CN103801688B - RE permanent magnetic alloy continuous sintering plant - Google Patents
RE permanent magnetic alloy continuous sintering plant Download PDFInfo
- Publication number
- CN103801688B CN103801688B CN201210445514.9A CN201210445514A CN103801688B CN 103801688 B CN103801688 B CN 103801688B CN 201210445514 A CN201210445514 A CN 201210445514A CN 103801688 B CN103801688 B CN 103801688B
- Authority
- CN
- China
- Prior art keywords
- valve
- room
- chamber
- cylinder
- bin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a kind of RE permanent magnetic alloy continuous sintering plant, that preparation case, glove box, tunnel type are transmitted seal box, lock room, charging chamber, preheating chamber, heat de-airing room, agglomerating chamber and cooling chamber and be connected in series from valve by separation valve door between case and interventricular septum, by compressing rare earth permanent-magnet powder alloy through oxygen-free atmosphere transmission, complete heat de-airing, sintering and cooling processing in different rooms.Preparing case, glove box and tunnel type transmission seal box is bottom roller transmission, and other room transmission devices are arranged on the top of each room, and roller track is carried, and the roller of bin is suspended on transmission device track, and drawer type bin can load multiple magazine.Vertical rectangle heating furnace, hot zone width is narrow, homogeneous heating, and cooling is fast, and efficiency is high.Under significantly energy-conservation prerequisite, anaerobic transmission, continuous sintering improves properties of product, ensure that the conforming requirement of sintered rare earth permanent magnet alloy body magnetic property.
Description
Technical field
The present invention relates to a kind of continuous sintering plant of permanent-magnet rare-earth NdFeB alloy, belong to the technical field of permanent-magnet alloy treatment facility and technique.
Background technology
With R
2fe
14type B compound is the R-Fe-B system Fe-B rare-earth permanent magnet of principal phase, is more and more applied with the magnetic property that it is excellent, is widely used in the Magnetic resonance imaging of medical treatment, computer hard disc driver, the vibrating motor of mobile phone, the motor of hybrid vehicle, wind-driven generator etc.
Existing neodymium ferroboron rare earth permanent-magnetic alloy vacuum fritting is a kind of one-way fired furnace, and possess heating and rapid cooling function, some sintering furnaces are also accompanied with a protective atmosphere glove box.Because be that internally heated oven can only heat under vacuum conditions, firing rate is slow, and Long-Time Service temperature homogeneity is deteriorated; Because every heat all wants Repeat-heating and cooling procedure, inert gas consumption is many, and energy consumption greatly, pollutes heater and thermal insulation layer, and sintering furnace shortens service life greatly.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of continuous sintering plant of RE permanent magnetic alloy.
Agglomerating plant of the present invention is by the preparation case be arranged in order, glove box, sealing carrying case, and the lock room be arranged in order, charging chamber, preheating chamber, heat de-airing room, agglomerating chamber, cooling chamber, the transmission device of each room, loop line frame and vacuum extractor composition, each room is connected from valve by interventricular septum, and described sealing carrying case is connected with charging chamber; Each room transmission device is arranged on the top of each room, each outdoor is provided with the loop line frame with transmission device, loop line frame with into and out of holding transition frame to be connected, it is reciprocal that bin is suspended on transmission device cocycle, magazine is sent on bin through sealing carrying case, and preheating chamber, heat de-airing room and agglomerating chamber's outer wall are respectively equipped with water cooling tube or water-cooling jacket, vacuum-pumping pipeline, inert gas incoming line, safety valve and Pressure gauge.
Described preheating chamber, heat de-airing room and agglomerating chamber inside are respectively equipped with vertical rectangle heating furnace, and described heating furnace inwall is provided with thermal insulation layer, and heater is organized in thermal insulation layer inside more, often organize heater and are provided with a thermocouple, and temperature grouping controls; Described transmission device is arranged on outside heating furnace, and heating furnace top is provided with can the thermal insulation board of opening and closing left and right.
Separation valve door between described room is one-way sealing push-pull valve, comprise valve body, the second cylinder, multiple cylinder or oil cylinder, the first valve plate and forward and backward blind flange, wherein, the corresponding both sides of valve body are respectively arranged with forward and backward blind flange, and the outer top of front blind flange is provided with the second cylinder and cooling water pipe assembly, first valve plate parallel with other both sides is provided with in valve body, first valve plate is hung in valve body internal upper part by valve plate running gear, the cylinder rod cylinder head part of valve plate running gear and outside second cylinder is rigidly connected, the second roller and end guide rail thereof is provided with bottom first valve plate, first valve plate is welded with water cooling tube or chuck, water cooling tube or chuck are connected on two sealing rigidity cooling water pipe axles by the flexible pipe of cooling water pipe assembly, cooling water tubular axis is connected with the cylinder rod of the second cylinder, realize interlock, first valve plate displacement time and cooling water tubular axis geo-stationary, multiple cylinder or oil cylinder are connected locking first valve plate with the two ends of the first valve plate respectively, realize sealing.
Described cooling chamber sidewall is provided with the second motor, and there are bellows inside, and the side plate of bellows has multiple mozzle, and corresponding opposite side has heat exchanger, and heat exchanger air outlet is facing to air inlet, and blower fan is connected with the second motor shaft, and cooling locular wall periphery is provided with arc deflector; Be externally connected to pipeline of finding time, inert gas incoming line and safety valve pipeline; Vacuum-pumping pipeline is connected with vacuum extractor.
Described preheating chamber joins wax collecting tank as dewaxing room.
Described transmission device comprises the first motor, chain, gear pair, diaxon bearing, two closed slides, two group of first roller, two first sprocket wheels, second sprocket wheel and Chain plate, described two first sprocket wheels are arranged on and stretch out on the hinge axis outside housing through each room housing, be connected by chain between the first motor output shaft with the first sprocket wheel, diaxon bearing one end is arranged on the sprocket shaft in housing respectively, the axle parallel with hinge axis is connected with between the other end, this axle and hinge axis are separately installed with the gear pair cooperatively interacted, second sprocket wheel is arranged on the sprocket shaft in housing, two group of first roller be placed in two closed slides is connected by its roller shaft, roller shaft is provided with the Chain plate coordinated with the second sprocket wheel, the described Chain plate other end connects bin connecting rod.
Describedly on bearing block, be connected with latch plate, the latch plate other end connects the housing of each room, and during work, latch plate is stressed makes the second sprocket wheel and Chain plate compact siro spinning technology.
It is vacuum or protective atmosphere seal case that described preparation case, glove box and tunnel type transmit seal box, is respectively equipped with pipeline of finding time and connects vacuum plant, be provided with inert gas plenum pipeline and connect inert gas system; Be respectively equipped with separation valve door between case between adjacent two casees, the preparation case other end is provided with chamber door, transmit in seal box the bin being provided with manipulator and magazine being loaded charging chamber; Each case is provided with Pressure gauge and vacuum gauge, is connected with balanced valve pipeline between adjacent two casees, balances two casees pressure by balanced valve pipeline.
Between described case, separation valve door comprises valve housing, 3rd cylinder and inner the second valve plate arranged thereof, flap, connecting rod, 3rd roller, guide rail and collision block, described second valve plate is connected on flap by multiple connecting rod, guide rail is provided with in valve housing, flap is provided with the 3rd roller slided along guide rail, 3rd cylinder is placed in outside valve housing, its cylinder rod stretches in valve body and is connected with flap, collision block is placed on valve housing internal valve end cap, second valve plate is provided with cushion rubber near valve port side flange end, 3rd cylinder drives flap to move on guide roller track, second valve plate clashes into collision block, it is close to valve port side flange that connecting rod promotes the second valve plate, compression cushion rubber completes isolating seal effect.
Beneficial effect of the present invention:
1. the present invention is compared with existing vacuum sintering furnace, heating, sintering and cooling processing are decomposed in different vacuum chambers and completes, avoid each all Repeat-heating and the coolings of existing single chamber sintering furnace, the large efficiency that consumes energy is low, and there is heater and the contaminated problem of thermal insulation layer, effectively can solve the dewaxing problem of blank, under energy-conservation prerequisite, greatly improve the uniformity of production capacity and product, improve service life of equipment simultaneously, shorten the equipment maintenance time.
2. all arrange vertical rectangle heating furnace in preheating chamber of the present invention, heat de-airing room and agglomerating chamber, heating-up temperature grouping controls, and hot zone width is narrow, homogeneous heating, and cooling is fast, and efficiency is high.Under significantly energy-conservation prerequisite, anaerobic transmission, continuous sintering improves properties of product, ensure that the conforming requirement of sintered rare earth permanent magnet alloy body magnetic property.
3. loop line frame of the present invention arranges the transmission device identical with each cell structure, realize back and forth transmitting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.Fig. 2 is the sectional structure schematic diagram of heat de-airing room in Fig. 1.
Fig. 3 is that schematic diagram is looked on a left side of Fig. 2.
Fig. 4 is the structural representation of cooling chamber in Fig. 1.
Fig. 5 be in Fig. 1 interventricular septum from valve mechanism schematic diagram.
Fig. 6 is that schematic diagram is looked on a left side of Fig. 5.
Fig. 7 is the schematic top plan view of Fig. 5.
Fig. 8 prepares box structure schematic diagram in Fig. 1.
Fig. 9 is glove box structural representation in Fig. 1.
Figure 10 isolates valve mechanism schematic diagram between Fig. 1 raising middle flask.
In figure: 1, suspension type induction system; 2, bin; 3, inlet side transition frame; 4, room, inlet side door; 5,1# vacuum plant; 6, slightly valve is taken out; 7,1# slide valve pump; 8,1# lobe pump; 9,1# by-passing valve; 10, room is locked; 11, loading line; 12,1# Pressure gauge; 13, vacuum gauge; 14,1# separation valve door; 15, inert gas incoming line; 16, preheating chamber; 17, safety valve; 18, flange; 19, main valve; 20, diffusion pump; 21,2# lobe pump; 22,2# slide valve pump; 23,2# by-passing valve; 24,2# vacuum plant; 25,2# separation valve door; 26, heat de-airing room; 27,3# vacuum plant; 28,3# separation valve door; 29, agglomerating chamber; 30,4# vacuum plant; 31,4# separation valve door; 32,5# vacuum plant; 33, blower fan; 34, cooling chamber; 35, go out to hold room door; 36, go out to hold transition frame; 37, case is prepared; 38,6# separation valve door; 39, glove box; 40,7# separation valve door; 41, carrying case is sealed; 42, magazine; 43, manipulator; 44, charging chamber; 45,5# separation valve door; 46, safety valve connecting pipe flange; 47, flange is inflated; 48, bearing block; 49, the first sprocket wheel; 50, gear pair; 51, thermal insulation board; 52, water cooling tube; 53, the first roller, 54, guide rail; 55, to bleed pipe connecting flange; 56, upper thermal insulation layer; 57, thermocouple; 58, water cooled electrode; 59, side thermal insulation layer; 60, heater; 61, lower thermal insulation layer; 62, latch plate; 63, chain; 64, the first motor; 65, the second sprocket wheel; 66, the first cylinder; 67, optoelectronic switch; 68, the second motor; 69, blower fan; 70, heat exchanger; 71, mozzle; 72, deflector; 73, the second cylinder; 74, the first magnetic switch; 75, front blind flange; 76, valve body; 77, the second magnetic switch; 78, cylinder or oil cylinder; 79, the first cushion rubber; 80, the first valve plate; 81, thermal insulation board; 82, rear blind flange; 83, the second roller; 84, end guide rail; 85, win in succession; 86, cooling water tubular axis; 87, flexible pipe; 88, get on the right track; 89, hinge connecting plate; 90, chamber door; 91,1# vent valve pipeline; 92,1# electrical control cubicles; 93,1# observation window; 94,1# charging valve pipeline; 95,2# Pressure gauge; 96, Chain plate; 97,1# bottom roller wheel transmission device; 98, gloves flange assembly; 99,2# observation window; 100,2# electrical control cubicles; 101,2# vent valve pipeline; 102,2# charging valve pipeline; 103,3# Pressure gauge; 104,2# bottom roller wheel transmission device; 105, the 3rd cylinder; 106, the 3rd magnetic switch; 107, the 3rd roller; 108, track; 109, the second cushion rubber; 110, the second valve plate; 111, flap; 112, connecting rod; 113, collision block, 114, valve end cap.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment 1: as shown in Figure 1, RE permanent magnetic alloy continuous sintering plant of the present invention, by the preparation case 37 be arranged in order, glove box 39, sealing carrying case 41, and the lock room 10 be arranged in order, charging chamber 44, preheating chamber 16, heat de-airing room 26, agglomerating chamber 29, cooling chamber 34, the transmission device of each room, loop line frame and each room vacuum extractor composition, each room is connected from valve by interventricular septum, and described sealing carrying case 41 is connected with charging chamber 44; Each room transmission device is arranged on the top of each room, and each outdoor is provided with the loop line frame with transmission device, each room transmission device and loop line frame and on transmission device jointly form suspension type induction system 1; Loop line frame with into and out of holding transition frame 3,36 to be connected, it is reciprocal that bin 2 is suspended on transmission device cocycle, magazine 42 is sent on bin 2 through sealing carrying case 41, and preheating chamber 16, heat de-airing room 26 and agglomerating chamber 29 outer wall are respectively equipped with water cooling tube 52 or water-cooling jacket, vacuum-pumping pipeline, inert gas incoming line 15, safety valve 17,1# Pressure gauge 12 and vacuum gauge 13.
As shown in Figure 1, described preparation case 37, glove box 39 and tunnel type sealing carrying case 41 is vacuum or protective atmosphere seal case, being respectively equipped with pipeline of finding time and connecting its vacuum plant, being provided with inert gas plenum pipeline 11 for filling inert gas; Be provided with separation valve door between case between adjacent two casees, prepare case 37 other end and be provided with chamber door, being provided with the manipulator 43(manipulator 43 loaded on the bin 2 of charging chamber by magazine 42 in sealing carrying case 41 is existing structure); Each case is provided with Pressure gauge and vacuum gauge, is connected with balanced valve pipeline between each case, balances two casees pressure by balanced valve pipeline.In described preparation case 37, glove box 39 and tunnel type sealing carrying case 41 respectively with 1#, 2# bottom roller wheel transmission device 97,104, transmit magazine 42, described roller driving device is existing structure, is multi-roll drive mechanism arranged side by side.
As shown in Figure 8, described preparation case 37 is vertical sealed square chests, there is chamber door 90 one end, and there is 6# separation valve door 38 one end, casing has 1# vent valve pipeline 91,1# electrical control cubicles 92,1# observation window 93,1# charging valve pipeline 94 and balancing gas pressure pipeline and 2# Pressure gauge 95; Magazine 42 in casing is by the transmission of 1# bottom roller wheel transmission device 97.
As shown in Figure 9, described glove box 39 is vertical sealed square chests, one end is that 6# separation valve door 38 is connected with preparation case 37, there is 7# separation valve door 40 one end, casing there are gloves flange assembly 98,2# observation window 99,2# electrical control cubicles 100,2# vent valve pipeline 101,2# charging valve pipeline 102 and 3# Pressure gauge 103, in casing, are provided with 2# bottom roller wheel transmission device 104.
As shown in Figure 1, described tunnel type sealing carrying case 41 is vertical sealed casees, is connected, and is provided with vent valve pipeline, charging valve pipeline, Pressure gauge and bottom roller wheel transmission device with charging chamber 44 body side.Be provided with the magazine 42 code being lined up buttress in case and load manipulator 43 in suspension type bin 2; Bottom roller wheel transmission device is wherein that multiple running roller be set up in parallel realizes transmission.
As shown in Figure 10, the separation valve door between described case is the push-pull valve structure of one-way sealing.Comprise valve housing, 3rd cylinder 105 and inner the second valve plate 110 arranged thereof, flap 111, connecting rod 112, 3rd roller 107, guide rail 108 and collision block 113, described second valve plate 110 is connected on flap 111 by multiple connecting rod 112, guide rail 108 is provided with in valve housing, flap 111 is provided with the 3rd roller 107 slided along guide rail 108, 3rd cylinder 105 is placed in outside valve housing, its cylinder rod stretches in valve body and is connected with flap 111, collision block 113 is placed on valve housing internal valve end cap 114, second valve plate 110 is provided with cushion rubber 109 near valve port side flange 18 end, 3rd cylinder 105 drives flap 111 to move on guide rail 108, second valve plate 110 clashes into collision block 113, it is close to valve port side flange 18 that connecting rod 112 promotes the second valve plate 110, compression cushion rubber 109 completes isolating seal effect.3rd cylinder 105 is provided with the 3rd magnetic switch 106, shows the second valve plate 110 shift position.
Described preheating chamber 16, heat de-airing room 26 and agglomerating chamber 29 inside are respectively equipped with vertical rectangle heating furnace, as shown in Figure 2 and Figure 3, described heating furnace inwall is provided with thermal insulation layer (being made up of upper and lower thermal insulation layer 56,61 and both sides thermal insulation layer 59), there are many group heaters 60 thermal insulation layer inside, often organize heater 60 and be provided with a thermocouple 57, temperature grouping controls; Described transmission device is arranged on outside heating furnace, and heating furnace top is provided with can the thermal insulation board 51 of opening and closing left and right, and thermal insulation board 51 both sides connect the first cylinder 66 respectively; During work, the first cylinder 66 controls the folding of thermal insulation board 51, and bin 2 is placed in heating furnace, and one end is suspended on transmission device through thermal insulation board 51, and optoelectronic switch 67 is arranged on heating furnace sidewall, controls the walking position of bin 2.
As Fig. 2, shown in Fig. 3, transmission device described in this example comprises the first motor 64, chain 63, gear pair 50, diaxon bearing 48, two closed slides 54, two group of first roller 53, two first sprocket wheels 49, second sprocket wheel 65 and Chain plate 96, described two first sprocket wheels 49 are arranged on and stretch out on the hinge axis outside housing through each room housing, first motor 64 output shaft is connected by chain 63 with between the first sprocket wheel 49, diaxon bearing 48 one end is arranged on the sprocket shaft in housing respectively, the axle parallel with sprocket shaft is connected with between the other end, this axle and hinge axis are separately installed with the gear pair 50 cooperatively interacted, second sprocket wheel 65 is arranged on the sprocket shaft in housing, two group of first roller 53 be placed in two closed slides 54 is connected by its roller shaft, roller shaft is provided with the Chain plate 96 coordinated with the second sprocket wheel 65, described Chain plate 96 other end connects bin 2 connecting rod.Bearing block 48 is connected with latch plate 62, and latch plate 62 other end connects the housing of each room, stressedly during work makes the second sprocket wheel 65 and Chain plate 96 compact siro spinning technology.
Described lock room 10 is vertical cabinets, is the conversion chamber of vacuum and air, is provided with inert gas incoming line and 1# vacuum plant 5,1# vacuum plant 5 forms by slightly taking out valve 6,1# slide valve pump 7 or sliding vane rotary pump, 1# lobe pump 8,1# by-passing valve 9 and vacuum line.Bin 2 carries magazine 42 vertical hanging on transmission device, and driven by the second motor 68 reductor of transmission device, carried by transmission device, the position of optoelectronic switch display and control bin 2, the second motor 68 of transmission device realizes frequency control.
Described charging chamber 44 is vertical cabinets, one end has 5# separation valve door 45 to be connected with lock room 10, one end has 1# separation valve door 14 to be connected with preheating chamber 16, charging chamber 44 body side and tunnel type seal carrying case 41 and are connected, the magazine 42 that code is lined up buttress by the manipulator 43 in sealing carrying case 41 loads in suspension type bin 2, and charging chamber 44 is provided with inert gas incoming line.Bin 2 carries magazine 42 vertical hanging on transmission device, optoelectronic switch display and control bin 2 position, and the second motor 68 of transmission device realizes frequency control.
Described preheating chamber 16, heat de-airing room 26 and agglomerating chamber 29 inside are provided with vertical rectangle heating furnace, inside heating furnace is provided with, side, lower thermal insulation layer 56,59,61, thermal insulation layer inside is provided with many group heaters 60, draw outdoor by water cooled electrode 58 to be connected with heating power supply, often organizing heater 60 has a thermocouple 57 to be connected to temp. control computer in electrical control cubicles, connect the power output of power supply outside control heater, reach the subregional temperature of heating furnace and control; Transmission device is outside heating furnace, and heating furnace top is provided with the thermal insulation board 51 of opening and closing left and right, and thermal insulation board 51 both sides connect the first cylinder 66 respectively, promotion can be moved the thermal insulation board 51 of opening and closing left and right, and when bin is walked about, thermal insulation board 51 is opened, when bin is forbidden in heating furnace, thermal insulation board 51 is closed; Upper chamber's sidewall outside heating furnace is two closed slides 54 of transmission device, multiple first rollers 53 connecting bin 2 are suspended on guide rail 54, power is incorporated on indoor transmission seal sprocket shaft by sprocket wheel chain 63 by outdoor first motor 64 reductor, transfer torque on sprocket wheel 49 by the gear pair 50 that latch plate 62 is stressed, gear pair two ends are bearing blocks 48, the Chain plate 96 on bin 2 stirred by sprocket wheel 49, drives bin 2 to walk.
Described preheating chamber 16 is vertical cabinets, and outer wall is provided with water cooling tube 52, and pipe connecting flange 55 that it is bled connects 2# vacuum plant, and inflation flange 47 connects inert gas incoming line 15, safety valve connecting pipe flange 46 connection safety valve 17.Bin 2 carries magazine 42 vertical hanging and to get on the right track conveying at transmission device, the optoelectronic switch that the symmetrical side plate in preheating chamber casing top is provided with, display and control bin 2 position, frequency control.Wax collecting tank joined by described preheating chamber 16, and the external bag thermal insulation layer in room can be used as dewaxing room.
Each vacuum plant is existing structure, and 2#, 3# are identical with 4# vacuum plant 24,27,30 structure, forms by main valve 19, diffusion pump 20,2# lobe pump 21,2# slide valve pump 22,2# by-passing valve 23 and vacuum line; 1# vacuum plant is formed by slightly taking out valve 6,1# by-passing valve 9,1# slide valve pump 7 and 1# lobe pump 8; 5# vacuum plant is made up of slide valve pump, lobe pump and main valve.
As shown in Figure 2 and Figure 3, described heat de-airing room 26 is vertical cabinets, and outer wall has water cooling tube 52 or water-cooling jacket, is also connected with 3# vacuum plant 27, inert gas incoming line and safety valve.Bin 2 carries magazine 42 vertical hanging and to get on the right track conveying at its transmission device, is provided with correlation optoelectronic switch, display and control bin 2 position, frequency control outside the heating furnace of symmetrical side plate top, Heating Dehydrogenation room.
Described agglomerating chamber 29 is vertical cabinets, and outer wall has water cooling tube, is also connected with 4# vacuum plant 30, inert gas incoming line and safety valve.Bin 2 carries magazine 42 vertical hanging and to get on the right track conveying at transmission device, the optoelectronic switch that the symmetrical side plate in casing top is provided with, display and control bin 2 position, frequency control.
As shown in Figure 4, described cooling chamber 34 is vertical cabinets, outer wall is welded with water cooling tube, sidewall is provided with the second motor 68, and there are bellows inside, and the side plate of bellows is provided with multiple mozzle 71, corresponding opposite side has heat exchanger 70, heat exchanger 70 air outlet is facing to blower fan 33, and blower fan 33 is connected with the axle of the second motor 68, and cooling locular wall periphery is provided with arc deflector 72; Be externally connected to pipeline of finding time, inert gas incoming line and safety valve pipeline; Vacuum-pumping pipeline is connected with 5# vacuum plant 32; Bin 2 carries magazine 42 vertical hanging on transmission device, optoelectronic switch display and control bin 2 position, frequency control.
Separation valve door between described room is one-way sealing isolation push-pull valve, as shown in Figure 5-Figure 7, comprise valve body 76, second cylinder 73, multiple cylinder or oil cylinder 78, first valve plate 80 and forward and backward blind flange 75,82, wherein, the corresponding both sides of valve body 76 are respectively arranged with forward and backward blind flange 75,82, and the front outer top of blind flange 75 is provided with the second cylinder 73 and cooling water pipe assembly, first valve plate 80 parallel with other both sides is provided with in valve body 76, first valve plate 80 is hung in valve body 76 internal upper part by valve plate running gear, the cylinder rod cylinder head part of valve plate running gear and outside second cylinder 73 is rigidly connected, the second roller 83 and end guide rail 84 thereof is provided with bottom first valve plate 80, first valve plate 80 is welded with water cooling tube or chuck, water cooling tube or chuck are connected on two sealing rigidity cooling water pipe axles 86 by the flexible pipe 87 of cooling water pipe assembly, cooling water tubular axis 86 is connected with the cylinder rod of the second cylinder 73, realize interlock, when first valve plate 80 is shifted and cooling water tubular axis 86 geo-stationary, multiple cylinder or oil cylinder 78 are connected with the two ends of the first valve plate 80 respectively, for locking the first valve plate 80, second magnetic switch 77 is separately positioned on two row cylinders or oil cylinder 78, controls the position of the first valve plate 80.
Described valve plate running gear comprise be arranged at valve body upper end get on the right track 88, roller and hinge connecting plate 89, roller is placed in and gets on the right track in 88, along to get on the right track 88 slips, the first valve plate 80 to be hung in by hinge connecting plate 89 and to get on the right track on 88 by roller, realizes in the slip on 88 of getting on the right track.The first corresponding valve port side of valve plate 80 is provided with thermal insulation board 81.The cylinder rod of the second cylinder 73 drives the first valve plate 80 to be shifted, and controlled the position of the first valve plate 80 by the first magnetic switch 74 that the second cylinder 73 is arranged, described one-way sealing acts on the first valve plate 80 by multiple locking cylinder or cylinder rod and completes.
As shown in Figure 7, described first valve plate 80 is promoted by multiple cylinder or oil cylinder 78, ensures the first valve plate 80 uniform force, and the decrement that the first valve plate 80 is provided with sealing first cushion rubber 79, first cushion rubber 79 is large, ensures large scale valve port valve plate sealing property.When the effect of the forward and backward blind flange 75,82 of valve body 76 is maintenances, the first valve plate 80 can shift out from valve body 76 side.
According to heat treatment needs, this routine described preheating chamber also can be equipped with wax collecting tank as dewaxing room.
The course of work of the present invention is as follows:
Be illustrated referring to Fig. 1, check power electric, power gas source, circulating water for cooling and medium source of the gas.Check that all major-minor Plant in good condition can't harm, in running order.Adopt scatter operation pattern, equipment is made to meet production technology state and vacuum system starts and is in interlocking state, separation valve door between close chamber, separation valve door between case, glove box, tunnel type transmit seal box and charging chamber is in (oxygen content < 500PPm) in protective atmosphere, and other rooms are in vacuum state; Heating furnace internal heater is intact; Inert gas is set to predetermined value, and all the sensors is in the stable state of work.
Open chamber door 90 at atmosheric pressure, blank is loaded and prepares case 37, close chamber door 90, oxygen in filling with inert gas displacement case, oxygen content < 500PPm; Prepare case 37 and glove box 39 pressure balance, open 6# separation valve door 38, start transmission device, blank enters into glove box 39, closes 6# separation valve door 38; Pull out material at glove box 39, blank is loaded graphite magazine, magazine is fallen to piling up neatly code drained complete.
When glove box 39 and the pressure balance of sealing carrying case 41, open 7# separation valve door 40, start transmission device, become buttress magazine 42 to enter into sealing carrying case 41, close 7# separation valve door 40; Magazine 42 is waited for be transported to manipulator 43 in airtight carrying case before.
Open room, inlet side door 4 at atmosheric pressure, the bin 2 waited in inlet side transition frame 3 enters lock room 10, closes room, inlet side door 4; 1# vacuum system 5 vacuumizes lock room 10, as pressure≤5E-2Pa, recharges inert gas.
Charging chamber 44 does not have bin 2, charging chamber 44 and lock room 10 pressure balance, and open 5# separation valve door 45, bin 2 enters into charging chamber 44, closes 5# separation valve door 45; Magazine 42 loads in bin 2 by the manipulator 43 transmitted in seal box 41.
Preheating chamber 16 does not have bin 2, and preheating chamber 16 and charging chamber 44 pressure balance, open 1# separation valve door 14, and bin 2 enters preheating chamber 16, closes 1# separation valve door 14.2# vacuum plant 24 pairs of preheating chambers are evacuated down to 1Pa, are heated to 430 DEG C of insulations by the heating rate of technological requirement.
3# vacuum plant 27 pairs of heat de-airing rooms 26 vacuumize.When heat de-airing room 26 does not have bin 2, preheating chamber 16 and heat de-airing room 26 pressure balance, open 2# separation valve door 25, and bin 2 enters heat de-airing room 26, closes 2# separation valve door 25, the heating-up temperature of heat de-airing room 26 850 DEG C.
4# vacuum plant 30 pairs of agglomerating chamber 29 vacuumize.When agglomerating chamber 29 does not have bin 2, agglomerating chamber 29 and heat de-airing room 26 pressure balance, open 3# separation valve door 28, and bin 2 enters agglomerating chamber 29, closes 3# separation valve door 28, the heating-up temperature of agglomerating chamber 1080 DEG C.
5# vacuum plant 32 pairs of cooling chambers 34 vacuumize.When agglomerating chamber 29 and cooling chamber 34 pressure balance, cooling chamber 34 does not have bin 2, opens 4# separation valve door 31, and bin 2 enters cooling chamber 34, closes 4# separation valve door 31.Filling with inert gas, when pressure reaches 0.01Mpa, starts blower fan 33 and starts to force cooling to the magnet block in magazine and magazine.
Magnet block in magazine 42 and magazine 42 is cooled to less than 80 DEG C, and when cooling chamber 34 pressure is atmospheric pressure, open out end room door 35, bin 2 enters into out end transition frame 36.
Bin 2, through loop line frame, enters into inlet side transition frame 3, waits for.
Wherein the conveying of bin 2 between each room is driven by motor chain, power is incorporated into by seal transmission shaft on the power transmission shaft of vacuum chamber casing internal gear pair 50, be delivered on the first sprocket wheel 49 by bearing block 48, gear pair 50, stressed on bin 2 pulling axis by latch plate 62, the first roller 53 on bin 2 is walked on guide rail 54, and optoelectronic switch 67 is limit switches.
Aborning, control system can continuously scan status of equipment, and automatically runs according to the program preset.Whole operation completes in the man-machine interface of computer.
The display screen of electric control system or system can provide following information: the running status of vavuum pump, vacuum valve and vacuum line vacuum; Drive and show bin 2 and carry and running status; Drive and valve and fire door running status between display room; Show the vacuum of each independent vacuum chamber, pressure and heating-up temperature; Dielectric gas running status, safe valve state; Actual cooling water, power atmospheric pressure, dielectric gas are reported to the police; Alarming and managing; Show all relevant technological parameters (setting value and actual value); Parameters input; Historical process parameter/data display and storage; The all main components of equipment can the operation of transmission display screen.
Embodiment 2: this example is identical with embodiment 1 frame for movement, unlike: the restriction of parameter in the sintering process of this example, is specially:
(1) by compressing rare earth permanent-magnet powder alloy blank through isolated air-packing process, be sent to and prepare case 37, close chamber door 90, vacuumize or air in filling with inert gas displacement case; When preparing the pressure balance of case 37 and glove box 39, opening 6# separation valve door 38 between case, the blank of packaging is sent to glove box 39, close 6# separation valve door 38 between case; At glove box 39, blank is put into magazine 42, magazine 42 yards lines up buttress; When glove box 39 and the pressure balance sealing carrying case 41, opening 7# separation valve door 40 between case, by becoming the magazine 42 of buttress to be sent to sealing carrying case 41, closing 7# separation valve door 40 between case; Become the magazine 42 of buttress to be sent to manipulator 43 place with charging chamber 44 interface, by manipulator 43 magazine 42 loaded the bin 2 in charging chamber 44; In above-mentioned flow process, the oxygen content < 500PPm of each case and charging chamber;
(2) when charging chamber 44 and preheating chamber 16 pressure balance, open 1# separation valve door 14 between room, bin 2 is sent to preheating chamber 16, closes 1# separation valve door 14; Start to vacuumize, when vacuum is higher than 1Pa, start to be heated to 400 DEG C, be incubated 3 hours;
(3) heat de-airing room 26 is in vacuum state, heating-up temperature 400 DEG C, and open 2# separation valve door 25 between room, bin 2 is sent to heat de-airing room 26, closes 2# separation valve door 25; Heating in-furnace temperature gets multistage heating and heat preservation 2 hours from 450 DEG C ~ 800 DEG C, and vacuum reaches 3E-2Pa;
(4) agglomerating chamber is in vacuum state, heating-up temperature to 850 DEG C, and open 3# separation valve door 28 between room, bin 2 is sent to heat de-airing room 26, closes 3# separation valve door 28; After vacuum is higher than 3E-2Pa, continue to heat up, heating-up temperature is to 1080 DEG C of sintering, and vacuum reaches E-2Pa level;
(5) cooling chamber 34 is in vacuum state, and open 4# separation valve door 31 between room, bin 2 is sent to cooling chamber 34, closes 4# separation valve door 31; Inflated with nitrogen or argon gas, to 0.01MPa, start blower fan 33, cool, be cooled to less than 80 DEG C to the RE permanent magnetic alloy in magazine 42 and magazine 42; When chamber pressure balance is to atmospheric pressure, open out end room door 35, bin 2 is sent to out end transition frame 36, closes out end room door 35; Magazine 42 in bin 2 is taken out from bin 2;
(6) bin 2 enters inlet side transition frame 3 through loop line frame, lock room 10 Inflatable balance is to atmospheric pressure, drive end room door 4 into, bin 2 is sent to lock room 10, when room, inlet side, pass door 4 is evacuated down to 1Pa, and filling with inert gas, when lock room 10 and charging chamber 44 pressure balance, open 5# separation valve door 45 between room, bin 2 is sent to charging chamber 44 and waits for loading magazine, closes 5# separation valve door 45.
The present invention also can increase by (7) step, and can also be connected in series a timeliness room by separation valve door after cooling chamber, bin is sent to timeliness room, heating-up temperature 800 DEG C ~ 900 DEG C, 2 ~ 4 hours time; Heating-up temperature 450 DEG C ~ 550 DEG C, 2 ~ 4 hours time.
The present invention also can increase by (8) step, and can also be connected in series a cooling chamber 2 by separation valve door behind timeliness room, bin is sent to cooling chamber 2; Inflated with nitrogen or argon gas to 0.01 MPa ~ 0.19 MPa, start blower fan and cool the RE permanent magnetic alloy in magazine and magazine, be cooled to less than 80 DEG C; When chamber pressure balance is to atmospheric pressure, open out end room door 35, bin 2 is sent to out end transition frame 36, closes out end room door 35; Magazine 42 in bin 2 is taken out from bin 2.
Embodiment 3: this example as different from Example 2: the restriction of parameter in the sintering process of this example, is specially:
Wherein (2) step, when charging chamber 44 and preheating chamber 16 pressure balance, open 1# separation valve door 14 between room, bin 2 is sent to preheating chamber 16, closes 1# separation valve door 14; Start to vacuumize, when vacuum is higher than 1Pa, start to be heated to 500 DEG C, be incubated 1 hour;
(3) step, heat de-airing room 26 is in vacuum state, heating-up temperature 500 DEG C, and open 2# separation valve door 25 between room, bin 2 is sent to heat de-airing room 26, closes 2# separation valve door 25; Heating in-furnace temperature gets multistage heating and heat preservation 4 hours from 500 DEG C ~ 850 DEG C, and vacuum reaches 3E-2Pa.
Embodiment 4: this example as different from Example 2: the restriction of parameter in the sintering process of this example, is specially:
Wherein (2) step, when charging chamber 44 and preheating chamber 16 pressure balance, open 1# separation valve door 14 between room, bin 2 is sent to preheating chamber 16, closes 1# separation valve door 14; Start to vacuumize, when vacuum is higher than 1Pa, start to be heated to 450 DEG C, be incubated 2.5 hours;
(3) step, heat de-airing room 26 is in vacuum state, heating-up temperature 500 DEG C, and open 2# separation valve door 25 between room, bin 2 is sent to heat de-airing room 26, closes 2# separation valve door 25; Heating in-furnace temperature gets multistage heating and heat preservation 3 hours from 400 DEG C ~ 900 DEG C, and vacuum reaches 3E-2Pa;
Can be found out by above-described embodiment, rare earth alloy is by continuous sintering technique, and improve magnet performance, the automaticity of production improves greatly.
The those of ordinary skill of this specialty should be able to understand essence of the present invention, and recognizes that specific embodiment of the invention details can make various changes such as such as expanding multiple heat de-airing room, agglomerating chamber and cooling chamber in claims.
Claims (9)
1. a RE permanent magnetic alloy continuous sintering plant, it is characterized in that: by the preparation case be arranged in order, glove box, sealing carrying case, and the lock room be arranged in order, charging chamber, preheating chamber, heat de-airing room, agglomerating chamber, cooling chamber, the transmission device of each room, loop line frame and vacuum extractor composition, each room is connected from valve by interventricular septum, and described sealing carrying case is connected with charging chamber; Each room transmission device is arranged on the top of each room, each outdoor is provided with the loop line frame with transmission device, loop line frame with into and out of holding transition frame to be connected, it is reciprocal that bin is suspended on transmission device cocycle, magazine is sent on bin through sealing carrying case, and preheating chamber, heat de-airing room and agglomerating chamber's outer wall are respectively equipped with water cooling tube or water-cooling jacket, vacuum-pumping pipeline, inert gas incoming line, safety valve and Pressure gauge.
2. RE permanent magnetic alloy continuous sintering plant according to claim 1, it is characterized in that: described preheating chamber, heat de-airing room and agglomerating chamber inside are respectively equipped with vertical rectangle heating furnace, described heating furnace inwall is provided with thermal insulation layer, heater is organized in thermal insulation layer inside more, often organize heater and be provided with a thermocouple, temperature grouping controls; Described transmission device is arranged on outside heating furnace, and heating furnace top is provided with can the thermal insulation board of opening and closing left and right.
3. RE permanent magnetic alloy continuous sintering plant according to claim 1, it is characterized in that: described interventricular septum is one-way sealing push-pull valve from valve, comprise valve body, the second cylinder, multiple cylinder or oil cylinder, the first valve plate and forward and backward blind flange, wherein, the corresponding both sides of valve body are respectively arranged with forward and backward blind flange, and the outer top of front blind flange is provided with the second cylinder and cooling water pipe assembly, first valve plate parallel with other both sides is provided with in valve body, first valve plate is hung in valve body internal upper part by valve plate running gear, the cylinder rod cylinder head part of valve plate running gear and outside second cylinder is rigidly connected, the second roller and end guide rail thereof is provided with bottom first valve plate, first valve plate is welded with water cooling tube or chuck, water cooling tube or chuck are connected on two sealing rigidity cooling water pipe axles by the flexible pipe of cooling water pipe assembly, cooling water tubular axis is connected with the cylinder rod of the second cylinder, realize interlock, first valve plate displacement time and cooling water tubular axis geo-stationary, multiple cylinder or oil cylinder are connected locking first valve plate with the two ends of the first valve plate respectively, realize sealing.
4. RE permanent magnetic alloy continuous sintering plant according to claim 1, it is characterized in that: described cooling chamber sidewall is provided with the second motor, there are bellows inside, the side plate of bellows has multiple mozzle, corresponding opposite side has heat exchanger, heat exchanger air outlet is facing to air inlet, and blower fan is connected with the second motor shaft, and cooling locular wall periphery is provided with arc deflector; Be externally connected to pipeline of finding time, inert gas incoming line and safety valve pipeline; Vacuum-pumping pipeline is connected with vacuum extractor.
5. RE permanent magnetic alloy continuous sintering plant according to claim 1, is characterized in that: described preheating chamber joins wax collecting tank as dewaxing room.
6. RE permanent magnetic alloy continuous sintering plant according to claim 1, it is characterized in that: described transmission device comprises the first motor, chain, gear pair, diaxon bearing, two closed slides, two group of first roller, two first sprocket wheels, second sprocket wheel and Chain plate, described two first sprocket wheels are arranged on and stretch out on the hinge axis outside housing through each room housing, be connected by chain between the first motor output shaft with the first sprocket wheel, diaxon bearing one end is arranged on the sprocket shaft in housing respectively, the axle parallel with hinge axis is connected with between the other end, this axle and hinge axis are separately installed with the gear pair cooperatively interacted, second sprocket wheel is arranged on the sprocket shaft in housing, two group of first roller be placed in two closed slides is connected by its roller shaft, roller shaft is provided with the Chain plate coordinated with the second sprocket wheel, the described Chain plate other end connects bin connecting rod.
7. RE permanent magnetic alloy continuous sintering plant according to claim 6, is characterized in that: described diaxon bearing is connected with latch plate, and the latch plate other end connects the housing of each room, and during work, latch plate is stressed makes the second sprocket wheel and Chain plate compact siro spinning technology.
8. RE permanent magnetic alloy continuous sintering plant according to claim 1, it is characterized in that: described preparation case, glove box and transmission seal box are vacuum or protective atmosphere seal case, be respectively equipped with pipeline of finding time and connect vacuum plant, be provided with inert gas plenum pipeline and connect inert gas system; Be respectively equipped with separation valve door between case between adjacent two casees, the preparation case other end is provided with chamber door, transmit in seal box the bin being provided with manipulator and magazine being loaded charging chamber; Each case is provided with Pressure gauge and vacuum gauge, is connected with balanced valve pipeline between adjacent two casees, balances two casees pressure by balanced valve pipeline.
9. RE permanent magnetic alloy continuous sintering plant according to claim 8, it is characterized in that: between described case, separation valve door comprises valve housing, 3rd cylinder and inner the second valve plate arranged thereof, flap, connecting rod, 3rd roller, guide rail and collision block, described second valve plate is connected on flap by multiple connecting rod, guide rail is provided with in valve housing, flap is provided with the 3rd roller slided along guide rail, 3rd cylinder is placed in outside valve housing, its cylinder rod stretches in valve body and is connected with flap, collision block is placed on valve housing internal valve end cap, second valve plate is provided with cushion rubber near valve port side flange end, 3rd cylinder drives flap to move on guide roller track, second valve plate clashes into collision block, it is close to valve port side flange that connecting rod promotes the second valve plate, compression cushion rubber completes isolating seal effect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445514.9A CN103801688B (en) | 2012-11-08 | 2012-11-08 | RE permanent magnetic alloy continuous sintering plant |
| US14/075,732 US20140127072A1 (en) | 2012-11-08 | 2013-11-08 | Continuous sintering method for rare earth permanent magnetic alloy and equipment therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445514.9A CN103801688B (en) | 2012-11-08 | 2012-11-08 | RE permanent magnetic alloy continuous sintering plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103801688A CN103801688A (en) | 2014-05-21 |
| CN103801688B true CN103801688B (en) | 2015-09-16 |
Family
ID=50699347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210445514.9A Active CN103801688B (en) | 2012-11-08 | 2012-11-08 | RE permanent magnetic alloy continuous sintering plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103801688B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001921B (en) * | 2014-06-04 | 2015-10-28 | 宁波恒基永昕粉末冶金有限公司 | A kind of method for preparing powder metallurgy of part |
| JP6607368B2 (en) * | 2014-12-18 | 2019-11-20 | 大同特殊鋼株式会社 | Continuous vacuum sintering equipment |
| CN108947215A (en) * | 2018-09-29 | 2018-12-07 | 深圳市力晟智能科技有限公司 | A kind of inert gas shielding method of curve glass forming apparatus |
| CN109175574B (en) * | 2018-11-12 | 2024-02-27 | 金华市禾牧真空电子有限公司 | Full-automatic high vacuum brazing equipment for vacuum cup |
| CN110421161A (en) * | 2019-07-16 | 2019-11-08 | 宁波宁港永磁材料有限公司 | A kind of multi chamber vacuum continuous oven for the preparation of samarium cobalt permanent magnet body |
| CN110373517B (en) * | 2019-08-19 | 2023-12-12 | 合肥真萍电子科技有限公司 | Full-automatic high vacuum degassing furnace |
| CN110976858A (en) * | 2019-12-31 | 2020-04-10 | 赣州富尔特电子股份有限公司 | Furnace entering protection device |
| CN112556405B (en) * | 2020-12-14 | 2022-06-03 | 株洲瑞德尔智能装备有限公司 | Sintering furnace dewaxing structure and sintering furnace |
| CN112665393A (en) * | 2020-12-18 | 2021-04-16 | 合肥恒力装备有限公司 | Roller way type box furnace for high-temperature atmosphere sintering |
| CN112899578A (en) * | 2021-01-21 | 2021-06-04 | 牟昶宇 | Bolt preparation process |
| CN117722851A (en) * | 2024-02-07 | 2024-03-19 | 沈阳恒进真空科技有限公司 | Multi-chamber vacuum sintering furnace and continuous sintering system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09111309A (en) * | 1995-10-20 | 1997-04-28 | Hitachi Metals Ltd | Continuous sintering furnace |
| JP3479485B2 (en) * | 2000-02-10 | 2003-12-15 | 島津メクテム株式会社 | Continuous processing equipment |
| JP4576331B2 (en) * | 2005-12-28 | 2010-11-04 | 中外炉工業株式会社 | Continuous sintering furnace |
| CN201327292Y (en) * | 2008-09-12 | 2009-10-14 | 秦文隆 | Continuous-type vacuum-atmosphere sintering furnace |
| CN202943251U (en) * | 2012-11-08 | 2013-05-22 | 沈阳中北真空磁电科技有限公司 | Rare-earth permanent magnet alloy continuous sintering equipment |
-
2012
- 2012-11-08 CN CN201210445514.9A patent/CN103801688B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103801688A (en) | 2014-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103801688B (en) | RE permanent magnetic alloy continuous sintering plant | |
| CN103801693B (en) | RE permanent magnetic alloy flexible sintered process | |
| CN202943251U (en) | Rare-earth permanent magnet alloy continuous sintering equipment | |
| CN202943253U (en) | Rare-earth permanent magnet alloy hydrogen breaking continuous production equipment | |
| US20140127072A1 (en) | Continuous sintering method for rare earth permanent magnetic alloy and equipment therefor | |
| CN103805825B (en) | RE permanent magnetic alloy vacuum induction melting rapid hardening equipment | |
| CN103801692B (en) | RE permanent magnetic alloy flexible sintered equipment | |
| CN103805835B (en) | RE permanent magnetic alloy stoking processing method | |
| CN109097540B (en) | Parallel vacuum heat treatment equipment and vacuum heat treatment method | |
| CN202943252U (en) | Rare-earth permanent magnet alloy flexible sintering equipment | |
| CN107326155A (en) | A kind of rare earth permanent magnet vacuum-sintering heat treatment method and vacuum heat treatment equipment | |
| CN202945304U (en) | Vacuum-induction smelting and rapid hardening equipment for rare-earth permanent-magnet alloy | |
| CN107321977B (en) | Rare earth permanent magnet vacuum sintering method and vacuum sintering heat treatment equipment | |
| CN107879607A (en) | A kind of 3D bend glasses hot-bending machine and hot bending processing method | |
| CN108033670A (en) | A kind of hot bending processing method of 3D bend glasses hot-bending machine | |
| CN107902877A (en) | A kind of 3D bend glass hot-bending machines using vacuum displacement technology | |
| CN103801701B (en) | The flexible hydrogen of RE permanent magnetic alloy breaks equipment | |
| CN202943254U (en) | Rare-earth permanent magnet alloy flexible hydrogen breaking equipment | |
| CN202947462U (en) | Lanthanon permanent magnet alloy continuous sintering furnace | |
| CN107326156A (en) | A kind of Nd-Fe-B permanent magnetic vacuum-sintering heat treatment method and vacuum heat treatment equipment | |
| CN113587635A (en) | Continuous vacuum sintering furnace | |
| CN104729274B (en) | Transmission valve capable of being maintained quickly | |
| CN109158608B (en) | Vacuum hydrogen crushing production line and hydrogen crushing method | |
| CN103801700A (en) | Rare earth permanent magnetic alloy flexible hydrogen breaking process method | |
| CN101445861A (en) | Air-cooling equipment for external-circulation multi-heat exchanger furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Hunnan District Huiquan road Shenyang city Liaoning province 110168 No. 8 Patentee after: Shenyang Liuhoudi Electroplating Co., Ltd. Address before: Liu Houdi village in Sujiatun District of Shenyang City, Liaoning province 110112 fonggouxiang Patentee before: SHENYANG ZHONGBEI VACUUM TECH CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190102 Address after: 110168 No. 10-2 Huiquan East Road, Hunnan District, Shenyang City, Liaoning Province Patentee after: SHENYANG ZHONGBEI VACUUM DEVICE CO., LTD. Address before: 110168 No. 8 Huiquan East Road, Hunnan District, Shenyang City, Liaoning Province Patentee before: Shenyang Liuhoudi Electroplating Co., Ltd. |
|
| TR01 | Transfer of patent right |