CN203443338U - Vacuum smelting device - Google Patents
Vacuum smelting device Download PDFInfo
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- CN203443338U CN203443338U CN201320536593.4U CN201320536593U CN203443338U CN 203443338 U CN203443338 U CN 203443338U CN 201320536593 U CN201320536593 U CN 201320536593U CN 203443338 U CN203443338 U CN 203443338U
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- tank body
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- cooler
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model belongs to the technical field of vacuum furnace external refining equipment, and particularly relates to a vacuum smelting device. According to the technical scheme, the vacuum smelting device comprises a cylindrical tank body, spherical seal heads are arranged at the upper portion and the lower portion of the tank body, an air input channel is arranged in the middle of one side of the tank body, a dust discharging device is arranged at the bottom of a tank, an outlet pipeline is arranged at the central position of the upper portion of the tank body, and the outlet pipeline is used for being connected with a mechanical vacuum pump system, a cooler is arranged in the tank body, an inlet and an outlet of the cooler are formed in the tank body, and the device integrates the functions of gas cooling, dust removing and pre-vacuumizing. After the dust-containing and high temperature gas is synchronously preprocessed by the mechanical vacuum pump system, the vacuum smelting device can normally operate, so that the steel liquid purifying and processing device is achieved through the convenient and efficient mechanical vacuum pump system.
Description
Technical field
The utility model belongs to the technical field of vacuum external refining equipment, is specially a kind of vacuum metallurgy equipment.
Background technology
At metal material, smelt in production process, for the material that guarantees to produce meets performance requirement, in smelting process, will carry out sublimate processing to molten metal, the technical process such as the removing of the accurate control by chemical composition, non-metallic inclusion, vacuum outgas finally guarantees the cleanliness factor of material.As the production requirement of non-crystalline material: by the chemical composition of formula requirement material evenly, accurately.Non-metallic inclusion can not exceed standard, in every hundred square millimeters of visual fields: to be 1. mingled with above quantity be 0 to 5 μ m; 2. 5 μ m are mingled with quantity 2-3 below.Require the content of gas as far as possible low, general control is at H≤2ppm, O≤20ppm, N≤40ppm.By these control requirements to mother metal, in the time of can realizing the band of operation spray thereafter process metal liquid by nozzle slot, do not produce obstruction, minimizing is mingled with and gas micropore exists the impact on amorphous band toughness in strip, and the impact on amorphous band magnetic property.
Such requirement makes conventional at present intermediate frequency (IF) smelting Processes and apparatus cannot meet the specification requirement of producing amorphous mother metal, the high-temperature dust-containing flue gas that current mechanical vacuum pump assembly cannot directly produce in application of vacuum process molten metal vacuumizes processing, therefore the producer that make investment construction, has a mid-frequency melting furnace cannot produce qualified amorphous mother metal, thereby cause the very large wasting of resources, cause very large economic loss also to the producer with mid-frequency melting furnace.
The producer that produces at present non-crystalline material all needs great number investment vacuum smelting equipment, owing to producing high temperature, dusty gas in VD stove, VOD stove processing procedure, and adopt current VOD, VD mode to carry out application of vacuum, need investment construction steam boiler, multistage steam injecting type vacuum system, dust pelletizing system, cooling system, system complex is huge, space hold is many, and investment is large.
Summary of the invention
The purpose of this utility model is the problem for above-mentioned existence, and a kind of vacuum metling equipment of the production clean steel that can be used in conjunction with middle-size and small-size especially mid-frequency melting furnace is provided.Employing comprises tank body, and described tank body is cylindric, and tank body adopts dome head up and down; A middle side part setting at tank body is installed into wind pipeline, and installation discharge apparatus is set at the bottom of tank, in tank body center upper portion position, outlet conduit is set, and described outlet conduit is used for connecting mechanical vacuum pump system; In tank interior, installation cooler is set, is provided with the technical scheme of import and the outlet of cooler on tank body, this equipment collection gas cooled, dedusting, extracting vacuum function is integrated in one in advance; Mechanical vacuum pumping system can normally be moved dust-laden, high-temperature gas after the Synchronous Pre through this equipment is processed, with convenient efficient mechanical vacuum pumping system, realize the sublimate treatment facility of molten steel.
The technical solution of the utility model is:
An equipment, comprises tank body, it is characterized in that, described tank body is cylindric, and tank body adopts dome head up and down; A middle side part setting at tank body is installed into wind pipeline, and installation discharge apparatus is set at the bottom of tank, in tank body center upper portion position, outlet conduit is set, and described outlet conduit is used for connecting mechanical vacuum pump system; In tank interior, installation cooler is set, on tank body, is provided with import and the outlet of cooler.
Feature of the present utility model also has:
Described tank body (1) adopts stainless steel, carbon steel material.
Described tank body adopts stainless steel clad plate, and inner surface is heat-resistant anticorrosive stainless steel, and outer surface is straight carbon steel.
Described intake stack (3) is horizontally disposed with along tank skin tangential direction, and caliber is Φ 30-Φ 200mm.
In end socket junction, tank body top, flange and sealing ring are set, as internal unit, install and manhole use.
On the pipeline between outlet conduit and mechanical vacuum pumping system, air filter is set, valve is also set.
The operating pressure of described tank body is 1000Pa～1x10
-2pa; The volume of tank body is that ladle liquid level is to 3～8 times of institute's complementary space between vacuum clad.The volume of tank body, the size according to metal bath surface in processed ladle to vacuum tank institute complementary space determines.
Described cooler is water cooling heat exchanger, is specially coil exchanger or ductwork type heat exchanger.
Vacuum meter is set on tank body.
Vacuum metling equipment of the present utility model is applied to metallurgical vacuum processing technique, also can be for food processing field, and need in process procedure that vacuum cooled dedusting is relevant.
The beneficial effects of the utility model are:
Vacuum metling equipment of the present utility model, collection gas cooled, dedusting, extracting vacuum function is integrated in one in advance, in tank interior, cooling system is set, and design intake stack and tank body and form whirlwind gravity depositing dust function, mechanical vacuum pumping system can after processing, the Synchronous Pre through this equipment normally be moved dust-laden, high-temperature gas, with convenient efficient mechanical vacuum pumping system, realize the sublimate of molten metal, de-be mingled with, degasification technique.
At tank wall middle part, arrange and be installed into wind pipeline, along tank skin tangential direction, be horizontally disposed with, the flue gas entering along pipeline and dust tangentially enter in tank along tank skin, larger particles discharge apparatus at the bottom of spiral drops to tank under the effect of centrifugal force and gravity; Because pipeline section is little, and tank body diameter of section is larger, ducted gas enters instantaneous deceleration after tank body, dust just sinks down into tank base discharge pit along tube wall and accumulates under Action of Gravity Field, can complete after abolishing vacuum and unload ash at smelting process, this utility model has realized the dustproof function of dusty gas, need not deduster be set separately, has saved taking of equipment investment and space; On air outlet pipeline, air filter is set, further the micronic dust in filtering gas.
In a word, equipment of the present utility model is processed dust treatment, high-temperature gas cooling, improve molten steel Vacuum Degassing Process efficiency and is integrated in one, realized the technological equipment that clean steel adopts mechanical vacuum system in producing in vacuum degassing process process, to middle-size and small-size especially intermediate frequency furnace smelt clean steel provide a kind of invest little, take up an area few equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 A-A to sectional structure schematic diagram;
Wherein, 1 is tank body, and 2 is cooler, and 3 is intake stack, and 4 is outlet conduit, and 5 is sealing ring, and 6 is air filter, and 7 is discharge apparatus, and 8 is import, and 9 is outlet, and 10 is vacuum meter, and 11 is valve.
The specific embodiment
Below by specific embodiment, the technical solution of the utility model is described in detail.
The intermediate frequency furnace smelting equipment of 2 tons of take is example.
Size according to molten steel in its vacuum ladle to institute's complementary space between vacuum clad, the physical dimension of design vacuum metling equipment tank body, if ladle diameter is Φ 1260mm, furnace lining internal diameter is Φ 720mm, liquid level to clad height is 1000mm, and its complementary space is about 0.9m
3.
Tank body 1 internal diameter of design vacuum metling equipment is Φ 1200mm, is highly 3000mm, and tank body volume is about 3.5 m
3.
This vacuum metling equipment: comprise tank body 1, described tank body 1 is cylindric, and tank body 1 adopts dome head up and down; A middle side part setting at tank body 1 is installed into wind pipeline 3, caliber Φ 100mm, along tank skin tangential direction, be horizontally disposed with, make the flue gas and the dust that along intake stack 3, enter tangentially enter in tank along tank skin, larger particles discharge apparatus 7 at the bottom of spiral drops to tank under the effect of centrifugal force and gravity arranges discharge apparatus 7 is installed at the bottom of tank, in tank body 2 center upper portion positions, outlet conduit 4 is set, by gas output tank body after dedusting, cooling, described outlet conduit 4 is for connecting mechanical vacuum pump system; In tank interior, arrange cooler 2 is installed, on tank body, be provided with import 8 and the outlet 9 of cooler 2.
Described tank body 1 adopts stainless steel clad plate, and inner surface is heat-resistant anticorrosive stainless steel, and outer surface is straight carbon steel.In tank body 1 end socket junction, top, flange and sealing ring 5 are set, as internal unit, install and manhole use.
Because intake stack 3 cross sections only have Φ 100mm, and tank diameter is Φ 1200mm, and section ratio is classified 12 times as, and ducted gas enters instantaneous deceleration after tank body, dust sedimentation under Action of Gravity Field.
On the externally ported pipeline 4 of tank body, air filter 6 is set, valve 11 is also set, the micronic dust in gas is further filtered, and then be connected to mechanical vacuum pumping system by pipeline.
Described cooler 2 is water cooling heat exchanger, is specially coil exchanger or ductwork type heat exchanger.In order to entering the high-temperature gas cooling in tank body, make Wen Du≤60 ℃, exit, make it reach the gas temperature that oil-sealed rotary pump allows.In addition, this cooler can use closed liquid cooling system or other cooling pattern, and cooling medium can be water or other media.
Purposes and the using method of this utility model vacuum metling equipment are:
Before the molten clear temperature raising of intermediate frequency furnace molten steel prepares to come out of the stove, start the forevacuum system operation of vacuum metling equipment: close the valve between vacuum tank and vacuum metling equipment simultaneously, open mechanical vacuum pump system unit in advance to vacuum metling equipment tank body extracting vacuum, make the interior vacuum of tank body be less than state, the pressurize of 67Pa; Open water cooling system, makes in tank body 1 cooler 2 in refrigerating state.After ladle hangs in vacuum tank, connect bottom argon gas pipeline (pre-Argon can be carried out, then floating field trash closes argon gas), cover vacuum container cover and form air-tight state, open the valve between vacuum tank and vacuum metling equipment, gradually open-minded, in vacuum tank in gas flow vacuum metling equipment tank body, vacuum in vacuum tank is progressively improved, in ladle, molten steel is due to the reduction of outside dividing potential drop, the gas (H, O, N, CO) being originally dissolved in molten steel progressively rises and deviates from liquid level, and molten steel is in vacuum outgas state.Make in vacuum tank vacuum be less than and equal 67Pa state, keep pressure (can crackly open BOTTOM ARGON BLOWING auxiliary degassed, go to be mingled with).Vacuum unit can continue to start or after vacuum tank and vacuum metling equipment reach balance, restart secondary operation, until reach 67Pa pressurize, the degassed processing time is about 25min.
After Fruit storage completes; close pipeline valve; open vacuum-breaking valve nitrogen vacuum breaker; at this moment vacuum metling equipment tank body can continue to keep 67Pa vacuum state; the Fruit storage of next stove molten steel of standby; (can close the valve on outlet conduit; keep vacuum in vacuum metling equipment tank body; mechanical pump standby is shut down) follow-up processing just need not start to vacuumize from atmosphere pressure state; thereby significantly improved the effective rate of utilization of vacuum system; reduce operating cost, improve vacuum degassing process efficiency.
Vacuum metling equipment of the present utility model is applied to metallurgical vacuum processing technique, also can be for food processing field, and need in process procedure that vacuum cooled dedusting is relevant.
Above to detailed introduction of the present utility model; for one of ordinary skill in the art; thought according to the utility model embodiment; all have and can change part in specific embodiments and applications; in sum, this description should not be construed as to restriction of the present utility model, in addition; the improvement of carrying out within the scope of innovative idea of the present utility model or change are also all included in the content of this claim, all belong to the content of this patent protection.
Claims (9)
1. a vacuum metling equipment, comprises tank body (1), it is characterized in that, described tank body (1) is cylindric, and tank body (1) adopts dome head up and down; A middle side part setting at tank body (2) is installed into wind pipeline (3), arranges discharge apparatus (7) is installed at the bottom of tank, in tank body (2) center upper portion position, outlet conduit (4) is set, and described outlet conduit (4) is for connecting mechanical vacuum pump system; In tank interior, arrange cooler (2) is installed, on tank body, be provided with import (8) and the outlet (9) of cooler (2).
2. vacuum metling equipment according to claim 1, is characterized in that, described intake stack (3) is horizontally disposed with along tank skin tangential direction, and caliber is Φ 30-Φ 200mm.
3. vacuum metling equipment according to claim 1, is characterized in that, described tank body (1) adopts stainless steel, carbon steel material.
4. vacuum metling equipment according to claim 1, is characterized in that, described tank body (1) adopts stainless steel clad plate, and inner surface is heat-resistant anticorrosive stainless steel, and outer surface is straight carbon steel.
5. vacuum metling equipment according to claim 1, is characterized in that, air filter (6) is set on the pipeline between outlet conduit (4) and mechanical vacuum pumping system, and valve (11) is also set.
6. vacuum metling equipment according to claim 1, is characterized in that, the operating pressure of described tank body is 1000Pa～1x10
-2pa; The volume of tank body is that ladle liquid level is to 3～8 times of institute's complementary space between vacuum clad.
7. vacuum metling equipment according to claim 1, is characterized in that, described cooler (2) is water cooling heat exchanger, is specially coil exchanger or ductwork type heat exchanger.
8. vacuum metling equipment according to claim 1, is characterized in that, vacuum meter (10) is set on tank body (1).
9. vacuum metling equipment according to claim 1, is characterized in that, in end socket junction, tank body (1) top, flange and sealing ring (5) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536593.4U CN203443338U (en) | 2013-08-31 | 2013-08-31 | Vacuum smelting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536593.4U CN203443338U (en) | 2013-08-31 | 2013-08-31 | Vacuum smelting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443338U true CN203443338U (en) | 2014-02-19 |
Family
ID=50094378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320536593.4U Expired - Fee Related CN203443338U (en) | 2013-08-31 | 2013-08-31 | Vacuum smelting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438705A (en) * | 2013-08-31 | 2013-12-11 | 济钢集团有限公司 | Vacuum smelting equipment and application |
-
2013
- 2013-08-31 CN CN201320536593.4U patent/CN203443338U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438705A (en) * | 2013-08-31 | 2013-12-11 | 济钢集团有限公司 | Vacuum smelting equipment and application |
| CN103438705B (en) * | 2013-08-31 | 2016-03-02 | 济钢集团有限公司 | A kind of vacuum metling equipment and application |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20160831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |