Charging barrel and die-casting machine
By adding an electrochemical protection component to the barrel and applying cathode current to it, the problems of wear and peeling of the inner wall of the barrel are solved, significantly extending the service life and reducing costs.
Patent Information
- Application Number
- CN202420025964.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-04
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-01-04
AI Technical Summary
During use, the barrel is prone to problems such as pits, wear and peeling of the inner wall, which leads to failure. The traditional solution is costly and difficult to widely use.
Electrochemical protection components are added to the barrel body to apply cathode current to the barrel to delay or avoid corrosion of the barrel, thereby reducing the interaction deterioration between corrosion and mechanical friction.
It significantly extends the service life of the barrel, reduces the risk of barrel failure, reduces the cost of maintenance and replacement, and is also suitable for barrels of various sizes and models.
Smart Images
Figure CN222695992U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of die-casting machines, and in particular to a barrel and a die-casting machine. Background Art
[0002] As the core component in the injection chamber of the die-casting machine, the main function of the barrel is to work in conjunction with the injection punch to deliver high-temperature metal liquid to the mold cavity, thereby completing the molding process of the casting. However, due to the scouring of high-temperature metal liquid and the friction with the injection punch, the barrel often has problems such as pits, wear and peeling on the inner wall after a certain number of uses, resulting in barrel failure. When replacing or repairing the barrel, the operation is cumbersome and takes a long time, which will interrupt the continuity of production and damage the stability of the product. Therefore, the development of high-performance barrels is an urgent problem that the die-casting industry needs to solve.
[0003] In order to avoid these pits, wear and peeling problems on the barrel, the traditional solution is to enhance its heat resistance and reduce mechanical wear in high temperature environments, such as using barrel materials with higher heat resistance or performing cladding surface treatment on the inner wall. However, these methods usually involve expensive and complex processing equipment, and there are also problems such as cladding layer shedding, which leads to a sharp increase in barrel costs and is difficult to be widely used. Utility Model Content
[0004] The utility model is made to solve the above technical problems, and its purpose is to provide a barrel and a die-casting machine. When the die-casting machine using the barrel is performing a die-casting operation, the barrel has a longer service life.
[0005] In order to achieve the above-mentioned purpose, on the one hand, the utility model provides a barrel, comprising: a barrel body, a side wall of which is provided with a feed inlet; an electrochemical protection component, connected to the barrel body, and capable of applying a cathode current to the barrel body.
[0006] Preferably, the electrochemical protection component is a metal part whose potential is lower than that of the barrel body.
[0007] Preferably, the metal piece is any single substance of magnesium, zinc, aluminum, titanium, calcium, zirconium, sodium, potassium, lithium metal, or an alloy thereof.
[0008] Preferably, when the metal part is an alloy, the ratio of the number of atoms of each metal element to the number of atoms of all metal elements is between 25% and 99.9%.
[0009] Preferably, the metal piece is embedded in the barrel body.
[0010] Preferably, the ratio of the volume of the metal piece to the volume of the barrel body is 0.01%-99%.
[0011] Preferably, the metal piece is annular and sleeved on the barrel body; or the metal piece is connected to the barrel body via a wire.
[0012] Preferably, the electrochemical protection component is a protection circuit, which includes a DC power supply, the negative electrode of which is connected to the barrel body, and a cathode current is applied to the barrel body.
[0013] Preferably, the positive electrode of the DC power supply is connected to the barrel body via a resistor of a preset resistance; and / or the positive electrode of the DC power supply is grounded, and the barrel body is grounded at the same time.
[0014] In order to achieve the above object, on the other hand, the utility model provides a die-casting machine, comprising: the barrel as described above.
[0015] According to the above description and practice, the barrel described in the utility model has an electrochemical protection component added to the barrel body, which can apply a cathode current to the barrel body, thereby delaying or even preventing the barrel body from being corroded. It can reduce the barrel failure phenomenon caused by the interactive deterioration of corrosion and mechanical friction from the root, and realize the improvement of the service life of the barrel. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the barrel involved in the first embodiment of the present utility model.
[0017] Figure 2 This is a schematic diagram of the structure of the barrel involved in the second embodiment of the present utility model.
[0018] Figure 3 This is a schematic diagram of the structure of the barrel involved in the third embodiment of the present utility model.
[0019] The reference numerals in the figure are:
[0020] 1. Barrel body; 11. Feed inlet; 2. Metal parts; 3. DC power supply; 4. Resistors. DETAILED DESCRIPTION
[0021] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0022] In addition, the accompanying drawings are only schematic diagrams of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated descriptions will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set in" are used to express the meaning of open-ended inclusion, and mean that in addition to the listed elements / components / etc., there may be other elements / components / etc.; the terms "first", "second", etc. are only used as marks, and are not restrictions on the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model 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 utility model.
[0023] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 an indirect connection 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 this utility model can be understood according to specific circumstances.
[0024] The present disclosure provides a barrel used in a die-casting machine, which can significantly delay the occurrence of pits, wear and peeling on the inner wall of the barrel compared to traditional barrels, and has a longer service life. Specifically, the applicant found in the actual production process that the occurrence of pits, wear and peeling on the inner wall of the barrel is not only caused by scouring and mechanical friction as generally believed in the industry, but also by the corrosion of the inner wall. Specifically, it includes the reaction corrosion of the hot working die steel constituting the barrel by the molten metal liquid and the erosion of the ambient gas.
[0025] Usually, corrosion first forms pitting pits, and then the corrosion is slowed down due to the formation of a protective layer. However, when mechanical friction is encountered during the corrosion process, the protective layer will be damaged, and the new metal surface will be exposed, which will greatly accelerate the expansion of the pitting pits and eventually lead to the failure of the barrel. It can be seen that the interaction between corrosion and mechanical friction is the main reason for the above-mentioned problems and failure of the barrel. Based on this, the present disclosure cuts in from the perspective of corrosion resistance and improves the traditional barrel to delay the problems of pitting, wear and peeling on the inner wall of the barrel, thereby extending the service life.
[0026] In the present disclosure, an electrochemical protection method is used to improve the corrosion resistance of the barrel. Specifically, the electrochemical corrosion of metal materials is caused by the existence of a certain potential difference between the various parts of the metal surface when the metal contacts the electrolyte solution. The parts with high potential will lose electrons first, resulting in corrosion. Therefore, in the present disclosure, an electrochemical protection component is introduced on the barrel, and a cathode current can be applied to the barrel to cause cathodic polarization. As a result of polarization, the potential of the barrel moves in the negative direction, and the barrel is at a lower potential until the original potential difference disappears, thereby achieving the purpose of preventing the barrel from being (or not easily) corroded. In this way, the barrel failure phenomenon caused by the interactive deterioration of corrosion and mechanical friction can be reduced from the root, and the service life of the barrel can be increased.
[0027] Based on this, the barrel in the present disclosure includes a barrel body and an electrochemical protection component connected thereto, which can apply a cathode current to the barrel body, thereby delaying or even preventing the barrel body from being corroded, and can reduce the barrel failure phenomenon caused by the interactive deterioration of corrosion and mechanical friction from the root, thereby improving the service life of the barrel.
[0028] The technical solution is described below with reference to specific embodiments.
[0029] Embodiment 1
[0030] Please attach Figure 1 The barrel in this embodiment includes a barrel body 1 and an electrochemical protection component connected thereto. The main structure of the barrel body 1 is the same as that of a traditional barrel, and an inlet 11 is provided on one side for the molten metal to enter. In this embodiment, the electrochemical protection component uses a metal part 2 whose potential is lower than that of the barrel body 1. The metal part 2 is directly connected to the barrel body 1. Specifically, in this embodiment, a total of five metal parts 2 embedded in the barrel body 1 are provided. Since the potential of these metal parts 2 is lower than that of the barrel body 1, they will continue to release electrons to the barrel body 1 to form a cathode current, which plays a role in protecting the barrel from corrosion. When the barrel is in a corrosive environment, these metal parts 2 will corrode before the barrel body 1, indirectly improving the corrosion resistance of the barrel body 1, reducing the barrel failure phenomenon caused by the mutual deterioration of corrosion and mechanical friction, and realizing the improvement of the service life of the barrel.
[0031] In this embodiment, the five metal parts 2 are embedded in the end surface of the barrel body 1 facing the injection head, and will not contact other structures during use, and are not prone to falling off, and can stably maintain the above-mentioned anti-corrosion function. In other embodiments, the number and setting position of the metal parts 2 can also be changed according to actual needs to ensure that they are connected to the barrel body 1 and can continuously release electrons to the barrel body 1 to form a cathode current.
[0032] Furthermore, the metal part 2 is any single substance of magnesium, zinc, aluminum, titanium, calcium, zirconium, sodium, potassium, and lithium metal, or an alloy thereof, such as an alloy composed of any multiple metals thereof. Compared with the traditional hot working die steel constituting the barrel body 1, these metal elements have a lower potential, and when in contact with the barrel body 1, they can continuously release electrons to the barrel body 1 to form a cathode current. When the metal part 2 is an alloy composed of the above-mentioned metal elements, the atomic ratio of each metal element in its constituent elements is between 25% and 99.9%. The alloy metal part 2 composed of multiple metal elements within this ratio range has a lower potential and can continuously release electrons to the barrel body 1 to form a cathode current.
[0033] In addition, the ratio of the volume of the metal part 2 embedded in the barrel body 1 to the volume of the barrel body 1 is in the range of 0.01%-99%. The specific value can be adjusted according to the volume, design life and other parameters of the barrel body 1, so as to ensure that it has better corrosion resistance within the design service life at the lowest possible cost without affecting the structural strength of the barrel body 1.
[0034] The barrel in this embodiment forms electrochemical protection for the barrel body 1 by adding a low-potential metal part 2 to the barrel body 1, thereby improving the corrosion resistance of the barrel body 1, reducing the barrel failure phenomenon caused by the mutual deterioration of corrosion and mechanical friction, and improving the service life of the barrel. Moreover, while this type of structural form of the barrel improves the service life, the increase in cost is relatively low and even negligible. In addition, there is no need to connect additional equipment during production, which will not affect the basic die-casting operation.
[0035] Traditional methods of increasing the service life of barrels, such as strengthening the inner wall of barrels by laser surface cladding, are limited in the size of the inner wall of barrels, and thus can only be applied to barrels of some large-tonnage die-casting machines. However, the barrels provided in this embodiment can also increase their service life by anti-corrosion treatment, and this method is applicable to barrels of various sizes and models, and has a wide range of applications.
[0036] Embodiment 2
[0037] Please attach Figure 2The barrel in this embodiment includes a barrel body 1 and an electrochemical protection component connected thereto. The main structure of the barrel body 1 is the same as that of a traditional barrel, and a feed port 11 is provided on one side for the molten metal to enter. In this embodiment, the electrochemical protection component uses a metal part 2 whose potential is lower than that of the barrel body 1. The metal part 2 is directly connected to the barrel body 1. Specifically, in this embodiment, the metal part 2 is an annular structure, which is directly sleeved on the barrel body 1 and will not affect the structure of the barrel body 1. And the metal part 2 can be installed after the barrel body 1 is processed. Since the potential of the metal part 2 is lower than that of the barrel body 1, it will continue to release electrons to the barrel body 1, forming a cathode current, which plays a role in protecting the barrel body 1 from corrosion. When the barrel is in a corrosive environment, the metal part 2 will corrode before the barrel body 1, indirectly improving the corrosion resistance of the barrel body 1, reducing the barrel failure phenomenon caused by the mutual deterioration of corrosion and mechanical friction, and realizing the improvement of the service life of the barrel.
[0038] Compared with the barrel in Example 1, the barrel in this embodiment is modified only in the metal part 2 constituting the electrochemical protection component. Specifically, the structural shape and setting position of the metal part 2 itself are changed. Other matters such as the material and quantity of the metal part 2 are the same as those in Example 1 and will not be repeated here.
[0039] In addition, in other embodiments, the metal member 2 can also be externally arranged and then connected to the barrel body 1 through a wire, which can also continuously release electrons to the barrel body 1 to form a cathode current, thereby protecting the barrel body 1 from corrosion. In this case, the structural impact on the raw material barrel body 1 will be lower.
[0040] The barrel in this embodiment forms electrochemical protection for the barrel body 1 by adding a low-potential metal part 2 to the barrel body 1, thereby improving the corrosion resistance of the barrel body 1, reducing the barrel failure phenomenon caused by the mutual deterioration of corrosion and mechanical friction, and improving the service life of the barrel. Moreover, while this type of structural form of the barrel improves the service life, the increase in cost is relatively low and even negligible. In addition, there is no need to connect additional equipment during production, which will not affect the basic die-casting operation.
[0041] Traditional methods of increasing the service life of barrels, such as strengthening the inner wall of barrels by laser surface cladding, are limited in the size of the inner wall of barrels, and thus can only be applied to barrels of some large-tonnage die-casting machines. However, the barrels provided in this embodiment can also increase their service life by anti-corrosion treatment, and this method is applicable to barrels of various sizes and models, and has a wide range of applications.
[0042] Embodiment 3
[0043] Please attach Figure 3 The barrel in this embodiment includes a barrel body 1 and an electrochemical protection component connected thereto. The main structure of the barrel body 1 is the same as that of a traditional barrel, and a feed port 11 is provided on one side for the molten metal to enter. The electrochemical protection component in this embodiment adopts a protection circuit, which includes a DC power supply 3, wherein the negative electrode of the DC power supply 3 is connected to the barrel body 1, and a cathode current is continuously applied to the barrel body 1 to protect the barrel from corrosion. By improving the corrosion resistance of the barrel body 1 and reducing the barrel failure phenomenon caused by the interactive deterioration of corrosion and mechanical friction, the service life of the barrel can be improved.
[0044] It is beyond doubt that the DC power supply 3 continuously applies cathode current to the barrel body 1, and a circuit loop must be formed between the two. In practical applications, the positive electrode of the DC power supply 3 can be connected to the barrel body 1 via a resistor 4 with a preset resistance value; the positive electrode of the DC power supply 3 can also be directly grounded, and the barrel body 1 can also be grounded at the same time, so that the DC power supply 3 and the barrel body 1 indirectly form a loop; or, the above two forms are adopted at the same time, that is, the positive electrode of the DC power supply 3 is connected to the barrel body 1 through a resistor 4 with a preset resistance value, and the positive electrode of the DC power supply 3 and the barrel body 1 are grounded at the same time. By setting the resistor 4, the size of the cathode current applied to the barrel body 1 can be controlled to achieve the best anti-corrosion effect.
[0045] The barrel in this embodiment forms electrochemical protection for the barrel body 1 by adding a protection circuit capable of applying cathode current to the barrel body 1, thereby improving the corrosion resistance of the barrel body 1, reducing the barrel failure phenomenon caused by the mutual deterioration of corrosion and mechanical friction, and improving the service life of the barrel. Moreover, this type of structural form of the barrel has a relatively low cost increase, which can even be ignored, while improving the service life. In addition, there is no need to connect additional equipment during production, which will not affect the basic die-casting operation.
[0046] Traditional methods of increasing the service life of barrels, such as strengthening the inner wall of barrels by laser surface cladding, are limited to the inner wall size of barrels, and thus can only be used to treat barrels of some large-tonnage die-casting machines. However, the barrel provided in this embodiment can also increase the service life of barrels by performing anti-corrosion treatment through an external protection circuit, and this method is applicable to barrels of various sizes and models, and has a wide range of applications.
[0047] Embodiment 4
[0048] In this embodiment, a die-casting machine is provided. The die-casting machine adopts any one of the barrels in the above embodiments one to three. When performing die-casting operations, the service life of the barrel can be significantly improved, which can reduce production costs.
[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A barrel, characterized in that: include: The barrel body has a feeding port on its side wall; An electrochemical protection component connected to the barrel body and capable of applying a cathode current to the barrel body; in The electrochemical protection component is a metal part with a potential lower than that of the barrel body, or The electrochemical protection component is a protection circuit, which includes a DC power supply, the negative electrode of which is connected to the barrel body, and a cathode current is applied to the barrel body.
2. The cartridge according to claim 1, characterized in that The electrochemical protection component is a metal part with a potential lower than that of the barrel body; The metal piece is embedded in the barrel body.
3. The cartridge according to claim 2, characterized in that The ratio of the volume of the metal piece to the volume of the barrel body is 0.01%-99%.
4. The cartridge according to claim 1, characterized in that The electrochemical protection component is a metal part with a potential lower than that of the barrel body; The metal piece is annular and sleeved on the barrel body; or The metal piece is connected to the barrel body via a wire.
5. The cartridge according to claim 1, characterized in that The electrochemical protection component is a protection circuit, which includes a DC power supply, the negative electrode of which is connected to the barrel body and applies a cathode current to the barrel body; The positive electrode of the DC power supply is connected to the barrel body via a resistor of a preset resistance; and / or The positive pole of the DC power supply is grounded, and the barrel body is grounded at the same time.
6. A die casting machine, characterized in that: include: A cartridge as claimed in any one of claims 1 to 5.