CN101644537B - Double-chamber vacuum oriented smelting furnace and use method thereof - Google Patents
Double-chamber vacuum oriented smelting furnace and use method thereof Download PDFInfo
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- CN101644537B CN101644537B CN2009101018459A CN200910101845A CN101644537B CN 101644537 B CN101644537 B CN 101644537B CN 2009101018459 A CN2009101018459 A CN 2009101018459A CN 200910101845 A CN200910101845 A CN 200910101845A CN 101644537 B CN101644537 B CN 101644537B
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Abstract
The invention relates to a double-chamber vacuum oriented smelting furnace and a use method thereof. The bottom of a first furnace body is provided with a through hole which is provided with a slide damper. The other side of the slide damper is cooperatively provided with a second furnace body. The slide damper and the second furnace body are connected with each other by a vacuum suction force. The bottom of the second furnace body is provided with a cold water pipe. The first furnace body and the slide damper are respectively connected with a vacuum system. Firstly, alloy is smelted in the first furnace body in a vacuum state. Then a high-temperature formwork is put into the second furnace body. The second furnace body is connected with the first furnace body by the slide damper. Before the opening of the slide damper, the second furnace body needs to be vacuumized till being the same as the first furnace body. The slide damper is opened, and the two furnace bodies are communicated with each other. Vacuumizing is continued. Then argon gas is filled. Under the inert gas protection, casting is carried out. Simultaneously, the cold water pipe is opened to cool an oriented crystallization plate. The smelting furnace prevents the burning loss of various metal elements in materials under high temperatures, and the burning loss is lower than 0.5 percent. Slag inclusion of products is reduced. The appearance acceptability is improved to be higher than 94 percent.
Description
Technical field
The present invention relates to a kind of double-chamber vacuum oriented smelting furnace and method for using thereof.
Background technology
At present, the melting of magnetic material is in the environment that opens wide, to carry out mostly, and this production technology greatly reduces the performance of magnetic material; As 1. when the condition of high temperature, alloy is in molten condition, and temperature generally is about 1600～1700 ℃; Under this temperature, cause that very easily various elements in the alloy (particularly indivedual comparatively active element) react with airborne oxidizing atmosphere (gases such as oxygen, nitrogen), cause each melting loss of elements; Thereby can not control effectively to alloying component, can not guarantee effectively that 2. various metallic elements thoroughly evenly mix, owing to be open type production; The high melt of long period can cause each metallic element over oxidation scaling loss, therefore must shorten the high temperature refining time as far as possible, thereby the various metallic elements in the alloying component can not thoroughly evenly be mixed; 3. a large amount of oxidations of each metallic element form slag, and then cause the product appearance to have defectives such as slag inclusion, and appearance yield only is about 85%; 4. condition of work is relatively poor relatively, and operating personnel grab operations such as slag, stirring in the face of the alloy liquid of about 1600 ℃ of high temperature, and danger is big, labour intensity is high, difficult operation (needing the multiple person cooperational completion); 5. the magnetic property less stable of product; Dispersion is high, and (product magnetic energy product 9～11MGOe), qualification rate only are about 90%, 6. wide variety of materials scaling loss waste; Burn out rate surpasses 12%, is problem demanding prompt solution so design device and the production technology that a kind ofly can enhance product performance, reduce waste of material, improve the working environment of workers.
Summary of the invention
To the problem that exists in the prior art, the object of the present invention is to provide a kind of double-chamber vacuum oriented smelting furnace and method for using thereof, through vacuum melting and crystallographic orientation, improved the disposable qualification rate of product to alloy material.
Described a kind of double-chamber vacuum oriented smelting furnace; Comprise first body of heater, electric cabinet, vacuum system, it is characterized in that described first bottom of furnace body is provided with through hole, install in the through hole push-pull valve is set; The opposite side of push-pull valve is equipped with second body of heater; Push-pull valve is connected through pull of vacuum with second body of heater, and the bottom of second body of heater is provided with cold water pipe, and first body of heater links to each other with vacuum system respectively with push-pull valve.
Described a kind of double-chamber vacuum oriented smelting furnace is characterized in that the junction of the described push-pull valve and first body of heater, second body of heater is provided with sealing ring respectively.
Described a kind of double-chamber vacuum oriented smelting furnace is characterized in that described first body of heater by bell, shaft, crucible with water cup and one form, and the through hole that waters cup one and crucible, first bottom of furnace body is equipped with.
Described a kind of double-chamber vacuum oriented smelting furnace; The bottom side, inside that it is characterized in that described second body of heater is provided with the crystallographic orientation plate; Casting housing, heat-insulation layer, formwork are set on the crystallographic orientation plate, die cap are set, charging hole is set on the die cap at the top of formwork; Pressing plate is placed at casting housing, heat-insulation layer, die cap top, and interlocking setting is watered cup two on the pressing plate.
Described a kind of double-chamber vacuum oriented smelting furnace is characterized in that described heat-insulation layer is asbestos.
The method for using of described a kind of double-chamber vacuum oriented smelting furnace is characterized in that comprising the steps:
1) raw material ratio;
2) inspection smelting furnace system;
3) with the raw material crucible of packing into, place according to the position of crucible and to water cup one, cover bell;
4) first body of heater is evacuated to 20Pa;
5) start intermediate frequency power supply, the raw material in the crucible are heated, in heating furnace, formwork is heated simultaneously, until reaching 1300 ℃;
6) first body of heater stops to vacuumize, and in first body of heater, pours argon gas, continues then the raw material in the crucible are carried out refining;
7) when refining is near completion, casting housing, heat-insulation layer, formwork in second body of heater are placed, rapid high temperature formwork with 1300 ℃ changes second body of heater over to, covers die cap, places pressing plate and waters cup two;
8) second body of heater is pushed under first body of heater, second body of heater jack-up that makes progress is docked with push-pull valve through flange, open the valve that is connected of push-pull valve and vacuum system through hydraulic system; Vacuumize for second body of heater, this moment, second body of heater closely contacted with push-pull valve, continued to vacuumize until consistent with the vacuum of first body of heater; Open push-pull valve, first body of heater and second body of heater are communicated with, and continue to be evacuated to 20Pa; This moment, refining time arrived, and smelting furnace is poured argon gas, prepared casting;
9) open cold water to the cooling of crystallographic orientation plate, close or turn down the heating of intermediate frequency power simultaneously, the alloy liquid of fusion is poured into formwork, the continued of cast is washed by water and was cooled off 30 minutes;
10) open vent valve on the push-pull valve, second body of heater separates with first body of heater, pulls out second body of heater, takes out the formwork in second body of heater, formed product.
The method for using of described a kind of double-chamber vacuum oriented smelting furnace is characterized in that the refining time described in the step 6) is 9-11 minute.
The method for using of described a kind of double-chamber vacuum oriented smelting furnace, it is characterized in that in the described step 7) taking out in high temperature formwork to the step 8) second body of heater make progress jack-up should be through the flange and the time interval between push-pull valve docks less than 30 seconds.
The method for using of described a kind of double-chamber vacuum oriented smelting furnace is characterized in that the alloy liquid with fusion described in the step 9) pours into formwork and in 40 seconds, accomplishes.
Above-mentioned a kind of double-chamber vacuum oriented smelting furnace and method for using thereof are offered through hole at first bottom of furnace body, are communicated with second body of heater through push-pull valve, guaranteed melting with the casting all under the protection of vacuum and inert gas, carry out, realized following beneficial effect:
1. stopped each metallic element scaling loss at high temperature in the material, burn out rate is low to moderate below 0.5%, has reduced the product slag inclusion, and appearance yield is increased to more than 94%;
2. improved employee's operating environment, reduced labour intensity, improved efficiency, only needed the one man operation, need not in the face of high temperature;
3. guaranteed the uniformity of metallic element in effective control and the alloying component of material chemical composition;
Magnetism of material can aspect obtained unprecedented breakthrough and can be stable remain on higher level, the magnetic property of bulk article can be stabilized in more than the 12.0MGOe, reaches as high as 13.0MGOe;
5. simplified production technology, guaranteed the uniformity and the stability of product magnetic property, the magnetic qualification rate of product is increased to more than 98%.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: 1-bell, 2-first body of heater, 3-crucible, 4-water cup one, and 5-push-pull valve, 6-second body of heater, 7-water cup two, 8-pressing plate, 9-die cap, 10-heat-insulation layer, the 11-housing of cast, 12-formwork, 13-crystallographic orientation plate, 14-cold water pipe, the electric cabinet of 15-, 16-vacuum system.
The specific embodiment
Below in conjunction with Figure of description the present invention is further specified:
As shown in Figure 1; A kind of double-chamber vacuum oriented smelting furnace comprises first body of heater 2, electric cabinet 15, vacuum system 16, it is characterized in that described first body of heater 2 bottoms are provided with through hole; Installation is provided with push-pull valve 5 in the through hole; The opposite side of push-pull valve 5 is equipped with second body of heater 6, and push-pull valve 5 is connected through pull of vacuum with second body of heater 6, and the junction of the push-pull valve 5 and first body of heater 2, second body of heater 6 is provided with sealing ring respectively; The bottom of second body of heater 6 is provided with cold water pipe 14, the first bodies of heater 2 and links to each other with vacuum system 16 respectively with push-pull valve 5; First body of heater 2 is by bell 1, shaft, crucible 3 and water cup and one 4 forms, and the through hole that waters cup 1 and crucible 3, first body of heater, 2 bottoms is equipped with, and the bottom side, inside of second body of heater 6 is provided with crystallographic orientation plate 13; Casting housing 11, heat-insulation layer 10, formwork 12 are set on the crystallographic orientation plate; Heat-insulation layer 10 is asbestos, at the top of formwork 12 die cap 9 is set, and on the die cap 9 charging hole is set; Pressing plate 8 is placed at casting housing 11, heat-insulation layer 10, die cap 9 tops, and interlocking setting is watered cup 27 on the pressing plate 8.
A kind of method for using of double-chamber vacuum oriented smelting furnace is characterized in that comprising the steps:
1) raw material ratio;
2) inspection smelting furnace system;
3) with the raw material crucible 3 of packing into, place according to the position of crucible 3 and to water cup 1, cover bell 1;
4) first body of heater 2 is evacuated to 20Pa;
5) start intermediate frequency power supply, the raw material in the crucible 3 are heated, in heating furnace, formwork 12 is heated simultaneously, until reaching 1300 ℃;
6) first body of heater 2 stops to vacuumize, and in first body of heater 2, pours argon gas, continues then the raw material in the crucible 3 are carried out refining;
7) when refining is near completion, casting housing 11, heat-insulation layer 10, formwork 12 in second body of heater 6 are placed, rapid high temperature formwork 12 with 1300 ℃ changes second body of heater 6 over to, covers die cap 9, places pressing plate 8 and waters cup 27;
8) second body of heater 6 is pushed under first body of heater 2, through hydraulic system with second body of heater 6 upwards jack-up dock with push-pull valve 5 through flange, open the valve that is connected of push-pull valve 5 and vacuum system 16; Vacuumize for second body of heater 6, this moment, second body of heater 6 closely was connected with push-pull valve 5, continued to vacuumize until consistent with the vacuum of first body of heater 2; Open push-pull valve 5; First body of heater 2 and second body of heater 6 are communicated with, and continue to be evacuated to 20Pa, and this moment, refining time arrived; Smelting furnace is poured argon gas, prepare casting;
9) open cold water to 13 coolings of crystallographic orientation plate, close or turn down the heating of intermediate frequency power simultaneously, the alloy liquid of fusion is poured into formwork 12, the continued of cast is washed by water and was cooled off 30 minutes;
10) open vent valve on the push-pull valve 5, second body of heater 6 separates with first body of heater 2, pulls out second body of heater 6, takes out the formwork 12 in second body of heater 6, formed product.
Wherein the refining time described in the step 6) is 9-11 minute; Upwards jack-up should be less than 30 seconds through the flange and the time interval between push-pull valve 5 docks to take out in high temperature formwork 12 to the step 8) second body of heater 6 in the step 7); The alloy liquid with fusion described in the step 9) pours into formwork 12 and in 40 seconds, accomplishes, and only guaranteed coming out of the stove to from the high temperature formwork cast completion in 95 seconds, can guarantee that just the various characteristics of product reaches high-level requirement.
Above-mentioned a kind of double-chamber vacuum oriented smelting furnace and method for using thereof are offered through hole in first body of heater, 2 bottoms, are communicated with second body of heater 6 through push-pull valve 5, guaranteed melting with the casting all under the protection of vacuum and inert gas, carry out, realized following beneficial effect:
1. stopped each metallic element scaling loss at high temperature in the material, burn out rate is low to moderate below 0.5%, has reduced the product slag inclusion, and appearance yield is increased to more than 94%;
2. improved employee's operating environment, reduced labour intensity, improved efficiency, only needed the one man operation, need not in the face of high temperature;
3. guaranteed the uniformity of metallic element in effective control and the alloying component of material chemical composition;
Magnetism of material can aspect obtained unprecedented breakthrough and can be stable remain on higher level, the magnetic property of bulk article can be stabilized in more than the 12.0MGOe, reaches as high as 13.0MGOe;
5. simplified production technology, guaranteed the uniformity and the stability of product magnetic property, the magnetic qualification rate of product is increased to more than 98%.
Claims (8)
1. double-chamber vacuum oriented smelting furnace; Comprise first body of heater (2), electric cabinet (15), vacuum system (16); It is characterized in that described first body of heater (2) bottom is provided with through hole; Installation is provided with push-pull valve (5) in the through hole, and the opposite side of push-pull valve (5) is equipped with second body of heater (6), and push-pull valve (5) is connected through pull of vacuum with second body of heater (6); The bottom of second body of heater (6) is provided with cold water pipe (14), and first body of heater (2) links to each other with vacuum system (16) respectively with push-pull valve (5);
The bottom side, inside of described second body of heater (6) is provided with crystallographic orientation plate (13); Casting housing (11), heat-insulation layer (10), formwork (12) are set on the crystallographic orientation plate; At the top of formwork (12) die cap (9) is set; Die cap is provided with charging hole on (9), and pressing plate (8) is placed at casting housing (11), heat-insulation layer (10), die cap (9) top, and pressing plate (8) is gone up interlocking setting and watered cup two (7).
2. a kind of double-chamber vacuum oriented smelting furnace according to claim 1 is characterized in that the described push-pull valve (5) and the junction of first body of heater (2), second body of heater (6) are provided with sealing ring respectively.
3. a kind of double-chamber vacuum oriented smelting furnace according to claim 1; It is characterized in that described first body of heater (2) by bell (1), shaft, crucible (3) with water cup and one (4) forms, waters the through hole of cup one (4) bottom crucible (3), first body of heater (2) and is equipped with.
4. a kind of double-chamber vacuum oriented smelting furnace according to claim 1 is characterized in that described heat-insulation layer (10) is asbestos.
5. the method for using of a double-chamber vacuum oriented smelting furnace as claimed in claim 3 is characterized in that comprising the steps:
1) raw material ratio;
2) inspection smelting furnace system;
3) with the raw material crucible (3) of packing into, place according to the position of crucible (3) and to water cup one (4), cover bell (1);
4) first body of heater (2) is evacuated to 20Pa;
5) start intermediate frequency power supply, the raw material in the crucible (3) are heated, in heating furnace, formwork (12) is heated simultaneously, until reaching 1300 ° of C;
6) first body of heater (2) stops to vacuumize, and in first body of heater (2), pours argon gas, continues then the raw material in the crucible (3) are carried out refining;
7) when refining is near completion; Casting housing (11), heat-insulation layer (10), formwork (12) in second body of heater (6) are placed; High temperature formwork (12) with 1300 ° of C changes second body of heater (6) over to rapidly, covers die cap (9), places pressing plate (8) and waters cup two (7);
8) second body of heater (6) is pushed under first body of heater (2), through hydraulic system with second body of heater (6) upwards jack-up dock with push-pull valve (5) through flange, open the valve that is connected of push-pull valve (5) and vacuum system (16); Vacuumize for second body of heater (6), second body of heater this moment (6) closely contacts with push-pull valve (5), continues to vacuumize until consistent with the vacuum of first body of heater (2); Open push-pull valve (5); First body of heater (2) and second body of heater (6) are communicated with, and continue to be evacuated to 20Pa, and this moment, refining time arrived; Smelting furnace is poured argon gas, prepare casting;
9) open cold water to crystallographic orientation plate (13) cooling, close or turn down the heating of intermediate frequency power simultaneously, the alloy liquid of fusion is poured into formwork (12), the continued of cast is washed by water and was cooled off 30 minutes;
10) open vent valve on the push-pull valve (5), second body of heater (6) separates with first body of heater (2), pulls out second body of heater (6), takes out the formwork (12) in second body of heater (6), formed product.
6. the method for using of a kind of double-chamber vacuum oriented smelting furnace according to claim 5 is characterized in that the refining time described in the step 6) is 9-11 minute.
7. the method for using of a kind of double-chamber vacuum oriented smelting furnace according to claim 5, upwards jack-up should be less than 30 seconds through the flange and the time interval between push-pull valve (5) docks to it is characterized in that taking out in the described step 7) in high temperature formwork (12) to the step 8) second body of heater (6).
8. the method for using of a kind of double-chamber vacuum oriented smelting furnace according to claim 5 is characterized in that the alloy liquid with fusion described in the step 9) pours into formwork (12) and in 40 seconds, accomplishes.
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| CN101907396B (en) * | 2010-08-23 | 2012-01-04 | 西安航空动力股份有限公司 | Feeding mechanism for vacuum casting furnace |
| CN102767948A (en) * | 2012-08-13 | 2012-11-07 | 西安四方超轻材料有限公司 | Split magnesium-lithium alloy vacuum smelting furnace |
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| CN105033200A (en) * | 2015-09-18 | 2015-11-11 | 山东钢铁股份有限公司 | Vacuum smelting-casting equipment and process |
| CN109518065B (en) * | 2018-12-26 | 2021-01-05 | 杭州科德磁业有限公司 | Preparation method of large-size special-shaped aluminum-nickel-cobalt magnet for brushless exciter |
| CN114309574B (en) * | 2021-12-31 | 2023-06-23 | 无锡刚正精密吸铸有限公司 | Automatic production system for directional crystallization |
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Owner name: HANGZHOU KEDE MAGNETIC COMPONENTS CO., LTD. Free format text: FORMER OWNER: ZHANG BAOGUO Effective date: 20130123 Free format text: FORMER OWNER: HANGZHOU KEDE MAGNETIC COMPONENTS CO., LTD. Effective date: 20130123 |
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Effective date of registration: 20130123 Address after: 311500, Zhejiang, Hangzhou County, Tonglu Province, No. 168, Tong Yang Road, county Patentee after: Hangzhou Kede Magnetic Industry Co., Ltd. Address before: Green pond road in Tonglu County of Hangzhou City, Jun 311500 Zhejiang Province Zhang Street No. 168 Patentee before: Zhang Baoguo Patentee before: Hangzhou Kede Magnetic Industry Co., Ltd. |