CN104908761A - Sidewall plate of railway hopper wagon made by aluminum alloy and friction-stir welding method thereof - Google Patents
Sidewall plate of railway hopper wagon made by aluminum alloy and friction-stir welding method thereof Download PDFInfo
- Publication number
- CN104908761A CN104908761A CN201510376202.0A CN201510376202A CN104908761A CN 104908761 A CN104908761 A CN 104908761A CN 201510376202 A CN201510376202 A CN 201510376202A CN 104908761 A CN104908761 A CN 104908761A
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- section bar
- aluminum alloy
- weld
- welding
- side wallboard
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D7/00—Hopper cars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/041—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures with bodies characterised by use of light metal, e.g. aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/08—Sides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Transportation (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
Provided is a sidewall plate of a railway hopper wagon made by aluminum alloy and a friction-stir welding method thereof. The sidewall plate is integrally formed by splicing of aluminum alloy sections. According to the shape and the requirement for the sidewall plate of a wagon body, different aluminum alloy sections are adopted and welded together by friction-stir welding in order to form the overall sidewall plate made by aluminum alloy.The friction-stir welding is realized by arraying the aluminum alloy sections forming the sidewall plate of the railway hopper wagon according to the sequence. All the aluminum alloy sections are welded for connection by means of friction stir welding. Therefore, the overall sidewall plate of the railway hopper wagon is formed.The aluminum alloy sections are adopted for forming the wall plate featuring a stable structure, high strength and attractive external appearance. Compared with the mode that plates are utilized for being riveted onto a framework, the overall strength is improved a lot; and the appearance looks attractive.
Description
Technical field
The present invention relates to parts of a kind of goods train vehicle and preparation method thereof, be specifically related to a kind of railway truck framed side wallboard and welding manner thereof, particularly utilize friction stir welding to make method and the product of railway truck framed side wallboard, belong to railway truck manufacturing technology field.
background technology:
Railway freight traffic is the important component part of railway transportation, and railway is referred to as railway truck for the vehicle of carrying goods.Different by its purposes, general purpose freight car and special purpose freight car can be divided into.Main Types has box car, open-top car, tank car, flat truck and hopper car etc.Recently in order to improve transport power, propose and adopt aluminum alloy materials to make railway truck, wherein aluminum alloy railway hopper car is exactly wherein a kind of, but present hopper car is all the tower structure adopted, namely on bogie truck, place the car body of a general frame, these car bodies are all to be got up formation vehicle body frame by different profile material assemblings, then steel plate or aluminium alloy plate are fixed on the car body of framework by riveted joint.Adopt the railway truck that such method railway truck is made, although have employed the weight that aluminum alloy materials can alleviate car body, but the structure of entirety is very complicated, difficulty of construction is large, and appearance due to framework be all emerging in outside, so be not seem very clean and tidy, necessary this to be improved.
Do not find that there is the patent literature constructed with the present invention by patent retrieval, to have the patent of certain relation to mainly contain following with the present invention:
1, the patent No. is CN201410373006, name is called the patent of invention of " wagon body of hopper wagon for railroad transportation bottom side rail ", which disclose a kind of wagon body of hopper wagon for railroad transportation bottom side rail, it is made up of whole hollow extruded aluminum alloy profile, this hollow extruded aluminum alloy profile has outer arc face, inner side ramp and inner side under vertical plane, outer arc face, under inner side ramp and inner side, in the special-shaped cavity that encloses of vertical plane, the oblique reinforced rib and the cross reinforcing that are divided into three separate chamber are set, top, outer arc face is upwards extended with the variable section slope be integrated with ramp top, inner side, the top that variable section slope and inner side ramp cross be provided with vertically arranged on be connected aerofoil, aerofoil is connected under the bottom that outer arc face and vertical plane under inner side cross is provided with.
2, the patent No. is CN201310752438, name is called the patent of invention of " sidewall structure of hopper car ", which disclose a kind of sidewall structure of hopper car, comprising: there is the top chord (1) of global formation, integrated lateral wallboard (2), the bottom side rail (3) of global formation and lower side wall (4); Described top chord (1) is riveted with the described integrated lateral wallboard (2) of below; Described framed side wallboard (2) is riveted with the bottom side rail (3) of the described global formation of below; Described framed side wallboard is the plate-column structure of wallboard and lateral column integral type, and described lateral column is arranged on body inner side; Described bottom side rail (3) is riveted with the described lower side wall (4) of below.
3, the patent No. is CN201320841576, name is called the utility model patent of " Railway Coal hopper car bottom side rail connection structure ", which disclose a kind of Railway Coal hopper car bottom side rail connection structure, its curb girder has the hollow beam body of cavity structure, the medial surface upper section slants outward of hollow beam body is formed with slope, the top of slope has upwards extended to form normal limb, is formed and makes a concession step for installing side wall between the lateral surface of normal limb and hollow beam body; The medial surface of its lower side wall and hollow beam body is riveted, its many lateral column perpendicular separations are arranged and rivet with the lateral surface of hollow beam body, on it, side wall to be inserted between the normal limb of hollow beam body and many lateral columns and three rivets and is integrated, and its underframe curb girder is positioned at one end of hollow beam body and also rivets with the medial surface of hollow beam body.
So although these patents above-mentioned all relate to railway hopper car, also be proposed and adopt aluminum alloy to carry out some improvement to structure, but all fundamentally do not change existing employing general frame, mode and the structure of aluminium alloy plate is riveted again above, therefore the integral structure of existing aluminum alloy hopper car makes complicated, the inaesthetic problem of profile still exists, and still needs to be improved further.
Summary of the invention
The object of the invention is to for the complex structure existing for existing railway aluminum alloy hopper car, manufacture difficulty is large, the inaesthetic deficiency of profile, a kind of new railway aluminum alloy hopper car framed side wallboard and preparation method thereof is proposed, it is simple that this railway aluminum alloy hopper car framed side wallboard has structure, simple for production, the feature of good looking appearance.
In order to reach this purpose, the invention provides a kind of railway aluminum alloy hopper car framed side wallboard, framed side wallboard entirety is spliced to form by aluminium alloy extrusions; According to shape and the requirement of car body side wallboard, adopt different aluminum alloys section bar, by friction stir welding, aluminium alloy extrusions is welded to each other, form monoblock aluminum alloy side wallboard.
Further, described aluminium alloy extrusions comprises 3 kinds of section bars, wherein, in-line section bar 16, word Intermediate Gray " people " font rib section bar 4, with triangle rib section bar 5 in the middle of one word, with boss type material 4 in the middle of one word, amount to 29, above-mentioned section bar is lined up in order, welded by friction stir welding, form monoblock aluminum alloy side wallboard and form monoblock aluminum alloy side wallboard formation monoblock aluminum alloy side wallboard.
Further, described aluminium alloy extrusions is according to the arrangement of both sides symmetric offset spread mode order, monolateral putting in order from edge to centre is 2 blocks of in-line section bars, with boss type material in the middle of 1 piece of one word, 1 block of in-line section bar, with boss type material in the middle of 1 piece of one word, 1 block of in-line section bar, with triangle rib section bar in the middle of 1 piece of one word, 1 block of in-line section bar, 1 piece of one word Intermediate Gray " people " font rib section bar, 1 block of in-line section bar, with triangle rib section bar in the middle of 1 piece of one word, 1 block of in-line section bar, 1 piece of one word Intermediate Gray " people " font rib section bar, 1 block of in-line section bar, center of symmetry is middle is with triangle rib section bar in the middle of 1 piece of one word, add up and amount to 29 pieces in both sides.
Further, between described various aluminium alloy extrusions and section bar, take friction stir welding to weld, form unitary side wallboard.
A kind of friction stir welding method realizing above-mentioned railway aluminum alloy hopper car framed side wallboard, the aluminium alloy extrusions of composition railway aluminum alloy hopper car framed side wallboard is lined up in order, and by friction stir welding, each aluminium alloy extrusions is welded together each other, form the railway aluminum alloy hopper car framed side wallboard of monoblock.
Further, described Friction stir welding process is:
1) section bar inspection;
2) welds prepares;
3) section bar assembling;
4) agitating friction welding;
5) postwelding deflashing;
6) back of weld polishing;
7) final check.
Further, described section bar inspection is that side wall is inspected by random samples section bar by inspection procedure before carrying out agitating friction welding, inspect rear preparation section bar 29 by random samples, comprise word Intermediate Gray " people " font rib section bar 4, in-line section bar 16, with triangle rib section bar 5 in the middle of one word, with boss type material 4 in the middle of one word, with motor wire brush, mechanical grinding is carried out to welding region, require to remove surface film oxide, after polishing terminates, with alcohol or acetone wiping region to be welded upper and lower surface and interface.
Further, described welds prepares is with miking welding region thickness, requires that every 500mm measures a point, and is marked on section bar with marking pen by observed reading; After measurement terminates, to between in-line section bar and in-line section bar totally 2 groups, between in-line section bar and in-line Intermediate Gray triangle rib section bar totally 4 groups, between in-line section bar and in-line Intermediate Gray chevron pointing rib section bar totally 4 groups, between in-line section bar and in-line Intermediate Gray boss rib section bar totally 4 groups select with to be assembled, check before assembling that composition backing is with or without foreign matters such as pit and aluminium bits, and composition backing is cleared up.
Further, in-line section bar 2 (weld seam 001) is first selected in described section bar assembling, loads in welding gear frock, compresses upper surface, require backing plate and section bar welding region sturdy, side holds out against, assembly clearance≤0.4mm, unfitness of butt joint≤0.4mm; After having assembled, select stirring-head, wherein prewelding stirring-head specification is: shaft shoulder Φ 8mm, donut; The long 1mm of pin; Taper, threaded; Formal welding stirring-head specification is: pin long T-0.3mm≤L≤T-0.2mm, the shaft shoulder: Φ 20mm; Shaft shoulder form: evagination helix line; Mixing needle form specification is: taper, threaded, three tangent plane mixing needles.
Further, described agitating friction welding is the welding procedure of editor's weld seam 001, and simulates, and require alignment deviation≤0.4mm, wall scroll weld seam starting and ending end does not weld length≤10mm; Prewelding parameter: rotating speed 1400rpm, welds fast 1000mm/min, formally welds parameter: rotating speed 1400rpm, weld fast 1000mm/min, adopts prewelding stirring-head and formal weldering stirring-head successively to weld; Require intrusion 0.1 ~ 0.3mm in welding process, note observing appearance of weld and uropore shaping; Require face of weld smooth, uropore zero defect; During welding, first welded seam 001, toward other end welding from one end, after having welded weld seam 001, welding head is moved to the start bit of weld seam 002, the in-line section bar be soldered is pushed away toward bracket, in-line Intermediate Gray boss rib section bar and the in-line section bar welded are assembled, by the parameter of welded seam 001, start welded seam 002, then profiled mounting, successively welded seam 003 ~ 014 successively, material is thus formed the half of whole framed side wallboard, then weld another side framed side wallboard in this way.Two halves framed side wallboard is stitched together and forms unitary side wallboard.
Further, described postwelding deflashing is after all having welded, and will weld eliminating flap edges with picking cutter, ensures face of weld and mother metal rounding off during operation.
Further, described back of weld polishing, after having welded, is unloaded by side wall from welding tooling, sized flap wheel is contained in the butt welded seam back side on electric grinding machine and carries out mechanical grinding.
Further, described final check is after polishing, carries out final check to side wall; After the assay was approved, operate into storehouse.
The invention has the advantages that:
The present invention takes aluminium alloy extrusions to be spliced to form railway aluminum alloy hopper car framed side wallboard, mainly contains following characteristics:
(1) adopt aluminium alloy extrusions composition wallboard, have Stability Analysis of Structures, intensity is high, the feature of good looking appearance, compares original to be riveted on framework with plate, and bulk strength will improve a lot, and profile is very attractive in appearance beautiful;
(2) microstructure change in welded joint heat affected zone is little. and unrelieved stress is lower, and welding work pieces distortion is little; Integral structure can be made well to be optimized by reasonably arranging section bar;
(3) energy constitution becomes the welding of longer weld seam, heavy in section, diverse location, is suitable for wide;
(4) operating process conveniently realizes mechanization, automation, and equipment is simple, and energy consumption is low, and effect is high;
(5) without the need to adding welding wire, do not need to weld front oxide film dissolving during weldering aluminum alloy, do not need atmosphere gas, cost is low;
(6) welding process safety, zero defect, without splashing, pollution-free, smoke dust, radiationless etc.;
(7) welding quality stable is reliable.
Accompanying drawing explanation
Fig. 1 is railway aluminum alloy hopper car framed side wallboard structural representation of the present invention;
Fig. 2 is a half of schematic top plan view of railway aluminum alloy hopper car framed side wallboard structure of the present invention;
Fig. 3 is in-line section bar schematic cross-section of the present invention;
Fig. 4 is word Intermediate Gray " people " font rib section bar schematic cross-section of the present invention;
Fig. 5 is with triangle rib section bar schematic cross-section in the middle of a word of the present invention;
Fig. 6 is with boss type material schematic cross-section in the middle of a word of the present invention.
Detailed description of the invention
The present invention is set forth further below in conjunction with the drawings and specific embodiments.
Embodiment one
Can be found out by attached Fig. 1 and 2, the present invention relates to a kind of railway aluminum alloy hopper car framed side wallboard, framed side wallboard entirety is spliced to form by aluminium alloy extrusions; According to shape and the requirement of car body side wallboard, adopt different aluminum alloys section bar, by friction stir welding, aluminium alloy extrusions is welded to each other, form monoblock aluminum alloy side wallboard.
Further, described aluminium alloy extrusions comprises 3 kinds of section bars, wherein, in-line section bar 16, word Intermediate Gray " people " font rib section bar 4, with triangle rib section bar 5 in the middle of one word, with boss type material 4 in the middle of one word, amount to 29, above-mentioned section bar is lined up in order, welded by friction stir welding, form monoblock aluminum alloy side wallboard and form monoblock aluminum alloy side wallboard formation monoblock aluminum alloy side wallboard.
Further, described aluminium alloy extrusions order arrangement is according to both sides symmetric offset spread mode, 2 blocks of in-line section bars 1 and 2 are respectively from edge, both sides to centre, with boss type material 3 in the middle of 1 piece of one word, 1 block of in-line section bar 4, with boss type material 5 in the middle of 1 piece of one word, 1 block of in-line section bar 6, with triangle rib section bar 7 in the middle of 1 piece of one word, 1 block of in-line section bar 8, 1 piece of one word Intermediate Gray " people " font rib section bar 9, 1 block of in-line section bar 10, with triangle rib section bar 11 in the middle of 1 piece of one word, 1 block of in-line section bar 12, 1 piece of one word Intermediate Gray " people " font rib section bar 13, 1 block of in-line section bar 14, , middle is with triangle rib section bar 15 in the middle of 1 piece of one word, add up and amount to 29 pieces in both sides, take friction stir welding to weld between each section bar and section bar, form unitary side wallboard.
Above-mentioned listed embodiment, just carries out clear, complete description to technical scheme of the present invention by reference to the accompanying drawings; Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As can be seen from above-described embodiment, the invention still further relates to a kind of friction stir welding method realizing above-mentioned railway aluminum alloy hopper car framed side wallboard, the aluminium alloy extrusions of composition railway aluminum alloy hopper car framed side wallboard is lined up in order, and by friction stir welding, each aluminium alloy extrusions is welded together each other, form the railway aluminum alloy hopper car framed side wallboard of monoblock.
Further, described Friction stir welding process is:
1) section bar inspection;
2) welds prepares;
3) section bar assembling;
4) agitating friction welding;
5) postwelding deflashing;
6) back of weld polishing;
7) final check.
Further, described section bar inspection is that side wall is inspected by random samples section bar by inspection procedure before carrying out agitating friction welding, inspect rear preparation section bar 29 by random samples and (comprise in-line Intermediate Gray chevron pointing rib section bar 4, in-line section bar 16, in-line Intermediate Gray triangle rib section bar 5, in-line Intermediate Gray boss rib section bar 4), with motor wire brush, mechanical grinding is carried out to welding region, require to remove surface film oxide, after polishing terminates, with alcohol or acetone wiping region to be welded upper and lower surface and interface.
Further, described welds prepares is with miking welding region thickness, requires that every 500mm measures a point, and observed reading is marked on section bar with marking pen.After measurement terminates, to (totally 2 groups) between in-line section bar and in-line section bar, (totally 4 groups) between in-line section bar and in-line Intermediate Gray triangle rib section bar, (totally 4 groups) between in-line section bar and in-line Intermediate Gray chevron pointing rib section bar, between in-line section bar and in-line Intermediate Gray boss rib section bar (totally 4 groups) select with to be assembled, check before assembling that composition backing is with or without foreign matters such as pit and aluminium bits, and composition backing is cleared up.
Further, in-line section bar 2 (weld seam 01#) is first selected in described section bar assembling, loads in welding gear frock, compresses upper surface, require backing plate and section bar welding region sturdy, side holds out against, assembly clearance≤0.4mm, unfitness of butt joint≤0.4mm.After having assembled, select stirring-head, wherein prewelding stirring-head specification is: shaft shoulder Φ 8mm, donut; The long 1mm of pin.Taper, threaded.Formal welding stirring-head specification is: pin long T-0.3mm≤L≤T-0.2mm, the shaft shoulder: Φ 20mm; Shaft shoulder form: evagination helix line.Mixing needle form specification is: taper, threaded, three tangent planes.
Further, further, described agitating friction welding is the welding procedure of editor's weld seam 001, and simulates, and require alignment deviation≤0.4mm, wall scroll weld seam starting and ending end does not weld length≤10mm; Prewelding parameter: rotating speed 1400rpm, welds fast 1000mm/min, formally welds parameter: rotating speed 1400rpm, weld fast 1000mm/min, adopts prewelding stirring-head and formal weldering stirring-head successively to weld; Require intrusion 0.1 ~ 0.3mm in welding process, note observing appearance of weld and uropore shaping; Require face of weld smooth, uropore zero defect; During welding, first welded seam 001, toward other end welding from one end, after having welded weld seam 001, welding head is moved to the start bit of weld seam 002, the in-line section bar be soldered is pushed away toward bracket, in-line Intermediate Gray boss rib section bar and the in-line section bar welded are assembled, by the parameter of welded seam 001, start welded seam 002, then profiled mounting, successively welded seam 003 ~ 014 successively, material is thus formed the half of whole framed side wallboard, then weld another side framed side wallboard in this way.Two halves framed side wallboard is stitched together and forms unitary side wallboard.
Further, described postwelding deflashing is after all having welded, and will weld eliminating flap edges with picking cutter, ensures face of weld and mother metal rounding off during operation.Cut side wall limit with sawing machine, end face is smooth, and cutting speed in feet per minute is fast, and every limit substantially increased production efficiency less than 7 minutes clipping time.
Further, described back of weld polishing, after having welded, is unloaded by side wall from welding tooling, sized flap wheel is contained in the butt welded seam back side on electric grinding machine and carries out mechanical grinding.
Further, described final check is after polishing, carries out final check to side wall.After the assay was approved, operate into storehouse.After the operation of FSW sidewall welding completes, it is carried out to the detection of geometrical and toleranging, utilize simultaneously the rim charge that cuts down to corresponding weld seam carry out just curved, carry on the back curved and tensile test.
The invention has the advantages that:
The present invention takes aluminium alloy extrusions to be spliced to form railway aluminum alloy hopper car framed side wallboard, mainly contains following characteristics:
(1) adopt aluminium alloy extrusions composition wallboard, have Stability Analysis of Structures, intensity is high, the feature of good looking appearance, compares original to be riveted on framework with plate, and bulk strength will improve a lot, and profile is very attractive in appearance beautiful;
(2) microstructure change in welded joint heat affected zone is little. and unrelieved stress is lower, and welding work pieces distortion is little; Integral structure can be made well to be optimized by reasonably arranging section bar;
(3) energy constitution becomes the welding of longer weld seam, heavy in section, diverse location, is suitable for wide;
(4) operating process conveniently realizes mechanization, automation, and equipment is simple, and energy consumption is low, and effect is high;
(5) without the need to adding welding wire, do not need to weld front oxide film dissolving during weldering aluminum alloy, do not need atmosphere gas, cost is low;
(6) welding process safety, zero defect, without splashing, pollution-free, smoke dust, radiationless etc.;
(7) welding quality stable is reliable.
Claims (10)
1. a railway aluminum alloy hopper car framed side wallboard, is characterized in that: framed side wallboard entirety is spliced to form by aluminium alloy extrusions; According to shape and the requirement of car body side wallboard, adopt different aluminum alloys section bar, by friction stir welding, aluminium alloy extrusions is welded to each other, form monoblock aluminum alloy side wallboard.
2. railway aluminum alloy hopper car framed side wallboard as claimed in claim 1, it is characterized in that: described aluminium alloy extrusions comprises 3 kinds of section bars, wherein, in-line section bar 16, one word Intermediate Gray " people " font rib section bar 4, with triangle rib section bar 5 in the middle of one word, with boss type material 4 in the middle of one word, amount to 29, above-mentioned section bar is lined up in order, welded by friction stir welding, form monoblock aluminum alloy side wallboard and form monoblock aluminum alloy side wallboard formation monoblock aluminum alloy side wallboard.
3. railway aluminum alloy hopper car framed side wallboard as claimed in claim 2, it is characterized in that: described aluminium alloy extrusions is according to the arrangement of both sides symmetric offset spread mode order, monolateral putting in order from edge to centre is 2 blocks of in-line section bars, with boss type material in the middle of 1 piece of one word, 1 block of in-line section bar, with boss type material in the middle of 1 piece of one word, 1 block of in-line section bar, with triangle rib section bar in the middle of 1 piece of one word, 1 block of in-line section bar, 1 piece of one word Intermediate Gray " people " font rib section bar, 1 block of in-line section bar, with triangle rib section bar in the middle of 1 piece of one word, 1 block of in-line section bar, 1 piece of one word Intermediate Gray " people " font rib section bar, 1 block of in-line section bar, center of symmetry is middle is with triangle rib section bar in the middle of 1 piece of one word, add up and amount to 29 pieces in both sides, between described various aluminium alloy extrusions and section bar, take friction stir welding to weld, form unitary side wallboard.
4. one kind realizes the friction stir welding method of railway aluminum alloy hopper car framed side wallboard described in claim 1, it is characterized in that: the aluminium alloy extrusions of composition railway aluminum alloy hopper car framed side wallboard is lined up in order, and by friction stir welding, each aluminium alloy extrusions is welded together each other, form the railway aluminum alloy hopper car framed side wallboard of monoblock.
5. friction stir welding method as claimed in claim 4, is characterized in that: described Friction stir welding process is:
Section bar is checked;
Welds prepares;
Section bar assembles;
Agitating friction welds;
Postwelding deflashing;
Back of weld is polished;
7) final check.
6. friction stir welding method as claimed in claim 5, it is characterized in that: described section bar inspection is that side wall is inspected by random samples section bar by inspection procedure before carrying out agitating friction welding, inspect rear preparation section bar 29 by random samples, comprise word Intermediate Gray " people " font rib section bar 4, in-line section bar 16, with triangle rib section bar 5 in the middle of one word, with boss type material 4 in the middle of one word, with motor wire brush, mechanical grinding is carried out to welding region, require to remove surface film oxide, after polishing terminates, with alcohol or acetone wiping region to be welded upper and lower surface and interface.
7. friction stir welding method as claimed in claim 5, is characterized in that: described welds prepares is with miking welding region thickness, requires that every 500mm measures a point, and is marked on section bar with marking pen by observed reading; After measurement terminates, to between in-line section bar and in-line section bar totally 2 groups, between in-line section bar and in-line Intermediate Gray triangle rib section bar totally 4 groups, between in-line section bar and in-line Intermediate Gray chevron pointing rib section bar totally 4 groups, between in-line section bar and in-line Intermediate Gray boss rib section bar totally 4 groups select with to be assembled, check before assembling that composition backing is with or without foreign matters such as pit and aluminium bits, and composition backing is cleared up.
8. friction stir welding method as claimed in claim 5, it is characterized in that: in-line section bar 2 (weld seam 01#) is first selected in described section bar assembling, load in welding gear frock, compress upper surface, require backing plate and section bar welding region sturdy, side holds out against, assembly clearance≤0.4mm, unfitness of butt joint≤0.4mm; After having assembled, select stirring-head, wherein prewelding stirring-head specification is: shaft shoulder Φ 8mm, donut; The long 1mm of pin; Taper, threaded; Formal welding stirring-head specification is: pin long T-0.3mm≤L≤T-0.2mm, the shaft shoulder: Φ 20mm; Shaft shoulder form: evagination helix line; Mixing needle form specification is: taper, threaded, three tangent plane mixing needles.
9. friction stir welding method as claimed in claim 8, it is characterized in that: further, described agitating friction welding is the welding procedure of editor's weld seam 001, and simulates, require alignment deviation≤0.4mm, wall scroll weld seam starting and ending end does not weld length≤10mm; Prewelding parameter: rotating speed 1400rpm, welds fast 1000mm/min, formally welds parameter: rotating speed 1400rpm, weld fast 1000mm/min, adopts prewelding stirring-head and formal weldering stirring-head successively to weld; Require intrusion 0.1 ~ 0.3mm in welding process, note observing appearance of weld and uropore shaping; Require face of weld smooth, uropore zero defect; During welding, first welded seam 001, toward other end welding from one end, after having welded weld seam 001, welding head is moved to the start bit of weld seam 002, the in-line section bar be soldered is pushed away toward bracket, in-line Intermediate Gray boss rib section bar and the in-line section bar welded are assembled, by the parameter of welded seam 001, start welded seam 002, then profiled mounting, successively welded seam 003 ~ 014 successively, material is thus formed the half of whole framed side wallboard, then weld another side framed side wallboard in this way; Two halves framed side wallboard is stitched together and forms unitary side wallboard.
10. friction stir welding method as claimed in claim 5, is characterized in that: described postwelding deflashing is after all having welded, and will weld eliminating flap edges with picking cutter, ensures face of weld and mother metal rounding off during operation; Described back of weld polishing, after having welded, is unloaded by side wall from welding tooling, sized flap wheel is contained in the butt welded seam back side on electric grinding machine and carries out mechanical grinding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376202.0A CN104908761B (en) | 2015-07-01 | 2015-07-01 | A kind of railway aluminium alloy hopper wagon framed side wallboard and its friction stir welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510376202.0A CN104908761B (en) | 2015-07-01 | 2015-07-01 | A kind of railway aluminium alloy hopper wagon framed side wallboard and its friction stir welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104908761A true CN104908761A (en) | 2015-09-16 |
| CN104908761B CN104908761B (en) | 2017-08-25 |
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| CN201510376202.0A Active CN104908761B (en) | 2015-07-01 | 2015-07-01 | A kind of railway aluminium alloy hopper wagon framed side wallboard and its friction stir welding method |
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