CN106513648A

CN106513648A - Aluminum alloy furnace

Info

Publication number: CN106513648A
Application number: CN201611100832.6A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-05
Filing date: 2016-12-05
Publication date: 2017-03-22

Abstract

The invention relates to an aluminum alloy furnace. The aluminum alloy furnace comprises a liquid transfer chute, a mechanical pump, a ceramic filter plate, a refining degassing device, an aluminum liquid level detecting device, a furnace body, a top heating device or a bottom heating device, a charging opening and a furnace door. During usage, the furnace door is opened, then aluminum alloy liquid or solid aluminum alloy is added into the furnace body through the charging opening, heated to set process temperature through the top heating device or the bottom heating device, subjected to dehydrogenation through the refining degassing device, filtered through the ceramic filter plate so that solid impurities can be removed, and then lifted through the mechanical pump, the lifted aluminum alloy liquid flows through the liquid transfer chute to enter a casting device, and dynamic accurate compensation of quantitative accuracy of the mechanical pump is performed through the liquid level detected by the aluminum liquid level detecting device. The aluminum alloy furnace, namely a pouring furnace, can provide high-quality melt for aluminum alloy casting, the quantitative accuracy of the mechanical pump after compensation is high, and compared with an aluminum alloy air pressure pouring furnace, the aluminum alloy furnace has the advantages that the furnace body does not need to be sealed, the manufacturing difficulty of the furnace body is low, the cost is low, and the furnace is suitable for large-scale application.

Description

A kind of aluminum-alloys furnace

Technical field：

The present invention relates to a kind of aluminum-alloys furnace, is that aluminum alloy gravity casting, high-pressure casting and the fields such as casting of tumbling automatically provide Quantitative accurately high-quality aluminum alloy melt, belongs to aluminium alloy casting quantitative pouring field.

Technical background：

In aluminium alloy casting process, need for a certain amount of aluminium alloy melt to pour into specific mold cavity.

At present, in aluminium alloy quantitative pouring field, low side mainly by arranging alloy holding furnace beside casting unit, A certain amount of aluminium alloy melt is dipped by artificial operation baler, Jing artificial conveyances and running gate system is poured into；It is extensive at present What is generally used is that Robot actions are scooped after Robot actions baler dips a certain amount of aluminium water from alloy holding furnace Spoon carry out aluminium alloy melt transmission and cast, the process heat scatter and disappear it is larger, take it is longer, often change casting mould after need from New to adjust baler water withdrawal, regulation process is numerous and diverse, and baler service life is shorter, and replacing maintenance cost is considerable, soup feeding machine tool hand getting Purchase expense is also higher；And it is high-end it is main quantitative pouring is carried out by press pouring furnace, press pouring furnace is needed to furnace chamber top It is passed through drying compressed air to be pressurizeed, aluminium water is extruded from stalk, so press pouring furnace needs to enter whole body of heater Row sealing, the making to body of heater have high demands, and need to work out complicated quantitative pouring program to high-precision pressure pouring element Carry out precise control and realize that accurate quantification is poured into a mould, using press pouring furnace, poring rate is fast, and quantitative accuracy is high, aluminium alloy Melt oxidation is few, and these pressure pouring elements are generally press pouring furnace producer self-developing at present, and technology barriers cause this A little elements are difficult to purchase in market, so press pouring furnace technical threshold is very high at present, are currently undertaken by press pouring furnace exploitation Domestic manufacturer has not been achievable press pouring furnace and sells on a large scale, and current technology is more ripe to be wholly foreign-owned venture brand, Equipment price is expensive, in addition, because each quantitative pouring is both needed to be filled with smelting furnace furnace chamber a large amount of compressed airs being dried, pouring into a mould every time After the completion of again need for major part in furnace chamber to be heated to high temperature（More than 600 DEG C）Compressed air discharges out of the furnace, long term frequent work, Compressed air usage amount is big, and the heat taken away in discharge process is also big.And the stalk of press pouring furnace and it is both needed to by liquid pipe Using import brand high intensity glue aluminium ceramics, expensive, service life is usually no more than 3 months, cause consumables cost compared with Height, above-mentioned reason result in aluminium alloy press pouring furnace and be difficult to extensive popularization.

The content of the invention：

The purpose of the present invention is the problem existed for current three kinds of situations of above-mentioned aluminium alloy quantitative pouring, and exploitation one kind is relatively low to adopt The aluminium alloy quantitative pouring stove of purchase cost and working service cost, reaches the advantage for fully realizing aluminium alloy press pouring furnace, and Overcome its inferior position.Consider that the quantitative pouring of magnesium alloy fused mass up till now is completed using mechanical pump in a large number, but magnesium alloy fused mass is adopted Mechanical pump, using without nickel heat-resisting steel making, it is minimum without solubility of the nickel steel iron in magnesium alloy fused mass, also hardly There is chemical reaction with Serum Magnesium, so the mechanical pump of heat resisting steel in magnesium alloy fused mass can be used and not damaged for a long time, and aluminium Alloy physical and chemical performance unique property, under molten condition, which almost can form alloy with all other metal reaction, cause other Metal all can be by aluminium alloy melt corrode in being immersed in high temperature aluminium alloys melt, and heat resisting steel is soaked in aluminium alloy melt, can quilt Totally, so the mechanical pump being immersed in aluminium alloy melt directly can not be made using metal material, this is also to be to corrode quickly The pass that the mechanical pump pouring type what pouring magnesium-alloy quantitatively stove is generally adopted also is not used on aluminium alloy smelting furnace at present Key reason, so the key of exploitation aluminum alloy machinery pump quantitative pouring stove is exploitation aluminum alloy machinery quantitative pouring pump.

In order to reach above-mentioned purpose, the mentality of designing of the present invention is：A kind of mechanical pump, the machine are made using nonmetallic materials Tool pump should not occur corrode reaction with aluminium water, be provided simultaneously with high elevated temperature strength, viscous aluminium, anti-oxidant, shaking property of heat resistanceheat resistant good（Many times of Jing It is extremely cold very hot and do not rupture）The characteristic such as good with machining property.With succeeding in developing for aluminum alloy machinery pouring pump, various aluminium Mechanical pump quantitative pouring is capable of achieving on alloy melting furnace.Determine additionally, due to mechanical pump quantitative performance, mechanical revolution speed is the same In the case of, under same time, mechanical pump pours fluence and can change with the change of mechanical pump aluminium water extraction rise, and quantitative pouring In stove, the height of aluminium water level is changed with charging and the change of cast aluminum water, so to realize standard quantitative every time Really, need accurately to measure the height of aluminium liquid liquid level in real time, smelting furnace control system need to be according to the liquid level of measurement, control The running parameter of pouring pump, so as to realize that cast is quantitative accurately every time.

According to above-mentioned design philosophy, institute's invention aluminum-alloys furnace operation principle is as follows（See Fig. 1）：

The aluminum-alloys furnace invented includes turning liquid chute（1）, mechanical pump（2）, ceramic filter plate（3）, refining depassing unit（4）、 Aluminium liquid liquid level detection device（5）, body of heater（6）, top heater（7）With bottom heater（8）, charge door（9）And fire door（10）.

This aluminium alloy smelting furnace function is as follows：During work, fire door is opened（10）, from charge door（9）Add aluminium alloy liquid or Solid-state furnace charge, furnace charge Jing tops heater（7）Or bottom heater（8）After temperature adjustment is dissolved in heating, aluminium alloy melt is refined to be removed Device of air（4）Dehydrogenation and ceramic filter plate（3）After slagging-off, mechanical pump（2）Lift aluminium alloy melt and flow through and turn liquid chute（1）It is laggard Enter casting device, push up heater（7）The energy for adopting can be electric ＆ gas.Mechanical pump（2）Quantitative accuracy by aluminium liquid liquid Level detecting apparatus（5）The liquid level line of detection（11）Height carry out real-Time Compensation, reach accurate quantification cast, aluminium liquid level sensing Device（5）It can be laser range finder.

It is of the invention compared with existing foreign capitals brand aluminium alloy press pouring furnace, have following effect：

1st, mechanical pump is adopted, body of heater is required without air-tightness, body of heater is simple to manufacture, and low cost is adapted to be grafted onto various aluminium alloys On smelting furnace；

2nd, mechanical pump quantitative pouring stove can carry out heating temperature adjustment using gas-operated thermal bath facility, and press pouring furnace is due to in burner hearth The high-precision control of air pressure and seal request, can only adopt electrical heating at present；

3rd, mechanical pump quantitative pouring stove need not adopt a large amount of drying compressed airs and discharge high temperature compressed air, save gas and use Cost；

4th, mechanical pump quantitative pouring stove can facilitate and rotary degassing device and ceramic filter plate are installed in stove because requiring without air-tightness To improve the quality of aluminium alloy melt, be conducive to ensureing the quality of aluminium alloy castings, and press pouring furnace is due to airtight requirement, it is difficult To install above-mentioned part, and cause long-time blowing out or compressed air drying not in place when unexpected, aluminium is closed in causing body of heater Golden melt inhales hydrogen in a large number, and is difficult to process, and is easily caused foundry goods and pin hole occurs, affects cast properties；

5th, mechanical pump quantitative pouring stove working service low cost, without the need for needing Jing often to change due to high temperature as press pouring furnace The oven door sealing circle of damage, often changes the expensive ceramic lift tube of import and by liquid pipe without the need for Jing, and mechanical pump is only needed using domestic Material makes, and low cost is easily purchased；

6th, purchase cost is low, makes simple, without technology barriers, is adapted to extensive utilization.

Description of the drawings：

A kind of aluminum-alloys furnace fundamental diagram front view of the accompanying drawing 1 for the present invention：

In figure：1 turn of liquid chute；2 mechanical pumps；3 ceramic filter plates；4 refining depassing units；5 aluminium liquid level sensings Device；6 bodies of heater；7 top heaters；8 bottom heaters；9 charge doors；10 fire doors；11 liquid level lines；

Specific embodiment：

Below by taking mechanical pump insulated pouring stove as an example, the aluminum-alloys furnace schematic diagram shown in Fig. 1 is described further：

When aluminum-alloys furnace is produced, bin gate is opened（10）, aluminium water or aluminium ingot are added into body of heater from charge door manually or mechanically（6） It is interior, push up heater（7）Or bottom heater（8）Aluminum melt is heated and temperature adjustment, when the pouring temperature of needs is reached, Aluminium alloy melt flows through refining depassing unit（5）Dehydrogenation and ceramic filter plate（3）After slagging-off, aluminium liquid liquid level detection device（5）Will The liquid level line for detecting（11）Height number is input to control system, and control system provides the quantitative pouring of mechanical pump by calculating Parameter, control machinery pump（2）Lift body of heater（6）In aluminium alloy melt height, after lifting aluminium alloy melt Jing brush do not glue Aluminium paint turns liquid chute（1）Into casting device die cavity, casting process is completed；

The aluminum-alloys furnace simple structure, convenient operating maintenance, low cost of manufacture, working service low cost, it is possible to provide high-quality Aluminium alloy melt, can meet the quantitative pouring requirement of different aluminum alloys casting, and creative technology path overcomes pressure pouring The technology barriers and high price of stove are monopolized, can large-scale promotion.

Claims

1. a kind of aluminum-alloys furnace, it is characterised in that it includes turning liquid chute（1）, mechanical pump（2）, ceramic filter plate（3）, refining remove Device of air（4）, aluminium liquid liquid level detection device（5）, body of heater（6）, top heater（7）With bottom heater（8）, charge door（9） And fire door（10）.

2. aluminum-alloys furnace according to claim 1, it is characterised in that its quantitative pouring is completed by mechanical pump (2), mechanical pump （2）During quantitative pouring with aluminium liquid contact portion using elevated temperature strength it is high, not glue aluminium, anti-oxidant, shaking property of heat resistanceheat resistant good（Jing is more It is secondary extremely cold very hot and do not rupture）Nonmetallic materials good with machining property make, the material can for anti-oxidant high-strength graphite, Silicon nitride and silicon nitride bonded silicon carbide.

3. aluminum-alloys furnace according to claim 1, it is characterised in that open fire door（10）, from charge door（9）Aluminium is added to close Golden liquid or solid-state furnace charge, furnace charge Jing tops heater（7）Or bottom heater（8）After temperature adjustment is dissolved in heating, refined degasification Device（4）Dehydrogenation and ceramic filter plate（3）After slagging-off, by mechanical pump（2）Lifting is flowed through and turns liquid chute（1）Casting dress is entered afterwards Put, push up heater（7）The energy for adopting can be electric ＆ gas.

4. aluminum-alloys furnace according to claim 1, mechanical pump（2）Pour fluence by aluminium liquid liquid level detection device（5）Inspection The liquid level line of survey（11）Highly carry out pouring fluence compensation, realize accurate quantification, aluminium liquid liquid level detection device（5）It can be laser ranging Instrument.

5. aluminum-alloys furnace according to claim 1, it is characterised in that charge door（9）Also it is slag hitting mouth.