CN101508049B - Automatic building-up technique and device of shell copper alloy conduction band TIG - Google Patents

Automatic building-up technique and device of shell copper alloy conduction band TIG Download PDF

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Publication number
CN101508049B
CN101508049B CN200910071635XA CN200910071635A CN101508049B CN 101508049 B CN101508049 B CN 101508049B CN 200910071635X A CN200910071635X A CN 200910071635XA CN 200910071635 A CN200910071635 A CN 200910071635A CN 101508049 B CN101508049 B CN 101508049B
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China
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welding
motion
connects
shell
heated filament
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CN200910071635XA
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Chinese (zh)
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CN101508049A (en
Inventor
吕世雄
黄永宪
杨士勤
陈基明
杨涛
曲杰
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哈尔滨工业大学
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Publication of CN101508049A publication Critical patent/CN101508049A/en
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Publication of CN101508049B publication Critical patent/CN101508049B/en

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Abstract

The invention aims to provide a shell copper alloy conduction band TIG automatic overlaying process and a device thereof, which can ensure good-quality rotating band welding process, adopt a double wire feed system of a hot wire and a cold wire to improve welding efficiency and reduce dilution factor of overlaying layers, and adopt a PLC control system. The device consists of a welding system, a welding system movement adjusting mechanism and a shell body movement mechanism, wherein the welding system is connected with the welding system movement adjusting mechanism which is connected with the shell body movement mechanism. The invention simplifies processing technology, reduces production cost, manufacturing procedures of the conventional process, production time and workload, improves productivity, reduces material consumption, saves cost and improves connecting reliability; the welding process has good repeatability so as to easily realize automatic production; and the optimized design of a shell body structure simplifies the structure of a powder chamber, and contributes to solving the problems of poor strength of a band trough and small safety margin.

Description

Shell copper alloy conduction band TIG automatic surfacing technology and device

(1) technical field

The present invention relates to solder technology, is exactly shell copper alloy conduction band TIG automatic surfacing technology and device specifically.

(2) background technology

Steel matrix surface heap applies conduction, heat conductivility and the case hardness that copper alloy layer can improve steel, and this technology is widely used in aerospace field and weapons manufacture field.The for example assembling of shell bearing band; Traditional handicraft adopts mechanical system chimeric copper alloy ring on steel matrix, and this mode has increased stress to be concentrated, and has weakened body intensity; The wall thickness at annular groove place can make this body endoporus aperture, place dwindle; Thereby increased the technology difficulty of processing body, reduced explosive payload, reduced brisance.Simultaneously, processing annular groove when taking a lot of work, cutter increase production cost on body.

The development trend of world today's shell is heavy caliber, thin wall, multiple warhead, a bullet multipotency, the developing intellectual resource shell of playing.The key technology that improves bullet fighting capacity is the bearing band mounting technology, is the technical bottleneck that puzzlement China shell manufactures and designs for many years always, adopts the bearing band of mechanical chimeric mode to assemble the development trend that can not adapt to following shell.

Carry out the remarkable advantage of bearing band assembling in view of adopting welding procedure; The bearing band solder technology has been launched extensive studies both at home and abroad; The welding method that relates to comprises that diffusion welding (DW) bearing band coupling technique, Laser Welding technology, flame spray welding are technological, electron beam axis is to solder technology etc.; These methods all have certain degree of difficulty and limitation, are not applied in the actual production.Since built-up welding be with matrix as an electrode, and arc heated temperature and heat are inhomogeneous, and matrix very easily melts.Conventional built-up welding dilution rate even if strip surfacing also has sizable dilution rate, is oozed technological difficulties and the key factor that influences welding performance that iron has become bead-welding technology often greater than 10%.Because iron and copper alloy have bigger physical property difference, when excessive iron gets into copper alloy layer, can in copper alloy layer, cause great stress to concentrate and serious infiltration crack defect.Simultaneously, excessive iron also can make the hardness of copper alloy layer sharply raise, and makes the friction and wear behavior of copper alloy layer take place greatly to change.In Aero-Space and the manufacturing product manufacturing of weapons, often require extremely low dilution rate even require zero dilution rate promptly not have fusion penetration.And manual electric arc pile up welding technology is adopted in domestic built-up welding at present mostly, and not only welding efficiency is low, and poor welding quality, overlay cladding dilution rate are low.Thereby the welding procedure and the corresponding shell automatic soldering device of research high-quality, high efficiency, ultra-thin fusion penetration to improving the development of shell production efficiency and China's national defense cause, have important significance for theories and practical significance.

(3) summary of the invention

The object of the present invention is to provide a kind of bearing band welding procedure, employing heated filament, cold silk mariages wire feed system, the dilution rate that improves welding efficiency, reduction overlay cladding, employing PLC of high-quality of can guaranteeing to control the shell copper alloy conduction band TIG automatic surfacing technology and the device of system.

The objective of the invention is to realize like this: it is made up of welding system 21, welding system motion governor motion 22 and body motion 23; Welding system 21 connects welding system motion governor motion 22, and welding system motion governor motion 22 connects body motion 23.

Shell copper alloy conduction band TIG automatic surfacing device of the present invention also has following technical characterictic:

(1) described welding system 21 comprises that cold silk wire-feed motor 1, heated filament wire-feed motor 2, heater supply 3, the TIG built-up welding source of welding current 4, welding gun 5, cold silk wire feeding mouth 6, heated filament wire feeding mouth 7, body back water drench pipe 8 and water tank 9; Cold silk wire-feed motor 1 connects heated filament wire-feed motor 2; Heated filament wire-feed motor 2 connects heater supply 3; The TIG built-up welding source of welding current 4 is arranged on the right side of device; Welding gun 5 connects cold silk wire feeding mouth 6 and heated filament wire feeding mouth 7, and body back water drenches the below that pipe 8 is arranged on cold silk wire feeding mouth 6 and heated filament wire feeding mouth 7, and water tank 9 is arranged on the right side of the TIG built-up welding source of welding current 4.

(2) described welding system motion governor motion 22 is made up of welding head lengthwise movement drive motors 10, welding head centering adjusting knob 11, welding head lengthwise movement system 12, welding head teeter system 13 and welding head teeter drive motors 14; Welding head lengthwise movement drive motors 10 connects welding head centering adjusting knob 11 and welding head lengthwise movement system 12, and welding head teeter system 13 connects welding head teeter drive motors 14.

(3) described body motion 23 comprises pneumatic cylinder 15, holds out against seat 16, carriage 17 and body rotate and drive 18, and pneumatic cylinder 15 connects and holds out against seat 16, and carriage 17 is arranged on the device middle part, and body rotates and drives 18 and be arranged on carriage 17 left sides.

A kind of shell copper alloy conduction band TIG of the present invention automatic surfacing technology, welding procedure is following:

Step 1: through the man-machine control of PLC interface, control welding head and welding work pieces motion are after the relative position of centering welding gun and workpiece; Preset welding current, missile rotation speed and rotary mode through PLC; At the uniform velocity with two kinds of patterns of stepping, body adopts the uniform rotation pattern during the narrower bearing band of built-up welding, adopts the stepping rotation mode during built-up welding bearing band broad; Cold silk, heated filament wire feed rate, welding head amplitude of fluctuation and speed, put forward parameters such as arc time and electric current, but Real Time Observation and adjusting;

Step 2: logical cooling water before welding arc ignites, cooling welding tool and body; Welding gun moves into place, the heated filament electric arc that ignites, welding main arc, and heated filament, cold silk are sent to simultaneously;

Step 3: after the built-up welding starting the arc, adopt little electric current, low wire feed rate built-up welding 5-10mm; Then adopt wire feed rate and the welding current that satisfies the requirement of bearing band forming dimension; During the thoughtful built-up welding original position of built-up welding one, promote the electric arc height, reduce speed of welding simultaneously, promote welding current, accomplish the bearing band overlap joint of section start 5-10mm length, overlap joint is accomplished the after-current decay, arc extinction, and wire feed stops, and accomplishes the welding of a bearing band;

Step 4: welding is closed the source of welding current after finishing; Move down workpiece by blanking device after stopping the supple of gas or steam, cutting off the water, feed mechanism is fixed next shell body simultaneously, carries out the weld deposit process of next bearing band.

Simplified processing process of the present invention reduces production costs, and has reduced the manufacturing procedure of traditional handicraft, reduces production time and workload, has improved productivity ratio, reduces material consumption, saves cost.Improve connection reliability, the welding procedure good reproducibility, easily be automated production.Optimize the body structure design, simplified the coyote hole structure, help solving trough of belt intensity difference, problem that margin of safety is little.Shell copper alloy conduction band TIG automatic surfacing technology of the present invention and device; Be a kind of efficient, automatically, the shell conduction band welder of low dilution rate; The bearing band welding procedure of high-quality can be provided, adopt heated filament, cold silk mariages wire feed system, improve the dilution rate of welding efficiency, reduction overlay cladding; Adopt PLC control system simultaneously; The accurately strictness of control welding process parameter and tool locating, especially welding current waveform, wire feed rate control has guaranteed the particularly appearance of weld attractive in appearance of lap-joint of built-up welding bearing band layer.

(4) description of drawings

Fig. 1 is apparatus of the present invention overall structure sketch map;

Fig. 2 is a heated filament systematic schematic diagram of the present invention;

Fig. 3 is the body automatic surfacing PLC of system control system block diagram of the present invention;

Fig. 4 is that welding current and body rotate, the wire feed rate curve;

Fig. 5 is a bearing band automatic surfacing flow chart.

(5) specific embodiment

For example the present invention is described further below in conjunction with accompanying drawing.

Embodiment 1; In conjunction with Fig. 1; Shell copper alloy conduction band TIG automatic surfacing device of the present invention; It is made up of welding system (21), welding system motion governor motion (22) and body motion (23), and welding system (21) connects welding system motion governor motion (22), and welding system motion governor motion (22) connects body motion (23).

Described welding system (21) comprises that cold silk wire-feed motor (1), heated filament wire-feed motor (2), heater supply (3), the TIG built-up welding source of welding current (4), welding gun (5), cold silk wire feeding mouth (6), heated filament wire feeding mouth (7), body back water drench pipe (8) and water tank (9); Cold silk wire-feed motor (1) connects heated filament wire-feed motor (2); Heated filament wire-feed motor (2) connects heater supply (3); The TIG built-up welding source of welding current (4) is arranged on the right side of device; Welding gun (5) connects cold silk wire feeding mouth (6) and heated filament wire feeding mouth (7), and body back water drenches the below that pipe (8) is arranged on cold silk wire feeding mouth (6) and heated filament wire feeding mouth (7), and water tank (9) is arranged on the right side of the TIG built-up welding source of welding current (4).

Described welding system motion governor motion (22) is made up of welding head lengthwise movement drive motors (10), welding head centering adjusting knob (11), welding head lengthwise movement system (12), welding head teeter system (13) and welding head teeter drive motors (14); Welding head lengthwise movement drive motors (10) connects welding head centering adjusting knob (11) and welding head lengthwise movement system (12), and welding head teeter system (13) connects welding head teeter drive motors (14).

Described body motion (23) comprises pneumatic cylinder (15), hold out against seat (16), carriage (17) and body rotates and drives (18), and pneumatic cylinder (15) connects and holds out against seat (16), and carriage (17) is arranged on the device middle part, and body rotates and drives (18) and be arranged on the left of the carriage (17).

Among Fig. 1, (19) are control panel, and (20) are the built-up welding body.

Embodiment 2, in conjunction with Fig. 1, and Fig. 2, shell copper alloy conduction band TIG automatic surfacing technology of the present invention, welding procedure is following:

Step 1: through the man-machine control of PLC interface, control welding head and welding work pieces motion are after the relative position of centering welding gun and workpiece; Preset welding current, missile rotation speed and rotary mode through PLC; At the uniform velocity with two kinds of patterns of stepping, body adopts the uniform rotation pattern during the narrower bearing band of built-up welding, adopts the stepping rotation mode during built-up welding bearing band broad; Cold silk, heated filament wire feed rate, welding head amplitude of fluctuation and speed, put forward parameters such as arc time and electric current, but Real Time Observation and adjusting;

Step 2: logical cooling water before welding arc ignites, cooling welding tool and body; Welding gun moves into place, the heated filament electric arc that ignites, welding main arc, and heated filament, cold silk are sent to simultaneously;

Step 3: after the built-up welding starting the arc, adopt little electric current, low wire feed rate built-up welding 5-10mm; Then adopt wire feed rate and the welding current that satisfies the requirement of bearing band forming dimension; During the thoughtful built-up welding original position of built-up welding one, promote the electric arc height, reduce speed of welding simultaneously, promote welding current, accomplish the bearing band overlap joint of section start 5-10mm length, overlap joint is accomplished the after-current decay, arc extinction, and wire feed stops, and accomplishes the welding of a bearing band;

Step 4: welding is closed the source of welding current after finishing, and workpiece is moved down by blanking device in the back of stopping the supple of gas or steam, cut off the water, and feed mechanism is fixed next shell body simultaneously, carries out the weld deposit process of next bearing band.

Embodiment 3; In conjunction with Fig. 1; Shell copper alloy conduction band TIG automatic surfacing device of the present invention has automatic charging and clamping mechanism, and welding head can be swung by bearing band width on request automatically; Welding head can be realized the freely-movable of X-Y two-dimensional directional, can realize the adjusting realization welding gun of Z direction and the centering of built-up welding body simultaneously; Body can carry out at the uniform velocity rotating two kinds of rotation modes with stepping under the effect of missile rotation drive system, and wherein at the uniform velocity rotation is suitable for narrower bearing band welding, and stepping is rotated and is suitable for the welding of broad bearing band.All welding parameters all can be preestablished also by control panel can weld real-time control and adjusting.The workpiece motion s mode is: through hold out against seat, the carriage pneumatic means fixedly treats the built-up welding body, welding head can carry out the two-dimentional freely-movable of X-Y direction along the leading screw that moves through motor-driven; Also can, the centering adjusting knob carry out Z direction centering adjustment movement under regulating simultaneously; The built-up welding body can carry out at the uniform velocity rotating with stepping under motor-driven, accomplishes the welding of circumference bearing band; In the welding process, can control the width of built-up welding bearing band through the horizontal amplitude of oscillation of welding head; Adopt the independent wire feeder of two covers, control the feed rate of cold silk and heated filament respectively.

Shell copper alloy conduction band TIG automatic surfacing device of the present invention adopts cold silk, heated filament mariages wire feed system, improves built-up welding efficient and bearing band attractive in appearance and is shaped; Adopt body back water-cooling system, reduce the diffusion of Fe element in the surfacing of Cu alloy-layer in the steel matrix, reduce the thin distortion that plays the wall matrix simultaneously; Employing PLC is a master controller, and each carries out the functions such as detection of control, welding parameter control and the position signalling and the welding parameter of action to accomplish welding process.For automation that guarantees the bearing band weld deposit process and the shaping of controlling bearing band, after the built-up welding starting the arc, adopt little electric current, low wire feed rate built-up welding 5-10mm; Then adopt wire feed rate and the welding current that satisfies the requirement of bearing band forming dimension; During the thoughtful built-up welding original position of built-up welding one, promote the electric arc height, reduce speed of welding simultaneously; Promote welding current, accomplish the bearing band overlap joint of initial section start 5-10mm length, overlap joint is accomplished the after-current decay; Arc extinction, wire feed stops, and accomplishes the welding of a bearing band.

Embodiment 4, and in conjunction with Fig. 4, Fig. 5, shell copper alloy conduction band TIG automatic surfacing technology of the present invention and device have following technical characterictic:

The independent wire feeder of employing two covers, the cold silk that melts unlike material simultaneously is shaped and performance with heated filament, raising welding efficiency, optimization bearing band; Adopt the back water-cooling pattern, reduce body fusing amount and reach dilution rate overlay cladding;

Adopt two main drive motors, drive the automatic rotation of body in automatic swing of welding gun and the welding process respectively; Shell copper alloy conduction band TIG automatic surfacing device of the present invention comprises the two cover sources of welding current, is respectively applied for preheating wire welding and filler wire and accomplishes weld deposit process; Adopt automatic charging, cutting agency, realize the pipeline system automated production; Through protection screen and console, can realize real-time monitoring and control to welding process;

Welding fixing with setting mobile, welding parameter of mobile device and welding work pieces in the employing PLC control system control whole welding process controls with real-time;

Adopt variable-current shown in Figure 4, variation body rotating speed and alternate wire-feed speed to guarantee the shaping of bearing band lap-joint, the welding process figure of whole bearing band is as shown in Figure 5.

Claims (1)

1. shell copper alloy conduction band TIG automatic surfacing device; It is made up of welding system (21), welding system motion governor motion (22) and body motion (23); It is characterized in that: welding system (21) connects welding system motion governor motion (22), and welding system motion governor motion (22) connects body motion (23); Described welding system (21) comprises that cold silk wire-feed motor (1), heated filament wire-feed motor (2), heater supply (3), the TIG built-up welding source of welding current (4), welding gun (5), cold silk wire feeding mouth (6), heated filament wire feeding mouth (7), body back water drench pipe (8) and water tank (9); Cold silk wire-feed motor (1) connects heated filament wire-feed motor (2); Heated filament wire-feed motor (2) connects heater supply (3); The TIG built-up welding source of welding current (4) is arranged on the right side of device; Welding gun (5) connects cold silk wire feeding mouth (6) and heated filament wire feeding mouth (7), and body back water drenches the below that pipe (8) is arranged on cold silk wire feeding mouth (6) and heated filament wire feeding mouth (7), and water tank (9) is arranged on the right side of the TIG built-up welding source of welding current (4); Described welding system motion governor motion (22) is made up of welding head lengthwise movement drive motors (10), welding head centering adjusting knob (11), welding head lengthwise movement system (12), welding head teeter system (13) and welding head teeter drive motors (14); Welding head lengthwise movement drive motors (10) connects welding head centering adjusting knob (11) and welding head lengthwise movement system (12), and welding head teeter system (13) connects welding head teeter drive motors (14); Described body motion (23) comprises pneumatic cylinder (15), hold out against seat (16), carriage (17) and body rotates and drives (18), and pneumatic cylinder (15) connects and holds out against seat (16), and carriage (17) is arranged on the device middle part, and body rotates and drives (18) and be arranged on the left of the carriage (17).
CN200910071635XA 2009-03-26 2009-03-26 Automatic building-up technique and device of shell copper alloy conduction band TIG CN101508049B (en)

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CN 201110044345 Division CN102133673B (en) 2009-03-26 2009-03-26 TIG (Tungsten Inert Gas) automatic surfacing method for projectile copper alloy conduction band

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