CN102605159A - Waste heat temperature control quenching process method for front axle of large-scale vehicle - Google Patents
Waste heat temperature control quenching process method for front axle of large-scale vehicle Download PDFInfo
- Publication number
- CN102605159A CN102605159A CN2012100508113A CN201210050811A CN102605159A CN 102605159 A CN102605159 A CN 102605159A CN 2012100508113 A CN2012100508113 A CN 2012100508113A CN 201210050811 A CN201210050811 A CN 201210050811A CN 102605159 A CN102605159 A CN 102605159A
- Authority
- CN
- China
- Prior art keywords
- forging
- quenching
- temperature
- temperature control
- waste heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention relates to a waste heat temperature control quenching process method for a front axle of a large-scale vehicle, which mainly comprises the following steps of: determining a forging temperature control curve; determining a transit time interval before a forging enters water; determining forging quenching time; strictly controlling the shock cooling temperature in the temperature control process; and after the temperature of the forging is below 650 DEG C, inputting the forging into a quenching furnace to heat. The waste heat temperature control quenching process method has the beneficial effects that: by adopting the waste heat temperature control thermal treatment process, i.e. refining forging grains by a temperature control mode, the process defects of large grains, nonuniform tissue hardness, large quenching deformation, large quenching tearing tendency and the like in the traditional waste heat quenching process are prevented, so that the process quality is improved and the thermal treatment defect ratio is reduced; the impact of instability of a forging process to waste heat quenching process parameters can be prevented, the consistence of the temperature of the forging before quenching is ensured, the consistence of the quenching time interval is ensured, and the quality and stability of the thermal treatment process are promoted; and by controlling the quenching time of the forging, the forging which exits the water has higher temperature and can be prevented from being cracked.
Description
Technical field
The present invention relates to forge thermal treatment process technology, relate in particular to a kind of can be before ton hotdie forging press postorder carries out full-sized car forging shaft waste heat temperature control quenching process.
Background technology
For forging shaft before the full-sized car, because it has the I-shaped cross-section of curved shape, belong to major axis swaged forging part, this makes along the variation in axis of bending cross section thinner than the web in big and cross section, rib is narrow and dark, especially is embodied in the supporting plate place; Therefore, say then comparatively complicacy from primary surface, weight is between 100-140kg, and common forging post-heat-treated technology is quenched for forging the back direct entering quenching tank that rolls off the production line, or forges with air cooling, repeats to be heated to quenching temperature then and quenches.If this thermal treatment process more than adopting; Its treatment process is: front axle forges the back temperature at 950 ℃-100 ℃, directly gets in the quenching tank, and the timed interval to the entering quenching tank after forging is uncertain; Cool time is 2-4 minute, and the forging temperature is below 100 ℃ after the water outlet.This thermal treatment process, because forging quenching temperature and time are all inconsistent, the cool time is longer, and temperature is low excessively after the water outlet, and forging generation distortion and rimose ratio are higher; In addition, also exist big, the more high defective of fraction defective of processing quality difference of technology instability, forging.
Summary of the invention
To above defective; The present invention provides a kind of defective of being convenient to solve traditional immediate quenching technology, help improving processing quality, reduce the thermal treatment fraction defective, can improve the full-sized car front axle waste heat temperature control quenching process of technology stability, to solve many deficiencies of prior art.
For realizing above-mentioned purpose, the present invention adopts following technical scheme:
A kind of full-sized car front axle waste heat temperature control quenching process mainly may further comprise the steps:
(1) carry out forging temperature control curve design and confirm:
1. after the forging process for fuel under 950 ℃ of high temperature through refrigerating unit cool quickly to 400 ℃-650 ℃;
2. after accomplishing cool quickly, forging is sent into quenching furnance by travelling belt and is heated to 850 ℃;
3. after the forging temperature reaches 850 ℃, come out of the stove after being incubated 30 minutes through quenching furnance and quench;
(2) carry out the transhipment timed interval design before the forging entry and confirming: for guarantee forging quench before temperature consistent, forging was controlled at 30 seconds from quenching furnance quenching tank cool time of coming out of the stove to;
(3) carry out forging cool time design and confirming: after the forging entry, quenching is controlled at 40-50 second total time, guarantee forging quenching water outlet like this after temperature at 300 ℃;
(4) strict control chilling temperature in the temperature control process gets into the quenching furnance heating again after forging reaches below 650 ℃.
The beneficial effect of full-sized car front axle waste heat temperature control quenching process of the present invention is: through adopting the thermal treatment process of this waste heat temperature control; Promptly through temperature control method refinement forging crystal grain; Prevented to occur easily in traditional immediate quenching technology crystal grain thick, organize that hardness is inhomogeneous, defective workmanship such as quenching strain is big, the hardening break tendency is big; So then improve processing quality, reduced the thermal treatment fraction defective; Can prevent the impact of forging process instability to immediate quenching processing parameter (like quenching temperature), guarantee that the preceding temperature of forging quenching is consistent, the cool time is consistent at interval, has promoted thermal treatment process quality and stability; Through the control forging cool time, make that the forging temperature is higher after the water outlet, can prevent cracking.
Description of drawings
According to accompanying drawing the present invention is done further explain below.
Fig. 1 is the curve synoptic diagram of existing quenching process;
Fig. 2 is the waste heat temperature control quenching temperature curve synoptic diagram of the said full-sized car front axle of embodiment of the invention waste heat temperature control quenching process.
Embodiment
Shown in Fig. 1-2; The described full-sized car front axle of embodiment of the invention waste heat temperature control quenching process mainly comprises following principle: at first, and through the mode of the high warm forging of cool quickly; " ferrite-pearlite " in quenching process changes and the reheat austenitic transformation; Twice recrystallization process, refinement crystal grain, prevented that crystal grain is thick; Then, through reheat samming in the stove, improved temperature homogeneity, the surface that makes forging go into before quenching tank quenches is consistent with the heart temperature, and the temperature of different forging is consistent, through this innovative approach, has promoted thermal treatment process quality and stability; At last, the cool time of forging in quenching tank is not 2-4 minute of common technology, but accurately is controlled within 1 minute, and the forging temperature is about 300 ℃ after the water outlet.
The described full-sized car front axle of embodiment of the invention waste heat temperature control quenching process mainly may further comprise the steps:
(1) carry out forging temperature control curve design and confirm:
1. after the forging process for fuel under 950 ℃ of high temperature through refrigerating unit cool quickly to 400 ℃-650 ℃;
2. after accomplishing cool quickly, forging is sent into quenching furnance by travelling belt and is heated to 850 ℃;
3. after the forging temperature reaches 850 ℃, come out of the stove after being incubated 30 minutes through quenching furnance and quench;
(2) carry out the transhipment timed interval design before the forging entry and confirming: for guarantee forging quench before temperature consistent, forging was controlled at 30 seconds from quenching furnance quenching tank cool time of coming out of the stove to;
(3) carry out forging cool time design and confirming: after the forging entry, quenching is controlled at 40-50 second total time, guarantee forging quenching water outlet like this after temperature at 300 ℃;
(4) strict control chilling temperature in the temperature control process gets into the quenching furnance heating again after forging reaches below 650 ℃, and quench pitch time and cool time all are strict controlled in the processing parameter of regulation.
Above embodiment is more preferably embodiment a kind of of the present invention, and common variation that those skilled in the art carry out in present technique scheme scope and replacement should be included in protection scope of the present invention.
Claims (1)
1. a full-sized car front axle waste heat temperature control quenching process is characterized in that, mainly may further comprise the steps:
(1) carry out forging temperature control curve design and confirm:
1. after the forging process for fuel under 950 ℃ of high temperature through refrigerating unit cool quickly to 400 ℃-650 ℃;
2. after accomplishing cool quickly, forging is sent into quenching furnance by travelling belt and is heated to 850 ℃;
3. after the forging temperature reaches 850 ℃, come out of the stove after being incubated 30 minutes through quenching furnance and quench;
(2) carry out the transhipment timed interval design before the forging entry and confirming: for guarantee forging quench before temperature consistent, forging was controlled at 30 seconds from quenching furnance quenching tank cool time of coming out of the stove to;
(3) carry out forging cool time design and confirming: after the forging entry, quenching is controlled at 40-50 second total time, guarantee forging quenching water outlet like this after temperature at 300 ℃;
(4) strict control chilling temperature in the temperature control process gets into the quenching furnance heating again after forging reaches below 650 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050811.3A CN102605159B (en) | 2012-03-01 | 2012-03-01 | Waste heat temperature control quenching process method for front axle of large-scale vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050811.3A CN102605159B (en) | 2012-03-01 | 2012-03-01 | Waste heat temperature control quenching process method for front axle of large-scale vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102605159A true CN102605159A (en) | 2012-07-25 |
| CN102605159B CN102605159B (en) | 2014-03-12 |
Family
ID=46522919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210050811.3A Expired - Fee Related CN102605159B (en) | 2012-03-01 | 2012-03-01 | Waste heat temperature control quenching process method for front axle of large-scale vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102605159B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937933A (en) * | 2014-04-01 | 2014-07-23 | 安庆市吉安汽车零件锻轧有限公司 | Control of process for 45 steel and 50 steel automobile front axles and method thereof |
| CN103981348A (en) * | 2014-04-17 | 2014-08-13 | 中国航空工业集团公司沈阳飞机设计研究所 | 16Co14Ni10Cr2Mo steel large-part heat-treatment deformation control method |
| CN105671252A (en) * | 2016-04-01 | 2016-06-15 | 陕西奥邦锻造有限公司 | One-time forging and pressing molding waste heat hardening and tempering technology for automobile front axle |
| CN105969949A (en) * | 2016-06-02 | 2016-09-28 | 溧阳市金昆锻压有限公司 | 18CrNiMo7-6 gear shaft forging preheating isothermal annealing process |
| CN108441606A (en) * | 2018-03-30 | 2018-08-24 | 湖北神力锻造有限责任公司 | A kind of hardening and tempering process method in continuous gas heat-treatment furnace |
| CN108774672A (en) * | 2018-07-27 | 2018-11-09 | 庆铃汽车（集团）有限公司 | A method of utilizing forging part waste heat rapid heating and quenching |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100648A (en) * | 1985-04-01 | 1986-03-10 | 鞍山钢铁公司 | The high highly malleablized thermal treatment process and the equipment of structure iron |
| CN1421541A (en) * | 2001-11-29 | 2003-06-04 | Ntn株式会社 | Bearing parts, Heat treatment method of bearing parts and rolling bearing |
| JP2005201349A (en) * | 2004-01-15 | 2005-07-28 | Ntn Corp | Rolling bearing and heat treatment method of steel |
| CN101096745A (en) * | 2006-06-28 | 2008-01-02 | 宝山钢铁股份有限公司 | Composite high-strength high-ductility hardened and tempered steel and manufacturing method thereof |
| JP2008297620A (en) * | 2007-06-04 | 2008-12-11 | Nachi Fujikoshi Corp | Method for quenching high carbon-chromium bearing steel, high carbon-chromium bearing steel and bearing part and rolling bearing |
-
2012
- 2012-03-01 CN CN201210050811.3A patent/CN102605159B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100648A (en) * | 1985-04-01 | 1986-03-10 | 鞍山钢铁公司 | The high highly malleablized thermal treatment process and the equipment of structure iron |
| CN1421541A (en) * | 2001-11-29 | 2003-06-04 | Ntn株式会社 | Bearing parts, Heat treatment method of bearing parts and rolling bearing |
| JP2005201349A (en) * | 2004-01-15 | 2005-07-28 | Ntn Corp | Rolling bearing and heat treatment method of steel |
| CN101096745A (en) * | 2006-06-28 | 2008-01-02 | 宝山钢铁股份有限公司 | Composite high-strength high-ductility hardened and tempered steel and manufacturing method thereof |
| JP2008297620A (en) * | 2007-06-04 | 2008-12-11 | Nachi Fujikoshi Corp | Method for quenching high carbon-chromium bearing steel, high carbon-chromium bearing steel and bearing part and rolling bearing |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103937933A (en) * | 2014-04-01 | 2014-07-23 | 安庆市吉安汽车零件锻轧有限公司 | Control of process for 45 steel and 50 steel automobile front axles and method thereof |
| CN103981348A (en) * | 2014-04-17 | 2014-08-13 | 中国航空工业集团公司沈阳飞机设计研究所 | 16Co14Ni10Cr2Mo steel large-part heat-treatment deformation control method |
| CN103981348B (en) * | 2014-04-17 | 2016-02-03 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of 16Co14Ni10Cr2Mo steel heavy parts method for controlling heat treatment deformation |
| CN105671252A (en) * | 2016-04-01 | 2016-06-15 | 陕西奥邦锻造有限公司 | One-time forging and pressing molding waste heat hardening and tempering technology for automobile front axle |
| CN105969949A (en) * | 2016-06-02 | 2016-09-28 | 溧阳市金昆锻压有限公司 | 18CrNiMo7-6 gear shaft forging preheating isothermal annealing process |
| CN108441606A (en) * | 2018-03-30 | 2018-08-24 | 湖北神力锻造有限责任公司 | A kind of hardening and tempering process method in continuous gas heat-treatment furnace |
| CN108441606B (en) * | 2018-03-30 | 2020-01-14 | 湖北神力锻造有限责任公司 | Quenching and tempering process method in continuous gas heat treatment furnace |
| CN108774672A (en) * | 2018-07-27 | 2018-11-09 | 庆铃汽车（集团）有限公司 | A method of utilizing forging part waste heat rapid heating and quenching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102605159B (en) | 2014-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102605159A (en) | Waste heat temperature control quenching process method for front axle of large-scale vehicle | |
| CN104946870A (en) | Heat treatment method for strength of 28CrMoNiV steel capable of improving industrial steam turbine rotor forge piece | |
| CN103361567B (en) | A kind of pressurized-water reactor nuclear power plant potentiostat steel and manufacture method thereof | |
| CN102899460A (en) | Heat treatment method for martensitic stainless steel forging module | |
| CN101905244B (en) | Method for producing mandrel by utilizing 28NiCrMoV steel as raw material | |
| CN103421940A (en) | Technological method for AISI4140 and AISI 4340 constructional steel forged piece quenching and tempering through one-time thermal cycling | |
| CN108356189B (en) | Cogging forging method of 2507 super duplex stainless steel casting blank | |
| CN105522085A (en) | Manufacturing method for large section forgings of high-speed tool steel | |
| CN110684885B (en) | Forging control method for uniformly refining grain size of forge piece | |
| CN101906518B (en) | Post-forging heat treatment process for nickeliferous dilute alloy round steel | |
| CN106636590B (en) | A kind of medium carbon steel thermo-mechanical processi method of alternative modifier treatment | |
| CN102517433A (en) | Heat treatment method of high-strength wear plates | |
| CN105734249A (en) | Method for refining grain size of large 1Cr11Ni2W2MoV shaft forge pieces | |
| CN107442721A (en) | A kind of warm and hot forging technique of mould | |
| CN105200267A (en) | Pure nickel N6 for lithium battery rivets and production method thereof | |
| CN103753116A (en) | Method for manufacturing working roll of sendzimir mill | |
| CN107641765A (en) | A kind of nuclear power station integration heap top component forging and its manufacturing process | |
| CN104451100A (en) | Heat treatment method of seamless steel pipe | |
| CN113322368A (en) | Manufacturing method for eliminating overheating of 35CrNi3MoV large-scale cylinder forging | |
| CN107245565A (en) | The stress relief annealing method of the effective steel continuous casting round bloom of high-pressure boiler | |
| CN107470357A (en) | A kind of low carbon steel rolling and control cooling means | |
| CN114350969B (en) | Manufacturing method of stainless steel bar for liquid hydrogen storage device | |
| CN103555895A (en) | Method for refining surface grains of 2Cr10NiMoVNb stainless steel forgings through quenching three times | |
| CN109022738A (en) | A kind of preparation method of low-temperature impact-resistant CrMo alloy steel forging circle | |
| CN106623712A (en) | Forming method of 40Cr15Mo2VN high-nitrogen stainless steel forged component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20170301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |