CN106957992A - A kind of low-temperature steel flange forge piece and its production technology - Google Patents
A kind of low-temperature steel flange forge piece and its production technology Download PDFInfo
- Publication number
- CN106957992A CN106957992A CN201610013786.XA CN201610013786A CN106957992A CN 106957992 A CN106957992 A CN 106957992A CN 201610013786 A CN201610013786 A CN 201610013786A CN 106957992 A CN106957992 A CN 106957992A
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- Prior art keywords
- low
- temperature
- steel flange
- forge piece
- production technology
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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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)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention provides each chemical composition proportion in a kind of low-temperature steel flange forge piece and its production technology, its material：C:0.09-0.12；Si:0.15-0.25；Mn：1.40-1.60；P:≤0.010；S:≤0.005；Cr:≤0.20；Cu:≤0.20；Ni:0.70-0.85；Nb:≤ 0.05, in production technology, utilize 935 DEG C ± 10 DEG C of hardening heat, temperature is heat-treated for 670 DEG C ± 10 DEG C, the low-temperature steel flange forge piece that the present invention is provided, in its materials chemistry constituent, by reducing P, S content come harm reduction, and low-temperature flexibility is improved by increasing Mn and Ni proportions；For in the production technology of low-temperature steel flange forge piece provided by the present invention, the temperature of the heat treatment of quality adjustment condition is higher than the temperature of normalizing+tempering, improves the mechanical performance of low-temperature steel flange forge piece, and low-temperature impact work is significantly improved.
Description
Technical field
The invention mainly relates to metal forging field, more particularly to a kind of low-temperature steel flange forge piece and its production technology.
Background technology
Low-temperature steel is high performance low temperature Low Alloy Steel for Pressure Vessel, had a wide range of applications in industries such as petrochemical industry, communications and transportation, clean energy resourcies, especially in recent years, with the continuous improvement of low-temperature pressure container design standard, the application of low-temperature steel is more and more extensive, to the performance requirement more and more higher of low-temperature steel.
The content of the invention
The present invention provides each chemical composition proportion in a kind of low-temperature steel flange forge piece of low stain high/low temperature toughness, its material：C:0.09-0.12；Si:0.15-0.25 ；Mn ：1.40-1.60 ；P:≤ 0.010；S:≤ 0.005；Cr: ≤ 0.20；Cu:≤ 0.20；Ni:0.70-0.85；Nb:≤ 0.05.
Present invention also offers a kind of production technology of the low-temperature steel flange forge piece for low stain high/low temperature toughness, including smelting, forging, be heat-treated, the heat treatment includes quenching and is tempered, and heat treatment parameter is 935 DEG C ± 10 DEG C of hardening heat, and temperature is 670 DEG C ± 10 DEG C.
It is preferred that, cooled down after quenching using cooling system.
It is preferred that, the cooling system is cooled down using water body, and agitator or the circulatory system are equipped in the cooling system.
Beneficial effects of the present invention：In the low-temperature steel flange forge piece that the present invention is provided, its materials chemistry constituent, by reducing P, S content come harm reduction, and low-temperature flexibility is improved by increasing Mn and Ni proportions；For in the production technology of low-temperature steel flange forge piece provided by the present invention, the temperature of the heat treatment of quality adjustment condition is higher than the temperature of normalizing+tempering, improves the mechanical performance of low-temperature steel flange forge piece, and low-temperature impact work is significantly improved.
Embodiment
The present invention provides each chemical composition proportion in a kind of low-temperature steel flange forge piece of low stain high/low temperature toughness, its material：C:0.09-0.12；Si:0.15-0.25 ；Mn ：1.40-1.60 ；P:≤ 0.010；S:≤ 0.005；Cr: ≤ 0.20；Cu:≤ 0.20；Ni:0.70-0.85；Nb:≤ 0.05, refer to table 1：
Present invention also offers a kind of production technology of the low-temperature steel flange forge piece for low stain high/low temperature toughness, including smelting, forging, be heat-treated, it is described heat treatment include quench and be tempered, it is quenched after heat treatment temperature parameter be 935 DEG C ± 10 DEG C of hardening heat, temperature be 670 DEG C ± 10 DEG C.
It is preferred that, cooled down after quenching using cooling system.
It is preferred that, the cooling system is cooled down using water body, and agitator or the circulatory system are equipped in the cooling system.
By taking 09MnNiD as an example, the material of the composition provided using table 1 is swaged into the testpieces of φ 500 × 150mm sizes, altogether two pieces, and the latter part of forging carries out modifier treatment, that is, carries out 935 DEG C ± 10 DEG C of hardening heat, and temperature is 670 DEG C ± 10 DEG C of heat treatment；Another progress normalizing+temper, heat treatment parameter is 930 DEG C ± 10 DEG C of normalizing temperature, and temperature is 660 DEG C ± 10 DEG C, to mechanical performance, the influence of low-temperature impact work after the heat treatment of quality adjustment condition, as shown in table 2：
The 09MnNiD modifier treatment of table 2 and the comparison of normalizing+temper mechanical performance
It can see from the data of table 2, the tempered sorbite tissue that modifier treatment is produced, its comprehensive mechanical performance is apparently higher than the mechanical performance of normalizing+tempered structure, and low-temperature impact work significantly improves.
The principle and its effect of above-described embodiment only illustrative present patent application, not for limitation present patent application.Any person skilled in the art all can carry out modifications and changes without prejudice under the spirit and scope of present patent application to above-described embodiment.Therefore, those of ordinary skill in the art is completed under without departing from the spirit and technological thought disclosed in present patent application such as all equivalent modifications or change, the claim that should be asked by this patent are covered.
Claims (4)
1. a kind of low-temperature steel flange forge piece, it is characterised in that：Each chemical composition proportion is in its material：C:0.09-0.12；Si:0.15-0.25 ；Mn ：1.40-1.60 ；P:≤ 0.010；S:≤ 0.005；Cr: ≤ 0.20；Cu:≤ 0.20；Ni:0.70-0.85；Nb:≤ 0.05.
2. a kind of production technology for low-temperature steel flange forge piece described in claim 1, including smelt, forge, be heat-treated, the heat treatment includes quenching and is tempered, it is characterised in that：Heat treatment parameter is 935 DEG C ± 10 DEG C of hardening heat, and temperature is 670 DEG C ± 10 DEG C.
3. a kind of production technology for low-temperature steel flange forge piece described in claim 1 according to claim 2, it is characterised in that：Cooled down after quenching using cooling system.
4. a kind of production technology for low-temperature steel flange forge piece described in claim 1 according to claim 3, it is characterised in that：The cooling system is cooled down using water body, and agitator or the circulatory system are equipped in the cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013786.XA CN106957992A (en) | 2016-01-11 | 2016-01-11 | A kind of low-temperature steel flange forge piece and its production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013786.XA CN106957992A (en) | 2016-01-11 | 2016-01-11 | A kind of low-temperature steel flange forge piece and its production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106957992A true CN106957992A (en) | 2017-07-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610013786.XA Pending CN106957992A (en) | 2016-01-11 | 2016-01-11 | A kind of low-temperature steel flange forge piece and its production technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN106957992A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338048A (en) * | 2018-12-26 | 2019-02-15 | 江阴市恒业锻造有限公司 | A method of 09MnNiD steel forgings low-temperature impact work is improved based on organizational controls |
| CN109680218A (en) * | 2019-01-25 | 2019-04-26 | 无锡市法兰锻造有限公司 | A kind of production method improving forging ballistic work |
| CN110724878A (en) * | 2019-10-30 | 2020-01-24 | 鞍钢股份有限公司 | 0.5Ni low-temperature steel and manufacturing method thereof |
| CN114318162A (en) * | 2021-12-27 | 2022-04-12 | 中航卓越锻造（无锡）有限公司 | Flange forging for high-impact-performance water turbine and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789858A (en) * | 2015-03-20 | 2015-07-22 | 宝山钢铁股份有限公司 | Economical low-temperature seamless tube suitable for -75 DEG C and manufacturing method thereof |
-
2016
- 2016-01-11 CN CN201610013786.XA patent/CN106957992A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104789858A (en) * | 2015-03-20 | 2015-07-22 | 宝山钢铁股份有限公司 | Economical low-temperature seamless tube suitable for -75 DEG C and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王松林 等: ""影响09MnNiD 钢锻件低温冲击韧性的因素及对策"", 《大型铸锻件》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338048A (en) * | 2018-12-26 | 2019-02-15 | 江阴市恒业锻造有限公司 | A method of 09MnNiD steel forgings low-temperature impact work is improved based on organizational controls |
| CN109680218A (en) * | 2019-01-25 | 2019-04-26 | 无锡市法兰锻造有限公司 | A kind of production method improving forging ballistic work |
| CN110724878A (en) * | 2019-10-30 | 2020-01-24 | 鞍钢股份有限公司 | 0.5Ni low-temperature steel and manufacturing method thereof |
| CN114318162A (en) * | 2021-12-27 | 2022-04-12 | 中航卓越锻造（无锡）有限公司 | Flange forging for high-impact-performance water turbine and manufacturing method thereof |
| CN114318162B (en) * | 2021-12-27 | 2024-06-04 | 中航卓越锻造（无锡）有限公司 | Flange forging for high-impact-performance water turbine and manufacturing method thereof |
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