CN203443339U - Magnesium alloy melting furnace - Google Patents
Magnesium alloy melting furnace Download PDFInfo
- Publication number
- CN203443339U CN203443339U CN201320575594.XU CN201320575594U CN203443339U CN 203443339 U CN203443339 U CN 203443339U CN 201320575594 U CN201320575594 U CN 201320575594U CN 203443339 U CN203443339 U CN 203443339U
- Authority
- CN
- China
- Prior art keywords
- crucible
- melting furnace
- magnesium alloy
- gas
- crucible cover
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The utility model discloses a magnesium alloy melting furnace. The magnesium alloy melting furnace comprises a melting furnace shell, electric heaters, a crucible, a crucible cover and a shielding gas transportation main pipe, wherein a fire-resisting layer is arranged at the inner wall of the melting furnace shell, the crucible is arranged in the melting furnace shell, the electric heaters are located between the fire-resisting layer and the crucible, the crucible cover is located above the crucible and is fixed with the crucible through bolts, and a feeding hole is formed in the crucible cover. The magnesium alloy melting furnace is characterized in that a plurality of through holes are formed in the crucible cover, a shielding gas output pipe is arranged in each through hole, gas outlets of the shielding gas output pipes are arranged downwards, the upper end of each shielding gas output pipe is connected with a tee joint, multiple gas transmission branch pipes are connected in series through the tee joints to form a gas transmission pipeline, the gas transmission pipeline is located above the crucible cover, and two ends of the gas transmission pipeline are connected with the shielding gas transportation main pipe. According to the magnesium alloy melting furnace, the shielding gas transportation pipeline can be prevented from being blocked by magnesium liquid, enough shielding gas can be input, the oxidization of liquid-state magnesium alloy in the crucible can be prevented, and the gas transmission pipeline is convenient to detach and maintain.
Description
Technical field
The utility model relates to melting furnace field, particularly relates to a kind of magnesium alloy melting furnace.
Background technology
Magnesium alloy characteristic: burning-point: 550 ℃, fusing point: 650 ℃, it has burning-point lower than the characteristic of fusing point.Magnesium alloy solid-state material heat fused in magnesium-alloy smelting furnace becomes in liquid magnesium alloy process; when avoiding temperature to meet or exceed burning-point magnesium alloy burn, oxidative phenomena; need in the crucible of melting furnace, inject protective gas (nitrogen and sulfur hexafluoride); at crucible surface, form the protective gas layer of an air-isolation and liquid magnesium alloy; isolation smelting furnace enters the oxygen in stove from charge door when reinforced, stops magnesium alloy burning and oxidation.
The escape pipe of the protection gas air delivering pipeline of existing magnesium alloy melting furnace is between crucible cover and crucible and horizontally set; solid Magnesium Alloy raw material is in adding magnesium alloy melting furnace crucible time; magnesium alloy materials is when touching magnesium alloy liquid level; magnesium liquid can splash to surrounding from contact point; the magnesium liquid sputtering very easily stops up the mouth of pipe of the escape pipe that is arranged in crucible periphery; cause protective gas deficiency in stove, cause liquid magnesium alloy oxidation in crucible.After magnesium alloy oxidation, can form a large amount of oxidizing slags, oxidizing slag is attached to furnace crucible wall, after a period of time, can form hard solid matter layer, cause crucible volume reducing, the outer electric heater heat of crucible can not finely be transmitted in crucible simultaneously, cause burn-off rate to reduce, can not meet Production requirement, thereby reduce Die Casting efficiency.It has following shortcoming:
1. in crucible, liquid magnesium oxidation is serious, and oxide floats on magnesium liquid surface, and the magnesium liquid of trapped oxide is poured in mould, causes quality of die casting defect.
2. liquid magnesium oxidizing fire in crucible, material scaling loss, causes utilization rate of raw materials not high, and cost of goods manufactured increases.
3. liquid magnesium oxidation is serious in crucible, and oxide attached crucible wall and float on liquid level causes employee's slag hitting workload to increase, and when serious, the average slag hitting time is 3～6h/ time.
4. escape pipe is positioned at crucible cover below, and protection gas air delivering pipeline with escape pipe for being fixedly connected with, non-dismountable, maintenance or dredge while protecting gas air delivering pipeline, need take crucible cover apart, workload is large, the cycle is long.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art; a kind of magnesium alloy melting furnace is provided, and it can prevent that magnesium liquid from stopping up protection gas air delivering pipeline, guarantees the protection gas that input is enough; prevent liquid magnesium alloy oxidation in crucible, and be convenient to dismounting, the maintenance of air delivering pipeline.
The purpose of this utility model is achieved in that
A kind of magnesium alloy melting furnace, comprise melting furnace housing, electric heater, crucible, crucible cover and protection gas gas transmission supervisor, described melting furnace inner walls is provided with flame retardant coating, described crucible is located in melting furnace housing, described electric heater is between flame retardant coating and crucible, described crucible cover is positioned at the top of crucible to be fixed by bolt and crucible, crucible cover is provided with charging aperture, on described crucible cover, be distributed with a plurality of through holes, protection gas escape pipe is set in each through hole, the gas outlet of protection gas escape pipe is downward, each protects gas escape pipe upper end connecting tee connector, and by threeway connector, many sections of gas transmission arm series windings are formed to air delivering pipeline, make air delivering pipeline be positioned at the top of crucible cover, the two ends of air delivering pipeline are connected with protection gas gas transmission supervisor.
Described air delivering pipeline is at least two, and the two ends of each air delivering pipeline are all connected with protection gas gas transmission supervisor.
Described threeway connector is connected with gas transmission arm by pipe joint, and locks by the locking nut of pipe joint.
Described protection gas escape pipe is weldingly fixed on crucible cover, described threeway connector and protection gas escape pipe threaded engagement.
Between described crucible cover and crucible, be provided with heat insulation foam.
Owing to having adopted such scheme, on crucible cover, be distributed with a plurality of through holes, the gas outlet of protection gas escape pipe downwards and be fixed in corresponding through hole, protection gas escape pipe is positioned at vertical direction, the magnesium liquid Shi Buhui that laterally splashes stops up the air delivering pipeline of protection gas, guarantee the enough protection gas of input in crucible, prevent that magnesium alloy oxidizing slag from appearring in the liquid magnesium alloy oxidation in crucible, crucible volume can not reduce, the heat of the outer electric heater of crucible can finely be transmitted in crucible, slag hitting workload and downtime have been shortened, promoted utilization rate of equipment and installations, meet Production requirement, guarantee die casting efficiency.Each protects gas escape pipe upper end connecting tee connector; and by threeway connector, many sections of gas transmission arm series windings are formed to air delivering pipeline; make air delivering pipeline be positioned at the top of crucible cover; while safeguarding dredging; only need the needed gas transmission arm of dismounting and threeway connector, workload is little, the cycle is short.
Air delivering pipeline is at least two, and the two ends of each air delivering pipeline are all connected with protection gas gas transmission supervisor, have increased the length of air delivering pipeline, makes to protect gas more even in crucible, prevents the better effects if of magnesium liquid oxidation.Each air delivering pipeline is communicated with by protection gas gas transmission supervisor, and air pressure is even, and formation is in parallel, and an air delivering pipeline stops up, and still can guarantee certain protection gas input quantity.
Threeway connector is connected with gas transmission arm by pipe joint, and locks by the locking nut of pipe joint, while safeguarding dredging, only need unclamp locking nut and can pull down the gas transmission arm needing.
Protection gas escape pipe is weldingly fixed on crucible cover, fixing more firm, and threeway connector and protection gas escape pipe threaded engagement, be convenient to dismounting, safeguard.
This magnesium alloy melting furnace has reduced because magnesium alloy oxide is attached to sidewall of crucible and float on liquid level, causes risk and the probability of the mass defect that product causes because of magnesium liquid trapped oxide.Prevent liquid magnesium oxidizing fire, material scaling loss, utilization rate of raw materials is high, reduces cost of goods manufactured.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A cutaway view of Fig. 1.
In accompanying drawing, 1 is melting furnace housing, and 11 is flame retardant coating, and 2 is electric heater, and 3 is crucible, 4 crucible covers, and 41 is charging aperture, and 5 is protection gas gas transmission supervisor, and 6 is protection gas escape pipe, and 7 is threeway connector, and 8 is gas transmission arm, and 9 is pipe joint, and 10 is heat insulation foam.
The specific embodiment
Referring to Fig. 1, Fig. 2; a kind of embodiment for magnesium alloy melting furnace; comprise melting furnace housing 1, electric heater 2, crucible 3, crucible cover 4 and protection gas gas transmission supervisor 5; described melting furnace housing 1 inwall is provided with flame retardant coating 11; described crucible 3 is located in melting furnace housing 1; described electric heater 2 is between flame retardant coating 11 and crucible 3, and it is fixing by bolt and crucible 3 that described crucible cover 4 is positioned at the top of crucible 3, and crucible cover 4 is provided with charging aperture 41.Further, between described crucible cover 4 and crucible 3, be provided with heat insulation foam 10, prevent heat loss in crucible.
On described crucible cover 4, be distributed with a plurality of through holes, protection gas escape pipe 6 is set in each through hole, the gas outlet of protection gas escape pipe 6 is downward, and further, described protection gas escape pipe 6 is weldingly fixed on crucible cover 4, is connected firmly.Described threeway connector 7 and protection gas escape pipe 6 threaded engagement, be convenient to dismounting dredging, safeguard.Each protects gas escape pipe 6 upper end connecting tee connectors 7; and by threeway connector 7, many sections of gas transmission arms 8 series windings are formed to air delivering pipeline; make air delivering pipeline be positioned at the top of crucible cover 4; further; described threeway connector 7 is connected with gas transmission arm 8 by pipe joint 9; and lock by the locking nut of pipe joint 9, formation removably connects.The two ends of air delivering pipeline are connected with protection gas gas transmission supervisor 5.Further; described air delivering pipeline is at least two; the two ends of each air delivering pipeline are all connected with protection gas gas transmission supervisor 5; on protection gas gas transmission supervisor, be provided for and at least two air inlet pipe protecting gas source of the gas to be connected; each air inlet pipe forms parallel connection; an air inlet pipe is stopped up, and still can guarantee certain protection gas input quantity.In the present embodiment, air delivering pipeline is two, and two air delivering pipelines lay respectively at along crucible cover two ends longitudinally.
After protection gas mixes by electrical control cubicles; through entering air inlet pipe, enter protection gas gas transmission supervisor; through each gas transmission arm, threeway connector, protection gas escape pipe, enter in crucible successively again; in crucible, form the protective gas layer of an air-isolation and liquid magnesium alloy; isolation smelting furnace enters the oxygen in stove from charge door when reinforced, stops magnesium alloy burning and oxidation.
The utility model is not only confined to above-described embodiment, carries out the technical scheme of a little change in the situation that not deviating from technical solutions of the utility model spirit, should fall into protection domain of the present utility model.
Claims (5)
1. a magnesium alloy melting furnace, comprise melting furnace housing, electric heater, crucible, crucible cover and protection gas gas transmission supervisor, described melting furnace inner walls is provided with flame retardant coating, described crucible is located in melting furnace housing, described electric heater is between flame retardant coating and crucible, described crucible cover is positioned at the top of crucible to be fixed by bolt and crucible, crucible cover is provided with charging aperture, it is characterized in that: on described crucible cover, be distributed with a plurality of through holes, protection gas escape pipe is set in each through hole, the gas outlet of protection gas escape pipe is downward, each protects gas escape pipe upper end connecting tee connector, and by threeway connector, many sections of gas transmission arm series windings are formed to air delivering pipeline, make air delivering pipeline be positioned at the top of crucible cover, the two ends of air delivering pipeline are connected with protection gas gas transmission supervisor.
2. magnesium alloy melting furnace according to claim 1, is characterized in that: described air delivering pipeline is at least two, and the two ends of each air delivering pipeline are all connected with protection gas gas transmission supervisor.
3. magnesium alloy melting furnace according to claim 1, is characterized in that: described threeway connector is connected with gas transmission arm by pipe joint, and locks by the locking nut of pipe joint.
4. magnesium alloy melting furnace according to claim 1, is characterized in that: described protection gas escape pipe is weldingly fixed on crucible cover, described threeway connector and protection gas escape pipe threaded engagement.
5. magnesium alloy melting furnace according to claim 1, is characterized in that: between described crucible cover and crucible, be provided with heat insulation foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575594.XU CN203443339U (en) | 2013-09-17 | 2013-09-17 | Magnesium alloy melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320575594.XU CN203443339U (en) | 2013-09-17 | 2013-09-17 | Magnesium alloy melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443339U true CN203443339U (en) | 2014-02-19 |
Family
ID=50094379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320575594.XU Expired - Lifetime CN203443339U (en) | 2013-09-17 | 2013-09-17 | Magnesium alloy melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758276A (en) * | 2021-08-17 | 2021-12-07 | 孝义市东义镁业有限公司 | Magnesium liquid transfer device |
-
2013
- 2013-09-17 CN CN201320575594.XU patent/CN203443339U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758276A (en) * | 2021-08-17 | 2021-12-07 | 孝义市东义镁业有限公司 | Magnesium liquid transfer device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102393144B (en) | Manufacturing method of cast copper water jacket embedded with double-layer pure copper pipes | |
| CN203443339U (en) | Magnesium alloy melting furnace | |
| CN103245192B (en) | Intermediate frequency furnace and blast furnace-intermediate frequency furnace combination smelting system | |
| CN204918636U (en) | Cooling wall of blast furnace | |
| CN108631170A (en) | One kind is multi-functional to wear cable protection bend | |
| CN105714008A (en) | Method for replacing blast furnace tuyere medium sleeve | |
| CN107056039B (en) | Utilize the device of liquid blast furnace production mineral wool | |
| CN103788966A (en) | High-temperature resistant expansion joint for dry quenching | |
| CN202968610U (en) | Variable frequency electric furnace for smelting and reducing metal and non-metal in mineral by pyrogenic process | |
| KR20120043391A (en) | The melting furnace which comprises a cooling equipment for slag discharging hole | |
| CN112410500B (en) | Smoke and dust anti-overflow device, movable smoke cover and converter steelmaking equipment | |
| CN210945670U (en) | Electric furnace body for smelting steel slag | |
| CN202836193U (en) | Low pollution lead smelting furnace heating device | |
| CN204574787U (en) | A kind of safe heat insulation type intermediate frequency furnace | |
| CN204128368U (en) | Melting furnace bell | |
| CN203807530U (en) | Copper cast water jacket for fuming furnace | |
| CN204621065U (en) | A kind of clean type insulation ladle | |
| CN204211788U (en) | There is the fuming furnace of collection lead-expelling function | |
| CN204311116U (en) | A kind of insulation fire cabinet of volatile smelting stove | |
| CN207501653U (en) | A kind of electric arc furnaces for being equipped with L-type water cooled furnace wall | |
| CN202177297U (en) | Spraying water cooling furnace wall | |
| CN203837495U (en) | Water-cooling titanium slag electric furnace nozzle | |
| CN107830727B (en) | Arc furnace with L-shaped water-cooled furnace wall | |
| CN203216288U (en) | Buried double-layer pipe cast copper water jacket for prolonging service life of large-scale ferronickel electric furnace | |
| CN207134173U (en) | A kind of saturable reactor damping resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
|
| CX01 | Expiry of patent term |