CN102912283A - High-temperature variable-carbon potential quick carburizing treatment process for gear parts - Google Patents
High-temperature variable-carbon potential quick carburizing treatment process for gear parts Download PDFInfo
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- CN102912283A CN102912283A CN2012103903805A CN201210390380A CN102912283A CN 102912283 A CN102912283 A CN 102912283A CN 2012103903805 A CN2012103903805 A CN 2012103903805A CN 201210390380 A CN201210390380 A CN 201210390380A CN 102912283 A CN102912283 A CN 102912283A
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Abstract
The invention relates to a high-temperature variable-carbon potential quick carburizing treatment process for gear parts. The high-temperature variable-carbon potential quick carburizing treatment process comprises the steps as follows: strongly carburizing for the first time; diffusing for the first time; strongly carburizing for the second time; diffusing for the second time; cooling; quenching; cleaning; tempering; and taking out the parts, discharging and air-cooling. According to the high-temperature variable-carbon potential quick carburizing treatment process, a high-temperature variable-carbon potential method is adopted, so that the process time can be shortened by 20-30% under the condition that materials, part sizes and carburized layer depths are the same, that is, the efficiency is improved.
Description
Technical field
The present invention relates to the heat treatment technics field, especially a kind of high temperature of gear part becomes carbon potential rapid carburization treatment process.
Background technology
Carburizing is for the carbon content that increases the steel part top layer and certain carbon profile, steel part is heated in carburizing medium and is incubated, and makes carbon atom infiltrate the chemical heat treatment process on top layer.Q-tempering after the carburizing can make piece surface hardness raising, wear-resisting, and good core toughness.Carbonitriding is to infiltrate nitrogen and carbon to workpiece surface, and take nitriding as main thermal treatment process.Nitrided layer hardness is lower, and fragility is less.The major advantage workpiece deformation is little, not limited by steel grade.But the infiltration layer of carbonitriding is thinner, should not bear heavy lift.
Traditional carburization process is to ooze by force in 920-930 ℃, and carbon potential 1.2%CP is incubated 7-9 hour, then carries out diffusion temperature 920-930 ℃, and carbon potential 0.8%CP is incubated 5-7 hour, is cooled to afterwards quenching temperature and quenches.Process time is long, and efficient is low.
Summary of the invention
The technical problem to be solved in the present invention is: overcomes the deficiency in the prior art, provides a kind of high temperature of gear part to become carbon potential rapid carburization treatment process, adopt high temperature to become the carbon potential method and enhance productivity.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high temperature of gear part becomes carbon potential rapid carburization treatment process, and its step is as follows:
(1) once ooze by force: at first in cementing furnace part is carried out oozing by force of carburizing, keep furnace temperature 940-950 ℃ of scope, soaking time is 300 ± 10min, and the carbon potential in the meshbeltfurnace is in 1.30～1.35%CP;
(2) One Diffusion Process: then in cementing furnace, part is carried out the diffusion of carburizing, keep furnace temperature 940-950 ℃ of scope, insulation 240 ± 10min, the carbon potential in the meshbeltfurnace is down to 0.7～0.8%CP;
(3) secondary oozes by force: keep furnace temperature 940-950 ℃ of scope, and insulation 180～360min, the carbon potential in the meshbeltfurnace rises to 1.20～1.30%CP;
(4) secondary diffusion: keep furnace temperature 940-950 ℃ of scope, insulation 120～240min, the carbon potential in the meshbeltfurnace is down to 0.7～0.8%CP;
(5) cooling: part is cooled to 840 ± 10 ℃ with stove, and keeps 60 ± 10min, keeps the interior carbon potential of stove in the temperature-fall period at 0.7～0.8%CP;
(6) quench: part is carried out oil quenching at 840 ± 10 ℃, 70 ± 10 ℃ of the temperature of quenching oil;
(7) clean: remove the component surface oil stain, rinse liquid temperature is controlled at 50 ± 10 ℃;
(8) tempering: carry out low-temperaturetempering, tempering temperature 180-200 ℃, time 300 ± 60min;
(9) take out component, the air cooling of coming out of the stove.
The invention has the beneficial effects as follows, the high temperature of gear part of the present invention becomes carbon potential rapid carburization treatment process and adopts high temperature to become the carbon potential method, in the situation that same material, accessory size and depth of penetration can shorten the process time of 20-30%, efficient improves; Especially be fit to the gear part that the materials such as 17CrNiMo6,20Cr2Ni4,20CrNi2Mo, 20Cr2MnMo, 12CrNi3 are made.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the process diagram that the high temperature of gear part of the present invention becomes the embodiment one of carbon potential rapid carburization treatment process;
Fig. 2 is the process diagram that the high temperature of gear part of the present invention becomes the embodiment two of carbon potential rapid carburization treatment process;
Fig. 3 is the process diagram that the high temperature of gear part of the present invention becomes the embodiment three of carbon potential rapid carburization treatment process.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic technology of the present invention only is described in a schematic way, so it only show the processing condition relevant with the present invention.
Embodiment one:
As shown in Figure 1, the high temperature of a kind of gear part of the present invention becomes the embodiment one of carbon potential rapid carburization treatment process, and step is as follows:
(1) once ooze by force: at first in cementing furnace part is carried out oozing by force of carburizing, keep furnace temperature 940-950 ℃ of scope, soaking time is 300min, and the carbon potential in the meshbeltfurnace is in 1.30CP;
(2) One Diffusion Process: then in cementing furnace, part is carried out the diffusion of carburizing, keep furnace temperature 940-950 ℃ of scope, insulation 240min, the carbon potential in the meshbeltfurnace is at 0.7%CP;
(3) secondary oozes by force: keep furnace temperature 940-950 ℃ of scope, and insulation 180min, the carbon potential in the meshbeltfurnace is at 1.20%CP;
(4) secondary diffusion: keep furnace temperature 940-950 ℃ of scope, insulation 120min, the carbon potential in the meshbeltfurnace is at 0.7%CP;
(5) cooling: part is cooled to 840 ± 10 ℃ with stove, and keeps 60 ± 10min, keeps the interior carbon potential of stove in the temperature-fall period at 0.7%CP;
(6) quench: part is carried out oil quenching at 840 ± 10 ℃, 70 ± 10 ℃ of the temperature of quenching oil;
(7) clean: remove the component surface oil stain, rinse liquid temperature is controlled at 50 ± 10 ℃;
(8) tempering: carry out low-temperaturetempering, tempering temperature 180-200 ℃, time 300 ± 60min;
(9) take out component, the air cooling of coming out of the stove.
By the part that this processing parameter is finished, through measuring, depth of penetration is 2.2mm.The process time that blends by force quenching is about 840min.Step (6) to (9) is conventional technique, is not improvement of the present invention, uses other parameters, and is little to its carburizing influential effect.The temperature that blends by force when diffusion maintains 940-950 ℃ of scope and get final product, and Yin Wendu is a running balance value when control, and process also can cause the fluctuation of temperature when detecting, and other temperature also are like this, and the impact on part in this scope is not very large.
Embodiment two:
As shown in Figure 2, the high temperature of a kind of gear part of the present invention becomes the embodiment two of carbon potential rapid carburization treatment process, and step is as follows:
Be with the distinguishing characteristics of embodiment one:
(1) once ooze by force: at first in cementing furnace part is carried out oozing by force of carburizing, keep furnace temperature 940-950 ℃ of scope, soaking time is 300min, and the carbon potential in the meshbeltfurnace is in 1.30%CP;
(2) One Diffusion Process: then in cementing furnace, part is carried out the diffusion of carburizing, keep furnace temperature 940-950 ℃ of scope, insulation 240min, the carbon potential in the meshbeltfurnace is at 0.75%CP;
(3) secondary oozes by force: keep furnace temperature 940-950 ℃ of scope, and insulation 300min, the carbon potential in the meshbeltfurnace is at 1.25%CP;
(4) secondary diffusion: keep furnace temperature 940-950 ℃ of scope, insulation 180min, the carbon potential in the meshbeltfurnace is at 0.75%CP;
(5) cooling: part is cooled to 840 ± 10 ℃ with stove, and keeps 60 ± 10min, keeps the interior carbon potential of stove in the temperature-fall period at 0.75%CP;
By the part that this processing parameter is finished, through measuring, depth of penetration is 2.5mm.The process time that blends by force quenching is about 1020min.Step (6) to (9) is conventional technique, is not improvement of the present invention, uses other parameters, and is little to its carburizing influential effect.The temperature that blends by force when diffusion maintains 940-950 ℃ of scope and get final product, and Yin Wendu is a running balance value when control, and process also can cause the fluctuation of temperature when detecting, and other temperature also are like this, is not very large on the impact of part.
Embodiment three:
As shown in Figure 3, the high temperature of a kind of gear part of the present invention becomes the embodiment three of carbon potential rapid carburization treatment process, and step is as follows:
Be with the distinguishing characteristics of embodiment one:
(1) once ooze by force: at first in cementing furnace part is carried out oozing by force of carburizing, keep furnace temperature 940-950 ℃ of scope, soaking time is 300min, and the carbon potential in the meshbeltfurnace is in 1.35%CP;
(2) One Diffusion Process: then in cementing furnace, part is carried out the diffusion of carburizing, keep furnace temperature 940-950 ℃ of scope, insulation 240min, the carbon potential in the meshbeltfurnace is at 0.8%CP;
(3) secondary oozes by force: keep furnace temperature 940-950 ℃ of scope, and insulation 360min, the carbon potential in the meshbeltfurnace is at 1.30%CP;
(4) secondary diffusion: keep furnace temperature 940-950 ℃ of scope, insulation 240min, the carbon potential in the meshbeltfurnace is at 0.8%CP.
(5) cooling: part is cooled to 840 ± 10 ℃ with stove, and keeps 60 ± 10min, keeps the interior carbon potential of stove in the temperature-fall period at 0.8%CP;
By the part that this processing parameter is finished, through measuring, depth of penetration is 2.7mm.The process time that blends by force quenching is about 1240min.Step (6) to (9) is conventional technique, is not improvement of the present invention, uses other parameters, and is little to its carburizing influential effect.The temperature that blends by force when diffusion maintains 940-950 ℃ of scope and get final product, and Yin Wendu is a running balance value when control, and process also can cause the fluctuation of temperature when detecting, and other temperature also are like this, is not very large on the impact of part.
Claims (1)
1. the high temperature of a gear part becomes carbon potential rapid carburization treatment process, and its step is as follows:
(1) once ooze by force: at first in cementing furnace part is carried out oozing by force of carburizing, keep furnace temperature 940-950 ℃ of scope, soaking time is 300 ± 10min, and the carbon potential in the meshbeltfurnace is in 1.30～1.35%CP;
(2) One Diffusion Process: then in cementing furnace, part is carried out the diffusion of carburizing, keep furnace temperature 940-950 ℃ of scope, insulation 240 ± 10min, the carbon potential in the meshbeltfurnace is down to 0.7～0.8%CP;
(3) secondary oozes by force: keep furnace temperature 940-950 ℃ of scope, and insulation 180～360min, the carbon potential in the meshbeltfurnace rises to 1.20～1.30%CP;
(4) secondary diffusion: keep furnace temperature 940-950 ℃ of scope, insulation 120～240min, the carbon potential in the meshbeltfurnace is down to 0.7～0.8%CP;
(5) cooling: part is cooled to 840 ± 10 ℃ with stove, and keeps 60 ± 10min, keeps the interior carbon potential of stove in the temperature-fall period at 0.7～0.8%CP;
(6) quench: part is carried out oil quenching at 840 ± 10 ℃, 70 ± 10 ℃ of the temperature of quenching oil;
(7) clean: remove the component surface oil stain, rinse liquid temperature is controlled at 50 ± 10 ℃;
(8) tempering: carry out low-temperaturetempering, tempering temperature 180-200 ℃, time 300 ± 60min;
(9) take out component, the air cooling of coming out of the stove.
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624505A (en) * | 2013-11-29 | 2014-03-12 | 重庆清平机械厂 | Wind power output gear shaft machining method |
| CN103643240A (en) * | 2013-11-26 | 2014-03-19 | 常熟市东风齿轮厂 | Rapid carburization processing technology for gear |
| CN103643200A (en) * | 2013-11-26 | 2014-03-19 | 常熟市东风齿轮厂 | Composite carburization quenching technology for gear |
| CN104070328A (en) * | 2014-06-26 | 2014-10-01 | 无锡市崇安区科技创业服务中心 | Mining roller bit steel-tooth cone manufacturing process |
| CN104213070A (en) * | 2014-07-30 | 2014-12-17 | 珠海市钧兴机电有限公司 | Control process for carburized layer of sewing machine gear |
| CN104404443A (en) * | 2014-11-24 | 2015-03-11 | 张家港保税区奇利国际贸易有限公司 | Carburizing process for bearing part of wagon |
| CN104404533A (en) * | 2014-11-19 | 2015-03-11 | 牡丹江市林海石油打捞工具有限公司 | Heat treatment process for fishing tool made of 20CrNi2Mo steel |
| CN104614394A (en) * | 2015-01-14 | 2015-05-13 | 福建乾达重型机械有限公司 | Detecting method for carburized layer in 17CrNiMo6 carburizing process |
| CN104630791A (en) * | 2015-02-09 | 2015-05-20 | 南车戚墅堰机车车辆工艺研究所有限公司 | Multi-segment deep carburization method of large heavy-duty gear |
| CN105177492A (en) * | 2015-10-26 | 2015-12-23 | 江苏保捷锻压有限公司 | Carburizing and quenching heat treatment process of driven reverse gear used for transmissions |
| CN105331888A (en) * | 2015-12-11 | 2016-02-17 | 东北大学 | Regulating method for surface and core part structure of 20CrNi2MoV steel |
| CN109082628A (en) * | 2018-08-17 | 2018-12-25 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of Gear Carbonization Process and its application |
| CN111364000A (en) * | 2020-04-30 | 2020-07-03 | 中国航发哈尔滨东安发动机有限公司 | Method for controlling carburization process of aviation carburized part |
| CN113337826A (en) * | 2021-05-20 | 2021-09-03 | 昆山三民涂赖电子材料技术有限公司 | Carburizing heat treatment process for fatigue-resistant metal sliding block |
| CN114032493A (en) * | 2021-09-28 | 2022-02-11 | 上海热处理厂有限公司 | Method for modifying high hardness of surface of low-carbon alloy steel |
| CN115011882A (en) * | 2022-08-08 | 2022-09-06 | 苏州亚太精睿传动科技股份有限公司 | Efficient and energy-saving heat treatment method applied to gear |
| CN115011911A (en) * | 2022-08-08 | 2022-09-06 | 苏州亚太精睿传动科技股份有限公司 | Method for controlling heat treatment deformation of large-modulus gear |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643240A (en) * | 2013-11-26 | 2014-03-19 | 常熟市东风齿轮厂 | Rapid carburization processing technology for gear |
| CN103643200A (en) * | 2013-11-26 | 2014-03-19 | 常熟市东风齿轮厂 | Composite carburization quenching technology for gear |
| CN103624505A (en) * | 2013-11-29 | 2014-03-12 | 重庆清平机械厂 | Wind power output gear shaft machining method |
| CN104070328A (en) * | 2014-06-26 | 2014-10-01 | 无锡市崇安区科技创业服务中心 | Mining roller bit steel-tooth cone manufacturing process |
| CN104213070A (en) * | 2014-07-30 | 2014-12-17 | 珠海市钧兴机电有限公司 | Control process for carburized layer of sewing machine gear |
| CN104213070B (en) * | 2014-07-30 | 2018-12-11 | 珠海市钧兴机电有限公司 | Sewing machine gear wheel carburization layer control technique |
| CN104404533A (en) * | 2014-11-19 | 2015-03-11 | 牡丹江市林海石油打捞工具有限公司 | Heat treatment process for fishing tool made of 20CrNi2Mo steel |
| CN104404443A (en) * | 2014-11-24 | 2015-03-11 | 张家港保税区奇利国际贸易有限公司 | Carburizing process for bearing part of wagon |
| CN104614394A (en) * | 2015-01-14 | 2015-05-13 | 福建乾达重型机械有限公司 | Detecting method for carburized layer in 17CrNiMo6 carburizing process |
| CN104630791B (en) * | 2015-02-09 | 2017-09-26 | 中车戚墅堰机车车辆工艺研究所有限公司 | The multisection type Deep Carburization Process method of large heavy-load gear |
| CN104630791A (en) * | 2015-02-09 | 2015-05-20 | 南车戚墅堰机车车辆工艺研究所有限公司 | Multi-segment deep carburization method of large heavy-duty gear |
| CN105177492A (en) * | 2015-10-26 | 2015-12-23 | 江苏保捷锻压有限公司 | Carburizing and quenching heat treatment process of driven reverse gear used for transmissions |
| CN105331888A (en) * | 2015-12-11 | 2016-02-17 | 东北大学 | Regulating method for surface and core part structure of 20CrNi2MoV steel |
| CN105331888B (en) * | 2015-12-11 | 2017-05-10 | 东北大学 | Regulating method for surface and core part structure of 20CrNi2MoV steel |
| CN109082628A (en) * | 2018-08-17 | 2018-12-25 | 中车戚墅堰机车车辆工艺研究所有限公司 | A kind of Gear Carbonization Process and its application |
| CN111364000A (en) * | 2020-04-30 | 2020-07-03 | 中国航发哈尔滨东安发动机有限公司 | Method for controlling carburization process of aviation carburized part |
| CN113337826A (en) * | 2021-05-20 | 2021-09-03 | 昆山三民涂赖电子材料技术有限公司 | Carburizing heat treatment process for fatigue-resistant metal sliding block |
| CN114032493A (en) * | 2021-09-28 | 2022-02-11 | 上海热处理厂有限公司 | Method for modifying high hardness of surface of low-carbon alloy steel |
| CN115011882A (en) * | 2022-08-08 | 2022-09-06 | 苏州亚太精睿传动科技股份有限公司 | Efficient and energy-saving heat treatment method applied to gear |
| CN115011911A (en) * | 2022-08-08 | 2022-09-06 | 苏州亚太精睿传动科技股份有限公司 | Method for controlling heat treatment deformation of large-modulus gear |
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Application publication date: 20130206 |