 1 hour, cooling to room temperature along with the furnace, and discharging the furnace, wherein the straightness of the square tubes after the annealing can reach the straightness of 2mm/m after the unpacking;
6. Sawing off the caps of the titanium alloy square tubes, which are blocked at the head and the tail, by using a band sawing machine, wherein the sizes of the square tubes after sawing are 60 multiplied by 4000mm;
7. And cleaning the surface oxide layer and defects by using a sander, and treating the surface oxide layer and defects into a sandy finish.
8. And (3) carrying out flaw detection by using an ultrasonic flaw detector, wherein the standard is grade A, the medium is water, the flaw detection is qualified as a finished product, and the flaw detection is unqualified as a waste product.
9. After the titanium alloy square tube is processed by the production method, the mechanical properties of the finished titanium alloy square tube with the thickness of 60 multiplied by 4000mm are shown as follows:
10. the dimensional and thickness tolerance of the square tube can meet +/-0.1 mm, the dimension in the length direction is square, the surface of the square tube is glossy, no cracks, no inclusions, uniform tissues and no segregation are generated, and the ultrasonic flaw detection meets the A-level standard.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. The production method of the TC4 titanium alloy square tube is characterized by comprising the following steps of:
S1, selecting raw material pipes;
S2, sealing the raw material pipe;
s3, preheating the raw material pipe sealed in the step S2, continuously roll-bending and forming by using a universal roll bender after heating, and passing through a turkish opening for straightening after forming to prepare a semi-finished product;
S4, packaging the finished products prepared in the step S3;
S5, carrying out stress relief annealing treatment on the semi-finished product subjected to the packaging treatment in the step S4;
s6, sawing the semi-finished product subjected to stress relief annealing treatment in the step S5 to obtain a titanium alloy square tube;
s7, cleaning a surface oxide layer and defects on the surface of the titanium alloy square tube subjected to sawing treatment in the step S6 by using a sander, and sanding the surface oxide layer and defects to form a sanded surface;
s8, carrying out flaw detection treatment on the titanium alloy square tube subjected to the sanding treatment in the step S7 by adopting an ultrasonic flaw detector;
in a method for producing a titanium alloy square tube profile, after sawing a titanium alloy square tube, it is necessary to perform sanding treatment on the surface, and when the treatment is performed, it is necessary to use a sanding device for TC4 titanium alloy square tubes, comprising:
A support frame;
The bottom of the treatment box is arranged at the top of the supporting frame, and a limit baffle is arranged on the outer surface of the treatment box;
The surface of the rotating plate is rotatably arranged on the outer surface of the treatment box, a first telescopic piece is arranged on the surface of the rotating plate, a transmission frame is fixedly arranged at the output end of the first telescopic piece, and a transmission sleeve is rotatably arranged on the surface of the transmission frame;
The surface of the turnover door plate is fixedly arranged on the outer surface of the transmission sleeve, and the surface of the turnover door plate is rotatably arranged on the inner side of the treatment box through a rotating shaft;
The bottom of the mounting frame is mounted on the inner wall of the treatment box, a second telescopic piece is mounted on one side of the mounting frame, a first clamping plate is rotatably mounted at the output end of the second telescopic piece, a steering motor is fixedly mounted on the other side of the mounting frame, and a second clamping plate is mounted at the output end of the steering motor;
The surface of the third telescopic piece is arranged at the top of the turnover door plate, a linkage frame is arranged at the output end of the third telescopic piece, an operation motor is arranged on the outer surface of the linkage frame, and a sand polishing roller is arranged at the output end of the operation motor;
A blanking hole is formed in the bottom of the treatment box, and a storage box is arranged at the top of the support frame;
The surface of the mounting frame is movably mounted in the treatment box, the top of the mounting frame is fixedly provided with a supporting shaft, the bottom end of the supporting shaft penetrates through the surface of the treatment box and extends to the lower side of the treatment box, the surface of the supporting shaft is in sliding connection with the surface of the treatment box, the bottom end of the supporting shaft is fixedly provided with a limiting disc, the top of the limiting disc is fixedly provided with a supporting spring, the top of the supporting spring is fixedly connected with the bottom of the treatment box, the inner surface of the turnover door plate is fixedly provided with a transmission push plate, the surface of the transmission push plate is of an arc structure, and the surface of the transmission push plate is in transmission connection with the lower surface of the mounting frame;
The supporting spring provides downward elasticity for the supporting shaft through the limiting disc, and the supporting shaft synchronously drives the mounting frame to retract downwards and stably retract in the treatment box;
The transmission push plate is arranged on the inner surface of the turnover door plate, the transmission push plate is synchronously driven to rotate upwards when the turnover door plate rotates upwards to be opened, the installation frame is driven to integrally move upwards when the transmission push plate rotates upwards, the installation frame drives the titanium alloy square tube section bar arranged on the inner side to automatically lift upwards and be automatically separated from the inside of the treatment box, so that the titanium alloy square tube section bar is convenient to install and detach, sufficient operation space is provided for maintenance personnel, and the situation that the inner space of the treatment box is narrow and inconvenient to install and detach is avoided;
After the titanium alloy square tube section bar is installed, the overturning door plate synchronously drives the transmission push plate to rotate downwards for resetting when being turned downwards to be closed, the mounting frame downwards moves under the action of the downward elastic force of the supporting spring, the stability of the surface contact between the surface of the mounting frame and the surface of the transmission push plate is kept, and meanwhile the mounting frame drives the titanium alloy square tube section bar installed on the inner side to automatically shrink downwards and reset to the inside of the treatment box.
2. The method for producing a square tube of TC4 titanium alloy according to claim 1, wherein in said step S1, round tubes of TC4 titanium alloy are selected for use in selecting raw materials, and the size is Φ76x3x4020 mm.
3. The method for producing the TC4 titanium alloy square tube according to claim 1, wherein in the step S2, both ends of the titanium alloy round tube are plugged by phi 76 x 2mm titanium alloy round caps during the sealing treatment, and the connecting parts are welded and spot-welded by argon arc welding.
4. The method for producing the TC4 titanium alloy square tube according to claim 1, wherein in said step S3, the raw material tube is heated to 830 ℃ by a box type electric furnace during preheating, and then the TC4 titanium alloy round tube is fed into a universal roll bender by a manual discharging mode.
5. The method for producing a square tube of TC4 titanium alloy according to claim 4, wherein K7-K6-K5-K4-K3-K2-K1 holes are continuously arranged in the universal roll bending machine, and a straightening turkish hole is arranged behind the K1 holes.
6. The method for producing the TC4 titanium alloy square tube according to claim 1, wherein the step S4 is characterized in that a hydraulic bundling machine is adopted to bundle the group package during the group package treatment, 7 rows of each package row are adopted, and 42 layers of the package are erected.
7. The method for producing the TC4 titanium alloy square tube according to claim 6, wherein the wrapping tape is formed by steel delta 2 XW 32mm in the wrapping process, the steel strips are bundled in a groined shape with delta 10 XW 40mm in size, the joints are welded by argon arc welding, and the shaped wrapping tape is reinforced.
8. The method for producing the TC4 titanium alloy square tube according to claim 1, wherein in the step S5, the square tube after the group package is put into a pit-type resistance annealing furnace for stress relief annealing at the temperature of 750 ℃ and is kept for 15 minutes, and the straightness of the square tube after the annealing can reach the straightness of 2mm/m after the unpacking.
9. The method for producing a TC4 titanium alloy square tube according to claim 1, wherein in step S6, a band sawing machine is selected to saw off caps of the titanium alloy square tube, which are blocked from the head and the tail, during the sawing process, and the square tube has a size of 60×60×4000mm after the sawing process.
10. The method for producing a TC4 titanium alloy square tube according to claim 1, wherein in said step S8, flaw detection is performed by an ultrasonic flaw detector, the standard is grade a, the medium is water, flaw detection is qualified as a finished product, and flaw detection failure is rejected.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085183A1 (en) * | 2017-10-30 | 2019-05-09 | 东北大学 | Method for fabricating titanium and titanium alloy metallurgical products |
| CN110280980A (en) * | 2019-07-31 | 2019-09-27 | 西部新锆核材料科技有限公司 | A kind of processing method of aircraft landing gear TC4 titanium alloy seamless tubular goods |
| CN112496052A (en) * | 2020-11-11 | 2021-03-16 | 西部金属材料股份有限公司 | Titanium or titanium alloy seamless square and rectangular tube and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019085183A1 (en) * | 2017-10-30 | 2019-05-09 | 东北大学 | Method for fabricating titanium and titanium alloy metallurgical products |
| CN110280980A (en) * | 2019-07-31 | 2019-09-27 | 西部新锆核材料科技有限公司 | A kind of processing method of aircraft landing gear TC4 titanium alloy seamless tubular goods |
| CN112496052A (en) * | 2020-11-11 | 2021-03-16 | 西部金属材料股份有限公司 | Titanium or titanium alloy seamless square and rectangular tube and preparation method thereof |
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