CN201109005Y - Sand mould for steel rail aluminothermic welding - Google Patents
Sand mould for steel rail aluminothermic welding Download PDFInfo
- Publication number
- CN201109005Y CN201109005Y CNU200720190800XU CN200720190800U CN201109005Y CN 201109005 Y CN201109005 Y CN 201109005Y CN U200720190800X U CNU200720190800X U CN U200720190800XU CN 200720190800 U CN200720190800 U CN 200720190800U CN 201109005 Y CN201109005 Y CN 201109005Y
- Authority
- CN
- China
- Prior art keywords
- rising head
- rail
- sand mold
- groove
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003466 welding Methods 0.000 title claims abstract description 47
- 239000004576 sand Substances 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 title description 31
- 239000010959 steel Substances 0.000 title description 31
- 230000000630 rising effect Effects 0.000 claims description 53
- 229910000679 solder Inorganic materials 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 8
- 239000003110 molding sand Substances 0.000 claims description 4
- 238000007528 sand casting Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 230000008602 contraction Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model relates to a rail sand mold, which comprises a polyhedral body cast by sand mixture, a welding groove arranged on the welding face of the body, a top trench positioned at the upper part of the welding groove, a pouring head arranged at the top face of the body and extending to the welding face of the body, a small shrink head passing through from the top face of the body to the bottom face of the body, and a big shrink head passing through from the top face of the body to the bottom face of the body, wherein, the outlet of the pouring head is communicated with the welding groove through a passage, the opening of the small shrink head is positioned in the groove of the pouring head, the big shrink head is positioned at the outer side of the small shrink head, and the opening of the big shrink head is positioned in the groove of the pouring head; a dummy club used for placing a shunt plug is integrated in the groove of the pouring head. The rail sand mold saves the preparation material, is easy for the site operation, and can improve the welding effect.
Description
Technical field
The utility model relates to a kind of rail welding instrument, particularly a kind of rail aluminothermy welding sand mold.
Background technology
Sand mold is the main composition portion part of rail aluminothermy when welding running gate system, it influence rail aluminothermy molten steel the type of flow of die cavity in proper order, solidification mode, and then influence the quality of welding point.
Utilize existing sand mold welded rails to have following problem: welding point web of the rail position stress is big, and indivedual joints produce cold cracking, and there is rarefaction defect in web of the rail weld metal, influences the tensile strength at web of the rail position.
Summary of the invention
The purpose of this utility model provides the welding of a kind of rail aluminothermy and use sand mold, is used for solving that prior art exists, and there is the defective of loosening in the web of the rail weld metal that utilizes the sand mold welded rails to cause.
Above-mentioned purpose of the present utility model is achieved in that the welding of a kind of rail aluminothermy use sand mold, comprises polyhedral body that is shaped as that molding sand casts, and described body comprises solder side, end face and bottom surface at least; From the recessed welding groove of body solder side; Be positioned at the runner gate on described welding groove top; Extend to the cast gate of body solder side from the body end face, the outlet of described cast gate is via the described welding groove of channel connection; Extend through the little rising head of body bottom surface from the body end face, the opening of this little rising head is arranged in the described port recess of watering; Extend through the big rising head of body bottom surface from the body end face, described big rising head is positioned at side outside the described little rising head, and its opening is positioned at described watering among the port recess; It is characterized in that having the boss that is used for placing shunting plug in the groove of described cast gate.
Wherein, described little rising head is a manhole.
Wherein, the little rising head root of described little rising head is an aperture expansion type root.
Wherein, described big rising head is a square through hole.
Wherein, the size of the big rising head root of described big rising head is less than the opening size of big rising head.
Wherein, described runner gate is communicated with described little rising head.
Wherein, described runner gate is a bore expansion type runner gate.
Wherein, described body is the class cuboid, and wherein said solder side is positioned at the side of body.
Wherein, the joint sealing groove that is used to be stained with seal case mud is offered at the edge of described solder side.
Wherein, the shape of described welding groove is corresponding with the rail shape.
Technique effect of the present utility model is: 1) by increasing the size of runner gate, make web of the rail top obtain the abundant feeding of molten steel; 2), make the fully feeding of flange of rail Delta Region metal by increasing little rising head root size; 3) square by big rising head is changed into by existing circle, conserve space is saved the preparation material; 4) by the joint sealing groove being set, be easy to execute-in-place in the sand mold outside.
Description of drawings
Fig. 1 is one of the utility model stereogram;
Fig. 2 is two of the utility model stereogram;
Fig. 3 is the A-A profile of Fig. 2;
Fig. 4 shows to utilize sand mold of the present utility model to carry out the schematic diagram of rail welding.
The specific embodiment
Rail aluminothermy welding running gate system generally includes bed die and side form, and the sand mold that the utility model relates to is the side form of the running gate system of rail aluminothermy welding.
Rail aluminium of the present utility model closes aluminothermy welding with sand mold as depicted in figs. 1 and 2, and the body 10 of this sand mold is a polyhedron, is preferably similar cuboid, and this body 10 has solder side 8 at least, and in abutting connection with the end face 12 and the bottom surface 13 of solder side 8.Here effect and the present position of sand mold of the present utility model when welding taken from alleged solder side 8, end face 12 and bottom surface 13, and for example, solder side 8 is used for welded rails when welding, and end face 12 is in the extreme higher position when welding.
In addition, alleged little rising head 2 and the big rising head 3 of the utility model relates to whole through hole.
From Fig. 1, Fig. 2 and Fig. 3 as can be seen, sand mold of the present utility model comprises: polyhedral body 10 of molding sand casting; From the recessed welding groove 7 of body solder side 8; Be positioned at the runner gate 1 on described welding groove 7 tops; Extend to the cast gate 5 of body solder side 8 from body end face 12, the outlet 51 of cast gate 5 is via the described welding groove 7 of channel connection; Extend through the little rising head 2 of body bottom surface 13 from body end face 12, the opening of this little rising head 2 is arranged in described cast gate 5 grooves; Extend through the big rising head 3 of body bottom surface 13 from body end face 12, described big rising head 3 is positioned at side outside the described little rising head 2, and its opening is positioned among described cast gate 5 grooves.Characteristics of the present utility model are to have the boss 51 that is used for placing shunting plug 9 in the groove of described cast gate 5.
As shown in Figure 1, little rising head 2 of the present utility model is a manhole.
Another characteristics of the present utility model are, change the little rising head root 21 of little rising head 2 into aperture expansion type root.So-called aperture expansion type root is meant: with respect to the little rising head root of tradition, increase the little rising head root in its aperture.Like this, little rising head root 21 can be stored more aluminothermy molten steel, thereby can postpone the setting time of this place's aluminothermy molten steel, make its setting time be later than solidifying of rail inside, thereby when molten steel cools is shunk, the volume contraction when little rising head root 21 not solidified aluminothermy molten steel can replenish rail inside molten steel solidification.
Another characteristics of the present utility model are that described big rising head 3 is a square through hole.Can under the situation that does not change its volume, reduce its height like this.In addition, the size of the big rising head root 31 of big rising head 3 is less than big riser openings size, and big riser openings described here is meant the opening of the big rising head 3 that is positioned at end face 12.
Characteristics more of the present utility model are to change described runner gate 1 into bore expansion type runner gate.So-called bore expansion type runner gate is meant: with respect to traditional runner gate, increase the runner gate of its opening bore.Like this, runner gate 1 can be stored more aluminothermy molten steel, thereby can postpone the setting time of this place's aluminothermy molten steel, make its setting time be later than solidifying of rail inside, thereby when molten steel cools is shunk, the volume contraction when the not solidified aluminothermy molten steel in runner gate 1 place can replenish rail inside molten steel solidification.
In addition, described runner gate 1 is connected with described little rising head 2.
Another characteristics of the present utility model are that the joint sealing groove 4 that is used to be stained with seal case mud is offered at the edge of solder side 8.This is because the joint sealing groove of sand mold was arranged on the jig of sand mold in the past, when joint sealing, owing to can have some gaps unavoidably between jig and the sand mold, can cause molten steel to leak outside, and after being arranged on the joint sealing groove on the sand mold, can exempt the generation of this phenomenon.
Fig. 4 shows the schematic diagram that utilizes slit between two rail of sand mold welding of the present utility model, when welding, bed die (or base plate) 11 is laid by present rail to be welded bottom, with label is two rail joint places of two the utility model sand molds difference buckles of I and II, then shunting plug 9 is placed on the boss 51 of cast gate 5, then joint sealing.Welding process is described below:
After the aluminothermy molten steel pours into the running gate system of being made up of sand mold and rail, at first be subjected to the obstruction of shunting plug 9, flow velocity reduces, flow direction changes, and the cast gate reserved by the shunting plug both sides of aluminothermy molten steel is injected in the die cavity then, and the stopping of the step that is subjected to simultaneously flowing slowly, the flow velocity of molten steel further reduces, help reducing the impulsive force of molten steel, avoid coming off of molding sand, make molten steel filling die cavity reposefully die cavity.With the injection of aluminothermy molten steel, the liquid level of molten steel rises gradually in the die cavity, and gas in the die cavity and the cold molten steel that injects earlier and impurity overflow from the big rising head 3 that is positioned at the foot both sides and the opening of little rising head 2.When the molten steel liquid level rises near the rail head height, molten steel will be that runner gate 1 flow into the little rising head 2 with the passage of die cavity at the rail head position from little rising head 2, make the molten steel of little rising head bottom stop to flow or flow quite slowly, to the last molten steel is full of whole die cavity.
In cooled and solidified process subsequently, because the metal at flange of rail position at first pours in the casting mold, thereby the temperature that should locate molten steel is minimum, and the temperature of rail head position molten steel is high slightly, help realizing that molten steel is by the consecutive solidification of the flange of rail to rail head, reduce to take place shrinkage cavity and the loose tendency that produces, rising head can also carry out feeding to flange of rail pin zone and rail head zone effectively simultaneously, further avoids weldering to meet metal generation of defects in process of setting.
From the situation that is provided with of whole running gate system, molten steel flows steadily therein, and the position of rising head is provided with appropriately, and the solidification of molten steel order is reasonable, and the eliminating of slag gas is unobstructed in the die cavity.
Although above the utility model is had been described in detail, the utility model is not limited thereto, and those skilled in the art of the present technique can carry out various modifications according to principle of the present utility model.Therefore, all modifications of being done according to the utility model principle all should be understood to fall into protection domain of the present utility model.
Claims (10)
1, sand mold is used in a kind of rail aluminothermy welding, comprising:
Molding sand casting be shaped as polyhedral body (10), described body (10) comprises solder side (8), end face (12) and bottom surface (13) at least;
From the recessed welding groove (7) of described body solder side (8);
Be positioned at the runner gate (1) on described welding groove (7) top;
Extend to the cast gate (5) of described solder side (8) from described end face (12), the outlet (51) of described cast gate (5) is via the described welding groove of channel connection (7);
Extend through the little rising head (2) of described bottom surface (13) from described end face (12), the opening of this little rising head (2) is arranged in described cast gate (5) groove;
Extend through the big rising head (3) of described bottom surface (13) from described end face (12), described big rising head (3) is positioned at side outside the described little rising head (2), and its opening is positioned among described cast gate (5) groove;
It is characterized in that, in the groove of described cast gate (5), be formed with the boss (51) that is used for placing shunting plug (9).
2, sand mold is used in rail aluminothermy welding according to claim 1, it is characterized in that described little rising head (2) is a manhole.
3, sand mold is used in rail aluminothermy welding according to claim 2, it is characterized in that the little rising head root (21) of described little rising head (2) is an aperture expansion type root.
4, sand mold is used in rail aluminothermy welding according to claim 1, it is characterized in that described big rising head (3) is a square through hole.
5, sand mold is used in rail aluminothermy welding according to claim 4, it is characterized in that big rising head root (31) size of described big rising head (3) is less than big riser openings size.
6, sand mold is used in rail aluminothermy welding according to claim 1, it is characterized in that described runner gate (1) is communicated with described little rising head (2).
7, sand mold is used in rail aluminothermy welding according to claim 6, it is characterized in that described runner gate (1) is a bore expansion type runner gate.
8, sand mold is used in rail aluminothermy welding according to claim 1, it is characterized in that described body (10) is the class cuboid, and wherein solder side (8) is positioned at the side of body (10).
9, sand mold is used in rail aluminothermy welding according to claim 8, it is characterized in that the edge of described solder side (8) has the joint sealing groove (4) that is used to be stained with seal case mud.
10, sand mold is used in rail aluminothermy welding according to claim 1, it is characterized in that wherein, the shape of described welding groove (7) is corresponding with the rail shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720190800XU CN201109005Y (en) | 2007-12-14 | 2007-12-14 | Sand mould for steel rail aluminothermic welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720190800XU CN201109005Y (en) | 2007-12-14 | 2007-12-14 | Sand mould for steel rail aluminothermic welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201109005Y true CN201109005Y (en) | 2008-09-03 |
Family
ID=39893523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720190800XU Expired - Fee Related CN201109005Y (en) | 2007-12-14 | 2007-12-14 | Sand mould for steel rail aluminothermic welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201109005Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554187A (en) * | 2012-02-08 | 2012-07-11 | 中国铁道科学研究院金属及化学研究所 | Steel rail thermite welding system and method |
| CN103128438A (en) * | 2012-12-28 | 2013-06-05 | 中国铁道科学研究院金属及化学研究所 | Trough type steel rail thermite welding sand mould |
| CN106181023A (en) * | 2016-08-22 | 2016-12-07 | 洛阳双瑞橡塑科技有限公司 | A kind of rail aluminum weld running gate system |
| WO2019073151A1 (en) | 2017-10-09 | 2019-04-18 | Pandrol | Moulding assembly for aluminothermic welding of rails and method for aluminothermic welding of rails |
-
2007
- 2007-12-14 CN CNU200720190800XU patent/CN201109005Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554187A (en) * | 2012-02-08 | 2012-07-11 | 中国铁道科学研究院金属及化学研究所 | Steel rail thermite welding system and method |
| CN103128438A (en) * | 2012-12-28 | 2013-06-05 | 中国铁道科学研究院金属及化学研究所 | Trough type steel rail thermite welding sand mould |
| CN103128438B (en) * | 2012-12-28 | 2016-08-03 | 中国铁道科学研究院金属及化学研究所 | A kind of trough type steel rail thermite welding sand mould |
| CN106181023A (en) * | 2016-08-22 | 2016-12-07 | 洛阳双瑞橡塑科技有限公司 | A kind of rail aluminum weld running gate system |
| WO2019073151A1 (en) | 2017-10-09 | 2019-04-18 | Pandrol | Moulding assembly for aluminothermic welding of rails and method for aluminothermic welding of rails |
| CN111432973A (en) * | 2017-10-09 | 2020-07-17 | 潘得路公司 | Molded assembly for thermite welded rail and method for thermite welded rail |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8061409B2 (en) | Mold | |
| CN101618428B (en) | Method for casting hub casts of aerogenerators | |
| CN201109005Y (en) | Sand mould for steel rail aluminothermic welding | |
| CN206567499U (en) | A kind of running gate system of automobile brake caliper casting | |
| CN101618429B (en) | Method for casting hub casts of aerogenerators | |
| CN110014125B (en) | Casting structure of core-spun craft sand core combination of diesel engine cylinder body | |
| CN106825407A (en) | A kind of sand mold manufactures component and casting method | |
| CN208303802U (en) | A kind of casting mold of automobile clutch pressure plate casting | |
| CN105598376A (en) | Combined type pouring basin | |
| CN101693292A (en) | Integral casting-in method for sealing valve body | |
| CN100542716C (en) | The regression formula running gate system of casting train wheel | |
| CN106670393A (en) | Core assembling method and die | |
| CN206356535U (en) | A kind of running gate system cast for integrated exhaust manifolds cylinder head | |
| CN206425490U (en) | A kind of casting pattern structure for magnesium iron material EPB calipers | |
| CN204413064U (en) | A kind of oil drilling pump crosshead die | |
| CN203751247U (en) | Casting and pouring device of engine cylinder cover | |
| CN206794673U (en) | A kind of model structure for entering water for DISA support independence rising heads | |
| CN207127215U (en) | Sand mold device and mo(u)lding equipment | |
| CN103128438B (en) | A kind of trough type steel rail thermite welding sand mould | |
| CN207386499U (en) | A casting sand box of a water-cooled high-pressure oil cylinder body | |
| JP2007514550A (en) | Method and apparatus for producing durable thin-walled castings | |
| CN213224206U (en) | Bottom and middle cross gate and valve pouring, middle way and middle way flange feeding system | |
| CN108160936A (en) | A kind of small-sized volute casting mould and casting method | |
| CN110976778B (en) | A rapid casting method for a large marine engine distributor and a sand core assembly | |
| CN104275443B (en) | A kind of manufacture method of blast furnace inlaid brick cooling wall running gate system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20151214 |
|
| EXPY | Termination of patent right or utility model |