CN107824752B - Device for preparing metal semi-solid slurry - Google Patents

Abstract

A device for preparing metal semi-solid slurry belongs to the technical field of metal semi-solid processing, and comprises: safety shield, rotating assembly, processing subassembly, mount pad, curb plate, discharge opening, feed hopper, motor, mode locking device, receiving subassembly, the whole motion process of device is controlled by automatically controlled element. The reciprocating pressure provided by the pistons at two sides of the semi-solid slurry transfer device can promote the semi-solid slurry to be repeatedly and severely sheared in the transfer process between the chambers, so that the grain refining effect is greatly improved, and all the slurry is transferred between the chambers as much as possible, so that the uniformity of slurry treatment is ensured. The metal semi-solid slurry prepared by the preparation device has fine crystal grains, uniform distribution and less gas content. Meanwhile, the preparation device is simple in structure and convenient to operate and control, and is particularly suitable for preparing various light alloy semi-solid slurry.

Description

A device for preparing metal semi-solid slurry

Technical field

The invention discloses a device for preparing metal semi-solid slurry, which belongs to a kind of metal semi-solid processing equipment.

Background technique

Metal semi-solid forming technology is recognized as the most promising near-net forming technology for light alloys in the 21st century. Its purpose is to change the dendrite structure morphology naturally formed in the liquid metal forming process to improve the comprehensive mechanical properties of metal parts. . There are two major types of metal semi-solid processing: thixoforming and rheoforming. However, due to the three typical shortcomings of thixoforming technology: high production cost, difficulty in forming complex parts, and difficulty in controlling the production process, rheology Shape technology is increasingly favored by the industry. At present, the commonly used methods for preparing metal semi-solid rheoforming slurry mainly include mechanical stirring method, electromagnetic stirring method, double spiral stirring method, vibration method, single roller rotation method, spray deposition method, inclined cooling plate method, and rotating conveying. Tube method, turbulence effect method, liquid mixing method, etc. However, since these processes are open low-pressure processing methods, there are common shortcomings such as insufficient slurry grain size, uneven processing quality, and easy air entrainment.

Contents of the invention

The object of the present invention is to provide a metal semi-solid slurry preparation device that refines the crystal grains of metal semi-solid slurry and improves the uniformity and efficiency of slurry processing.

The present invention is achieved through the following technical solutions.

The device for preparing metal semi-solid slurry according to the invention includes: a safety baffle (1), a rotating component (2), a processing component (3), a mounting base (4), a side plate (5), and a fixed mold. (7), movable mold (10), clamping assembly (15), material receiving assembly (23); the safety baffle (1) is movable hinged with the mounting base (4) through the rotating assembly (2), and the fixed mold (7) ) is fixed on the mounting base (4) and the side plate. The side plate and the mounting base are welded together. The movable mold (10) is connected to the side plate through the mold clamping assembly (15). One end of the processing assembly (3) is fixed on On the mounting base, one end passes through the piston A (9) and the piston B (24) to process the semi-solid slurry in the space between the fixed mold (7) and the movable mold (10). The mounting base (4) and the material receiving The components (23) are welded together top and bottom. The movement process of the entire device is controlled by electronic control components.

The rotating assembly (2) of the present invention includes: a sleeve (25), a fixed shaft (26), a motor (13), a gear A (12), a gear B (14), and a gear A (12) installed at the end of the fixed shaft. , Gear B (14). The fixed shaft (26) and the electric motor (13) are meshed together through gears, and the fixed shaft (26) and the sleeve (25) are movably hinged together.

The material receiving assembly (23) of the present invention includes: a base (18), a material receiving trough (19), a material conveying platform (20), a hydraulic cylinder E (21), and a slide (22). The conveying platform (20) is installed on the base (18) through the slide (22). One end of the hydraulic cylinder E (21) is fixed on the side plate of the base (18), and the other end is connected to the side of the conveying platform (20). . The slurry is transported through the expansion and contraction of the hydraulic cylinder E (21).

The processing assembly (3) of the present invention includes: hydraulic cylinder A (11), hydraulic cylinder B (27), piston A (9), piston B (24), fixed mold (7), and movable mold (10) . The fixed mold (7) and the movable mold (10) are provided with installation holes for heating elements and temperature measuring elements, and are wrapped with insulation material. The fixed mold (7) and the movable mold (10) are closed to form two material cylinders A (28). , material cylinder B (30), the two material cylinders are connected by a thin tube (29) in the middle, the hydraulic cylinder A (11) and the hydraulic cylinder B (27) are arranged symmetrically left and right, the hydraulic cylinder pushes the piston to move left and right in the material cylinder, so that The semi-solid metal slurry is completely reciprocated through the thin tube (29) between the material cylinder A (28) and the material cylinder B (30). During the reciprocating transfer process, the metal slurry is subjected to severe shearing and is finely divided. Chemical grains.

The mold clamping device (15) of the present invention is composed of a hydraulic cylinder C (16) and a hydraulic cylinder D (17). The two ends of the two hydraulic cylinders are connected to the side plate (5) and the movable mold (10) respectively. At the same time, the expansion and contraction of the hydraulic cylinder drives the movable mold (10) to move, realizing the mold opening and mold locking process.

The fixed mold (7) and the movable mold (10) of the present invention are made of H13 steel, with heating elements and temperature measuring elements embedded inside. The outer layer is wrapped with insulation material, and the mold closing surface is provided with positioning pins (31) and positioning pins. holes to ensure accurate alignment during the mold closing process.

The working process of the semi-solid metal slurry preparation device according to the present invention is divided into a processing process and a discharging process.

Processing process: First, start the heating device in the mold closing state to heat the fixed mold (7) and the movable mold (10) to the preset temperature and keep them warm through the temperature control element. Control the motor (13) to open the safety baffle (1), check whether the movable mold and the fixed mold are tightly fitted. After they are tightly fitted, control the hydraulic cylinder A (11) and hydraulic cylinder B (27) to make the piston A (9) and piston B (24) are moved to the leftmost side of the material cylinder A (28) and the material cylinder B (30) respectively, and the smelted metal liquid is fed through when it is 30-50°C above the liquidus temperature. Pour the funnel (8) into the material tank A (28). Immediately, hydraulic cylinder A (11) moves piston A (9) to the right. At this time, hydraulic cylinder B (27) is in a pressure relief state, and piston B (24) moves to the right under the thrust of the molten metal. When the left piston When A (9) moves to the rightmost edge of the material cylinder A (28), the molten metal is almost completely pushed to the material cylinder B (30), and the right hydraulic cylinder B (27) then pushes the metal through the piston B (24) The liquid flows back to the material cylinder A (28), and the reciprocating cycle lasts for about 5-10 rounds, and the metal semi-solid slurry is produced. The entire movement process of the hydraulic cylinder is controlled by electronic control components. The metal semi-solid slurry produced through such reciprocating severe shearing has finer grains, a more uniform structure and less gas content.

Unloading process: Place the material receiving chute (19) on the feeding table (20), and the hydraulic cylinder E (21) moves the material receiving chute (19) to the material receiving position. Once the metal semi-solid slurry is processed, the motor (13) will turn the safety baffle (1) to the vertical downward position (as shown in Figure 5) to prevent the slurry from splashing and injuring people during the unloading process. At the same time, the hydraulic cylinder C (16), hydraulic cylinder D (17) moves the movable mold (10) away, and the slurry flows into the material receiving trough (19) through the discharge port (6). After unloading is completed, the electric motor (13) raises the safety baffle, and the hydraulic cylinder E (21) sends out the metal semi-solid slurry for subsequent use.

beneficial effects of the present invention.

(1) This device uses the reciprocating pressure provided by pistons on both sides to cause repeated and severe shearing of the semi-solid slurry during the transfer process between chambers, greatly improving the grain refinement effect.

(2) When this device prepares metal semi-solid slurry, almost all the slurry participates in the transfer between chambers, ensuring the uniformity of slurry processing.

(3) The preparation process of this device is carried out in a relatively closed chamber, which is not easy to entrain air, and the slurry contains little air.

(4) The device has a simple structure, and the entire action can be controlled electronically, realizing process automation, including automatic transfer of slurry and control of the safety baffle.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the device.

Figure 2 is a schematic diagram of the material receiving component.

Figure 3 is a schematic diagram of the upper assembly.

Figure 4 is a schematic diagram of the working status of the device.

Figure 5 is a schematic diagram of the unloading state.

The serial numbers in the figures: 1 is the safety baffle; 2 is the rotating component; 3 is the processing component; 4 is the mounting base; 5 is the side plate; 6 is the discharge port; 7 is the fixed mold; 8 is the feeding funnel; 9 is Piston A; 10 is the movable mold; 11 is the hydraulic cylinder A; 12 is the gear A, 14 is the gear B; 13 is the electric motor; 15 is the clamping device; 16 is the hydraulic cylinder C; 17 is the hydraulic cylinder D; 18 is the base; 19 is the material receiving trough; 20 is the feeding table; 21 is the hydraulic cylinder E; 22 is the slide; 23 is the material receiving component; 24 is the piston B; 25 is the casing; 26 is the fixed shaft; 27 is the hydraulic cylinder B; 28 is the material cylinder A; 29 is the thin tube; 30 is the material cylinder B; 31 is the positioning pin; 32 is the heating and temperature measuring element hole.

Detailed ways

The present invention will be further illustrated by the following examples in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, the metal semi-solid slurry preparation device provided by the present invention includes: a safety baffle 1, a rotating component 2, a processing component 3, a mounting base 4, a side plate 5, a fixed mold 7, a moving Mold 10, mold clamping device 15, material receiving component 23. The entire movement process of the device is controlled by electronic control components.

The processing assembly 3 is mainly composed of a hydraulic cylinder A11, a hydraulic cylinder B27, a piston A9, a piston B24, a fixed mold 7 and a movable mold 10. The fixed mold 7 and the movable mold 10 are provided with installation holes for heating and temperature measuring elements. The outer layer is wrapped with insulation material. The heating device heats the fixed mold 7 and the movable mold 10. The temperature control element keeps the temperature of the device constant during the processing. The temperature required by the process is consistent. The fixed mold 7 and the movable mold 10 are closed to form two material cylinders A28 and B30. The two material cylinders are connected through a thin tube 29 in the middle. The hydraulic cylinders A11 and B27 are symmetrically arranged left and right. The hydraulic cylinder pushes the piston left and right in the material cylinder. Move, the semi-solid metal slurry is completely reciprocated between the material cylinder A28 and the material cylinder B30 through the thin tube 29. During the reciprocating transfer process, the metal slurry is subjected to severe shearing to refine the grains.

The rotating assembly 2 includes: a sleeve 25, a fixed shaft 26, a motor 13, a gear A12, a gear B14. The end of the fixed shaft is equipped with gear A12 and gear B14. The fixed shaft 26 and the motor 13 are meshed together through gears, and the fixed shaft 26 and the sleeve 25 are hingedly connected together.

The material receiving assembly 23 includes: a base 18, a material receiving trough 19, a material conveying platform 20, a hydraulic cylinder E21, and a slide 22. The conveying platform 20 is installed on the base 18 through the slideway 22. One end of the hydraulic cylinder E21 is fixed on the side plate of the base, and the other end is connected to the side of the conveying platform 20. Through the expansion and contraction of the hydraulic cylinder, the slurry is transported.

The mold clamping device 15 is composed of a hydraulic drive cylinder C16 and a hydraulic cylinder D17. Both ends of the hydraulic cylinder are connected with the side plate and the movable mold 10 respectively. The expansion and contraction of the hydraulic cylinder drives the movable mold to move, realizing mold opening and mold locking. process.

The working process of this semi-solid metal slurry preparation device is divided into a processing process and a discharging process.

Processing process: First, start the heating device in the mold closing state to heat the fixed mold 7 and the movable mold 10 to the preset temperature and keep them warm through the temperature control element. Control the motor 13 to open the safety baffle 1, and check whether the movable mold and the fixed mold are tight. After they are tight, control the hydraulic cylinder A11 and the hydraulic cylinder B27 to move the pistons A9 and B24 to the material cylinders A28 and 24 respectively. On the far left side of the material tank B30, the smelted molten metal is poured into the material tank A28 through the feed funnel 8 when the temperature is 30-50°C above the liquidus temperature. Immediately, the hydraulic cylinder A11 moves the piston A9 to the right. At this time, the hydraulic cylinder B27 is in a pressure relief state. The piston B24 moves to the right under the thrust of the molten metal. When the left piston A9 moves to the rightmost edge of the material cylinder A28, The molten metal is almost completely pushed to the material tank B30, and the right hydraulic cylinder B27 then pushes the metal liquid back to the material tank A28 through the piston B24. This reciprocating cycle lasts for about 5-10 rounds, and a metal semi-solid slurry is produced. The entire movement process of the hydraulic cylinder is controlled by electronic control components. The metal semi-solid slurry produced through such reciprocating severe shearing has finer grains, a more uniform structure and less gas content.

Unloading process: Place the material receiving chute 19 on the feeding platform 20, and the hydraulic cylinder E21 moves the material receiving chute 19 to the material receiving position. Once the metal semi-solid slurry is processed, the motor 13 will turn the safety baffle 1 to the vertical downward position as shown in Figure 5 to prevent the slurry from splashing and hurting people during the unloading process. At the same time, the hydraulic cylinder C16 and the hydraulic cylinder D17 will move The mold 10 is removed, and the slurry flows into the material receiving tank 19 through the discharge port 6. After unloading is completed, the electric motor 13 raises the safety baffle, and the hydraulic cylinder E21 sends out the metal semi-solid slurry for subsequent use.

Claims (1)

1. The device for preparing the metal semi-solid slurry is characterized by comprising a safety baffle (1), a rotating assembly (2), a processing assembly (3), a mounting seat (4), a side plate (5), a fixed mold (7), a movable mold (10), a mold locking assembly (15) and a receiving assembly (23); the safety baffle (1) is movably hinged with the mounting seat (4) through the rotating assembly (2), the fixed mould (7) is fixed on the mounting seat (4) and the side plate, the side plate is welded with the mounting seat, the movable mould (10) is connected with the side plate through the mould locking assembly (15), one end of the processing assembly (3) is fixed on the mounting seat, one end of the processing assembly is used for processing semi-solid slurry in a space between the fixed mould (7) and the movable mould (10) through the piston A (9) and the piston B (24), the mounting seat (4) and the receiving assembly (23) are welded together up and down, and the movement process of the whole device is controlled by the electric control element;

the rotating assembly (2) comprises: the gear B is characterized in that a sleeve (25), a fixed shaft (26), a motor (13), a gear A (12), a gear B (14) and a gear A (12) and a gear B (14) are arranged at the tail end of the fixed shaft; the fixed shaft (26) is meshed with the motor (13) through a gear, and the fixed shaft (26) is movably hinged with the sleeve (25);

the material receiving assembly (23) comprises: the device comprises a base (18), a receiving groove (19), a material conveying table (20), a hydraulic cylinder E (21) and a slideway (22); the material conveying table (20) is arranged on the base (18) through a slideway (22), one end of the hydraulic cylinder E (21) is fixed on a side plate of the base (18), the other end of the hydraulic cylinder E is connected with the side surface of the material conveying table (20), and the slurry is conveyed through the expansion and contraction of the hydraulic cylinder E (21);

the processing assembly (3) comprises: the hydraulic cylinder A (11), the hydraulic cylinder B (27), the piston A (9), the piston B (24), the fixed mould (7) and the movable mould (10); the fixed mould (7) and the movable mould (10) are internally provided with heating elements and temperature measuring element mounting holes, the outer layer is wrapped with heat insulation materials, the fixed mould (7) and the movable mould (10) are closed to form two material cylinders A (28) and B (30), the two material cylinders are connected through a thin pipe (29), the hydraulic cylinder A (11) and the hydraulic cylinder B (27) are symmetrically arranged left and right, the hydraulic cylinder pushes the piston to move left and right in the material cylinder, so that semi-solid metal slurry is completely transferred in a reciprocating manner between the material cylinders A (28) and B (30) through the thin pipe (29), and the metal slurry is subjected to severe shearing action in the reciprocating transfer process so as to refine grains;

the mold locking assembly (15) consists of a hydraulic cylinder C (16) and a hydraulic cylinder D (17), two ends of the two hydraulic cylinders are respectively connected with the side plate (5) and the movable mold (10), and the expansion and contraction of the hydraulic cylinders drive the movable mold (10) to move so as to realize the mold opening and locking processes;

the fixed die (7) and the movable die (10) are internally embedded with a heating element and a temperature measuring element, the outer layer is wrapped with a heat insulation material, and a locating pin (31) and a locating hole are arranged on the die-closing surface;

the fixed die (7) and the movable die (10) are made of H13 steel.