CN204934610U - The burner hearth heater of MIM sintering furnace - Google Patents
The burner hearth heater of MIM sintering furnace Download PDFInfo
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- CN204934610U CN204934610U CN201520718549.4U CN201520718549U CN204934610U CN 204934610 U CN204934610 U CN 204934610U CN 201520718549 U CN201520718549 U CN 201520718549U CN 204934610 U CN204934610 U CN 204934610U
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Abstract
A burner hearth heater for MIM sintering furnace, belongs to kiln facility technology field.Comprise feed conveyor, draft glue discharging furnace body of heater, high, low-temperature sintering furnace body and cooling furnace body, low-temperature sintering stove burner hearth is served as a contrast by low-temperature sintering stove furnace bottom, behind low-temperature sintering stokehold, furnace wall lining and low-temperature sintering stove furnace roof lining enclose formation, high temperature sintering furnace burner hearth is served as a contrast by high temperature sintering furnace furnace bottom, before and after high temperature sintering furnace, furnace wall lining and high temperature sintering furnace furnace roof lining enclose formation, burner hearth heater comprises one group high, low-temperature sintering stove molybdenum filament heating arrangements, after one group of low-temperature sintering stove molybdenum filament heating arrangements is located at low-temperature sintering stokehold, furnace wall serves as a contrast towards the side of low-temperature sintering stove burner hearth, and be connected with external power source, one group of high temperature sintering furnace molybdenum filament heating arrangements is located at high temperature sintering furnace furnace bottom lining, before and after high temperature sintering furnace, furnace wall lining and high temperature sintering furnace furnace roof serve as a contrast towards the side of high temperature sintering furnace burner hearth, and be connected with external power source.Guarantee the uniformity of burner hearth heating-up temperature, meet sintering quality requirement.
Description
Technical field
The utility model belongs to kiln facility technology field, is specifically related to a kind of burner hearth heater of MIM sintering furnace.
Background technology
Aforesaid MIM sintering furnace refers in fact MIM workpiece sintering stove, and be also MIM product sintering furnace (as follows), MIM technology refers to metal dust injection molding technology, and MIM is english abbreviation, and English full name is: MetalinjectionMolding.Because MIM technology is as a kind of near-net-shape technology manufacturing high-quality precision component, thus there is the advantage that conventional powder metallurgical, machined and casting method cannot match in excellence or beauty with it, be embodied in: complex-shaped micro metal part can be produced as the production plastic products as little in weight greatly even larger to 500g to 0.1g, be typically generally made up of MIM technique as high-grade mobile phone (apple 6 and apple 7 etc.) housing common at present; Product each several part even tissue, dimensional accuracy is high and relative density is greater than 95%; Surface smoothness is good; Constant product quality, production efficiency is high, easily meet industrialized mass requirement; The material that adaptability for materials extensively such as adapts to can be cut down by ferrous alloy steel, stainless steel, nickel-base alloy, tungsten alloy, carbide alloy, titanium alloy, magnetic material, Kovar() alloy and fine ceramics, etc.Aforesaid MIM sintering furnace also claims MIM pedestal stove.
As is known in the industry, burner hearth heating-up temperature (namely burner hearth sintering temperature, as follows) distribution is more even, and just better, vice versa for the sintering quality of MIM workpiece.But, because the sintering temperature of MIM workpiece reaches about 1600-1650 DEG C, the uniformity requirement being thus difficult to make burner hearth sintering temperature to meet industry to expect, this situation suitability for industrialized production and be especially outstanding in horizontal sintering furnace.
The experiment done through the applicant shows, due to relative to molybdenum silicide heating element heater as molybdenum silicide heating rod, the temperature distribution evenness of molybdenum filament is impeccable, because utilize molybdenum filament as heating element heater, its distribution density in burner hearth can significantly improve, thus can obtain the sintering quality of desirable MIM workpiece.
Chinese patent Authorization Notice No. CN2033108U recommends to be had " a kind of HTHP molybdenum wire furnace ", can reach 1-4.4 × 10 at 1450-1500 DEG C and pressure
6work under Pascal's condition, its technical essential is: the alundum tube in the burner hearth being placed in box hat body of heater is wound around molybdenum filament, specifically can see the 2nd page the 3rd section, the description text of this patent.Although this patent formula gives, and molybdenum filament objectively can be cashed as the enlightenment of heating element heater the technique effect referred in its description.But, because this patent extracts metal or alloy for from complex mineral, and be vertical body of heater, thus particularly for the horizontal sintering furnace of sintering MIM workpiece, do not there is referential substance enlightenment for horizontal body of heater.Because usually combined by binder removal part, low-temperature sintering part, high temperature sintering part and cooling segment as complete MIM sintering furnace and complete MIM workpiece sintering stove, by low-temperature sintering part and high temperature sintering part by shaping for MIM workpiece sintering.But due to the combustion space of low-temperature sintering part and the combustion space of high temperature sintering part relatively large and comparatively tediously long, thus make the setting of molybdenum filament become very difficult, even thought to arrange by industry.Perhaps for the consideration to this technical factor, prior art mostly adopts traditional approach to arrange heating element heater in the corresponding two side of burner hearth with plate-like form, typical in Chinese invention patent application publication No. CN1352375A.With plate-like form, heating element heater is set in the both sides of the length direction of burner hearth and at least there is following drawback: one is because heating element heater cost is large, thus loses economy; They are two years old, temperature due to high temperature sintering part is significantly higher than the temperature of low-temperature sintering part, thus more harsh to the uniformity of fire box temperature, and be only not enough to make burner hearth top with the heating element heater being positioned at burner hearth both sides, the temperature of zone line of bottom reaches unanimity with the temperature near hearth biside wall region, namely there is negative and positive situation in fire box temperature, finally causes MIM workpiece to affect sintering quality because being heated irregular.
For above-mentioned prior art, be necessary to be improved, the applicant has done useful design for this reason, defines technical scheme described below, and carried out simulated test in the test center of the applicant taking under secrecy provision, result proves practicable.
Summary of the invention
Task of the present utility model is to provide a kind of uniformity and using contributing to ensureing burner hearth heating-up temperature to meet to require the sintering of MIM workpiece and ensures the burner hearth heater of the MIM sintering furnace of sintering quality.
Task of the present utility model has been come like this, a kind of burner hearth heater of MIM sintering furnace, described MIM sintering furnace comprises and being arranged in order from left to right and interconnected feed conveyor, draft glue discharging furnace body of heater, low-temperature sintering furnace body, high temperature sintering furnace body and cooling furnace body, the low-temperature sintering stove burner hearth of low-temperature sintering furnace body is served as a contrast by low-temperature sintering stove furnace bottom, after corresponding respectively to the front side of low-temperature sintering stove furnace bottom lining and the vertically disposed low-temperature sintering stokehold of rear side, furnace wall lining and the low-temperature sintering stove furnace roof lining of finding a place for top that is between the lining of behind low-temperature sintering stokehold furnace wall and furnace wall lining after being positioned at low-temperature sintering stokehold enclose formation, and in the front side of the length direction of low-temperature sintering furnace body, space state is provided with one group of low-temperature sintering furnace body electric circuit connection container, the high temperature sintering furnace burner hearth of high temperature sintering furnace body is served as a contrast by high temperature sintering furnace furnace bottom, correspond respectively to furnace wall lining before and after the front side of high temperature sintering furnace furnace bottom lining and the vertically disposed high temperature sintering furnace of rear side and find a place between the lining of before and after high temperature sintering furnace furnace wall and the high temperature sintering furnace furnace roof lining being positioned at the top of furnace wall lining before and after high temperature sintering furnace encloses formation, and in the front side of the length direction of high temperature sintering furnace body, space state is provided with one group of high temperature sintering furnace body electric circuit connection container, described burner hearth heater comprises one group of low-temperature sintering stove molybdenum filament heating arrangements and one group of high temperature sintering furnace molybdenum filament heating arrangements, the length direction that one group of low-temperature sintering stove molybdenum filament heating arrangements follows described low-temperature sintering stove burner hearth to be laid in behind described low-temperature sintering stokehold furnace wall lining towards the side of low-temperature sintering stove burner hearth with state one by one, and be connected with external power source circuit electrical in described one group of low-temperature sintering furnace body electric circuit connection container, the length direction that one group of high temperature sintering furnace molybdenum filament heating arrangements follows described high temperature sintering furnace burner hearth to be laid in described high temperature sintering furnace furnace bottom lining with state one by one, before and after high temperature sintering furnace, furnace wall lining and high temperature sintering furnace furnace roof serve as a contrast towards the side of high temperature sintering furnace burner hearth, and be connected with external power source circuit electrical in described one group of high temperature sintering furnace body electric circuit connection container.
In a specific embodiment of the present utility model, the quantity of one group of described low-temperature sintering furnace body electric circuit connection container is equal with the quantity of described one group of low-temperature sintering stove molybdenum filament heating arrangements, and one group of low-temperature sintering stove molybdenum filament heating arrangements respectively comprises low-temperature sintering stove molybdenum filament positioning support hook and low-temperature sintering stove molybdenum filament, the side in opposite directions that after low-temperature sintering stove molybdenum filament positioning support hook is fixed on described low-temperature sintering stokehold with the state corresponded to each other, furnace wall serves as a contrast, and three rows that the short transverse of furnace wall lining respectively has upper, middle and lower spaced apart behind low-temperature sintering stokehold, one end of low-temperature sintering stove molybdenum filament is drawn described low-temperature sintering stove burner hearth by the first busbar and is connect post with the first busbar be arranged on one group of described low-temperature sintering furnace body electric circuit connection container and fix, and the other end of low-temperature sintering molybdenum filament is drawn low-temperature sintering stove burner hearth by the second busbar and is connect post with the second busbar on same one of them low-temperature sintering furnace body electric circuit connection container be arranged in one group of low-temperature sintering furnace body electric circuit connection container and fix, the be laid in side in opposite directions and being linked up with by described low-temperature sintering stove molybdenum filament positioning support of furnace wall lining behind low-temperature sintering stokehold, the middle part of low-temperature sintering stove molybdenum filament limits.
In another specific embodiment of the present utility model, the top surface that furnace wall serves as a contrast behind described low-temperature sintering stokehold respectively offers at least one pair of busbar caulking groove, the first described busbar and the second busbar described busbar caulking groove that is lining with of furnace wall, low-temperature sintering stokehold behind low-temperature sintering stokehold in the lining of furnace wall is drawn described low-temperature sintering stove burner hearth and is connect post and the second busbar respectively with described first busbar in one of them the low-temperature sintering furnace body electric circuit connection container be arranged in one group of described low-temperature sintering furnace body electric circuit connection container and connects post and be electrically fixedly connected with, and be embedded with a First Transition connection busbar in the busbar caulking groove that after the low-temperature sintering stove behind low-temperature sintering stokehold in the lining of furnace wall, furnace wall is lining with and be connected busbar with one second transition, this is first years old, second transition connects busbar and described low-temperature sintering stove molybdenum filament is connected in series, and first, the end that second transition connects busbar connects the connection of busbar wiring pin by transition each other.
In another specific embodiment of the present utility model, described one group of low-temperature sintering furnace body electric circuit connection container is positioned at top and is respectively configured with a low-temperature sintering stove protective gas inflatable interface.
In another specific embodiment of the present utility model, first, second described busbar, First Transition connection busbar is connected busbar and is the rounded red copper bar of shape of cross section with the second transition.
Also have in a specific embodiment of the present utility model, the quantity of one group of described high temperature sintering furnace body electric circuit connection container is equal with the quantity of described one group of high temperature sintering furnace molybdenum filament heating arrangements, and described one group of high temperature sintering furnace molybdenum filament heating arrangements respectively comprises furnace wall lining molybdenum filament positioning support hook, furnace roof lining molybdenum filament positioning support hook, high temperature sintering furnace furnace bottom lining molybdenum filament, high temperature sintering furnace furnace wall lining molybdenum filament and high temperature sintering furnace furnace roof lining molybdenum filament, furnace wall lining molybdenum filament positioning support hook is fixed on the side in opposite directions of furnace wall lining before and after described high temperature sintering furnace with the state corresponded to each other, furnace roof lining molybdenum filament positioning support hook is fixed on the side of described high temperature sintering furnace furnace roof lining towards described high temperature sintering furnace burner hearth, one end of high temperature sintering furnace furnace bottom lining molybdenum filament is drawn high temperature sintering furnace burner hearth and first on one of them the high temperature sintering furnace body electric circuit connection container be arranged in one group of described high temperature sintering furnace body electric circuit connection container by the first conduction pitman and is conducted electricity pitman and connect post and fix, and the other end of high temperature sintering furnace furnace bottom lining molybdenum filament is drawn high temperature sintering furnace burner hearth and second on another high temperature sintering furnace body electric circuit connection container be arranged in one group of high temperature sintering furnace body electric circuit connection container by the second conduction pitman and is conducted electricity pitman and connect post and fix, the middle part of high temperature sintering furnace furnace bottom lining molybdenum filament is lining with the state forming one group of tortuous unit that the circulates described high temperature sintering furnace furnace bottom that is laid in, the two ends of the tortuous unit of each circulation lean out the surface of high temperature sintering furnace furnace bottom lining and hang on the lining molybdenum filament positioning support hook of described furnace wall under the state that against furnace wall lining before and after described high temperature sintering furnace, one end of high temperature sintering furnace furnace wall lining molybdenum filament draw high temperature sintering furnace burner hearth by the 3rd conduction pitman and be arranged in one group of described high temperature sintering furnace body electric circuit connection container described in the 3rd on another high temperature sintering furnace body electric circuit connection container conduct electricity pitman and connect post and fix, middle part is lining with and serves as a contrast molybdenum filament positioning support by described furnace wall and link up with the snakelike tortuous state furnace wall before and after described high temperature sintering furnace that is laid in and limit, and the other end of high temperature sintering furnace furnace wall lining molybdenum filament is connected with one end that high temperature sintering furnace furnace roof serves as a contrast molybdenum filament by the 4th conduction pitman, the middle part of high temperature sintering furnace furnace roof lining molybdenum filament with case of bending be laid in described high temperature sintering furnace furnace roof lining towards described high temperature sintering furnace burner hearth side and serve as a contrast molybdenum filament positioning support by described furnace roof and link up with and limit, and the other end of high temperature sintering furnace furnace roof lining molybdenum filament draw high temperature sintering furnace burner hearth by the 5th conduction pitman and be arranged in one group of described high temperature sintering furnace body electric circuit connection container described in the 4th on another high temperature sintering furnace body electric circuit connection container conduct electricity pitman and connect post and fix.
More of the present utility model and in a specific embodiment, high temperature sintering furnace forehearth wall liner before and after described high temperature sintering furnace in the lining of furnace wall is respectively offering conduction pitman resigning hole in the position corresponding to described first conduction pitman and the second conduction pitman, first, second conduction pitman is by way of the high temperature sintering furnace burner hearth described in the extraction of this conduction pitman resigning hole, the top surface that furnace wall serves as a contrast before and after high temperature sintering furnace respectively offers conduction pitman caulking groove with space state, described conduction pitman caulking groove on described 3rd conduction pitman and the high temperature sintering furnace forehearth wall liner of the 5th conduction pitman before and after high temperature sintering furnace in the lining of furnace wall draw high temperature sintering furnace burner hearth and respectively be arranged in one group of described high temperature sintering furnace body electric circuit connection container described in the described 3rd in another high temperature sintering furnace body electric circuit connection container conduct electricity pitman and connect post and the 4th and conduct electricity pitman and connect post and be electrically fixedly connected with, and be embedded with a pair First Transition connection contact rod in the conduction pitman caulking groove that after the high temperature sintering furnace before and after high temperature sintering furnace in the lining of furnace wall, furnace wall is lining with and be connected contact rod with a pair second transition, a pair First Transition connection contact rod and described high temperature sintering furnace furnace wall serve as a contrast molybdenum filament and are connected in series, and this connects the connection of contact rod wiring pin by First Transition each other to the end that First Transition connects contact rod, a pair second transition connect the same and high temperature sintering furnace furnace wall of contact rod and serve as a contrast molybdenum filament and be connected in series, and this connects the connection of contact rod wiring pin by second each other to the end that the second transition connects contact rod.
In an of the present utility model and then specific embodiment, described one group of high temperature sintering furnace body electric circuit connection container is positioned at top and is respectively configured with a high temperature sintering furnace protective gas bleed interface, and is respectively configured with a suction interface in bottom.
Of the present utility model again more and in a specific embodiment, after described low-temperature sintering stove furnace bottom lining, low-temperature sintering stokehold, before and after furnace wall lining, low-temperature sintering stove furnace roof lining, high temperature sintering furnace furnace bottom lining, high temperature sintering furnace, furnace wall lining and high temperature sintering furnace furnace roof lining are corundum brick.
In an again of the present utility model and then specific embodiment, the low-temperature sintering being provided with the surface being raised in low-temperature sintering stove furnace bottom lining on the surface of described low-temperature sintering stove furnace bottom lining with space state is furnace bed; The high temperature sintering being provided with the surface being raised in high temperature sintering furnace furnace bottom lining on the surface of described high temperature sintering furnace furnace bottom lining with space state is furnace bed.
The technical scheme that the utility model provides is owing to being heated low-temperature sintering stove furnace chamber and high temperature sintering furnace burner hearth respectively by low-temperature sintering stove molybdenum filament heating arrangements and high temperature sintering furnace molybdenum filament heating arrangements, thus can guarantee the uniformity of burner hearth heating-up temperature, meet the sintering quality requirement to MIM workpiece.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model MIM sintering furnace.
Fig. 2 is the schematic diagram that the low-temperature sintering stove molybdenum filament heating arrangements of burner hearth heater of the present utility model is arranged in the low-temperature sintering stove burner hearth of low-temperature sintering furnace body as shown in Figure 1.
Fig. 3 is the schematic diagram that the high temperature sintering furnace molybdenum filament heating arrangements of burner hearth heater of the present utility model is arranged in the high temperature sintering furnace burner hearth of high temperature sintering furnace body as shown in Figure 1.
Detailed description of the invention
In order to enable the auditor of Patent Office especially the public clearly understand technical spirit of the present utility model and beneficial effect, applicant will elaborate below by way of example, but not all the restriction to the utility model scheme to the description of embodiment, any according to being only pro forma but not substantial equivalent transformation and all should being considered as the technical solution of the utility model category done by the utility model design.
Everyly in the following description relate to upper and lower, left and right, the concept of directionality (or claim directionality) of front and rear is all for the location status residing for the figure be described, object is to facilitate public understanding, thus can not be understood as being particularly limited to the technical scheme that the utility model provides.
Refer to Fig. 1, give MIM sintering furnace (being MIM workpiece sintering stove), this MIM sintering furnace comprise be arranged in order from left to right and interconnected feed conveyor 1, draft glue discharging furnace body of heater 2, low-temperature sintering furnace body 3, high temperature sintering furnace body 4 and cooling furnace body 5.The function of feed conveyor 1 pushes in the draft glue discharging furnace burner hearth of draft glue discharging furnace body of heater 2 by the MIM workpiece awaiting coming unstuck, by the binding agent in draft glue discharging furnace body of heater 2 pairs of MIM workpiece as PVAI or PVA discharges, the scrap rubber gas of discharge by with draft glue discharging furnace body of heater 2 connect and the scrap rubber Flash Gas Compression Skid System 21 communicated with draft glue discharging furnace burner hearth processes rear qualified discharge.Because draft glue discharging furnace body of heater 2 and scrap rubber Flash Gas Compression Skid System 21 belong to prior art, such as can see proposed by the applicant and the notification number of Grant Patent Right for Invention be the description of CN101749717B, thus applicant repeats no more.Low-temperature sintering is carried out in the low-temperature sintering stove burner hearth 31 being introduced low-temperature sintering furnace body 3 by carrier by load bearing board as saggar or crucible by the MIM workpiece after draft glue discharging furnace body of heater 2 binder removal, high temperature sintering is carried out in the high temperature sintering furnace burner hearth 41 that semi-finished product MIM workpiece after low-temperature sintering enters high temperature sintering furnace body 4, enter after high temperature sintering cooling furnace body 5 lower the temperature, through cooling furnace body 5 lower the temperature after go out to lower the temperature furnace body 5 and through inspection after packaging.
Refer to Fig. 2 and Fig. 3, the low-temperature sintering stove burner hearth 31 of aforesaid low-temperature sintering furnace body 3 serves as a contrast 32 by low-temperature sintering stove furnace bottom, correspond respectively to low-temperature sintering stove furnace bottom serve as a contrast 32 front side and the vertically disposed low-temperature sintering stokehold of rear side after furnace wall serve as a contrast 33 and find a place for furnace wall behind low-temperature sintering stokehold and serve as a contrast between 33 and that after being positioned at low-temperature sintering stokehold, furnace wall serves as a contrast the top of 33 low-temperature sintering stove furnace roof and serve as a contrast 34 and enclose and form, and in the front side of the length direction of low-temperature sintering furnace body 3, space state is provided with one group of low-temperature sintering furnace body electric circuit connection container 35.The high temperature sintering furnace burner hearth 41 of aforesaid high temperature sintering furnace body 4 serves as a contrast 42 by high temperature sintering furnace furnace bottom, correspond respectively to high temperature sintering furnace furnace bottom serve as a contrast 42 front side and the vertically disposed high temperature sintering furnace of rear side before and after furnace wall serve as a contrast 43 and find a place for furnace wall before and after high temperature sintering furnace and serve as a contrast between 43 and be positioned at high temperature sintering furnace furnace roof that furnace wall before and after high temperature sintering furnace serves as a contrast the top of 43 and serve as a contrast 44 and enclose and form, and in the front side of the length direction of high temperature sintering furnace body 4, space state is provided with one group of high temperature sintering furnace body electric circuit connection container 45.Can be found out by the signal of Fig. 1: low-temperature sintering furnace body 3 has six unit to form, and is certainly not limited to six unit, high temperature sintering furnace body 4 has seven unit to form, and is certainly not limited to seven unit.According in this, aforesaid one group of low-temperature sintering furnace body electric circuit connection container 35 has six, and aforesaid one group of high temperature sintering furnace body electric circuit connection container 45 has seven.
Please see Fig. 2 and Fig. 3 by emphasis, technical essential as the technical scheme that the utility model provides: aforesaid burner hearth heater comprises one group of low-temperature sintering stove molybdenum filament heating arrangements 6 and one group of high temperature sintering furnace molybdenum filament heating arrangements 7, the length direction that one group of low-temperature sintering stove molybdenum filament heating arrangements 6 follows described low-temperature sintering stove burner hearth 31 to be laid in behind aforementioned low-temperature sintering stokehold furnace wall lining 33 towards the side of low-temperature sintering stove burner hearth 31 with state one by one, and be connected with external power source circuit electrical in aforesaid one group of low-temperature sintering furnace body electric circuit connection container 35, the length direction that one group of high temperature sintering furnace molybdenum filament heating arrangements 7 follows afore-said hot sintering furnace burner hearth 41 to be laid in described high temperature sintering furnace furnace bottom lining 42 with state one by one, before and after high temperature sintering furnace, furnace wall lining 43 and high temperature sintering furnace furnace roof lining 44 are towards the side of high temperature sintering furnace burner hearth 41, and be connected with external power source circuit electrical in aforesaid one group of high temperature sintering furnace body electric circuit connection container 45.
Due in the present embodiment, low-temperature sintering furnace body 3 has six unit i.e. six sections to form, therefore the quantity of one group of low-temperature sintering stove molybdenum filament heating arrangements 6 has six, same reason, high temperature sintering furnace body 4 has seven unit i.e. seven sections to form, and therefore the quantity of one group of high temperature sintering furnace molybdenum filament heating arrangements 7 has seven.In addition, according to the professional general knowledge of industry, no matter be low-temperature sintering furnace body 3 or high temperature sintering furnace body 4, in the sintering process of reality, the temperature of regional is controlled as according to technological requirement and is not quite similar.
Please see Fig. 2 by emphasis, the quantity of aforesaid one group of low-temperature sintering furnace body electric circuit connection container 35 is equal with the quantity of aforesaid one group of low-temperature sintering stove molybdenum filament heating arrangements 6, namely six are respectively had, and one group of low-temperature sintering stove molybdenum filament heating arrangements 6 respectively comprises low-temperature sintering stove molybdenum filament positioning support hook 61 and low-temperature sintering stove molybdenum filament 62, after low-temperature sintering stove molybdenum filament positioning support hook 61 is fixed on aforesaid low-temperature sintering stokehold with the state corresponded to each other, furnace wall serves as a contrast the side in opposite directions of 33, and the short transverse of furnace wall lining 33 respectively has upper, middle and lower spaced apart three to arrange (being certainly not limited to three rows) behind low-temperature sintering stokehold, one end of low-temperature sintering stove molybdenum filament 62 is drawn aforementioned low-temperature sintering stove burner hearth 31 by the first busbar 621 and is connect post 351 with the first busbar be arranged on aforesaid one group of low-temperature sintering furnace body electric circuit connection container 35 and fix, and the other end of low-temperature sintering molybdenum filament 62 is drawn low-temperature sintering stove burner hearth 31 and the second busbar on same one of them low-temperature sintering furnace body electric circuit connection container be arranged in one group of low-temperature sintering furnace body electric circuit connection container 35 by the second busbar 622 and is connect post 352 and fix, the middle part of low-temperature sintering stove molybdenum filament 62 with the tortuous state of regular circulation be laid in furnace wall lining 33 behind low-temperature sintering stokehold side in opposite directions and link up with 61 by aforementioned low-temperature sintering stove molybdenum filament positioning support and limit.Figure 2 illustrates the situation that low-temperature sintering stove molybdenum filament 62 reversed bending lays.In the present embodiment, the steelyard hook shape of low-temperature sintering stove molybdenum filament positioning support hook 61 substantially in measurement instrument category.
Continue to see Fig. 2, behind aforesaid low-temperature sintering stokehold furnace wall lining 33 top surface on respectively offer at least one pair of busbar caulking groove 331, aforesaid first busbar 621 and the second busbar 622 busbar caulking groove 331 that is lining with of furnace wall, low-temperature sintering stokehold behind low-temperature sintering stokehold in furnace wall lining 33 is drawn low-temperature sintering stove burner hearth 31 and is connect post 351 and the second busbar respectively with the first busbar in one of them the low-temperature sintering furnace body electric circuit connection container be arranged in aforesaid one group of low-temperature sintering furnace body electric circuit connection container 35 and connects post 352 and be electrically fixedly connected with, and be embedded with a First Transition connection busbar 623 in the busbar caulking groove 331 that after the low-temperature sintering stove behind low-temperature sintering stokehold in furnace wall lining 33, furnace wall is lining with and be connected busbar 624 with one second transition, this is first years old, second transition connects busbar 623,624 are connected in series with aforesaid low-temperature sintering stove molybdenum filament 62, and first, second transition connects busbar 623, the end of 624 connects busbar wiring pin 625 by transition each other and connects.The positive effect arranging first, second transition connection busbar 623,624 is to facilitate laying and facilitating inspection etc. of low-temperature sintering stove molybdenum filament 62.
Aforesaid one group of low-temperature sintering furnace body electric circuit connection container 35 is positioned at top and is respectively configured with a low-temperature sintering stove protective gas inflatable interface 353.Protective gas is introduced to low-temperature sintering stove protective gas inflatable interface 353, by one group of low-temperature sintering furnace body electric circuit connection container 35 by protective gas (not shown) introducing by the road low-temperature sintering burner hearth 31 by the pipeline be connected with protective gas supply source.Aforesaid protective gas supply source is as nitrogen pot, and therefore protective gas is essentially nitrogen.
In the present embodiment, aforesaid first, second busbar 621,622, First Transition connects busbar 623 and is connected busbar 624 with the second transition and is the rounded red copper bar of shape of cross section.
Please see Fig. 3 by emphasis, namely the quantity of aforesaid one group of high temperature sintering furnace body electric circuit connection container 45 is equal with the quantity of aforesaid one group of high temperature sintering furnace molybdenum filament heating arrangements 7 respectively has seven, and one group of high temperature sintering furnace molybdenum filament heating arrangements 7 respectively comprises furnace wall lining molybdenum filament positioning support hook 71, furnace roof lining molybdenum filament positioning support hook 72, high temperature sintering furnace furnace bottom lining molybdenum filament 73, high temperature sintering furnace furnace wall lining molybdenum filament 74 and high temperature sintering furnace furnace roof lining molybdenum filament 75, furnace wall lining molybdenum filament positioning support hook 71 is fixed on the side in opposite directions of furnace wall lining 43 before and after aforesaid high temperature sintering furnace with the state corresponded to each other, furnace roof lining molybdenum filament positioning support hook 72 is fixed on the side of afore-said hot sintering furnace furnace roof lining 44 towards high temperature sintering furnace burner hearth 41, one end of high temperature sintering furnace furnace bottom lining molybdenum filament 73 is drawn high temperature sintering furnace burner hearth 41 and first on one of them the high temperature sintering furnace body electric circuit connection container be arranged in aforesaid one group of high temperature sintering furnace body electric circuit connection container 45 by the first conduction pitman 731 and conduct electricity pitman to connect post 451 fixing, and the other end of high temperature sintering furnace furnace bottom lining molybdenum filament 73 is drawn high temperature sintering furnace burner hearth 41 and second on another high temperature sintering furnace body electric circuit connection container be arranged in one group of high temperature sintering furnace body electric circuit connection container 45 by the second conduction pitman 732 and conduct electricity pitman to connect post 452 fixing, the middle part of high temperature sintering furnace furnace bottom lining molybdenum filament 73 is laid on afore-said hot sintering furnace furnace bottom lining 42 with the state forming one group of tortuous unit that circulates, the two ends of the tortuous unit of each circulation lean out the surface of high temperature sintering furnace furnace bottom lining 42 and hang on the described furnace wall lining molybdenum filament positioning support hook 71 under the state that against furnace wall lining 43 before and after high temperature sintering furnace, one end of high temperature sintering furnace furnace wall lining molybdenum filament 74 is drawn high temperature sintering furnace burner hearth 41 and the 3rd on another high temperature sintering furnace body electric circuit connection container aforementioned be arranged in aforesaid one group of high temperature sintering furnace body electric circuit connection container 45 by the 3rd conduction pitman 741 and conduct electricity pitman to connect post 453 fixing, middle part to be laid in before and after aforesaid high temperature sintering furnace on furnace wall lining 43 with snakelike tortuous state and to serve as a contrast molybdenum filament positioning support by described furnace wall and links up with 71 and limit, and the other end of high temperature sintering furnace furnace wall lining molybdenum filament 74 is connected with one end that high temperature sintering furnace furnace roof serves as a contrast molybdenum filament 75 by the 4th conduction pitman 742, the middle part of high temperature sintering furnace furnace roof lining molybdenum filament 75 with case of bending be laid in afore-said hot sintering furnace furnace roof lining 44 towards high temperature sintering furnace burner hearth 41 side and serve as a contrast molybdenum filament positioning support by furnace roof and link up with 72 and limit, and the other end of high temperature sintering furnace furnace roof lining molybdenum filament 75 draw high temperature sintering furnace burner hearth 41 by the 5th conduction pitman 751 and be arranged in one group of high temperature sintering furnace body electric circuit connection container 45 described in the 4th on another high temperature sintering furnace body electric circuit connection container conduct electricity pitman to connect post 454 fixing.
Above mentioned snakelike complications are the complications that U-shaped and n font replace in the present embodiment, certainly not definitely limit this tortuous state (form).
Continue to see Fig. 3, high temperature sintering furnace forehearth wall liner before and after aforesaid high temperature sintering furnace in furnace wall lining 43 is respectively offering conduction pitman resigning hole (not shown) in the position corresponding to aforementioned first conduction pitman 731 and the second conduction pitman 732, first, second conduction pitman 731,732 draw aforesaid high temperature sintering furnace burner hearth 41 by way of this conduction pitman resigning hole, before and after high temperature sintering furnace furnace wall lining 43 top surface on respectively offer conduction pitman caulking groove 431 with space state, described conduction pitman caulking groove 431 on aforesaid 3rd conduction pitman 741 and the high temperature sintering furnace forehearth wall liner of the 5th conduction pitman 751 before and after high temperature sintering furnace in furnace wall lining 43 is drawn high temperature sintering furnace burner hearth 41 and is conducted electricity pitman respectively with the 3rd in another high temperature sintering furnace body electric circuit connection container aforementioned be arranged in one group of high temperature sintering furnace body electric circuit connection container 45 and connects post 453 and the 4th and conduct electricity pitman and connect post 454 and be electrically fixedly connected with, and be embedded with a pair First Transition connection contact rod 743 in the conduction pitman caulking groove 431 that after the high temperature sintering furnace before and after high temperature sintering furnace in furnace wall lining 43, furnace wall is lining with and be connected contact rod 744 with a pair second transition, a pair First Transition connection contact rod 743 serves as a contrast molybdenum filament 74 with aforesaid high temperature sintering furnace furnace wall and is connected in series, and this is connected by First Transition connection contact rod wiring pin 7431 each other to the end that First Transition connects contact rod 743, and a pair second transition connect the same and high temperature sintering furnace furnace wall of contact rod 744 and serve as a contrast molybdenum filament 74 and be connected in series, and this is connected by the second connection contact rod wiring pin 7441 each other to the end that the second transition connects contact rod 744.A pair First Transition is set and connects the object of contact rod 743 and a pair second transition connection contact rods 744 as the description first, second transition being connected to busbar 623,624.
Aforesaid one group of high temperature sintering furnace body electric circuit connection container 45 is positioned at top and is respectively configured with a high temperature sintering furnace protective gas bleed interface 455, and is respectively configured with a suction interface 456 in bottom.The function of high temperature sintering furnace protective gas bleed interface 45 is as the description to low-temperature sintering stove protective gas inflatable interface 353; and suction interface 456 is for vacuumizing to high temperature sintering furnace burner hearth 41, be connected to suction interface 456 and vacuum extractor as between vavuum pump or similar device by vacuum-pumping pipeline in a state of use.
In the present embodiment, the aforementioned low-temperature sintering stove furnace bottom illustrated by Fig. 2 and Fig. 3 serves as a contrast 32, furnace wall serves as a contrast 33 behind low-temperature sintering stokehold, low-temperature sintering stove furnace roof serves as a contrast 34, high temperature sintering furnace furnace bottom serves as a contrast 42, before and after high temperature sintering furnace furnace wall serve as a contrast 43 and high temperature sintering furnace furnace roof serve as a contrast 44 and be corundum brick.And also show in figs. 2 and 3 on the surface of low-temperature sintering stove furnace bottom lining 32 with the low-temperature sintering furnace bed 321 being raised in the surface of low-temperature sintering stove furnace bottom lining 32 that space state is arranged; Be provided with the high temperature sintering furnace bed 421 on the surface being raised in high temperature sintering furnace furnace bottom lining 42 with space state on the surface of high temperature sintering furnace furnace bottom lining 42.
Although applicant is at one of them the low-temperature sintering stove molybdenum filament heating arrangements that foregoing merely illustrates in one group of low-temperature sintering stove molybdenum filament heating arrangements 6 and one of them the high temperature sintering furnace molybdenum filament heating arrangements merely illustrated in one group of high temperature sintering furnace molybdenum filament heating arrangements 7, but technical puzzlement can't be produced to the understanding of other low-temperature sintering stove molybdenum filament heating arrangements and other high temperature sintering furnace molybdenum filament heating arrangements, because all the other five the low-temperature sintering stove molybdenum filament heating arrangements in one group of low-temperature sintering stove molybdenum filament heating arrangements 6 in the present embodiment and all the other six the high temperature sintering furnace molybdenum filament heating arrangements in one group of high temperature sintering furnace molybdenum filament heating arrangements 7 can be known completely by inference according to the reason of drawing inferences about other cases from one instance.
In sum, the technical scheme that the utility model provides owing in a creative way molybdenum filament to be applied to the burner hearth of sintering furnace under the prerequisite overcoming the technology prejudice in prior art, thus can cash the technique effect recorded in the superincumbent technique effect hurdle of applicant faithfully.
Claims (10)
1. the burner hearth heater of a MIM sintering furnace, described MIM sintering furnace comprises and being arranged in order from left to right and interconnected feed conveyor (1), draft glue discharging furnace body of heater (2), low-temperature sintering furnace body (3), high temperature sintering furnace body (4) and cooling furnace body (5), the low-temperature sintering stove burner hearth (31) of low-temperature sintering furnace body (3) serves as a contrast (32) by low-temperature sintering stove furnace bottom, furnace wall lining (33) and find a place for low-temperature sintering stove furnace roof that is behind low-temperature sintering stokehold between furnace wall lining (33) and the top of furnace wall lining (33) after being positioned at low-temperature sintering stokehold and serve as a contrast (34) and enclose formation after corresponding respectively to the low-temperature sintering stove furnace bottom lining front side of (32) and the vertically disposed low-temperature sintering stokehold of rear side, and in the front side of the length direction of low-temperature sintering furnace body (3), space state is provided with one group of low-temperature sintering furnace body electric circuit connection container (35), the high temperature sintering furnace burner hearth (41) of high temperature sintering furnace body (4) serves as a contrast (42) by high temperature sintering furnace furnace bottom, correspond respectively to furnace wall lining (43) before and after the high temperature sintering furnace furnace bottom lining front side of (42) and the vertically disposed high temperature sintering furnace of rear side and find a place for before and after high temperature sintering furnace between furnace wall lining (43) and the high temperature sintering furnace furnace roof being positioned at the top of furnace wall lining (43) before and after high temperature sintering furnace serves as a contrast (44) encloses formation, and in the front side of the length direction of high temperature sintering furnace body (4), space state is provided with one group of high temperature sintering furnace body electric circuit connection container (45), it is characterized in that described burner hearth heater comprises one group of low-temperature sintering stove molybdenum filament heating arrangements (6) and one group of high temperature sintering furnace molybdenum filament heating arrangements (7), the length direction that one group of low-temperature sintering stove molybdenum filament heating arrangements (6) follows described low-temperature sintering stove burner hearth (31) to be laid in behind described low-temperature sintering stokehold furnace wall lining (33) towards side of low-temperature sintering stove burner hearth (31) with state one by one, and be connected with external power source circuit electrical in described one group of low-temperature sintering furnace body electric circuit connection container (35), the length direction that one group of high temperature sintering furnace molybdenum filament heating arrangements (7) follows described high temperature sintering furnace burner hearth (41) to be laid in described high temperature sintering furnace furnace bottom lining (42) with state one by one, before and after high temperature sintering furnace, furnace wall lining (43) and high temperature sintering furnace furnace roof serve as a contrast (44) side towards high temperature sintering furnace burner hearth (41), and be connected with external power source circuit electrical in described one group of high temperature sintering furnace body electric circuit connection container (45).
2. the burner hearth heater of MIM sintering furnace according to claim 1, it is characterized in that the quantity of one group of described low-temperature sintering furnace body electric circuit connection container (35) is equal with the quantity of described one group of low-temperature sintering stove molybdenum filament heating arrangements (6), and one group of low-temperature sintering stove molybdenum filament heating arrangements (6) respectively comprises low-temperature sintering stove molybdenum filament positioning support hook (61) and low-temperature sintering stove molybdenum filament (62), after low-temperature sintering stove molybdenum filament positioning support hook (61) is fixed on described low-temperature sintering stokehold with the state corresponded to each other, furnace wall serves as a contrast the side in opposite directions of (33), and three rows that the short transverse of furnace wall lining (33) respectively has upper, middle and lower spaced apart behind low-temperature sintering stokehold, one end of low-temperature sintering stove molybdenum filament (62) is drawn described low-temperature sintering stove burner hearth (31) by the first busbar (621) and is connect post (351) with the first busbar be arranged on one group of described low-temperature sintering furnace body electric circuit connection container (35) and fix, and the other end of low-temperature sintering molybdenum filament (62) draws low-temperature sintering stove burner hearth (31) and the second busbar on same one of them low-temperature sintering furnace body electric circuit connection container be arranged in one group of low-temperature sintering furnace body electric circuit connection container (35) by the second busbar (622), and to connect post (352) fixing, the middle part of low-temperature sintering stove molybdenum filament (62) be laid in furnace wall lining (33) behind low-temperature sintering stokehold side in opposite directions and link up with (61) by described low-temperature sintering stove molybdenum filament positioning support and limit.
3. the burner hearth heater of MIM sintering furnace according to claim 2, the top surface that it is characterized in that behind described low-temperature sintering stokehold furnace wall lining (33) respectively offers at least one pair of busbar caulking groove (331), described the first busbar (621) and the second busbar (622) the described busbar caulking groove (331) that is lining with of furnace wall, low-temperature sintering stokehold behind low-temperature sintering stokehold in furnace wall lining (33) is drawn described low-temperature sintering stove burner hearth (31) and is connect post (351) and the second busbar respectively with described first busbar in one of them the low-temperature sintering furnace body electric circuit connection container be arranged in one group of described low-temperature sintering furnace body electric circuit connection container (35) and connects post (352) and be electrically fixedly connected with, and be embedded with First Transition connection busbar (623) in the busbar caulking groove (331) that after the low-temperature sintering stove behind low-temperature sintering stokehold in furnace wall lining (33), furnace wall is lining with and be connected busbar (624) with one second transition, this is first years old, second transition connects busbar (623,624) be connected in series with described low-temperature sintering stove molybdenum filament (62), and first, second transition connects busbar (623,624) end connects busbar wiring pin (625) by transition each other and connects.
4. the burner hearth heater of the MIM sintering furnace according to claim 1 or 2 or 3, is characterized in that going up described one group of low-temperature sintering furnace body electric circuit connection container (35) and being positioned at top being respectively configured with low-temperature sintering stove protective gas inflatable interface (353).
5. the burner hearth heater of MIM sintering furnace according to claim 3, is characterized in that described first, second busbar (621,622), First Transition connection busbar (623) are connected busbar (624) and are the rounded red copper bar of shape of cross section with the second transition.
6. the burner hearth heater of MIM sintering furnace according to claim 1, it is characterized in that the quantity of one group of described high temperature sintering furnace body electric circuit connection container (45) is equal with the quantity of described one group of high temperature sintering furnace molybdenum filament heating arrangements (7), and described one group of high temperature sintering furnace molybdenum filament heating arrangements (7) respectively comprises furnace wall lining molybdenum filament positioning support hook (71), furnace roof lining molybdenum filament positioning support hook (72), high temperature sintering furnace furnace bottom lining molybdenum filament (73), high temperature sintering furnace furnace wall lining molybdenum filament (74) and high temperature sintering furnace furnace roof lining molybdenum filament (75), furnace wall lining molybdenum filament positioning support hook (71) is fixed on the side in opposite directions of furnace wall lining (43) before and after described high temperature sintering furnace with the state corresponded to each other, furnace roof lining molybdenum filament positioning support hook (72) is fixed on the side of described high temperature sintering furnace furnace roof lining (44) towards described high temperature sintering furnace burner hearth (41), one end of high temperature sintering furnace furnace bottom lining molybdenum filament (73) is drawn high temperature sintering furnace burner hearth (41) and first on one of them the high temperature sintering furnace body electric circuit connection container being arranged in one group of described high temperature sintering furnace body electric circuit connection container (45) by the first conduction pitman (731) and conduct electricity pitman to connect post (451) fixing, and the other end of high temperature sintering furnace furnace bottom lining molybdenum filament (73) is drawn high temperature sintering furnace burner hearth (41) and second on another high temperature sintering furnace body electric circuit connection container being arranged in one group of high temperature sintering furnace body electric circuit connection container (45) by the second conduction pitman (732) and conduct electricity pitman to connect post (452) fixing, the middle part of high temperature sintering furnace furnace bottom lining molybdenum filament (73) is laid on described high temperature sintering furnace furnace bottom lining (42) with the state forming one group of tortuous unit that circulates, the two ends of the tortuous unit of each circulation lean out the surface of high temperature sintering furnace furnace bottom lining (42) and hang on described furnace wall lining molybdenum filament positioning support hook (71) under the state that against furnace wall lining (43) before and after described high temperature sintering furnace, one end of high temperature sintering furnace furnace wall lining molybdenum filament (74) is drawn high temperature sintering furnace burner hearth (41) and the 3rd on another high temperature sintering furnace body electric circuit connection container described being arranged in one group of described high temperature sintering furnace body electric circuit connection container (45) by the 3rd conduction pitman (741) and conduct electricity pitman to connect post (453) fixing, middle part is upper and serve as a contrast molybdenum filament positioning support by described furnace wall and link up with (71) and limit with snakelike tortuous state furnace wall lining (43) before and after described high temperature sintering furnace that is laid in, and the other end of high temperature sintering furnace furnace wall lining molybdenum filament (74) is connected with one end that high temperature sintering furnace furnace roof serves as a contrast molybdenum filament (75) by the 4th conduction pitman (742), the middle part of high temperature sintering furnace furnace roof lining molybdenum filament (75) with case of bending be laid in described high temperature sintering furnace furnace roof lining (44) towards described high temperature sintering furnace burner hearth (41) side and serve as a contrast molybdenum filament positioning support by described furnace roof and link up with (72) and limit, and the other end of high temperature sintering furnace furnace roof lining molybdenum filament (75) is drawn high temperature sintering furnace burner hearth (41) and the 4th on another high temperature sintering furnace body electric circuit connection container described being arranged in one group of described high temperature sintering furnace body electric circuit connection container (45) by the 5th conduction pitman (751) and conduct electricity pitman to connect post (454) fixing.
7. the burner hearth heater of MIM sintering furnace according to claim 6, to it is characterized in that on the high temperature sintering furnace forehearth wall liner in before and after described high temperature sintering furnace furnace wall lining (43) and respectively to offer conduction pitman resigning hole in the position corresponding to described first conduction pitman (731) and the second conduction pitman (732), first, second conduction pitman (731,732) by way of the high temperature sintering furnace burner hearth (41) described in the extraction of this conduction pitman resigning hole, before and after high temperature sintering furnace furnace wall lining (43) top surface on respectively offer conduction pitman caulking groove (431) with space state, described conduction pitman caulking groove (431) on described 3rd conduction pitman (741) and the high temperature sintering furnace forehearth wall liner of the 5th conduction pitman (751) before and after high temperature sintering furnace in furnace wall lining (43) draws high temperature sintering furnace burner hearth (41) and the pitman that conducts electricity with the described 3rd in another high temperature sintering furnace body electric circuit connection container described be arranged in one group of described high temperature sintering furnace body electric circuit connection container (45) respectively connects post (453) and the 4th conducts electricity pitman and connect post (454) and be electrically fixedly connected with, and be embedded with a pair First Transition connection contact rod (743) in the conduction pitman caulking groove (431) that after the high temperature sintering furnace before and after high temperature sintering furnace in furnace wall lining (43), furnace wall is lining with and be connected contact rod (744) with a pair second transition, a pair First Transition connection contact rod (743) serves as a contrast molybdenum filament (74) with described high temperature sintering furnace furnace wall and is connected in series, and this connects contact rod wiring pin (7431) connection by First Transition each other to the end that First Transition connects contact rod (743), a pair second transition connect the same and high temperature sintering furnace furnace wall of contact rod (744) and serve as a contrast molybdenum filament (74) and be connected in series, and this connects contact rod wiring pin (7441) connection by second each other to the end that the second transition connects contact rod (744).
8. the burner hearth heater of the MIM sintering furnace according to claim 1 or 6 or 7; it is characterized in that going up described one group of high temperature sintering furnace body electric circuit connection container (45) and being positioned at top being respectively configured with high temperature sintering furnace protective gas bleed interface (455), and be respectively configured with a suction interface (456) in bottom.
9. the burner hearth heater of MIM sintering furnace according to claim 1, after it is characterized in that described low-temperature sintering stove furnace bottom lining (32), low-temperature sintering stokehold, before and after furnace wall lining (33), low-temperature sintering stove furnace roof lining (34), high temperature sintering furnace furnace bottom lining (42), high temperature sintering furnace, furnace wall lining (43) and high temperature sintering furnace furnace roof lining (44) are corundum brick.
10. the burner hearth heater of the MIM sintering furnace according to claim 1 or 9, is characterized in that the low-temperature sintering furnace bed (321) being provided with the surface being raised in low-temperature sintering stove furnace bottom lining (32) on the surface of described low-temperature sintering stove furnace bottom lining (32) with space state; Be provided with the high temperature sintering furnace bed (421) on the surface being raised in high temperature sintering furnace furnace bottom lining (42) with space state on the surface of described high temperature sintering furnace furnace bottom lining (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520718549.4U CN204934610U (en) | 2015-09-17 | 2015-09-17 | The burner hearth heater of MIM sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520718549.4U CN204934610U (en) | 2015-09-17 | 2015-09-17 | The burner hearth heater of MIM sintering furnace |
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| CN204934610U true CN204934610U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520718549.4U Withdrawn - After Issue CN204934610U (en) | 2015-09-17 | 2015-09-17 | The burner hearth heater of MIM sintering furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149586A (en) * | 2015-09-17 | 2015-12-16 | 苏州汇科机电设备有限公司 | Hearth heating device of MIM sintering furnace |
-
2015
- 2015-09-17 CN CN201520718549.4U patent/CN204934610U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149586A (en) * | 2015-09-17 | 2015-12-16 | 苏州汇科机电设备有限公司 | Hearth heating device of MIM sintering furnace |
| CN105149586B (en) * | 2015-09-17 | 2017-03-29 | 苏州汇科机电设备有限公司 | The burner hearth heater of MIM sintering furnaces |
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Granted publication date: 20160106 Effective date of abandoning: 20170329 |