CN107385156B - The Strengthening and Toughening composite heat treating method of 30CrMnSiA steel - Google Patents
The Strengthening and Toughening composite heat treating method of 30CrMnSiA steel Download PDFInfo
- Publication number
- CN107385156B CN107385156B CN201710519876.0A CN201710519876A CN107385156B CN 107385156 B CN107385156 B CN 107385156B CN 201710519876 A CN201710519876 A CN 201710519876A CN 107385156 B CN107385156 B CN 107385156B
- Authority
- CN
- China
- Prior art keywords
- strengthening
- low temperature
- heat treating
- quenchings
- composite 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- 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)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a kind of Strengthening and Toughening composite heat treating methods of 30CrMnSiA steel.This method includes high temperature quenching, high tempering, low temperature quenching and lonneal, specifically: 890~920 DEG C of high temperature quenchings, 650~680 DEG C of high temperings are first carried out, then carry out 840~860 DEG C of low temperature quenchings, 200~260 DEG C of lonneals.The process and use suitable temperature that the present invention is quenched and is tempered by reasonable disposition, the performance of resulting materials significantly gets a promotion, and tensile strength Rm reaches 1698MPa~1749MPa, and elongation after fracture A is 9.5%~12.5%, ballistic work AKu2Reach 60.1J~67.9J, the intensity of existing unimach, and have good plasticity and toughness, realize the superhigh intensity Strengthening and Toughening of 30CrMnSiA steel, can satisfy demand of the Modern New product to steel.
Description
Technical field
The present invention relates to heat treatment technics, in particular to a kind of Strengthening and Toughening composite heat treating method of 30CrMnSiA steel.
Background technique
30CrMnSiA steel is one of structural alloy steel.Its heat treatment process is usually quenching+high tempering, makes its acquisition
Preferable comprehensive mechanical property.It quenches after tempering, tensile strength Rm is generally 1080MPa~1300MPa.With science and technology
Progress, many novel products need the tensile strength Rm of material to be increased to 1600MPa or more, while also to have enough modelings
Property and toughness.It can satisfy its requirement according to the novel ultra-high strengths steel such as T250, G50, but its material price is expensive, improves life
Produce cost and product cost.The price of 30CrMnSiA is less expensive, if its mechanical property can be promoted by improving technique, has
Production cost and product cost is greatly reduced in prestige, creates considerable economic benefit and social benefit.
Summary of the invention
The purpose of the present invention is to provide a kind of Compound Heat Treatment sides that can be obviously improved 30CrMnSiA steel Strengthening and Toughening performance
Method.
The technical solution of the present invention is as follows:
A kind of Strengthening and Toughening composite heat treating method of 30CrMnSiA steel, including high temperature quenching, high tempering, low temperature quenching
And lonneal, the described high temperature quenching is using carrying out chilling and quenching after 890~920 DEG C of hardening heat heating and thermal insulation；Institute
The high tempering stated is to be tempered using 650~680 DEG C of tempering temperature；The low temperature quenching is using 840~860 DEG C
Hardening heat quenched；The lonneal is to be tempered using 200~260 DEG C of tempering temperature；Summary are as follows: first
890~920 DEG C of high temperature quenchings, 650~680 DEG C of high temperings are carried out, then carry out 840~860 DEG C of low temperature quenchings, 200~260 DEG C
Lonneal.
Preferably, the quenching of 900~920 DEG C of high temperature, 660~680 DEG C of high temperings are first carried out, then carry out 850~860 DEG C it is low
Temperature quenching, 230~260 DEG C of lonneals.
It is highly preferred that first carrying out 910~920 DEG C of high temperature quenchings, 670~680 DEG C of high temperings, then carry out 850~860 DEG C
Low temperature quenching, 250~260 DEG C of lonneals.
It is worth noting that the soaking time of high temperature quenching and high tempering is according to the size of workpiece according to conventional quenching
It is adjusted with tempering requirements, does not need particularly to be limited, meet general rule or the requirement of the prior art.
The time of low temperature quenching and lonneal should suitably lengthen, and the soaking time of low temperature quenching preferably takes 1.5 times of conventional soaking time
~2 times, the soaking time of lonneal must not be less than 3h, and preferably 3~10 hours.
According to practice, lonneal is used after the quenching of 30CrMnSiA steel, enables to Rm to reach 1600MPa, that is, full
The requirement of sufficient tensile strength, but processing in this way, plasticity and toughness are poor, far from meeting the requirements.In order to improve its toughness, need
Improve its material and refinement crystal grain.The present invention has done Depth Study to its technique, has passed through to realize the General Promotion of its performance
Repeatedly experiment and to experimental result research and analyse and theoretical research, it is found that following three improvement integrate more tribute
It offers:
First is that before product formally quenches, or before product semifinishing, first its material is carried out to quench+height
The pretreatment of temperature tempering, improves material, and material is made to pass through ppolymorphism transformation refinement crystal grain repeatedly；
Second is that using low temperature quenching (or for intercritical hardening) in formal quenching, making its material in the same of quenching strengthening
When, crystal grain is further refined, and material obtains refined crystalline strengthening and toughening；
Third is that being tempered using lower temperature, the temper brittleness area of its material is avoided, its plasticity and toughness are improved.
The significant difference of the present invention and the prior art is embodied in, and quenching and tempering are not that a step is completed, but substep is complete
At, and have stringent restriction to temperature.
The beneficial effects of the present invention are:
The process and use suitable temperature that the present invention is quenched and is tempered by reasonable disposition, the performance of resulting materials is aobvious
Work gets a promotion, and tensile strength Rm reaches 1698MPa~1749MPa, and elongation after fracture A is 9.5%~12.5%, ballistic work
AKu2Reach 60.1J~67.9J, the intensity of existing unimach, and have good plasticity and toughness, realizes 30CrMnSiA
The superhigh intensity Strengthening and Toughening of steel can satisfy demand of the Modern New product to steel.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Specific embodiment
The present invention is described in further details below in conjunction with specific embodiment, but the present invention is not limited thereto.
Embodiment 1
A kind of Strengthening and Toughening composite heat treating method of 30CrMnSiA steel includes the following steps: first to carry out 920 high temperature quenchings,
680 DEG C of high temperings, then 840 low temperature quenchings are carried out, 200 lonneals.
The tensile strength Rm of resulting materials is 1745MPa, and elongation after fracture A is 12.4%, ballistic work AKu2For 67.3J.
Embodiment 2
A kind of Strengthening and Toughening composite heat treating method of 30CrMnSiA steel includes the following steps: first to carry out 900 high temperature quenchings,
660 DEG C of high temperings, then 850 low temperature quenchings are carried out, 230 lonneals.
The tensile strength Rm of resulting materials is 1715MPa, and elongation after fracture A is 11.2%, ballistic work AKu2For 63.7J.
Embodiment 3
A kind of Strengthening and Toughening composite heat treating method of 30CrMnSiA steel includes the following steps: first to carry out 890 high temperature quenchings,
650 DEG C of high temperings, then 860 low temperature quenchings are carried out, 250 lonneals.
The tensile strength Rm of resulting materials is 1706MPa, and elongation after fracture A is 10.8%, ballistic work AKu2For 62.1J.
Embodiment 4
A kind of Strengthening and Toughening composite heat treating method of 30CrMnSiA steel includes the following steps: first to carry out 910 high temperature quenchings,
670 DEG C of high temperings, then 850 low temperature quenchings are carried out, 240 lonneals.
The tensile strength Rm of resulting materials is 1723MPa, and elongation after fracture A is 11.9%, ballistic work AKu2For 64.6J.
From above-described embodiment it is found that using method of the invention, by reasonable disposition quenching and the process being tempered and adopt
With suitable temperature, it just can effectively be obviously improved the performance of resulting materials.
Claims (5)
1. a kind of Strengthening and Toughening composite heat treating method of 30CrMnSiA steel, which is characterized in that including high temperature quenching, high tempering,
Low temperature quenching and lonneal, specifically: 890~920 DEG C of high temperature quenchings, 650~680 DEG C of high temperings are first carried out, then are carried out
840~860 DEG C of low temperature quenchings, 200~260 DEG C of lonneals.
2. the Strengthening and Toughening composite heat treating method of 30CrMnSiA steel according to claim 1, which is characterized in that first carry out
900~920 DEG C of high temperature quenchings, 660~680 DEG C of high temperings, then 850~860 DEG C of low temperature quenchings are carried out, 230~260 DEG C of low temperature
Tempering.
3. the Strengthening and Toughening composite heat treating method of 30CrMnSiA steel according to claim 1, which is characterized in that first carry out
910~920 DEG C of high temperature quenchings, 670~680 DEG C of high temperings, then 850~860 DEG C of low temperature quenchings are carried out, 250~260 DEG C of low temperature
Tempering.
4. the Strengthening and Toughening composite heat treating method of 30CrMnSiA steel according to any one of claims 1 to 3, feature exist
In the low temperature quenching, soaking time is 1.5~2 times of conventional quenching soaking time.
5. the Strengthening and Toughening composite heat treating method of 30CrMnSiA steel according to any one of claims 1 to 3, feature exist
In the lonneal, soaking time is no less than 3h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519876.0A CN107385156B (en) | 2017-06-29 | 2017-06-29 | The Strengthening and Toughening composite heat treating method of 30CrMnSiA steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519876.0A CN107385156B (en) | 2017-06-29 | 2017-06-29 | The Strengthening and Toughening composite heat treating method of 30CrMnSiA steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107385156A CN107385156A (en) | 2017-11-24 |
| CN107385156B true CN107385156B (en) | 2019-01-15 |
Family
ID=60334725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710519876.0A Expired - Fee Related CN107385156B (en) | 2017-06-29 | 2017-06-29 | The Strengthening and Toughening composite heat treating method of 30CrMnSiA steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107385156B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157865A (en) * | 2019-06-05 | 2019-08-23 | 贵州航天林泉电机有限公司 | A kind of heat treatment method of 30CrMnSiA material |
| CN110592330A (en) * | 2019-08-30 | 2019-12-20 | 合肥江航飞机装备股份有限公司 | Processing method of 30CrMnSiA high-strength steel |
| CN110735021B (en) * | 2019-11-08 | 2021-09-14 | 沈阳航天新光集团有限公司 | Quenching process method for high-pressure welded gas cylinder material |
| CN111663084A (en) * | 2020-06-29 | 2020-09-15 | 马鞍山钢铁股份有限公司 | Round steel for titanium-containing 16.9-grade bolt and production method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363694A (en) * | 2001-01-10 | 2002-08-14 | 江南机器厂 | Heat treating technology of 30CrMnSi steel for higher toughness and antiwear nature |
| CA2462320A1 (en) * | 2004-03-29 | 2005-09-29 | Algoma Tubes Inc. | Steel tube highly resistant to the cracking due to tensions in a medium containing hydrogen sulfide and method to produce such tube |
| CN102660712A (en) * | 2012-06-08 | 2012-09-12 | 黄凯敏 | Improved 30CrMnSi steel |
| CN104070329A (en) * | 2014-06-30 | 2014-10-01 | 成都高普石油工程技术有限公司 | Processing technology for claws on petroleum drilling drill bit |
| CN104805451A (en) * | 2015-03-31 | 2015-07-29 | 西安煤矿机械有限公司 | Heat processing technology for improving impact energy of 20CrNiMo alloy steel |
| CN105238911A (en) * | 2015-11-16 | 2016-01-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Steel grain refining heat treatment method for heavy-load locomotive gear |
| CN106521356A (en) * | 2016-11-10 | 2017-03-22 | 钢铁研究总院 | High-strength high-toughness corrosion-resistant chain steel and heat treatment method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07228919A (en) * | 1994-02-17 | 1995-08-29 | Kubota Corp | Heat treatment method for base stock for structural use |
| US20140283960A1 (en) * | 2013-03-22 | 2014-09-25 | Caterpillar Inc. | Air-hardenable bainitic steel with enhanced material characteristics |
-
2017
- 2017-06-29 CN CN201710519876.0A patent/CN107385156B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363694A (en) * | 2001-01-10 | 2002-08-14 | 江南机器厂 | Heat treating technology of 30CrMnSi steel for higher toughness and antiwear nature |
| CA2462320A1 (en) * | 2004-03-29 | 2005-09-29 | Algoma Tubes Inc. | Steel tube highly resistant to the cracking due to tensions in a medium containing hydrogen sulfide and method to produce such tube |
| CN102660712A (en) * | 2012-06-08 | 2012-09-12 | 黄凯敏 | Improved 30CrMnSi steel |
| CN104070329A (en) * | 2014-06-30 | 2014-10-01 | 成都高普石油工程技术有限公司 | Processing technology for claws on petroleum drilling drill bit |
| CN104805451A (en) * | 2015-03-31 | 2015-07-29 | 西安煤矿机械有限公司 | Heat processing technology for improving impact energy of 20CrNiMo alloy steel |
| CN105238911A (en) * | 2015-11-16 | 2016-01-13 | 南车戚墅堰机车车辆工艺研究所有限公司 | Steel grain refining heat treatment method for heavy-load locomotive gear |
| CN106521356A (en) * | 2016-11-10 | 2017-03-22 | 钢铁研究总院 | High-strength high-toughness corrosion-resistant chain steel and heat treatment method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "两次淬火对 35CrMnSi 钢抗拉强度的影响";张绪平 等;《热处理》;20111231;第45-48页 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107385156A (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107385156B (en) | The Strengthening and Toughening composite heat treating method of 30CrMnSiA steel | |
| CN103266212B (en) | Thermal treatment technology for improving low-temperature impact toughness of 25Cr2Ni4MoV steel forging | |
| UA119459C2 (en) | Method for manufacturing a high strength steel sheet and sheet obtained | |
| CN104694863B (en) | A kind of heat treatment method of titanium alloy | |
| CN106222544A (en) | Annular forging piece and heat treatment method thereof | |
| CN104593573A (en) | Combined thermomechanical treatment strengthening method for efficiently improving strength and toughness of non-quenched and tempered steel | |
| CN106148651A (en) | Containing Al joint Co type high specific strength Secondery-hardening Ultrahigh Strength Steel and preparation method | |
| CN104911499B (en) | Cu strengthens Co free Secondery-hardening Ultrahigh Strength Steels and preparation method | |
| US8377235B2 (en) | Process for forming steel | |
| CN1609238A (en) | Softening annealing heat treating method for 1Cr17Ni2 stainless steel | |
| CN102181613A (en) | Heat treatment method for large-scale Cr12Mov workpiece | |
| CN108220540A (en) | A kind of G50 materials penetration shells heat-treatment technology method | |
| CN1974802A (en) | Hardness gradient tempering process for 6CrNiSiMnMoV steel | |
| CN108866443B (en) | Normalizing type low-yield-ratio high-strength steel plate and preparation method thereof | |
| CN103397288A (en) | Machining process of zinc-copper with mechanical properties controlled by machining rate | |
| CN105525077A (en) | Heating processing technology for improving mechanical property of spring steel | |
| CN111041178B (en) | Preparation method of high-strength high-toughness double-phase steel by circulating rolling | |
| CN104694834B (en) | Thermal treatment method of high-strength corrosion resistant steel special for anti-theft window frame | |
| CN102876872A (en) | Softening method for spherical tissue of 0Cr17Ni4Cu4Nb supporting plate self-locking nut | |
| CN106521107B (en) | A kind of novel spheroidizing method of low-carbon bainite steel | |
| CN103820608B (en) | Heat treating method and the 35CrMnSi steel that temper brittleness improves toughness eliminated by 35CrMnSi steel | |
| CN112760465A (en) | Heat treatment method for 410 stainless steel | |
| CN102676939B (en) | Thermal treatment process for 18Cr17Ni2 modified stainless steel material | |
| CN103849753B (en) | YH31 material piston ring isothermal quenching technique | |
| CN102864287A (en) | Strengthening and toughening heat treatment method of hot work die steel 4Cr5MoSiV1 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 Termination date: 20200629 |