Screen aluminum alloy and welding process thereof
Technical field
The invention belongs to aluminum alloy bodywork parts, relate to the technique that this aluminum alloy grid is manufactured in screen aluminum alloy and welding.
Background technology
Screen aluminum alloy has advantages of good looking appearance, withstanding corrosion, easy cleaning, is widely used in train and automotive field, but because the welding performance of aluminum alloy is poor, often shape and structure is simple for existing car body screen aluminum alloy, can not meet operating needs; And screen aluminum alloy welding process is perfect not at present, in actual welding process, often easily produce welding deformation, need some follow-up adjusting techniques,, there is link too much and the problem such as operating difficulties in more complicated, has increased the waste of cost and resource.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of novel aluminum alloy grid.
For achieving the above object, the invention provides following technical scheme:
A kind of screen aluminum alloy, comprise grid body and filter frame, described grid body comprises frame and V-type bar, described V-type bar number is a plurality of and is parallel to each other, comprise V-type bar and lower V-type bar, described upper V-type bar and lower V-type bar notch in opposite directions and two ends be weldingly fixed on frame inwall, described filter frame is weldingly fixed on frame sidewall.
As screen aluminum alloy of the present invention preferably, between upper V-type bar and lower V-type bar, be provided with reinforced rib perpendicular to V-type bar direction, spot welding is connected described reinforced rib with lower V-type bar notch with upper V-type bar respectively, described reinforced rib two ends are weldingly fixed on frame inwall.
As screen aluminum alloy of the present invention preferably, described upper V-type bar and lower V-type bar are circular-arc, described upper V-type bar number is 12-16, described lower V-type bar number is 13-17, described upper V-type bar is in same curved surface, described lower V-type bar is in another curved surface.
As screen aluminum alloy of the present invention preferably, described frame is rectangle, and by four sections of aluminium section bar weldings, is formed.
As screen aluminum alloy of the present invention preferably, described filter frame integral body is U-shaped, by U-type strip a, H type bar and U-type strip b, be welded, described U-type strip a two ends are welded and fixed with one end of H type bar and U-type strip b respectively, and described U-type strip a21, H type bar 22 are relative with U-type strip b23 notch.
As screen aluminum alloy of the present invention preferably, also comprise jam, described jam is weldingly fixed on the outer wall of frame, and with frame outer wall vertical.
As screen aluminum alloy of the present invention preferably, grille section (upper and lower V-type is or/and grid body) all adopts the section bar of 6005A-T6.
As screen aluminum alloy of the present invention preferably, upper and lower V-type bar is staggered to be put.
Grid of the present invention is mainly used in the protection of high and cold equipment cabin of motor train unit, can guarantee the mechanical characteristics under the low temperature of-35 ℃; The present invention can be good at stopping blown sand, stone, rainwater access arrangement cabin by upper and lower V-type bar is reasonably set; Another newly-increased jam can well seal the joint place of grid and skirtboard.
The present invention also provides a kind of technique of welding this screen aluminum alloy, comprises the following steps:
1), frame welding: get aluminum strip and be placed in welding tooling, welding obtains grid frame, and during welding, bevel for welding is two Y shapes, groove angle is 68-72 °, welding parameter: I=130~150A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min;
2), grid body welding: first outer V-type bar is placed in to frame inside, is welded and fixed, then reinforced rib is put into frame inside, be welded and fixed, finally interior V-type bar is placed in to frame inside, be welded and fixed;
3), jam welding: jam is weldingly fixed on to the step of frame outer wall, this step adopts two-sided welding, welding parameter: I=120~130A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min;
4), filter frame welding: get U-type strip a, H type bar and U-type strip b, U-type strip a two ends are welded and fixed with one end of H type bar and U-type strip b respectively, U-type strip a during welding, U-type strip b notch are relative;
5), filter frame and grid body assembly welding: adopt the mode of interrupted welding by step 4) welding gained filter frame and step 2) welding gained grid body is welded and fixed.
As welding aluminum alloy grid technique of the present invention preferably, step 2) be welded and fixed inside and outside V-type bar welding parameter: I=180~200A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min; Welding parameter I=200~220A while being welded and fixed reinforced rib, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min.
As welding aluminum alloy grid technique of the present invention preferably, step 4) filter frame weld time, welding parameter: I=110~120A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min.
As welding aluminum alloy grid technique of the present invention preferably, step 5) filter frame welding parameter: I=120~140A during with grid body assembly welding, V=3.0~3.5mm/s, 100%Ar protects, gas flow=12~15L/min.
Beneficial effect of the present invention is: the technique of welding aluminum alloy grid of the present invention, by adjusting welding process step and welding condition, can significantly reduce welding deformation amount, improves yield rate, reduces costs, and enhances productivity.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearer, the invention provides following accompanying drawing and describe:
Fig. 1 is screen aluminum alloy block diagram of the present invention;
Fig. 2 is screen aluminum alloy birds-eye view of the present invention;
Fig. 3 is the A-A view of Fig. 2;
Fig. 4 is the B-B view of Fig. 2;
Fig. 5 is screen aluminum alloy filter frame constructional drawing;
The left view of Fig. 6 Fig. 5;
Fig. 7 a is screen aluminum alloy filter frame block diagram, and Fig. 7 b is I place enlarged drawing;
Fig. 8 a is U-type strip a constructional drawing, and Fig. 8 b is the A-A view of Fig. 8 a;
Fig. 9 a is H type bar constructional drawing, and Fig. 9 b is the left view of Fig. 9 a, the A-A view that figure c is figure a;
Figure 10 a is U-type strip b constructional drawing, and Figure 10 b is the A-A view of Figure 10 a;
In figure: 1-grid body, 2-filter frame, 3-jam; 11-frame, 12-V-type bar, 13-reinforced rib, 121-upper V-type bar, 122-lower V-type bar; 21-U-type strip a, 22-H type bar, 23-U-type strip b.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Embodiment 1:
As Figure 1-10 shows, the present embodiment screen aluminum alloy, comprise grid body 1 and filter frame 2, described grid body 1 comprises frame 11 and V-type bar 12, described V-type bar 12 numbers are a plurality of and are parallel to each other, comprise V-type bar 121 and lower V-type bar 122, described upper V-type bar 121 and lower V-type bar 122 notches in opposite directions and two ends be weldingly fixed on frame 11 inwalls, described filter frame 2 is weldingly fixed on frame 11 sidewalls.
In this enforcement, grille section all adopts the section bar of 6005A-T6.
In this enforcement, upper and lower V-type bar is staggered to be put.
In this enforcement, between upper V-type bar 121 and lower V-type bar 122, be provided with reinforced rib perpendicular to V-type bar 12 directions, described reinforced rib is connected with lower V-type bar 122 notch spot welding with upper V-type bar 121 respectively, and described reinforced rib two ends are weldingly fixed on frame 11 inwalls.
In this enforcement, described upper V-type bar 121 and lower V-type bar 122 are circular-arc, and described upper V-type bar 121 numbers are 12-16, and described lower V-type bar 122 numbers are 13-17, and described upper V-type bar 121 is in same curved surface, and described lower V-type bar 121 is in another curved surface; The transversal surface of the curved surface now consisting of upper V-type bar or lower V-type bar is identical with V-type strip, and profile is straight line.
In this enforcement, described frame 11 is rectangle, and by four sections of aluminium section bar weldings, is formed.
In this enforcement, described filter frame 2 integral body are U-shaped, by U-type strip a21, H type bar 22 and U-type strip b23, be welded, described U-type strip a21 two ends are welded and fixed with one end of H type bar 22 and U-type strip b23 respectively, and described U-type strip a21, H type bar 22 are relative with U-type strip b23 notch.
The screen aluminum alloy of this enforcement, also comprises jam 3, and described jam 3 is weldingly fixed on the outer wall of frame 11, and with frame 11 outer wall vertical; Jam is set, can prevents that grid is arranged on the space that skirtboard exists and enters sandstone, rainwater etc.
The technique of the present embodiment welding aluminum alloy grid, comprises the following steps:
1), frame welding: get aluminum strip and be placed in welding tooling, welding obtains grid frame, and during welding, bevel for welding is two Y shapes, groove angle is 68-72 °, welding parameter: I=130~150A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min; It should be noted that, the frame of the present embodiment is welded and is formed by four sections of aluminium section bars, also comprises at least two segment type material ends wherein carrying out crooked step (bevel for welding after bending process is butting grooves) before welding.
2), grid body welding: first outer V-type bar is placed in to frame inside, fix with frame interior welds, then reinforced rib is put into frame inside, and frame inside and V-type bar are welded and fixed, finally interior V-type bar is placed in to frame inside, and frame inside and reinforced rib are welded and fixed;
3), jam welding: jam is weldingly fixed on to the step of frame outer wall, this step adopts two-sided welding, welding parameter: I=120~130A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min;
4), filter frame welding: get U-type strip a, H type bar and U-type strip b, U-type strip a two ends are welded and fixed with one end of H type bar and U-type strip b respectively, U-type strip a during welding, U-type strip b notch are relative;
5), filter frame and grid body assembly welding: adopt the mode of interrupted welding by step 4) welding gained filter frame and step 2) welding gained grid body is welded and fixed, during welding, first filter frame is overlayed on the frame of grid body, then weld.
In the present embodiment, step 2) be welded and fixed inside and outside V-type bar welding parameter: I=180~200A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min; Welding parameter I=200~220A while being welded and fixed reinforced rib, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min.
In the present embodiment, step 4) filter frame weld time, welding parameter: I=110~120A, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min.
In the present embodiment, step 5) welding parameter: I=120~140A when filter frame and grid body assembly welding, V=3.0~3.5mm/s, 100%Ar protection, gas flow=12~15L/min.
The technique of welding aluminum alloy grid of the present invention, by adjusting welding process step and welding condition, can significantly reduce welding deformation amount, improves yield rate, reduces costs, and enhances productivity.
Fig. 1 is invention screen aluminum alloy block diagram, and as can be seen from the figure, screen aluminum alloy global shape of the present invention is similar to cuboid, and its long sideband has certain radian.
Fig. 2 is screen aluminum alloy birds-eye view of the present invention, and integral body is rectangle, and its aspect ratio is (680~720) * (530~570).
Fig. 3 is the A-A view (not shown filter frame) of Fig. 2; Therefrom can find out, V-type bar is divided into two-layer up and down, and upper strata V and lower floor's V-type notch arrange in opposite directions, and each V-type bar bearing of trend is identical, and V-type bar two ends are welded and fixed with frame inwall respectively; Scheme at the middle and upper levels each V-type bar in VXing Tiaohuo lower floor V-type bar and equidistantly arrange, and the projection of upper strata V-type bar is over against the gap of lower floor's V-type bar.
Fig. 4 is the B-B view (not shown filter frame) of Fig. 2; Between visible upper strata VXing Tiaohe lower floor V-type bar, be also provided with reinforced rib, in figure, the number of reinforced rib is two, and each reinforced rib two ends are welded and fixed with frame inwall respectively, and centre is fixed with each upper strata VXing Tiaohe lower floor V-type bar electric welding respectively.
Fig. 5 is aluminum alloy bodywork grid filtration mount structure figure; Visible this filter frame is welded by U-type strip a, H type bar and U-type strip b, and wherein U-type strip a two ends are welded and fixed with one end of H type bar and U-type strip b respectively, and U-type strip a, U-type strip b notch are relative;
Fig. 7 a is aluminum alloy bodywork grid filtration frame block diagram, and Fig. 7 b is I place enlarged drawing, and in figure, thick black line represents weld seam.
Fig. 8 a is U-type strip a constructional drawing, and Fig. 8 b is the A-A view of Fig. 8 a; Visible its cross section is U-shaped, and wall thickness is 2mm, and sectional dimension is 30 * 30mm.
Fig. 9 a is H type bar constructional drawing, and Fig. 9 b is the A-A view of Fig. 9 a; Visible its cross section is H type, and wall thickness is 2mm, and sectional dimension is 20 * 30mm, and the long edge lengths of its h is 58mm.
Figure 10 a is U-type strip b constructional drawing, and Figure 10 b is the A-A view of Figure 10 a; Visible its cross section is U-shaped, and wall thickness is 2mm, and sectional dimension is 20 * 30mm.
Finally explanation is, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can to it, make various changes in the form and details, and not depart from the claims in the present invention book limited range.