CN116810405A - Production line and production method for manufacturing superfine seamless metal tube - Google Patents

Abstract

The application relates to the field of extrusion molding, in particular to a production line and a production method for manufacturing an ultrafine seamless metal pipe, wherein the production line comprises a feeding mechanism, the feeding mechanism comprises a first material frame and a second material frame, the first material frame is used for releasing a metal coiled material, and the second material frame is used for rolling the metal coiled material; the first cutting mechanism is arranged between the first material frame and the second material frame and is used for cutting out hollow areas on the metal coiled material, and the raw material of the metal coiled material between the adjacent hollow areas is a coiled pipe raw material; the extrusion mechanism is arranged between the first cutting mechanism and the second material frame and is used for rolling the coiled pipe raw material into an ultrafine metal pipe; the welding mechanism is arranged between the extrusion mechanism and the second material rack and is used for fully welding gaps on the side wall of the superfine metal pipe to form the superfine seamless metal pipe; and the second cutting mechanism is arranged between the welding mechanism and the second material frame and is used for cutting the metal pipe which is formed into the ultra-fine seamless from the metal coiled material. Benefits of this production line for manufacturing ultra-fine seamless metal pipes include high production efficiency.

Description

Production line and production method for manufacturing superfine seamless metal tube

Technical Field

The application relates to the field of extrusion molding, in particular to a production line and a production method for manufacturing an ultrafine seamless metal tube.

Background

The present CN212821813U is a patent applied by the inventor in 2020 and is made into ultra-fine seamless metal tube by injection molding, but the injection molding method requires the procedures of heating metal powder, injection molding, cooling and forming in a mold, etc. to produce each mold product, which requires a long time and has a problem of insufficient production efficiency.

Disclosure of Invention

In order to solve the technical problems, the application aims to: a production line and a production method for manufacturing an ultrafine seamless metal tube are provided, and the production efficiency is high.

The application adopts the technical scheme that: a production line for manufacturing ultra-fine seamless metal pipes, comprising:

a production line for manufacturing ultra-fine seamless metal pipes for processing metal coils, comprising: the feeding mechanism comprises a first material rack and a second material rack, the first material rack is used for releasing the metal coiled material, and the second material rack is used for rolling the metal coiled material; the first cutting mechanism is arranged between the first material frame and the second material frame and is used for cutting out hollow areas on the metal coiled material, and the raw material of the metal coiled material between the adjacent hollow areas is a coiled pipe raw material; the extrusion mechanism is arranged between the first cutting mechanism and the second material frame and is used for rolling the coiled pipe raw material into an ultrafine metal pipe; the welding mechanism is arranged between the extrusion mechanism and the second material frame and is used for fully welding gaps on the side wall of the superfine metal pipe to form the superfine seamless metal pipe; and the second cutting mechanism is arranged between the welding mechanism and the second material frame and is used for cutting the metal pipe which is formed into the ultra-fine seamless metal pipe from the metal coiled material.

The production line for manufacturing the ultra-fine seamless metal pipe takes the metal coiled material as the production raw material, and can continuously produce; in the case of a sufficiently large width of the metal coil, it is also possible to increase the yield by increasing the number of hollowed-out areas distributed over its width, and by increasing the working force per station, for example, increasing the number of cutting tools of the first cutting mechanism, increasing the number of welding guns of the welding mechanism, etc.

As a further improvement of the technical scheme, the feeding mechanism further comprises a feeding roller set and a pulling mechanism; the feeding roller set is arranged between the first material frame and the first cutting mechanism; the material pulling mechanism is arranged on the left side of the second material rack and is used for clamping the metal coiled material and pulling the metal coiled material rightwards; the sorting mechanism is arranged between the second cutting mechanism and the material pulling mechanism and is used for sorting the ultra-fine seamless metal tubes. The feeding roller group is used for providing power for releasing the metal coiled material, and the material pulling mechanism is used for providing power for winding the metal coiled material.

As a further improvement of the above technical solution, a positioning feature processing mechanism is further provided between the first material frame and the first cutting mechanism, and the positioning feature processing mechanism is used for processing positioning features on the metal coiled material. The positioning feature processing mechanism may be a laser engraving mechanism or a stamping mechanism, etc.

As a further improvement of the above technical solution, the positioning feature processing mechanism is a punching mechanism, and the punching mechanism can punch out a plurality of positioning features arranged front and back on the metal coiled material; the first cutting mechanism, the extrusion mechanism, the welding mechanism and the second cutting mechanism all comprise positioning columns, and after the metal coiled material moves rightwards for a certain distance, the positioning columns can be downwards spliced with the positioning features. The positioning column is matched with the positioning feature, so that the metal coiled material can be positioned before processing, and the processing precision is ensured.

As a further improvement of the technical scheme, the extrusion mechanism comprises a prepressing mechanism and a forming mechanism, wherein the prepressing mechanism is used for extruding the coiled pipe raw material into a strip-shaped blank with a U-shaped cross section, and the forming mechanism is used for extruding the strip-shaped blank into an ultrafine metal pipe with a round or oval cross section.

As a further improvement of the technical scheme, the pre-pressing mechanism comprises a pre-pressing upper die, a pre-pressing die core and a pre-pressing lower die, wherein a pre-pressing die cavity is arranged in the pre-pressing lower die, the lower end of the pre-pressing upper die moves downwards and is abutted with the coiled pipe raw material on the pre-pressing die core, the pre-pressing lower die is lifted upwards for a certain distance, and the coiled pipe raw material is extruded into a strip-shaped blank with a U-shaped section by the inner wall of the pre-pressing die cavity; the molding mechanism comprises a molding upper die and a molding lower die which can move up and down relatively to extrude the strip-shaped blank into an ultrafine metal tube; the number of the pre-pressing upper die, the pre-pressing die core, the pre-pressing lower die, the number of the forming upper die and the number of the forming lower die are more than two; the pre-pressing upper die is arranged back and forth, the pre-pressing die cores are arranged back and forth, the pre-pressing lower die is arranged back and forth, the forming upper die is arranged back and forth, and the forming lower die is arranged back and forth. According to the technical scheme, a plurality of ultra-fine seamless metal pipes can be formed on the width of the metal coiled material at the same time.

As a further improvement of the above technical solution, the second cutting mechanism includes a plurality of cutting tools arranged in a front-rear direction, and the plurality of cutting tools are arranged front-rear and can simultaneously move downward to cut the ultrafine metal tube.

A method for producing an ultra-fine seamless metal pipe, comprising the steps of:

s1, conveying a metal coiled material;

s3, cutting out the sheet waste on the metal coiled material, forming hollow areas on the metal coiled material, and forming a coiled pipe raw material between adjacent hollow areas;

s4, extruding the coiled pipe raw material into an ultrafine metal pipe;

s5, welding the superfine metal pipe, and fully welding gaps on the side wall of the superfine metal pipe to form a superfine seamless metal pipe;

s6, cutting the ultra-fine seamless metal tube from the metal coiled material.

As a further improvement of the above technical solution, between S1 and S3, further includes: s2, processing positioning features on the metal coiled material.

As a further improvement of the above technical solution, S6 further includes: and S7, after the ultra-fine seamless metal tube is visually detected, the ultra-fine seamless metal tube is picked up from the metal coiled material by using equipment and is collected independently.

The beneficial effects of the application are as follows: can be continuously molded, and a plurality of ultra-fine seamless metal pipes can be molded at one time by using a wide metal coil as a raw material.

Drawings

The application is further illustrated by the following description and examples of the embodiments in conjunction with the accompanying drawings.

FIG. 1 is a front view of a production line for manufacturing ultra-fine seamless metal pipes according to the present application;

FIG. 2 is an ultra-fine seamless metal tube;

FIG. 3 is an embodiment of a metal coil;

FIG. 4 is a schematic illustration of the metal coil of FIG. 3 after being machined with locating features and hollowed-out areas;

FIG. 5 is another embodiment of a metal coil;

FIG. 6 is a schematic illustration of the metal coil of FIG. 5 after being machined with locating features and hollowed-out areas;

FIG. 7 is a right side view of the feed roll set;

fig. 8 is an enlarged view of a portion a of fig. 7;

FIG. 9 is a top view of a feed roll set;

FIG. 10 is a right side view of the indexing feature machine;

fig. 11 is an enlarged view of a portion B of fig. 10;

FIG. 12 is a right side view of the first cutting mechanism;

fig. 13 is an enlarged view of a portion C of fig. 12;

FIG. 14 is a right side view of the pre-compression mechanism;

FIG. 15 is a schematic view of the precompression mechanism prior to precompression;

FIG. 16 is a schematic view of the precompression mechanism at the beginning of precompression;

FIG. 17 is a schematic illustration of the pre-pressing mechanism during pre-pressing;

FIG. 18 is a schematic view of the pre-compression upper die of the pre-compression mechanism upon reset;

FIG. 19 is a schematic view of the prepressing mechanism with the prepressing core reset;

FIG. 20 is a right side view of the molding mechanism;

FIG. 21 is a schematic view of a molding mechanism prior to molding;

FIG. 22 is a schematic illustration of a molding mechanism during molding;

FIG. 23 is a schematic view of the molding mechanism at the completion of molding;

FIG. 24 is a right side view of the welding mechanism;

fig. 25 is an enlarged view of a portion D of fig. 24;

FIG. 26 is a right side view of the second cutting mechanism;

fig. 27 is an enlarged view of the portion E of fig. 26;

fig. 28 is a right side view of the structure shown in section E.

In the figure: 10-metal coiled material, 101-positioning features, 102-hollow areas, 103-coiled pipe raw materials, 104-strip-shaped blanks, 105-ultrafine metal pipes, 106-ultrafine seamless metal pipes, 11-first material racks, 12-second material racks, 13-feeding roller sets, 14-material tanks, 15-material pulling mechanisms, 3-positioning feature processing mechanisms, 4-first cutting mechanisms, 50-extrusion mechanisms, 51-prepressing mechanisms, 511-prepressing upper dies, 512-prepressing mold cores, 513-prepressing lower dies, 52-forming mechanisms, 521-forming upper dies, 522-forming lower dies, 6-welding mechanisms, 7-visual inspection mechanisms, 8-second cutting mechanisms, 81-cutting tools, 91-positioning columns and 92-upper pressing plates.

Detailed Description

Reference will now be made in detail to the present embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present application, but not to limit the scope of the present application.

In the description of the present application, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

In the description of the present application, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1-28, a production line for manufacturing ultra-fine seamless metal pipes for processing a metal coil 10.

Referring to fig. 1, a production line for manufacturing an ultra-fine seamless metal pipe includes, in order: a first material rack 11, a feeding roller group 13, a positioning feature processing mechanism 3, a first cutting mechanism 4, an extrusion mechanism 50, a welding mechanism 6, a second cutting mechanism 8, a sorting mechanism, a material pulling mechanism and a second material rack 12. Wherein the pressing mechanism 50 includes a pre-pressing mechanism 51 and a molding mechanism 52.

FIG. 2 is a drawing showing a finished product of an ultra-fine seamless metal pipe manufactured by the production line for manufacturing an ultra-fine seamless metal pipe. The raw material processed by the production line for manufacturing the ultra-fine seamless metal pipe is the metal coiled material 10 shown in fig. 3 or 5, and the thicknesses of the metal coiled material 10 at different width positions are different.

Referring to fig. 4, the metal coil 10 of fig. 3 is shown after the locating features 101 and the hollowed-out areas 102 are machined.

Referring to fig. 6, the metal coil 10 of fig. 5 is shown after the locating features 101 and the hollowed-out areas 102 are machined.

Referring to fig. 7 to 9, the feed roller set 13 is disposed between the first work frame 11 and the first cutting mechanism 4; the feeding roller set 13 comprises two feeding rollers vertically arranged, the feeding rollers positioned at the lower side are arranged on a trough 14, the width of the trough 14 is consistent with that of the metal coiled material 10, and the feeding roller set 13 is driven to rotate by a motor, so that the metal coiled material 10 clamped in the feeding roller set 13 is conveyed rightward.

Referring to fig. 10 and 11, the positioning feature processing mechanism 3 is used for processing the positioning feature 101 on the metal coiled material 10, the positioning feature processing mechanism 3 is a punching mechanism, the punching mechanism can punch out a plurality of positioning features 101 arranged front and back on the metal coiled material 10, the punching mechanism can adopt conventional punching equipment, and comprises a punching machine table, an upper pressing plate 92 and a punching cutter which are arranged on the punching machine table, the upper pressing plate 92 is driven by a power mechanism such as a motor to press the metal coiled material 10, and then a through hole is processed on the metal coiled material 10 by the punching cutter to serve as the positioning feature 101. The blanking machine is provided with 3 or more blanking tools arranged in the front-rear direction, and 3 or more positioning features 101 can be simultaneously formed in the width direction of the metal coil 10.

Referring to fig. 12 and 13, the first cutting mechanism 4 is configured to cut out hollowed-out areas 102 on the metal coiled material 10, and raw materials of the metal coiled material 10 between adjacent hollowed-out areas 102 are coiled material 103. The positioning column and the upper pressing plate 92 are arranged on the machine table of the first cutting mechanism 4, the metal coiled material 10 is positioned by utilizing the positioning column 91 and the positioning feature 101 which are mutually matched, and redundant materials of the metal coiled material 10 are cut off by utilizing the pressing action of the blanking cutter of the first cutting mechanism 4 to form the hollowed-out area 102. The first cutting mechanism 4 is provided with more than 2 blanking cutters which are arranged along the front-rear direction, more than 2 hollowed areas 102 which are arranged along the front-rear direction can be formed simultaneously, and the blanking cutters, the positioning column 91 and the upper pressing plate 92 are driven by a power mechanism to move downwards and reset.

Referring to fig. 14, the pre-pressing mechanism 51 includes a pre-pressing upper die 511, a pre-pressing die core 512, and a pre-pressing lower die 513, a pre-pressing die cavity being provided in the pre-pressing lower die 513, the pre-pressing die core 512 being provided in the pre-pressing die cavity.

Referring to fig. 15-19, after the metal coil 10 is fed into the pre-pressing mechanism 51, after the metal coil 10 moves rightward by a certain distance, the positioning feature 101 moves right under the positioning post 91, the positioning post 91 is driven downward by the power mechanism to be inserted and connected with the pin, thereby positioning the metal coil 10, then the pre-pressing upper die 511 moves downward until the coil stock 103 is pressed against the pre-pressing die core 512, then moves upward by 513 until the coil stock 103 is pressed into a strip-shaped blank 104 with a U-shaped cross section by the inner wall of the pre-pressing die cavity, and then the positioning post 91, the pre-pressing upper die 511 and the pre-pressing lower die 513 are reset.

The plurality of pre-press molds 511 are arranged in tandem, the plurality of pre-press mold cores 512 are arranged in tandem, and the plurality of pre-press molds 513 are arranged in tandem, whereby the plurality of strip-shaped blanks 104 arranged in tandem can be simultaneously molded.

Referring to fig. 20, the forming mechanism 52 includes an upper forming die 521 and a lower forming die 522, and referring to fig. 21 to 23, a lower forming groove adapted to the bar-shaped blank 104 is provided on the lower forming die 522, an upper forming groove is provided on the upper forming die 521, and the upper forming die 521 and the lower forming die 522 can relatively move up and down to insert the bar-shaped blank 104 into the lower forming groove and the upper forming groove and to press the bar-shaped blank 104 into the ultra-fine metal pipe 105. After the metal coiled material 10 enters the forming mechanism 52, the positioning feature 101 moves to the position right below the positioning post 91, the positioning post 91 is driven by the power mechanism to be inserted into the positioning feature 101 downwards, so that the metal coiled material 10 is positioned, then the power mechanism drives the upper forming die 521 and the lower forming die 522 to be close to each other, the strip-shaped blank 104 is extruded into the ultra-fine metal tube 105, and then the positioning post 91, the upper forming die 521 and the lower forming die 522 are reset.

The number of the upper molding die 521 and the lower molding die 522 is two or more; the plurality of molding upper dies 521 are arranged front to back, and the plurality of molding lower dies 522 are arranged front to back.

Referring to fig. 24, the welding mechanism 6 is used to weld the slit on the side wall of the ultra-fine metal pipe 105 to form an ultra-fine seamless metal pipe 106. Referring to fig. 25, a clamping block is provided on a machine of the welding mechanism 6 for clamping the ultra-fine metal pipe 105, and after the welding head welds the gap on the ultra-fine metal pipe 105, the clamping block is controlled to be released by a power mechanism of the welding mechanism 6, so that the metal coiled material 10 can drive the ultra-fine seamless metal pipe 106 to move rightwards.

Referring to fig. 26, a second cutting mechanism 8 is provided between the welding mechanism 6 and the second work frame 12 for cutting the ultra-fine seamless metal pipe 106 from the metal coil 10.

Referring to fig. 27, the second cutting mechanism 8 includes a plurality of cutting tools 81 arranged in the front-rear direction, the plurality of cutting tools 81 being arranged front-rear and capable of simultaneously moving downward to cut the ultra-fine seamless metal pipe 106, and cut the ultra-fine seamless metal pipe 106 from the metal coil 10. An upper pressing plate 92 is arranged between the cutting tools 81, the upper pressing plate 92 and the cutting tools 81 are driven to be pressed down together by a power mechanism of the second cutting mechanism 8, and the cutting tools 81 are further driven to be pressed down to cut off the end part of the ultra-fine seamless metal tube 106.

A sorting mechanism (not shown) is also included for sorting the ultra-fine seamless metal tube 106, and the ultra-fine seamless metal tube 106 may be sorted manually, by a robot or by other means known in the art.

The material pulling mechanism 15 is used for clamping the metal coiled material 10 and pulling the metal coiled material 10 to the right, and the material pulling mechanism 15 can be a conveyor belt or a conveyor roller mechanism capable of conveying in a gap.

The application also provides a production method of the superfine seamless metal tube, which comprises the following steps:

s1, conveying a metal coiled material 10;

s2, machining the positioning feature 101 on the metal coil 10.

S3, cutting out sheet waste on the metal coiled material 10, forming hollow areas 102 on the metal coiled material 10, and forming a coiled pipe raw material 103 between adjacent hollow areas 102;

s4, extruding the coiled pipe raw material 103 into an ultrafine metal pipe 105;

s5, welding the superfine metal tube 105, and fully welding gaps on the side wall of the superfine metal tube 105 to form a superfine seamless metal tube 106;

s6, cutting the ultra-fine seamless metal tube 106 from the metal coiled material 10.

And S7, after the ultra-fine seamless metal tube 106 is visually detected, the ultra-fine seamless metal tube 106 is picked up from the metal coiled material 10 by using equipment and is collected independently.

The foregoing description of the preferred embodiments of the present application should not be construed as limiting the scope of the application, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims (10)

1. A production line for manufacturing ultra-fine seamless metal pipes for processing metal coils (10), characterized by comprising:

the feeding mechanism comprises a first material rack (11) and a second material rack (12), wherein the first material rack (11) is used for releasing the metal coiled material (10), and the second material rack (12) is used for coiling the metal coiled material (10);

the first cutting mechanism (4) is arranged between the first material frame (11) and the second material frame (12) and is used for cutting out hollowed areas (102) on the metal coiled material (10), and raw materials of the metal coiled material (10) between adjacent hollowed areas (102) are coiled pipe raw materials (103);

the extrusion mechanism (50) is arranged between the first cutting mechanism (4) and the second material rack (12) and is used for rolling the coiled pipe raw material (103) into an ultrafine metal pipe (105);

a welding mechanism (6) arranged between the extrusion mechanism (50) and the second material frame (12) and used for welding the gaps on the side wall of the superfine metal pipe (105) to form a superfine seamless metal pipe (106);

and a second cutting mechanism (8) arranged between the welding mechanism (6) and the second material frame (12) and used for cutting the ultra-fine seamless metal pipe (106) from the metal coiled material (10).

2. A production line for manufacturing ultra-fine seamless metal pipes according to claim 1, wherein:

the feeding mechanism further comprises a feeding roller set (13) and a pulling mechanism (15);

the feeding roller set (13) is arranged between the first material frame (11) and the first cutting mechanism (4) and is used for pulling the metal coiled material (10) on the first material frame (11) rightwards;

the material pulling mechanism (15) is arranged on the left side of the second material frame (12), and the material pulling mechanism (15) is used for clamping the metal coiled material (10) and pulling the metal coiled material (10) rightwards;

the sorting mechanism is arranged between the second cutting mechanism (8) and the material pulling mechanism (15) and is used for sorting the ultra-fine seamless metal tubes (106).

3. A production line for manufacturing ultra-fine seamless metal pipes according to claim 1, wherein:

and a positioning feature machining mechanism (3) is further arranged between the first material frame (11) and the first cutting mechanism (4), and the positioning feature machining mechanism (3) is used for machining positioning features (101) on the metal coiled material (10).

4. A production line for manufacturing ultra-fine seamless metal pipes according to claim 3, wherein:

the positioning feature processing mechanism (3) is a punching mechanism which can punch out a plurality of positioning features (101) arranged front and back on the metal coiled material (10);

the first cutting mechanism (4), the extrusion mechanism (50), the welding mechanism (6) and the second cutting mechanism (8) comprise positioning columns (91), and after the metal coiled material (10) moves rightwards for a certain distance, the positioning columns (91) can be downwards spliced with the positioning features (101).

5. A production line for manufacturing ultra-fine seamless metal pipes according to claim 1, wherein:

the extrusion mechanism (50) comprises a pre-pressing mechanism (51) and a forming mechanism (52), wherein the pre-pressing mechanism (51) is used for extruding the coiled pipe raw material (103) into a strip-shaped blank (104) with a U-shaped cross section, and the forming mechanism (52) is used for extruding the strip-shaped blank (104) into an ultrafine metal pipe (105) with a round or oval cross section.

6. A production line for manufacturing ultra-fine seamless metal pipes according to claim 5, wherein:

the pre-pressing mechanism (51) comprises a pre-pressing upper die (511), a pre-pressing die core (512) and a pre-pressing lower die (513), wherein a pre-pressing die cavity is arranged in the pre-pressing lower die (513), and the pre-pressing die core (512) is arranged in the pre-pressing die cavity;

after the lower end of the pre-pressing upper die (511) moves downwards and is abutted against the coiled pipe raw material (103) on the pre-pressing die core (512), the pre-pressing lower die (513) is lifted upwards for a certain distance, and the coiled pipe raw material (103) is extruded into a strip-shaped blank (104) with a U-shaped cross section by the inner wall of the pre-pressing die cavity;

the forming mechanism (52) comprises a forming upper die (521) and a forming lower die (522), and the forming upper die (521) and the forming lower die (522) can relatively move up and down to extrude the strip-shaped blank (104) into the superfine metal pipe (105);

the number of the pre-pressing upper die (511), the pre-pressing die core (512), the pre-pressing lower die (513), the forming upper die (521) and the forming lower die (522) is more than two;

the pre-pressing upper dies (511) are arranged back and forth, the pre-pressing die cores (512) are arranged back and forth, the pre-pressing dies (513) are arranged back and forth, the forming upper dies (521) are arranged back and forth, and the forming lower dies (522) are arranged back and forth.

7. A production line for manufacturing ultra-fine seamless metal pipes according to claim 1, wherein:

the second cutting mechanism (8) comprises a plurality of cutting tools (81) which are arranged along the front-back direction, and the plurality of cutting tools (81) are arranged front and back and can move downwards simultaneously to cut the superfine metal pipe (105).

8. A production method of an ultra-fine seamless metal pipe based on the production line for manufacturing an ultra-fine seamless metal pipe according to any one of claims 1 to 7, comprising the steps of:

s1, conveying a metal coiled material (10);

s3, cutting out sheet waste on the metal coiled material (10) to form hollow areas (102) on the metal coiled material (10), and forming coiled pipe raw materials (103) between adjacent hollow areas (102);

s4, extruding the coiled pipe raw material (103) into an ultrafine metal pipe (105);

s5, welding the superfine metal tube (105), and fully welding gaps on the side wall of the superfine metal tube (105) to form a superfine seamless metal tube (106);

s6, cutting the ultra-fine seamless metal tube (106) from the metal coiled material (10).

9. A process for producing an ultrafine seamless metal tube according to claim 8, wherein,

also included between S1 and S3 are: s2, machining positioning features (101) on the metal coiled material (10).

10. A process for producing an ultrafine seamless metal tube according to claim 8, wherein,

s6 further comprises: s7, after the ultra-fine seamless metal tube (106) is visually detected, the ultra-fine seamless metal tube (106) is picked up from the metal coiled material (10) and is collected independently.