WO2022209504A1 - 鋳造金型の検査方法および鋳造装置 - Google Patents
鋳造金型の検査方法および鋳造装置 Download PDFInfo
- Publication number
- WO2022209504A1 WO2022209504A1 PCT/JP2022/008129 JP2022008129W WO2022209504A1 WO 2022209504 A1 WO2022209504 A1 WO 2022209504A1 JP 2022008129 W JP2022008129 W JP 2022008129W WO 2022209504 A1 WO2022209504 A1 WO 2022209504A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- cavity
- evacuation
- flow path
- gas flow
- Prior art date
Links
- 238000005266 casting Methods 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000007689 inspection Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 97
- 239000002184 metal Substances 0.000 claims description 84
- 239000003566 sealing material Substances 0.000 claims description 16
- 238000011156 evaluation Methods 0.000 claims description 13
- 230000002950 deficient Effects 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/08—Controlling, supervising, e.g. for safety reasons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/161—Controlling or regulating processes or operations for automatic starting the casting process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/14—Machines with evacuated die cavity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2227—Die seals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
Definitions
- the present invention relates to a casting mold inspection method and casting apparatus.
- a vacuum casting system is known.
- the inside of the cavity is evacuated (gas is sucked), and then the molten metal is injected into the cavity for casting. This suppresses gas from entering the molten metal. As a result, it is possible to reduce the occurrence of gas-induced defects (eg, porosity) in castings.
- Japanese Patent Laying-Open No. 2004-243327 discloses a technique for confirming sealing performance of a casting mold. In this technique, a vacuum tank equipped with a vacuum sensor is connected to the casting mold, and the vacuum sensor measures the degree of vacuum in the casting mold.
- An object of the present invention is to solve the problems described above.
- a method for inspecting a casting apparatus is a method for inspecting a casting apparatus provided with a casting mold, wherein the casting mold includes a cavity portion for producing a cast product, and a cavity portion connected to the cavity portion. and a shut-off valve capable of shutting off the first gas flow path, the casting apparatus through the first gas flow path, A vacuuming unit for vacuuming the inside of the cavity is provided, and the inspection method acquires the ultimate pressure in the cavity when a predetermined vacuuming time has elapsed after starting the vacuuming in the cavity. and a step of vacuuming the inside of the cavity and holding the cutoff valve in an open state, and increasing during the predetermined stop time when the predetermined stop time has passed after stopping the vacuum drawing.
- a casting apparatus is a casting apparatus comprising a casting mold, the casting mold having a cavity portion for producing a cast product and a first end connected to the cavity portion. and a shut-off valve capable of shutting off the first gas flow path, and the casting apparatus draws a vacuum in the cavity through the first gas flow path. and a control unit for controlling the vacuuming unit and the shut-off valve, wherein the control unit controls when a predetermined vacuuming time has elapsed after starting the vacuuming of the cavity.
- the control unit controls when a predetermined vacuuming time has elapsed after starting the vacuuming of the cavity.
- the present invention it is possible to provide a casting mold inspection method and a casting apparatus that enable inspection of the sealing properties of the casting apparatus including after the completion of evacuation.
- FIG. 1 is a diagram showing a casting apparatus according to an embodiment.
- FIG. 2 is a flow chart showing the method for inspecting the casting apparatus according to the embodiment.
- FIG. 3 is a diagram showing valves, the opening and closing of shut-off valves, and changes in pressure over time.
- FIG. 4 is a flowchart showing the details of the process of acquiring the ultimate pressure.
- FIG. 5 is a flow diagram showing the details of the process of obtaining the return pressure.
- the casting apparatus 10 shown in FIG. 1 includes a casting mold 12.
- the casting mold 12 has a fixed mold 12a and a movable mold 12b.
- the fixed mold 12a and the movable mold 12b are arranged in the left-right direction (horizontal direction) of the figure and face each other.
- the movable mold 12b moves horizontally so as to be able to contact and separate from the fixed mold 12a.
- the fixed mold 12a and the movable mold 12b have a pair of mating surfaces facing each other.
- the mating surface of the fixed mold 12a and the mating surface of the movable mold 12b have recesses 16a and 16b, respectively.
- the recessed portion 16a and the recessed portion 16b constitute the cavity portion 16. As shown in FIG.
- the casting mold 12 is closed by bringing the movable mold 12b into contact with the fixed mold 12a. That is, a cavity portion 16 is formed inside the casting mold 12 .
- a gap between the fixed mold 12a and the movable mold 12b is sealed with a sealing material C1 (for example, an O-ring).
- a molten metal supply unit 18 is connected to the casting mold 12 .
- the molten metal supply unit 18 is attached to the fixed mold 12 a and supplies molten metal into the cavity 16 .
- the melt feeder 18 has a sleeve 20 and a plunger 22 .
- the plunger 22 has a plunger rod 22a and a plunger tip 22b.
- the plunger tip 22b is arranged at the end of the plunger rod 22a and advances and retreats inside the sleeve 20 in the axial direction of the sleeve 20 .
- a side surface of the sleeve 20 is formed with a molten metal injection port 20a.
- the molten metal injection port 20 a is an injection port for injecting molten metal into the sleeve 20 .
- the fixed mold 12 a has a molten metal holding portion 24 that communicates with the inside of the sleeve 20 .
- a runner 26 is arranged between the fixed mold 12a and the movable mold 12b.
- the hot tub 26 connects the molten metal holding portion 24 and the cavity portion 16 .
- the plug member PM has a columnar portion PM1, a sealing material PM2, and a handle PM3.
- the columnar portion PM1 has a columnar shape corresponding to the inside of the molten metal holding portion 24 (for example, a columnar shape or a prismatic shape).
- a ring-shaped sealing material PM2 is arranged around the peripheral side surface of the molten metal holding portion 24 .
- the sealing material PM2 has elasticity and seals between the inner peripheral surface of the molten metal holding portion 24 and the columnar portion PM1.
- the handle PM3 is used for inserting the plug member PM into the molten metal supply part 18. As shown in FIG. After the fixed mold 12a and the movable mold 12b are separated from each other, the plug member PM is inserted into the molten metal holding portion 24 in the direction from the movable mold 12b toward the fixed mold 12a.
- the movable mold 12b has an overflow portion 30 downstream of the cavity portion 16.
- the molten metal supplied to the cavity portion 16 reaches the overflow portion 30 and then solidifies inside the cavity portion 16 and the overflow portion 30 .
- the solidified molten metal is removed from the casting mold 12 as a casting.
- a push pin 32 and a push plate 34 are attached to the movable mold 12b in order to facilitate removal of the casting from the cavity portion 16.
- the movable mold 12b has a through hole 36 that communicates the cavity portion 16 with the outside of the casting mold 12 .
- the ejector pin 32 is retained within the through hole 36 .
- One end of the push pin 32 is connected to the push plate 34 .
- the other end of the ejector pin 32 is inserted into the cavity portion 16 by pushing the ejector plate 34 toward the fixed mold 12a. As a result, the casting can be easily removed from the cavity portion 16 .
- An internal space 38 and a gas flow path 40 are formed inside the movable mold 12b.
- the internal space 38 communicates with the through hole 36 .
- the gas channel 40 is connected with the internal space 38 .
- a sealing material C2 is arranged in the through hole 36 outside the internal space 38 .
- the sealing material C2 seals the space between the through hole 36 and the ejector pin 32 .
- the sealing material C2 seals this space between the end 40a of the gas flow path 40 and the outside.
- the internal space 38 , the gas flow path 40 , and the sealing material C ⁇ b>2 all prevent air from flowing into the cavity 16 through the gap between the through hole 36 and the push pin 32 .
- the sealing material C2 seals between the through hole 36 and the push pin 32, so that air flows into the cavity portion 16 through the gap between the through hole 36 and the push pin 32. hinder However, since the push pin 32 needs to slide against the through hole 36 for the operation of the push pin 32, the sealing material C2 has a sealing limit. Therefore, the inside of the through hole 36 between the internal space 38 and the cavity portion 16 is sucked through the internal space 38 and the gas flow path 40 . This suction reduces the inflow of air into the cavity 16 via the through hole 36 in which the sealing material C2 is arranged.
- the casting mold 12 has a shutoff valve 42 and a gas flow path 44 .
- a shut-off valve 42 is arranged between the overflow section 30 and the gas flow path 44 .
- the shutoff valve 42 prevents the molten metal from entering the gas flow path 44 from the overflow portion 30 by shutting off the gas flow path 44 .
- the gas channel 44 has an end portion 44a (first end) and an end portion 44b (third end) on opposite sides.
- the end portion 44 a is connected to the cavity portion 16 via the shutoff valve 42 .
- the end portion 44b is connected to the evacuation portion 50 via the pressure detector D1, the valve B1, and the switching valve 48.
- the evacuation section 50 evacuates the inside of the cavity section 16 via the gas flow path 44 and the overflow section 30 (gas suction).
- the evacuation section 50 has a tank 50a and a vacuum pump 50b.
- the evacuation section 50 evacuates the inside of the cavity section 16 by a tank 50a depressurized by a vacuum pump 50b.
- the gas channel 40 has an end portion 40a (second end) and an end portion 40b (fourth end) on opposite sides.
- the end portion 40 a is connected to the cavity portion 16 via the internal space 38 .
- the end portion 40b is connected to the evacuation portion 50 via the pressure detector D2, the valve B2, and the switching valve 48.
- the evacuation section 50 also evacuates the inside of the cavity section 16 via the gas flow path 40 and the gap between the through hole 36 and the push pin 32 . That is, the evacuation section 50 can evacuate the inside of the cavity section 16 through both the gas flow path 44 and the gas flow path 40 .
- An air supply unit 52 is connected to the switching valve 48 together with the evacuation unit 50 .
- the air supply section 52 blows air into the opened casting mold 12 via the switching valve 48 , the gas flow path 44 and the overflow section 30 (air blow). Air is supplied from the air supply portion 52 to the end portion 44 b (third end) of the gas flow path 44 . As a result, the gas flow path 44, the cutoff valve 42, and the like are cleaned.
- the switching valve 48 switches connection between the gas flow path 44 and the evacuation section 50 and connection between the gas flow path 44 and the air supply section 52 .
- a pressure detector D1 and a valve B1 are arranged between the gas flow path 44 and the switching valve 48 .
- the valve B1 is a sluice valve for switching connection/disconnection between the gas flow path 44 and the evacuation section 50 (or the air supply section 52).
- the pressure detector D1 measures the pressure P at the third end (end 44b) of the gas flow path 44.
- a pressure detector D ⁇ b>2 and a valve B ⁇ b>2 are arranged between the gas flow path 40 and the switching valve 48 .
- the valve B2 is a gate valve that switches whether or not the gas passage 40 and the evacuation section 50 (or the air supply section 52) are connected.
- the pressure detector D2 measures the pressure P at the fourth end (end 40b) of the gas channel 40. As shown in FIG.
- the casting apparatus 10 has a control section 62 , a storage section 64 and an input/output section 66 .
- the casting device 10 inspects the sealing performance of the casting device 10 .
- the control unit 62 is composed of hardware (eg processor) and software (eg program).
- the control unit 62 controls the molten metal supply unit 18 , the cutoff valve 42 , the switching valve 48 , the valves B ⁇ b>1 and B ⁇ b>2 , the evacuation unit 50 and the air supply unit 52 .
- Control unit 62 receives signals from pressure detector D1 and pressure detector D2.
- the storage unit 64 is, for example, a hard disk or a semiconductor memory.
- the storage unit 64 stores evacuation times T1a and T1b, a stop time T2, a first threshold Th1, a second threshold Th2, and a third threshold Th3, which will be described later.
- the input/output unit 66 is a device for inputting/outputting information between the control unit 62 and the operator.
- the input/output unit 66 is, for example, a keyboard and a display device.
- FIG. 2 is a flow diagram showing an inspection method for the casting apparatus 10 according to the embodiment.
- FIG. 3 is a diagram showing temporal changes in the opening and closing of the valves B1 and B2, temporal changes in the opening and closing of the cutoff valve 42, and temporal changes in the pressure P. As shown in FIG. Hereinafter, a method for inspecting the casting apparatus 10 according to the embodiment will be described with reference to FIGS. 2 and 3.
- FIG. 1 is a flow diagram showing an inspection method for the casting apparatus 10 according to the embodiment.
- FIG. 3 is a diagram showing temporal changes in the opening and closing of the valves B1 and B2, temporal changes in the opening and closing of the cutoff valve 42, and temporal changes in the pressure P.
- the method for inspecting the casting apparatus 10 has a step of sealing between the cavity portion 16 and the molten metal supply portion 18 (step S1).
- step S1 The method for inspecting the casting apparatus 10 has a step of sealing between the cavity portion 16 and the molten metal supply portion 18 (step S1).
- the plug member PM for sealing into the molten metal holding portion 24 the space between the cavity portion 16 and the molten metal supply portion 18 is sealed without using molten metal. That is, the casting mold 12 is opened, and then the plug member PM is inserted into the molten metal holding portion 24 in the direction from the movable mold 12b toward the fixed mold 12a, and then the casting mold 12 is closed.
- the inside of the cavity 16 is preferably evacuated in order to position the plug member PM.
- the control unit 62 controls the valve B1, the valve B2, and the shutoff valve 42 so that during time T0 (from time t0s to time t0e), the valve B1, valve B2, and By keeping the cutoff valve 42 open, the cavity 16 is evacuated. Due to this evacuation, the plug member PM moves in the molten metal holding portion 24 in the direction from the fixed mold 12a toward the movable mold 12b, and contacts the movable mold 12b exposed to the molten metal holding portion 24. (See Figure 1).
- the exposed movable mold 12b functions as the bottom of the molten metal holding portion 24 that defines the internal space of the molten metal holding portion 24.
- the contact of the plug member PM with the movable mold 12b means that the plug member PM is positioned.
- the evacuation time T0 may be shorter than the evacuation time T1a for obtaining the ultimate pressure P1, which will be described later.
- the degree of vacuum in the cavity portion 16 does not have to be so high. That is, the pressure in the cavity portion 16 may be equal to or lower than the pressure P0 (see FIG. 3) having a predetermined pressure difference (negative pressure) with respect to the atmospheric pressure.
- Pc A ⁇ Pm...Equation (1)
- A (V0+Vm)/(V0+Vc) V0: internal volume in the casting mold 12 excluding the molten metal holding portion 24
- the method for inspecting the casting apparatus 10 includes a step (step S2) of acquiring the ultimate pressure P1 in the cavity portion 16 after sealing the space between the cavity portion 16 and the molten metal supply portion 18 .
- FIG. 4 is a flowchart showing the details of the process of obtaining the ultimate pressure P1.
- the ultimate pressure P1 can be obtained as follows. First, the evacuation of the cavity portion 16 is started (step S21). Thereafter, the ultimate pressure P1 in the cavity portion 16 is obtained when a predetermined evacuation time T1a has elapsed since the start of evacuation in the cavity portion 16 (steps S22 and S23).
- control unit 62 controls the shutoff valve 42, the evacuation unit 50, the valve B1, and the valve B2, so that, as shown in FIG. With 42 open, cause both valve B1 and valve B2 to open. As a result, the control unit 62 starts evacuating the cavity 16 through both the gas flow path 44 (first gas flow path) and the gas flow path 40 (second gas flow path) (step S21). ).
- the control unit 62 acquires the ultimate pressure P1a when a predetermined evacuation time T1a has passed since the start of evacuation (time t1e) (steps S22 and S23).
- the ultimate pressure P1a is based on the pressure at the end 44b of the gas flow path 44 from the pressure detector D1.
- As the predetermined evacuation time T1a an average evacuation time during casting can be adopted.
- the measured ultimate pressure P1a can be corrected by multiplying the ultimate pressure P1a by the coefficient A in equation (1).
- the control unit 62 can also use the second ultimate pressure P1b measured by the pressure detector D2 as the ultimate pressure P1. That is, when the predetermined evacuation time T1a has elapsed from the start of evacuation, the control unit 62 acquires the second ultimate pressure P1b based on the pressure measured by the pressure detector D2.
- the pressure detector D2 measures the pressure at the end 40b of the gas flow path 40.
- FIG. The measured second ultimate pressure P1b can be corrected by multiplying the second ultimate pressure P1b by the coefficient A in equation (1).
- the inspection method for the casting apparatus 10 has a step of acquiring the return pressure ⁇ P inside the cavity portion 16 (step S3). After the inside of the cavity portion 16 reaches a certain ultimate pressure P1 by vacuuming, the controller 62 stops the vacuuming.
- the return pressure .DELTA.P means the increased pressure increased during the stop time.
- FIG. 5 is a flow diagram showing the details of the process of acquiring the return pressure ⁇ P.
- the return pressure ⁇ P can be obtained as follows. That is, the control unit 62 opens both the valves B1 and B2 at the time t2s, as shown in FIG. 3, in the same manner as when the ultimate pressure P1 is obtained. As a result, the controller 62 starts vacuuming the cavity 16 (step S31). After that, the control unit 62 obtains the first pressure Pa in the cavity 16 when the predetermined evacuation time T1b has elapsed since the start of evacuation (time t2e1) (steps S32 and S33).
- the control section 62 stops the evacuation of the cavity section 16 (step S34).
- the control unit 62 obtains the second pressure Pb in the cavity 16 when the predetermined stop time T2 has passed (time t2e2) after stopping the vacuuming in the cavity 16 (step S35 and S36).
- the following average time during casting can be employed as the predetermined stop time T2.
- This average time means the average time from the completion of evacuation to the start of injection of molten metal from the molten metal supply section 18 into the cavity section 16 .
- step S34 the control unit 62 closes the valves B1 and B2 to stop the evacuation from the gas flow paths 44 and 40.
- the controller 62 keeps the cutoff valve 42 open. This is because the pressure detector D1 measures the pressure at the end portion 44b of the gas flow path 44 (that is, the pressure inside the cavity portion 16).
- the predetermined evacuation time T1b in step S32 when obtaining the restored pressure ⁇ P is preferably longer than the predetermined evacuation time T1a in step S22 when obtaining the ultimate pressure P1.
- the reached first pressure Pa can be stabilized.
- steps S34 to S37 for obtaining the return pressure ⁇ P may be replaced with time t2e1 and may be started from time t1e (immediately after obtaining the ultimate pressure P1).
- steps S31 to S34 can be omitted. This is because steps S31 to S33 repeat substantially the same steps as steps S21 to S23. This makes it possible to obtain the return pressure ⁇ P more easily.
- the control unit 62 evaluates the sealing performance of the casting apparatus 10 (step S4).
- This sealing property includes a first sealing property based on the ultimate pressure P1 and a second sealing property based on the return pressure ⁇ P.
- the first sealability means the sealability of the casting apparatus 10 as a whole, including the casting apparatus 10 itself, the piping of the casting apparatus 10, and the casting mold 12.
- the first sealing property is evaluated based on the ultimate pressure P1. That is, when the ultimate pressure P1a is equal to or lower than the first threshold value Th1, the control unit 62 can determine that the first sealing property is good.
- the ultimate pressure P1a is based on the measurement result of the pressure detector D1 (gas flow path 44). Also, when the ultimate pressure P1a is greater than the first threshold value Th1, the control unit 62 can determine that the first sealing performance is poor.
- the control unit 62 may use both the ultimate pressure P1a and the second ultimate pressure P1b to evaluate the first sealability.
- the ultimate pressure P1a is based on the measurement result of the pressure detector D1 (gas flow path 44).
- the second ultimate pressure P1b is based on the measurement result of the pressure detector D2 (gas flow path 40). That is, when the ultimate pressure P1a is equal to or less than the first threshold Th1 and the second ultimate pressure P1b is equal to or less than the third threshold Th3, the control unit 62 may determine that the first sealing property is good. .
- the controller 62 may determine that the first sealing performance is poor. . This improves the reliability of evaluation of the first sealability.
- the control unit 62 evaluates the second sealing performance of the casting device 10 based on the pressure return ⁇ P.
- the second sealing property rather refers to the sealing property of the casting mold 12 .
- the control unit 62 can determine that the second sealing property is good.
- the control unit 62 can determine that the second sealing performance is poor. Further, by adding the return pressure ⁇ P to the ultimate pressure P1a, the pressure (degree of vacuum) in the cavity portion 16 during casting (during injection of molten metal) can be estimated.
- the control unit 62 causes the input/output unit 66 to display the obtained ultimate pressure P1 (P1a and P1b), the return pressure ⁇ P, and the evaluation result of the sealability. Based on this evaluation result, replacement of the casting device 10 and the sealing member of the casting mold 12, and execution of casting by the casting device 10 are performed.
- a method for inspecting a casting apparatus is a method for inspecting a casting apparatus including a casting mold (12), wherein the casting mold includes a cavity (16) for producing a casting, a first gas flow path (44) having a first end (44a) connected to the cavity; and a shut-off valve (42) capable of shutting off the first gas flow path;
- the apparatus includes an evacuation section (50) for evacuating the inside of the cavity through the first gas flow path, and the inspection method comprises starting the evacuation of the cavity and performing a predetermined A step of acquiring the ultimate pressure (P1a) in the cavity when the evacuation time (T1a) has elapsed (step S2); a step of obtaining the increased pressure (restored pressure ⁇ P) in the cavity portion that increased during the predetermined stop time (T2) after the evacuation was stopped (step S3).
- step S4 a step of evaluating a first sealing property of the casting device based on the ultimate pressure
- step S4 a step of evaluating a second sealing property of the casting device based on the increased pressure
- the step of evaluating the first sealing property includes determining that the first sealing property is good when the ultimate pressure is equal to or lower than the first threshold value (Th1), and determining that the ultimate pressure is the first a step of determining that the first sealing property is defective when the threshold value of is greater than the threshold value. This enables accurate evaluation of the first sealability.
- the step of evaluating the second sealing property includes determining that the second sealing property is good when the increased pressure is equal to or less than a second threshold value (Th2), and determining that the increased pressure is equal to or lower than the second a step of determining that the second sealing property is defective when the threshold value of is greater than the threshold value of This enables accurate evaluation of the second sealing property.
- Th2 a second threshold value
- the step of obtaining the ultimate pressure includes a step of starting the vacuuming of the cavity (step S21), and a step of starting the vacuuming of the cavity after the predetermined vacuuming time has elapsed.
- obtaining the ultimate pressure in the cavity includes a step of starting vacuuming in the cavity (step S31);
- a step of obtaining a first pressure (Pa) in the cavity portion when a second predetermined vacuuming time longer than the predetermined vacuuming time has elapsed since the start of vacuuming in the cavity steps S32 and S33).
- step S34 a step of stopping vacuuming in the cavity
- step S37 a second pressure in the cavity when the predetermined stop time has elapsed after stopping the vacuuming in the cavity.
- step S37 obtaining the increased pressure by subtracting the first pressure from the second pressure
- the casting mold includes a molten metal holding part (24) for holding molten metal to be injected into the cavity part, and the inspection method includes: before the step of acquiring the ultimate pressure, A step of sealing the inside of the cavity from the outside by inserting a plug member (PM) for an airtight seal into the cavity (step S1), and the step of obtaining the ultimate pressure includes inserting the plug member (PM) into the molten metal holding portion. and when the plug member is not inserted into the molten metal holding portion and injection of the molten metal into the cavity portion is started.
- a step (step S23) of correcting the ultimate pressure based on the difference in volume (V1, V2), and the step of obtaining the increased pressure includes correcting the increased pressure based on the difference in the internal volume. (step S37).
- the inside of the cavity is evacuated for a time (T0) shorter than a predetermined evacuation time, and the A step of bringing the plug member into contact with the bottom of the molten metal holder is included.
- the casting mold is formed so as to communicate between the cavity portion and the outside of the casting mold, and has a through hole for holding an ejection pin (32) for ejecting the casting from the cavity portion.
- a second gas having a hole (36) and a second end (40a) formed inside the casting mold and connected to the space (inner space 38) between the through hole and the push pin.
- the evacuation unit evacuates the inside of the cavity through both the first gas flow path and the second gas flow path
- the step of acquiring the ultimate pressure includes: starting to draw a vacuum in the cavity from both the first gas flow path and the second gas flow path in the above state; obtaining the ultimate pressure based on the pressure at the third end (44b) of the first gas flow path with the shut-off valve open. and stopping the evacuation from the second gas flow path, and reducing the increased pressure based on the pressure at the third end of the first gas flow path with the shutoff valve open. and obtaining.
- the ultimate pressure and the increased pressure when the inside of the cavity is evacuated through both the first gas flow path and the second gas flow path can be accurately obtained.
- the step of obtaining the ultimate pressure includes a fourth gas flow path on the opposite side of the second end of the second gas flow path when the predetermined evacuation time has elapsed after the start of the evacuation.
- the step of obtaining a second ultimate pressure at the end (40b), and evaluating the first sealing performance includes: the ultimate pressure being equal to or lower than a first threshold, and the second ultimate pressure being When the third threshold (Th3) or less, it is determined that the first sealing property is good, and the ultimate pressure is greater than the first threshold, or the second ultimate pressure is the third
- a casting apparatus is a casting apparatus comprising a casting mold, the casting mold having a first end having a cavity portion for producing a casting and a first end connected to the cavity portion.
- the casting apparatus has a gas flow path and a shutoff valve capable of shutting off the first gas flow path, and the casting apparatus is provided with a vacuum for evacuating the inside of the cavity through the first gas flow path.
- the control unit determines that the first sealing performance is good when the ultimate pressure is equal to or less than a first threshold value, and is larger than the threshold value, it is determined that the first sealing property is defective. This enables accurate evaluation of the first sealability.
- the control unit determines that the second sealing property is good when the increased pressure is equal to or less than a second threshold value, and the increased pressure exceeds the second threshold value. is larger than the threshold value, the second sealing property is determined to be defective. This enables accurate evaluation of the second sealing property.
- the control unit controls the evacuation unit to start evacuation in the cavity, and after starting evacuation in the cavity, the predetermined evacuation Obtaining the ultimate pressure in the cavity after the lapse of time, the control unit controls the evacuation unit to start evacuation in the cavity in acquiring the increased pressure, and A first pressure in the cavity is obtained when a second predetermined vacuuming time longer than the predetermined vacuuming time has elapsed since the start of vacuuming in the cavity, and the vacuuming unit is controlled. to stop the evacuation of the cavity, obtain the second pressure in the cavity when the predetermined stop time elapses after the evacuation of the cavity is stopped, and obtain the second pressure The increased pressure is determined by subtracting the first pressure from the pressure of .
- the ultimate pressure and the increased pressure can be accurately obtained. Further, by setting the predetermined evacuation time at the time of obtaining the increased pressure longer than the predetermined evacuation time at the time of obtaining the ultimate pressure, the first time reached according to the predetermined evacuation time at the time of obtaining the increased pressure The pressure can be stabilized and the error of increased pressure can be reduced.
- the casting mold includes a molten metal holding portion for holding molten metal to be injected into the cavity portion, a plug member inserted into the molten metal holding portion and sealing the inside of the molten metal holding portion airtightly from the outside, wherein, in obtaining the ultimate pressure, when the plug member is inserted into the molten metal holding portion, when the plug member is not inserted into the molten metal holding portion, and when the plug member is not inserted into the cavity portion, Based on the difference in the internal volume of the molten metal holding portion communicating with the cavity portion from when the injection of the molten metal is started, the control portion corrects the ultimate pressure based on the difference in the internal volume, and the control portion corrects the internal volume in acquiring the increased pressure. The increased pressure is corrected based on the volume difference. As a result, the ultimate pressure and the increased pressure during casting can be obtained with high accuracy without performing actual casting.
- the casting mold includes a through hole formed to communicate between the cavity and the outside of the casting mold and holding an ejection pin for ejecting the casting from the cavity; a second gas flow path formed inside the casting mold and having a second end connected to the space between the through hole and the ejector pin; and between the through hole and the ejector pin. and a sealing material that seals between the second end of the space and the outside, wherein the evacuation section is operated through both the first gas flow path and the second gas flow path.
- the inside of the cavity is evacuated, and the control unit controls the evacuating unit and the shutoff valve in acquiring the ultimate pressure, and with the shutoff valve open, the first gas flow path and the Start vacuuming in the cavity from both of the second gas flow paths, and determine the ultimate pressure based on the pressure at the third end opposite to the first end of the first gas flow path is acquired, and the control unit controls the evacuation unit and the shutoff valve in acquiring the increased pressure, and in a state where the shutoff valve is open, the first gas flow path and the second gas flow path
- the increased pressure is obtained based on the pressure at the third end of the first gas flow path with the isolation valve open, with the vacuum drawn from the gas flow path stopped.
- the control unit controls, when the predetermined vacuuming time has elapsed since the start of the vacuuming, obtains a second ultimate pressure at the fourth end of the control unit, in the evaluation of the first sealing property, the ultimate pressure is equal to or less than the first threshold value, and the second ultimate pressure is the second When it is equal to or less than the threshold value of 3, it is determined that the first sealing performance is good, and when the ultimate pressure is greater than the first threshold value, or when the second ultimate pressure is greater than the third threshold value Then, it is determined that the first sealing property is defective.
- the first sealing performance can be evaluated more accurately.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Pc=A・Pm …式(1)
A=(V0+Vm)/(V0+Vc)
V0:溶湯保持部24を除く鋳造金型12内の内部容積
上記各実施形態から把握しうる発明について、以下に記載する。
Claims (15)
- 鋳造金型(12)を備える鋳造装置(10)の検査方法であって、
前記鋳造金型は、鋳造品を作成するためのキャビティ部(16)と、前記キャビティ部に接続された第1端(44a)を有する第1のガス流路(44)と、前記第1のガス流路を遮断可能な遮断弁(42)と、を有し、
前記鋳造装置は、前記第1のガス流路を介して、前記キャビティ部内を真空引きするための真空引き部(50)を備え、
前記検査方法は、
前記キャビティ部内の真空引きを開始してから所定の真空引き時間(T1a)が経過したときの、前記キャビティ部内の到達圧力(P1a)を取得する工程(S2)と、
前記キャビティ部内の真空引きを行い、前記遮断弁を開状態に保持した状態で、真空引きを停止してから所定の停止時間(T2)が経過したときの、前記所定の停止時間中に増加した前記キャビティ部内の増加圧力(ΔP)を取得する工程(S3)と、
前記到達圧力に基づいて前記鋳造装置の第1のシール性を評価する工程(S4)と、
前記増加圧力に基づいて前記鋳造装置の第2のシール性を評価する工程(S4)と、
を有する、鋳造装置の検査方法。 - 請求項1に記載の鋳造装置の検査方法において、
前記第1のシール性を評価する工程は、前記到達圧力が第1の閾値(Th1)以下のときに、前記第1のシール性が良好と判断し、前記到達圧力が前記第1の閾値より大きいときに、前記第1のシール性が不良と判断する工程を有する、鋳造装置の検査方法。 - 請求項1又は2に記載の鋳造装置の検査方法において、
前記第2のシール性を評価する工程は、前記増加圧力が第2の閾値(Th2)以下のときに、前記第2のシール性が良好と判断し、前記増加圧力が前記第2の閾値より大きいときに、前記第2のシール性が不良と判断する工程を有する、鋳造装置の検査方法。 - 請求項1~3のいずれか1項に記載の鋳造装置の検査方法において、
前記到達圧力を取得する工程は、
前記キャビティ部内の真空引きを開始する工程(S21)と、
前記キャビティ部内の真空引きを開始してから前記所定の真空引き時間が経過したときの、前記キャビティ部内の前記到達圧力を得る工程(S22、S23)と、
を有し、
前記増加圧力を取得する工程は、
前記キャビティ部内の真空引きを開始する工程(S31)と、
前記キャビティ部内の真空引きを開始してから前記所定の真空引き時間より長い第2の所定の真空引き時間が経過したときの、前記キャビティ部内の第1の圧力(Pa)を得る工程(S32、S33)と、
前記キャビティ部内の真空引きを停止する工程(S34)と、
前記キャビティ部内の真空引きを停止してから前記所定の停止時間が経過したときの、前記キャビティ部内の第2の圧力を得る工程(S35、S36)と、
前記第2の圧力から前記第1の圧力を減算することによって、前記増加圧力を求める工程(S37)と、
を有する、鋳造装置の検査方法。 - 請求項1~4のいずれか1項に記載の鋳造装置の検査方法において、
前記鋳造金型は、前記キャビティ部内に注入する溶湯を保持するための溶湯保持部(24)を備え、
前記検査方法は、
前記到達圧力を取得する工程の前に、前記溶湯保持部内に気密シール用の栓部材(PM)を挿入して、前記キャビティ部内を外部から封止する工程(S1)を有し、
前記到達圧力を取得する工程は、前記溶湯保持部内に前記栓部材が挿入されたときと、前記溶湯保持部内に前記栓部材が挿入されず、且つ、前記キャビティ部内への溶湯の注入が開始されるときと、の前記キャビティ部に連通する前記溶湯保持部の内部容積(V1、V2)の相違に基づいて、前記到達圧力を補正する工程(S23)を有し、
前記増加圧力を取得する工程は、前記内部容積の相違に基づいて、前記増加圧力を補正する工程(S37)を有する、鋳造装置の検査方法。 - 請求項5に記載の鋳造装置の検査方法において、
前記キャビティ部内を外部から封止する工程は、前記溶湯保持部内に前記栓部材を挿入した後に、前記キャビティ部内を前記所定の真空引き時間より短い時間だけ真空引きして、前記栓部材を前記溶湯保持部の底に当接させる工程を有する、鋳造装置の検査方法。 - 請求項1~6のいずれか1項に記載の鋳造装置の検査方法において、
前記鋳造金型は、
前記キャビティ部と前記鋳造金型の外部とを連通するように形成され、且つ、前記キャビティ部から前記鋳造品を押し出すための押し出しピン(32)を保持する貫通孔(36)と、
前記鋳造金型の内部に形成され、且つ、前記貫通孔と前記押し出しピンとの間の空間(38)に接続される第2端(40a)を有する第2のガス流路(40)と、
前記貫通孔と前記押し出しピンとの間の空間の、前記第2のガス流路の前記第2端と外部との間を封止する封止材(C2)と、
を備え、
前記真空引き部は、前記第1のガス流路および前記第2のガス流路の双方を介して前記キャビティ部内を真空引きし、
前記到達圧力を取得する工程は、
前記遮断弁が開いた状態で、前記第1のガス流路および前記第2のガス流路の双方からの前記キャビティ部内の真空引きを開始する工程と、
前記第1のガス流路の前記第1端の反対側の第3端(44b)での圧力に基づいて、前記到達圧力を取得する工程を有し、
前記増加圧力を取得する工程は、
前記遮断弁が開いた状態で、前記第1のガス流路および前記第2のガス流路からの真空引きを停止する工程と、
前記遮断弁が開いた状態での前記第1のガス流路の前記第3端での圧力に基づいて、前記増加圧力を取得する工程と、
を有する、鋳造装置の検査方法。 - 請求項7に記載の鋳造装置の検査方法において、
前記到達圧力を取得する工程は、前記真空引きを開始してから前記所定の真空引き時間が経過したときの、前記第2のガス流路の前記第2端の反対側の第4端(40b)での第2の到達圧力を取得する工程を有し、
前記第1のシール性を評価する工程は、前記到達圧力が第1の閾値以下、且つ、前記第2の到達圧力が第3の閾値(Th3)以下のときに、前記第1のシール性が良好と判断し、前記到達圧力が前記第1の閾値より大きいか、又は、前記第2の到達圧力が前記第3の閾値より大きいときに、前記第1のシール性が不良と判断する工程を有する、鋳造装置の検査方法。 - 鋳造金型を備える鋳造装置であって、
前記鋳造金型は、鋳造品を作成するためのキャビティ部と、前記キャビティ部に接続された第1端を有する第1のガス流路と、前記第1のガス流路を遮断可能な遮断弁と、を有し、
前記鋳造装置は、
前記第1のガス流路を介して、前記キャビティ部内を真空引きするための真空引き部と、
前記真空引き部および前記遮断弁を制御する制御部と、
を備え、
前記制御部は、
前記キャビティ部内の真空引きを開始してから所定の真空引き時間が経過したときの、前記キャビティ部内の到達圧力を取得し、
前記キャビティ部内の真空引きを行い、前記遮断弁を開状態に保持した状態で、真空引きを停止してから所定の停止時間が経過したときの、前記所定の停止時間中に増加した前記キャビティ部内の増加圧力を取得し、
前記到達圧力に基づいて前記鋳造装置の第1のシール性を評価し、
前記増加圧力に基づいて前記鋳造装置の第2のシール性を評価する、鋳造装置。 - 請求項9に記載の鋳造装置において、
前記制御部は、前記第1のシール性の評価において、前記到達圧力が第1の閾値以下のときに、前記第1のシール性が良好と判断し、前記到達圧力が前記第1の閾値より大きいときに、前記第1のシール性が不良と判断する、鋳造装置。 - 請求項9又は10に記載の鋳造装置において、
前記制御部は、前記第2のシール性の評価において、
前記増加圧力が第2の閾値以下のときに、前記第2のシール性が良好と判断し、前記増加圧力が前記第2の閾値より大きいときに、前記第2のシール性が不良と判断する、鋳造装置。 - 請求項9~11のいずれか1項に記載の鋳造装置において、
前記制御部は、前記到達圧力の取得において、
前記真空引き部を制御して、前記キャビティ部内の真空引きを開始させ、
前記キャビティ部内の真空引きを開始してから前記所定の真空引き時間が経過したときの、前記キャビティ部内の前記到達圧力を得て、
前記制御部は、前記増加圧力の取得において、
前記真空引き部を制御して、前記キャビティ部内の真空引きを開始させ、
前記キャビティ部内の真空引きを開始してから前記所定の真空引き時間より長い第2の所定の真空引き時間が経過したときの、前記キャビティ部内の第1の圧力を得て、
前記真空引き部を制御して、前記キャビティ部内の真空引きを停止させ、
前記キャビティ部内の真空引きを停止してから前記所定の停止時間が経過したときの、前記キャビティ部内の第2の圧力を得て、
前記第2の圧力から前記第1の圧力を減算することによって、前記増加圧力を求める、鋳造装置。 - 請求項9~12のいずれか1項に記載の鋳造装置において、
前記鋳造金型は、前記キャビティ部内に注入する溶湯を保持するための溶湯保持部と、前記溶湯保持部内に挿入され、前記溶湯保持部内を外部から気密に封止する栓部材と、を備え、
前記制御部は、前記到達圧力の取得において、前記溶湯保持部内に前記栓部材が挿入されたときと、前記溶湯保持部内に前記栓部材が挿入されず、且つ、前記キャビティ部内への溶湯の注入が開始されるときと、前記キャビティ部に連通する前記溶湯保持部の内部容積の相違に基づいて、前記到達圧力を補正し、
前記制御部は、前記増加圧力の取得において、前記内部容積の相違に基づいて、前記増加圧力を補正する、鋳造装置。 - 請求項9~13のいずれか1項に記載の鋳造装置において、
前記鋳造金型は、
前記キャビティ部と前記鋳造金型の外部とを連通するように形成され、且つ、前記キャビティ部から前記鋳造品を押し出すための押し出しピンを保持する貫通孔と、
前記鋳造金型の内部に形成され、且つ、前記貫通孔と前記押し出しピンとの間の空間に接続される第2端を有する第2のガス流路と、
前記貫通孔と前記押し出しピンとの間の空間の、前記第2端と外部との間を封止する封止材と、
を備え、
前記真空引き部は、前記第1のガス流路および前記第2のガス流路の双方を介して前記キャビティ部内を真空引きし、
前記制御部は、前記到達圧力の取得において、
前記真空引き部および前記遮断弁を制御して、前記遮断弁が開いた状態で、前記第1のガス流路および前記第2のガス流路の双方からの前記キャビティ部内の真空引きを開始させ、
前記第1のガス流路の前記第1端と反対側の第3端での圧力に基づいて、前記到達圧力を取得し、
前記制御部は、前記増加圧力の取得において、
前記真空引き部および前記遮断弁を制御して、前記遮断弁が開いた状態で、前記第1のガス流路および前記第2のガス流路からの真空引きを停止させ、
前記遮断弁が開いた状態での前記第1のガス流路の前記第3端での圧力に基づいて、前記増加圧力を取得する、鋳造装置。 - 請求項14に記載の鋳造装置において、
前記制御部は、前記到達圧力の取得において、前記真空引きを開始してから前記所定の真空引き時間が経過したときの、前記第2のガス流路の前記第2端と反対側の第4端での第2の到達圧力を取得し、
前記制御部は、前記第1のシール性の評価において、前記到達圧力が第1の閾値以下、且つ、前記第2の到達圧力が第3の閾値以下のときに、前記第1のシール性が良好と判断し、前記到達圧力が前記第1の閾値より大きいか、又は、前記第2の到達圧力が前記第3の閾値より大きいときに、前記第1のシール性が不良と判断する、鋳造装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280025656.1A CN117098619A (zh) | 2021-03-30 | 2022-02-28 | 铸造模具的检查方法和铸造装置 |
US18/284,557 US20240157434A1 (en) | 2021-03-30 | 2022-02-28 | Casting die inspection method and casting device |
JP2023510683A JPWO2022209504A1 (ja) | 2021-03-30 | 2022-02-28 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021057166 | 2021-03-30 | ||
JP2021-057166 | 2021-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022209504A1 true WO2022209504A1 (ja) | 2022-10-06 |
Family
ID=83458484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/008129 WO2022209504A1 (ja) | 2021-03-30 | 2022-02-28 | 鋳造金型の検査方法および鋳造装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240157434A1 (ja) |
JP (1) | JPWO2022209504A1 (ja) |
CN (1) | CN117098619A (ja) |
WO (1) | WO2022209504A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53137119U (ja) * | 1977-04-04 | 1978-10-30 | ||
JPH02160155A (ja) * | 1988-12-12 | 1990-06-20 | Nippondenso Co Ltd | 真空鋳造方法および装置 |
JPH0615429A (ja) * | 1992-04-27 | 1994-01-25 | Outboard Marine Corp | 真空ダイカスト法 |
JPH1034309A (ja) * | 1996-07-22 | 1998-02-10 | Toshiba Mach Co Ltd | ダイカスト金型キャビティの圧力監視装置 |
JP2004243327A (ja) * | 2003-02-10 | 2004-09-02 | Ryobi Ltd | 真空ダイカスト用金型のシール性確認方法 |
JP2014140878A (ja) * | 2013-01-25 | 2014-08-07 | Honda Motor Co Ltd | 鋳造用金型 |
-
2022
- 2022-02-28 WO PCT/JP2022/008129 patent/WO2022209504A1/ja active Application Filing
- 2022-02-28 JP JP2023510683A patent/JPWO2022209504A1/ja active Pending
- 2022-02-28 CN CN202280025656.1A patent/CN117098619A/zh active Pending
- 2022-02-28 US US18/284,557 patent/US20240157434A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53137119U (ja) * | 1977-04-04 | 1978-10-30 | ||
JPH02160155A (ja) * | 1988-12-12 | 1990-06-20 | Nippondenso Co Ltd | 真空鋳造方法および装置 |
JPH0615429A (ja) * | 1992-04-27 | 1994-01-25 | Outboard Marine Corp | 真空ダイカスト法 |
JPH1034309A (ja) * | 1996-07-22 | 1998-02-10 | Toshiba Mach Co Ltd | ダイカスト金型キャビティの圧力監視装置 |
JP2004243327A (ja) * | 2003-02-10 | 2004-09-02 | Ryobi Ltd | 真空ダイカスト用金型のシール性確認方法 |
JP2014140878A (ja) * | 2013-01-25 | 2014-08-07 | Honda Motor Co Ltd | 鋳造用金型 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2022209504A1 (ja) | 2022-10-06 |
CN117098619A (zh) | 2023-11-21 |
US20240157434A1 (en) | 2024-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11638951B2 (en) | Heating method for casting mold, and casting device | |
CN213600348U (zh) | 板状况工具及其成套部件 | |
US10307820B2 (en) | Suction pressure casting method | |
WO2022209504A1 (ja) | 鋳造金型の検査方法および鋳造装置 | |
CN116748492A (zh) | 压铸机及装配于压铸机的模具的气密检查方法 | |
US5219409A (en) | Vacuum die casting process | |
CN111615434B (zh) | 压铸用铸造模具及其减压通道流导设定方法 | |
TW201708801A (zh) | 氦氣洩漏探測器 | |
JP3983479B2 (ja) | 電池の液漏れ検査装置 | |
JP5570309B2 (ja) | ガスアシスト射出成形用金型装置と成形品の製造方法 | |
US20220314310A1 (en) | Inspection method for casting mold, and casting device | |
JP5006808B2 (ja) | 射出成形用金型装置 | |
JP2007222896A (ja) | キャビティ湿度計測方法およびダイカスト装置 | |
JP2006315022A (ja) | 型内雰囲気測定装置及び型内雰囲気測定方法 | |
JP3898545B2 (ja) | 鋳造方法、及びこれに用いる鋳造装置 | |
JPH0768365A (ja) | 真空ダイカストにおけるキャビティ湿度計測方法及び真空ダイカストにおける品質管理方法 | |
US10656038B2 (en) | Apparatus, system, and method for use in fluid filling apparatus inspection | |
JP4966911B2 (ja) | 減圧鋳造装置 | |
US20210308749A1 (en) | Degassing device and degassing method for die-casting device | |
JP2003021570A (ja) | 漏れ計測方法 | |
JPH09260409A (ja) | 半導体樹脂封止装置 | |
JP2006110561A (ja) | ダイカスト鋳造法 | |
JP2006181626A (ja) | 真空ダイカスト法及び真空ダイカスト装置 | |
JP2012110955A (ja) | ダイカスト金型のキャビティ内圧力管理装置および管理方法 | |
JP2002267567A (ja) | リークテスト方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22779729 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2023510683 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280025656.1 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18284557 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22779729 Country of ref document: EP Kind code of ref document: A1 |