CN1023689C - vacuum quick quenching furnace - Google Patents
vacuum quick quenching furnace Download PDFInfo
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- CN1023689C CN1023689C CN 92105431 CN92105431A CN1023689C CN 1023689 C CN1023689 C CN 1023689C CN 92105431 CN92105431 CN 92105431 CN 92105431 A CN92105431 A CN 92105431A CN 1023689 C CN1023689 C CN 1023689C
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- nozzle
- furnace
- nozzle bag
- skewback
- quick quenching
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Abstract
The present invention relates to a vacuum quick quenching furnace mainly suitable for the production of amorphous and microcrystal materials. The furnace is characterized in that the casing of the furnace body is divided into two parts, wherein one part can be moved, which is beneficial to maintenance, sweeping, charging, etc.; a nozzle bump can be horizontally moved and slightly adjusted up and down, so the distance between a nozzle and a quick quenching roller can be adjusted on line; the nozzle bump is provided with a preheating position capable of preheating the nozzle of the nozzle bump to 1300 to 1450 DEG C. The furnace can control the degree of non-crystallization and micro crystallization and improve product quality. In addition, the furnace is suitable for producing various noncrystal products of metal and alloy, and is particularly suitable for producing the bond magnet raw materials of Nd, Fe and B alloy.
Description
The invention belongs to the device of the manufacturing metal dust of band chill roll, mainly be applicable to metal and production alloy amorphous or the crystallite goods.
Fast quenching metal or alloy under vacuum or protective atmosphere, method and the device of producing amorphous or crystallite attitude new material have occurred more than 10 year.But the device major part of being developed is capacity little (1～3Kg) vacuum quick quenching furnace, the single roller gas extrusion of the single bag of employing melt method.This device and method is difficult to realize producing in enormous quantities.
The patent application spy that Japan Co., Ltd. of Nippon Steel proposes opens flat 2-247300, the spy opens flat 2-247310 and the clear 63-333829 of Te Kai provides a kind of vertical double-chamber vacuum quick quenching furnace (referring to accompanying drawing 1).The characteristics of this quick quenching furnace are made up of upper and lower tight two vacuum chambers that link to each other, and last vacuum chamber has assembled smelting furnace, and following vacuum chamber is settled fast quenching equipment; The outer wall of two vacuum chambers is all fixed, and (a feeding in raw material) door and window is only arranged in last vacuum chamber side.There is following shortcoming in this device:
(1) because vacuum chamber housing is fixed, make comparatively difficulty of operations such as maintenance, cleaning, it is very inconvenient particularly to change the nozzle bag, and simultaneously, the reconditioning turning of fast quenching roller can not on the thronely be carried out.Therefore, between two smelting furnaces are inferior, need long stopping production maintenance time.
(2) spacing between nozzle and the fast quenching roller can not online (duty) be adjusted.In fact, because the thermal expansion of nozzle and fast quenching roller must cause the spacing between them to change, and this variation directly influences the non-crystallization degree and the performance of product.Therefore, can not adjust the spacing between nozzle and the fast quenching roller in time exactly, can not satisfy the production needs of multiple different-alloy product, product that can not the obtained performance uniformity.
(3) though this patent has proposed to solve quartzy nozzle bag and the fireclay insulating refractory cracked problem of caused inclusion that reacts, but do not solve the reaction and the bonding problem of quartzy nozzle bag and Nd-Fe-B alloy, thereby can not be applicable to the quick-quenching Nd-Fe-B alloy, promptly range of application is very limited.
(4) because ultramicron and suspended impurity can not be in time cleaned in down vacuum chamber sealing, certainly will influence subsequently product quality and the normal operation of equipment.
Chinese patent application CN85203952.U discloses a kind of combined type nozzle of non-crystaline amorphous metal manufacturing usefulness, and it is combined by last nozzle and following nozzle.It is simple in structure, and is easy to use, and spray-hole can be processed into different shape.Nozzle is easy to crack etc. during use.Its major defect is that its capacity is little, can only be used for the laboratory, should not be used for producing in batches.
The object of the present invention is to provide a kind of vacuum quick quenching furnace that big capacity is produced amorphous or micro crystal material that satisfies.
At above-mentioned purpose, the present invention has adopted following major technique measure:
1, the furnace shell of whole vacuum quick quenching furnace is from vertically being divided into the two large divisions: a part maintains static; Another part is movably.Two parts connect and sealing by negative-pressure adsorption.
2, induction melting furnace of installing in vacuum chamber, and be furnished with measuring temp of molten steel and feeding device; Other is furnished with the nozzle bag of an eddy-current heating.
3, in furnace shell standing part one side, on the same horizontal level of nozzle bag, the nozzle bag of assembling drive moves and controlling organization, is used for the spacing between mobile nozzle bag and control and adjusting nozzle and the fast quenching roller.
The nozzle bag moves and controlling organization adopts spiral-skewback mechanism, and it is by screw rod, skewback, thrust shaft block, push rod, push-and-pull articulation, Plan sliding transporting vehicle are formed up and down.Go up the both sides that skewback is fixed on the nozzle bag for two, go up skewback for two and be bearing on two following skewbacks; Following skewback has internal thread, adopts with screw rod to be threaded; Screw rod links to each other with stepper motor outside furnace shell; Push rod links to each other with the push-and-pull articulation; Thrust shaft is admitted to be installed on the Plan sliding transporting vehicle with the push-and-pull articulation.
4, nozzle is surrounded by one and preheats the position, and preheat the position below be provided with the eddy-current heating body, can make nozzle bag and nozzle be preheating to 1300～1450 ℃.
5, nozzle bag weld material adopts SiC, Si
3N
4, Al
2O
3, among the NgO any one or two kinds of more than, the nozzle material adopts Si
3N
4, BN, Al
2O
3In any one or two kinds of more than, inclusion is graphite induction heater outward.
6, adopt wide fast quenching roller and microscler nozzle.Roll surface width 〉=1500mm, nozzle length＞100mm.
Compared with prior art, the present invention has following advantage:
(1) because a part of furnace shell is removable, like this, operations such as maintenance, cleaning and assembling furnace charge are very convenient, and shortened the off-time between the heat greatly, improved productivity ratio.
(2) by spiral one skewback mechanism and electric pushrod, can mobile nozzle bag and upper and lower fine setting, accurately On-line Control and regulate spacing between nozzle and the fast quenching roller can be controlled decrystallized or the controlled micro crystallization degree more accurately, improves the quality of products.
(3) nozzle bag and nozzle material and 1300～1450 ℃ of preheatings make the melt of the present invention applicable to various metals and alloy, comprising the Nd-Fe-B alloy.Enlarged the scope of fast quenching article of manufacture.
(4) wide fast quenching roller and long nozzle shorten the spray band time, and description enlarges, and can satisfy the requirement that big capacity amorphous or crystallite product lot quantity are produced.
Now the present invention is further elaborated in conjunction with the accompanying drawings:
Accompanying drawing 2 is the structural representation of vacuum quick quenching furnace of the present invention.
Accompanying drawing 3 moves structural representation with controlling organization for the nozzle bag.
Among Fig. 2,1 is induction melting furnace, and 2 is the nozzle bag, and 3 are graphite induction heater, 4 is the fireproof heat-insulating layer, and 5 is induction coil, and 6 is destroyer, and 7 is surge drum, 8 is the fast quenching roller, and 9 is the stainless steel wire brush wheel, and 10 is sweeper, and 11 is nozzle, 12 are the induction heater, and 13 for the nozzle bag preheats the position, and 14 is the furnace shell standing part, 15 is the furnace shell moveable part, and 16 is the vacuum system interface, and 17 move and controlling organization for the nozzle bag, 18 is the supporting base of furnace shell standing part, and 19 is guide wheel, and 20 is guide rail.
Furnace shell standing part 14 is fixed on the supporting base 18, and furnace shell moveable part 15 is bearing on the guide wheel 19, and guide wheel 19 is in again on the guide rail 20, when work, furnace shell moveable part 15 is passed forward, combines with furnace shell standing part 14, and both connect and sealing by negative-pressure adsorption; When a stove melting finishes, furnace shell movable part 15 is pushed open along guide rail 20, be convenient to the cleaning of vacuum chamber, and the maintenance of installing in the stove, for example reconditioning of fast quenching roller 8, nozzle 11 is changed (the necessary every stove of nozzle is changed), can carry out the shove charge of next heat furnace charge.Induction melting furnace 1 is furnished with thermometric and feeding device (not drawing among the figure).Be graphite induction heater around the nozzle bag 2.Nozzle bag 2 can use a cover intermediate frequency power supply with induction melting furnace 1, also can use the power supply of singly joining separately.Nozzle bag 2 is in the nozzle bag and preheats position 13 before injecting molten steel, and induction heater 12 can carry out preheating to the nozzle bag, makes to water that nozzle bag 2 and nozzle 11 can preheat 1300～1450 ℃ before the steel.This helps carrying out smoothly of different-alloy amorphous or crystallite spray band.Because furnace shell standing part 14 1 sides are introduced the nozzle bag and moved and controlling organization 17, finish moving and upper and lower micro-adjustment of nozzle bag 2, so that accurately control the spacing of nozzle and fast quenching roller.The below of fast quenching roller 8 is provided with stainless steel wire or copper alloy silk brush wheel 9, by motor-driven.Be provided with a sweeper 10 behind the brush wheel 9, it is made by fire retardant or cotton cloth.Brush wheel 9 and sweeper 10 guarantee the fineness and the cleaning on fast quenching roller surface in the production process, help continuous and stable production.
Fast quenching roller of the present invention adopts wide roll surface, roll surface width 〉=150mm, and adopt microscler nozzle, nozzle length 〉=100mm.This can shorten the spray band time with the capacity molten mass, enlarges description, can improve the capacity of smelting furnace.
Among Fig. 3,2 is the nozzle bag, and 14 is the furnace shell standing part, 21,21 ', 21 " be the close box of vacuum; 22,22 ' be thrust shaft block, 23 are skewback, 23 down ' be last skewback, 24,24 ' be screw rod, 25 slide rails for fixing; 26 is Plan sliding transporting vehicle, and 27 is the push-and-pull articulation, and 28 is push rod.
Last push shaft bearing 22 and 22 ', push-and-pull articulation 27 is installed on the Plan sliding transporting vehicle 26.Go up skewback 23 ' the be fixed on both sides of nozzle bag 2, last skewback 23 ' be bearing in down on the skewback 23 for two.Two following skewbacks 23 have internal thread, with screw rod 24,24 ' on the spiral shell button match, by left-handed or right handed screw 24,24 ', drive two following skewbacks 23 and advance or retreat, thereby regulate the ascending, descending of nozzle bag, the spacing between control nozzle 11 and the fast quenching roller 8.Push rod 28 is connected with push-and-pull articulation 27, Plan sliding transporting vehicle 26 is advanced or retreats by the outer electronic pull bar 28 of stove, and promptly mobile nozzle bag 2 makes it to be in the operating position or preheats position 13.Screw rod 24,24 ' be in the outer part of stove all to link to each other, by controlling two stepper motors, the spacing between adjusted in concert nozzle 11 and the fast quenching roller 8, and the collimation of roll surface and nozzle at any time with stepper motor.
Adopt apparatus of the present invention not only can the spray iron-based, the amorphous or the crystallite goods of alloy such as cobalt-based, iron be Ni-based, and be specially adapted to the amorphous and the crystallite goods of spray Nd-Fe-B alloy.
The course of work of this vacuum quick quenching furnace is as follows: treat that the vacuum chamber cleaning finishes, pack into behind the furnace charge, mobile furnace shell moveable part 15, make it to close and disturb, seal, start and vacuumize unit with furnace shell standing part 14, make to reach the 0.1Pa condition of high vacuum degree in the body of heater, start power supply then, furnace charge is melted, in fusion process, can feed in raw material by feeding device; Meanwhile, nozzle bag 2 is in the nozzle bag and preheats position 13, carry out preheating, before melting finishes, carry out preconditioning, promptly by the nozzle bag move with controlling organization 17 in push rod 28, nozzle 2 is delivered to the operating position, and by the spacing that screw rod 24 and skewback 23 regulated nozzles 11 and fast quenching roller 8, finish preconditioning after, return ready position 13; Melting is shifted nozzle bag 2 onto operating position once more, and molten steel is injected nozzle bag 2 after finishing, molten steel passes through nozzle 11 by certain flow, flow to the fast quenching roll surface [(before this, the fast quenching roller started required rotating speed (as 15～45M/S)], beginning spray amorphous or microcrystallizing alloy.
Break away from metal or alloy band, the bar of fast quenching roll surface, after the destroyer fragmentation, enter equably in the surge drum 7, obtain amorphous or crystallite goods.
Claims (6)
1, a kind of vacuum quick quenching furnace comprises vacuum chamber's housing, smelting furnace, nozzle bag, nozzle, fast quenching roller, it is characterized in that:
The furnace shell of A, whole vacuum quick quenching furnace is from vertically being divided into the two large divisions: a part is furnace shell standing part (14), and another part is furnace shell moveable part (15);
B, in furnace shell standing part (14) one sides, assembled be used for mobile nozzle bag (2) and control and regulate nozzle (11) and fast quenching roller (8) between nozzle bag spacing, drive move and controlling organization (17);
C, nozzle bag (2) have one to preheat position (13), and there is an induction heater (12) that can carry out preheating to the nozzle bag its below;
D, fast quenching roller (8) roll surface width 〉=150mm;
Length 〉=the 100mm of E, nozzle (11).
2, vacuum quick quenching furnace according to claim 1 is characterized in that furnace shell part (14) and furnace shell moveable part (15) adopt negative-pressure adsorption to be connected, and sealing.
3, vacuum quick quenching furnace according to claim 1, it is characterized in that the nozzle bag moves and controlling organization (17) adopts spiral-skewback mechanism, it is made up of screw rod (24) and (24 '), upper and lower skewback (23 ') and (23), thrust shaft block (22) and (22 '), push rod (28) and push-and-pull articulation (27), Plan sliding transporting vehicle (26); Go up the both sides that skewback (23 ') is fixed on nozzle bag (2) for two, last skewback (23 ') is bearing in down on the skewback (23), following skewback (23) adopts and is threaded with screw rod (24), (24 '), and screw rod (24), (24 ') link to each other with stepper motor outside furnace shell; Push rod (28) links to each other with push-and-pull articulation (27); Thrust shaft block (22) and (22 '), push-and-pull articulation (27) are installed on the Plan sliding transporting vehicle (26).
4, vacuum quick quenching furnace according to claim 3 is characterized in that two following skewbacks (23) have internal thread, with screw rod 24,24 ' on the spiral shell button match.
5, vacuum quick quenching furnace according to claim 1 is characterized in that nozzle bag (2) weld material adopts SiC, Si
3N
4, Al
2O
3Or among the MgO any one or two kinds of more than; Nozzle (11) material adopts SiN, BN, Al
2O
3In any one or two kinds of more than.
6, according to claim 1 or 3 described vacuum quick quenching furnaces, it is characterized in that the nozzle bag moves and controlling organization (17) be assemblied in the same horizontal level of nozzle bag (2) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105431 CN1023689C (en) | 1992-07-08 | 1992-07-08 | vacuum quick quenching furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92105431 CN1023689C (en) | 1992-07-08 | 1992-07-08 | vacuum quick quenching furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1068056A CN1068056A (en) | 1993-01-20 |
| CN1023689C true CN1023689C (en) | 1994-02-09 |
Family
ID=4941382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92105431 Expired - Fee Related CN1023689C (en) | 1992-07-08 | 1992-07-08 | vacuum quick quenching furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1023689C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103769597A (en) * | 2013-07-08 | 2014-05-07 | 湖南久泰冶金科技有限公司 | Technology and device for continuously manufacturing high-quality amorphous alloy powder materials on large scale |
| CN104772466B (en) * | 2014-01-13 | 2017-01-11 | 中国科学院宁波材料技术与工程研究所 | Continuous vacuum rapid quenching equipment and method for metal rapid quenching by using equipment |
| CN104550986A (en) * | 2014-12-29 | 2015-04-29 | 东莞市海天磁业有限公司 | High-vacuum rapid quenching furnace |
| CN108788034A (en) * | 2017-06-07 | 2018-11-13 | 上海交通大学 | The preparation method and device of fine aluminium crystallite and non-crystalline material |
| CN108817334A (en) * | 2018-07-20 | 2018-11-16 | 芜湖君华材料有限公司 | A kind of non-billon band crushing collection method |
-
1992
- 1992-07-08 CN CN 92105431 patent/CN1023689C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1068056A (en) | 1993-01-20 |
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| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |