CN109518096A - A kind of method of spontaneity porous enhancing potassium steel fatigue resistance - Google Patents
A kind of method of spontaneity porous enhancing potassium steel fatigue resistance Download PDFInfo
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- CN109518096A CN109518096A CN201811606352.6A CN201811606352A CN109518096A CN 109518096 A CN109518096 A CN 109518096A CN 201811606352 A CN201811606352 A CN 201811606352A CN 109518096 A CN109518096 A CN 109518096A
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- potassium steel
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
Abstract
A kind of method of spontaneity porous enhancing potassium steel fatigue resistance, the invention belongs to technical field of heat treatment, and this method comprises the following steps: (1) using vacuum induction melting cast molding, the casting cooling rate of casting is 20 ~ 50 DEG C/min；(2) by 1305 ~ 1355 DEG C after potassium steel molding, heat preservation a period of time, water cooling to room temperature；(3) in terms of potassium steel thickest size, 1.5 ~ 3h of every 10mm soaking time.Heat treatment method provided by the invention, binding constituents design, makes to spontaneously form large quantity micropore hole in potassium steel by heat treatment, hinders crack Propagation, achievees the effect that porous enhances potassium steel fatigue resistance.
Description
Technical field
The present invention relates to a kind of metallurgical methods, more particularly to a kind of spontaneous porous enhancing potassium steel fatigue resistance
Method.
Background technique
Fatigability, which refers in use, generates fatigue due to by the repeated action of various stress, makes the physical mechanical property of product
It gradually degenerates, generates breach, heat, removing, destruction etc., so that finally losing the performance of use value.The destruction of fatigue of materials
Process is caused by varying stress, is gradually changed at weakness zone tissue and damage accumulation and is caused to crack, by crackle
Gradually extension causes final material to be broken.The approach for improving Steel material fatigue behaviour at present mainly has: improving structure by magnetization
Fatigue behaviour；Improve low cycle fatigue property by refinement steel crystal grain；It is tired by the low week that trace magnesium and zirconium improvement steel is added
Labor performance.These methods can be improved the ability of material anti-crack generation, the germinating phase that delay material cracks, to reach
Improve the purpose of steel anti-fatigue performance.
Summary of the invention
The purpose of the present invention is to provide a kind of method of spontaneous porous enhancing potassium steel fatigue resistance, the present invention is logical
The ingredient design for crossing metallurgy, by introducing B and N element, while the content of strict control Nb, Ti, Al and V, knot into potassium steel
The control for closing preparation technology parameter makes formation hole spontaneous in potassium steel, and hole diameter is at 1-3 μm, and even dispersion point
Cloth, the presence of the hole can effectively be passivated fatigue crack, and crackle is hindered to expand, and reach the mesh of enhancing potassium steel fatigue resistance
's.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of method of spontaneity porous enhancing potassium steel fatigue resistance, the method includes preparing spontaneous porous Gao Meng
The alloying component of steel is as follows:
B:0.005 ~ 0.02%；N:0.02 ~ 0.05%；Nb:< 0.01%；Ti:< 0.001%；Al:< 0.02%；V:< 0.02%, steel
For middle C, Si, Mn, Cr, Mo element according to requiring voluntarily to adjust, surplus is Fe and impurity, the impurity are as follows: P≤0.01%；S≤
0.001%；Cu≤0.02%；
The preparation of potassium steel uses vacuum induction melting cast molding, and the casting cooling rate of casting is 20 ~ 50 DEG C/min；It is high
1305 ~ 1355 DEG C are heated after manganese steel molding, keeps the temperature a period of time, water cooling to room temperature, in terms of potassium steel thickest size, often
10mm soaking time 3-6h.
A kind of method of described spontaneous porous enhancing potassium steel fatigue resistance, after potassium steel moulding by casting, casting
Casting cooling rate be 30 DEG C/min.
The method of a kind of spontaneous porous enhancing potassium steel fatigue resistance, with potassium steel thickest size
Meter, by 1320 DEG C of heat preservation 0.5h/mm after potassium steel molding.
The advantages and effects of the present invention are:
1, the present invention is by the ingredient design of metallurgy, by introducing B and N element into potassium steel, while strict control Nb, Ti,
The content of Al and V makes formation hole spontaneous in potassium steel in conjunction with the control of preparation technology parameter, hole diameter at 1-3 μm,
And even dispersion is distributed, and the presence of the hole can effectively be passivated fatigue crack, and crackle is hindered to expand, and reaches enhancing Gao Meng
The purpose of steel fatigue resistance.B and N of the present invention are cheap element, and additional amount is less, can be improved in minimum amplitude at
This, while the fatigability of high violent steel is improved by a relatively large margin.
2, core of the invention content be by introducing N and B element, formed in the metallurgical process of high violent steel diameter be 1 ~
3 μm of hole, and Dispersed precipitate is in the base, and this method is easy to operate, simple process, will not cause volume in process of production
Outer man power and material's consumption, and can achieve the effect that preferably to enhance fatigability.
Detailed description of the invention
Fig. 1 is the hole distribution in embodiment 1 in the potassium steel matrix through preparing；
Fig. 2 is the hole distribution in embodiment 2 in the potassium steel matrix through preparing.
Specific embodiment
The following describes the present invention in detail with reference to examples.
A kind of method of spontaneity porous enhancing potassium steel fatigue resistance, the wherein alloying component requirement of potassium steel:
B:0.005 ~ 0.02%；N:0.02 ~ 0.05%；Nb:< 0.01%；Ti:< 0.001%；Al:< 0.02%；V:< 0.02%, steel
For the elements such as middle C, Si, Mn, Cr, Mo according to requiring voluntarily to adjust, surplus is Fe and impurity, the impurity are as follows: P≤0.01%；S
≤0.001%；Cu≤0.02%.
Preparation step is as follows:
(1) vacuum induction melting cast molding is used, the casting cooling rate of casting is 20 ~ 50 DEG C/min；
(2) 1305 ~ 1355 DEG C are heated after potassium steel molding, keeps the temperature a period of time, water cooling to room temperature；
(3) in terms of potassium steel thickest size, every 10mm soaking time 3-6h.
Preferably, after potassium steel moulding by casting, the casting cooling rate of casting is 30 DEG C/min.
Preferably, in terms of potassium steel thickest size, 1320 DEG C of heat preservation 0.5h/mm are heated after potassium steel molding.
In general, the main path for improving potassium steel anti-fatigue performance is the ability for improving anti-crack and generating, postpone in material
The germinating phase that portion cracks.The present invention uses another way, that is, is passivated established fatigue crack, hinders opening up for crackle
Exhibition achievees the purpose that improve high violent steel anti-fatigue performance.Mentality of designing of the invention is by introducing B and N member into potassium steel
Element, the content of strict control Nb, Ti, Al and V make formation hole spontaneous in potassium steel in conjunction with the control of preparation technology parameter,
Its hole diameter is at 1-3 μm, and even dispersion is distributed, and the presence of the hole can effectively be passivated fatigue crack, hinder to split
Line is expanded, and achievees the purpose that enhance potassium steel fatigue resistance.
In the specific implementation process, for the present invention by using moulding by casting is just refined in vaccum sensitive stove, the casting of casting is cold
But rate is 20 ~ 50 DEG C/min；1305 ~ 1355 DEG C are heated after potassium steel molding, keeps the temperature a period of time, water cooling to room temperature；With height
Manganese steel thickest size meter, every 10mm soaking time 3-6h.The alloying component requirement of the potassium steel are as follows:
B:0.005 ~ 0.02%；N:0.02 ~ 0.05%；Nb:< 0.01%；Ti:< 0.001%；Al:< 0.02%；V:< 0.02%, steel
For the elements such as middle C, Si, Mn, Cr, Mo according to requiring voluntarily to adjust, surplus is Fe and impurity, the impurity are as follows: P≤0.01%；S
≤0.001%；Cu≤0.02%.
Below by specific embodiment, the present invention is described in more detail.
Embodiment 1:
In the present embodiment, a kind of spontaneity porous enhancing potassium steel chemical composition by weight percentage are as follows:
C:1.2%；Si:0.95%；Mn:14.1%；Cr:0.02%；Mo:0.2%；V:0.01%；Nb:0.005%；N:0.025%；Ti:
0.0005%；B:0.006%, surplus are Fe and impurity, the impurity are as follows: P≤0.01%；S≤0.001%；Cu≤0.02%.
In the present embodiment, a kind of method and its preparation of spontaneity porous enhancing potassium steel fatigue resistance, steps are as follows:
(1) vacuum induction melting cast molding is used, the casting cooling rate of casting is 25 DEG C/min；
(2) 1315 DEG C are heated after potassium steel molding, keeps the temperature a period of time, water cooling to room temperature；
(3) in terms of potassium steel thickest size, every 10mm soaking time 3h.
Embodiment 2:
In the present embodiment, a kind of spontaneity porous enhancing potassium steel chemical composition by weight percentage are as follows:
C:1.3%；Si:0.89%；Mn:13.5%；Cr:0.05%；Mo:0.5%；V:0.005%；Nb:0.02%；N:0.048%；Ti:
0.0002%；B:0.019%, surplus are Fe and impurity, the impurity are as follows: P≤0.01%；S≤0.001%；Cu≤0.02%.
In the present embodiment, a kind of method and its preparation of spontaneity porous enhancing potassium steel fatigue resistance, steps are as follows:
(1) vacuum induction melting cast molding is used, the casting cooling rate of casting is 45 DEG C/min；
(2) 1354 DEG C are heated after potassium steel molding, keeps the temperature a period of time, water cooling to room temperature；
(3) in terms of potassium steel thickest size, every 10mm soaking time 6h.
Claims (3)
1. a kind of method of spontaneity porous enhancing potassium steel fatigue resistance, characterized in that spontaneous the method includes preparing
The alloying component of property porous potassium steel is as follows:
B:0.005 ~ 0.02%；N:0.02 ~ 0.05%；Nb:< 0.01%；Ti:< 0.001%；Al:< 0.02%；V:< 0.02%, steel
For middle C, Si, Mn, Cr, Mo element according to requiring voluntarily to adjust, surplus is Fe and impurity, the impurity are as follows: P≤0.01%；S≤
0.001%；Cu≤0.02%；
The preparation of potassium steel uses vacuum induction melting cast molding, and the casting cooling rate of casting is 20 ~ 50 DEG C/min；It is high
1305 ~ 1355 DEG C are heated after manganese steel molding, keeps the temperature a period of time, water cooling to room temperature, in terms of potassium steel thickest size, often
10mm soaking time 3-6h.
2. the method for a kind of spontaneous porous enhancing potassium steel fatigue resistance described in accordance with the claim 1, it is characterized in that: high
After manganese steel moulding by casting, the casting cooling rate of casting is 30 DEG C/min.
3. a kind of method of spontaneous porous enhancing potassium steel fatigue resistance described in accordance with the claim 1, it is characterized in that: with
Potassium steel thickest size meter, by 1320 DEG C of heat preservation 0.5h/mm after potassium steel molding.
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| CN201811606352.6A CN109518096A (en) | 2018-12-27 | 2018-12-27 | A kind of method of spontaneity porous enhancing potassium steel fatigue resistance |
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| CN201811606352.6A CN109518096A (en) | 2018-12-27 | 2018-12-27 | A kind of method of spontaneity porous enhancing potassium steel fatigue resistance |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01129836A (en) * | 1987-11-13 | 1989-05-23 | Canon Inc | Ultrasonic eye axial length meter |
| JPH08209296A (en) * | 1995-02-01 | 1996-08-13 | Nippon Steel Corp | High tensile strength steel plate for welding structural use excellent in fatigue strength of welded joint |
| JP2004027334A (en) * | 2002-06-28 | 2004-01-29 | Jfe Steel Kk | Steel for induction tempering and method of producing the same |
| CN104321456A (en) * | 2013-02-08 | 2015-01-28 | 新日铁住金不锈钢株式会社 | Stainless steel brake disc and method for manufacturing same |
| CN107406942A (en) * | 2015-03-24 | 2017-11-28 | 杰富意钢铁株式会社 | Tufftride steel and part and its manufacture method |
| CN108677088A (en) * | 2018-05-22 | 2018-10-19 | 湖南华菱湘潭钢铁有限公司 | A kind of Large Heat Input Welding low-carbon bainite steel plate and its manufacturing method |
-
2018
- 2018-12-27 CN CN201811606352.6A patent/CN109518096A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01129836A (en) * | 1987-11-13 | 1989-05-23 | Canon Inc | Ultrasonic eye axial length meter |
| JPH08209296A (en) * | 1995-02-01 | 1996-08-13 | Nippon Steel Corp | High tensile strength steel plate for welding structural use excellent in fatigue strength of welded joint |
| JP2004027334A (en) * | 2002-06-28 | 2004-01-29 | Jfe Steel Kk | Steel for induction tempering and method of producing the same |
| CN104321456A (en) * | 2013-02-08 | 2015-01-28 | 新日铁住金不锈钢株式会社 | Stainless steel brake disc and method for manufacturing same |
| CN107406942A (en) * | 2015-03-24 | 2017-11-28 | 杰富意钢铁株式会社 | Tufftride steel and part and its manufacture method |
| CN108677088A (en) * | 2018-05-22 | 2018-10-19 | 湖南华菱湘潭钢铁有限公司 | A kind of Large Heat Input Welding low-carbon bainite steel plate and its manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| 张青柱: ""氮微合金化高锰钢组织和耐磨性能研究"", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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Application publication date: 20190326 |