CN214721609U

CN214721609U - Hot wire TIG inner hole surfacing and CMT flange automatic surfacing dual-purpose equipment

Info

Publication number: CN214721609U
Application number: CN202120736628.3U
Authority: CN
Inventors: 梁显军; 丁辉; 田晓军; 王铁; 张洪军; 陆立军
Original assignee: Shenyang Orient Titanium Industry Co ltd
Current assignee: Shenyang Orient Titanium Industry Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-16
Anticipated expiration: 2031-04-12

Abstract

The utility model relates to a welding equipment, specifically speaking is a dual-purpose equipment of heater TIG hole build-up welding and automatic build-up welding of CMT flange, heater TIG welding system and CMT welding system are connected with portable accurate cross manipulating arm respectively, the portable accurate cross manipulating arm of performance controls the convenience about in the space, borrow rotatory headstock and the realization of servo accurate machine of shifting to the dress card and the rotation of work piece, the lift bearing roller is to work piece height-adjusting, realize overall control coordination through master control PLC system, realize the build-up welding of minor diameter takeover inner wall and flange tube sheet surface. The utility model discloses full play hot wire TIG hole build-up welding utilizes argon arc hot wire welding system and the special argon arc welding aircraft nose of super little flange takeover inner wall build-up welding to realize that minor diameter takeover inner wall welding advantage and CMT welding system are little, fast advantage at flange tube sheet surface welding deformation, share a portable accurate cross operation arm, practiced thrift the manufacturing cost of equipment, improved work efficiency.

Description

Hot wire TIG inner hole surfacing and CMT flange automatic surfacing dual-purpose equipment

Technical Field

The utility model relates to a welding equipment, specifically speaking are hot wire TIG hole build-up welding and automatic dual-purpose equipment of build-up welding of CMT flange.

Background

Surfacing is a common welding technology process. The conventional surfacing mode of the parts of the pressure vessel equipment is mainly manual welding electrode, argon arc welding or manual CMT (cold metal transition technology) surfacing, and the conventional surfacing mode is often difficult to ensure the welding quality, long in surfacing time, low in welding efficiency and unattractive in forming quality. Moreover, the surfacing welding of different processes needs respective welding equipment, and the welding equipment of each process cannot be used simultaneously, so that the resource waste is caused, the cost is high, and a lot of storage space is occupied.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem that exists among the prior art of build-up welding, the utility model aims to provide a dual-purpose equipment of hot wire TIG hole build-up welding and automatic build-up welding of CMT flange.

The purpose of the utility model is realized through the following technical scheme:

the utility model discloses a rotatory power head case, argon arc weld hot wire welding system, special argon arc welding aircraft nose of super small flange connecting pipe inner wall build-up welding, portable accurate cross operation arm, CMT welding system, servo accurate machine of shifting and master control PLC system, wherein rotatory power head case and servo accurate machine of shifting set up on the ground of portable accurate cross operation arm left and right sides respectively, the chuck on the rotatory power head case clamps the work piece that remains to carry out hot wire TIG hole build-up welding, rotatory power head case, portable accurate cross operation arm and servo accurate machine of shifting are connected with master control PLC system respectively, and the last installation of this servo accurate machine of shifting is waited to carry out the work piece of CMT welding; the movable precise cross-shaped operating arm comprises an upright post, a cross beam, a lifting power source, a transmission mechanism A, a motor base, a transverse moving power source and a transmission mechanism B, wherein the lifting power source is installed on the upright post, the output end of the lifting power source is connected with the motor base through the transmission mechanism A, the transverse moving power source is installed on the motor base, the output end of the transverse moving power source is connected with the cross beam which is connected to the motor base in a sliding mode through the transmission mechanism B, and the cross beam and the upright post are vertically arranged and have the freedom degree of lifting along with the motor base and transverse front-back translation; the special argon arc welding aircraft nose of super small flange takeover inner wall build-up welding is installed towards the one end of rotatory power head case to the crossbeam, this special argon arc welding aircraft nose of super small flange takeover inner wall build-up welding with argon arc welding heater welding system links to each other, welder B and send a machine is installed respectively to the other end of crossbeam towards servo accurate positioner, welder B and send a machine to link to each other with CMT welding system respectively.

Wherein: a track is arranged on the ground between the rotary headstock and the servo precise positioner, and an operating machine is connected to the track in a sliding manner; the manipulator comprises a manipulator power source, a base, a driving pulley and a driven pulley, wherein the manipulator power source is arranged on the base, pulleys which can slide on a rail are arranged on two sides of the base, the pulley on one side is connected with the output end of the manipulator power source and is the driving pulley, and the pulley on the other side is the driven pulley; and the upright column in the movable precise cross operating arm is fixed on the base.

The sliding direction of the base on the track is the same as the transverse moving direction of the cross beam, and the track is parallel to the cross beam.

The transmission mechanism A is a chain and sprocket assembly, namely, the upper end and the lower end of the upright post are respectively provided with a sprocket in a rotating way, the upper sprocket and the lower sprocket are connected through a chain, one sprocket is connected with the output end of the lifting power source, and the motor base is fixedly connected to the chain; the lifting power source drives the motor base to lift through the chain and chain wheel assembly, and then the lifting freedom degree of the beam is achieved.

Guide rail A is arranged on each of two sides of the height direction of the stand column, and rollers in rolling connection with the guide rails A are mounted on the left side and the right side of the motor base.

The transmission mechanism B comprises a gear and a rack, the output end of the transverse moving power source is connected with the gear, and the rack is arranged on the cross beam and is in meshing transmission with the gear; the transverse moving power source drives the cross beam to transversely move back and forth relative to the motor base through the gear and the rack, and then transverse moving freedom degree of the cross beam is achieved.

Guide rails B are arranged on the upper side and the lower side of the cross beam on the motor base, and slide blocks in sliding connection with the guide rails B are connected to the upper side and the lower side of the cross beam.

The argon arc welding machine head special for the inner wall surfacing of the ultra-small flanged joint comprises an electric sliding plate driving motor, an electric cross carriage, a connecting rod and a welding gun A, wherein the electric sliding plate driving motor is installed at one end, facing the rotary power head box, of the cross beam, the output end of the electric sliding plate driving motor is connected with the electric cross carriage, the connecting rod is installed on the electric cross carriage, and the welding gun A is fixed on the connecting rod; and the electric slide plate driving motor and the welding gun A are respectively connected with an argon arc welding hot wire welding system.

And a lifting carrier roller for preventing the workpiece from sagging is further installed on the rotary power head box.

The utility model discloses an advantage does with positive effect:

the utility model discloses an one set of equipment realizes two kinds of welding process modes, utilize the CMT welding machine respectively on flange and tube sheet surfacing and the advantage of build-up welding of hot wire TIG welding machine on minor diameter flange takeover inner wall, with the help of the stability and the simple operation nature of portable accurate cross operation arm, carry out whole coordinated control to servo accurate machine of shifting and rotatory power head box through master control PLC system, lift bearing roller etc. through the establishment procedure, accomplish the automatic build-up welding work of takeover flange and tube sheet, the welding quality has been guaranteed, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the movable precision cross manipulator arm of FIG. 1;

FIG. 3 is a top view of the movable precision cross manipulator arm of FIG. 1;

FIG. 4 is a left side view of the structure of the mobile precision cross manipulator arm of FIG. 1;

FIG. 5 is a front view of the structure of the argon arc welding head special for inner wall surfacing of the ultra-small flanged joint pipe in FIG. 1;

FIG. 6 is a structural top view of the argon arc welding head special for inner wall surfacing of the ultra-small flanged joint pipe in FIG. 1;

wherein: the device comprises a rotary power head box 1, a lifting carrier roller 2, an argon arc welding hot wire welding system 3, an argon arc welding head special for inner wall surfacing of an ultra-small flange connecting pipe 4, an electric sliding plate driving motor 401, an electric cross carriage 402, a connecting rod 403, a welding gun A404, a movable precise cross operating arm 5, an upright column 501, a cross beam 502, a lifting power source 503, a chain and sprocket assembly 504, a motor base 505, a traversing power source 506, a gear 507, a rack 508, a guide rail A510, a roller 511, a rail 512, a base 513, a welding gun B, a wire feeder 514, a guide rail B, a sliding block 516, an operating machine power source 517, a CMT welding system 6, a servo precise positioner 7 and a master control PLC system 8.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-6, the utility model comprises a rotary power head box 1, an argon arc welding hot wire welding system 3, an argon arc welding head 4 special for inner wall surfacing of an ultra-small flanged joint, a movable precise cross-shaped operating arm 5, a CMT welding system 6, a servo precise positioner 7 and a master control PLC system 8, wherein the rotary power head box 1 and the servo precision position changing machine 7 are respectively arranged on the ground at the left side and the right side of the movable precision cross operating arm 5, a chuck on the rotary power head box 1 clamps a workpiece to be subjected to hot wire TIG inner hole surfacing welding, the rotary power head box 1, the movable precision cross operating arm 5 and the servo precision position changing machine 7 are respectively connected with a master control PLC system 8, the servo precision position changing machine 7 is provided with the workpiece to be subjected to CMT welding, the clamping, positioning, overturning or rotating of the workpiece is realized through the control of the master control PLC system, the parametric programming is realized, and the automatic surfacing welding is realized. The utility model discloses a master control PLC system 8 is prior art, no longer gives unnecessary details here.

The rotary power head box 1 of the embodiment is a driving system for workpiece rotation, and comprises a headstock, a chuck and a driving head connected with a master control PLC system 8, wherein the driving head comprises a stepping motor and a speed reducer, the headstock is formed by welding a box type mechanism, and a workpiece is clamped by the chuck and is driven by the driving head to rotate. The speed reducer is a worm and gear speed reducer, has a self-locking function, has self-locking performance when the lead angle of the worm of the speed reducer is smaller than the equivalent friction angle between the teeth of the meshing wheel, can realize reverse self-locking, namely, the worm can only drive the worm gear by the worm, but not drive the worm by the worm gear, and ensures that a workpiece stays at any position at any time. The rotation adopts variable frequency stepless speed regulation, and the speed regulation range meets the requirements of various carrier roller welding speeds; the stepping motor is driven by servo stepless speed regulation, constant torque output, stable speed, and quick start or stop particularly at low speed. The clamping of the workpiece is convenient; the chuck uses a three-jaw self-centering chuck, which is a commercially available product, available from yokufu mechanical science and technology, inc. The head frame of the rotary power head box 1 is also provided with a lifting carrier roller 2 for supporting workpieces clamped by a chuck, and the lifting carrier roller 2 is lifted to adapt to workpieces of different sizes, so that the problem that when the workpieces are clamped on the chuck and are extended for a long time, the workpieces sag and the surfacing quality are affected is solved; the lifting carrier roller 2 of the embodiment is a commercially available product, and is purchased from Liaoning Shuanghua welding and cutting equipment Co.

The movable precise cross-shaped operating arm 5 of the embodiment comprises an upright column 501, a cross beam 502, a lifting power source 503, a transmission mechanism A, a motor base 505, a transverse moving power source 506, a transmission mechanism B, a guide rail A509, a roller 510, a guide rail B515 and a sliding block 516, wherein the lifting power source 503 is arranged at the upper end of the upright column 501, and the output end of the lifting power source 503 is connected with the motor base 505 through the transmission mechanism A; the lifting power source 503 of this embodiment includes a lifting motor and a lifting reducer, wherein an input end of the lifting reducer is connected to an output shaft of the lifting motor, and an output end of the lifting reducer is connected to the transmission mechanism a. The transmission mechanism a of this embodiment is a chain and sprocket assembly 504, that is, the upper and lower ends of the column 501 are respectively rotatably provided with a sprocket, the upper and lower sprockets are connected with each other through a chain, one of the sprockets is connected with the output end of the lifting reducer, and the motor base 505 is fixedly connected to the chain; the lifting motor and the lifting speed reducer drive the motor base 505 to lift through the chain and sprocket assembly 504, and further realize the lifting freedom degree of the cross beam 502. The lifting speed reducer of this embodiment is the worm gear speed reducer among the prior art, and lifting motor passes through worm gear speed reducer speed reduction, and the rethread chain sprocket assembly 504 drives and realizes displacement from top to bottom. In this embodiment, guide rails a509 are disposed on both sides of the vertical column 501 in the height direction, and rollers 510 that are in rolling connection with the guide rails a509 are mounted on both the left and right sides of the motor base 505. The motor base 505 is provided with a transverse moving power source 506, the output end of the transverse moving power source 506 is connected with a cross beam 502 which is connected on the motor base 505 in a sliding way through a transmission mechanism B, and the cross beam 502 and the upright column 501 are vertically arranged and are in a cross shape, and have the freedom degree of lifting along with the motor base 505 and transverse front-back translation. The traverse power source 506 of this embodiment includes a traverse motor and a traverse reducer, the input end of which is connected to the output shaft of the traverse motor and the output end of which is connected to the transmission mechanism B. The transmission mechanism B of the embodiment comprises a gear 507 and a rack 508, the output end of the traversing speed reducer is connected with the gear 507, and the rack 508 is arranged on the cross beam 502 and is in meshing transmission with the gear 507; the traverse motor and the traverse reducer drive the cross beam 2 to traverse back and forth relative to the motor base 505 through the gear 507 and the rack 508, and further realize the degree of freedom of traverse of the cross beam 502. The traversing speed reducer of the embodiment is a bevel gear speed reducer in the prior art, and the traversing motor is a stepping motor in the prior art. Guide rails B515 are mounted on the upper and lower sides of the cross beam 2 on the motor base 505 of the present embodiment, and sliders 516 slidably connected to the guide rails B515 are connected to the upper and lower sides of the cross beam 502. The movement of the beam 502 is guided by a guide rail B515, is decelerated by a stepping motor through a bevel gear reducer, and is transmitted by a gear 507 and a rack 508 to realize the forward and backward displacement of the beam. The lifting power source 503, the traverse power source 506, and the manipulator power source 517 in this embodiment are connected to the master PLC system 8, respectively.

In the embodiment, a track 511 is arranged on the ground between the rotary power head box 1 and the servo precision positioner 7, and an operating machine is connected on the track 511 in a sliding manner; the manipulator of this embodiment includes manipulator power source 517, base 512, driving pulley and driven pulley, manipulator power source 517 installs on base 512, can be the driving motor; pulleys which slide on the rails 511 are arranged on two sides of the base 512, wherein the pulley on one side is connected with the output end of the power source 517 of the operating machine and is a driving pulley, and the pulley on the other side is a driven pulley; the lower end of the upright column 501 in the movable precise cross-shaped operating arm 5 is fixed on the base 512, and slides along the track 511 along with the base 512 under the driving of the power source 517 of the operating machine, so that the movable precise cross-shaped operating arm 5 can walk along the track 511, and the application range of the equipment is greatly widened; the sliding direction of the base 512 on the rail 511 is the same as the traversing direction of the beam 502, and the rail 511 is parallel to the beam 502.

In the embodiment, an argon arc welding head 4 special for inner wall surfacing of a super-small flanged connection pipe is arranged at one end of a beam 502 facing a rotary power head box 1, a welding gun B513 and a wire feeder 514 are respectively arranged at the other end of the beam 502 facing a servo precision positioner 7, and the welding gun B513 and the wire feeder 514 move along with the beam 502, so that the stability of wire feeding is ensured; and the welding gun B513 and the wire feeder 514 are respectively connected with the CMT welding system 6 to realize the welding function. The argon arc welding head 4 special for inner wall surfacing of the ultra-small flanged joint pipe comprises an electric sliding plate driving motor 401, an electric cross carriage 402, a connecting rod 403 and a welding gun A404, wherein the electric sliding plate driving motor 401 is installed at one end, facing the rotary power head box 1, of the cross beam 502, the output end of the electric sliding plate driving motor 401 is connected with the electric cross carriage 402, the connecting rod 403 is installed on the electric cross carriage 402, and the welding gun A404 is fixed on the connecting rod 403; the electric slide plate driving motor 401 and the welding gun A404 are respectively connected with the argon arc welding hot wire welding system 3 to realize the welding function. The argon arc welding head 4 special for overlaying the inner wall of the ultra-small flanged joint pipe can realize fine adjustment of up and down and left and right through the electric cross-shaped dragging plate 402, the fine adjustment stroke is 100 multiplied by 100mm, welding deviation possibly generated in the welding process can be conveniently corrected and adjusted through the control of a manual control box, and overlaying of the inner wall of a cylinder body of 80mm can be realized.

The electric cross carriage 402 of the present embodiment is a commercially available product, and is purchased from automated welding equipment, llc, wilde, guangzhou; the argon arc welding hot wire welding system 3 of the embodiment is a commercially available product and is purchased from Aotai-Teh electric company Limited in Shandong; the CMT welding system 6 of the present embodiment is a commercially available product, which is available from fornice welding technology ltd, sekkai; the servo precision positioner 7 of the embodiment is a commercially available product, and is purchased from Tonwei mechanical equipment Limited in Wuxi.

The utility model discloses a theory of operation does:

the utility model discloses utilize argon arc welding hot wire welding system 3 and CMT welding system 6 to provide welding function, adopt portable accurate cross operation arm 5 and the special argon arc welding aircraft nose 4 of super small flange takeover inner wall build-up welding to be connected the mode realize welder from top to bottom, the function of left and right sides removal, through rotatory power head case 1 and lift bearing roller 2, servo accurate machine of changing position 7 realizes the tight location of clamp of work piece, the upset is rotatory, rotatory power head case 1 and lift bearing roller 2, servo accurate machine of changing position 7, portable accurate cross operation arm 5 realizes the build-up welding of product surface and inner wall through the coordinated operation of master control PLC system 8; the main control PLC system 8 realizes parametric programming by controlling the coordination of the movable precise cross-shaped operating arm 5, the rotary power head box 1 and the servo precise positioner 7, sets matching parameters in the operating process, inputs the number of turns and the diameter of the surfacing welding, and only by determining the initial point of the surfacing welding, the intelligent system can realize automatic welding and complete the surfacing welding. The method specifically comprises the following steps:

hot wire TIG inner hole surfacing: the argon arc welding machine head 4 special for the inner wall surfacing of the ultra-small flange connecting pipe, the wire feeding machine 514 and the hot wire power supply are controlled by one key by using the argon arc welding hot wire welding system 3, the argon arc welding machine head 4 special for the inner wall surfacing of the ultra-small flange connecting pipe is perfectly combined with the movable precise cross-shaped operating arm 5 by mounting, the welding gun A404 is controlled to move up and down and left and right, a workpiece is clamped, fixed and rotated by means of the cooperation of the rotary power head box 1 and the lifting carrier roller 2, the height of the workpiece is adjusted by the lifting carrier roller 2, and finally the whole is coordinately controlled by programming of the main control PLC system 8, so that the inner wall surfacing work of the connecting pipe flange (the minimum diameter can reach 80 mm) is completed.

CMT flange automatic surfacing: by utilizing the advantages of the CMT welding system 6 in the aspect of surfacing welding and with the help of the stability of the movable precise cross-shaped operating arm 5 and the convenience of moving up, down and left and right, the whole system is coordinated through the master control PLC system 8, the movable precise cross-shaped operating arm 5 and the servo precise position changing machine 7 are coordinated in cooperation with the overturning and rotation of the servo precise position changing machine 7, and the surfacing welding of different positions of the surface and the inner wall of a workpiece is realized through the welding gun B513 of the clamping CMT welding power supply through the signal transmission of the master control PLC system 8.

The utility model discloses a portable accurate cross operating arm of sharing has practiced thrift the manufacturing cost of equipment, the utility model discloses an use the welding process who has both increased the build-up welding part and used, expanded the kind and the machining dimension scope of product, guaranteed the build-up welding quality again, improved work efficiency.

Claims

1. The utility model provides a dual-purpose equipment of hot wire TIG hole build-up welding and automatic build-up welding of CMT flange which characterized in that: the device comprises a rotary power head box (1), an argon arc welding hot wire welding system (3), an argon arc welding head (4) special for inner wall surfacing of an ultra-small flange connecting pipe, a movable precise cross operating arm (5), a CMT welding system (6), a servo precise position changing machine (7) and a master control PLC system (8), wherein the rotary power head box (1) and the servo precise position changing machine (7) are respectively arranged on the ground at the left side and the right side of the movable precise cross operating arm (5), a workpiece to be subjected to hot wire TIG inner hole surfacing is clamped on a chuck on the rotary power head box (1), the movable precise cross operating arm (5) and the servo precise position changing machine (7) are respectively connected with the master control PLC system (8), and the workpiece to be subjected to CMT welding is installed on the servo precise position changing machine (7); the movable precise cross-shaped operating arm (5) comprises an upright post (501), a cross beam (502), a lifting power source (503), a transmission mechanism A, a motor base (505), a transverse moving power source (506) and a transmission mechanism B, wherein the lifting power source (503) is installed on the upright post (501), the output end of the lifting power source is connected with the motor base (505) through the transmission mechanism A, the transverse moving power source (506) is installed on the motor base (505), the output end of the transverse moving power source (506) is connected with the cross beam (502) which is connected to the motor base (505) in a sliding mode through the transmission mechanism B, the cross beam (502) and the upright post (501) are vertically arranged, and the movable precise cross-shaped operating arm has the freedom degrees of lifting along with the motor base (505) and transverse forward and backward translation; crossbeam (502) are installed towards the one end of rotatory power head case (1) and are taken over special argon arc welding aircraft nose (4) of inner wall build-up welding to the super small flange, this special argon arc welding aircraft nose (4) of inner wall build-up welding to the super small flange with argon arc welding hot wire welding system (3) link to each other, welder B (513) and send a machine (514) are installed respectively to the other end of crossbeam (502) towards servo precision position changing machine (7), welder B (513) and send a machine (514) to link to each other with CMT welding system (6) respectively.

2. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 1, characterized in that: a track (511) is arranged on the ground between the rotary headstock (1) and the servo precise positioner (7), and the track (511) is connected with an operating machine in a sliding way; the manipulator comprises a manipulator power source (517), a base (512), a driving pulley and a driven pulley, wherein the manipulator power source (517) is installed on the base (512), pulleys which slide and walk on a track (511) are installed on two sides of the base (512), the pulley on one side is connected with the output end of the manipulator power source (517) and is the driving pulley, and the pulley on the other side is the driven pulley; and the upright column (501) in the movable precise cross operating arm (5) is fixed on the base (512).

3. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 2, characterized in that: the sliding direction of the base (512) on the track (511) is the same as the transverse moving direction of the cross beam (502), and the track (511) is parallel to the cross beam (502).

4. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 1, characterized in that: the transmission mechanism A is a chain and chain wheel assembly (504), namely, chain wheels are respectively rotatably mounted at the upper end and the lower end of the upright column (501), the upper chain wheel and the lower chain wheel are connected through a chain, one of the chain wheels is connected with the output end of the lifting power source (503), and the motor base (505) is fixedly connected to the chain; the lifting power source (503) drives the motor base (505) to lift through the chain and chain wheel assembly (504), and further the lifting freedom degree of the cross beam (502) is achieved.

5. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 1, characterized in that: stand (501) direction of height's both sides all are equipped with guide rail A (509), gyro wheel (510) with guide rail A (509) roll connection are all installed to the left and right sides of motor cabinet (505).

6. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 1, characterized in that: the transmission mechanism B comprises a gear (507) and a rack (508), the output end of the transverse moving power source (506) is connected with the gear (507), and the rack (508) is installed on the cross beam (502) and is in meshing transmission with the gear (507); the transverse moving power source (506) drives the cross beam (502) to transversely move back and forth relative to the motor base (505) through the gear (507) and the rack (508), and further transverse moving freedom degree of the cross beam (502) is achieved.

7. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 1, characterized in that: guide rails B (515) are mounted on the upper side and the lower side of the cross beam (502) on the motor base (505), and sliding blocks (516) which are connected with the guide rails B (515) in a sliding mode are connected to the upper side and the lower side of the cross beam (502).

8. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 1, characterized in that: the argon arc welding machine head (4) special for inner wall surfacing of the ultra-small flanged joint pipe comprises an electric sliding plate driving motor (401), an electric cross carriage (402), a connecting rod (403) and a welding gun A (404), wherein the electric sliding plate driving motor (401) is installed at one end, facing the rotary power head box (1), of the cross beam (502), the output end of the electric sliding plate driving motor (401) is connected with the electric cross carriage (402), the connecting rod (403) is installed on the electric cross carriage (402), and the welding gun A (404) is fixed on the connecting rod (403); and the electric slide plate driving motor (401) and the welding gun A (404) are respectively connected with the argon arc welding hot wire welding system (3).

9. The hot wire TIG (tungsten inert gas) bore surfacing and CMT (circular current technology) flange automatic surfacing dual-purpose equipment according to claim 1, characterized in that: and a lifting carrier roller (2) for preventing a workpiece from sagging is further installed on the rotary power head box (1).