Wax mold cleaning agent composition as well as preparation method and application thereof

Abstract

The invention discloses a wax mold cleaning agent composition as well as a preparation method and application thereof. The wax mold cleaning agent composition comprises the following components in percentage by weight: 10-25% of a nonionic surfactant composition, 5-18% of an etching agent, 1-5% of a dispersing agent, 0.5-5% of an impregnating compound, 5-15% of a stabilizer and the balance of water. In the process of cleaning pollutants on the surface of the wax mold by the cleaning agent composition, the surface of the wax mold can be uniformly etched, so that uniform coating of slurry after cleaning is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical cleaning, and in particular to a wax mold cleaning agent composition, a preparation method and an application thereof, and specifically to a cleaning agent composition for an efficient etching and environmentally friendly wax mold module for special alloy casting, which is a key auxiliary material in the precision casting process. Background Art

[0002] The process of investment casting is: use a mold to make a wax mold. In the process of making the wax mold, in order to effectively demold the mold, it is necessary to spray a mold release agent on the mold for making the wax mold. After the wax mold is produced, the mold release agent and other contaminants on the surface of the wax mold need to be cleaned, and a uniform etching layer is formed on the surface of the wax mold (etching is conducive to better coating of the slurry in the next step). After cleaning, the slurry is coated on the surface of the wax mold. After multiple coatings, it is dried to form a structure with a dry shell on the outside and wax on the inside (hereinafter referred to as the structure). The structure is heated and dewaxed to melt the wax mold inside and flow out to form a shell. The shell is roasted to remove all organic matter inside the shell to form a clean shell with a certain strength. Then, the alloy liquid is poured inside the shell, the alloy is cooled to form, and then the shell is dissolved in the configured solution to obtain an alloy casting.

[0003] Among them, wax mold cleaning is a key process in the investment casting shell making process. The cleaning and etching effects of the wax mold are directly related to the coating quality of the slurry, which in turn affects the quality of the finished casting. Due to the extremely stringent performance requirements of special alloy precision castings, in special alloy precision casting, special alloys also have extremely high requirements for the proportion of elements, and no other elements other than alloy components are allowed to be introduced in the entire casting process. At present, one or more salt-containing components are used in the ionic surfactants, wetting agents, and etching agents used in the wax mold cleaning agents on the market. These components cannot be completely volatilized during the roasting process and are eventually adsorbed on the mold shell. During the special alloy casting process, these impurities will enter the alloy and affect the performance of the alloy. At the same time, after market research, in order to quickly remove the release agent and oil stains on the surface of the wax mold, benzene, toluene, trichloroethylene, tetrachloroethylene, chloroform, acetone, cyclohexane and other toxic solvents are generally added to wax mold cleaning agents at home and abroad as cleaning agent raw materials, which seriously affects the health of cleaning workers and is also extremely harmful to the environment. At the same time, the water-based wax model cleaning agents on sale have almost no etching effect on the surface of the wax model during the cleaning process, or the etching effect is very weak and cannot achieve the requirement of uniform slurry coating. Summary of the invention

[0004] In view of the shortcomings of existing wax model cleaning agents, the present invention provides a wax model cleaning agent composition, and a preparation method and application thereof.

[0005] The wax mold cleaning agent composition of the present invention is an efficient etching environmentally friendly wax mold module cleaning agent that can be applied to the special alloy casting process. The surfactant selected is a non-ionic surfactant of 100% by weight, and the composition of the auxiliary agents such as the dispersant, the wetting agent, and the stabilizer does not contain any metal elements. The components of the wax mold cleaning agent of the present invention do not leave any elements other than silicon (silicon is the main element material in the slurry, so the silicon element introduced by the cleaning agent is not considered as a pollutant) on the mold shell after roasting, and will not cause pollution to the casting of the later special alloy. At the same time, the efficient and environmentally friendly etching wax mold module cleaning agent used for special alloy casting of the present invention does not contain components that are toxic to the human body, such as benzene, toluene, trichloroethylene, tetrachloroethylene, chloroform, acetone, cyclohexane, etc., and is environmentally friendly and safe for operators. And the cleaning agent of the present invention can quickly clean the pollutants on the surface of the wax mold, and can also form a uniform etching layer on the surface of the wax mold, which is conducive to the coating of the later slurry.

[0006] The technical solution of the present invention is as follows:

[0007] 1. A wax mold cleaning agent composition comprising the following components in percentage by weight:

[0008] Nonionic surfactant combination 10-25% by weight,

[0009] Etching agent 5-18 wt %,

[0010] Dispersant 1-5 wt%,

[0011] Wetting agent 0.5-5% by weight,

[0012] Stabilizer 5-15 wt %; and

[0013] The remaining amount of water;

[0014] The nonionic surfactant combination is selected from one or more of nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isopropyl alcohol polyoxyethylene ether,

[0015] The etchant is a combination of hydrogenated kerosene and dipropylene glycol dimethyl ether.

[0016] The dispersant is polyvinyl pyrrolidone,

[0017] The stabilizer is one or more of butanol, ethylene glycol and isopropanol, and

[0018] The wetting agent is selected from a combination of triisobutyl phosphate and polyether-modified silicone.

[0019] Preferably, the nonionic surfactant combination is nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isopropyl alcohol polyoxyethylene ether, and the mass ratio of nonylphenol polyoxyethylene ether: fatty alcohol polyoxyethylene ether: isopropyl alcohol polyoxyethylene ether is (1-2):(1-2):(0.5-1).

[0020] Preferably, the mass ratio of hydrogenated kerosene to dipropylene glycol dimethyl ether is (1-2):(1-5).

[0021] Preferably, the mass ratio of triisobutyl phosphate to polyether-modified silicone in the sizing agent is (1-10):(10-20).

[0022] Preferably, the stabilizer is butanol, ethylene glycol and isopropanol, and the mass ratio of butanol:ethylene glycol:isopropanol is (1-2):(1-2):(1-2).

[0023] Preferably, the weight percentage of water is 40-60 weight %.

[0024] 2. A method for preparing a wax mold cleaning agent composition, comprising the following steps:

[0025] S1-mix the nonionic surfactant combination and the stabilizer uniformly;

[0026] S2-add the etchant to the solution obtained in S1 while stirring and mix well;

[0027] S3-adding the dispersant and the wetting agent to the solution obtained in S2 while stirring, and stirring evenly; and

[0028] S4-Add the remaining amount of water to the solution obtained in S3 under stirring to prepare the wax mold cleaning agent composition.

[0029] Preferably, in steps S1, S2 and S3, the stirring speed is 200-500 rpm, and the stirring time is 2-10 minutes; and

[0030] In step S4, the remaining water is added to the solution obtained in S3 at a stirring speed of 200-500 rpm, and after stirring for 2-10 minutes, the stirring speed is increased to 1000-3000 rpm, and stirring is continued for 1-2 hours.

[0031] Preferably, the wax mold cleaning agent composition is a white milky solution.

[0032] 3. Application of the wax mold cleaning agent composition in cleaning wax molds for special alloy casting.

[0033] The beneficial effects of the present invention are as follows:

[0034] 1. The wax mold cleaning agent composition of the present invention can be used as an efficient and environmentally friendly wax mold cleaning agent for special alloy casting. It is a stable white emulsion that does not separate after being left for a long time.

[0035] 2. The high-efficiency etching and environmentally friendly wax mold cleaning agent used for special alloy casting of the present invention has good cleaning ability for residues of sacrificial release agents, semi-sacrificial release agents, and water-based release agents on the surface of wax molds, as well as pollutants such as oil stains.

[0036] 3. The high-efficiency etching and environmentally friendly wax pattern cleaning agent used for special alloy casting of the present invention has the ability to etch the surface of the wax pattern during the cleaning process to form a uniform etched surface.

[0037] 4. The present invention is a high-efficiency etching and environmentally friendly wax mold cleaning agent used in the special alloy casting process. The surfactant selected is 100% by weight of a non-ionic surfactant, and the composition of auxiliary agents such as dispersants, wetting agents, stabilizers, etc. does not contain any metal elements. Its composition does not contain any components that cannot volatilize after roasting, and will not cause composition pollution to the casting alloy.

[0038] 5. The high-efficiency etching and environmentally friendly wax mold cleaning agent used for special alloy casting of the present invention does not contain harmful components such as benzene, toluene, trichloroethylene, tetrachloroethylene, chloroform, acetone, cyclohexane, etc. DETAILED DESCRIPTION

[0039] The embodiments of the present invention are described in detail below. The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific technology or conditions are specified in the embodiments, the technology or conditions described in the literature in this area or the product instructions are used. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be obtained commercially.

[0040] In this article, special alloys refer to metal materials with special properties and uses, which are widely used in aerospace, automobile manufacturing, electronics, medical equipment and other fields. Special alloys include nickel-based, cobalt-based, iron-based high-temperature alloys, titanium alloys, etc.

[0041] The invention discloses a high-efficiency etching and environmentally friendly wax mold cleaning agent composition applicable to special alloy casting and a preparation thereof. The technical scheme comprises the following components in weight percentage: 10-25 weight% of a non-ionic surfactant combination, 5-18 weight% of an etchant, 1-5 weight% of a dispersant, 0.5-5 weight% of a wetting agent, 5-15 weight% of a stabilizer and a balance of water.

[0042] The wax mold cleaning agent composition of the present invention can be applied to the cleaning and etching of wax molds in special alloy precision casting. Special alloy castings have extremely high requirements on the element composition therein, and any non-alloy elements are not allowed to be introduced in the whole casting process. The raw materials used in the wax mold cleaning agent composition of the present invention do not involve any substances that can remain after high-temperature roasting (except silicon and its oxides). The surfactant selected in the wax mold cleaning agent composition of the present invention is 100% by weight of non-ionic surfactant, and no metal elements are contained in the composition of auxiliary agents such as dispersants, wetting agents, stabilizers, etc. The wax mold cleaning agent composition of the present invention does not contain etchants commonly used in wax mold cleaning agents on the market, such as toluene, xylene, trichloroethylene, tetrachloroethylene, chloroform, cyclohexane, acetone, etc., which are toxic to the human body. In addition, the wax mold cleaning agent composition of the present invention will also uniformly etch the surface of the wax mold in the process of cleaning the pollutants on the surface of the wax mold, which is more conducive to the uniform coating of the slurry after cleaning.

[0043] In one aspect, the present invention provides a wax mold cleaning agent composition, comprising the following components in percentage by weight:

[0044]

[0045] Preferably, the nonionic surfactant combination is selected from one or more of nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isopropyl alcohol polyoxyethylene ether.

[0046] More preferably, the nonionic surfactant combination is nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isopropyl alcohol polyoxyethylene ether, and the mass ratio of nonylphenol polyoxyethylene ether: fatty alcohol polyoxyethylene ether: isopropyl alcohol polyoxyethylene ether is (1-2):(1-2):(0.5-1).

[0047] Preferably, the weight percentage of water is 40-60 weight %.

[0048] Preferably, the etchant is a combination of hydrogenated kerosene and dipropylene glycol dimethyl ether. The mass ratio of hydrogenated kerosene to dipropylene glycol dimethyl ether can be (1-2):(1-5).

[0049] In the present invention, a synergistic combination of polyether-modified silicone and dipropylene glycol dimethyl ether is innovatively used. While polyether-modified silicone has good solubility in water, it also has good affinity for the wax surface and can be used as a strong wetting agent for the wax surface. It is one of the core raw materials of the present invention. Dipropylene glycol dimethyl ether is a good solvent with good amphiphilic properties. It has good solubility in both water and oil. It is a solubilizer for hydrogenated kerosene and polyether-modified silicone in water. After using dipropylene glycol dimethyl ether, the effective components in the wax mold cleaning agent can act more fully on the wax mold surface, playing a role in cleaning and etching. Dipropylene glycol dimethyl ether is also the core raw material of the present invention.

[0050] More preferably, the flash point of the hydrogenated kerosene may be higher than 100°C.

[0051] Preferably, the dipropylene glycol dimethyl ether added to the etchant is a solvent, an etchant, and also a solubilizer for hydrogenated kerosene. Only when the concentration of dipropylene glycol dimethyl ether is kept at a certain level, the hydrogenated kerosene will be dissolved in the system and play the role of a cleaning and etching agent.

[0052] Preferably, the dispersant is polyvinyl pyrrolidone.

[0053] Preferably, the wetting agent is selected from a combination of triisobutyl phosphate and polyether-modified silicone.

[0054] More preferably, the mass ratio of triisobutyl phosphate to polyether-modified silicone in the sizing agent may be (1-10):(10-20).

[0055] Preferably, the stabilizer may be composed of one or more of butanol, ethylene glycol, and isopropanol.

[0056] More preferably, the stabilizer is a mixture of butanol, ethylene glycol and isopropanol. The mass ratio of butanol:ethylene glycol:isopropanol can be (1-2):(1-2):(1-2).

[0057] In a second aspect, the present invention provides a method for preparing a wax mold cleaning agent composition, comprising the following steps:

[0058] S1-mixing uniformly 10-25 wt % of a nonionic surfactant combination accounting for 10-25 wt % of the total components of the wax mold cleaning agent composition and 5-18 wt % of a stabilizer accounting for 5-18 wt % of the total components;

[0059] S2-add 5-18 wt% of the etchant to the solution obtained in S1 under stirring and mix well;

[0060] S3-adding 1-5 wt% of the dispersant and 0.5-5 wt% of the wetting agent to the solution obtained in S2 under stirring, and stirring evenly; and

[0061] S4-Add the remaining amount of water to the solution obtained in S3 under stirring to prepare the wax mold cleaning agent composition.

[0062] Preferably, in steps S1, S2 and S3, the stirring speed is 200-500 rpm, and the stirring time is 2-10 minutes.

[0063] Preferably, in step S4, the remaining water is added to the solution obtained in S3 at a stirring speed of 200-500 rpm, and after stirring for 2-10 minutes, the stirring speed is increased to 1000-3000 rpm, and stirring is continued for 1-2 hours.

[0064] The wax mold cleaning agent composition prepared by the above method is a white milky solution.

[0065] In one embodiment, the present invention provides a method for preparing the above-mentioned high-efficiency etching and environmentally friendly wax mold cleaning agent for special alloy casting, comprising the following steps:

[0066] S11; the combination of 10 wt%-25 wt% of the nonionic surfactant in accordance with the weight ratio of the total components and 5-18 wt% of the total weight ratio of the total components are mixed evenly, and stirred at a stirring speed of 200-500 rpm for 2 minutes;

[0067] S22; the etchant accounting for 5-18% by weight of the total weight of the total components is evenly added to the solution obtained in S11 under stirring, and stirred for 2 minutes at a stirring speed of 200-500rpm;

[0068] S33; 1-5 wt% of the total weight of the total components and 0.5-5 wt% of the total weight of the wetting agent are uniformly added to the solution obtained in S22 under stirring, and stirred for 2 minutes at a stirring speed of 200-500 rpm; and

[0069] S44; 40-60% by weight of the total weight of the total components of water is evenly added to the solution obtained in S33 at a stirring speed of 200-500rpm. After the addition, the stirring speed is increased to 1000-3000rpm and stirred for 1-2 hours to obtain a white milky solution.

[0070] In a third aspect, the present invention provides the use of a wax pattern cleaning agent composition in cleaning wax patterns for special alloy castings. In particular, the wax pattern cleaning agent composition of the present invention can be used as a highly efficient and environmentally friendly wax pattern cleaning agent for special alloy castings.

[0071] The wax mold cleaning agent composition prepared by the present invention can meet the indicators shown in Table 1.

[0072] Table 1 - Indicators of the wax mold cleaning agent composition of the present invention

[0073] project index Appearance Even white emulsion density <![CDATA[1.0±0.2g / cm 3 ]]> pH 6.5-7.5 Solid content >40 wt% toxicity None (not edible) Cleaning capacity Good cleaning effect on silicone oil and grease

[0074] The invention is further described in conjunction with the following specific examples. It should be understood that the specific examples described herein are only used to explain the invention and are not used to limit the invention.

[0075] The sources and models of the main components used in the examples are as follows:

[0076] Nonylphenol polyoxyethylene ether was purchased from Hamm, Germany, model number is NPE-10

[0077] Fatty alcohol polyoxyethylene ether was purchased from Guangzhou Suixin Chemical, model AEO-03

[0078] Isopropyl alcohol polyoxyethylene ether was purchased from Nantong Kehui Chemical, model number AC-1800

[0079] Hydrogenated kerosene was purchased from Maoming Hongtai Petrochemical Co., Ltd., model D80

[0080] Dipropylene glycol dimethyl ether was purchased from Guangzhou Qixu Chemical Industry, model DMM

[0081] Polyvinyl pyrrolidone was purchased from Jinan Lingyun Chemical Industry, model PVP K30

[0082] Triisobutyl phosphate was purchased from Guangzhou Wengjiang Chemical Reagent Co., Ltd., model number: TIBP 126-71-6

[0083] Polyether modified silicone was purchased from Nanjing Dahai New Materials Co., Ltd., model TG 450

[0084] Butanol, ethylene glycol and isopropanol were purchased from Guangzhou Wengjiang Chemical Reagent

[0085] Embodiment 1:

[0086] This embodiment provides a highly efficient etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting, comprising the components in the weight percentages shown in the following Table 2;

[0087] Table 2

[0088]

[0089] The preparation method of the high-efficiency etching and environmentally friendly wax mold cleaning agent composition used in special alloy casting comprises the following steps:

[0090] The first step: mix 20 wt % of a nonionic surfactant combination (consisting of 8 wt % of nonylphenol polyoxyethylene ether, 8 wt % of fatty alcohol polyoxyethylene ether and 4 wt % of isopropanol polyoxyethylene ether) with 10 wt % of a stabilizer (consisting of 2 wt % of butanol, 4 wt % of ethylene glycol and 4 wt % of isopropanol) accounting for 20 wt % of the total components, mix well, and stir for 2 minutes at a stirring speed of 200 rpm.

[0091] The second step: 15 wt% of the total amount of the etchant (consisting of 9 wt% of dipropylene glycol dimethyl ether and 6 wt% of hydrogenated kerosene) is evenly added to the solution obtained in the first step under stirring, and stirred at a stirring speed of 200 rpm for 2 minutes.

[0092] The third step: 3 wt% of the dispersant (i.e., 3 wt% of polyvinyl pyrrolidone) and 5 wt% of the wetting agent (composed of 1 wt% of triisobutyl phosphate and 4 wt% of polyether-modified silicone) accounting for 3 wt% of the total components are uniformly added to the solution obtained in the second step while stirring, and stirred at a stirring speed of 200 rpm for 2 minutes.

[0093] The fourth step; accounting for 47% by weight of the total amount of water, at a stirring speed of 200rpm was evenly added to the solution obtained in the third step, after the addition, the stirring speed was increased to 1500rpm, stirring for 1.5 hours to obtain a white milky solution.

[0094] The composition ratio in Example 1 forms a high-efficiency etching and environmentally friendly wax mold cleaning agent composition for special alloy casting, which is a high-efficiency wax mold cleaning and etching system. It has a good cleaning effect on pollutants (release agents and grease) on the surface of the wax mold, and also has a fast and uniform etching effect on the surface of the wax mold. The cleaning and etching time of the wax mold can be controlled to be completed within 15 seconds.

[0095] Example 2

[0096] This embodiment provides a highly efficient etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting, comprising the components in weight percentages shown in Table 3:

[0097] Table 3

[0098]

[0099]

[0100] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is prepared according to the weight percentage shown in Table 3.

[0101] Example 3

[0102] This embodiment provides a highly efficient and environmentally friendly wax pattern cleaning agent composition for special alloy casting, including the components in weight percentage shown in Table 4:

[0103] Table 4

[0104]

[0105] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is formulated according to the weight percentage shown in Table 4.

[0106] Example 4

[0107] This embodiment provides a highly efficient and environmentally friendly wax pattern cleaning agent composition for special alloy casting, including the components in weight percentage shown in Table 5:

[0108] Table 5

[0109]

[0110] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is prepared according to the weight percentage shown in Table 5.

[0111] Example 5

[0112] This embodiment provides a highly efficient and environmentally friendly wax pattern cleaning agent composition for special alloy casting, including the components in weight percentage shown in Table 6:

[0113] Table 6

[0114]

[0115]

[0116] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is formulated according to the weight percentage shown in Table 6.

[0117] Example 6

[0118] This embodiment provides a highly efficient and environmentally friendly wax pattern cleaning agent composition for special alloy casting, including the components in weight percentage shown in Table 7:

[0119] Table 7

[0120]

[0121] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is formulated according to the weight percentage shown in Table 6.

[0122] Example 7

[0123] This embodiment provides a highly efficient etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting, including the components in weight percentage shown in Table 8:

[0124] Table 8

[0125]

[0126] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is formulated according to the weight percentage shown in Table 8.

[0127] Example 8

[0128] This embodiment provides a highly efficient and environmentally friendly wax pattern cleaning agent composition for special alloy casting, including the components in weight percentage shown in Table 9:

[0129] Table 9

[0130]

[0131]

[0132] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is formulated according to the weight percentage shown in Table 9.

[0133] Example 9

[0134] This embodiment provides a highly efficient and environmentally friendly wax pattern cleaning agent composition for special alloy casting, including the components in weight percentage shown in Table 10:

[0135] Table 10

[0136]

[0137]

[0138] The high-efficiency etching and environmentally friendly wax pattern cleaning agent composition for special alloy casting of this embodiment is prepared in substantially the same manner as in Example 1, except that each component is formulated according to the weight percentage shown in Table 10.

[0139] Comparative Examples 1-5

[0140] The cleaning agent compositions of Comparative Examples 1-5 were prepared in substantially the same manner as in Example 1, except that the compositions of each comparative example were configured according to the weight percentages shown in Table 12.

[0141] Table 12

[0142]

[0143] The wax model used in the test is a special cylindrical casting wax obtained by hot melt injection molding. During injection molding, the mold surface is sprayed with a release agent. After demolding, the surface of the wax mold injection molded part has contaminants from the demolding machine and the surface is smooth. Such a wax model is directly immersed in the slurry, and the slurry hanging effect on the surface of the wax mold is particularly poor, generally only 20-30%. A cleaning agent is needed to remove contaminants such as the demolding machine oil on the surface of the wax mold, and form micro-etching on the surface to improve the surface energy of the wax mold and improve the adhesion of the slurry on the surface of the wax mold.

[0144] cleaning, casting and testing processes;

[0145] After the cleaning agent is prepared, transfer it to the fixed scale line position in the beaker, immerse the mold wax stick in the cleaning agent, and determine whether to shake the mold wax stick according to the situation. Take it out after immersion for a fixed time, and observe the coverage rate of the cleaning agent on the surface of the mold wax stick. The higher the coverage rate, the better the wetting effect of the cleaning agent on the mold wax. Use clean water to clean the cleaning agent on the surface of the mold wax. After rinsing, blow it dry with compressed air. Observe the matte condition of the wax stick surface. The matte covered area on the surface of the mold wax is the etching area, and the area that does not reach the matte state is not etched. Clean the etched wax mold and immerse it in ceramic slurry. After the ceramic slurry shell is formed on the surface of the wax mold, heat it. During the heating process, the wax melts and the ceramic hardens to form a ceramic mold. The alloy liquid is poured into the mold. After the alloy liquid is cooled and formed, the mold and the alloy casting are immersed in an alkaline solution to remove the mold to form an independent casting alloy part. Perform SEM-EDS test on the surface of the alloy part to analyze the element composition of the alloy surface.

[0146] Etching uniformity; visually observe and calculate the area of ​​the matte area on the cleaned and etched casting wax stick, let it be S1; calculate the cleaned area of ​​the casting wax stick, let it be S2

[0147] The coverage area of ​​the slurry is S1

[0148] Ceramic slurry coating rate = S1 / S2

[0149] The minimum resolution of the coating rate of ceramic slurry is 10%, and the settlement result is rounded off to get a ten-digit integer percentage.

[0150] Coating rate: Visually observe and calculate the coverage area of ​​the ceramic slurry on the surface of the casting wax stick. The coverage area of ​​the ceramic slurry is S3.

[0151] Ceramic slurry coating rate = S3 / S2

[0152] The minimum resolution of the coating rate of the ceramic slurry is 10%, and the calculation result is rounded off to obtain a ten-digit integer percentage.

[0153] Test the non-metallic alloy content on the casting surface; use SEM-EDS to analyze the element content on the casting surface, scan the surface element composition gradually, and calculate the content distribution of the metal on the alloy surface.

[0154] The results are shown in Table 13.

[0155] Table 13

[0156]

[0157] Example 1 is a preferred formula, and the cleaning speed, etching uniformity, etching speed and wax model coating rate after cleaning are very good. In Example 2, the amount of hydrogenated kerosene is reduced. Hydrogenated kerosene is the main component of cleaning and etching, so when the amount of hydrogenated kerosene is reduced, the cleaning speed and etching speed are reduced. In Example 3, the amount of polyether-modified silicone is reduced. Polyether-modified silicone is an efficient wetting agent on the surface of the wax mold, which can allow the cleaning agent and the etching agent to play a better role on the surface of the wax mold. The amount of the wetting agent is reduced, and the cleaning speed and etching uniformity will be affected. In Example 4, the amount of dipropylene glycol dimethyl ether is reduced. Dipropylene glycol dimethyl ether is an etchant, and it is also a solubilizer for hydrogenated kerosene and other organic components in water. Without a sufficient amount of dipropylene glycol dimethyl ether dissolved in water, the effective ingredients in the water phase will decrease, resulting in a decrease in cleaning speed, etching speed and etching uniformity.

[0158] Examples 5-9 adjusted the content of each component to be the lower limit or upper limit of each component, respectively. The results showed that the cleaning speed, etching uniformity, etching speed and wax pattern coating rate after cleaning were all affected to varying degrees.

[0159] In the present invention, polyether-modified silicone and dipropylene glycol dimethyl ether are innovatively used, wherein the polyether-modified silicone has excellent solubility in water and also has good affinity for the wax surface, and can be used as a strong wetting agent for the wax surface, and is one of the core raw materials of the present invention. Dipropylene glycol dimethyl ether is a good solvent with good amphiphilic properties, and has good solubility in both water and oil, and is a solubilizing agent for hydrogenated kerosene and polyether-modified silicone in water. After using dipropylene glycol dimethyl ether, the effective components in the wax mold cleaning agent can act more fully on the wax mold surface, and play a role in cleaning and etching. Dipropylene glycol dimethyl ether is also the core raw material of the present invention.

[0160] In Comparative Example 1, 20% of the mass fraction of the ionic surfactant sodium benzenesulfonate is used to replace the heavy nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isopropyl alcohol polyoxyethylene ether in Example 1, and the other components remain unchanged to form a wax mold cleaning agent, and the wax mold is cleaned and etched. The cleaning time is 10 seconds, and a uniform matte etching area is formed on the surface of the wax mold, and the total etching area is 100% of the total area of ​​the casting wax stick cleaned by the cleaning agent. The cleaned casting wax stick is immersed in the slurry for 5 seconds, and the surface coating slurry area reaches 100%. The wax mold treated with the cleaning agent is cast to obtain a casting, and the surface of the casting is analyzed using SEM-EDS. No sodium ions are detected on the surface of the casting obtained after using the cleaning agent of Example 1, and 0.5% by weight of sodium elements are detected on the surface of the casting obtained after using the cleaning agent of Comparative Example 1.

[0161] In Comparative Example 2, the amount of polyether-modified silicone was adjusted to 0%, and the weight proportions of the other components remained unchanged to form a cleaning agent, and the wax model was cleaned and etched. After the cleaning time was 10 seconds, an uneven block matte etching area was formed on the surface of the wax model, and the etching area was 40% of the total area of ​​the cleaned casting wax stick. The cleaned and etched wax model was immersed in the slurry for 5 seconds, and the surface slurry coating area was 50% of the total area of ​​the cleaned casting wax stick.

[0162] In Comparative Example 3, the amount of dipropylene glycol dimethyl ether was adjusted to 0%, and the weight proportions of the other components remained unchanged to form a cleaning agent, and the wax model was cleaned and etched. The cleaning and etching capabilities of the cleaning agent were completely deteriorated. After cleaning for 10 seconds, the surface etching was not completely formed. After the cleaning time was extended to 60 seconds, the etched area on the surface of the wax model was 50% of the total area of ​​the cleaned casting wax stick. The wax model after cleaning and etching was immersed in the slurry for 5 seconds, and the coating rate of the slurry on the surface of the wax model was 40% of the total area of ​​the cleaned casting wax stick.

[0163] In Comparative Example 4, the weight fraction of hydrogenated kerosene was adjusted to 0%, and the weight fractions of the other components remained unchanged to form a cleaning agent, and the cleaning and etching capabilities of the cleaning agent were completely deteriorated. After cleaning for 10 seconds, the surface etching was not completely formed. After the cleaning time was extended to 60 seconds, the etched area on the wax mold surface was 0% of the total area of ​​the cleaned casting wax stick. The wax mold after cleaning and etching was immersed in the slurry for 5 seconds, and the coating rate of the slurry on the wax mold surface was 30% of the total area of ​​the cleaned casting wax stick.

[0164] In Comparative Example 5, 6% by weight of hydrogenated kerosene was replaced with 6% by weight of dehydrogenated kerosene, and the wax mold was cleaned and etched. After the cleaning time was 80 seconds, an uneven block matte etched area was formed on the surface of the wax mold, and the etched area was 40% of the total area of ​​the cleaned casting wax stick. The cleaned and etched wax mold was immersed in the slurry for 5 seconds, and the surface slurry coating area was 10% of the total area of ​​the cleaned casting wax stick.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Any changes or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A wax mold cleaning agent composition, characterized in that Contains the following components in weight percentage: Nonionic surfactant combination 10-25% by weight, Etching agent 5-18 wt %, Dispersant 1-5 wt%, Wetting agent 0.5-5% by weight, Stabilizer 5-15 wt %; and The remaining amount of water; The nonionic surfactant combination is selected from at least two of nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isopropyl alcohol polyoxyethylene ether, The etchant is a combination of hydrogenated kerosene and dipropylene glycol dimethyl ether. The dispersant is polyvinyl pyrrolidone, The stabilizer is one or more of butanol, ethylene glycol and isopropanol, and The wetting agent is selected from a combination of triisobutyl phosphate and polyether-modified silicone.

2. The wax mold cleaning agent composition according to claim 1, characterized in that: The nonionic surfactant combination is nonylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and isopropyl alcohol polyoxyethylene ether, and the mass ratio of nonylphenol polyoxyethylene ether: fatty alcohol polyoxyethylene ether: isopropyl alcohol polyoxyethylene ether is (1-2):(1-2):(0.5-1).

3. The wax mold cleaning agent composition according to claim 1, characterized in that: The mass ratio of hydrogenated kerosene to dipropylene glycol dimethyl ether is (1-2):(1-5).

4. The wax mold cleaning composition according to claim 1, characterized in that: The mass ratio of triisobutyl phosphate to polyether-modified silicone in the sizing agent is (1-10):(10-20).

5. The wax mold cleaning composition according to claim 1, characterized in that: The stabilizer is butanol, ethylene glycol and isopropanol, and the mass ratio of butanol:ethylene glycol:isopropanol is (1-2):(1-2):(1-2).

6. The wax mold cleaning composition according to claim 1, characterized in that: The weight percentage of water is 40-60 weight %.

7. A method for preparing the wax mold cleaning agent composition according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1-mix the nonionic surfactant combination and the stabilizer uniformly; S2-add the etchant to the solution obtained in S1 while stirring and mix well; S3-adding the dispersant and the wetting agent to the solution obtained in S2 while stirring, and stirring evenly; and S4-Add the remaining amount of water to the solution obtained in S3 under stirring to prepare the wax mold cleaning agent composition.

8. The preparation method according to claim 7, characterized in that: In steps S1, S2 and S3, the stirring speed is 200-500 rpm and the stirring time is 2-10 minutes; and In step S4, the remaining water is added to the solution obtained in S3 at a stirring speed of 200-500 rpm, and after stirring for 2-10 minutes, the stirring speed is increased to 1000-3000 rpm, and stirring is continued for 1-2 hours.

9. The preparation method according to claim 7 or 8, characterized in that: The prepared wax mold cleaning agent composition is a white milky solution.

10. Use of the wax pattern cleaning agent composition according to any one of claims 1 to 6 in cleaning wax patterns for special alloy casting.

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