CN213857685U

CN213857685U - Novel automatic gas shield overlaying welding stainless steel composite board double-layer longitudinal circular seam device

Info

Publication number: CN213857685U
Application number: CN202020580008.0U
Authority: CN
Inventors: 刘利和
Original assignee: Jianglian Heavy Industry Group Co ltd
Current assignee: Jianglian Heavy Industry Group Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-08-03
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a novel automatic gas shield overlaying welding stainless steel composite board composite layer longitudinal circular seam device, which comprises a remote controller, a circular seam welding device and a longitudinal seam welding device; the girth welding device comprises a cross and a welding mechanism; the longitudinal seam welding device comprises a welding trolley, a permanent magnet direct current speed regulator for controlling the speed of the welding trolley and a welding mechanism, wherein the permanent magnet direct current speed regulator is controlled by the remote controller; welding mechanism includes welding power supply, welding air supply, oscillator, cross slip table, welder and wire reel, controller and welding power supply, welding air supply, welder and oscillator are connected respectively, the oscillator control welder is in swing on the cross slip table, the wire reel gives welder send the silk in succession. The utility model discloses can obviously reduce welder's operation intensity of labour, improve production efficiency, shorten product manufacturing cycle, promote welding seam appearance quality.

Description

Novel automatic gas shield overlaying welding stainless steel composite board double-layer longitudinal circular seam device

Technical Field

The utility model relates to a welding technical field, concretely relates to novel automatic gas shield build-up welding stainless steel composite sheet double-layered longitudinal circumferential weld's device.

Background

In the pressure vessel industry, the stainless steel composite steel pressure vessel has the pressure bearing capacity of carbon steel and the corrosion resistance of stainless steel, expands the application range of products to a certain extent, is cheaper than the stainless steel pressure vessel in price, and saves the manufacturing cost. Therefore, the stainless steel composite steel pressure container is widely applied to the fields of chemical industry, petroleum, medical treatment, metallurgy, water conservancy, nuclear industry, food industry and the like.

Although the stainless steel clad plate pressure vessel has many advantages, the manufacturing process of the stainless steel clad plate pressure vessel is complicated, and especially the welding of the stainless steel and carbon steel transition layer directly affects the welding quality of the whole welding seam. This is because the carbon steel and stainless steel have a large difference in physical properties, chemical composition and structure, including welding properties, and are very likely to crack during welding, which affects the overall welding quality and safety in use.

Disclosure of Invention

The utility model discloses the problem that will solve is: the utility model provides a novel automatic gas shield surfacing welding stainless steel composite sheet double-deck longitudinal circumferential weld's device can obviously reduce welder operation intensity of labour, improves production efficiency, shortens product manufacturing cycle, promotes welding seam appearance quality.

The utility model discloses a solve the technical scheme that above-mentioned problem provided and do: a novel device for automatically gas-shield surfacing welding of a longitudinal circumferential seam of a clad layer of a stainless steel composite plate comprises a remote controller, a circumferential seam welding device and a longitudinal seam welding device; the girth welding device comprises a cross and a welding mechanism; the longitudinal seam welding device comprises a welding trolley, a permanent magnet direct current speed regulator which is arranged on the welding trolley and used for controlling the speed of the welding trolley, and a welding mechanism which is arranged on the welding trolley, wherein the permanent magnet direct current speed regulator is controlled by a remote controller; welding mechanism includes welding power supply, welding air supply, oscillator, cross slip table, welder and wire reel, controller and welding power supply, welding air supply, welder and oscillator are connected respectively, the oscillator control welder is in swing on the cross slip table, the wire reel gives welder send the silk in succession.

Preferably, the device further comprises a rotating mechanism; the rotating mechanism comprises a roller frame and a roller arranged on the roller frame in a rolling mode, and the roller is controlled to roll through a remote controller.

Preferably, an auxiliary power supply is arranged on the welding power supply and supplies power to the controller through an auxiliary power line.

Preferably, the welding gas source is a gas cylinder.

Compared with the prior art, the utility model has the advantages that: the utility model discloses can extensively be used for the clad steel plate equipment of requirement corrosion resistance such as pressure vessel, high temperature resistance and good toughness, utilize equipment such as carbon dioxide gas shielded welding machine and welding dolly cooperation oscillator automatic build-up welding clad steel plate multiple layer to indulge the girth weld, obviously reduce welder's operation intensity of labour, improve production efficiency, shorten product manufacturing cycle, promote welding seam appearance quality, promoted application and development of stainless steel build-up welding technique on the pressure vessel product, extremely wide application development prospect has.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.

FIG. 1 is a schematic structural diagram of the present invention when welding the circumferential seams of the composite board cylinder;

FIG. 2 is a front view of the present invention when welding the longitudinal seam of the composite board cylinder;

the attached drawings are marked as follows: 1. the composite plate cylinder body base layer 2, the composite plate cylinder body clad layer 3, the welding wire disc 4, the controller 5, the combined cable 6, the cross sliding table 7, the oscillator 8, the welding trolley 9, the welding gun 10, the roller frame 11, the auxiliary power line 12, the control line 13, the welding cable 14, the welding power supply 15, the gas cylinder 16, the cross frame 17, the gas pipe 18, the composite plate cylinder body circumferential weld, 19 and the permanent magnet direct current speed regulator.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

The specific embodiment of the utility model is shown in fig. 1-2, a novel device for automatically gas-shield surfacing welding of a longitudinal circumferential seam of a stainless steel composite plate composite layer comprises a remote controller, a circumferential seam welding device and a longitudinal seam welding device; the girth welding device comprises a cross 16 and a welding mechanism; the longitudinal seam welding device comprises a welding trolley 8, a permanent magnet direct current speed regulator 19 for controlling the speed of the welding trolley and a welding mechanism, wherein the permanent magnet direct current speed regulator 19 is controlled by the remote controller; welding mechanism includes welding power supply 14, welding air supply, wiggler 7, cross slip table 6, welder 9 and wire reel 3, controller 4 and welding power supply 14, welding air supply, welder 9 and wiggler 7 are connected respectively, wiggler 7 control welder 9 is in swing on the cross slip table 6, wire reel 3 gives welder 9 send the silk in succession.

The oscillator can set continuous left-right oscillation amplitude and speed according to requirements, so that the left-right oscillation amplitude and speed of the welding gun of the carbon dioxide gas shielded welding machine in the direction perpendicular to a welding seam are controlled; the permanent magnet direct current speed regulator can regulate the traveling speed of the welding trolley according to the requirement, so that the traveling speed of a welding gun of the carbon dioxide gas shielded welding machine along the direction of a welding seam is controlled; the cross sliding table can greatly adjust the position of the welding gun up and down, left and right, thereby controlling the ascending and descending of the welding gun of the carbon dioxide gas shielded welding machine and the position of a welding bead.

As another embodiment of the present invention, the device further comprises a rotating mechanism; the rotating mechanism comprises a roller frame 10 and a roller arranged on the roller frame 10 in a rolling mode, and the roller is controlled to roll through a remote controller.

As another embodiment of the present invention, an auxiliary power source is provided on the welding power source 14, and the auxiliary power source supplies power to the controller 4 through an auxiliary power line 11.

As another embodiment of the present invention, the welding gas source is a gas cylinder 15.

In fig. 1, the composite plate cylinder is made of Q345R + S31603(34+4mm), and after the circumferential weld of the base layer of the composite plate cylinder is fully welded, the circumferential weld of the base layer is preheated at a temperature not lower than 80 ℃. Preparing all the devices shown in the figure 1, and adjusting the welding current to be 160-170A, the welding voltage to be 25V, the swing amplitude to be 25mm, the swing speed to be 40mm/s and the gas flow to be 15-18L/min. And taking a transition layer welding wire E309LMoT1-1 and a surface layer welding wire E316LT1-1, wherein the diameter of the welding wires is phi 1.2 mm. And then adjusting an automatic gas shield welding gun to the slope surface at one side of the barrel circumferential seam clad layer, starting the welding gun to start arc, overlaying the transition layer by using E309LMoT1-1, controlling the roller frame to rotate by using a remote controller to drive the composite plate barrel to rotate, wherein the rotation linear speed of the composite plate barrel is 12 cm/min. In the welding process, an operator adjusts related parameters according to actual conditions to ensure that the surfacing thickness of the transition layer is 3-4 mm. After welding one pass, the lap joint quantity of the second welding seam and the first welding seam is ensured to be 4-5 mm. And pressing one step by one step until the whole transition layer groove is fully piled. After the transition layer welding seam is cooled, 100% PT detection is carried out, the first-level is qualified, the E316LT1-1 welding wire is used for surfacing the surface layer, and the thickness of the surface layer is 3-4 mm.

In fig. 2, the composite board cylinder is made of Q345R + S31603(34+4mm), and after the longitudinal seam of the composite board cylinder is fully welded, the longitudinal seam of the base layer is preheated at a temperature not lower than 80 ℃. Preparing all the devices shown in the figure 2, and adjusting the welding current to be 160-170A, the welding voltage to be 25V, the swing amplitude to be 25mm, the swing speed to be 40mm/s and the gas flow to be 15-18L/min. And taking a transition layer welding wire E309LMoT1-1 and a surface layer welding wire E316LT1-1, wherein the diameter of the welding wires is phi 1.2. And then moving the welding trolley to the end part of the composite plate barrel, adjusting the welding gun to the slope surface at one side of the longitudinal seam compound layer of the barrel, starting the welding gun to start the arc welding, overlaying the transition layer by using E309LMoT1-1, and controlling the welding trolley to travel by using a remote controller, wherein the traveling speed of the welding trolley is 12 cm/min. In the welding process, an operator adjusts related parameters according to actual conditions to ensure that the surfacing thickness of the transition layer is 3-4 mm. After welding one pass, the lap joint quantity of the second welding seam and the first welding seam is ensured to be 4-5 mm. And pressing one step by one step until the whole transition layer groove is fully piled. After the welding seam of the transition layer is cooled, 100% PT detection is carried out, the first-level welding seam is qualified, the E316LT1-1 welding wire is used for surfacing the surface layer, the thickness of the surface layer is 3-4 mm, and the thickness of the surfacing layer is enabled to be larger than or equal to 6 mm.

The utility model discloses it is qualified with the process test to utilize automatic gas shield welding equipment to press NB/T47014-2011 "pressure-bearing equipment welding process evaluation". 1. The evaluation parameters of the gas shielded welding process are strictly controlled after a plurality of tests, and the requirements of the following table are met. Wherein, welding current, voltage, welding speed, swing amplitude, weld bead lapping amount and interlayer temperature are important factors influencing the success of welding evaluation; 2. The process test is qualified. Because the gas shield welding depth is small, in order to prevent the poor fusion of the welding overlay and the composite layer and the easy cracking phenomenon, two composite plate samples with bevel angles of 15 degrees and 45 degrees are specially processed for macroscopic crystal phase and side bending tests. Test results show that the 45-degree groove of the composite plate composite layer can ensure that the welding layer and the composite layer are well fused at the joint and are not easy to crack.

The foregoing is illustrative of the preferred embodiments of the present invention only, and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed. All changes which come within the scope of the independent claims of the invention are to be embraced within their scope.

Claims

1. The utility model provides a novel automatic gas shield surfacing welding stainless steel composite sheet multilayer longitudinal circumferential weld's device which characterized in that: the remote controller is connected with the longitudinal seam welding device; the girth welding device comprises a cross (16) and a welding mechanism, wherein the welding mechanism is arranged on the cross; the longitudinal seam welding device comprises a welding trolley (8), a permanent magnet direct current speed regulator (19) arranged on the welding trolley (8) and used for controlling the speed of the welding trolley, and a welding mechanism arranged on the welding trolley (8), wherein the permanent magnet direct current speed regulator (19) is controlled by a remote controller; welding mechanism includes welding power supply (14), welding air supply, oscillator (7), cross slip table (6), welder (9), controller (4) and wire reel (3), controller (4) and welding power supply (14), welding air supply, welder (9) and oscillator (7) are connected respectively, oscillator (7) control welder (9) are in swing on cross slip table (6), wire reel (3) are given welder (9) send a silk in succession.

2. The novel device for automatically gas-shield surfacing welding of the clad longitudinal circumferential seam of the stainless steel composite plate according to claim 1 is characterized in that: the welding mechanism further comprises a rotating mechanism; the rotating mechanism comprises a roller frame (10) and rollers arranged on the roller frame (10) in a rolling mode, and the rollers are controlled to roll through a remote controller.

3. The novel device for automatically gas-shield surfacing welding of the clad longitudinal circumferential seam of the stainless steel composite plate according to claim 1 is characterized in that: an auxiliary power supply is arranged on the welding power supply (14), and the auxiliary power supply supplies power to the controller (4) through an auxiliary power line (11).

4. The novel device for automatically gas-shield surfacing welding of the clad longitudinal circumferential seam of the stainless steel composite plate according to claim 1 is characterized in that: the welding gas source is a gas cylinder (15).