CN105562658A - Ultrasonic-assisted squeeze casting forming device and method - Google Patents
Ultrasonic-assisted squeeze casting forming device and method Download PDFInfo
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- CN105562658A CN105562658A CN201610131203.3A CN201610131203A CN105562658A CN 105562658 A CN105562658 A CN 105562658A CN 201610131203 A CN201610131203 A CN 201610131203A CN 105562658 A CN105562658 A CN 105562658A
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- 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
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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Abstract
The invention discloses an ultrasonic-assisted squeeze casting forming device and method. The ultrasonic-assisted squeeze casting forming device structurally comprises a feeding cavity plate, an ultrasonic machine, a concave die, a lower pressing head and a squeezing piston, wherein an ejection rod is inserted in the middle of the concave die; the feeding cavity plate is arranged at the lower end of the concave die; a feeding cavity is formed in the middle of the feeding cavity plate; the lower pressing head is arranged at the lower end of the feeding cavity, and the lower end of the lower pressing head is connected with the ultrasonic machine; the lower end of the lower pressing head and the upper end of the ultrasonic machine are both installed on a fixing plate; the two ends of the fixing plate are connected with thrusting barrels arranged under the two ends correspondingly; the lower ends of the thrusting barrels are fixed to a pushing plate; the squeezing piston is arranged in the middle of the lower end of the pushing plate; the ultrasonic machine is located in a cavity formed by the fixing plate, the trusting barrels and the pushing plate. By means of the ultrasonic-assisted squeeze casting forming device and method, the uniformity of the structure of a casting can be improved, crystalline particles are refined, and therefore the mechanical performance of the casting is improved. In addition, the structure is simple, operation is convenient, production efficiency is high, and castings of different complex shapes can be cast.
Description
Technical field
The present invention relates to a kind of casting device and method, particularly relate to a kind of ultrasonic wave added extrusion casting and forming device and method.
Background technology
Extrusion casint is also known as liquid forging, make molten metal or semi-solid alloy, direct injection chunk, close die subsequently, to produce filling flow, arrive product outer shape, then high-pressure, make the metal (shell) solidified produce plastic deformation, isostatic pressed is born in non-frozen metal, there is High Pressure Solidification simultaneously, finally obtain the method for product or blank.Casting device existing on the market, all not containing ultrasonic wave added device, has structure and complicated operation, the difficult forming of product, the product rustic cast out and mechanical property shortcoming not up to standard.
Summary of the invention
In order to solve the weak point existing for above-mentioned technology, the invention provides a kind of ultrasonic wave added extrusion casting and forming device and method.
In order to solve above technical problem, the technical solution used in the present invention is: a kind of ultrasonic wave added extrusion casting and forming device, and comprise reinforced chamber plate, it also comprises ultrasonic device, die, push-down head, extrusion piston; The centre of die is plugged with push rod; The lower end of die is provided with reinforced chamber plate; The centre of reinforced chamber plate has set reinforced chamber; The lower end in reinforced chamber is provided with push-down head;
The lower end of push-down head is connected with ultrasonic device; The lower end of push-down head, the upper end of ultrasonic device are installed on fixed head; The two ends of fixed head are connected with the thrust cylinder be arranged at below two ends respectively; The lower end of thrust cylinder is all fixed in push pedal; Extrusion piston is provided with in the middle of the lower end of push pedal;
Ultrasonic device is positioned at the cavity that fixed head, thrust cylinder and push pedal are formed; The lower end of ultrasonic device is connected with the controller of external source by electric wire.
The top of ultrasonic device is provided with one piece of transverse slat, and the two ends of transverse slat are all fixed on fixed head by a screw.A screw is all equipped with spring part; Spring part is all positioned at the lower end of transverse slat.
The lower end of push-down head is fixed on fixed head by multiple No. two screws; Upper end, the lower end of thrust cylinder are fastenedly connected respectively by No. three screws and fixed head, push pedal.
A kind of ultrasonic wave added squeeze cast form method comprises the following steps:
A, preheated mold: start shooting and carry out preheating to die, preheat temperature is 200 DEG C, and the preheating insulation time is 1h;
B, casting semi solid slurry: first at 720-750 DEG C, alloy or composite are smelted into liquid state; Open die, melted liquid alloy or composite are poured in reinforced chamber, namely liquid alloy or composite start crystallization along surface, reinforced chamber; The operating frequency arranging ultrasonic device is start ultrasonic device after 20-25KHz; Push-down head and ultrasonic device produce and resonate thus liquid alloy or composite are vibrated, and make the crystal breakage fragmentation grown form semi-solid alloy or composite;
The condensation of c, product is shaping: start extrusion piston, make it promote shift-in on thrust cylinder and promote push-down head moves, and ensures that the rate of climb of push-down head is 20-30mm/s; The upper end above-mentioned push-down head (5) being risen to reinforced chamber plate makes semi-solid alloy or composite be full of groove in die, and pressurize 10-20s is to semi-solid alloy or the complete coagulation forming of composite;
D, taking-up product: after product is shaping, opens die and promote push rod downwards, product is come off in groove;
E, equipment post processing: take out product, the lubricant of the upper protection of spraying again after die and reinforced chamber are cleared up; Start extrusion piston, make it drive push-down head to come downwards to assigned address;
F, cycling: refill reinforced chamber by after alloy or composite melting, carry out the forming operation of next product.
The present invention can improve the uniformity and crystallization of refinement particle of casting product tissue, thus improves the mechanical property of product; In addition, structure of the present invention is simple, easy to operate, production efficiency is high, and can cast out the different products with complicated shape.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
In figure: 1, push rod; 2, die; 3, reinforced chamber plate; 4, reinforced chamber; 5, push-down head; 6, fixed head; 7, spring part; 8, thrust cylinder; 9, ultrasonic device; 10, push pedal; 11, extrusion piston.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As shown in Figure 1, structure of the present invention comprises reinforced chamber plate 3, also comprises ultrasonic device 9, die 2, push-down head 5, extrusion piston 11; The centre of die 2 is plugged with push rod 1; The lower end of die 2 is provided with reinforced chamber plate 3, and the bottom of die 2 is provided with the groove for formed product; The centre of reinforced chamber plate 3 has set reinforced chamber 4; The lower end in reinforced chamber 4 is provided with push-down head 5; Be recessed bond ing between the reinforced chamber plate 3 at push-down head 5 and its two ends, push-down head 5 can be moved up and down relative to reinforced chamber plate 3;
The lower end of push-down head 5 is connected with ultrasonic device 9; The lower end of push-down head 5, the upper end of ultrasonic device 9 are installed on fixed head 6; The two ends of fixed head 6 are connected with the thrust cylinder 8 be arranged at below two ends respectively; The lower end of thrust cylinder 8 is all fixed in push pedal 10; Extrusion piston 11 is provided with in the middle of the lower end of push pedal 10;
Ultrasonic device 9 is positioned at the cavity that fixed head 6, thrust cylinder 8 and push pedal 10 are formed; The lower end of ultrasonic device 9 is connected with the controller of external source by electric wire; Outer source controller can control the start and stop of ultrasonic device 9.
The top of ultrasonic device 9 is provided with one piece of transverse slat, and the two ends of transverse slat are all fixed on fixed head 6 by a screw.A screw is all equipped with spring part 7; Spring part 7 is all positioned at the lower end of transverse slat; Spring part 7 can cushion extruding force that ultrasonic device 9 is subject to when moving up and down and protect it from damage.
The lower end of push-down head 5 is fixed on fixed head 6 by multiple No. two screws; The way of contact between No. two screws and fixed head 6, push-down head 5 is recessed bond ing, can protect like this push-down head 5 move up and down be squeezed time from damage; Upper end, the lower end of thrust cylinder 8 are fastenedly connected respectively by No. three screws and fixed head 6, push pedal 10.
A kind of step of ultrasonic wave added squeeze cast form method comprises:
A, preheated mold: start shooting and carry out preheating to die 2, preheat temperature is 200 DEG C, and the preheating insulation time is 1h;
B, casting semi solid slurry: first at 720-750 DEG C, alloy or composite are smelted into liquid state; Open die 2, melted liquid alloy or composite are poured in reinforced chamber 4, namely liquid alloy or composite start crystallization along surface, reinforced chamber 4; The operating frequency arranging ultrasonic device 9 is start ultrasonic device 9 after 20-25KHz; Push-down head 5 and ultrasonic device 9 produce and resonate thus liquid alloy or composite are vibrated, make the crystal breakage fragmentation grown, simultaneously, ultrasonic vibration causes liquid alloy or composite strong agitation, its cooling velocity improved and produces stronger temperature fluctuation, thus forming semi-solid alloy or composite;
The condensation of c, product is shaping: start extrusion piston 11, make it promote shift-in on thrust cylinder 8 and promote push-down head 5 moves, and ensures that the rate of climb of push-down head 5 is 20-30mm/s; Upper end push-down head 5 being risen to reinforced chamber plate 3 makes semi-solid alloy or composite be full of groove in die 2, and pressurize 10-20s is to semi-solid alloy or the complete coagulation forming of composite;
D, taking-up product: after product is shaping, open die 2 and promote push rod 1 downwards, product is come off in groove;
E, equipment post processing: take out product, the lubricant of the upper protection of spraying again after die 2 and reinforced chamber 4 are cleared up; Start extrusion piston 11, make it drive push-down head 5 to come downwards to assigned address;
F, cycling: refill reinforced chamber 4 by after alloy or composite melting, carry out the forming operation of next product.
The material that the present invention is suitable for is liquid alloy or composite, is particularly useful for ZL205A aluminium alloy, SiCp/7075Al composite, WE43 magnesium alloy or SiCp/WE43Mg composite.
Below by following examples, method of operating of the present invention is further elaborated:
The ultrasonic wave added squeeze cast form method of embodiment one: ZL205A aluminium alloy comprises the following steps:
A, preheated mold: start shooting and carry out preheating to die 2, preheat temperature is 200 DEG C, and the preheating insulation time is 1h;
B, casting semi solid slurry: at 750 DEG C, ZL205A aluminium alloy smelting is become liquid; Open die 2, be poured into by melted liquid state ZL205A aluminum alloy in reinforced chamber 4, namely liquid state ZL205A aluminum alloy starts crystallization along surface, reinforced chamber 4; The operating frequency arranging ultrasonic device 9 is start ultrasonic device 9 after 20KHz; Push-down head 5 and ultrasonic device 9 produce and resonate thus liquid state ZL205A aluminum alloy is vibrated, and make the crystal breakage fragmentation grown form semisolid ZL205A aluminium alloy;
The condensation of c, product is shaping: start extrusion piston 11, make it promote shift-in on thrust cylinder 8 and promote push-down head 5 moves, and ensures that the rate of climb of push-down head 5 is 20mm/s; Upper end push-down head 5 being risen to reinforced chamber plate 3 makes semisolid ZL205A aluminium alloy be full of groove in die 2, and the complete coagulation forming of pressurize 10s to semisolid ZL205A aluminium alloy;
D, taking-up product: after product is shaping, open die 2 and promote push rod 1 downwards, product is come off in groove;
E, equipment post processing: take out product, the lubricant of the upper protection of spraying again after die 2 and reinforced chamber 4 are cleared up; Start extrusion piston 11, make it drive push-down head 5 to come downwards to assigned address;
F, cycling: by refilling reinforced chamber 4 after ZL205A aluminium alloy smelting, carry out the forming operation of next product.
The ultrasonic wave added squeeze cast form method of embodiment two: SiCp/7075Al composite comprises the following steps:
A, preheated mold: start shooting and carry out preheating to die 2, preheat temperature is 200 DEG C, and the preheating insulation time is 1h;
B, casting semi solid slurry: at 750 DEG C, SiCp/7075Al composite is smelted into liquid state; Open die 2, be poured into by melted liquid Si Cp/7075Al composite in reinforced chamber 4, namely liquid Si Cp/7075Al composite starts crystallization along surface, reinforced chamber 4; The operating frequency arranging ultrasonic device 9 is start ultrasonic device 9 after 25KHz; Push-down head 5 and ultrasonic device 9 produce and resonate thus liquid Si Cp/7075Al composite is vibrated, and make the crystal breakage fragmentation grown form semisolid SiCp/7075Al composite;
The condensation of c, product is shaping: start extrusion piston 11, make it promote shift-in on thrust cylinder 8 and promote push-down head 5 moves, and ensures that the rate of climb of push-down head 5 is 30mm/s; Upper end push-down head 5 being risen to reinforced chamber plate 3 makes semisolid SiCp/7075Al composite be full of groove in die 2, and the complete coagulation forming of pressurize 20s to semisolid SiCp/7075Al composite;
D, taking-up product: after product is shaping, open die 2 and promote push rod 1 downwards, product is come off in groove;
E, equipment post processing: take out product, the lubricant of the upper protection of spraying again after die 2 and reinforced chamber 4 are cleared up; Start extrusion piston 11, make it drive push-down head 5 to come downwards to assigned address;
F, cycling: refill reinforced chamber 4 by after the melting of SiCp/7075Al composite, carry out the forming operation of next product.
The ultrasonic wave added squeeze cast form method of embodiment three: WE43 magnesium alloy comprises the following steps:
A, preheated mold: start shooting and carry out preheating to die 2, preheat temperature is 200 DEG C, and the preheating insulation time is 1h;
B, casting semi solid slurry: at 720 DEG C, WE43 magnesium alloy smelting is become liquid; Open die 2, by melted liquid WE43 magnesium alloy pouring in reinforced chamber 4, namely liquid WE43 magnesium alloy starts crystallization along surface, reinforced chamber 4; The operating frequency arranging ultrasonic device 9 is start ultrasonic device 9 after 20KHz; Push-down head 5 and ultrasonic device 9 produce and resonate thus liquid WE43 magnesium alloy is vibrated, and make the crystal breakage fragmentation grown form semisolid WE43 magnesium alloy;
The condensation of c, product is shaping: start extrusion piston 11, make it promote shift-in on thrust cylinder 8 and promote push-down head 5 moves, and ensures that the rate of climb of push-down head 5 is 20mm/s; Upper end push-down head 5 being risen to reinforced chamber plate 3 makes semisolid WE43 magnesium alloy be full of groove in die 2, and the complete coagulation forming of pressurize 10s to semisolid WE43 magnesium alloy;
D, taking-up product: after product is shaping, open die 2 and promote push rod 1 downwards, product is come off in groove;
E, equipment post processing: take out product, the lubricant of the upper protection of spraying again after die 2 and reinforced chamber 4 are cleared up; Start extrusion piston 11, make it drive push-down head 5 to come downwards to assigned address;
F, cycling: by refilling reinforced chamber 4 after WE43 magnesium alloy smelting, carry out the forming operation of next product.
The ultrasonic wave added squeeze cast form method of embodiment four: SiCp/WE43Mg composite comprises the following steps:
A, preheated mold: start shooting and carry out preheating to die 2, preheat temperature is 200 DEG C, and the preheating insulation time is 1h;
B, casting semi solid slurry: at 720 DEG C, SiCp/WE43Mg composite is smelted into liquid state; Open die 2, be poured into by melted liquid Si Cp/WE43Mg composite in reinforced chamber 4, namely liquid Si Cp/WE43Mg composite starts crystallization along surface, reinforced chamber 4; The operating frequency arranging ultrasonic device 9 is start ultrasonic device 9 after 25KHz; Push-down head 5 and ultrasonic device 9 produce and resonate thus liquid Si Cp/WE43Mg composite is vibrated, and make the crystal breakage fragmentation grown form semisolid SiCp/WE43Mg composite;
The condensation of c, product is shaping: start extrusion piston 11, make it promote shift-in on thrust cylinder 8 and promote push-down head 5 moves, and ensures that the rate of climb of push-down head 5 is 30mm/s; Upper end push-down head 5 being risen to reinforced chamber plate 3 makes semisolid SiCp/WE43Mg composite be full of groove in die 2, and the complete coagulation forming of pressurize 20s to semisolid SiCp/WE43Mg composite;
D, taking-up product: after product is shaping, open die 2 and promote push rod 1 downwards, product is come off in groove;
E, equipment post processing: take out product, the lubricant of the upper protection of spraying again after die 2 and reinforced chamber 4 are cleared up; Start extrusion piston 11, make it drive push-down head 5 to come downwards to assigned address;
F, cycling: refill reinforced chamber 4 by after the melting of SiCp/WE43Mg composite, carry out the forming operation of next product.
The present invention adopts the technique of ultrasonic device assisted casting, can improve the uniformity and crystallization of refinement particle of casting product tissue, thus improve the mechanical property of product; In addition, structure of the present invention is simple, easy to operate, production efficiency is high, and can cast out the different products with complicated shape by changing die.
Above-mentioned embodiment is not limitation of the present invention; the present invention is also not limited in above-mentioned citing; the change that those skilled in the art make within the scope of technical scheme of the present invention, remodeling, interpolation or replacement, also all belong to protection scope of the present invention.
Claims (5)
1. a ultrasonic wave added extrusion casting and forming device, comprises reinforced chamber plate (3), it is characterized in that: it also comprises ultrasonic device (9), die (2), push-down head (5), extrusion piston (11); The centre of described die (2) is plugged with push rod (1); The lower end of die (2) is provided with reinforced chamber plate (3); The centre of described reinforced chamber plate (3) has set reinforced chamber (4); The lower end of described reinforced chamber (4) is provided with push-down head (5);
The lower end of described push-down head (5) is connected with ultrasonic device (9); The lower end of described push-down head (5), the upper end of ultrasonic device (9) are installed on fixed head (6); The two ends of described fixed head (6) are connected with the thrust cylinder (8) be arranged at below two ends respectively; The lower end of described thrust cylinder (8) is all fixed in push pedal (10); Extrusion piston (11) is provided with in the middle of the lower end of described push pedal (10);
Described ultrasonic device (9) is positioned at the cavity that fixed head (6), thrust cylinder (8) and push pedal (10) are formed; The lower end of ultrasonic device (9) is connected with the controller of external source by electric wire.
2. ultrasonic wave added extrusion casting and forming device according to claim 1, is characterized in that: the top of described ultrasonic device (9) is provided with one piece of transverse slat, and the two ends of transverse slat are all fixed on fixed head (6) by a screw.
3. ultrasonic wave added extrusion casting and forming device according to claim 2, is characterized in that: a described screw is all equipped with spring part (7); Described spring part (7) is all positioned at the lower end of transverse slat.
4. ultrasonic wave added extrusion casting and forming device according to claim 1, is characterized in that: the lower end of described push-down head (5) is fixed on fixed head (6) by multiple No. two screws; Upper end, the lower end of described thrust cylinder (8) are fastenedly connected respectively by No. three screws and fixed head (6), push pedal (10).
5. a ultrasonic wave added squeeze cast form method, is characterized in that: said method comprising the steps of:
A, preheated mold: start shooting and carry out preheating to die (2), preheat temperature is 200 DEG C, and the preheating insulation time is 1h;
B, casting semi solid slurry: first at 720-750 DEG C, alloy or composite are smelted into liquid state; Open die (2), melted liquid alloy or composite are poured in reinforced chamber (4), namely liquid alloy or composite start crystallization along reinforced chamber (4) surface; The operating frequency arranging ultrasonic device (9) is start ultrasonic device (9) after 20-25KHz; Described push-down head (5) and ultrasonic device (9) produce and resonate thus liquid alloy or composite are vibrated, and make the crystal breakage fragmentation grown form semi-solid alloy or composite;
The condensation of c, product is shaping: start extrusion piston (11), makes it promote the upper shift-in of thrust cylinder (8) and promote push-down head (5) moves, ensures that the rate of climb of push-down head (5) is 20-30mm/s; The upper end above-mentioned push-down head (5) being risen to reinforced chamber plate (3) makes semi-solid alloy or composite be full of groove in die (2), and pressurize 10-20s is to semi-solid alloy or the complete coagulation forming of composite;
D, taking-up product: after product is shaping, opens die (2) and promote push rod (1) downwards, product is come off in groove;
E, equipment post processing: take out product, the lubricant of the upper protection of spraying again after die (2) and reinforced chamber (4) are cleared up; Start extrusion piston (11), make it drive push-down head (5) to come downwards to assigned address;
F, cycling: refill reinforced chamber (4) by after alloy or composite melting, carry out the forming operation of next product.
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