CN104357634A - Treatment method of 630 steel - Google Patents
Treatment method of 630 steel Download PDFInfo
- Publication number
- CN104357634A CN104357634A CN201410667302.4A CN201410667302A CN104357634A CN 104357634 A CN104357634 A CN 104357634A CN 201410667302 A CN201410667302 A CN 201410667302A CN 104357634 A CN104357634 A CN 104357634A
- Authority
- CN
- China
- Prior art keywords
- steel
- bar
- steel bar
- conditions
- under
- 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
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a treatment method of 630 steel, which comprises the following steps: carrying out hot rolling, and forging to form a 630 steel bar; carrying out solution treatment on the 630 steel bar at 1000-1100 DEG C, and cooling the bar to room temperature in air; carrying out overaging treatment on the 630 steel bar at 680-740 DEG C, wherein the number of minutes for treatment is determined according to the number of millimeters of the bar diameter; cooling the bar to room temperature in air; carrying out thermal-insulation heating treatment on the 630 steel bar at 1000-1080 DEG C, and cooling the bar to room temperature in air; and carrying out aging treatment on the 630 steel bar at 580-640 DEG C, and cooling the bar to room temperature in air. When the method is used for treating the 630 steel, the ballistic work of the 630 steel at -40 DEG C can be greater than or equal to 45J, thereby enhancing the low-temperature impact resistance of the 630 steel.
Description
Technical field
The present invention relates to a kind of method heat-treating to improve its impact toughness value and intensity to 630 steel.
Background technology
Proportionality limit and the yield strength of austenitic stainless steel are lower, only have 200Mpa, are therefore unfavorable as some structured materials, and martensite type stainless steel can obtain high strength by quenching, temper, can as structured material, but its impelling strength is lower.When requiring the existing solidity to corrosion of material to require again the requirement having tough at low temperatures, Cr-Ni Austenitic stainless steel must be used, at this moment as can the Cr-Ni precipitation hardenable stainless steel of heat treatment reinforcement arise at the historic moment, as the representative steel grade 17-4PH of PH Stainless Steel, it can meet the requirement of intensity, hardness and low-temperature impact toughness after by suitable thermal treatment.
PH Stainless Steel 17-4PH uses solution treatment to form martensite, the martensite of this low-carbon (LC) carries out precipitation hardening process makes it harden, hardening mechanism is that the element solid solution such as element Cu, Al, Mo, Nb of interpolation is in austenite, and solid solubility is little in martensite, strengthen matrix after precipitation, reach the object of precipitation hardening.On the basis of this precipitation hardening up and down, if the requirement of ballistic work >=45 under demand fulfillment-40 DEG C of conditions joule gone back by customer requirement steel under the prerequisite meeting common standard, be difficult to reach this performance requriements by common thermal treatment process with current.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind for the treatment of process of 630 steel, is processed 630 steel by the method, can realize the requirement of 630 steel ballistic work >=45 joule under-40 DEG C of conditions, improve the low temperature impact performance of 630 steel.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the treatment process providing a kind of 630 steel, and it comprises the following steps:
(1) hot rolling, 630 Steel Bar are forged;
(2) 630 Steel Bar after step (1) being completed carry out solution treatment under 1000-1100 DEG C of condition, then by this bar air cooling to room temperature;
(3) 630 Steel Bar after step (2) being completed carry out Wetted constructures under 680 ~ 740 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(4) the 630 Steel Bar Heat preservation process under 1000-1080 DEG C of condition after step (3) being completed, the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(5) 630 Steel Bar after step (4) being completed carry out ageing treatment under 580 ~ 640 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature.
In a preferred embodiment of the present invention, 630 Steel Bar after step (1) being completed in (2) carry out solution treatment under 1060 DEG C of conditions.
In a preferred embodiment of the present invention, 630 Steel Bar after step (2) being completed in (3) carry out Wetted constructures under 710 DEG C of conditions.
In a preferred embodiment of the present invention, the 630 Steel Bar Heat preservation process under 1040 DEG C of conditions after step (3) being completed in (4).
In a preferred embodiment of the present invention, 630 Steel Bar after step (4) being completed in (5) carry out ageing treatment under 610 DEG C of conditions.
The invention has the beneficial effects as follows:
The treatment process of 630 steel of the present invention is by the rational solid solution temperature of setting and aging temperature and out time, the inwall metal box tissue of 630 steel is changed, improve the low temperature impact performance of 630 steel, meet the requirement of 630 steel ballistic work >=45 joule under-40 DEG C of conditions.
Embodiment
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention one:
(1) hot rolling, 630 Steel Bar are forged;
(2) 630 Steel Bar after step (1) being completed carry out solution treatment under 1000 DEG C of conditions, then by this bar air cooling to room temperature;
(3) 630 Steel Bar after step (2) being completed carry out Wetted constructures under 680 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(4) the 630 Steel Bar Heat preservation process under 1000 DEG C of conditions after step (3) being completed, the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(5) 630 Steel Bar after step (4) being completed carry out ageing treatment under 580 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature.
After above-mentioned treating processes, record the following performance data of 630 steel:
| Steel grade | Thermal treatment temp | Rp0.2/Mpa | Rm/Mpa | A/% | Z/% | Hardness/HRC | Ballistic work/J | Experimental temperature/DEG C | Remarks |
| 630 | 1040℃ | / | / | / | / | 35 | / | / | Solid solution |
| 630 | H1150(580℃) | 1000 | 910 | 20 | 56 | 32.0 | 53/46/47 | -40 | Timeliness |
The low-temperature impact resistance of 630 steel can improve, and meets the requirement of 630 steel ballistic work >=45 joule under-40 DEG C of conditions.
Embodiment two:
(1) hot rolling, 630 Steel Bar are forged;
(2) 630 Steel Bar after step (1) being completed carry out solution treatment under 1060 DEG C of conditions, then by this bar air cooling to room temperature;
(3) 630 Steel Bar after step (2) being completed carry out Wetted constructures under 710 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(4) the 630 Steel Bar Heat preservation process under 1040 DEG C of conditions after step (3) being completed, the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(5) 630 Steel Bar after step (4) being completed carry out ageing treatment under 610 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature.
After above-mentioned treating processes, record the following performance data of 630 steel:
| Steel grade | Thermal treatment temp | Rp0.2/Mpa | Rm/Mpa | A/% | Z/% | Hardness/HRC | Ballistic work/J | Experimental temperature/DEG C | Remarks |
| 630 | 1040℃ | / | / | / | / | 35 | / | / | Solid solution |
| 630 | H1150(610℃) | 1000 | 915 | 20 | 56 | 33.0 | 55/47/48 | -40 | Timeliness |
The low-temperature impact resistance of 630 steel can improve, and meets the requirement of 630 steel ballistic work >=45 joule under-40 DEG C of conditions.
630 products are precipitation hardenable steel grade, due to the control fluctuation of composition and the too high impact of hot processing temperature, this steel grade also has part ferrite, can find out according to this material equilibrium phase diagram, along with the rising ferrite of Heating temperature can dissolve in single phase austenite by spreading.Can be that ferrite is maximized when not making grain growth by 1060 DEG C of solution treatment dissolves in austenite, by the Wetted constructures of 680 ~ 740 DEG C, can make precipitation hardening phase (ε-Cu, NbC, CrmCn) full and uniform disperse educt.
For follow-up solid solution provides basic guarantee.By the low temperature solution treatment of 1040 DEG C, precipitation hardening can be made to reintegrate mutually in γ austenite, and crystal grain is crystallization again, forms the austenite structure of compact grained uniform composition, obtains compact grained martensitic stucture in process of cooling.The product that intensity and ballistic work all meet the demands can be obtained by ageing treatment.
Embodiment three:
(1) hot rolling, 630 Steel Bar are forged;
(2) 630 Steel Bar after step (1) being completed carry out solution treatment under 1100 DEG C of conditions, then by this bar air cooling to room temperature;
(3) 630 Steel Bar after step (2) being completed carry out Wetted constructures under 740 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(4) the 630 Steel Bar Heat preservation process under 1080 DEG C of conditions after step (3) being completed, the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(5) 630 Steel Bar after step (4) being completed carry out ageing treatment under 640 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature.
Through above-mentioned process, the low-temperature impact resistance of 630 steel can improve, and under-40 DEG C of conditions, ballistic work reaches 46-47 joule, meets the requirement of 630 steel ballistic work >=45 joule under-40 DEG C of conditions.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a treatment process for 630 steel, is characterized in that, comprises the following steps:
(1) hot rolling, 630 Steel Bar are forged;
(2) 630 Steel Bar after step (1) being completed carry out solution treatment under 1000-1100 DEG C of condition, then by this bar air cooling to room temperature;
(3) 630 Steel Bar after step (2) being completed carry out Wetted constructures under 680 ~ 740 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(4) the 630 Steel Bar Heat preservation process under 1000-1080 DEG C of condition after step (3) being completed, the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature;
(5) 630 Steel Bar after step (4) being completed carry out ageing treatment under 580 ~ 640 DEG C of conditions, and the time of process has how many millimeters namely to process how many minutes to determine according to diameter of rod, then by this bar air cooling to room temperature.
2. the treatment process of 630 steel according to claim 1, is characterized in that, 630 Steel Bar after step (1) being completed in (2) carry out solution treatment under 1060 DEG C of conditions.
3. the treatment process of 630 steel according to claim 1, is characterized in that, 630 Steel Bar after step (2) being completed in (3) carry out Wetted constructures under 710 DEG C of conditions.
4. the treatment process of 630 steel according to claim 1, is characterized in that, the 630 Steel Bar Heat preservation process under 1040 DEG C of conditions after step (3) being completed in (4).
5. the treatment process of 630 steel according to claim 3, is characterized in that, 630 Steel Bar after step (4) being completed in (5) carry out ageing treatment under 610 DEG C of conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667302.4A CN104357634B (en) | 2014-11-21 | 2014-11-21 | A kind of processing method of 630 steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410667302.4A CN104357634B (en) | 2014-11-21 | 2014-11-21 | A kind of processing method of 630 steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104357634A true CN104357634A (en) | 2015-02-18 |
| CN104357634B CN104357634B (en) | 2016-06-08 |
Family
ID=52524940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410667302.4A Active CN104357634B (en) | 2014-11-21 | 2014-11-21 | A kind of processing method of 630 steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104357634B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439870A (en) * | 2018-12-26 | 2019-03-08 | 江阴市恒业锻造有限公司 | The method for improving 17-4PH martensite aged stainless steel forging low-temperature impact work based on organizational controls |
| CN112501406A (en) * | 2020-11-20 | 2021-03-16 | 苏州市吴中不锈钢有限公司 | 1.4542 steel treatment method |
| CN114645117A (en) * | 2022-03-21 | 2022-06-21 | 河南中原特钢装备制造有限公司 | Heat treatment process for 17-4PH material after forging through nitrogen-controlling alloying |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007384A (en) * | 2006-01-26 | 2007-08-01 | 宝山钢铁股份有限公司 | Manufacturing method of 17-4PH steel pipe |
-
2014
- 2014-11-21 CN CN201410667302.4A patent/CN104357634B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007384A (en) * | 2006-01-26 | 2007-08-01 | 宝山钢铁股份有限公司 | Manufacturing method of 17-4PH steel pipe |
Non-Patent Citations (1)
| Title |
|---|
| 赵义 等: "热处理工艺对17-4PH不锈钢力学性能的影响", 《机械工程材料》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109439870A (en) * | 2018-12-26 | 2019-03-08 | 江阴市恒业锻造有限公司 | The method for improving 17-4PH martensite aged stainless steel forging low-temperature impact work based on organizational controls |
| CN112501406A (en) * | 2020-11-20 | 2021-03-16 | 苏州市吴中不锈钢有限公司 | 1.4542 steel treatment method |
| CN114645117A (en) * | 2022-03-21 | 2022-06-21 | 河南中原特钢装备制造有限公司 | Heat treatment process for 17-4PH material after forging through nitrogen-controlling alloying |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104357634B (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MX2017010539A (en) | High-strength, cold-rolled, thin steel sheet and method for manufacturing same. | |
| CN111511936B (en) | Wire rod for cold heading, worked product using the same, and method for manufacturing the same | |
| EP3354757A1 (en) | Process for on-line quenching of seamless steel tube using waste heat and manufacturing method | |
| CN106521338B (en) | A kind of high strength and high hardness steel plate and Flexible Production method | |
| CN103147018B (en) | Austenitic stainless steel forging and production process thereof | |
| CN106222544B (en) | Annular forging piece and its heat treatment method | |
| CN105088081B (en) | The manufacturing process of stabiliser bar | |
| CN105671458A (en) | Non-quenched and tempered medium carbon steel wire having excellent surface hardening thermal treatment performance and manufacturing method thereof | |
| CN103740913B (en) | High temperature forging Martensite Stainless Steel heat treating method | |
| CN109022705A (en) | The heat treatment method of potassium steel casting bucket tooth | |
| CN104357634A (en) | Treatment method of 630 steel | |
| CN104164548B (en) | A kind of thermal treatment process of thick and large section low-carbon low-alloy steel forge piece | |
| US8377235B2 (en) | Process for forming steel | |
| CN113981318A (en) | Preparation method of double-transformation bainitic steel | |
| CN103882294A (en) | Ni-saving type low-temperature steel plate and preparation method thereof | |
| RU2404267C1 (en) | Method of heat treatment of items from chromium tool steel | |
| CN101512022A (en) | Method for preparing steel with low-temperature flexibility | |
| CN109517947A (en) | A kind of preparation method containing manganese TRIP steel in aluminium | |
| CN110218855A (en) | A method of overcoming blade heat-treatment distortion | |
| CN105821343B (en) | A kind of production method of special steel | |
| CN107937681A (en) | A kind of corrosion resistant type plastic mould steel heat treatment process | |
| CN108424999B (en) | A kind of heat treatment process of shallow-tank separator driving chain components | |
| CN109161647A (en) | The heat treatment method of the middle quenched manganese steel steel-casting of carbon | |
| US20150184271A1 (en) | High frequency heat treatment material and method of manufacturing gear using the same | |
| CN104745796B (en) | Production method for improving low-temperature toughness of high-strength thick steel plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |