CN105057634B - A kind of method and device of the quantitative molten metal of vacuum pumping - Google Patents
A kind of method and device of the quantitative molten metal of vacuum pumping Download PDFInfo
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- CN105057634B CN105057634B CN201510427123.8A CN201510427123A CN105057634B CN 105057634 B CN105057634 B CN 105057634B CN 201510427123 A CN201510427123 A CN 201510427123A CN 105057634 B CN105057634 B CN 105057634B
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Abstract
The method that the present invention discloses a kind of quantitative molten metal of vacuum pumping, including：(1) take soup device to be moved to above smelting furnace vacuum quantitative, open vacuum quantitative and take the jug used for heating up water component of soup device to take soup mouthful；(2) vacuum quantitative is taken the test of soup device and fill inert gas to jug used for heating up water component；(3) continue to explore downward to immersion molten metal, when jug used for heating up water gas pressure reaches preset pressure P1When, judge to reach noodle soup positions, and calculated with this and take soup position, take soup position then to stop test when vacuum quantitative soup device is reached, stop filling inert gas to jug used for heating up water component；(4) jug used for heating up water component is vacuumized, when reaching the corresponding pressure P of aimed quality2When, stopping vacuumizes and closes jug used for heating up water component；(5) rise jug used for heating up water component and be sent to and feed soup point, opening takes soup mouthful, is again filled with inert gas, discharges molten metal.Invention additionally discloses a kind of device of the quantitative molten metal of vacuum pumping.Using the present invention, with high precision, take metal liquid oxidation few, high purity advantage.
Description
Technical field
The present invention relates to the method for casting technology field, more particularly to a kind of quantitative molten metal of vacuum pumping；Correspondingly, originally
Invention further relates to a kind of device of the quantitative molten metal of vacuum pumping.
Background technology
At present, in various Die Casting Industries, it is common to use be that the mode that soup ladle ladles is carried out to soup, it is this to take soup mode
Exist that molten metal is oxidized easily, top layer low-quality soup is easily scooped to, soup accuracy of measurement is low, first setting takes soup amount complexity etc.
Shortcoming.In order to overcome the existing defect for taking soup mode, Chinese patent CN103153501A discloses the device for measuring melt
With method and the patent of invention of casting machine, measuring container drops in smelting furnace, and melt opening-closer of measuring container
Part terminates or detects to reach in measuring container by weight sensor to make a reservation for by driving open position until the predetermined time cycle
Filling melt amount when, melt stops from smelting furnace intake into measuring container, and the melt of wherein measuring container opens-close device
By driving blocking position.
However, also there is following defect in above-mentioned existing patent：
1) method that the weight sensor surveys liquid level by buoyancy can not monitor the closed situation in inside of jug used for heating up water, judge vacuum
System whether gas leakage.
2) when taking soup amount larger, the liquid level of measuring container inner metal liquid is higher, and weight sensor is bigger by heat radiation,
But the use environment temperature of general weight sensor is -35 DEG C~70 DEG C, easily more than temperature in use scope so that weight is sensed
Device error in dipping increases.
3) in general, weight sensor is using relatively accurately in the range of the 20%~80% of range, and this causes in choosing
Can not be too big with weight sensor range, according to structure and the molten metal weight drawn, the range typically selected be 50kg~
Otherwise trueness error just increases 250kg, and cost also increases.According to the performance of each weight sensor of in the market, weight sensor
Safe overload scope is 1.5 times of 150%FS, i.e. full scale；Extreme overload scope is 3 times of 300%FS, i.e. full scale.Such as
Fruit in use, is repaired to jug used for heating up water part, for example, remove the aluminium slag of jug used for heating up water entrance, the screw to jug used for heating up water superstructure loosening
Progress such as fastens at the operation, due to the amplification of the arm of force, easily the ultimate load more than weight sensor, causes weight sensor
Damage, it is necessary to which departing from jug used for heating up water part with weight sensor could be repaired, or design antioverloading structure.And if do not made
With weight sensor, then the rigidity of device, intensity can then be significantly increased.
The content of the invention
The technical problems to be solved by the invention are that, there is provided a kind of method of the quantitative molten metal of vacuum pumping, can improve
Soup precision is taken, takes metal liquid oxidation few, it is simple to operate.
Correspondingly, the technical problems to be solved by the invention be there is provided a kind of device of the quantitative molten metal of vacuum pumping,
With high precision, take metal liquid oxidation few, high purity and advantage easy to maintenance.
In order to solve the above-mentioned technical problem, a kind of method of the quantitative molten metal of vacuum pumping, comprises the following steps：
(1) soup device is taken to be moved to above metal smelter vacuum quantitative, the vacuum quantitative takes the soup device to include jug used for heating up water
Component, open jug used for heating up water component takes soup mouthful；
(2) vacuum quantitative is taken the test of soup device and fill inert gas to jug used for heating up water component；
(3) vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, is set in advance when jug used for heating up water component gas pressure reaches
Fixed pressure P1When, then judge to reach noodle soup positions, and calculated according to noodle soup position and take soup position, when vacuum quantitative soup device
Arrival takes soup position then to stop test, stops filling inert gas to jug used for heating up water component；
(4) jug used for heating up water component is vacuumized makes the molten metal in jug used for heating up water component highly rise, when reaching that aimed quality is corresponding
Pressure P2When, then judge to take soup to amount, now stop vacuumizing and instantaneously closing jug used for heating up water component；
(5) rise jug used for heating up water component and be sent to jug used for heating up water component and feed soup point, that opens jug used for heating up water component takes soup mouthful, again to jug used for heating up water
Component fills inert gas to destroy the vacuum state of jug used for heating up water component, discharges molten metal.
As the improvement of the method for the quantitative molten metal of above-mentioned vacuum pumping, the step (4) includes：Vacuumizing makes jug used for heating up water group
Molten metal in part highly rises, and determines to draw the quality of molten metal by pressure, as pressure P2During correspondence aimed quality, then
Judgement takes soup to amount, now stops vacuumizing and instantaneously closing jug used for heating up water component.It is used as the side of the quantitative molten metal of above-mentioned vacuum pumping
The improvement of method, the step (3) includes：
Vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, the built-in pressure of attentioning of jug used for heating up water component, and obtains jug used for heating up water
Component current pressure values；
Current pressure values and pressure P set in advance1Analysis contrast is done, when current pressure values are equal to pressure set in advance
P1When, judge that vacuum quantitative takes soup device to reach noodle soup position；
Calculated according to noodle soup position and take soup position, taken soup position then to stop test when vacuum quantitative soup device is reached, stop
Inert gas is filled to jug used for heating up water component.
Correspondingly, the present invention also provides a kind of device of the quantitative molten metal of vacuum pumping, including：
Mobile unit, for taking soup device to be moved to above metal smelter vacuum quantitative, the vacuum quantitative takes soup to fill
Put including jug used for heating up water component, that opens jug used for heating up water component takes soup mouthful；
Test unit is inflated, for vacuum quantitative to be taken into the test of soup device and inert gas is filled to jug used for heating up water component；
Soup position identifying unit is taken, vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, when jug used for heating up water component gas pressure
Power reaches pressure P set in advance1When, then judge to reach noodle soup positions, and calculated according to noodle soup position and take soup position, work as vacuum
Quantitative soup device, which is reached, takes soup position then to stop test, stops filling inert gas to jug used for heating up water component；
Soup unit is taken, the molten metal in jug used for heating up water component is highly increased for being vacuumized to jug used for heating up water component, when reaching target
The corresponding pressure P of quality2When, then judge to take soup to amount, now stop vacuumizing and instantaneously closing jug used for heating up water component；
Soup unit is fed, soup point is fed for rising jug used for heating up water component and being sent to jug used for heating up water component, that opens jug used for heating up water component takes soup mouthful,
Fill inert gas to destroy the vacuum state of jug used for heating up water component to jug used for heating up water component again, discharge molten metal；
The mobile unit, inflation test unit, soup position identifying unit is taken, soup unit is taken, feeds soup unit and be sequentially connected and connect.
It is described to take the soup unit to include as the improvement of the device of the quantitative molten metal of the vacuum pumping：
First pressure value acquiring unit for obtaining jug used for heating up water component current pressure values；
For by current pressure values pressure P corresponding with aimed quality2Analysis contrast is done, when current pressure values are equal to target
The corresponding pressure P of quality2When, then judge the first identifying unit for taking soup to amount.
It is described to take the soup unit to include as the improvement of the device of the quantitative molten metal of the vacuum pumping：
First pressure value acquiring unit for obtaining jug used for heating up water component current pressure values；
For current pressure values to be converted into the current pressure quality conversion unit for drawing quality of molten metal；
Analysis contrast is done for will currently draw quality of molten metal and aimed quality, is equal to when currently drawing quality of molten metal
During aimed quality, then the second identifying unit for taking soup to amount is judged.
As the improvement of the device of the quantitative molten metal of the vacuum pumping, the pressure value acquiring unit is pressure sensing
Device, the pressure sensor is located on jug used for heating up water component to detect gas pressure in jug used for heating up water.
As the improvement of the device of the quantitative molten metal of the vacuum pumping, the inflation test unit includes：
Test unit, for vacuum quantitative to be taken into soup device test；
Inflation unit, for filling inert gas to jug used for heating up water component.
It is described to take the soup position identifying unit to include as the improvement of the device of the quantitative molten metal of the vacuum pumping：
Second pressure value acquiring unit for obtaining jug used for heating up water component current pressure values；
For by current pressure values and pressure P set in advance1Analysis contrast is done, is preset when current pressure values are equal to
Pressure P1When, judge to reach the 3rd identifying unit of noodle soup position；
The scaling unit of soup position is taken for being calculated according to noodle soup position.
Implement the embodiment of the present invention, have the advantages that：
By functional relation of the method for the invention according to quality m and pressure P, rested on when taking soup and take soup position, then
Atmospheric pressure is less than by soup pressure inside the tank so that molten metal is ascended into jug used for heating up water, reached when measuring gas pressure value in jug used for heating up water
The corresponding P of aimed quality2Value, then can be achieved accurately to take soup.Because pressure sensor is without the liquid level close to smelting furnace, therefore it makes
It is relatively steady with the temperature of environment, it is difficult to exceed temperature in use scope, error is small, high precision, it is to avoid prior art sensor surpasses
Go out and the problem of error in dipping is big is caused using temperature range.Also, entirely take soup process because pressure sensor is monitored all the time
The closed situation in inside in middle jug used for heating up water, can find in time vacuum system or inflation system whether gas leakage, it is highly reliable.
In addition, being drawn molten metal in jug used for heating up water using vacuum, reach hello soup point and discharge again, while using inert gas pair
Jug used for heating up water is carried out inflation or is depressured, and can reduce contact of the molten metal with outside air, molten metal is difficult to be oxidized, and reduces oxide
Produce, impurity is few, purity is high.
Device of the present invention does not install weight sensor, and rigidly eager to do well in everything degree is high for device.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the method for the quantitative molten metal of vacuum pumping of the invention；
Fig. 2 is the structural representation of jug used for heating up water component of the present invention；
Fig. 3 is the structural representation of jug used for heating up water of the present invention；
A kind of structural representation of the device of the quantitative molten metal of vacuum pumping of Fig. 4 present invention；
Fig. 5 is the structural representation of the present invention for inflating test unit；
Fig. 6 is another structural representation of the present invention for inflating test unit；
Fig. 7 for it is of the present invention take soup position identifying unit structural representation；
Fig. 8 is of the present invention to take the first embodiment structural representation of soup unit；
Fig. 9 is of the present invention to take the second embodiment structural representation of soup unit.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, the present invention is made into one below in conjunction with accompanying drawing
It is described in detail on step ground.
The existing mode for generally using soup ladle to ladle is carried out to soup, this to take soup mode to there is molten metal easily quilt
Oxidation, top layer low-quality soup are easily scooped to, soup accuracy of measurement is low, first setting takes the shortcomings of soup quality is complicated.And existing patent
A kind of apparatus and method for measuring melt are disclosed, the loading of melt in measuring container are detected using weight sensor, easily
Beyond more than temperature in use scope so that weighing sensor error in dipping increases, and when being repaired to jug used for heating up water part, due to
The amplification of the arm of force, the easily ultimate load more than weighing sensor, cause weighing sensor to damage.
Therefore, the present invention changes existing method and the soup that takes of device is conceived and structure design, vacuumize, make using to jug used for heating up water
Air pressure in jug used for heating up water is less than external atmosphere pressure, by molten metal toward jug used for heating up water internal pressure under atmospheric pressure effect, the molten metal in jug used for heating up water
Highly rise.
And according to m=ρ × V, it is possible to the quality of jug used for heating up water inner metal liquid is determined, while the internal pressure P=ρ gh of jug used for heating up water.
Understand, take soup quality and the pressure inside jug used for heating up water, jug used for heating up water size existence function relation.Because jug used for heating up water is rule container, thus it is high
Spend between h and volume V there is also functional relation, quality m and pressure P functional relation is can obtain by deriving, thus works as setting
When one target takes soup amount, corresponding pressure inside the tank is can be converted into, and pressure inside the tank can be detected according to pressure sensor, then
When pressure sensor readings reach the pressure of corresponding mass, you can be drawn into setting takes soup quality.And use indifferent gas
Body, which is carried out jug used for heating up water, to be inflated or is depressured, and is conducive to making molten metal not oxidized.
With reference to Fig. 1, the embodiment of the present invention will be illustrated by specific steps：
As shown in figure 1, the method that the present invention provides a kind of quantitative molten metal of vacuum pumping, comprises the following steps：
Vacuum quantitative is taken soup device to be moved to above metal smelter by S100, and the vacuum quantitative takes the soup device to include jug used for heating up water
Component, open jug used for heating up water component takes soup mouthful.
It should be noted that vacuum quantitative takes soup device to contain molten metal jug used for heating up water component including being used for, as shown in Fig. 2 very
The jug used for heating up water component 7 of empty quantitative soup device includes cylinder 73, valve element 72 and jug used for heating up water 71, and cylinder 73 is located at the top of jug used for heating up water 71, valve element
72 in jug used for heating up water 71, and cylinder 73 is connected with valve element 72, and valve element 72 is as the push-and-pull of cylinder 73 can realize closing or open jug used for heating up water
Take soup mouthful 711.
Take soup device to be moved to above metal smelter in vacuum quantitative, be now set as that vacuum quantitative takes the initial of soup device
Position.And in order that molten metal enters in jug used for heating up water 71, it is necessary to cylinder 73 lifts valve element 73, make valve element 72 and take soup mouthful 711 to release
Socket, takes soup mouthfuls 711 to open wide, molten metal can free in and out jug used for heating up water 71, so as to realize that opens jug used for heating up water takes soup mouthful.
S101 makes vacuum quantitative take the test of soup device and fills inert gas to jug used for heating up water component.
Preferably, the step S101 includes：
Vacuum quantitative takes soup device high speed test；
Low speed test is changed to when vacuum quantitative soup device arrival rate toggle bit, and indifferent gas is filled to jug used for heating up water component
Body.
In order that take soup more efficient, accurate, the method for the invention when vacuum quantitative takes the process of soup device test, if
One speed toggle bit of point, vacuum quantitative takes the high speed test when initial position is begun to decline of soup device；When test is cut to speed
During transposition, low speed test is now switched to.It should be noted that the speed toggle bit should take soup device not soak in vacuum quantitative
Enter the position of molten metal, by cooperation at a high speed with the notch speed degree of low speed two, not only save time, raising effect in the early stage of test
Rate, and low speed test is used when close to metal bath surface, be conducive to next step S102 accurately to reach and take soup position.
It should be noted that while low speed test is switched to, inert gas is filled to jug used for heating up water component.
S102 vacuum quantitatives take soup device to continue to explore downward to immersion molten metal, are set in advance when jug used for heating up water component gas pressure reaches
Fixed pressure P1When, then judge to reach noodle soup positions, and calculated according to noodle soup position and take soup position, when vacuum quantitative soup device
Arrival takes soup position then to stop test, stops filling inert gas to jug used for heating up water component.
Specifically, vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, the built-in pressure of attentioning of jug used for heating up water component, and obtains
Take jug used for heating up water component current pressure values；
Current pressure values and pressure P set in advance1Analysis contrast is done, when current pressure values are equal to pressure set in advance
P1When, judge that vacuum quantitative takes soup device to reach noodle soup position；
Calculated according to noodle soup position and take soup position, take soup position then to stop test when vacuum quantitative soup device is reached.
Due to being filled with inert gas, and constantly outwards release inside jug used for heating up water, therefore when the lower end immersion metal of jug used for heating up water
During liquid liquid level, slurry pressure inside the tank is bigger than external atmosphere pressure, forms normal pressure, and now obtaining jug used for heating up water component by pressure sensor works as
Preceding pressure value, as the pressure P for reaching setting1, system judges that vacuum quantitative takes soup device to reach noodle soup position, further according to noodle soup position
Put to calculate and take soup position, take soup position then to stop test when vacuum quantitative soup device is reached.Soup is made using the method for the invention
Tank, which is rested on, takes soup position to take soup, it can be ensured that vacuum quantitative takes soup device smoothly to take soup.
S103 is vacuumized to jug used for heating up water component makes the molten metal in jug used for heating up water component highly rise, when reaching that aimed quality is corresponding
Pressure P2When, then judge to take soup to amount, now stop vacuumizing and instantaneously closing jug used for heating up water component.
S103 concrete schemes, jug used for heating up water component, which is vacuumized, makes the molten metal in jug used for heating up water component highly rise, by pressure come
It is determined that the quality of molten metal is drawn, as pressure P2When the corresponding quality for drawing molten metal is equal to aimed quality, then judge to take soup
To amount, now stop vacuumizing and instantaneously closing jug used for heating up water component.
When molten metal liquid level is immersed in the lower end of jug used for heating up water, start to vacuumize jug used for heating up water component, due to the pressure inside jug used for heating up water
It is smaller than external atmosphere pressure, there is pressure differential, to reach the molten metal outside the air pressure balance inside and outside jug used for heating up water, jug used for heating up water to tank internal pressure, soup
Thus molten metal in tank raises.
When judging whether to take soup to amount, it can be carried out by two kinds of embodiments：
A) according to m-p functional relation, the pressure P corresponding to aimed quality m must be calculated before soup is taken2.Walked
Only need to be to measuring the current pressure values pressure P corresponding with aimed quality of jug used for heating up water during rapid S1032Analysis contrast, when measuring jug used for heating up water
Current pressure values reach pressure P2When, then it can determine whether to take soup to amount.
B) current pressure values of jug used for heating up water will be measured, is converted into according to m-p functional relation and currently draws quality of molten metal, then
Quality of molten metal and aimed quality progress analysis contrast are drawn by current, drawing quality of molten metal reaches aimed quality when currently
When, then it can determine whether to take soup to amount.
Fig. 3 is the structural representation of jug used for heating up water of the present invention.
Jug used for heating up water of the present invention is made up of inverted round stage and cylinder, and the volume that molten metal 8 enters jug used for heating up water can be by the stereometer of jug used for heating up water
Calculate.The weight of jug used for heating up water inner metal liquid, and the internal pressure P=ρ gh of jug used for heating up water are determined according to m=ρ × V.Quality m is explained in detailed below
With the functional relation between jug used for heating up water pressure p.
As shown in Figure 3, R, r, h1, α be constant.
When molten metal height h is less than inverted round stage height h1When, because the big radius surface R of round platform changes with h change, therefore
According to inverted round stage and cylinder angle α, R=htana is obtained, the volume of molten metal is：
It should be noted that valve element volume π × r need to be deducted when calculating molten metal volume2×h。
When molten metal height h is more than back taper height h1When, the volume of molten metal is：
And according to m=ρ × V, it is possible to determine the weight of jug used for heating up water inner metal liquid.Due to the internal pressure P=ρ gh of jug used for heating up water.
Understand, take soup quality to there is following functional relation with the pressure inside jug used for heating up water, jug used for heating up water size.
Quality when target takes soup quality m to be saturated with inverted round stage less than or equal to molten metal
When, then m and p functional relation is：
(1) formula is substituted into m=ρ × V,
Again
(3) formula of substitution is obtainedH can be obtained by m=ρ × V, from
And try to achieve correspondence p value.
Quality when target takes soup quality m to be saturated with inverted round stage more than molten metal
When, then m and p functional relation is：
(2) formula is substituted into m=ρ × V,
Again
(4) formula of substitution is obtainedThat is m=a2p+c,a2, c is normal
Number.
By above-mentioned quality m and pressure P functional relation, correspondence jug used for heating up water pressure can be calculated according to aimed quality m
P2, so that when taking soup, as long as measuring jug used for heating up water current pressure for aimed quality corresponding pressure value P2When or jug used for heating up water will be measured currently press
It is current when drawing quality of molten metal and reaching aimed quality that force value is converted into, you can judgement takes soup to measuring.Needed when taking soup to amount
Stopping is vacuumized, and instantaneously passes through cylinder promotion valve element closing jug used for heating up water.
S104, which rises jug used for heating up water component and is sent to jug used for heating up water component, feeds soup point, and that opens jug used for heating up water component takes soup mouthful, again to soup
Canister assembly fills inert gas to destroy the vacuum state of jug used for heating up water component, discharges molten metal.
After the completion of soup is taken, the jug used for heating up water that will be equipped with molten metal is transported to hello soup point.When feeding soup, lifting valve element with cylinder makes soup
Tank is opened, and fills inert gas to jug used for heating up water component to destroy the vacuum on jug used for heating up water top again, and the air pressure now in jug used for heating up water is big
In atmospheric pressure, molten metal is discharged into the pressure chamber of die casting machine.After the completion of soup is fed, then carry out next circulation.
Molten metal is drawn in jug used for heating up water using vacuum by the method for the invention, hello soup point is reached and discharges again, meanwhile,
Filled in slurry tank by inert gas, contact of the molten metal with outside air can be reduced, molten metal is difficult to be oxidized, reduce oxide
Generation, impurity is few, and purity is high.
Carry out taking soup using prior art, when taking soup amount larger, the liquid level of measuring container inner metal liquid is higher, and weight is passed
Sensor is bigger by heat radiation, but the use environment temperature of general weight sensor is -35 DEG C~70 DEG C, easily more than using warm
Spend scope so that weight sensor error in dipping increases.And the method for the invention need to only rest on when taking soup and take soup position, then
Atmospheric pressure is less than by soup pressure inside the tank so that molten metal is ascended into jug used for heating up water.Pressure sensor is without the liquid close to smelting furnace
Face, error is small, high precision.In addition, the closed situation in inside of jug used for heating up water can be monitored in real time using pressure sensor, judge that jug used for heating up water takes soup
During whether gas leakage, reliability is stronger.
Correspondingly, shown in Fig. 4, the present invention also provides a kind of device 1 of the quantitative molten metal of vacuum pumping, including：
Mobile unit 2, for taking soup device to be moved to above metal smelter vacuum quantitative, the vacuum quantitative takes soup to fill
Put including jug used for heating up water component, that opens jug used for heating up water component takes soup mouthful；
Test unit 3 is inflated, for vacuum quantitative to be taken into the test of soup device and inert gas is filled to jug used for heating up water component；
Soup position identifying unit 4 is taken, vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, when jug used for heating up water component gas pressure
Power reaches pressure P set in advance1When, then judge to reach noodle soup positions, and calculated according to noodle soup position and take soup position, work as vacuum
Quantitative soup device, which is reached, takes soup position then to stop test, stops filling inert gas to jug used for heating up water component；
Soup unit 5 is taken, the molten metal in jug used for heating up water component is highly increased for continuing to vacuumize to jug used for heating up water component, when reaching
The corresponding pressure P of aimed quality2When, then judge to take soup to amount, now stop vacuumizing and instantaneously closing jug used for heating up water component；
Soup unit 6 is fed, soup point is fed for rising jug used for heating up water component and being sent to jug used for heating up water component, that opens jug used for heating up water component takes soup
Mouthful, fill inert gas to destroy the vacuum state of jug used for heating up water component to jug used for heating up water component again, discharge molten metal；
The mobile unit 2, inflation test unit 3, soup position identifying unit 4 is taken, soup unit 5 is taken, feeds the phase successively of soup unit 6
Connection.
Device of the present invention make it that vacuum quantitative takes soup device to be moved to the upper of molten metal smelting furnace by mobile unit 2
Side, and open jug used for heating up water component take soup mouthful；Then vacuum test device makes vacuum quantitative take soup device test, in vacuum quantitative
Soup device is taken to fill inert gas to jug used for heating up water component before not immersing molten metal；Soup device is taken to immerse to metal in vacuum quantitative
Malleation is formed in liquid, jug used for heating up water, takes soup position identifying unit 4 to obtain jug used for heating up water component current pressure values, when jug used for heating up water component gas pressure reaches
To pressure P set in advance1When, then judge to reach noodle soup positions, and calculated according to noodle soup position and take soup position, work as vacuum quantitative
Taking soup device to reach takes soup position then to stop test, stops filling inert gas to jug used for heating up water component.Soup unit 5 is taken to take out jug used for heating up water component
Molten metal in vacuum, jug used for heating up water also continues to rise, when the jug used for heating up water pressure value measured reaches the corresponding pressure P of aimed quality2When, then
Judgement takes soup to amount, now stops vacuumizing and instantaneously closing jug used for heating up water component.It is last to be risen jug used for heating up water component by hello soup unit 6 and incited somebody to action
Jug used for heating up water component, which is sent to, feeds soup point, and that opens jug used for heating up water component takes soup mouthful, fills inert gas to destroy jug used for heating up water to jug used for heating up water component again
The vacuum state of component, discharges molten metal.
The mobile unit 2 sets the initial position that a vacuum quantitative takes soup device according to the position of smelting furnace, works as vacuum
When quantitative soup device is located at initial position, vacuum quantitative takes soup device above smelting furnace.Wherein, vacuum quantitative takes soup device bag
Include for containing molten metal jug used for heating up water component, as shown in Fig. 2 vacuum quantitative take the jug used for heating up water component of soup device include cylinder, valve element and
Jug used for heating up water, cylinder is above jug used for heating up water, and valve element is in jug used for heating up water, and cylinder is connected with valve element, and valve element can be realized with the push-and-pull of cylinder
Closing or opening jug used for heating up water take soup mouthful.
Take soup device to be moved to above metal smelter in vacuum quantitative, be now set as that vacuum quantitative takes the initial of soup device
Position.And in order that molten metal enters in jug used for heating up water, it is necessary to cylinder lifts valve element, make valve element and take soup mouthful to release to be socketed, take soup mouthful
Open wide, molten metal can free in and out jug used for heating up water, so as to realize that opens jug used for heating up water takes soup mouthful.Soup device is taken to be located in vacuum quantitative initial
Behind position, that opens jug used for heating up water component takes soup mouthful.
Preferably, the mobile unit 2 can realize the movement that soup device is taken to vacuum quantitative using XY axis robots.
Fig. 5 is the structural representation of the inflation test unit 3 of device of the present invention.
The inflation test unit 3 includes：
Test unit 31, for vacuum quantitative to be taken into soup device test；
Inflation unit 32, for filling inert gas to jug used for heating up water component.
Test unit 31 can control speed and the position that vacuum quantitative takes soup device test, and inflation unit 32 is fixed in vacuum
Measure and fill inert gas to jug used for heating up water component during soup device test.
Fig. 6 is another structural representation of the inflation test unit 3 of device of the present invention.
The inflation test unit 3 includes：
First test unit 311, for vacuum quantitative to be taken into soup device with A speed high speed tests；
Second test unit 312, for when vacuum quantitative soup device arrival rate toggle bit, vacuum quantitative to be taken into soup
Device is changed to B speed low speed tests；
Inflation unit 32, for filling inert gas to jug used for heating up water component.
It should be noted that the first test unit 311 control vacuum quantitative takes soup device to drop to speed from initial position
Toggle bit, and high speed test.Second test unit 312 can detect provided with a position judgment unit, the position judgment unit
Vacuum quantitative takes soup device present position, by carrying out com-parison and analysis with speed toggle bit set in advance, so as to judge
Go out vacuum quantitative take soup device whether arrival rate toggle bit., will be true when vacuum quantitative soup device arrival rate toggle bit
Empty quantitative soup device switches to low speed test, meanwhile, inflation unit 32 is filled to jug used for heating up water component to be full of in inert gas, jug used for heating up water
Inert gas, can avoid molten metal from being oxidized when entering jug used for heating up water.
Device of the present invention by a high speed and the notch speed degree of low speed two cooperation, not only test early stage save the time,
Efficiency is improved, and low speed test is used when close to metal bath surface, is conducive to jug used for heating up water component accurately to reach and takes soup position.
Fig. 7 for it is of the present invention take soup position identifying unit 4 structural representation.
Soup position identifying unit 4 is taken, including：
Second pressure value acquiring unit 41 for obtaining jug used for heating up water component current pressure values；
For by current pressure values and pressure P set in advance1Analysis contrast is done, is preset when current pressure values are equal to
Pressure P1When, judge to reach the 3rd identifying unit 42 of noodle soup position；
The scaling unit 43 of soup position is taken for being calculated according to noodle soup position.
During taking soup-hello soup in circulation, if the aimed quality to be drawn is larger, smelting furnace inner metal liquid
Liquid level position have fluctuation, therefore, when jug used for heating up water continue decline and start immersion molten metal when, jug used for heating up water decline depth may
It is different.And the soup position identifying unit 4 that takes of the present invention is measured by the acquisition pressure sensor of second pressure value acquiring unit 41
Current pressure values in jug used for heating up water, the 3rd identifying unit 42 is by current pressure values and setup pressure value P1It is compared, is set if reaching
Level pressure force value P1When, then judge that jug used for heating up water reaches noodle soup position, now calculating jug used for heating up water arrival by scaling unit 43 takes soup position
Decision condition, the decision condition include following three kinds：
(1) time judges
The speed that vacuum quantitative takes soup device to decline is controllable, can be at the uniform velocity or test in the case of speed change, and setting vacuum is determined
The a certain depth of soup device immersion molten metal is measured to take soup position, then it is a definite value that noodle soup position, which is arrived and takes the distance of soup position, logical
The measuring and calculating test time is spent, judges whether that arrival takes soup position according to test speed.
(2) displacement judges
Vacuum quantitative can be read in real time by the encoder being installed on test unit 31 and take soup device apart from initial position
Displacement, when vacuum quantitative soup device reaches noodle soup position, encoder record displacement data at that time, vacuum quantitative takes soup to fill
Continuation test is put, can if the displacement data currently obtained subtracts the displacement data obtained during noodle soup position equal to preset value
Determine to reach and take soup position.
(3) pressure judges
Setup pressure value P when taking soup position beforehand through calculating arrival3, when vacuum quantitative soup device continuous decrease, pressure
Sensor measures current pressure values for setup pressure value P3When, then it can determine whether that arrival takes soup position.Or pass through above two judgement side
Method makes vacuum quantitative take the arrival of soup device to take soup position, and record takes soup position pressure value at that time, hereafter directly can entered by the pressure value
Row judges whether that arrival takes soup position.
By above-mentioned three kinds of methods judge vacuum quantitative take soup device reach take Tang Weihou, take soup position identifying unit 4 to
Mobile unit 2 sends signal, and control vacuum quantitative takes soup device to stop test, so that it is determined that the final stop place of jug used for heating up water.
With take soup position identifying unit 4 be connected take soup unit 5 jug used for heating up water stopping test when, take soup unit 5 to proceed by and take
Soup.
Because jug used for heating up water used by the present invention is made up of inverted round stage and cylinder, the volume that molten metal enters jug used for heating up water can pass through jug used for heating up water
Volume is calculated, and the weight of jug used for heating up water inner metal liquid, and the internal pressure P=ρ gh of jug used for heating up water are determined further according to m=ρ × V, can be derived
Quality m and pressure P functional relation, specific m-p functional relation is listed in detail above, and here is omitted.This
Invention can carry out judging whether to take soup to amount according to quality m and pressure P functional relation using two methods：
A) according to m-p functional relation, the pressure P corresponding to aimed quality m must be calculated before soup is taken2.Walked
Only need to be to measuring the current pressure values pressure P corresponding with aimed quality of jug used for heating up water during rapid S1032Analysis contrast, when measuring jug used for heating up water
Current pressure values reach pressure P2When, then it can determine whether to take soup to amount.
B) current pressure values of jug used for heating up water will be measured, is converted into according to m-p functional relation and currently draws quality of molten metal, then
Quality of molten metal and aimed quality progress analysis contrast are drawn by current, drawing quality of molten metal reaches aimed quality when currently
When, then it can determine whether to take soup to amount.
It is of the present invention to take the corresponding embodiment of soup unit 5 by above-mentioned determination methods, it is as follows.
Such as the first embodiment structural representation for taking soup unit 5 that Fig. 8 is device of the present invention.
It is described take soup unit 5 first embodiment be, it is described to take the soup unit 5 to include：
First pressure value acquiring unit 51 for obtaining jug used for heating up water component current pressure values；
For by current pressure values pressure P corresponding with aimed quality2Analysis contrast is done, current pressure values are equal to target matter
Measure corresponding pressure P2When, then judge the first identifying unit 52 for taking soup to amount.
The first pressure value acquiring unit 51 can obtain jug used for heating up water component current pressure values, when the negative pressure in jug used for heating up water component is got over
Greatly, the liquid level of molten metal also rises therewith.And use to take for first embodiment be calculated during soup unit 5 aimed quality m institutes right
The pressure P answered2, pressure value acquiring unit obtains jug used for heating up water component current pressure values in real time, identifying unit analysis contrast current pressure
Value pressure P corresponding with aimed quality2, when current pressure values are equal to the corresponding pressure P of aimed quality2When, then judge to take soup to arrive
Amount, now instantaneously close jug used for heating up water component takes soup mouthful, and completion takes soup.
Fig. 9 is the second embodiment structural representation of the present invention for taking soup unit 5.
It is described take soup unit 5 second embodiment be, it is described to take the soup unit 5 to include：
First pressure value acquiring unit 51 for obtaining jug used for heating up water component current pressure values；
For current pressure values to be converted into the current pressure quality conversion unit 53 for drawing quality of molten metal；
Analysis contrast is done for will currently draw quality of molten metal and aimed quality, is equal to when currently drawing quality of molten metal
During aimed quality, then the second identifying unit 54 for taking soup to amount is judged.
In the second embodiment for taking soup unit 5, the first pressure value acquiring unit 51 will obtain jug used for heating up water component and work as
Preceding pressure value is sent to pressure quality conversion unit 53, is converted to current pressure values according to m-p functional relation and currently draws
Quality of molten metal, identifying unit analysis contrast currently draws quality of molten metal and aimed quality, and quality of molten metal is drawn when currently
When reaching aimed quality, then judge to take soup to amount, that now instantaneously closes jug used for heating up water component takes soup mouthful, and completion takes soup.
Preferably, first pressure value acquiring unit described in the first embodiment and second embodiment of soup unit 5 51 is taken to be
Pressure sensor, the pressure sensor is located on jug used for heating up water component to detect gas pressure in jug used for heating up water.
After taking soup unit 5 to complete to take soup, feed soup unit 6 and rise jug used for heating up water component and jug used for heating up water component is sent to hello soup point, beat
That opens jug used for heating up water component takes soup mouthful, the air on jug used for heating up water top is connected with outside atmosphere, now the air pressure and air in jug used for heating up water
Pressure is identical, so as to destroy the vacuum state of jug used for heating up water component, under gravity, molten metal is discharged into the pressure of die casting machine to molten metal
It is indoor.After the completion of soup is fed, then carry out next circulation.
Learnt from the method for the invention, device of the present invention has high precision, takes metal liquid oxidation few, degree of purity
High advantage.In addition, the existing ultimate load for taking soup device easily to exceed weight sensor in maintenance, causes weight to sense
Device is damaged, it is necessary to which departing from jug used for heating up water component with weight sensor could be repaired, or design antioverloading structure.And it is of the invention
Described device need not remove part, easy to maintenance, and rigidly eager to do well in everything degree is high for device.
It is last to should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Understand, technical scheme can be modified or equivalent, without departing from the essence of technical solution of the present invention
And scope.
Claims (9)
1. the method for the quantitative molten metal of a kind of vacuum pumping, it is characterised in that comprise the following steps：
(1) soup device is taken to be moved to above metal smelter vacuum quantitative, the vacuum quantitative takes the soup device to include jug used for heating up water component,
That opens jug used for heating up water component takes soup mouthful；
(2) vacuum quantitative is taken the test of soup device and fill inert gas to jug used for heating up water component；
(3) vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, when jug used for heating up water component gas pressure reach it is set in advance
Pressure P1When, then judge to reach noodle soup positions, and calculated according to noodle soup position and take soup position, when vacuum quantitative soup device is reached
Take soup position then to stop test, stop filling inert gas to jug used for heating up water component；
(4) jug used for heating up water component is vacuumized makes the molten metal in jug used for heating up water component highly rise, when reaching the corresponding pressure P of aimed quality2
When, then judge to take soup to amount, now stop vacuumizing and instantaneously closing jug used for heating up water component；
(5) rise jug used for heating up water component and be sent to jug used for heating up water component and feed soup point, that opens jug used for heating up water component takes soup mouthful, again to jug used for heating up water component
Filling inert gas discharges molten metal to destroy the vacuum state of jug used for heating up water component.
2. the method for the quantitative molten metal of vacuum pumping as claimed in claim 1, it is characterised in that the step (4) includes：Take out true
Sky makes the molten metal in jug used for heating up water component highly rise, and determines to draw the quality of molten metal by pressure, as pressure P2Correspondence mesh
When marking quality, then judge to take soup to amount, now stop vacuumizing and instantaneously closing jug used for heating up water component.
3. the method for the quantitative molten metal of vacuum pumping as claimed in claim 1, it is characterised in that the step (3) includes：
Vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, the built-in pressure of attentioning of jug used for heating up water component, and obtains jug used for heating up water component
Current pressure values；
Current pressure values and pressure P set in advance1Analysis contrast is done, when current pressure values are equal to pressure P set in advance1When,
Judge that vacuum quantitative takes soup device to reach noodle soup position；
Calculated according to noodle soup position and take soup position, taken soup position then to stop test when vacuum quantitative soup device is reached, stop to soup
Canister assembly fills inert gas.
4. a kind of device of method for the quantitative molten metal of vacuum pumping as claimed in claim 1, it is characterised in that including：
Mobile unit, for taking soup device to be moved to above metal smelter vacuum quantitative, the vacuum quantitative takes soup device bag
Jug used for heating up water component is included, that opens jug used for heating up water component takes soup mouthful；
Test unit is inflated, for vacuum quantitative to be taken into the test of soup device and inert gas is filled to jug used for heating up water component；
Soup position identifying unit is taken, vacuum quantitative takes soup device to continue to explore downward to immersion molten metal, when jug used for heating up water component gas pressure reaches
To pressure P set in advance1When, then judge to reach noodle soup positions, and calculated according to noodle soup position and take soup position, work as vacuum quantitative
Taking soup device to reach takes soup position then to stop test, stops filling inert gas to jug used for heating up water component；
Soup unit is taken, the molten metal in jug used for heating up water component is highly increased for being vacuumized to jug used for heating up water component, when reaching aimed quality
Corresponding pressure P2When, then judge to take soup to amount, now stop vacuumizing and instantaneously closing jug used for heating up water component；
Soup unit is fed, soup point is fed for rising jug used for heating up water component and being sent to jug used for heating up water component, that opens jug used for heating up water component takes soup mouthful, again
Fill inert gas to destroy the vacuum state of jug used for heating up water component to jug used for heating up water component, discharge molten metal；
The mobile unit, inflation test unit, soup position identifying unit is taken, soup unit is taken, feeds soup unit and be sequentially connected and connect.
5. device as claimed in claim 4, it is characterised in that described to take the soup unit to include：
First pressure value acquiring unit for obtaining jug used for heating up water component current pressure values；
For by current pressure values pressure P corresponding with aimed quality2Analysis contrast is done, when current pressure values are equal to aimed quality
Corresponding pressure P2When, then judge the first identifying unit for taking soup to amount.
6. device as claimed in claim 4, it is characterised in that described to take the soup unit to include：
First pressure value acquiring unit for obtaining jug used for heating up water component current pressure values；
For current pressure values to be converted into the current pressure quality conversion unit for drawing quality of molten metal；
Analysis contrast is done for will currently draw quality of molten metal and aimed quality, is equal to target when currently drawing quality of molten metal
During quality, then the second identifying unit for taking soup to amount is judged.
7. such as the described device of claim 5 or 6, it is characterised in that the pressure value acquiring unit is pressure sensor, the pressure
Force snesor is located on jug used for heating up water component to detect gas pressure in jug used for heating up water.
8. device as claimed in claim 4, it is characterised in that the inflation test unit includes：
Test unit, for vacuum quantitative to be taken into soup device test；
Inflation unit, for filling inert gas to jug used for heating up water component.
9. device as claimed in claim 4, it is characterised in that described to take the soup position identifying unit to include：
Second pressure value acquiring unit for obtaining jug used for heating up water component current pressure values；
For by current pressure values and pressure P set in advance1Analysis contrast is done, when current pressure values are equal to pressure set in advance
Power P1When, judge to reach the 3rd identifying unit of noodle soup position；
The scaling unit of soup position is taken for being calculated according to noodle soup position.
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| CN106670441B (en) * | 2016-12-30 | 2017-11-14 | 北京航空航天大学 | A kind of apparatus and method for of achievable metal bath vacuum quantitative cast |
| CN107931591A (en) * | 2017-11-07 | 2018-04-20 | 上海素朴智能设备制造有限公司 | Liquid quantitative fetching device, control method, process and readable storage medium storing program for executing |
| CN108160975B (en) * | 2018-01-30 | 2021-04-16 | 深圳市华成工业控制股份有限公司 | Method for pouring different amounts of soup for different stations by soup feeder |
| DE102020205545A1 (en) | 2020-04-30 | 2021-11-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Method for manufacturing a material cartridge, container for use in a corresponding method, material cartridge and method for manufacturing a cast product using the material cartridge, and a corresponding cast product |
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| JP3622431B2 (en) * | 1997-08-01 | 2005-02-23 | 宇部興産株式会社 | Hot water supply ladle and hot water supply method |
| CN100463744C (en) * | 2006-05-09 | 2009-02-25 | 赣南师范学院 | Casting machine with vacuum siphon tapped magnesium alloy |
| CN201308981Y (en) * | 2008-11-27 | 2009-09-16 | 比亚迪股份有限公司 | Amorphous alloy die-casting feeding device and amorphous alloy die-casting machine |
| EP2407260A1 (en) * | 2010-07-14 | 2012-01-18 | MELTEC Industrieofenbau GmbH | Device and method for melt metering and casting machine |
| CN103639387B (en) * | 2013-12-20 | 2016-02-24 | 东莞宜安科技股份有限公司 | A kind of metal vacuum melting die-cast formation equipment |
| CN104493134A (en) * | 2014-12-23 | 2015-04-08 | 广东科达洁能股份有限公司 | Closed slurry taking mechanism and closed slurry taking method |
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Effective date of registration: 20200918 Address after: 061000, Hebei, Xianxian County, Cangzhou, 307 north and South Hill Village East (Xianxian County Chen lap Industrial Zone) Patentee after: CANGZHOU KENUO MACHINERY MANUFACTURING Co.,Ltd. Address before: 528313, No. 1, West Road, Guang Long Industrial Park, Chencun Town, Shunde District, Guangdong, Foshan Patentee before: KEDA CLEAN ENERGY Co.,Ltd. |