CN110564940A - Quenching processing technology of water pump impeller - Google Patents
Quenching processing technology of water pump impeller Download PDFInfo
- Publication number
- CN110564940A CN110564940A CN201910774672.0A CN201910774672A CN110564940A CN 110564940 A CN110564940 A CN 110564940A CN 201910774672 A CN201910774672 A CN 201910774672A CN 110564940 A CN110564940 A CN 110564940A
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- Prior art keywords
- quenching
- impeller
- treatment
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- water pump
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
the invention discloses a quenching processing technology of a water pump impeller, which is characterized by comprising the following processing steps of: firstly, conveying an impeller workpiece to be quenched into a drying room for preheating treatment; quickly putting the preheated impeller workpiece into quenching oil for primary quenching treatment; putting the impeller workpiece subjected to the primary treatment into a carburizing furnace for carburizing and quenching, and introducing ammonia gas for secondary quenching treatment; taking out the impeller workpiece subjected to the secondary quenching treatment, then carrying out air cooling treatment, and cooling to room temperature; and tempering the impeller workpiece cooled to room temperature, and taking out the tempered impeller workpiece and cooling to room temperature to obtain an impeller product. The invention can improve the hardness uniformity and the wear resistance and the corrosion resistance of the surface of the workpiece, reduce the retained austenite amount of the impeller workpiece after quenching, and effectively improve the mechanical strength of the impeller workpiece.
Description
Technical Field
The invention belongs to the technical field of water pumps, and particularly relates to a quenching processing technology of a water pump impeller.
background
when mining operation is carried out, the most common equipment is the water pump, and an efficient mining water pump plays a great role in improving the mining work efficiency. The impeller is an important working part of the mining water pump, the shape, the size, the processing technology and the like of the impeller have decisive influence on the performance of the mining water pump, the impeller is used for transmitting energy input by a prime motor to liquid, and the impeller mainly has three structural forms: a closed impeller with front and back cover plates; a so-called semi-open impeller with only a back cover plate; the impeller without front and back cover plates is called an open impeller, and the structural form of the blades can be divided into two types, namely cylindrical blades and twisted blades. The water pump impeller treated by the traditional quenching processing technology has the problems of low mechanical strength, low product quality qualification rate and the like, so the traditional quenching processing technology of the water pump impeller needs to be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a quenching processing technology of a water pump impeller, which can improve the hardness uniformity and the wear resistance and corrosion resistance of the surface of a workpiece, reduce the residual austenite amount of the impeller workpiece after quenching and effectively improve the mechanical strength of the impeller workpiece.
in order to achieve the above object, the present invention adopts the following technical solutions:
a quenching processing technology of a water pump impeller is characterized by comprising the following processing steps:
s1, firstly, conveying the impeller workpiece to be quenched into a drying room for preheating treatment;
S2, quickly putting the preheated impeller workpiece into quenching oil for primary quenching treatment;
S3, putting the impeller workpiece subjected to the primary treatment into a carburizing furnace for carburizing and quenching, and introducing ammonia gas for secondary quenching treatment;
s4, taking out the impeller workpiece subjected to the secondary quenching treatment, performing air cooling treatment, and cooling to room temperature;
and S5, tempering the impeller workpiece cooled to room temperature, taking out the tempered impeller workpiece and cooling to room temperature to obtain an impeller product.
preferably, in the step S1, the preheating temperature is 260 ~ 280 ℃ and the preheating time is 3 ~ 5 hours.
more preferably, in the step S2, the primary quenching temperature is 150 ~ 160 ℃, and the quenching time is 1.5 ~ 2.5 hours.
More preferably, in the step S3, the carburizing medium is slowly dropped into the carburizing furnace during the secondary quenching process, and the carburizing medium is prepared by mixing formaldehyde, acetic acid and glycerol.
further preferably, in the step S3, the mass ratio of formaldehyde, acetic acid and glycerin is (2 ~ 8): 1 ~ 5): 4 ~ 7.
specifically, in the step S3, the secondary quenching temperature is 580 ~ 720 ℃, and the quenching time is 3 ~ 3.5 hours.
preferably, in the step S4, the tempering temperature is 430 ~ 520 ℃ and the tempering time is 1 ~ 2.5 h.
The invention has the advantages that: in the quenching processing technology of the water pump impeller, the hardness uniformity and the wear resistance and corrosion resistance of the surface of a workpiece can be improved through two times of quenching treatment, and the production process is environment-friendly and safe, has low pollution and high production efficiency; the carburizing medium prepared by mixing formaldehyde, acetic acid and glycerol is added in the carburizing and quenching process, so that the residual austenite amount of the impeller workpiece after quenching can be reduced, the mechanical strength of the impeller workpiece is effectively improved, and the qualification rate of the product is improved.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
Example 1
A quenching processing technology of a water pump impeller is characterized by comprising the following processing steps:
S1, firstly, conveying the impeller workpiece to be quenched into a drying room for preheating treatment, wherein the preheating temperature is 260 ℃, and the preheating time is 3 hours;
s2, quickly putting the preheated impeller workpiece into quenching oil, and performing primary quenching treatment, wherein the primary quenching temperature is 150 ℃ and the quenching time is 1.5 h;
S3, putting the impeller workpiece subjected to the primary treatment into a carburizing furnace for carburizing and quenching, slowly adding a carburizing medium dropwise into the carburizing furnace, introducing ammonia gas, and performing secondary quenching treatment, wherein the secondary quenching temperature is 580 ℃ and the quenching time is 3 hours; the carburizing medium is prepared by mixing formaldehyde, acetic acid and glycerol, and the mass ratio of the formaldehyde to the acetic acid to the glycerol is 2: 1: 4;
S4, taking out the impeller workpiece subjected to the secondary quenching treatment, performing air cooling treatment, and cooling to room temperature;
And S5, tempering the impeller workpiece cooled to room temperature, wherein the tempering temperature is 430 ℃, the tempering time is 1h, and taking out the tempered impeller workpiece and cooling to room temperature to obtain an impeller product.
Example 2
a quenching processing technology of a water pump impeller is characterized by comprising the following processing steps:
s1, firstly, conveying an impeller workpiece to be quenched into a drying room for preheating treatment, wherein the preheating temperature is 280 ℃, and the preheating time is 5 hours;
s2, quickly putting the preheated impeller workpiece into quenching oil, and performing primary quenching treatment, wherein the primary quenching temperature is 160 ℃, and the quenching time is 2.5 hours;
S3, putting the impeller workpiece subjected to the primary treatment into a carburizing furnace for carburizing and quenching, slowly dripping a carburizing medium into the carburizing furnace, introducing ammonia gas, and performing secondary quenching treatment, wherein the secondary quenching temperature is 720 ℃, and the quenching time is 3.5 hours; the carburizing medium is prepared by mixing formaldehyde, acetic acid and glycerol, and the mass ratio of the formaldehyde to the acetic acid to the glycerol is 8: 5: 7;
S4, taking out the impeller workpiece subjected to the secondary quenching treatment, performing air cooling treatment, and cooling to room temperature;
And S5, tempering the impeller workpiece cooled to room temperature, wherein the tempering temperature is 520 ℃, the tempering time is 2.5 hours, and taking out the tempered impeller workpiece and cooling to room temperature to obtain an impeller product.
example 3
A quenching processing technology of a water pump impeller is characterized by comprising the following processing steps:
S1, firstly, conveying the impeller workpiece to be quenched into a drying room for preheating treatment, wherein the preheating temperature is 270 ℃, and the preheating time is 4 hours;
s2, quickly putting the preheated impeller workpiece into quenching oil, and performing primary quenching treatment at the primary quenching temperature of 155 ℃ for 2 hours;
s3, putting the impeller workpiece subjected to the primary treatment into a carburizing furnace for carburizing and quenching, slowly dripping a carburizing medium into the carburizing furnace, introducing ammonia gas, and performing secondary quenching treatment, wherein the secondary quenching temperature is 650 ℃ and the quenching time is 3.2 hours; the carburizing medium is prepared by mixing formaldehyde, acetic acid and glycerol, and the mass ratio of the formaldehyde to the acetic acid to the glycerol is 5: 3: 5;
S4, taking out the impeller workpiece subjected to the secondary quenching treatment, performing air cooling treatment, and cooling to room temperature;
and S5, tempering the impeller workpiece cooled to room temperature, wherein the tempering temperature is 460 ℃, the tempering time is 1.5h, and taking out the tempered impeller workpiece and cooling to room temperature to obtain an impeller product.
the foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (7)
1. a quenching processing technology of a water pump impeller is characterized by comprising the following processing steps:
s1, firstly, conveying the impeller workpiece to be quenched into a drying room for preheating treatment;
S2, quickly putting the preheated impeller workpiece into quenching oil for primary quenching treatment;
s3, putting the impeller workpiece subjected to the primary treatment into a carburizing furnace for carburizing and quenching, and introducing ammonia gas for secondary quenching treatment;
S4, taking out the impeller workpiece subjected to the secondary quenching treatment, performing air cooling treatment, and cooling to room temperature;
And S5, tempering the impeller workpiece cooled to room temperature, taking out the tempered impeller workpiece and cooling to room temperature to obtain an impeller product.
2. the quenching processing technology of the water pump impeller according to claim 1, wherein in the step S1, the preheating temperature is 260 ~ 280 ℃ and the preheating time is 3 ~ 5 hours.
3. the quenching processing technology of the water pump impeller according to claim 1, wherein in the step S2, the primary quenching temperature is 150 ~ 160 ℃, and the quenching time is 1.5 ~ 2.5 h.
4. The quenching process of a water pump impeller according to claim 1, wherein in the step S3, a carburizing medium is slowly added into the carburizing furnace in the secondary quenching process, and the carburizing medium is prepared by mixing formaldehyde, acetic acid and glycerol.
5. the quenching processing technology of a water pump impeller as claimed in claim 4, wherein in the step S3, the mass ratio of formaldehyde, acetic acid and glycerol is (2 ~ 8): 1 ~ 5): 4 ~ 7.
6. the quenching processing technology of the water pump impeller according to claim 1, wherein in the step S3, the secondary quenching temperature is 580 ~ 720 ℃, and the quenching time is 3 ~ 3.5 hours.
7. the quenching processing technology of the water pump impeller according to claim 1, wherein in the step S4, the tempering temperature is 430 ~ 520 ℃, and the tempering time is 1 ~ 2.5 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774672.0A CN110564940A (en) | 2019-08-21 | 2019-08-21 | Quenching processing technology of water pump impeller |
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|---|---|---|---|
| CN201910774672.0A CN110564940A (en) | 2019-08-21 | 2019-08-21 | Quenching processing technology of water pump impeller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113005278A (en) * | 2021-03-25 | 2021-06-22 | 德阳应和机械制造有限责任公司 | Finish machining treatment process for water pump impeller |
| CN115537715A (en) * | 2022-10-13 | 2022-12-30 | 江阴市华夏化工机械有限公司 | Steel material surface modification method for die manufacturing |
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| CN104962712A (en) * | 2015-07-29 | 2015-10-07 | 中石化石油工程机械有限公司第四机械厂 | Heat treatment method of high-pressure-resistant low-carbon alloy steel |
| CN105970087A (en) * | 2016-07-06 | 2016-09-28 | 安徽红桥金属制造有限公司 | High-strength steel automobile metal stamping part and preparing technology thereof |
| CN106148650A (en) * | 2016-07-01 | 2016-11-23 | 兴化东华齿轮有限公司 | A kind of energy saving and environment friendly Technology for Heating Processing |
| CN107245690A (en) * | 2017-06-23 | 2017-10-13 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of carburizing quenching process |
| CN108220577A (en) * | 2017-11-29 | 2018-06-29 | 江阴市永兴机械制造有限公司 | A kind of carburizing quenching process of inside spline wheel gear |
| CN109371205A (en) * | 2018-12-26 | 2019-02-22 | 溧阳福思宝高速机械有限公司 | A kind of three-dimensional flow impeller quenching processing technology |
-
2019
- 2019-08-21 CN CN201910774672.0A patent/CN110564940A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102482756A (en) * | 2009-09-11 | 2012-05-30 | 住友金属工业株式会社 | Process for production of carbonitrided member |
| CN104962712A (en) * | 2015-07-29 | 2015-10-07 | 中石化石油工程机械有限公司第四机械厂 | Heat treatment method of high-pressure-resistant low-carbon alloy steel |
| CN106148650A (en) * | 2016-07-01 | 2016-11-23 | 兴化东华齿轮有限公司 | A kind of energy saving and environment friendly Technology for Heating Processing |
| CN105970087A (en) * | 2016-07-06 | 2016-09-28 | 安徽红桥金属制造有限公司 | High-strength steel automobile metal stamping part and preparing technology thereof |
| CN107245690A (en) * | 2017-06-23 | 2017-10-13 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of carburizing quenching process |
| CN108220577A (en) * | 2017-11-29 | 2018-06-29 | 江阴市永兴机械制造有限公司 | A kind of carburizing quenching process of inside spline wheel gear |
| CN109371205A (en) * | 2018-12-26 | 2019-02-22 | 溧阳福思宝高速机械有限公司 | A kind of three-dimensional flow impeller quenching processing technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113005278A (en) * | 2021-03-25 | 2021-06-22 | 德阳应和机械制造有限责任公司 | Finish machining treatment process for water pump impeller |
| CN115537715A (en) * | 2022-10-13 | 2022-12-30 | 江阴市华夏化工机械有限公司 | Steel material surface modification method for die manufacturing |
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Application publication date: 20191213 |