WO2003006700A1 - Cocatalyseur de traitement thermique d'atmosphere, procede pour son application, procede de traitement thermique et atmosphere thermotraitee a l'aide de ce cocatalyseur - Google Patents
Cocatalyseur de traitement thermique d'atmosphere, procede pour son application, procede de traitement thermique et atmosphere thermotraitee a l'aide de ce cocatalyseur Download PDFInfo
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- WO2003006700A1 WO2003006700A1 PCT/CN2002/000486 CN0200486W WO03006700A1 WO 2003006700 A1 WO2003006700 A1 WO 2003006700A1 CN 0200486 W CN0200486 W CN 0200486W WO 03006700 A1 WO03006700 A1 WO 03006700A1
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- atmosphere
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
Definitions
- Atmospheric heat treatment aid its using method
- the invention relates to an atmospheric heat treatment assistant and a method for using the same. More specifically, the auxiliary agent is dispersed in the form of a gaseous or fine dispersion such as fine dust in a raw material and an atmosphere in a heat treatment equipment or a heat treatment gas-generating equipment, or it can release a substance having the same function to be dispersed in the atmosphere Raw materials and atmosphere.
- the present invention also relates to various methods for heat treatment using the method and the auxiliary agent. Background technique
- the heat treatment atmosphere generally refers to the heat-protection atmosphere and the chemical heat-treatment atmosphere.
- Almost all carbon-containing compounds can be cracked or reacted with water or air at high temperatures to generate a heat-treated atmosphere.
- methanol, ethanol, n-butanol, isopropanol, propane, ethyl acetate, benzene, toluene, xylene, kerosene, diesel, charcoal, activated carbon, propane gas, butane gas, natural gas, gas, etc. can be used as Atmosphere raw material for heat treatment.
- the role of carbon-containing compounds when used as raw materials in a heat treatment atmosphere is consistent, that is, to provide a certain amount of carbon to be cracked at high temperatures or to react with water or air at high temperatures to produce H 2 , N 2 , CO and a small amount
- the heat treatment atmosphere of gas components such as CH4, C0 2 , ⁇ 2 0, ⁇ 3 ⁇ 4, etc., so one raw material can be substituted for another raw material according to the needs in production.
- an atmosphere raw material or an atmosphere raw material is usually introduced into a heat treatment equipment together with air, water, methanol, etc., and a heat treatment process is used to generate a heat treatment atmosphere.
- a heat treatment process is used to generate a heat treatment atmosphere.
- Many domestic and foreign heat treatment companies and heat treatment equipment manufacturers have adopted this method.
- the above method has the advantage of low investment in disposable equipment, but due to the It is necessary to consider both the workpiece and the conditions of the heat treatment equipment itself, so it is not possible to use a higher process temperature. In addition, for a long time, people have not found a suitable method for using catalysts under such equipment conditions. Therefore, when using this method, because the process temperature is relatively low and there is no catalyst, there is generally insufficient atmospheric raw material cracking and carbon black. And other issues have brought many restrictions and negative effects to production and production control.
- reducing carbon black is always the pursuit of heat treatment. Because the reduction of carbon black can bring a lot of convenience to production and production control, especially when chemical heat treatment carburizing and carbonitriding, it is generally hoped that high carbon potential control can be used to increase the penetration rate, improve production efficiency, or The high carbon potential reduces the process temperature to improve the heat treatment quality level of the product, but these desires are difficult to achieve due to the influence of carbon black (carbon black is more easily produced under high carbon potential).
- the purpose of the present invention is to find a method for using a catalyst (also called an auxiliary) for a heat treatment atmosphere that is not affected by catalyst aging, poisoning, and carbon black, and a catalyst (also called an auxiliary) composition so that By using this method and composition, it can catalyze the formation of the required atmosphere in the raw material of heat treatment atmosphere, activate the atmosphere, and reduce carbon black, successfully realize the heating of carbon black-free protective atmosphere, achieve high carbon potential chemical heat treatment carburizing, carbon nitrogen Co-infiltration and low-temperature carburizing and carbonitriding to improve heat treatment production efficiency, reduce production costs, improve workpiece heat treatment quality, and improve stability of heat treatment process control.
- One application method of the present invention is to dissolve or disperse the auxiliary agent into the raw material and atmosphere of the heat treatment atmosphere, and disperse the auxiliary agent in the form of gaseous or fine dispersion such as fine dust in the heat treatment equipment or heat treatment gas-making equipment.
- the auxiliary agent can be directly or indirectly dissolved or dispersed in the raw material and atmosphere of the heat treatment atmosphere, so that the auxiliary agent is in a gaseous state in a heat treatment equipment or a heat treatment gas-making equipment.
- fine dispersion such as fine dust
- dispersed in the atmosphere raw material and / or the atmosphere so as to achieve the maximum area contact between the additive and the atmosphere raw material and the atmosphere, thereby exerting the maximum catalytic and activation capacity of the additive.
- the auxiliary agent in the present invention refers to such substances that have a catalytic effect on the formation of the required heat treatment atmosphere of the raw materials of the atmosphere under the heat treatment process conditions, and have an activating effect on the atmosphere. Or it is a substance which can release the same functional substance as described above under the conditions of heat treatment process.
- the "fine dispersion” refers to fine particles or droplets and the like that can be suspended in a heat treatment atmosphere for a sufficient time, wherein those skilled in the art can understand that "a sufficient time” can be
- the reaction described above plays a significant catalytic role, or a time comparable to the actual heat treatment time.
- a processing atmosphere additive is provided, and when the additive is in a heat treatment device or a heat treatment gas generating device, it has the form of a gaseous or fine dispersion such as fine dust, and is dispersed in the atmosphere raw material and / Or atmosphere.
- the auxiliary agent is in the form of a gaseous or fine dispersion, and is directly dispersed in a raw material or a heat treatment atmosphere, or the auxiliary agent is dissolved or dispersed into one or more of the carrier substances.
- the present invention does not specifically limit the atmospheric raw materials, and it may be any one or more of the commonly used atmospheric raw materials, as long as the auxiliary agent is in a heat treatment process condition, in a heat treatment equipment or a heat treatment gas production equipment It is sufficient to have a dispersed form of a gaseous or fine dispersion in the atmosphere raw material and / or the atmosphere.
- the heat treatment atmospheric raw materials in the present invention refer to all known atmospheric raw materials, such as: methanol, ethanol, n-butanol, isopropanol, xylene, toluene, benzene, acetone, ethyl acetate, kerosene, methane, ethane, Any one or more of propane, butane, RX gas, natural gas, gas, nitrogen, etc., or water or air.
- the auxiliary agent is directly dissolved and dispersed in a raw material of a heat treatment atmosphere or a heat treatment atmosphere, and is introduced into a heat treatment equipment or a heat treatment gas-making equipment.
- a mixture is prepared by dissolving and dispersing the auxiliary agent in advance in a substance that can be used as a raw material for a heat treatment atmosphere (it is sometimes also referred to as a carrier substance), such as an auxiliary solution.
- a carrier substance such as an auxiliary solution.
- the auxiliary agent is selected from the group consisting of: a metal element compound that accounts for 0.003-0.03% by weight, preferably 0.003-0. 015% by weight in a heat-treated atmosphere raw material or atmosphere; 1-4% by weight, preferably 0. 1-1 in the heat-treatment atmosphere of the raw material or the atmosphere, preferably occupying 0.1 to 2% by weight of the nitrogen-containing compound; % Halogen compound. Or any combination of the above.
- the metal element compound may be selected from, for example, any one or a combination of cobalt naphthenate, manganese naphthenate, nickel nitrate, manganese nitrate, ferrocene, and a ferrocene derivative, preferably ferrocene and / Or its ferrocene derivative.
- the above group 3 ⁇ 4 element compound may be selected from, for example, chlorobenzene, trichlorobenzene, chlorotoluene, nitrochlorobenzene, trichloroethylene, tribromomethane, iodine, iodinated oil, methyl iodide, freon, tetrafluoroethylene, and the like Any one or a combination thereof is preferably chlorobenzene, trichlorobenzene, chlorotoluene, nitrochlorobenzene, or a combination thereof.
- the nitrogen-containing compound may be selected from, for example, p-aminoazobenzene hydrochloride, nitrobenzene, p-toluene diisocyanate, nitrochlorobenzene, nitrobenzene, trinitrobenzene, melamine, melamine, Any one or a combination of dicyandiamide, guanidine nitrate, mesophyll, pyridine, pyrazole, pyrazine, etc., preferably p-aminoazobenzene hydrochloride, nitrobenzene, toluene diisocyanate, nitrochlorobenzene Or any combination thereof, nitrobenzene, trinitrobenzene, guanidine nitrate, black gold and the like.
- a rare earth lanthanum or cerium compound in a heat-treated atmosphere or a raw material, 0.03-3% by weight of a rare earth lanthanum or cerium compound can also be added at the same time, such as (but not limited to): cerium naphthenate, naphthenic Any one or a combination of lanthanum acid, cerium nitrate, lanthanum nitrate, lanthanum chloride, cerium chloride, lanthanum fluoride, cerium fluoride, lanthanum acetate, cerium acetate, etc., preferably lanthanum acetate, cerium acetate, lanthanum oxide, Cerium oxide or a combination thereof because they are not corrosive in the atmosphere.
- cerium naphthenate naphthenic Any one or a combination of lanthanum acid, cerium nitrate, lanthanum nitrate, lanthanum chloride, cerium chloride, lanthanum fluoride, cerium fluor
- any one or more of the above-mentioned four auxiliary agents are used in different amounts, respectively.
- Another object of the present invention is to provide an atmosphere heat treatment method for a metal material, which is performed in an active atmosphere including an auxiliary agent or a release thereof, and the auxiliary agent is dispersed in the gaseous phase or a fine dispersion in the form of a dispersion. Atmosphere.
- the auxiliary agent is in the form of a fine dispersion such as fine dust, and can be directly dispersed into the heat treatment atmosphere raw material or the heat treatment atmosphere, or the auxiliary agent is previously dissolved and dispersed in a certain kind.
- a mixture such as an auxiliary solution can be made from a substance that can be used as a raw material for a heat treatment atmosphere, and when used, the mixture such as an auxiliary solution is added to the raw material for the heat treatment atmosphere or the mixture such as the auxiliary solution and the raw material for the heat treatment atmosphere are passed into a heat treatment equipment or Heat treatment in gas generating equipment.
- the aforementioned auxiliary agent is used.
- carburizing or carbonitriding is performed at a carbon potential that is significantly higher than when the adjuvant is not used, preferably at a carbon potential of 0.25, more preferably at 0.15. Carburizing, or carburizing or carbonitriding at a significantly lower temperature than when the adjuvant is not used, or carburizing or carburizing at a significantly shorter time than when the adjuvant is not used Carbonitriding.
- the workpiece is heat-treated in a protective atmosphere.
- the method is carried out in an active atmosphere comprising an adjuvant or its release, said adjuvant being dispersed in said atmosphere in the form of a gas phase or a finely divided dispersion.
- the atmosphere also includes heat treatment equipment or heat treatment gas-generating equipment, which is dispersed in a gaseous or fine suspension such as fine dust (which can be suspended for a long time) in the atmosphere. Atmosphere Auxiliaries and their releases that catalyze the desired atmosphere and activate the atmosphere.
- the present invention also provides a method for increasing the carbon potential of the heat treatment atmosphere without increasing carbon black, which is characterized in that any one or more of the above-mentioned additives are added to the heat treatment atmosphere or its manufacturing raw materials.
- the present invention also provides a method for heat treatment of carburizing, carbonitriding, or nitrocarburizing, which is characterized in that any one or more of the above-mentioned additives are added to the heat treatment atmosphere or its manufacturing raw materials, During carbonitriding or nitrocarburizing, an appropriate amount of ammonia gas can also be introduced.
- new auxiliaries continue to enter the catalytic environment and atmosphere along with the heat treatment atmosphere raw materials to participate in the reaction, so that the problems of catalyst aging, poisoning, and the effects of carbon black are completely avoided.
- the auxiliary agent after the auxiliary agent enters the equipment, it will be fully mixed with the atmosphere raw materials or atmosphere through the original atmosphere circulation system of the equipment, so as to achieve catalysis with the maximum contact area.
- the above direct method includes (but is not limited to) dispersing the auxiliary agent into the raw material or / and atmosphere of the heat treatment atmosphere through various direct means, for example:
- auxiliary agent Pass the auxiliary agent through a simple vaporization or atomization device. After the vaporization or atomization, it is passed into the heat treatment equipment or heat treatment gas making equipment with the atmospheric raw materials to participate in the reaction.
- the above indirect methods include (but are not limited to) dispersing the auxiliary agent into the raw material or / and atmosphere of the heat treatment atmosphere through various indirect methods, for example:
- a carrier substance that does not negatively affect the heat treatment atmosphere or process such as: methanol, ethanol, benzene, toluene, xylene, kerosene, diesel, ethanol, n-butanol, isopropanol, propane, ethyl acetate , Propane gas, butane gas, RX gas, gas, nitrogen, etc., or one or more of them, or water or air is added to dissolve or disperse the auxiliary agent in it After and after the atmosphere and raw materials into the equipment.
- a carrier substance that does not negatively affect the heat treatment atmosphere or process such as: methanol, ethanol, benzene, toluene, xylene, kerosene, diesel, ethanol, n-butanol, isopropanol, propane, ethyl acetate , Propane gas, butane gas, RX gas, gas, nitrogen, etc., or one or more of them, or water or air is added to dissolve
- the auxiliary agent after the auxiliary agent enters the equipment, it will be fully mixed with the atmosphere raw materials or atmosphere through the original atmosphere circulation system of the equipment, so as to achieve catalysis with the maximum contact area.
- the auxiliary used in the present invention mainly includes the following four types:
- All materials that have a catalytic effect on the formation of the required heat treatment atmosphere of the raw materials of the atmosphere such as those in the metal element compounds: cobalt naphthenate, manganese naphthenate, nickel nitrate, manganese nitrate, ferrocene and ferrocene derivatives (Such as: tert-butyl ferrocene, acetyl ferrocene, ferrocene sea bream, ferrocene formic acid, butyl ferrocene, etc.), etc., preferably ferrocene And ferrocene derivatives.
- the additive accounts for 0.003 to 0.03% by weight in the atmosphere or its manufacturing raw materials, preferably 0.003 to 0.015% by weight.
- Halo element compounds such as chlorobenzene, trichlorobenzene, chlorotoluene, nitrochlorobenzene, trichlorobenzene Any one or more of vinyl chloride, tribromomethane, iodine, iodinated oil, methyl iodide, Freon, tetrafluoroethylene and the like, and chlorobenzene, trichlorobenzene, chlorotoluene, and nitrochlorobenzene are preferred.
- the halogen element ions released by high-temperature element compounds at high temperatures and the corrosive effect of hydrogen halides generated by their combination with hydrogen in the atmosphere can activate the surface of the workpiece and increase the phase interface reaction rate of chemical heat treatment; lower amounts are preferred to reduce 3 ⁇ 4
- the corrosion effect of hydrogen hydride is controlled to a reasonable limit. (Some of the above-mentioned substances are also used in the prior art, but their large amounts will affect the signal measurement of the oxygen sensor of the carbon potential sensor, and the application is very limited)
- Nitrogen-containing compounds that account for 1-10% by weight in the atmosphere or its raw materials, preferably 0.1-2% by weight, such as: p-aminoazobenzene hydrochloride, nitrochlorobenzene, nitrobenzene, Any one or more of trinitrobenzene, melamine, cyanuric acid, dicyandiamide, guanidine nitrate, nitrobenzyl, toluene diisocyanate, mesophyll, pyridine, pyrazole, pyrazine, etc., preferably P-Aminoazobenzene hydrochloride, nitrobenzene, p-toluene diisocyanate, nitrochlorobenzene, nitrobenzene, trinitrobenzene, guanidine nitrate, oxandrol. Carburizing and nitrocarburizing during chemical heat treatment During infiltration or carbonitriding, the active nitrogen atoms released by the auxiliary agent under the conditions of the heat
- rare earth lanthanum or cerium compounds can also be added at the same time, such as: cerium naphthenate, lanthanum naphthenate , Cerium nitrate, lanthanum nitrate, lanthanum chloride, cerium chloride, lanthanum fluoride, cerium fluoride, lanthanum acetate, cerium acetate, lanthanum oxide, cerium oxide, and the like.
- the invention is suitable for the production and heat treatment production of a heat treatment atmosphere composed of H 2 , N 2 , CO and a small amount of C, C 0 2 , H 2 0, NH 4 and other gas components generated by any raw material route.
- any one of the four groups of auxiliaries of the present invention is equivalent to each other in use function.
- any group can be used alone or in combination.
- a metal element compound should be mainly selected.
- the gas production of raw materials in the heat treatment atmosphere can be increased, carbon black can be reduced, the process temperature during chemical heat treatment in the heat treatment atmosphere can be reduced, and the chemical heat treatment carburizing, carbonitriding, and nitrocarburizing can be improved. Seepage rate.
- the raw materials in the heat treatment atmosphere have sufficient cracking, less carbon black, and stable gas production quality.
- FIG. 1 is a schematic diagram showing that an auxiliary agent is passed into a heat treatment equipment or a heat treatment gas-generating equipment together with atmospheric raw materials after passing the auxiliary agent through a vaporization and atomization device;
- FIG. 2 is a schematic diagram showing that an auxiliary agent and an atmosphere raw material are respectively introduced into a heat treatment equipment or a heat treatment gas production equipment;
- FIG. 3 is a schematic diagram showing that an auxiliary agent is dissolved and dispersed in an atmospheric raw material and the raw material is introduced into the equipment together;
- FIG. 4 is a schematic diagram showing that an auxiliary agent is dissolved or dispersed in a carrier gas and then passed into a heat treatment equipment or a heat treatment gas production equipment together with an atmosphere raw material; specific embodiments (divided into method examples and composition examples):
- any one or more carbon-containing compounds may be used or replaced, for example: kerosene, ethanol, n-butanol, isopropanol, xylene, toluene, Instead of benzene, acetone, ethyl acetate, methane, ethane, propane, butane, RX gas, natural gas, gas, etc.
- auxiliary and the atmospheric raw material are respectively passed into a heat treatment equipment or a heat treatment gas-making equipment, and the natural high temperature of the equipment is used to vaporize the auxiliary and the atmospheric raw material together.
- the furnace of the special heat treatment gas generating equipment generally needs to activate the auxiliary agent about 30 days, and the furnace needs to be stopped and replaced once a year or so.
- the auxiliary agent will no longer need to spend additional time for intentional activation and replacement.
- the gas generation temperature of the special heat treatment gas generating equipment must be controlled above ⁇ . Only in this way can the wide range of gas production be qualified. C0 2 ⁇ 0.5%, 03 ⁇ 4 ⁇ 0.04%.
- the highest process carbon potential that can be used generally does not exceed 1.25%
- the highest process carbon potential that can be used generally does not exceed 1.
- the highest process carbon potential that can be used generally does not exceed 1.
- the highest process carbon potential that can be used generally does not exceed 1.05%, otherwise the carbon potential control of the oxygen probe will fail due to the influence of carbon black, making production difficult.
- the highest process carbon potential can be increased by 0.20% and the carbon black is not increased on the basis of the original carbon potential, as shown in Table 1. 5.
- Test example Pass natural gas and air into a 90kw well carburizing furnace or a 600-type multipurpose furnace, use an oxygen probe to control the atmospheric carbon potential, and add and not add the additive of the present invention at different temperature carbon potential.
- the automatic carbon burning switch of the oxygen probe is turned off for the oxygen probe failure time test.
- the failure of the oxygen probe ⁇ 0.5 hours indicates that the serious production process of carbon black is difficult to control.
- Table 1 The test results are shown in Table 1.
- each example includes a comparison of the results of using the auxiliary of the present invention and not using the auxiliary of the present invention under the same conditions.
- any one of the group 3 ⁇ 4 element compounds listed in the following examples such as: trichlorobenzene, chlorotoluene, chlorobenzene, nitrochlorobenzene, carbon tetrachloride, dichloroethane, trichloroethane, three Vinyl chloride, tribromomethane, iodine, iodinated oil, methyl iodide, Freon, tetrafluoroethylene, etc. are functionally equivalent to each other and can be replaced by any of the above.
- any of the substances listed in the following examples that have a catalytic effect on high-temperature pyrolysis and oxidation of raw materials in the atmosphere such as: in organic compounds of metal elements: cobalt naphthenate, manganese naphthenate, nickel nitrate, manganese nitrate, Ferrocene and its ferrocene derivatives (such as: tert-butyl ferrocene, acetyl ferrocene, ferrocene ketone, ferrocene formic acid, butyl ferrocene, etc.) Effect can be used in organic compounds of the above metal elements Either.
- any of the nitrogen-containing organic compounds listed in the following examples such as: p-aminoazobenzene hydrochloride, nitrochlorobenzene, nitrobenzene, trinitrobenzene, melamine, cyanuric acid, bis Cyanamine, guanidine nitrate, aniline, nitrobenzene, toluene diisocyanate, melanosin, pyridine, pyrazole, pyrazine, formamide, acetamide, urea, ammonia nitrate, etc. are all functionally equivalent to each other, and they can all be used. Use either.
- the atmospheric carbon potential can be adjusted with methanol, water, or air.
- inert low-value gases such as nitrogen can be added at the same time to reduce production costs, and ammonia gas can be added at the same time for carbonitriding.
- dichloroethane is dissolved in methanol or other solvents and the atmospheric raw material is passed into the furnace together with the raw material.
- the actual flux of dichloroacetamide accounted for 0.1% by weight of the feedstock of the atmosphere. It is used for carburizing, carbonitriding, and nitrogen-carbonitriding, which can increase the rate of penetration and reduce the process. Temperature.
- cerium fluoride with the dual function of rare earth and halogen
- methanol, water or air used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of penetration and reduce the process temperature.
- Example 10 When using any of the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, RX gas, natural gas, and gas as the atmosphere raw materials, 1.5% by weight of iodine and 1% by weight of cerium naphthenate are dissolved In the gas phase, the raw materials are introduced into the furnace together with the atmospheric raw materials for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of infiltration and reduce the process temperature.
- the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, RX gas, natural gas, and gas
- 0.01% by weight of manganese nitrate is added to the atmospheric raw material methanol to prepare a heat treatment atmosphere or to protect the atmosphere heat treatment, which can reduce the formation of carbon black and increase the gas production.
- nickel nitrate When using any of gaseous materials such as methane, ethane, propane, butane, RX gas, natural gas, and gas as the atmospheric raw materials, dissolve nickel nitrate in methanol or other solvents and pass them into the furnace with the atmospheric raw materials.
- gaseous materials such as methane, ethane, propane, butane, RX gas, natural gas, and gas
- nickel nitrate accounted for 0.008% by weight of the amount of raw materials in the atmosphere. It is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the penetration rate and reduce the process temperature.
- the atmosphere raw material When using any of the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, natural gas, and gas as the atmosphere raw material, 0.008% by weight of tert-butylferrocene is dissolved in the gas phase together with the atmosphere raw material After being introduced into the furnace, the carbon potential is adjusted by adding methanol, water, or air, which is used to prepare a heat treatment atmosphere or perform an atmosphere heat treatment protection, which can reduce the formation of carbon black and increase the gas production.
- the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, natural gas, and gas
- Adding 0.03% by weight of butylferrocene and 0.6% by weight of lanthanum nitrate to the methanol of the atmosphere as raw materials are used to prepare a heat-treated protective atmosphere or to perform atmospheric heat-treatment protection, which can reduce the formation of carbon black and increase gas production.
- 0015% ⁇ ferrocene and 0.3% wt naphthenic acid decoration when using any of the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, natural gas, and gas as the atmosphere raw materials It is dissolved in the gas phase and passed into the furnace together with the atmospheric raw materials.
- the carbon potential is adjusted by adding methanol, water, or air. It is used to prepare a heat treatment atmosphere or protect the atmosphere heat treatment, which can reduce the formation of carbon black and increase the gas production.
- any of the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, RX gas, natural gas, gas, and RX gas as raw materials for the atmosphere
- 0.006% by weight of acetylferrocene and 1. 5% by weight of cerium naphthenate is dissolved in the gas phase and passed into the furnace together with the atmospheric raw materials. It is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of infiltration and reduce the process temperature.
- Example 38 When methane, ethane, propane, butane, RX gas, natural gas, gas and other gas atmosphere manufacturing materials are used as the atmosphere raw materials, 1% by weight of hexogen and 1% by weight of naphthenate are dissolved in The gas phase and atmospheric raw materials are introduced into the furnace together for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of infiltration and reduce the process temperature.
- the atmosphere raw materials When using any of the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, RX gas, natural gas, and gas as the atmosphere raw materials, 0.006% by weight of ferrocene, 2% by weight
- the Freon is dissolved in the gas phase and passed into the furnace with the raw materials in the atmosphere.
- the carbon potential is adjusted by adding methanol, water, or air. It is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of penetration and reduce the process temperature.
- ferrocene 2% by weight of cerium naphthenate, and 1% by weight of trichloroethylene were added to the raw materials methanol and benzene in the atmosphere, for carburizing, carbonitriding, and nitrocarburizing , Can increase the penetration rate or reduce the process temperature.
- the actual amount of manganese naphthenate is controlled to account for 0.006% by weight of the feedstock of the atmosphere
- the actual amount of tribromomethane is controlled to account for 1% by weight of the feedstock of the atmosphere
- lanthanum nitrate is controlled
- the actual penetration amount is 0.6% by weight of the atmospheric raw material intake amount, which is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the penetration rate and reduce the process temperature.
- Heavy iodine and 1% by weight of cerium naphthenate are dissolved in the gas phase and passed into the furnace together with the atmospheric raw materials. They are used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of infiltration and reduce the process temperature.
- Example 54 When using any of the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, RX gas, and natural gas as the atmosphere raw materials, 2% by weight of carbon tetrachloride and 3% by weight of toluene diisocyanate are dissolved in The gas phase and the raw materials in the atmosphere are introduced into the furnace together, and the carbon potential is adjusted by adding methanol, water, or air. It is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of infiltration and reduce the process temperature.
- Example 54 Example 54:
- Add 1% by weight of lanthanum naphthenate and 1% by weight of nitrochlorobenzene (with the dual functions of nitrogen compounds and halogens) to the raw materials methanol and kerosene for carburizing, carbonitriding, nitrogen-carbon Co-infiltration can increase the infiltration rate or reduce the process temperature.
- Example 59 Add 002% by weight of cobalt naphthenate and 2% by weight of p-aminoazobenzene hydrochloride to kerosene in the atmosphere, and adjust the carbon potential by adding methanol, water or air. Used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of penetration and reduce the process temperature.
- 0009% by weight of ferrocene derivatives and 1% by weight of hesso gold are added to the raw materials methanol and kerosene in the atmosphere, which can be used for carburizing, carbonitriding, and nitrocarburizing, which can increase the penetration rate or Reduce process temperature.
- the atmosphere raw material When using any of the gas atmosphere manufacturing materials such as methane, ethane, propane, butane, RX gas, natural gas, and gas as the atmosphere raw material, 0.006% by weight of acetylferrocene, 1% by weight of formazan
- the amide is dissolved in the gas phase and passed into the furnace together with the raw materials in the atmosphere.
- the carbon potential is adjusted by adding methanol, water, or air. It is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of penetration and reduce the process temperature.
- manganese nitrate, pyridine and cerium naphthenate are dissolved in methanol or other solvents to neutralize Atmospheric raw materials are introduced into the furnace together, the actual amount of manganese nitrate is controlled to account for 0.02% by weight of the atmospheric raw materials, the actual amount of pyridine is controlled to account for 1% by weight of the atmospheric materials, and naphthenes are controlled.
- the actual flux of acid rhenium accounts for 0.6% by weight of the flux of atmospheric raw materials. It is used for carburizing, carbonitriding, and nitrocarburizing, which can increase the rate of penetration and reduce the process temperature.
- 0.004% by weight of ferrocene, 2% by weight of methyl iodide, and 1% by weight of cyanuric acid were respectively added to the atmospheric raw materials methanol and kerosene for carburizing, carbonitriding, and nitrocarburizing. , Can increase the penetration rate or reduce the process temperature.
- Embodiment 73
- tetrafluoroethylene and urea are dissolved in methanol or other solvents and passed into the furnace together with the atmospheric raw materials. Control the actual flux of tetrafluoroethylene to account for 2% by weight of the raw materials in the atmosphere, and control the actual flux of cyanuric acid to account for 1% by weight of the raw materials in the atmosphere. Used for carburizing, carbonitriding, nitrogen Carbon infiltration can increase the infiltration rate and reduce the process temperature.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
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Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB028171853A CN100487153C (zh) | 2001-07-09 | 2002-07-09 | 热处理气氛助剂及其使用方法 |
JP2003512456A JP2005532471A (ja) | 2002-07-09 | 2002-07-09 | 熱処理雰囲気の助剤とその使い方、助剤を使っている熱処理方法と熱処理雰囲気 |
CA002492170A CA2492170A1 (en) | 2001-07-09 | 2002-07-09 | Atmosphere heat treatment cocatalyst, method of its application, heat treatment method and heat treatment atmosphere of using the cocatalyst |
US10/520,563 US20060183635A1 (en) | 2001-07-09 | 2002-07-09 | Atmosphere heat treatment cocatalyst, method of its application, heat treatment method and heat treatment atmosphere of using the cocatalyst |
EP02750765A EP1544318A4 (en) | 2002-07-09 | 2002-07-09 | ATMOSPHERE THERMAL PROCESSING COCATALIZER, METHOD FOR APPLICATION THEREOF, THERMAL TREATMENT METHOD, AND THERMOPRATED ATMOSPHERE USING THE COCATALYST |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN01128712A CN1394981A (zh) | 2001-07-09 | 2001-07-09 | 气氛热处理助剂及其用法 |
CN01128712.8 | 2001-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003006700A1 true WO2003006700A1 (fr) | 2003-01-23 |
Family
ID=4668550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2002/000486 WO2003006700A1 (fr) | 2001-07-09 | 2002-07-09 | Cocatalyseur de traitement thermique d'atmosphere, procede pour son application, procede de traitement thermique et atmosphere thermotraitee a l'aide de ce cocatalyseur |
Country Status (4)
Country | Link |
---|---|
US (1) | US20060183635A1 (zh) |
CN (2) | CN1394981A (zh) |
CA (1) | CA2492170A1 (zh) |
WO (1) | WO2003006700A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100363527C (zh) * | 2005-12-26 | 2008-01-23 | 哈尔滨工业大学 | 稀土真空高压脉动低温化学热处理方法及其系统 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101435065B (zh) * | 2007-11-15 | 2010-12-01 | 冯俊杰 | 高速钢模具低温稀土催渗软氮化处理工艺 |
CN101560637B (zh) * | 2008-04-17 | 2011-08-17 | 北京有色金属研究总院 | 一种化学热处理用有机稀土催渗剂 |
CN103060741B (zh) * | 2012-12-20 | 2014-11-26 | 桐乡市恒泰精密机械有限公司 | 汽车空调压缩机偏心轮的局部渗碳方法 |
CN104195502A (zh) * | 2014-09-30 | 2014-12-10 | 鹏驰五金制品有限公司 | 一种钢铁表面的发黑工艺 |
CN105327708B (zh) * | 2015-10-10 | 2017-11-14 | 岭南师范学院 | 一种Se掺杂少层数WS2纳米片/氮、磷共掺杂石墨烯复合纳米材料的制备方法 |
CN105986221A (zh) * | 2016-07-03 | 2016-10-05 | 江苏腾天工业炉有限公司 | 节能环保型快速硬氮化炉 |
CN108399976A (zh) * | 2018-02-27 | 2018-08-14 | 铜陵集思意特种编织线有限公司 | 一种铜编织线制作方法 |
CN111733376A (zh) * | 2020-05-12 | 2020-10-02 | 扬州市金诺尔不锈钢有限公司 | 一种不锈钢的表面处理方法 |
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RU2038412C1 (ru) * | 1992-01-11 | 1995-06-27 | Малое государственное предприятие "Альфа-ВАМИ" | Реакционный состав для химико-термической обработки материалов |
RU2048599C1 (ru) * | 1993-05-14 | 1995-11-20 | Петр Павлович Емельянов | Способ получения контролируемой атмосферы для термической и химико-термической обработки деталей |
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2001
- 2001-07-09 CN CN01128712A patent/CN1394981A/zh active Pending
-
2002
- 2002-07-09 CN CNB028171853A patent/CN100487153C/zh not_active Expired - Fee Related
- 2002-07-09 CA CA002492170A patent/CA2492170A1/en not_active Abandoned
- 2002-07-09 WO PCT/CN2002/000486 patent/WO2003006700A1/zh active Application Filing
- 2002-07-09 US US10/520,563 patent/US20060183635A1/en not_active Abandoned
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CN1036232A (zh) * | 1989-03-04 | 1989-10-11 | 国家机械工业委员会武汉材料保护研究所 | 一种复合渗碳剂 |
CN1067258A (zh) * | 1991-03-08 | 1992-12-23 | 切夫里昂研究和技术公司 | 低硫重整工艺 |
RU2038412C1 (ru) * | 1992-01-11 | 1995-06-27 | Малое государственное предприятие "Альфа-ВАМИ" | Реакционный состав для химико-термической обработки материалов |
RU2048599C1 (ru) * | 1993-05-14 | 1995-11-20 | Петр Павлович Емельянов | Способ получения контролируемой атмосферы для термической и химико-термической обработки деталей |
CN1191885A (zh) * | 1997-02-28 | 1998-09-02 | 中外炉工业株式会社 | 渗碳用载气的制造方法 |
EP0947599A1 (de) * | 1998-03-31 | 1999-10-06 | Linde Aktiengesellschaft | Verfahren zur Wärmebehandlung von Werkstücken mit Behandlungsgas |
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CN100363527C (zh) * | 2005-12-26 | 2008-01-23 | 哈尔滨工业大学 | 稀土真空高压脉动低温化学热处理方法及其系统 |
Also Published As
Publication number | Publication date |
---|---|
CA2492170A1 (en) | 2003-01-23 |
CN1394981A (zh) | 2003-02-05 |
US20060183635A1 (en) | 2006-08-17 |
CN1549870A (zh) | 2004-11-24 |
CN100487153C (zh) | 2009-05-13 |
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