CN106399642A - Special high-frequency quench cooling process for alloy steel - Google Patents
Special high-frequency quench cooling process for alloy steel Download PDFInfo
- Publication number
- CN106399642A CN106399642A CN201611016938.8A CN201611016938A CN106399642A CN 106399642 A CN106399642 A CN 106399642A CN 201611016938 A CN201611016938 A CN 201611016938A CN 106399642 A CN106399642 A CN 106399642A
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- China
- Prior art keywords
- cooling
- induction coil
- special
- thermal treatment
- heat treated
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Classifications
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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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a special high-frequency quench cooling process for alloy steel. The process comprises the steps of placing a heated thermal treatment workpiece into a gas flowing at high speed, and charging a proper quantity of ammonia into the gas as required to realize rapid cooling. Meanwhile, gas cooling is adopted on the surface of the thermal treatment workpiece, so that not only is the problem of workpiece heating caused by high-speed temperature reduction during water cooling overcome, but also the problem of high price of the adopted cooling oil is solved. According to the special high-frequency quench cooling process, the thermal treatment workpiece is placed in a special fixture, the thermal treatment workpiece is clamped by the special fixture to rotate and move; and the outer side of the thermal treatment workpiece is sleeved by an induction coil, a plurality of cooling medium flow through holes are axially formed in the induction coil, one end of each medium flow through hole is connected with an air valve of compressed air, and the other end of each medium flow through hole communicates with the space of the outer surface. The special high-frequency quench cooling process for alloy steel has the advantages of simple structure and convenience in operation and also has the advantages of safety and reliability, economy and practicability, low cost and good surface quenching quality.
Description
Technical field
The present invention relates to metal heating processing technology technical field, specially a kind of special steel alloy to high alloy content enters
The cooling technique of row high-frequency quenching.
Background technology
It is frequently encountered by the special alloy steel higher containing alloying elements such as Ni, Cr, V, Mo in high frequency heat treatment quenching process
Surface hardening part, this quenching part has on high-frequency hardening machine sees that oil catches fire, meets the characteristic that water ftractures, and it is through high-frequency induction electricity
Stream, by after rapid for surface heating, needs using quenching oil or non-aqueous medium as its cooling medium, otherwise can not reach surface
The technical requirements of quenching.Oil cooling can catch fire, water cooling excessive velocities, and quenching workpiece occurs crackle or cracking phenomena；Natural
Air rate of cooling is excessively slow, and the case hardness of quenching workpiece does not reach.The traditional method solving the above problems is very simple, buys symbol
Close the quenching liquid requiring as cooling medium.However, the domestic 1-2 of the market price of one ton of finished product quenching medium ten thousand, import 3-5
Ten thousand RMB, its price is costly, relatively costly, and cost performance is relatively low, cannot collect on High-frequency machine again, it would therefore be highly desirable to newly
Quenching cooling technique solve the above problems.
Content of the invention
It is an object of the invention to provide a kind of special steel alloy high-frequency quenching cooling technique is it is intended to meet special steel alloy
Surface high frequency quenches the requirement of quality, and makes that its technique is advanced, structurally simple, economical practicality.
The technical scheme is that：A kind of cooling technique of special steel alloy high-frequency quenching, this process unit includes specially
With fixture, heat treated part, induction coil and compressed air container, described heat treated part is arranged in special fixture, described
Special fixture clamping heat treated part rotates and mobile；Described induction coil is enclosed within the outside of heat treated part, described sensing
There is certain spacing between coil and heat treated part, in described induction coil, be axially arranged with several cooling medium through flow holes,
Described medium through flow hole one end is connected with the air valve of compressed gas, and the other end is connected with the space of outer surface；Its technique includes
Following steps：
Step one is by quenching workpiece clamping in the induction coil of induction heating equipment；
Being passed through high frequency induction current in step 2 induction coil makes surface of the work heat rapidly；
When step 3 workpiece surface temperature reaches hardening heat, cut off induction coil power supply；
Step 4 adds quenching medium in surface of the work,
It is characterized in that：
Cooling medium in described step 4 is compressed gas；
Described compressed gas are compressed air；
Described compressed gas are the mixed gas of air and ammonia；
Described compressed gas can timely adjustment pressure.
The present invention adopts compressed air as the cooling medium of induced surface hardening, its not only have structure simple,
Easy to operate advantage, also has safe and reliable, economical and practical, with low cost, the measured advantage of surface hardening matter.
Brief description
Accompanying drawing 1 is assembly of the invention structural representation.
In fig. 1：1 is compressed air container, 2 is pipeline, 3 is solenoid directional control valve, 4 is induction coil, 5 is heat treatment
Workpiece, 6 be special fixture.
Specific embodiment
Below in conjunction with accompanying drawing, explanation is further explained to the present invention：
First by heat treated part 5 clamping in special fixture 6, and with special fixture 6 by heat treated part 5 induction coil 4；
Secondly being passed through high frequency induction current in induction coil 4 makes the rapid heat temperature raising in heat treated part 5 surface；3rd works as heat treatment work
When part 5 surface temperature reaches hardening heat, cut off induction coil 4 power supply；4th air valve opening compressed gas, compressed gas are led to
Cross the surface that matter through flow hole flows into heat treated part 5, heat treated part 5 surface adds this quenching medium of compressed gas.
As shown in Figure 1, heat treated part 5 is clamped and rotates and move by special fixture 6；Induction coil 4 has distance ground
Cover on the periphery of heat treated part 5, so that heat treated part 5 is produced high frequency induction current and obtain heating, and in induction coil 4
It is provided with the cooling medium through flow hole that several axis point to heat treated part 5；Several through flow holes in induction coil 4 pass through pipe
Road 2 is communicated with compressed air 1, and is provided with solenoid directional control valve 3 on pipeline 2, disconnects for dead electricity under its normality；Compressed air 1 adds
It is the mixed gas containing ammonia after ammonification gas.
During present invention work, heat treated part 5 is obtained by induction coil 4 and heats rapidly and reach hardening heat；Close
The power supply of induction coil 4 makes solenoid directional control valve 3 be in "on" position simultaneously, and the mixed gas that pipeline 2 is contained within ammonia are sprayed rapidly
It is mapped to the surface of heat treated part 5 so as to obtain the purpose that surface layer hardens.
The present invention makes heat treated part 5 using the mixing blast injection containing ammonia to the surface of heat treated part 5
Be obtained in that faster than natural ventilating air rate of cooling during cooling, the cooling effect slower than cooling oil rate of cooling such that it is able to
The cooling reaching special alloy steel high-frequency surface hardening requires.
Claims (3)
1. a kind of cooling technique of special steel alloy high-frequency quenching, in this technique, device includes special fixture, heat treated part, sense
Answer coil and compressed air container, described heat treated part is arranged in special fixture, described special fixture clamps heat treatment work
Part rotates and mobile；Described induction coil is enclosed within the outside of heat treated part, between described induction coil and heat treated part
Have certain spacing, in described induction coil, be axially arranged with several cooling medium through flow holes, described medium through flow hole one end with
The air valve of compressed gas is connected, and the other end is connected with the space of outer surface；Its technique comprises the following steps：
Step one is by quenching workpiece clamping in the induction coil of induction heating equipment；
Being passed through high frequency induction current in step 2 induction coil makes surface of the work heat rapidly；
When step 3 workpiece surface temperature reaches hardening heat, cut off induction coil power supply；
Step 4 adds quenching medium in surface of the work,
It is characterized in that：
Cooling medium in described step 4 is compressed gas.
2. a kind of special steel alloy high-frequency quenching according to claim 1 cooling technique it is characterised in that：Described compression
Gas is compressed air.
3. a kind of special steel alloy high-frequency quenching according to claim 1 and 2 cooling technique it is characterised in that：Described
Compressed gas are the mixed gas of air and ammonia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016938.8A CN106399642A (en) | 2016-11-18 | 2016-11-18 | Special high-frequency quench cooling process for alloy steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611016938.8A CN106399642A (en) | 2016-11-18 | 2016-11-18 | Special high-frequency quench cooling process for alloy steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106399642A true CN106399642A (en) | 2017-02-15 |
Family
ID=58068599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611016938.8A Pending CN106399642A (en) | 2016-11-18 | 2016-11-18 | Special high-frequency quench cooling process for alloy steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106399642A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844415A (en) * | 2005-04-08 | 2006-10-11 | 沈阳气体压缩机股份有限公司 | 17-4PH steel surface reinforcement method |
| CN201614385U (en) * | 2009-12-02 | 2010-10-27 | 梁百仁 | Numerical control induction quenching machine tool |
| CN101886164A (en) * | 2009-05-13 | 2010-11-17 | 天津市天瑞硬化工程有限公司 | Induction heating controlled quenching technology for gear and machine tool |
| CN101892364A (en) * | 2010-06-08 | 2010-11-24 | 优德精密工业(昆山)有限公司 | High-frequency surface quenching machine |
| CN201793637U (en) * | 2010-05-14 | 2011-04-13 | 陕西巨基实业有限公司 | High-frequency quenching machine tool for shaft part |
| CN102676785A (en) * | 2012-06-08 | 2012-09-19 | 荆州环球汽车零部件制造有限公司 | Induction hardening process capable of hardening hard-alloy cast iron camshaft |
-
2016
- 2016-11-18 CN CN201611016938.8A patent/CN106399642A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844415A (en) * | 2005-04-08 | 2006-10-11 | 沈阳气体压缩机股份有限公司 | 17-4PH steel surface reinforcement method |
| CN101886164A (en) * | 2009-05-13 | 2010-11-17 | 天津市天瑞硬化工程有限公司 | Induction heating controlled quenching technology for gear and machine tool |
| CN201614385U (en) * | 2009-12-02 | 2010-10-27 | 梁百仁 | Numerical control induction quenching machine tool |
| CN201793637U (en) * | 2010-05-14 | 2011-04-13 | 陕西巨基实业有限公司 | High-frequency quenching machine tool for shaft part |
| CN101892364A (en) * | 2010-06-08 | 2010-11-24 | 优德精密工业(昆山)有限公司 | High-frequency surface quenching machine |
| CN102676785A (en) * | 2012-06-08 | 2012-09-19 | 荆州环球汽车零部件制造有限公司 | Induction hardening process capable of hardening hard-alloy cast iron camshaft |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170215 |