Hot die forging release agent and preparation method

Abstract

The present invention discloses a hot die forging release agent and a preparation method, comprising the following raw material components in predetermined weight portions: 20 to 80 parts by weight of organic oil, 10 to 60 parts by weight of base oil, 10 to 20 parts by weight of solvent oil, 0.1 to 33 parts by weight of a new antioxidant, and 5 to 35 parts by weight of graphite; the new antioxidant is a mixture of multiple inorganic polymer compounds; wherein the multiple inorganic polymer compounds include at least two of polyethylene, polypropylene, epoxy resin, silicone resin, acrylic resin, and alkyd resin. The hot die forging release agent of the present invention greatly improves its lubrication and heat resistance, has a long service life, meets the requirements of continuous production at high temperatures in the hot die forging process, and simultaneously reduces raw material loss, effectively saving material costs.

Description

Technical Field

[0001] The invention relates to the technical field of release agents, in particular to a hot die forging release agent and a preparation method thereof. Background Art

[0002] Hot die forging is a forging process that achieves dynamic recrystallization and static recrystallization by heating a light alloy to the recrystallization temperature and achieving large deformation through forging. It is widely used in the manufacture of parts with high strength and surface requirements such as automotive wheels, pistons, and rockers. During the forging process, due to the high temperature conditions of hot die forging and the diversity of product shapes, the metal may experience uneven flow rate and uneven pressure in the cavity, resulting in abnormal die sticking during production, such as die roughness and material sticking to the die. Therefore, it is necessary to spray a release agent on the die before forging the product to isolate the metal and the die. At the same time, the lubricating components in the release agent adhere to the die to lubricate it, helping metal forming.

[0003] However, the hot die forging release agents on the market are mainly produced by well-known foreign companies such as Derunbao, Quaker, Henkel, and MFL. The main formula of their release agents is base oil + solvent oil + antioxidant + graphite. Although it can basically meet the requirements of hot die forging, when the mold is higher than 400°C, that is, under high temperature conditions, there is a situation where the release agent fails and the amount of release agent increases, resulting in a large amount of release agent waste and high cost; especially when the temperature is higher than 380°C, conventional base oil is extremely flammable. Under such working conditions, the combustion of the release agent will lead to a decrease in the lubricating effect of the oil and a reduction in the total amount of lubricating media such as graphite. As the temperature gets higher and higher, the effect of traditional release agents will become worse and worse, resulting in abnormal die sticking, which cannot meet the requirements of continuous production of hot die forging processes at high temperatures.

[0004] Therefore, a hot die forging release agent and a preparation method are needed, which have good lubrication performance, excellent heat resistance, and long service life, can meet the requirements of continuous production of hot die forging process at high temperature, and can also reduce material costs. Summary of the Invention

[0005] In response to the problems existing in the above-mentioned prior art, the present invention provides a hot die forging release agent and a preparation method, which greatly improves the lubrication performance and heat resistance, and meets the requirements of continuous production of hot die forging process at high temperature.

[0006] The present invention provides a hot die forging release agent, comprising the following raw material components in predetermined weight portions:

[0007] 20-80 parts by weight of organic oil, 10-60 parts by weight of base oil, 10-20 parts by weight of solvent oil, 0.1-33 parts by weight of new antioxidant, and 5-35 parts by weight of graphite; the new antioxidant is a mixture of multiple inorganic polymer compounds, and the new antioxidant includes at least two of polyethylene, polypropylene, epoxy resin, silicone resin, acrylic resin, and alkyd resin.

[0008] Furthermore, the Saybolt viscosity of the base oil is higher than 150SN.

[0009] Furthermore, the organic oil has a flash point higher than 240°C.

[0010] Furthermore, the ignition point of the organic oil is not lower than 400°C.

[0011] Furthermore, the organic oil is an organic compound or grease.

[0012] Furthermore, the hot die forging release agent is a powdery or granular solid.

[0013] Furthermore, the hot die forging release agent is in a state of powdery or granular solid coated in the organic oil.

[0014] Furthermore, the graphite is fine flake graphite.

[0015] Furthermore, the average particle size of the graphite is 3 to 10 μm.

[0016] The present invention also provides a method for preparing a hot die forging release agent, comprising:

[0017] According to the preset weight parts, 20 to 80 parts by weight of organic oil, 10 to 60 parts by weight of base oil, 10 to 20 parts by weight of solvent oil, 0.1 to 33 parts by weight of new antioxidant, and 5 to 35 parts by weight of graphite are weighed;

[0018] Mixing the weighed base oil and the organic oil, and stirring evenly to form a mixed oil;

[0019] The novel antioxidant is heated and dissolved, then added into the solvent oil, and quickly stirred to form an antioxidant solution;

[0020] The mixed oil, the antioxidant solution and the weighed graphite are fully mixed and stirred evenly to obtain the hot die forging release agent.

[0021] The implementation of the present invention has the following beneficial effects:

[0022] The present invention adds an organic oil with a higher ignition point to increase the ignition point of the hot die forging release agent, greatly improving its high temperature resistance, making the hot die forging release agent not easy to burn even at high temperatures, with a long service life and low loss; at the same time, a base oil with a higher viscosity is used to improve the adhesion of the hot die forging release agent, which is beneficial to extending its service life and reducing loss during use; more importantly, the present invention also adds a new antioxidant to effectively improve the oxidation resistance at high temperatures, further improving the heat resistance of the hot die forging release agent; in summary, the hot die forging release agent of the present invention can effectively separate the hot die forging product and the mold, prevent adhesion between the finished product and the mold, and fuzzing caused by poor lubrication, thereby improving product quality. At the same time, its excellent heat resistance ensures its service life and can meet the requirements of continuous production of the hot die forging process at high temperatures. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. It should be noted that the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] Under high-temperature conditions of the mold exceeding 400°C, the release agents in the prior art are prone to failure and increased usage, making them unable to meet the requirements of continuous production at high temperatures in the hot die forging process. Based on this situation, this embodiment provides a hot die forging release agent, comprising the following raw material components in preset weight portions: 20 parts by weight of organic oil, 50 parts by weight of base oil, 10 parts by weight of solvent oil, 15 parts by weight of a new antioxidant, and 5 parts by weight of graphite.

[0026] Specifically, in order to improve the adhesion of the hot die forging release agent to the inner surface of the mold and effectively isolate the material from the mold, in one possible embodiment of the present specification, a base oil with a Saybolt viscosity higher than 150SN is selected to increase the overall viscosity of the hot die forging release agent; when the hot die forging release agent is applied to the mold, the high-viscosity hot die forging release agent has greater adhesion to the surface of the mold, ensuring that the hot die forging release agent is not easy to flow, preventing the hot die forging release agent from flowing and causing the hot die forging release agent to be missing in some areas of the mold, ensuring that the hot die forging release agent is present everywhere between the material and the mold, so as to effectively isolate the material and the mold and minimize the material from sticking to the mold.

[0027] Specifically, in this embodiment, in order to improve the overall ignition point of the hot die forging release agent, an organic oil with a ignition point higher than 240°C is selected to be added, and the ignition point of the mixed oil formed after mixing with the base oil is greatly increased; in a possible embodiment of the present specification, the ignition point of the added organic oil is not lower than 400°C, so that the hot die forging release agent does not burn even under a high temperature condition of 400°C, and has excellent high temperature resistance; correspondingly, the hot die forging release agent will not cause loss in dosage due to combustion during use, which saves the hot die forging release agent on the one hand, and ensures that the product raw material or finished product and the mold are always effectively isolated by the hot die forging release agent on the other hand, and has good lubrication and isolation effects; preferably, in a possible embodiment of the present specification, the organic oil is made of an organic compound; in another possible embodiment of the present specification, the organic oil can preferably be grease, which has a high ignition point. After mixing with the base oil and other additives, the ignition point of the hot die forging release agent is higher than 400°C, which can effectively resist high temperatures and is not easy to burn.

[0028] Specifically, the new antioxidant is composed of a mixture of multiple inorganic polymer compounds; preferably, in this embodiment, 15 parts by weight of the new antioxidant adopts 5 parts by weight of polyethylene, 3 parts by weight of polypropylene, 1.7 parts by weight of epoxy resin, 1.5 parts by weight of silicone resin, 2.3 parts by weight of acrylic resin, and 1.5 parts by weight of alkyd resin; the addition of the new antioxidant can effectively prevent the hot die forging release agent from burning. Even after repeated use, the ignition point of the organic oil and the base oil is slightly reduced, causing the hot die forging release agent to burn. The antioxidant properties of the new antioxidant can further prevent the hot die forging release agent from re-burning, effectively blocking the combustion process, improving the overall high-temperature oxidation resistance of the hot die forging release agent, extending the functional effectiveness and service life of the hot die forging release agent, reducing the loss of the hot die forging release agent and the corresponding raw material cost, and avoiding the situation of multiple replenishment of the hot die forging release agent in the continuous production process, saving manpower and material resources.

[0029] Specifically, the proportion of solvent oil is in the range of 10 to 20 parts by weight. Within this range, the solvent oil mainly plays a dissolving role and can effectively dissolve a variety of inorganic polymer compounds in the new antioxidant; when the proportion of solvent oil is lower than 10 parts by weight, it may not be able to effectively dissolve a sufficient amount of inorganic polymer compounds, resulting in poor antioxidant performance; when the proportion of solvent oil is higher than 20 parts by weight, because the general ignition temperature of solvent oil is low, averaging no more than 300°C, it may reduce the heat resistance of the hot die forging release agent and cannot effectively prevent the hot die forging release agent from burning; in this embodiment, the solvent oil is preferably 10 parts by weight, which on the one hand can ensure the solubility of the new antioxidant, and on the other hand avoids lowering the overall ignition point of the hot die forging release agent and affecting the heat resistance of the hot die forging release agent.

[0030] Specifically, in order to further improve the lubrication performance of the hot die forging release agent, graphite is also added to the hot die forging release agent of this embodiment; graphite has a flaky crystal structure, good lubrication performance, and also has good electrical conductivity, thermal conductivity, wear resistance, pressure resistance, temperature resistance (temperature can be as high as 450°C) and chemical stability, so it can be widely used for lubrication in the machinery industry; when used as a lubricant, the main method is to evenly distribute the graphite particles in the oily medium to form a stable colloidal substance, which is applied to the area requiring lubrication by rubbing, dipping or spraying. And when it comes into contact with the metal surface, it not only forms a firm lubricating film, but also improves the wettability of the metal surface to other lubricants, thereby maintaining a long-term lubricating effect; and in this embodiment, the added graphite is preferably fine flake graphite, and the average particle size of the flake graphite is 3 to 10 μm. The graphite particles in the form of fine particles can easily penetrate into the tightly fitting sliding or rotating parts to play a good lubricating role, ensuring that the processed product and the mold are always separated by the hot die forging release agent, effectively avoiding the occurrence of mold sticking and hair pulling.

[0031] Specifically, in one possible embodiment of the present specification, the hot die forging release agent is a powdered or granular solid; in another possible embodiment of the present specification, the hot die forging release agent is in a powdered or granular solid state coated in the organic oil; when in use, the hot die forging release agent adheres to the inner surface of the mold, and the finished product and the metal mold are separated by the hot die forging release agent powder or particles, and the separation distance is at least the particle size of the hot die forging release agent powder or particles, thereby preventing adhesion between the finished product and the mold and fuzzing caused by poor lubrication, thereby achieving the purpose of improving the quality of the finished product; in addition, it should be noted that in order to ensure sufficiently effective lubricity, the hot die forging release agent provided in this embodiment is completely water-free to avoid emulsification and oxidation deterioration of the oily components in the hot die forging release agent, thereby destroying the oil film and reducing the lubrication effect. At the same time, it also helps to control the mold temperature to improve the quality of the finished product and extend the service life of the mold.

[0032] The hot die forging release agent is prepared by the following steps:

[0033] S101, weighing 20 parts by weight of organic oil, 50 parts by weight of base oil, 10 parts by weight of solvent oil, 15 parts by weight of new antioxidant, and 5 parts by weight of graphite according to preset weight portions;

[0034] S102, mixing the weighed base oil and organic oil, and stirring evenly to form a mixed oil;

[0035] The organic oil is an organic compound or grease.

[0036] S103, heating and dissolving the weighed novel antioxidant, then adding it to solvent oil, and rapidly stirring to form an antioxidant solution;

[0037] The novel antioxidant weighed includes 5 parts by weight of polyethylene, 3 parts by weight of polypropylene, 1.7 parts by weight of epoxy resin, 1.5 parts by weight of silicone resin, 2.3 parts by weight of acrylic resin, and 1.5 parts by weight of alkyd resin.

[0038] S104. Fully mix the mixed oil, antioxidant solution and weighed graphite, and stir evenly to obtain a hot die forging release agent.

[0039] Among them, because the new antioxidant is dissolved in solvent oil by heating, at room temperature, the hot die forging release agent obtained can be a powdery or granular solid, or a powdery or granular solid coated in the organic oil.

[0040] According to the hot die forging release agent and preparation method provided in this embodiment, the prepared hot die forging release agent can effectively isolate the product and the mold under high temperature conditions of 400°C, and there is no sticking to the mold or hair pulling phenomenon. At the same time, no signs of burning are found in the hot die forging release agent after use, and the consumption rate is low; and the service life of the hot die forging release agent with the same amount is much longer than the service life of the existing release agent, meeting the needs of continuous production of the hot die forging process at high temperature.

[0041] Example 2

[0042] This embodiment provides a hot die forging release agent, which includes the following raw material components in preset weight portions: 50 parts by weight of organic oil, 25 parts by weight of base oil, 10 parts by weight of solvent oil, 10 parts by weight of a new antioxidant, and 5 parts by weight of graphite.

[0043] Among them, 10 parts by weight of the new antioxidant prepared by mixing a variety of inorganic polymer compounds includes 2.1 parts by weight of polyethylene, 2.8 parts by weight of polypropylene, 2.7 parts by weight of silicone resin, and 2.4 parts by weight of acrylic resin.

[0044] The hot die forging release agent is prepared by the following steps:

[0045] S201, weighing 50 parts by weight of an organic compound, 25 parts by weight of a base oil, 10 parts by weight of a solvent oil, 10 parts by weight of a new antioxidant, and 5 parts by weight of graphite according to preset weight portions;

[0046] S202, mixing the weighed base oil and the organic compound, and stirring evenly to form a mixed oil;

[0047] S203, heating and dissolving the weighed novel antioxidant, then adding it to solvent oil, and rapidly stirring to form an antioxidant solution;

[0048] S204. Fully mix the mixed oil, antioxidant solution and weighed graphite, and stir evenly to obtain a hot die forging release agent.

[0049] The hot die forging release agent provided in this embodiment can effectively isolate the product and the die even under high-temperature conditions of 400°C, without any sticking or hair pulling. At the same time, no signs of burning are found in the hot die forging release agent after use, and the consumption rate is low. Moreover, the service life of the hot die forging release agent with the same dosage is much longer than that of existing release agents, meeting the needs of continuous production of the hot die forging process at high temperatures.

[0050] Example 3

[0051] This embodiment provides a hot die forging release agent, which is prepared according to the preparation method in Example 1 and includes the following raw material components in preset weight portions: 70 parts by weight of organic oil, 10 parts by weight of base oil, 10 parts by weight of solvent oil, 3 parts by weight of a new antioxidant, and 7 parts by weight of graphite.

[0052] Among them, 3 parts by weight of the new antioxidant contains 1.2 parts by weight of polypropylene and 1.8 parts by weight of alkyd resin.

[0053] The hot die forging release agent is prepared by the following steps:

[0054] S301, weighing 70 parts by weight of grease, 10 parts by weight of base oil, 10 parts by weight of solvent oil, 3 parts by weight of new antioxidant, and 7 parts by weight of graphite according to preset weight parts;

[0055] S302, mixing the weighed base oil and grease, and stirring evenly to form a mixed oil;

[0056] S303, heating and dissolving the weighed novel antioxidant, then adding it to solvent oil, and rapidly stirring to form an antioxidant solution;

[0057] S304. Fully mix the mixed oil, antioxidant solution and weighed graphite, and stir evenly to obtain a hot die forging release agent.

[0058] The hot die forging release agent provided in this embodiment can also effectively isolate the product and the mold under high temperature conditions of 400°C, without any sticking or hair pulling phenomena, ensuring the quality of the finished product and extending the service life of the mold. No signs of burning are found in the hot die forging release agent after use. It has excellent heat resistance and low consumption rate. Moreover, the service life of the hot die forging release agent with the same dosage is much longer than that of the existing release agent, meeting the needs of continuous production of the hot die forging process at high temperature.

[0059] Comparative Example 1

[0060] This comparative example differs from Example 1 in that no organic oil is added, but instead a base oil equal to the organic oil is added. The remainder of the composition is the same as in Example 1, and the preparation method of Example 1 is used. After the finished product is demolded, the hot die forging release agent prepared in this comparative example shows signs of partial combustion in most of the residual release agent in the mold. After a limited number of uses, the remaining hot die forging release agent in the mold is significantly reduced, resulting in material sticking to the mold and mold hair pulling.

[0061] Comparative Example 2

[0062] This comparative example differs from Example 1 in that no organic oil is added, and the original 150SN viscosity base oil is added instead of the base oil in Example 1. The remaining conditions are the same as in Example 1, and the preparation method of Example 1 is used. After the finished product is demolded, the hot die forging release agent prepared in this comparative example not only shows signs of burning, but also shows adhesion and roughness between the finished product and the mold in some areas inside the mold, while the corresponding areas are free of release agent. This indicates that the hot die forging release agent does not completely isolate the material from the mold.

[0063] Comparative Example 3

[0064] The difference between this comparative example and Example 1 is that no organic oil is added, and the added antioxidant is a traditional antioxidant instead of the new antioxidant in Example 1. The rest is the same as Example 1 and is prepared using the preparation method of Example 1. After the hot die forging release agent prepared in this comparative example is demolded, the residual portion in the mold shows more serious signs of burning. After multiple uses, the remaining hot die forging release agent in the mold is less than that in Comparative Example 1, and more serious large-area material sticking to the mold and mold roughening occur.

[0065] Of course, what is described above are only some embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art should understand that the present invention may be subject to various changes and improvements, and any modifications, equivalent substitutions and improvements made in accordance with the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A hot die forging release agent, characterized in that: The raw material components include the following preset weight parts: 20-70 parts by weight of organic oil, 10-50 parts by weight of base oil, 10-20 parts by weight of solvent oil, 3-15 parts by weight of a new antioxidant, and 5-35 parts by weight of graphite; the new antioxidant is a mixture of multiple inorganic polymer compounds, and the new antioxidant includes at least two of polyethylene, polypropylene, epoxy resin, silicone resin, acrylic resin, and alkyd resin; The Saybolt viscosity of the base oil is higher than 150SN; The flash point of the organic oil is not less than 400°C; The organic oil is grease.

2. A hot die forging release agent according to claim 1, characterized in that: The hot die forging release agent is in a state of being powdered or granular solid coated in the organic oil.

3. A hot die forging release agent according to claim 1, characterized in that: The graphite is fine flake graphite.

4. A hot die forging release agent according to claim 3, characterized in that: The average particle size of the graphite is 3 to 10 μm.

5. A method for preparing a hot die forging release agent, characterized in that: include According to the preset weight parts, 20 to 70 parts by weight of organic oil, 10 to 50 parts by weight of base oil, 10 to 20 parts by weight of solvent oil, 3 to 15 parts by weight of new antioxidant, and 5 to 35 parts by weight of graphite are weighed; The novel antioxidant is a mixture of multiple inorganic polymer compounds, and the novel antioxidant includes at least two of polyethylene, polypropylene, epoxy resin, silicone resin, acrylic resin, and alkyd resin; Mixing the weighed base oil and the organic oil, and stirring evenly to form a mixed oil; The novel antioxidant is heated and dissolved, then added into the solvent oil, and quickly stirred to form an antioxidant solution; The mixed oil, the antioxidant solution and the weighed graphite are fully mixed and stirred to obtain the hot die forging release agent; The Saybolt viscosity of the base oil is higher than 150SN; The flash point of the organic oil is not less than 400°C; The organic oil is grease.