Metal casting crystallizer capable of lubricating mold on line

Abstract

The utility model provides a metal casting crystallizer capable of lubricating a mold on line. The metal casting crystallizer comprises a shell, a mold base and a water sealing cap. A cooling inner pipe is arranged between the die holder and the water sealing cap, a cooling cavity is formed between the cooling inner pipe and the shell, the cooling inner pipe is sleeved with an inner sleeve, one end of the inner sleeve is inserted into the water sealing cap, a liquid passing gap is reserved between the other end of the inner sleeve and the die holder, an outer water passing channel is formed between the inner sleeve and the shell, and an inner water passing channel is formed between the inner sleeve and the cooling inner pipe. An oil supply hole is formed in the part, extending out of the shell, of the die holder, the oil supply hole is communicated with an inner hole of the die holder, and an oil supply pipe is mounted on the oil supply hole and connected with a lubricating oil supply system; an oil absorption layer is arranged on the inner wall of the die holder and provided with a plurality of oil through holes. Lubricating oil is injected into the continuous casting graphite die on line in real time through the lubricating oil supply system, so that the die is always in an optimal lubricating state, the service life of the die is remarkably prolonged, and the surface quality of a cast product is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of metal casting, and in particular relates to a crystallizer for metal casting with an online lubrication mold. Background Art

[0002] In the field of metal horizontal continuous casting or metal continuous casting, the crystallizer and crystallization mold are the core components of the horizontal continuous casting equipment, and their performance directly affects the quality of the casting products and the production efficiency of the continuous casting machine. At present, the conventional crystallizer lubrication method mainly relies on the manual infiltration of lubricating oil into the mold in the early stage. In the later stage, since the mold is always in the molten metal liquid, the mold cannot be lubricated effectively. This method is not only inefficient, but also cannot keep the mold in a lubricated state all the time, resulting in a low mold service life and the quality of the continuous casting products cannot be guaranteed. Therefore, it is necessary to improve the existing crystallizer. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a metal casting crystallizer with an online lubricating mold, which can realize online and real-time filling of lubricating oil into the continuous casting graphite mold, so that the mold is always in the best lubrication state, thereby extending the service life of the mold and improving the quality of the casting product.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A crystallizer for metal casting with an online lubrication mold comprises an outer shell and a mold base and a water sealing cap installed at both ends of the outer shell; a cooling inner tube is inserted between the mold base and the water sealing cap, a cooling cavity is formed between the cooling inner tube and the outer shell, an inner sleeve is sleeved on the outer side of the cooling inner tube, one end of the inner sleeve is inserted into the water sealing cap, a liquid gap is left between the other end of the inner sleeve and the mold base, an outer water passage is formed between the inner sleeve and the outer shell, and an inner water passage is formed between the inner sleeve and the cooling inner tube; an oil supply hole is provided on the part of the mold base extending out of the outer shell, the oil supply hole is connected with the inner hole of the mold base, an oil supply pipe is installed on the oil supply hole, and the oil supply pipe is connected to the lubricating oil supply system; an oil absorption layer is provided on the inner wall of the mold base, and a plurality of oil holes are provided on the oil absorption layer.

[0006] Furthermore, the lubricating oil supply system includes an oil storage cylinder, an oil supply pump is provided on the oil storage cylinder, and a switch is provided on the oil supply pipe.

[0007] Furthermore, the lubricating oil supply system also includes a PLC controller. A detection port is also provided on the mold base, and a dry-wet measurement sensor is installed in the detection port. The oil supply pump and the dry-wet measurement sensor are connected to the PLC controller at the same time.

[0008] Furthermore, the cooling inner tube is made of red copper.

[0009] Furthermore, the mold base includes a connecting section and a mounting section, and a matching section and a tapered section are provided in the inner hole of the mold base; the connecting section is inserted into the outer shell, and the matching section matches with the cooling inner tube.

[0010] Furthermore, a cooling groove is provided at one end of the mold base located on the inner side of the shell, and the cooling groove is communicated with the cooling cavity.

[0011] Furthermore, the inner hole of the water sealing cap includes an inner fitting section and an outer fitting section, the inner diameter of the inner fitting section is larger than the inner diameter of the outer fitting section, a positioning step is formed between the outer fitting section and the inner fitting section, and a water inlet and a water outlet are provided along the radial direction of the water sealing cap; the water inlet is connected to the outer water passage, and the water outlet is connected to the inner water passage.

[0012] Furthermore, one end of the inner sleeve is inserted into the inner matching section of the water sealing cap, and the end surface of the end abuts against the positioning step.

[0013] Furthermore, an annular water groove is provided at one end of the matching section in the water sealing cap facing the cooling chamber, and the cooling chamber is connected with the water inlet through the annular water groove.

[0014] Furthermore, the water inlet is arranged in the inner matching section, and the water outlet is arranged in the outer matching section.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The invention creates an online and real-time lubricating oil supply system to add lubricating oil to the continuous casting graphite mold, so that the mold is always in the best lubricating state, thereby significantly extending the service life of the mold. At the same time, since the lubricity of the mold is continuously improved, the quality of the surface of the casting product is also improved, defects such as crystal grain depressions are significantly reduced, and the surface finish of the product is significantly improved. In addition, in the solution where the lubricating oil supply system is provided with a PLC controller, the degree of automation is high, the operation is simple, and the maintenance is convenient, which can effectively reduce production costs and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure created by the present invention;

[0019] Figure 2 This is a schematic diagram of a PLC controller provided in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of a mold base for creating a mold base in the present invention;

[0021] Figure 4It is a schematic diagram of the water sealing cap in the invention;

[0022] Figure 5 This is a schematic diagram of a wet / dry detection sensor provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] A metal casting crystallizer with an online lubricating mold, such as Figures 1 to 5As shown, it includes an outer shell 1 and a mold base 2 and a water sealing cap 3 respectively installed at both ends of the outer shell, and the mold is installed on the mold base; a cooling inner tube 4 is passed through the mold base and the water sealing cap, and a cooling cavity 10 is formed between the cooling inner tube and the outer shell, and an inner sleeve 5 is sleeved on the outer side of the cooling inner tube, one end of the inner sleeve is inserted into the water sealing cap, and a liquid gap is left between the other end of the inner sleeve and the mold base, an outer water passage is formed between the inner sleeve and the outer shell, and an inner water passage is formed between the inner sleeve and the cooling inner tube; the part of the mold base extending out of the outer shell is provided with an oil supply hole 6, the oil supply hole is connected with the inner hole of the mold base, and an oil supply pipe 7 is installed on the oil supply hole, and the oil supply pipe is connected to the lubricating oil supply system.

[0028] The inner wall of the mold base is provided with an oil absorption layer 8, which can reduce the loss of oil during the casting process, thereby improving the adsorption effect of the lubricating oil and the lubricating performance of the mold. At the same time, a number of oil holes are provided on the oil absorption layer to ensure that the lubricating oil can penetrate into the mold smoothly. As an example, the cooling inner tube is made of copper.

[0029] In an optional embodiment, if Figure 2 As shown, the lubricating oil supply system includes an oil storage cylinder 9, an oil supply pump is provided on the oil storage cylinder, and a switch 11 is provided on the oil supply pipe. In a further improved scheme, the lubricating oil supply system also includes a PLC controller 12, and a detection port is also provided on the mold base, and a dry-wet measurement sensor 13 is installed in the detection port. The oil supply pump and the dry-wet measurement sensor are connected to the PLC controller at the same time, which are used to monitor the humidity in the mold mounting hole (i.e., the oil content of the mold) in real time, and feed the data back to the PLC control system. The PLC automatic control system determines whether it is necessary to start the oil supply pump for refueling based on the received data, and can also determine the refueling interval and refueling amount by presetting the PLC control system parameters as needed. It should be pointed out that the above-mentioned dry-wet measurement sensor can also use other types of sensors, such as capacitive sensors or infrared sensors, which can only detect the degree of wetness inside the mold base. Those skilled in the art can make conventional selections as needed.

[0030] By the above method, it can be ensured that the mold is always in the best lubrication state during the casting process. As an example, the oil supply pump can adopt a commercially available adjustable oil supply pump, which can dynamically adjust the oil supply pressure and oil supply amount according to the instructions of the PLC automatic control system. This can not only more accurately control the amount of lubricating oil added, but also avoid adverse effects on the mold due to excessive or insufficient oil supply.

[0031] The die base includes a connecting section 14 and a mounting section 15, and a matching section and a tapered section are provided in the inner hole of the die base; the connecting section is inserted into the outer shell, and the matching section matches the cooling inner tube. A cooling groove 16 is provided at one end of the die base located inside the outer shell, and the cooling groove is connected to the cooling cavity. The inner hole of the water sealing cap includes an inner matching section 17 and an outer matching section 18, and the inner diameter of the inner matching section is larger than the inner diameter of the outer matching section, and a positioning step is formed between the outer matching section and the inner matching section.

[0032] A water inlet 19 and a water outlet 20 are provided along the radial direction of the water sealing cap; the water inlet is connected to the outer water passage, and the water outlet is connected to the inner water passage. One end of the inner sleeve is inserted into the inner fitting section of the water sealing cap, and the end face of the inner sleeve abuts against the positioning step. An annular water groove 21 is provided at one end of the inner fitting section of the water sealing cap facing the cooling cavity, and the cooling cavity and the water inlet are connected by the annular water groove. The water inlet is arranged in the inner fitting section, and the water outlet is arranged in the outer fitting section.

[0033] The invention creates an online and real-time lubricating oil supply system to add lubricating oil to the continuous casting graphite mold, so that the mold is always in the best lubricating state, thereby significantly extending the service life of the mold. At the same time, since the lubricity of the mold is continuously improved, the quality of the surface of the casting product is also improved, defects such as crystal grain depressions are significantly reduced, and the surface finish of the product is significantly improved. In addition, in the solution where the lubricating oil supply system is provided with a PLC controller, the degree of automation is high, the operation is simple, and the maintenance is convenient, which can effectively reduce production costs and improve production efficiency.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal casting crystallizer with online lubrication mold, characterized in that: It includes an outer shell and a mold base and a water sealing cap installed at both ends of the outer shell; a cooling inner tube is passed through the mold base and the water sealing cap, a cooling cavity is formed between the cooling inner tube and the outer shell, an inner sleeve is sleeved on the outer side of the cooling inner tube, one end of the inner sleeve is inserted into the water sealing cap, a liquid gap is left between the other end of the inner sleeve and the mold base, an outer water passage is formed between the inner sleeve and the outer shell, and an inner water passage is formed between the inner sleeve and the cooling inner tube; an oil supply hole is provided on the part of the mold base extending out of the outer shell, the oil supply hole is connected with the inner hole of the mold base, an oil supply pipe is installed on the oil supply hole, and the oil supply pipe is connected to the lubricating oil supply system; an oil absorption layer is provided on the inner wall of the mold base, and a plurality of oil holes are provided on the oil absorption layer.

2. The metal casting crystallizer with online lubrication mold according to claim 1, characterized in that: The lubricating oil supply system comprises an oil storage cylinder, an oil supply pump is arranged on the oil storage cylinder, and a switch is arranged on the oil supply pipe.

3. The metal casting crystallizer with online lubrication mold according to claim 2, characterized in that: The lubricating oil supply system also includes a PLC controller. A detection port is also provided on the mold base. A dry-wet measurement sensor is installed in the detection port. The oil supply pump and the dry-wet measurement sensor are connected to the PLC controller at the same time.

4. The metal casting crystallizer with online lubrication mold according to claim 1, characterized in that: The cooling inner tube is made of red copper.

5. The metal casting crystallizer with online lubrication mold according to claim 1, characterized in that: The die base comprises a connecting section and an installation section, and a matching section and a cone section are arranged in the inner hole of the die base; the connecting section is inserted into the outer shell, and the matching section matches with the cooling inner tube.

6. The metal casting crystallizer with online lubrication mold according to claim 5, characterized in that: A cooling groove is arranged at one end of the mold base located on the inner side of the shell, and the cooling groove is communicated with the cooling cavity.

7. The metal casting crystallizer with online lubrication mold according to claim 1, characterized in that: The inner hole of the water sealing cap includes an inner fitting section and an outer fitting section. The inner diameter of the inner fitting section is larger than the inner diameter of the outer fitting section. A positioning step is formed between the outer fitting section and the inner fitting section. A water inlet and a water outlet are provided along the radial direction of the water sealing cap. The water inlet is connected to the outer water passage, and the water outlet is connected to the inner water passage.

8. The metal casting crystallizer with online lubrication mold according to claim 7, characterized in that: One end of the inner sleeve is inserted into the inner matching section of the water sealing cap, and the end surface of the inner sleeve abuts against the positioning step.

9. The metal casting crystallizer with online lubrication mold according to claim 8, characterized in that: An annular water groove is arranged at one end of the matching section in the water sealing cap facing the cooling cavity, and the cooling cavity is connected with the water inlet through the annular water groove.

10. The metal casting crystallizer with online lubrication mold according to claim 7, characterized in that: The water inlet is arranged in the inner matching section, and the water outlet is arranged in the outer matching section.

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