CN1042105C - Melt Filling Control Method for Casting Machine - Google Patents
Melt Filling Control Method for Casting Machine Download PDFInfo
- Publication number
- CN1042105C CN1042105C CN96102513A CN96102513A CN1042105C CN 1042105 C CN1042105 C CN 1042105C CN 96102513 A CN96102513 A CN 96102513A CN 96102513 A CN96102513 A CN 96102513A CN 1042105 C CN1042105 C CN 1042105C
- Authority
- CN
- China
- Prior art keywords
- die cavity
- aforementioned
- holding furnace
- pressure
- liquation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005266 casting Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 52
- 239000000155 melt Substances 0.000 claims description 9
- 230000009194 climbing Effects 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 abstract description 32
- 239000002184 metal Substances 0.000 abstract description 32
- 238000001514 detection method Methods 0.000 description 27
- 230000000630 rising effect Effects 0.000 description 10
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000000740 bleeding effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
In a method for controlling the fill-up of molten metal in a casting machine, in which the differential pressure is generated between an inner space of a holding furnace and the cavity formed in a mold and the molten metal in the holding furnace is supplied into the cavity by utilizing this differential pressure, the method comprises set program pattern, control differential pressure, detecte the molten metal surface level, compensate the program pattern, control differential pressure etc.
Description
The present invention relates to a kind of control method to casting machine added metal liquation.Allow produce pressure reduction between the die cavity of formation in inner space and the mold of the holding furnace of storing liquation, utilize this pressure reduction, the liquation in the aforementioned holding furnace is infeeded in the aforesaid die cavity, the melt filling of so a kind of casting machine is controlled by the liquation path.
Relevant therewith prior art is recorded in the spy and opens clear 59-10461 communique, and its sketch map as shown in Figure 4.
This air injection machine 1 comprise the holding furnace 6 of storing liquation and by die holder 2 be fixed in holding furnace 6 directly over the metal pattern 3 of position, the cast tubes 5 that is connecting tubular on the gate part 4h of aforementioned metal mould 3, this cast tubes 5 have been communicated with the inside of die cavity 4 with the holding furnace 6 of metal pattern 3.Here, aforementioned die cavity 4 communicates with outside atmosphere by the exhaust channel (not shown), and aforementioned holding furnace 6 is airtight, its inside is provided with the forced air of being supplied with by pressue device 7.
The model that aforementioned pressue device 7 can make the pressure in the aforementioned holding furnace 6 defer to regulation changes (increase), changes that according to this pressure the liquation in the holding furnace 6 is infeeded in the die cavity 4 by cast tubes 5.Herein, the pressure that is infeeded in the liquation liquid level of die cavity and holding furnace 6 inner melt liquid level differences and the holding furnace 6 by aforementioned cast tubes 5 is proportional.Therefore, can control the liquation liquid level height that infeeds in the die cavity 4 by the pressure in the control holding furnace 6.In addition, because the rule that makes pressure in the holding furnace 6 defer to model rises, the rate of climb of liquation, promptly infeeding the amount of liquation in the die cavity 4 can be controlled.
On this air injection machine 1, the setting pressure model is divided into three phases: liquation rises to the stage, liquation of the entry position of die cavity 4 to packing stages, feeding pressure period in the die cavity 4 by cast tubes 5.
That is, be supplied to the 4 inlet stages of die cavity at liquation, the magnetic valve 8a of pressue device 7,8b opens, and by pipe arrangement 9a, 9b is toward the holding furnace 6 interior forced airs that feed volume.Thereby the pressure in the holding furnace 6 rises rapidly, and liquation rises in cast tubes 5 fast and reaches the porch of die cavity 4.And when aforementioned holding furnace 6 internal pressures one reach first authorized pressure, thinking that then liquid level has arrived the porch of die cavity 4, magnetic valve 8b promptly closes.Thus, only feed forced air by pipe arrangement 9b in holding furnace 6, the forced air flow reduces, and the pressure in the holding furnace 6 rises slack-off.Its result is that liquation is slowly in the filling progressive die chamber 4.And the pressure one in the aforementioned holding furnace reaches the 2nd authorized pressure value, then thinks to be full of liquation in the die cavity 4, and magnetic valve 8c opens.According to this, by pipe arrangement 9b, 9c feeds forced air in holding furnace 6, and pressure rises rapidly again, the liquation in the die cavity 4 is carried out the feeding pressurization.
As mentioned above, existing air injection machine 1, the pressure in holding furnace 6 reaches the state of the 1st authorized pressure value, thinks that then liquid level reaches the inlet of die cavity 4, and the model that pressure rises promptly becomes the model of slow rising.And pressure reach the 2nd authorized pressure value state, think that liquation has been full of die cavity 4, same, pressure rising model changes to the fast rise model again.But, as because the generation of back pressures in the fluctuation of the liquation liquid levels of storing in the holding furnace 6 or the die cavity 4, usually occur that pressure in the holding furnace 6 reach the 1st or the 2nd authorized pressure value and actual liquid level does not rise to the situation of preposition; On the contrary, actual liquid level situation about rising to above the precalculated position also often has it.
In this occasion, continue operation even defer to the pressure rising model of initial setting, reach moment of porch of die cavity 4 or actual liquation at actual liquid level and be full of moment die cavity 4 in, model that also can not the rising of change pressure.Therefore,, produce air and involve in, but slowly pass through should be the time on the contrary, then cause the reduction of liquid temperature fast by cast tubes 5 such as in the time should slowly infeeding in the die cavity 4, but supplying with fast liquation; Also have liquation to be full of the back because the feeding insufficient pressure often produces pore in the cast member.
The present invention proposes in view of above problems of the prior art, and its purpose is to provide a kind of can infeed die cavity with liquation with suitable speed, and can carry out the casting machine melt filling control method of the feeding pressurization after liquation is filled well.
The present invention is the interior liquid level of practical measurement die cavity, can the pressure rising model in the predefined holding furnace be compensated based on this measured value, promptly can to pressurization in the holding furnace liquation be infeeded in the die cavity with suitable speed according to this, also can after liquation is filled, carry out the feeding pressurization well simultaneously with optimal pressure rising model.
Above-mentioned problem is to solve with the casting machine melt filling control method with following feature.
Promptly, the melt filling control method of casting machine of the present invention first is: make between the die cavity of formation in the holding furnace inner space of storing liquation and the mold and produce pressure reduction, utilize this pressure reduction to make the liquation in the aforementioned holding furnace infeed aforementioned die cavity, in control method, comprise the melt filling of such casting machine by the liquation path:
Setting program model operation, this procedural model have been determined the time behavior of pressure reduction desired value,
Defer to the aforementioned procedural model of setting, the inner space of the aforementioned holding furnace of control and the operation of the pressure reduction between die cavity,
Detect the operation whether liquid level rises to predefined level height in the aforementioned die cavity,
When liquid rises to predefined level height in the die cavity, the operation that immediately aforementioned procedural model compensated,
The operation of following the procedural model that compensated, pressure reduction between aforementioned holding furnace inner space and the die cavity being controlled.
Generally, from come out level height poor of in the liquation path infeeds the liquation liquid level of die cavity and holding furnace liquid level of holding furnace, and the pressure reduction between holding furnace and the die cavity is proportional.Therefore, by the aforementioned pressure reduction of control, can control the level height of the liquation liquid level that infeeds to die cavity.Thereby, as follow the regulation model and increase aforesaid pressure reduction, can control the rate of climb that infeeds liquation to die cavity, just can control the quantity delivered and the feeding pressure that infeed the die cavity liquation.
The present invention in the casting initial stage, is to rely on by the procedural model increase holding furnace of initial setting and the pressure reduction between the die cavity to control the quantity delivered that infeeds liquation to die cavity.
; if only increase pressure reduction based on the procedural model of initial setting, because of influences such as external disturbance, actual liquid level highly deviated predetermined liquid level height; can not infeed with suitable speed in the die cavity at this occasion liquation, can not finely carry out the feeding pressurization simultaneously.For this reason, be provided with among the present invention and detect the operation whether liquid level rises to level height predetermined in the die cavity, when actual liquid level rises to predetermined level height, can compensate the procedural model of initial setting.Promptly, under the situation that the external interference factor influence is arranged, actual liquid level height has the occasion that departs to the predetermined level height, owing to compensate, in fact become the procedural model that the set basis actual conditions have been allocated based on the procedural model of actual liquid level height to initial setting.Control and continue later on to carry out pressure reduction with this procedural model that has compensated.Therefore, when infeeding die cavity in suitable speed liquation, the feeding pressurization also can finely be carried out.
And, as many more, according to this procedural model is compensated actual liquid level height detection number of times, then can set more suitably procedural model.
As according to the present invention, owing in the process that in die cavity, infeeds liquation, procedural model is compensated, can control pressure reduction between holding furnace and the die cavity with suitable procedural model based on actual liquid level height.Therefore, can infeed liquation in the die cavity with suitable speed, thereby just cause easily not quite that air involves in the liquation and because the pore that the feeding insufficient pressure causes.
The drawing simple declaration
The whole skiagraph of air injection machine of Fig. 1-use for the melt filling control method of implementing one embodiment of the invention,
The curve map of the pressurization procedural model in the melt filling control method of Fig. 2-relevant one embodiment of the invention of expression;
The curve map of the pressurization procedural model in the melt filling control method of Fig. 3-relevant one embodiment of the invention of expression;
Fig. 4-for implementing the whole skiagraph of air injection machine that existing melt filling control method uses.
Embodiment
Describe with regard to the solution filling control method of the casting machine of one embodiment of the invention with Fig. 1-3 below.Here, Fig. 1 is the whole skiagraph for the employed air injection machine 10 of solution filling control method of implementing relevant present embodiment.Fig. 2, Fig. 3 are the curve maps of pressurization procedural model in the expression holding furnace.
Aforesaid air injection machine 10 includes the holding furnace 16 of the storage plain molten metal of aluminium (hereinafter to be referred as liquation) and is fixed in the metal pattern of just going up 13 of holding furnace 16 by die holder 12, and is connecting the cast tubes 15 of tubular on the gate part 14h of metal pattern 13.Cast tubes 15 is supported by die holder 12 by opening 12K, the sagging shape of one-tenth of central authorities' formation of aforementioned die holder 12, and its top is immersed in the liquation of aforementioned holding furnace 16 storages.
Aforementioned holding furnace 16 is made of the crucible 16r and the housing section 16c that store liquation, and crucible 16r relies on the heater (not shown) to make it in keeping warm mode is packed housing 16c into, and the upper opening of crucible 16r is by aforementioned die holder 12 sealings.In addition, (be the left part among the figure) in the end of aforementioned die holder 12, in aforementioned crucible 12 in, tilt to be provided with the fluid distributing hole 18 of casting molten metal, the pressure sensor 18p of the pressure in detection holding furnace 16 has been installed in the position of this fluid distributing hole 18.The pressure signal that is detected by pressure sensor 18p is imported the control device 20 that is made of computer then.And after casting liquation in crucible 16r, aforementioned fluid distributing hole is sealed by covering 18h, and aforementioned pressure sensor 18p can accurately measure the force value in the holding furnace 16.
Moreover, on aforementioned fluid distributing hole 18, connected forcing pipe 19 for the usefulness of pressurizeing in to holding furnace 16.And forcing pipe 19 is to introduce pipe in the holding furnace by the forced air that not shown air compressor comes, and pressure-reducing valve 19r and flow control valve 19c are installed successively from the upstream in the pipeline.Here, will narrate as the back, and be the pressure in the control holding furnace 16, aforementioned flow control valve 19c is by the operation signal remote-controlled operation from aforementioned control device 20.In addition, in the downstream of aforementioned flow control valve 19c the air bleeding valve 19b that uses for the air of discharging in the holding furnace 16 has been installed, and air bleeding valve 19b closes usually.
Aforementioned metal mould 13 is made of patrix 13u and counterdie 13d, at the matched moulds state, communicates with atmosphere by the exhaust channel (not shown) in the die cavity 14.In addition, among the patrix 13u of aforementioned metal mould 13, uppermost position at die cavity 14 is installed with top level detection sensor 14a, and in counterdie 13d, in the entry position of die cavity 14 (the upper surface Kb height of gate part 14h) bottom level detection sensor 14b is installed.And import aforementioned control device 20 by the level detection signal that top level detection sensor 14a and bottom level detection sensor 14b come.
Aforementioned control device 20 has write down to making holding furnace 16 interior pressure change the base program model P of the time behavior of determining the pressure target value in time
0(with reference to the solid line part among Fig. 2, Fig. 3).And this base program model P
0Can go up unshowned input unit by figure revises.The valve opening of control flow control valve 19c is compeled from base program model P the pressure in the holding furnace 16
0
Here, at aforementioned base program model P
0On, some S is the time that begins to pressurize in the holding furnace 16, some a
0Be inlet (lower surface) K that holding furnace 16 interior pressure reach the gate part 14h that can make metal bath surface rise to metal pattern 13
aThe pressure A of (with reference to Fig. 1)
0Time, and the some b
0Be outlet (upper surface) K that the holding furnace internal pressure reaches the gate part 14h that can make metal bath surface rise to metal pattern 13
bPressure B
0Time.Point C
0Be the pressure C that the holding furnace internal pressure reaches the uppermost position that can make metal bath surface rise to die cavity 14
0Time.Point d
0Be to reach to molten metal pressurization pressure d at the end
0Time, and the some e
0It is the time that pressure begins to descend before the die sinking.
At this base program model P
0On, from a S to an a
0Because pressure rising gradient is big, the lower surface K of the very fast arrival gate part of metal bath surface 14h
aTherefore, the molten metal decrease of temperature situation that causes of cast tubes 15 makes moderate progress.And by an a
0To a b
0The gradient that pressure rises diminishes to some extent, at the lower surface K by gate part 14h
aUpper surface K to gate part 14h
bBetween, the speed that metal bath surface rises is more slack-off.Get off again, because from a b
0To a c
0, the gradient variable that pressure rises gets more slow, at the upper surface K by gate part 14h
bTo between the topmost of die cavity 14, the speed that metal bath surface rises is further slack-off.Therefore can prevent that air is involved in molten metal.From a c
0To a d
0Between the gradient that rises of the pressure set bigger, pressure rises very fast, carries out relatively rapidly for making the feeding pressurization of filling with molten metal in the die cavity, can reduce the generation of pore like this.
The first compensation program model P that represents with chain-dotted line among Fig. 2
1Be such: at actual liquid level than the predetermined upper surface K that rises to gate part 14h sooner
bThe occasion that detected by bottom level detection sensor 14b of the situation of height, by P
1Replace aforementioned base program model P
0Pressure in the holding furnace 16 is controlled.That is, press base program model P
0, liquid level rises to aforesaid upper surface K
bTime of height should be b
0, still, than its more Zao time (at an a
0To b
0Between carry out pressure when control) bottom level detection sensor judges that actual liquid level rises to the upper surface K of gate part 14h
bHeight the time, promptly by base program model P
0Be transformed into the first compensation program model P
1, later on promptly by the first compensation program model P
1Control the pressure in the holding furnace 16.Here, the first compensation program model P
1Some b
1Be to detect the upper surface K that actual liquid level rises to gate part 14h by bottom level detection sensor 14b
bTime of height.And by a b
1To a c
1Between gradient and aforementioned base program model P
0Some b
0To c
0Between gradient equate, also set the first compensation program model P simultaneously
1Some c
1To d
1Between gradient and aforementioned base program model P
0Some c
0To a d
0Between gradient equate.That is, if make a b
1With a b
0Overlap procedural model P
0Promptly and P
1Coincide.
In addition, the second represented compensation program model P of dotted line among Fig. 2
2Be at the height of the actual liquid level topmost that rise to die cavity 14 more Zao and, replace the first compensation program model P by the occasion that top level detection sensor 14a detects than the scheduled time
1The procedural model that pressure in the holding furnace 16 are controlled.That is, by the first compensation program model P
1, time of height that liquid level rises to the topmost of die cavity 14 should be c
1Point, but than its more Zao time (from a b
1To a c
1Between when implementing pressure control) determine actual liquid level when rising to the height of topmost of die cavity 14 by top level detection sensor, promptly become the second compensation program model, the pressure in the holding furnace 16 is controlled with the second compensation program model by the first compensation program model transferring.Here, the second compensation program model P
2Some c
2, be to detect the time that actual liquid level rises to the topmost height of die cavity 14 by top level detection sensor 14a.And set point c
2To d
2Between the gradient and the first degree of compensation model P
1Some c
1To a d
1Between gradient equate.As make a c
2, c
1, c
0All overlap model P
0, P
1, P
2Also all overlap.
The 3rd compensation program model P that chain-dotted line among Fig. 3 is represented
3Be to detect actual liquid level rises to gate part 14h than the scheduled time later (slowly) upper surface K by bottom level detection sensor 14b
bThe occasion of height under, replace aforementioned base program model P
0The procedural model that pressure in the holding furnace 16 are controlled.That is, as previously mentioned, press base program model P
0, liquid level rises to the upper surface K of gate part 14h
bTime should be b
0, actual liquid level rises slowly, by a b
0To a c
0Between carry out pressure when control, judge that by bottom level detection sensor 14b actual liquid level rises to the upper surface K of gate part 14h
bThe time, by base program model P
0Be transformed to the 3rd compensation program model P
3, and by the 3rd compensation program model P
3Control the pressure in the holding furnace 16.Here, the 3rd compensation program model P
3Some b
3Be to detect the upper surface K that liquid level rises to gate part 14h by bottom level detection sensor 14b
bTime of height, from a b
3To a c
3With base program model P
0Some b
0To a c
0A part overlap.In addition, set point c
3To a d
3Between gradient and base program model P
0Some c
0To a d
0Between gradient equate.At this moment also be if put b
3With a b
0Overlap, then model P
0With P
3Also overlap.
The 4th represented compensation program model of dotted line among Fig. 3 is to detect the occasion of actual liquid level than the height of the topmost of predetermined slow (late) rising arrival die cavity 14 by top level detection sensor 14a, replaces the 3rd compensation program model P
3And the procedural model that the pressure in the holding furnace is controlled.That is, by the 3rd compensation program model P
3, the time when liquid level rises to the topmost height of die cavity 14 should be a c
3, but because that actual liquid level rises is slow, when at a c
3To d
3Between carry out pressure when control, judge that by top level detection sensor 14a actual liquid level rises to the occasion of height of the topmost of die cavity 14, promptly by the 3rd compensation program model P
3, be transformed to the 4th compensation program model P
4, and by quadruple pass preface model P
4Pressure in the holding furnace is carried out control.Here, the 4th compensation program model P
4Some c
4, promptly be to detect time of height that liquid level rises to the topmost of die cavity 14 by top level detection sensor 14a, some c
4To a d
4With the 3rd compensation program model P
3Some c
3To d
3A part overlaps.At this moment also be as making a c
4, c
3, c
0Overlap, then model P
0, P
3, P
4Also overlap.
Here, by aforementioned base program model P
0To the first compensation program model P
1The conversion or to the 3rd compensation program model P
3Conversion be based on the control device 20 record program, carry out in the moment of the level detection signal input of bottom level detection sensor 14b.And the first compensation program model P
1To the second compensation program model P
2Conversion, the 3rd compensation program model P
3To the 4th compensation program model P
4Conversion, be based on equally in the control device 20 record program, carry out in the level detection signal input time of top level detection sensor 14a.
Below, be illustrated with regard to the placement method of the molten metal of the casting machine of relevant present embodiment.
Shown in the image pattern 1 like that, metal pattern 13 matched moulds are loaded on above the die holder 12, based on Fig. 2, base program model P shown in Figure 3
0Pressure in the holding furnace 16 is begun control.According to this, the molten metal in the crucible 16r rises to the lower surface K of gate part 14h rapidly by cast tubes 15
aHeight, lower surface K from then on
aRelatively slowly enter in the gate part 14h.Here, when at base program model P
0Some a
0To a b
0Between carry out pressure when control, judge that by bottom level detection sensor 14b actual liquid level rises to the upper surface K of gate part 14h
bHeight the time, shown in the image pattern 2 like that, by base program model P
0Be transformed to the first compensation program model.And based on the first compensation program model P
1By a b
1Continuation is carried out control to the pressure in the holding furnace 16, and molten metal is supplied with in the die cavity 14 at leisure.Besides, at the first compensation program model P
1Some b
1To c
1Between carry out pressure when control, when judging that by top level detection sensor 14a actual liquid level rises to the height of topmost of die cavity 14, by the first compensation program model P
1Transform to the second compensation program model P
2And based on the second compensation program model P
2By a c
2Continuation is controlled the pressure in the holding furnace 16, to being filled into the liquation feeding pressurization in the aforementioned die cavity 14.Like this, pressure control one enters into the second compensation program model P
2Some e
2, adding the air bleeding valve 19b that is provided with on the press fit pipe 19 and open, holding furnace 16 carries out exhaust, metal pattern 13 die sinkings.
In addition, at base program model P
0Some b
0To a c
0Between carry out pressure when control, judge that by bottom level detection sensor 14b actual liquid level rises to the upper surface K of gate part 14h
bHeight the time, shown in the image pattern 3 like that, by base program model P
0Be transformed to the 3rd compensation program model P
3And based on the 3rd compensation program model P
3, from a b
3Continuation is controlled the pressure in the holding furnace 16, and liquation slowly infeeds in the die cavity 14.Besides, at the 3rd compensation program model P
3Some c
3To d
3Between carry out pressure when control, when judging that by top level detection sensor 14a actual liquid level rises to the height of topmost of die cavity 14, by the 3rd compensation program model transferring to the four compensation program models.And based on the 4th compensation program model P
4, from a c
4Continuation is controlled the pressure in the holding furnace 16, and the liquation that is filled in the aforementioned die cavity 14 is pressurizeed.Like this, proceed to the 4th compensation program model P when pressure control
4Some e
4The time, add the air bleeding valve 19b that is provided with on the press fit pipe 19 and open, beginning exhaust in the holding furnace 16,13 die sinkings of aforementioned metal mould.
Like this, according to present embodiment, at mold cavity inlet K
bCan detect actual liquid level with topmost two places of die cavity 14, compensate based on the base program model of the time that reaches the liquid level height to initial setting.Therefore, be actually based on the suitable procedural model of having allocated and carry out pressure control, with suitable speed when die cavity is supplied with liquation, also can carry out the feeding pressurization to the liquation after the filling well.Be involved in air thereby can avoid entering in the liquation in the die cavity 14, nor big the appearance easily because the pore that the insufficient pressure that liquation is pressurizeed causes.Therefore can reduce the unfavorable condition of the pressure leakage of withstand voltage part.
In addition, in the present embodiment, the melt filling control method of air injection machine 10 is illustrated, much less suitable equally for lowering die cavity internal pressure suction casting machine of filling liquation in metal pattern.
Claims (3)
1. the melt filling control method of a casting machine, in this control method, produce pressure reduction between the die cavity that makes the inner space of the holding furnace of storing liquation and in mold, form, utilize this pressure reduction, liquation in the aforementioned holding furnace is infeeded in the aforementioned die cavity by the liquation path, it is characterized in that, comprise in this control method: the operation of setting program model, procedural model is determined the time behavior of pressure reduction desired value according to this; Follow the aforementioned procedural model of setting, control the inner space of aforementioned holding furnace and the operation of the pressure reduction between the die cavity; Detect the operation whether liquid level rises to the predeterminated level height in the aforementioned die cavity; When liquid level rises to predeterminated level height in the die cavity, the operation that aforementioned procedural model is compensated immediately; The procedural model of following this compensation is controlled the operation of the pressure reduction between aforementioned holding furnace inner space and the die cavity.
2. as the casting machine melt filling control method of claim 1 record, it is characterized in that: aforementioned predeterminated level height is the height at mold cavity inlet place, arrives moment of the entrance height of aforementioned die cavity at liquid level, and the pressure reduction climbing is reduced.
3. as the casting machine melt filling control method of claim 1 record, it is characterized in that: the topmost height that aforementioned predeterminated level height is a die cavity, arrive moment of aforementioned die cavity topmost height at liquid level, the pressure reduction climbing is increased.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3527295A JPH08224653A (en) | 1995-02-23 | 1995-02-23 | Method for controlling fill-up of molten metal in casting machine |
| JP035272/95 | 1995-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1133763A CN1133763A (en) | 1996-10-23 |
| CN1042105C true CN1042105C (en) | 1999-02-17 |
Family
ID=12437161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96102513A Expired - Fee Related CN1042105C (en) | 1995-02-23 | 1996-02-17 | Melt Filling Control Method for Casting Machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH08224653A (en) |
| CN (1) | CN1042105C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100379509C (en) * | 2003-07-21 | 2008-04-09 | 陆仁志 | Liquid surface suspension pressurization control method for low-pressure casting machine |
| JP2010000545A (en) * | 2009-10-07 | 2010-01-07 | Ariake Serako Kk | Casting method and casting apparatus |
| CN101786152B (en) * | 2010-03-19 | 2012-06-06 | 上海皮尔博格有色零部件有限公司 | Low-pressure casting machine and liquid level pressurizing control system |
| CN102205408A (en) * | 2011-05-20 | 2011-10-05 | 江苏天宏机械工业有限公司 | Inflation digital valve for high pressurization low-pressure die casting machine |
| CN107570690A (en) * | 2017-08-22 | 2018-01-12 | 北京北方恒利科技发展有限公司 | A kind of electromagnetic pouring system |
| CN113477920A (en) * | 2021-07-07 | 2021-10-08 | 上海交通大学 | Molten metal filling node monitoring device and method and anti-gravity casting equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910461A (en) * | 1982-07-08 | 1984-01-19 | Toyota Motor Corp | Method for filling and pressurizing molten metal in low-pressure casting method |
| CN2154140Y (en) * | 1993-03-23 | 1994-01-26 | 黄晓宪 | Liquid level pressure device for low-pressure casting |
| CN2156969Y (en) * | 1993-03-13 | 1994-02-23 | 马清杰 | Liquid surface pressure device for low pressure casting |
| CN1095654A (en) * | 1988-08-22 | 1994-11-30 | 金属铸造技术有限公司 | Countergravity casting method and equipment thereof |
-
1995
- 1995-02-23 JP JP3527295A patent/JPH08224653A/en active Pending
-
1996
- 1996-02-17 CN CN96102513A patent/CN1042105C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5910461A (en) * | 1982-07-08 | 1984-01-19 | Toyota Motor Corp | Method for filling and pressurizing molten metal in low-pressure casting method |
| CN1095654A (en) * | 1988-08-22 | 1994-11-30 | 金属铸造技术有限公司 | Countergravity casting method and equipment thereof |
| CN2156969Y (en) * | 1993-03-13 | 1994-02-23 | 马清杰 | Liquid surface pressure device for low pressure casting |
| CN2154140Y (en) * | 1993-03-23 | 1994-01-26 | 黄晓宪 | Liquid level pressure device for low-pressure casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08224653A (en) | 1996-09-03 |
| CN1133763A (en) | 1996-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1042105C (en) | Melt Filling Control Method for Casting Machine | |
| JP3422650B2 (en) | Spray distribution measuring device and measuring method | |
| US5215141A (en) | Apparatus and method for controlling the countergravity casting of molten metal into molds | |
| CN1089733A (en) | Electronically controlled pneumatic pressure governor and with the method for its regulated fluid pressure | |
| US4488429A (en) | Method and apparatus for measuring injection amount of fuel injector | |
| US6505677B1 (en) | Method and apparatus for casting metal articles with counter-gravity supply of metal to moulds | |
| JPS62104726A (en) | Weight regulator for controllable injection molding machine | |
| US5031805A (en) | Processes and device for dosing free-flowing media | |
| US3951199A (en) | Method and apparatus for low pressure die casting | |
| JP3507577B2 (en) | Liquid filling amount correction method and apparatus | |
| JP3219778B2 (en) | Method and apparatus for casting a metal object in a casting cavity adapted to be filled upward | |
| JP2640814B2 (en) | Automotive suspension control method | |
| JPH04505584A (en) | Method and apparatus for controlling the flow of molten metal | |
| JP3268304B2 (en) | Pressure control device in low pressure casting machine | |
| JPS6171166A (en) | Device for controlling pouring of low-pressure casting machine | |
| US5170839A (en) | Method for determining and regulating the level of a bath of molten metal | |
| JP3625990B2 (en) | Light metal molten metal measuring device | |
| JPS6341088Y2 (en) | ||
| SU909579A1 (en) | Device for regulating metal level in closed crystallizer | |
| JPH10272550A (en) | Method for supplying molten metal and device for supplying molten metal | |
| JP3756040B2 (en) | Metal molten metal dispensing device | |
| JPH0235399Y2 (en) | ||
| JPH01143754A (en) | Molten metal feeding control device for molten metal feeder | |
| JP2592851B2 (en) | Flow control device | |
| JPH0195856A (en) | Pump for supplying molten metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1044807 Country of ref document: HK |