CN107717255B - method for manufacturing grate bar - Google Patents
method for manufacturing grate bar Download PDFInfo
- Publication number
- CN107717255B CN107717255B CN201711128894.2A CN201711128894A CN107717255B CN 107717255 B CN107717255 B CN 107717255B CN 201711128894 A CN201711128894 A CN 201711128894A CN 107717255 B CN107717255 B CN 107717255B
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- Prior art keywords
- welding
- grate
- grate bar
- surfacing
- base plate
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Classifications
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
- F27B21/02—Sintering grates or tables
Abstract
The invention discloses a manufacturing method of a grate bar in the technical field of manufacturing, which comprises the following steps: combining the n' grate bar bodies; plating a layer of material which is the same as the material of the welding wire II on each grate bar body; placing each grate body on a base plate, wherein the connecting section of the adjacent grate body corresponds to 2 fluid grooves which are opposite to the adjacent base plate; preparing program codes; preparing for welding; starting overlaying of the first support structure; stopping overlaying the first support structure; starting overlaying of the second support structure; stopping overlaying the second support structure; the welding wire I in the automatic wire feeder is changed into the welding wire II; starting surfacing of a formed part; removing the substrate and transferring the substrate to a heating furnace; setting the heating temperature of a heating furnace; starting the heating furnace to heat the parts, so that the first support structure and the second support structure are completely melted, and the substrate is separated from the grate bars; closing the heating furnace, and taking down the furnace grate bars after the parts are cooled; the grate bar manufactured by the invention has high strength, is simple and reliable and has low labor intensity.
Description
Technical Field
The invention relates to a manufacturing method, in particular to a manufacturing method of a grate bar.
Background
The sintering pallet is an important component of the sintering machine, and the grate bars are sequentially arranged on the pallet beam or the heat insulation sleeve, so that the heat transmitted to the pallet beam or the heat insulation piece by the sinter is reduced, and the service life of the sintering pallet is prolonged. The existing grate bars are single, and are not combined for use, the existing grate bars are low in strength, difficult to replace and easy to fall off when turned, and a method for manufacturing a new grate bar formed by combining and using grate bar bodies is not provided.
disclosure of Invention
aiming at the defects in the prior art, the invention aims to solve the technical problem of poor product consistency in the prior art and provide the manufacturing method of the grate bar.
the purpose of the invention is realized as follows: the manufacturing method of the fire grate bar, the fire grate bar includes the body of the grate bar, in the left and right direction, one end of the uppermost portion of the said body of the grate bar has flange portions, another end of the uppermost portion of the body of the grate bar has recesses identical to flange portion shape, the said flange portion can be blocked in the recess; the device comprises a support mechanism and a plurality of base plates, wherein two ends of each base plate in the left and right direction are provided with fluid grooves enough for accommodating flange parts, the support mechanism comprises a liftable support frame and a movable workbench, a welding gun is fixedly connected onto the support frame, a horizontal part of a connecting seat is fixedly connected onto a shell of the welding gun, the end part of the horizontal part is connected with an inclined part which inclines downwards, a wire feeding guide head is connected onto the inclined part, the wire feeding guide head is part of an automatic wire feeder, the welding gun is part of the automatic wire feeder, and a welding wire in the wire feeding guide head is over against a welding area below a welding head of the welding gun; the method for manufacturing the grate bar comprises the following steps:
(1) plating a layer of material which is the same as the material of the welding wire II on each grate bar body;
(2) Combining n '(n' is not less than 2) grate bodies according to actual needs, namely clamping the flange part of one grate body into the groove of the other grate body, and repeating the steps to form the required grate;
(3) placing each grate body on a base plate, wherein the connecting section of the adjacent grate body corresponds to 2 fluid grooves which are opposite to the adjacent base plate;
(4) preparation of program code: compiling a surfacing control program by using automatic programming software, and inputting the surfacing control program into a control computer of the manufacturing equipment;
(5) Welding preparation: placing the base plates with the same number as the grate bodies on a workbench, fixedly installing a first base plate a1 on the workbench, tightly attaching the opposite ends of a second base plate a2 and a1 together, fixedly installing a base plate a2 on the workbench, tightly attaching the opposite ends of a third base plate a3 and a second base plate a2 together, fixedly installing a third base plate a3 on the workbench, and so on, and placing a first welding wire in an automatic wire feeder;
(6) starting overlaying of the first support structure: connecting an automatic wire feeder and a welding gun, adjusting an initial position point of surfacing welding, controlling a support frame to descend, enabling a welding wire at the bottom of a wire feeding guide head to be aligned with a welding area where the edge of a grate body is intersected with a substrate, operating a control program, controlling the horizontal movement of a workbench, and controlling a computer to control the automatic wire feeder to automatically feed wires until surfacing welding between the edge area of the grate body and the substrate is finished, so that a first support structure for supporting the substrate and a furnace grate is formed, and the furnace grate is fixed on the spliced substrate;
(7) Closing the automatic wire feeder, and stopping the surfacing of the first support structure;
(8) And (3) starting surfacing of the second support structure: switching on the automatic wire feeder and the welding gun, adjusting an initial position point of surfacing welding to enable the welding head to align to a surfacing welding area left between the upper sides of the adjacent substrates, operating a control program, controlling the horizontal movement of the first workbench, controlling the lifting of the support frame, and controlling the automatic wire feeder to automatically feed wires under the control of a computer until the surfacing welding of the areas between all the adjacent substrates is completed to form a second support structure;
(9) Closing the automatic wire feeder, and stopping surfacing of the second support structure;
(10) And (5) welding preparation is carried out again: the welding wire I in the automatic wire feeder is changed into the welding wire II;
(11) starting the surfacing of the formed piece: connecting the automatic wire feeder and the welding gun, adjusting the initial position point of surfacing welding, enabling the welding head to be aligned with the gap left between the flange part and the groove corresponding to the end part of the grate bar, controlling the movement of the workbench until the surfacing welding of the gap left between the flange part and the groove of all adjacent grate bar bodies is finished, forming a forming structure, and enabling the structure of the grate bar to be more stable;
(12) Detaching the substrate from the workbench and transferring the substrate into a heating furnace;
(13) setting the heating temperature of the heating furnace to be higher than the melting point of the first welding wire and lower than the melting points of the grate bar, the base plate and the second welding wire;
(14) starting the heating furnace to heat the parts, so that the first support structure and the second support structure are completely melted, and the substrate is separated from the grate bars;
(15) Closing the heating furnace, and taking down the grate bars from the base plate after the parts are cooled to finish the manufacture of the grate bars;
The melting point of the first welding wire is lower than that of the second welding wire, and the melting point of the second welding wire is lower than that of the grate bar body.
when 1 grate bar body which is actually needed is used for separating the combined grate bars to form the grate bars, the manufacturing method comprises the following steps:
(15a) putting the furnace grate bars in the step (15) into a heating furnace;
(15b) setting the heating temperature of the heating furnace to be higher than the melting point of the second welding wire and lower than the melting point of the grate bar bodies, so that the forming structure is completely melted, and the grate bar bodies are separated from each other;
(15c) and closing the heating furnace, and taking out the separated furnace grate bars from the heating furnace after the parts are cooled, thereby finishing the manufacture of the furnace grate bars.
as a further improvement of the invention, in the step (6) and the step (11), the movement of the workbench is controlled by the control computer.
In order to prevent the oxidation of the overlaying layer, the automatic welding wire machine is communicated with a gas storage bottle storing argon gas, before overlaying is started, the automatic welding wire machine is communicated with the argon gas, and a welding nozzle of a welding gun sprays the argon gas; after welding, the argon is kept connected for a period of time to prevent oxidation.
In order to further improve the welding reliability of the second welding wire and the grate bar, in the step (3), the thickness of the plating layer on the grate bar body is not less than 3 mm.
Compared with the prior art, the invention has the technical effects that: according to the invention, the grate bar body is welded on the base plates, one plane which is formed by surfacing is used as a first supporting structure for fixing the position between the base plates, and the other plane which is formed by surfacing is used as a second supporting structure for supporting the grate bar to fix the position on the base plates, so that the connecting structure between the base plates and the grate bar body is more stable; the fluid groove arranged on the base plate facilitates the first welding wire in a molten state to flow out along the fluid groove; the grate bar structure manufactured by the manufacturing method is more reliable and consistent in product, convenient to manufacture and low in labor intensity; when only one grate body is needed to form the grate bar in actual use and no existing finished product exists, the combined grate bar can be separated according to the methods from the step (15 a) to the step (15 c) to form a single grate bar, and the method is simple and reliable; the invention can be applied to the work of manufacturing the grate bars which are combined and used according to the actual requirements or used singly.
drawings
FIG. 1 is a schematic view of the structure of a single grate bar according to the present invention.
FIG. 2 is a schematic view showing the structure of 2 grate bars according to the present invention when they are used in combination.
fig. 3 is a schematic perspective view of the auxiliary manufacturing of the grate bars according to the present invention.
fig. 4 is a partial enlarged view a of the present invention.
the welding device comprises a grate body 1, a groove 2, a flange portion 3, a workbench 4, a wire feeding guide head 5, a welding gun 6, a base plate 7, a fluid groove 8, a clamp holder 9, a connecting seat 10, a horizontal portion 1001, an inclined portion 1002 and a support frame 11.
Detailed Description
the invention is further described below with reference to the accompanying drawings.
A manufacturing method of a grate bar comprises a grate bar body 1, wherein in the left and right direction, one end of the uppermost part of the grate bar body 1 is provided with a flange part 3, the other end of the uppermost part of the grate bar body 1 is provided with a groove 2 with the same shape as the flange part 3, and the flange part 3 can be clamped in the groove 2; the device comprises a support mechanism and a plurality of base plates 7, wherein the two ends of each base plate 7 in the left and right direction are provided with fluid grooves 8 enough for accommodating flange parts 3, the support mechanism comprises a liftable support frame 11 and a movable workbench 4, the support frame 11 is fixedly connected with a holding clamp 9, the holding clamp 9 locks a welding gun 6, the shell of the welding gun 6 is fixedly connected with a horizontal part of a connecting seat 10, the end part of the horizontal part 1001 is connected with an inclined part 1002 inclining downwards, the inclined part 1002 is connected with a wire feeding guide head 5, the wire feeding guide head 5 is a part of an automatic wire feeder, the welding gun 6 is a part of the automatic wire feeder, and welding wires in the wire feeding guide head 5 are over against a welding area below a welding head of the welding gun 6; the method for manufacturing the grate bars comprises the following steps:
(1) Plating a layer of material which is the same as the material of the welding wire II on each grate body 1;
(2) combining n '(n' is not less than 2) grate bodies 1 according to actual needs, namely clamping the flange part 3 of one grate body 1 into the groove 2 of the other grate body 1, and repeating the steps in the same order to form the required grate;
(3) Placing each grid section body 1 on a base plate 7, wherein the connecting section of the adjacent grid section body 1 corresponds to 2 fluid grooves 8 opposite to the adjacent base plate 7;
(4) preparation of program code: compiling a surfacing control program by using automatic programming software, and inputting the surfacing control program into a control computer of the manufacturing equipment;
(5) welding preparation: placing the base plates 7 with the same number as the grate bodies 1 on a workbench 4, fixedly installing a first base plate a1 on the workbench 4, after the opposite ends of a second base plate a2 and a1 are clung together, fixedly installing a base plate a2 on the workbench 4, after the opposite ends of a third base plate a3 and a second base plate a2 are clung together, fixedly installing a third base plate a3 on the workbench 4, and so on, and placing a first welding wire in an automatic wire feeder;
(6) Starting overlaying of the first support structure: connecting an automatic wire feeder and a welding gun 6, adjusting an initial position point of surfacing, controlling a support frame 11 to descend, aligning a welding wire I at the bottom of a wire feeding guide head 5 to a welding area where the edge of a grate body 1 and a substrate 7 are intersected, operating a control program, controlling a workbench 4 to horizontally move, and controlling a computer to control the automatic wire feeder to automatically feed wires until all surfacing between the edge area of the grate body 1 and the substrate 7 is finished, so that a first support structure for supporting the substrate 7 and a first furnace grate is formed, and the furnace grate is fixed on the substrate 7 which is spliced together;
(7) closing the automatic wire feeder, and stopping the surfacing of the first support structure;
(8) And (3) starting surfacing of the second support structure: switching on the automatic wire feeder and the welding gun 6, adjusting the initial position point of surfacing welding to enable the welding head to align to a surfacing welding area left between the upper sides of the adjacent substrates 7, operating a control program, controlling the horizontal movement of the first workbench 4, controlling the lifting of the support frame 11, and controlling the automatic wire feeder to automatically feed wires by a computer until the surfacing welding of the areas between all the adjacent substrates 7 is completed to form a second support structure;
(9) Closing the automatic wire feeder, and stopping surfacing of the second support structure;
(10) and (5) welding preparation is carried out again: the welding wire I in the automatic wire feeder is changed into the welding wire II;
(11) Starting the surfacing of the formed piece: connecting an automatic wire feeder and a welding gun 6, adjusting an initial position point of surfacing welding, enabling a welding head to be aligned with a gap reserved between the flange part 3 and the groove 2 corresponding to the end part of the furnace grate bar, controlling the movement of the workbench 4 until the surfacing welding of the gaps reserved between the flange parts 3 and the grooves 2 of all adjacent grate bar bodies 1 is finished, forming a forming structure, and enabling the structure of the furnace grate bar to be more stable;
(12) Detaching the substrate 7 from the table 4 and transferring the substrate into the heating furnace;
(13) setting the heating temperature of the heating furnace to be higher than the melting point of the first welding wire and lower than the melting points of the grate bar, the base plate 7 and the second welding wire;
(14) starting the heating furnace to heat the parts, so that the first support structure and the second support structure are completely melted, and the substrate 7 is separated from the grate bars;
(15) closing the heating furnace, and taking down the grate bars from the base plate 7 after the parts are cooled to finish the manufacture of the grate bars;
the melting point of the first welding wire is lower than that of the second welding wire, and the melting point of the second welding wire is lower than that of the grate bar body 1.
in order to separate the combined grate bars, when 1 grate bar body 1 which is actually needed forms the grate bars, the manufacturing method comprises the following steps:
(15a) putting the grate bars in the step (15) into a heating furnace;
(15b) Setting the heating temperature of the heating furnace to be higher than the melting point of the second welding wire and lower than the melting point of the grid section bodies 1, so that the forming structure is completely melted, and the grid section bodies 1 are separated from each other;
(15c) and closing the heating furnace, and taking out the separated furnace grate bars from the heating furnace after the parts are cooled, thereby finishing the manufacture of the furnace grate bars.
In the step (6) and the step (11), the movement of the workbench 4 and the lifting of the support frame 11 are controlled by a control computer;
The supporting frame 11 and the workbench 4 used in the present invention are common to the machine tools in the prior art, and the supporting frame 11 and the workbench 4 are only auxiliary tools, so the specific structure of how to realize the lifting of the supporting frame 11 and the left-right back-and-forth movement of the workbench 4 is not described (as shown in fig. 3, the supporting frame 11 and the workbench 4 are only a simple illustration, and the structure for driving the supporting frame 11 and the workbench 4 to move is not shown).
in order to prevent the oxidation of the overlaying layer, the automatic welding wire machine is communicated with a gas storage bottle storing argon, before overlaying is started, the automatic welding wire machine is communicated with the argon, and a welding nozzle of a welding gun 6 sprays the argon; after welding, the argon is kept connected for a period of time to prevent oxidation.
in order to further improve the welding reliability of the second welding wire and the grate bar, in the step (3), the thickness of the plating layer on the grate bar body 1 is not less than 3 mm.
Compared with the prior art, the invention has the technical effects that: according to the invention, the grate body 1 is welded on the base plates 7, one plane which is formed by surfacing is used as a first supporting structure for fixing the positions of the base plates 7, and the other plane which is formed by surfacing is used as a second supporting structure for supporting the furnace grate at the positions of the base plates 7, so that the connecting structure between the base plates 7 and the grate body 1 is more stable; the fluid groove 8 arranged on the base plate 7 facilitates the welding wire I in a molten state to flow out along the fluid groove 8; the grate bar structure manufactured by the manufacturing method is more reliable and consistent in product, convenient to manufacture and low in labor intensity; when only one grate body 1 is needed to form the grate bar in actual use, and no existing finished product exists, the combined grate bar can be separated according to the methods from the step (15 a) to the step (15 c) to form a single grate bar, and the method is simple and reliable; the invention can be applied to the work of manufacturing the grate bars which are combined and used according to the actual requirements or used singly.
the present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts based on the disclosed technical solutions, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (5)
1. the manufacturing method of the grate bar is characterized in that the grate bar comprises a grate bar body, one end of the uppermost part of the grate bar body is provided with a flange part in the left-right direction, the other end of the uppermost part of the grate bar body is provided with a groove with the same shape as the flange part, and the flange part can be clamped in the groove; the device for manufacturing the furnace grate comprises a supporting mechanism and a plurality of base plates, wherein fluid grooves enough for containing flange parts are formed in the two ends of each base plate in the left and right directions, the supporting mechanism comprises a lifting supporting frame and a movable workbench, a welding gun is fixedly connected onto the supporting frame, a horizontal part of a connecting seat is fixedly connected onto a shell of the welding gun, the end part of the horizontal part is connected with an inclined part which inclines downwards, a wire feeding guide head is connected onto the inclined part, the wire feeding guide head is part of an automatic wire feeder, the welding gun is part of the automatic wire feeder, and a welding wire in the wire feeding guide head is over against a welding area below a welding head of the welding gun; the method for manufacturing the grate bar comprises the following steps:
(1) Plating a layer of material which is the same as the material of the welding wire II on each grate bar body;
(2) combining n '(n' is not less than 2) grate bodies according to actual needs, namely clamping the flange part of one grate body into the groove of the other grate body, and repeating the steps to form the required grate;
(3) Placing each grate body on a base plate, wherein the connecting section of the adjacent grate body corresponds to 2 fluid grooves which are opposite to the adjacent base plate;
(4) preparation of program code: compiling a surfacing control program by using automatic programming software, and inputting the surfacing control program into a control computer of the manufacturing equipment;
(5) welding preparation: placing the base plates with the same number as the grate bodies on a workbench, fixedly installing a first base plate a1 on the workbench, tightly attaching the opposite ends of a second base plate a2 and a1 together, fixedly installing a base plate a2 on the workbench, tightly attaching the opposite ends of a third base plate a3 and a second base plate a2 together, fixedly installing a third base plate a3 on the workbench, and so on, and placing a first welding wire in an automatic wire feeder;
(6) starting overlaying of the first support structure: connecting an automatic wire feeder and a welding gun, adjusting an initial position point of surfacing welding, controlling a support frame to descend, enabling a welding wire at the bottom of a wire feeding guide head to be aligned with a welding area where the edge of a grate body is intersected with a substrate, operating a control program, controlling the horizontal movement of a workbench, and controlling a computer to control the automatic wire feeder to automatically feed wires until surfacing welding between the edge area of the grate body and the substrate is finished, so that a first support structure for supporting the substrate and a furnace grate is formed, and the furnace grate is fixed on the spliced substrate;
(7) closing the automatic wire feeder, and stopping the surfacing of the first support structure;
(8) and (3) starting surfacing of the second support structure: switching on the automatic wire feeder and the welding gun, adjusting an initial position point of surfacing welding to enable the welding head to align to a surfacing welding area left between the upper sides of the adjacent substrates, operating a control program, controlling the horizontal movement of the first workbench, controlling the lifting of the support frame, and controlling the automatic wire feeder to automatically feed wires under the control of a computer until the surfacing welding of the areas between all the adjacent substrates is completed to form a second support structure;
(9) Closing the automatic wire feeder, and stopping surfacing of the second support structure;
(10) and (5) welding preparation is carried out again: the welding wire I in the automatic wire feeder is changed into the welding wire II;
(11) Starting the surfacing of the formed piece: connecting the automatic wire feeder and the welding gun, adjusting the initial position point of surfacing welding, enabling the welding head to be aligned with the gap left between the flange part and the groove corresponding to the end part of the grate bar, controlling the movement of the workbench until the surfacing welding of the gap left between the flange part and the groove of all adjacent grate bar bodies is finished, forming a forming structure, and enabling the structure of the grate bar to be more stable;
(12) detaching the substrate from the workbench and transferring the substrate into a heating furnace;
(13) setting the heating temperature of the heating furnace to be higher than the melting point of the first welding wire and lower than the melting points of the grate bar, the base plate and the second welding wire;
(14) Starting the heating furnace to heat the parts, so that the first support structure and the second support structure are completely melted, and the substrate is separated from the grate bars;
(15) closing the heating furnace, and taking down the grate bars from the base plate after the parts are cooled to finish the manufacture of the grate bars;
the melting point of the first welding wire is lower than that of the second welding wire, and the melting point of the second welding wire is lower than that of the grate bar body.
2. the manufacturing method of the grate bar according to claim 1, wherein when 1 grate bar body is actually required to form the grate bar, the manufacturing method comprises the following steps:
(15a) putting the furnace grate bars in the step (15) into a heating furnace;
(15b) setting the heating temperature of the heating furnace to be higher than the melting point of the second welding wire and lower than the melting point of the grate bar bodies, so that the forming structure is completely melted, and the grate bar bodies are separated from each other;
(15c) And closing the heating furnace, and taking out the separated furnace grate bars from the heating furnace after the parts are cooled, thereby finishing the manufacture of the furnace grate bars.
3. The method for manufacturing a grate bar according to claim 1 or 2, wherein in the steps (6) and (11), the movement of the work table is controlled by a control computer.
4. The manufacturing method of the grate bar according to claim 1 or 2, wherein the automatic welding wire machine is communicated with a gas storage bottle storing argon gas, before surfacing welding is started, the automatic welding wire machine is communicated with the argon gas, and a welding nozzle of a welding gun sprays the argon gas; after welding, the argon is kept connected for a period of time to prevent oxidation.
5. the method for manufacturing the grate bar of claim 1 or 2, wherein in the step (3), the thickness of the coating on the grate bar body is not less than 3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128894.2A CN107717255B (en) | 2017-11-15 | 2017-11-15 | method for manufacturing grate bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711128894.2A CN107717255B (en) | 2017-11-15 | 2017-11-15 | method for manufacturing grate bar |
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| Publication Number | Publication Date |
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| CN107717255A CN107717255A (en) | 2018-02-23 |
| CN107717255B true CN107717255B (en) | 2019-12-17 |
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| CN112091533B (en) * | 2020-08-11 | 2021-08-24 | 江苏民威机电有限公司 | Production method of high-temperature-resistant grate bars |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202246778U (en) * | 2011-09-26 | 2012-05-30 | 山东万邦科贸有限公司 | Combined-type furnace grate |
| CN103849819B (en) * | 2012-12-04 | 2016-03-30 | 上海梅山钢铁股份有限公司 | A kind of sinter machine fire grate bar material and production method thereof and composite pouring unit |
| CN103256813A (en) * | 2013-04-19 | 2013-08-21 | 南京梅山冶金发展有限公司 | Furnace grate bar preventing bottom of sintering machine trolley from being damaged |
| WO2016159920A1 (en) * | 2015-03-30 | 2016-10-06 | Fadieiev Leonid Vasyliovych | Sieve with round bars |
| CN204555678U (en) * | 2015-04-10 | 2015-08-12 | 武钢集团昆明钢铁股份有限公司 | A kind of convenient grate bar of sintering machine trolley installed |
| CN205279740U (en) * | 2015-12-24 | 2016-06-01 | 黄石新兴管业有限公司 | Prevent sintering machine platform truck that fire grate bar and heat insulation part drop |
| CN206496646U (en) * | 2017-02-17 | 2017-09-15 | 靖江市玉盛特钢厂 | A kind of fire grate bar |
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