Process for the production of a metal strip for a casting mold

Abstract

The application discloses a metal guide plate preparation process of a casting mold and relates to the technical field of metal guide plates, which is composed of the following steps: step one, pouring a proper amount of steel metal liquid into a pouring tank, wherein the steel metal liquid is obtained by high-chromium steel or high-chromium cast iron mixed with Ni powder, and the mass percentage of Ni in the steel metal liquid is 5%-15%; step two, the steel metal liquid in the pouring tank flows into the cavity formed by the splicing of two molds through a sprue, and the excess gas is discharged from the air vent, the leakage of the steel metal liquid can be avoided by arranging the sealing groove and the sealing block, the two groups of molds above are driven to approach and adhere to each other by rotating the threaded rod and the threaded block, a complete space is formed in the molds, and the space is used for pouring; and the sealing groove and the sealing block are arranged in the splicing between the two groups of molds in a manner of forming a labyrinth structure, so that the sealing property between the two groups of molds is enhanced.

Description

Technical Field

[0001] This invention relates to the field of metal guide plate technology, and more specifically to a process for preparing a metal guide plate for a casting mold. Background Technology

[0002] The mold industry is a key indicator of the automotive industry's development level. In recent years, many mid-to-high-end automotive molds have relied on imports. Existing oil-free self-lubricating guide plates made of cast copper alloy with inlaid graphite pillars are often constructed by embedding lubricant pillars into a single cast copper alloy plate. These guide plates are no longer suitable for the development of the automotive industry. A newer method uses thick, integrally cast copper alloy plates. This involves pre-machining pillar holes according to a specific arrangement, impregnating solid lubricant such as high-purity graphite or graphite material with Babbitt alloy to form cylinders, and then embedding these cylinders into the pre-made holes.

[0003] For example, Chinese Patent Publication No. CN106041100A discloses the following technical solution: a process for preparing a metal guide plate for a casting mold. This process uses a low-carbon steel precision-cast concave V-shaped guide plate substrate backing layer and a convex V-shaped guide plate substrate backing layer. A thin layer of copper alloy self-lubricating layer is set on two inclined surfaces of the concave V-shaped guide plate substrate backing layer and the convex V-shaped guide plate substrate backing layer. Steel replaces copper, and the uniform distribution of solid lubricant powder in the copper alloy replaces solid lubricant. This invention's process for preparing a metal guide plate for a casting mold saves on expensive copper and non-ferrous metals; it has high load-bearing capacity and fatigue strength, high mechanical strength, excellent friction and wear performance, and a long service life; it reduces energy consumption and labor, and lowers the material and production costs of the product.

[0004] The existing technology has the following problems:

[0005] However, this technology often results in pores with high porosity within the spray-deposited preform. High porosity will affect the density of the material and reduce its mechanical properties. Summary of the Invention

[0006] This invention provides a process for preparing a metal guide plate for a casting mold, in order to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a process for preparing a metal guide plate for a casting mold, comprising the following steps:

[0008] Step 1: Pour an appropriate amount of molten steel into a casting tank. The molten steel is obtained by mixing and smelting high-chromium steel or high-chromium cast iron with Ni powder, and the mass percentage of Ni in the molten steel is 5%-15%.

[0009] Step 2: The molten steel in the casting tank flows into the cavity where the two molds are joined through the gating system. Excess gas is discharged through the vent. By setting up sealing grooves and sealing blocks, leakage of molten steel can be prevented.

[0010] Step 3: After pouring is completed, cooling and molding are carried out. The extension and retraction of the first cylinder drives the heat exchange plate on the heat dissipation plate to contact the mold. By starting the water pump in the water tank, the coolant passes through the heat dissipation plate, quickly removing the heat absorbed by the heat dissipation plate and the heat exchange plate, so that it can continuously absorb heat from the mold to achieve the purpose of rapid cooling.

[0011] Step 4: After cooling is complete, the mold is removed. The second cylinder extends and retracts to drive the striking rod to knock on the mold, loosening the casting on the inner wall of the mold for easy removal.

[0012] A further improvement to the technical solution of the present invention is as follows: a metal guide plate preparation device for casting mold is proposed, including a base, and a casting mechanism is provided above the base;

[0013] The casting mechanism includes a support block, which is fixedly connected to the middle of the base. Mounting plates are fixedly connected to the top two sides of the base. Threaded rods are rotatably connected between the two mounting plates and the support block via bearings. Threaded blocks are threadedly connected to the outer walls of the two threaded rods, and the threaded blocks are slidably connected to the top of the base. Molds are fixedly connected to the tops of the two threaded blocks.

[0014] A first support plate is fixedly connected to the back of the base, and a casting tank is fixedly connected to the top of the first support plate at a position above the mold.

[0015] Using the above technical solution, the screw rod is rotated, which causes the two sets of molds above to move closer together and fit together through the screw block, forming a complete space inside for casting.

[0016] A further improvement of the technical solution of the present invention is that: the top of the mold on the left side is detachably connected to a sprue, and the top of the mold on the right side is fixedly connected to a vent hole.

[0017] Using the above technical solution, the solution enters through the gating system, and the excess air inside the space between the two sets of molds is discharged through the vent holes.

[0018] A further improvement of the technical solution of the present invention is that: a sealing groove is provided on the splicing surface of the mold on the left side, and a sealing block is fixedly connected to the splicing surface of the mold on the right side, and the sealing groove is slidably connected to the outer wall of the sealing block.

[0019] The above technical solution uses a sealing groove and sealing block to form a maze structure at the joint between the two sets of molds, thereby enhancing the sealing between the two sets of molds.

[0020] A further improvement of the technical solution of the present invention is that: a sliding groove is provided at the front and rear positions of the top of the base, and a slider is slidably connected to both sides of the inner wall of the two sliding grooves, and the slider is fixedly connected to the bottom of the threaded block at the corresponding position.

[0021] The above technical solution improves the stability of the threaded block by setting a slider to support it and allowing it to slide on the inner wall of the groove.

[0022] A further improvement of the technical solution of the present invention is that: a cooling mechanism is provided on the back of the base, the cooling mechanism includes a water tank, the water tank is fixedly connected to the back of the base, a water pump is fixedly connected to the bottom of the inner wall of the water tank, a support plate is fixedly connected to the top back of the water tank, a first cylinder is fixedly connected to the front of the support plate, a heat dissipation plate is provided at one end of the front of the first cylinder, and heat exchange plates are fixedly connected to both sides of the front of the heat dissipation plate, and one side of the heat exchange plate is in contact with the outer wall of the mold.

[0023] The above technical solution involves setting a first cylinder to extend and retract, thereby moving a heat exchange plate so that the heat exchange plate contacts the outer wall of the mold, which facilitates the absorption of heat from the mold for cooling.

[0024] A further improvement of the technical solution of the present invention is that: water pipes are fixedly connected to both ends of the heat sink and are in communication, and one end of the water pipe is in communication with the inside of the water tank.

[0025] The above technical solution involves activating a water pump in the water tank to allow coolant to pass through the heat dissipation plate, quickly removing the heat absorbed by the heat dissipation plate and heat exchange plate, thus continuously absorbing heat from the mold to achieve rapid cooling.

[0026] A further improvement of the technical solution of the present invention is that: a striking component is provided on both sides of the top of the base, the striking component includes two second support plates, and a second cylinder is fixedly connected to the side of the two second support plates near the mold, and one end of the second cylinder is a striking rod.

[0027] The above technical solution uses the extension and retraction of the second cylinder to drive the striking rod to strike the mold, thereby loosening the castings on the inner wall of the mold for easy removal.

[0028] A further improvement of the technical solution of the present invention is that: the striking rod has a cylinder, a sliding rod, a circular hole, and a spring, the circular hole is opened on the inner wall of the cylinder, and the sliding rod is slidably connected to the inner wall of the circular hole.

[0029] By adopting the above technical solution, the slide bar is slidably connected to the inner wall of the circular hole, which provides a buffer space when the slide bar is struck, thus avoiding direct impact that could affect its service life.

[0030] A further improvement of the technical solution of the present invention is that a spring is fixedly connected between the inner wall of the circular hole and one end of the slide rod.

[0031] The above technical solution uses the tension of a spring to push the slide bar back to its original position, making it easier to strike again.

[0032] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0033] 1. This invention provides a process for preparing a metal guide plate for casting molds. By rotating the threaded rod, the threaded block drives the two sets of molds above to approach and fit together, forming a complete space inside for casting. A labyrinth structure is formed by setting a sealing groove and a sealing block between the two sets of molds to enhance the sealing between the two sets of molds.

[0034] 2. This invention provides a process for preparing a metal guide plate for a casting mold. By setting a first cylinder to extend and retract, the heat dissipation plate is moved so that the heat exchange plate contacts the outer wall of the mold, so as to facilitate the absorption of heat from the mold for cooling. By starting the water pump in the water tank, the coolant passes through the heat dissipation plate and quickly removes the heat absorbed by the heat dissipation plate and the heat exchange plate, so that it continuously absorbs heat from the mold to achieve the purpose of rapid cooling.

[0035] 3. This invention provides a process for manufacturing a metal guide plate for a casting mold. By setting a sliding rod to slide on the inner wall of a circular hole, the sliding rod has a buffer space when struck, avoiding direct impact that could affect its service life. The tension of a spring is used to push the sliding rod back to its original position, making it easier to strike again. Attached Figure Description

[0036] Figure 1 This is a front view of the metal guide plate manufacturing process for a casting mold according to the present invention;

[0037] Figure 2 This is a front view of the metal guide plate manufacturing process for a casting mold according to the present invention;

[0038] Figure 3 This is an enlarged view of process A for preparing a metal guide plate for a casting mold according to the present invention;

[0039] Figure 4 This is a schematic diagram of the left mold structure of a metal guide plate manufacturing process for a casting mold according to the present invention.

[0040] Figure 5This is a schematic diagram of the right-hand mold structure of a metal guide plate manufacturing process for a casting mold according to the present invention.

[0041] Figure 6 This is a back view of the metal guide plate manufacturing process for a casting mold according to the present invention.

[0042] Figure 7 This is a cross-sectional view of the striking rod in the manufacturing process of the metal guide plate of a casting mold according to the present invention.

[0043] In the diagram: 1. Base; 2. Casting mechanism; 21. Support block; 22. Mounting plate; 23. Threaded rod; 24. Threaded block; 241. Slide groove; 242. Slider; 25. Mold; 251. Sealing groove; 252. Sealing block; 253. Vent hole; 254. Sprue; 3. First support plate; 4. Casting tank; 5. Cooling mechanism; 51. Water tank; 52. Support plate; 53. First cylinder; 54. Heat dissipation plate; 55. Heat exchange plate; 56. Water pipe; 6. Striking assembly; 61. Second support plate; 62. Second cylinder; 63. Striking rod; 631. Cylinder; 632. Slide rod; 633. Circular hole; 634. Spring. Detailed Implementation

[0044] Example 1

[0045] like Figure 1-7 As shown, the present invention provides a process for preparing a metal guide plate for a casting mold, comprising the following steps:

[0046] Step 1: Pour an appropriate amount of molten steel into a casting tank. The molten steel is obtained by mixing and smelting high-chromium steel or high-chromium cast iron with Ni powder, and the mass percentage of Ni in the molten steel is 5%-15%.

[0047] Step 2: The molten steel in the casting tank flows into the cavity where the two molds are joined through the gating system. Excess gas is discharged through the vent. By setting up sealing grooves and sealing blocks, leakage of molten steel can be prevented.

[0048] Step 3: After pouring is completed, cooling and molding are carried out. The extension and retraction of the first cylinder drives the heat exchange plate on the heat dissipation plate to contact the mold. By starting the water pump in the water tank, the coolant passes through the heat dissipation plate, quickly removing the heat absorbed by the heat dissipation plate and the heat exchange plate, so that it can continuously absorb heat from the mold to achieve the purpose of rapid cooling.

[0049] Step 4: After cooling is complete, the mold is removed. The second cylinder extends and retracts to drive the striking rod to knock on the mold, loosening the casting on the inner wall of the mold for easy removal.

[0050] Example 2

[0051] like Figure 1 , 2As shown in Figures 3, 4, and 5, based on Embodiment 1, this invention proposes a metal guide plate preparation device for casting molds, including a base 1. A casting mechanism 2 is arranged above the base 1. The casting mechanism 2 includes a support block 21, which is fixedly connected to the middle of the base 1. Mounting plates 22 are fixedly connected to the top two sides of the base 1. Threaded rods 23 are rotatably connected between the two mounting plates 22 and the support block 21 via bearings. Threaded blocks 24 are threadedly connected to the outer walls of the two threaded rods 23, and the threaded blocks 24 are slidably connected to the top of the base 1. Molds 25 are fixedly connected to the tops of the two threaded blocks 24. A first support plate 3 is fixedly connected to the back of the base 1. A casting tank 4 is fixedly connected to the top of the first support plate 3 above the molds 25. In this scheme, by rotating the threaded rods 23, the threaded blocks 24 drive the two sets of molds 25 above to move closer together and fit together, forming a complete space inside for casting. The left mold... The top of mold 25 is detachably connected to a sprue 254. A vent 253 is fixedly connected to the top of the right mold 25. In this design, the solution enters through the sprue 254, and excess air is discharged through the vent 253 into the space between the two molds 25. A sealing groove 251 is provided on the splicing surface of the left mold 25, and a sealing block 252 is fixedly connected to the splicing surface of the right mold 25. The sealing groove 251 and the outer wall of the sealing block 252 are slidably connected. This design, by setting the sealing groove 251 and sealing block 252 at the splicing point between the two molds 25, forms a maze structure to enhance the sealing between the two molds 25. The base 1 has sliding grooves 241 at the front and rear of its top. Sliding blocks 242 are slidably connected to both sides of the inner wall of each sliding groove 241, and the sliding blocks 242 are fixedly connected to the bottom of the corresponding threaded block 24. This design, by setting the sliding blocks 242 to support the threaded block 24 and allowing it to slide within the inner wall of the sliding groove 241, improves its stability.

[0052] In this embodiment, by rotating the threaded rod 23, the threaded block 24 drives the two sets of molds 25 above to move closer to each other and fit together, forming a complete space inside for casting. A maze structure is formed by splicing sealing grooves 251 and sealing blocks 252 between the two sets of molds 25 to enhance the sealing between the two sets of molds 25.

[0053] Example 3

[0054] like Figure 1 , 2As shown in Figure 7, based on Embodiment 2, the present invention provides a technical solution: Preferably, a cooling mechanism 5 is provided on the back of the base 1. The cooling mechanism 5 includes a water tank 51, which is fixedly connected to the back of the base 1. A water pump is fixedly connected to the bottom of the inner wall of the water tank 51. A support plate 52 is fixedly connected to the top back of the water tank 51. A first cylinder 53 is fixedly connected to the front of the support plate 52. A heat dissipation plate 54 is located at one end of the front of the first cylinder 53. Heat exchange plates 55 are fixedly connected to both sides of the front of the heat dissipation plate 54, and one side of the heat exchange plate 55 is connected to the mold 2. The outer wall of the mold 25 is in contact with the heat exchange plate 55. This design uses a first cylinder 53 to extend and retract, which moves the heat dissipation plate 54 so that the heat exchange plate 55 contacts the outer wall of the mold 25 to facilitate the absorption of heat from the mold 25 for cooling. Water pipes 56 are fixedly connected to both ends of the heat dissipation plate 54 and are connected to each other. One end of the water pipe 56 is connected to the inside of the water tank 51. This design uses a water pump in the water tank 51 to make the coolant pass through the heat dissipation plate 54, quickly remove the heat absorbed by the heat dissipation plate 54 and the heat exchange plate 55, so that the mold 25 can continuously absorb heat to achieve the purpose of rapid cooling.

[0055] In this embodiment, by setting the first cylinder 53 to extend and retract to drive the heat sink 54 to move, the heat exchange plate 55 is brought into contact with the outer wall of the mold 25 to facilitate the absorption of heat from the mold 25 for cooling. By starting the water pump in the water tank 51, the coolant passes through the heat sink 54 and quickly removes the heat absorbed by the heat sink 54 and the heat exchange plate 55, so that it can continuously absorb heat from the mold 25 to achieve the purpose of rapid cooling.

[0056] Example 4

[0057] like Figure 1 , 6 As shown, based on Embodiment 2, the present invention provides a technical solution: Preferably, a striking assembly 6 is provided on both sides of the top of the base 1. The striking assembly 6 includes two second support plates 61. A second cylinder 62 is fixedly connected to the side of the two second support plates 61 near the mold 25, and a striking rod 63 is provided at one end of the second cylinder 62. This solution uses the extension and retraction of the second cylinder 62 to drive the striking rod 63 to strike the mold 25, thereby loosening the casting on the inner wall of the mold 25 for easy removal. The striking rod 63 has a cylinder 631 and a sliding... The device comprises a rod 632, a circular hole 633, and a spring 634. The circular hole 633 is formed on the inner wall of the cylinder 631. The sliding rod 632 is slidably connected to the inner wall of the circular hole 633. This design provides a buffer space for the sliding rod 632 when it is struck, avoiding direct impact that could affect its service life. A spring 634 is fixedly connected between the inner wall of the circular hole 633 and one end of the sliding rod 632. This design uses the tension of the spring 634 to push the sliding rod 632 back to its original position, facilitating the next strike.

[0058] In this embodiment, by setting the slide bar 632 to slide on the inner wall of the circular hole 633, the slide bar 632 has a buffer space when it is struck, avoiding direct impact that affects its service life. The tension of the spring 634 pushes the slide bar 632 to reset, so as to facilitate the next strike.

Claims

1. A process for preparing a metal guide plate for a casting mold, characterized in that, It consists of the following steps: Step 1: Pour an appropriate amount of molten steel into a casting tank. The molten steel is obtained by mixing and smelting high-chromium steel or high-chromium cast iron with Ni powder, and the mass percentage of Ni in the molten steel is 5%-15%. Step 2: The molten steel in the casting tank flows into the cavity where the two molds are joined through the gating system. Excess gas is discharged through the vent. By setting up sealing grooves and sealing blocks, leakage of molten steel can be prevented. Step 3: After pouring is completed, cooling and molding are carried out. The extension and retraction of the first cylinder drives the heat exchange plate on the heat dissipation plate to contact the mold. By starting the water pump in the water tank, the coolant passes through the heat dissipation plate, quickly removing the heat absorbed by the heat dissipation plate and the heat exchange plate, so that it can continuously absorb heat from the mold to achieve the purpose of rapid cooling. Step 4: After cooling is complete, the mold is removed. The second cylinder extends and retracts to drive the striking rod to knock on the mold, loosening the casting on the inner wall of the mold for easy removal.

2. According to claim 1, a metal guide plate preparation process for a casting mold is provided, and a metal guide plate preparation device for a casting mold is proposed, comprising a base (1), characterized in that: A casting mechanism (2) is provided above the base (1); The casting mechanism (2) includes a support block (21), which is fixedly connected to the middle of the base (1). Mounting plates (22) are fixedly connected to the top two sides of the base (1). Threaded rods (23) are rotatably connected between the two mounting plates (22) and the support block (21) through bearings. Threaded blocks (24) are threadedly connected to the outer walls of the two threaded rods (23), and the threaded blocks (24) are slidably connected to the top of the base (1). Molds (25) are fixedly connected to the top of the two threaded blocks (24). A first support plate (3) is fixedly connected to the back of the base (1), and a casting tank (4) is fixedly connected to the top of the first support plate (3) above the mold (25).

3. The metal guide plate preparation equipment for casting molds according to claim 2, characterized in that: The top of the mold (25) on the left is detachably connected to a sprue (254), and the top of the mold (25) on the right is fixedly connected to a vent hole (253).

4. The metal guide plate preparation equipment for casting molds according to claim 2, characterized in that: The left mold (25) has a sealing groove (251) on its splicing surface, and the right mold (25) has a sealing block (252) fixedly connected to its splicing surface, and the sealing groove (251) is slidably connected to the outer wall of the sealing block (252).

5. The metal guide plate preparation equipment for casting molds according to claim 2, characterized in that: The base (1) has sliding grooves (241) at the front and back of the top, and sliders (242) are slidably connected to the inner walls of the two sliding grooves (241), and the sliders (242) are fixedly connected to the bottom of the corresponding threaded blocks (24).

6. The metal guide plate preparation equipment for casting molds according to claim 2, characterized in that: A cooling mechanism (5) is provided on the back of the base (1). The cooling mechanism (5) includes a water tank (51). The water tank (51) is fixedly connected to the back of the base (1). A water pump is fixedly connected to the bottom of the inner wall of the water tank (51). A support plate (52) is fixedly connected to the top back of the water tank (51). A first cylinder (53) is fixedly connected to the front of the support plate (52). A heat dissipation plate (54) is located at one end of the front of the first cylinder (53). Heat exchange plates (55) are fixedly connected to both sides of the front of the heat dissipation plate (54). One side of the heat exchange plate (55) is in contact with the outer wall of the mold (25).

7. The metal guide plate preparation equipment for casting molds according to claim 6, characterized in that: Water pipes (56) are fixedly connected to both ends of the heat sink (54) and are connected to each other, and one end of the water pipe (56) is connected to the inside of the water tank (51).

8. The metal guide plate preparation equipment for casting molds according to claim 2, characterized in that: The base (1) is provided with striking components (6) on both sides of the top. The striking components (6) include two second support plates (61). The two second support plates (61) are respectively fixedly connected to a second cylinder (62) on the side of the mold (25) and one end of the second cylinder (62) is a striking rod (63).

9. The metal guide plate preparation equipment for casting molds according to claim 8, characterized in that: The striking rod (63) has a cylinder (631), a sliding rod (632), a round hole (633), and a spring (634). The round hole (633) is opened on the inner wall of the cylinder (631), and the sliding rod (632) is slidably connected to the inner wall of the round hole (633).

10. The metal guide plate preparation equipment for casting molds according to claim 9, characterized in that: A spring (634) is fixedly connected between the inner wall of the circular hole (633) and one end of the slide rod (632).

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