CN101597720A - A kind of high temperature resistance and high strength alloy steel and thermal treatment process thereof - Google Patents
A kind of high temperature resistance and high strength alloy steel and thermal treatment process thereof Download PDFInfo
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- CN101597720A CN101597720A CNA2009100628931A CN200910062893A CN101597720A CN 101597720 A CN101597720 A CN 101597720A CN A2009100628931 A CNA2009100628931 A CN A2009100628931A CN 200910062893 A CN200910062893 A CN 200910062893A CN 101597720 A CN101597720 A CN 101597720A
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Abstract
The present invention relates to a kind of high temperature resistance and high strength alloy steel and thermal treatment process thereof.The composition of described high temperature resistance and high strength alloy steel and quality % are: carbon 0.06～0.1, nickel 0.8-1.2, vanadium 0.9-1.8, molybdenum 1.6-2.6, silicon 0.8-1.2, manganese 1.5-2.8, chromium 2.3-6.0, tungsten 0.1-0.3, re-si-mg alloy 0.7～1.5, all the other are iron; The thermal treatment process of this kind high temperature resistance and high strength alloy steel comprises three phases, and the fs is to be heated to 950 ℃, and carries out quench treatment after the insulation; Subordinate phase is to carry out 800 ℃ temper, and cools off after the insulation; Phase III is a reheat to 600 ℃, and insulation back naturally cooling.This steel high temperature resistant performance is good, intensity is high, and has plasticity and toughness preferably.
Description
Technical field
The present invention relates to a kind of high temperature resistance and high strength alloy steel and thermal treatment process thereof.
Background technology
The part that uses under the hot environment must have high thermal resistance and high strength, therefore the used steel of part is also required high temperature resistant and high strength.
The Chinese patent notification number is CN100412221C, and the day for announcing is that the patent of invention on August 20th, 2008 discloses a kind of high-temperature alloy steel, and the composition of this steel and weight percent are: carbon: 0.7-1.5, nickel 0-1.5, vanadium 0-1.5, molybdenum 1.0-3, silicon 0.5-1.5, manganese 0.2-1.0 ， Chrome 0-3, tungsten 0-3, magnesium 0-0.8, titanium 0-1.5, aluminium 0-0.5, all the other are iron.This kind steel has certain intensity under hot environment, but because carbon content is higher, toughness is not strong, and manganese content caused the hardening capacity of material not high less, so these steel are under some environment, as is used for making the fishbolt on the vacuum oven, then intensity, high thermal resistance and toughness all can not meet the needs of production, produced part is easily broken and is out of shape, and changes the frequency height, very waste.
Summary of the invention
First purpose of the present invention provides a kind of high temperature resistance and high strength alloy steel, and this steel high temperature resistant performance is good, intensity is high, and the part made from this steel is difficult for breaking and being out of shape under hot environment, and it is lower to change frequency.
Second purpose of the present invention provides a kind of thermal treatment process of making above-mentioned high temperature resistance and high strength alloy steel.
For realizing first purpose of the present invention, the technical scheme that the present invention takes is: a kind of high temperature resistance and high strength alloy steel, and the composition of described high temperature resistance and high strength alloy steel and quality % are: carbon 0.06～0.1, nickel 0.8～1.2, vanadium 0.9～1.8, molybdenum 1.6～2.6, silicon 0.8～1.2, manganese 1.5～2.8 Chrome 2.3～6.0, tungsten 0.1～0.3, re-si-mg alloy 0.7～1.5, all the other are iron.
Further, the composition of this high temperature resistance and high strength alloy steel and quality % are: carbon 0.08, and nickel 1.0, vanadium 1.4, molybdenum 2.2, silicon 1.0, manganese 2.1 ， Chrome 4.8, tungsten 0.2, re-si-mg alloy 1.1, all the other are iron.
Described re-si-mg alloy should meet standard GB/T4138-93.
For realizing second purpose of the present invention, the technical scheme that the present invention takes is: a kind of thermal treatment process of above-mentioned high temperature resistance and high strength alloy steel, described thermal treatment process comprise following three successive stage:
Fs is to be heated to 950 ℃, and carries out quench treatment after being incubated 4 hours in oils liquid;
Subordinate phase is to carry out 800 ℃ temper, and cools off with cold water after being incubated 6 hours, and be 10 minutes cooling time;
Phase III is a reheat to 600 ℃, and naturally cooling after being incubated 3 hours.
The oils liquid that the described fs is used when carrying out quench treatment is spindle oil.
Compared with prior art, beneficial effect of the present invention is:
1. a kind of high temperature resistance and high strength alloy steel of the present invention has plasticity and toughness preferably, and because manganese content height, this steel is easier to through hardening again, thus this steel not only intensity height, resistance to elevated temperatures are good, and also have plasticity and toughness preferably.
2. the first step described in a kind of high temperature resistance and high strength alloy steel heat treating method of the present invention and second goes on foot the adjustable whole timber material of heat treatment step uniform ingredients, refinement material structure, can separate out the intensity that hard compounds increases material;
3. the step of the 3rd described in a kind of high temperature resistance and high strength alloy steel heat treating method of the present invention heat treatment step can make the tissue of material stable, can separate out intensity, the obdurability that can improve material and high-temperature behavior that hard compounds increases material.
4. high temperature resistant, the high strength of part of using a kind of high temperature resistance and high strength alloy steel of the present invention to make has plasticity and toughness preferably, so long service life, and it is low to change frequency.
Embodiment
Describe the present invention below in conjunction with embodiment:
A kind of high temperature resistance and high strength alloy steel of the present invention, its composition and quality % are: carbon 0.06～0.1, nickel 0.8～1.2, vanadium 0.9～1.8, molybdenum 1.6～2.6, silicon 0.8～1.2, manganese 1.5～2.8 ， Chrome 2.3～6.0, tungsten 0.1～0.3, re-si-mg alloy 0.7～1.5, all the other are iron.
The chemical ingredients of above-mentioned a kind of high temperature resistance and high strength alloy steel and act on as follows:
Carbon: low-carbon (LC) can make the thermal characteristics of material, toughness be improved, when the quality % of carbon less than 0.06 the time, the intensity of steel is lower, when the quality % of carbon greater than 0.1 the time, the fragility of steel increases, toughness reduces.
Nickel: nickel is improved material hardening capacity, toughness and thermal characteristics, can form hard compounds to gain in strength in material.When the quality % of nickel less than 0.8 the time, hardness, toughness and intensity increase not obvious, the quality % of nickel was greater than 0.1 o'clock, hardness and intensity improve, but hardening capacity and toughness reduces, fragility increases.
Vanadium: but the refinement material structure in material, form hard compounds and gain in strength, when the quality % of vanadium less than 0.8 the time, the thinning effect of steel tissue is poor, the quality % of vanadium is greater than 1.2 o'clock, hardening capacity and toughness reduction.
Molybdenum: molybdenum can make material hardening capacity, thermal characteristics be improved, and the quality % of molybdenum was less than 1.6 o'clock, and the high-temperature behavior of steel tissue is undesirable, and the quality % of molybdenum was greater than 2.6 o'clock, and fragility increases.
Silicon: silicon can make material hardening capacity be improved.The quality % of silicon was less than 0.8 o'clock, and the intensity of steel tissue, hardness, elasticity and thermal characteristics improve not obvious, and the quality % of silicon was greater than 1.6 o'clock, and the hardening capacity of steel is undesirable.
Manganese: manganese can make material hardening capacity and wear resisting property be improved, and the quality % of manganese was less than 1.5 o'clock, and the shock resistance of steel tissue, wear resistance improve not obvious, hardening capacity is undesirable, and the quality % of manganese was greater than 2.8 o'clock, and steel are prone to the work hardening phenomenon, difficulty of processing increases, and plasticity reduces.
Chrome: chromium has fabulous oxidation-resistance and solidity to corrosion, and material hardening capacity, thermal characteristics are improved, and can form hard compounds in material and gain in strength, and in order to adapt to different environments for use, often adds other elements such as molybdenum, vanadium, tungsten etc.The hardenability of Chrome molybdenum alloy steel is good, can carry out deep-hardening, and is few to the temper brittleness tendency, high temperature process is good, and the processing back is attractive in appearance, and the quality % of the good Chrome of weldability was less than 2.3 o'clock, the quality % of the undesirable ， Chrome of the hardening capacity of steel tissue and thermal characteristics was greater than 6.0 o'clock, and the temper brittleness of steel tendency increases, ballistic absorptive character reduce, be prone to the work hardening phenomenon, difficulty of processing increases, and plasticity reduces.
Tungsten: tungsten can make the material thermal characteristics be improved, may form hard compounds in material gains in strength, has high temperature resistant, nonabradable characteristic, the quality % of tungsten was less than 0.1 o'clock, the thermal characteristics and the hardness of steel tissue are undesirable, and the quality % of tungsten was greater than 0.3 o'clock, and the fragility of steel increases, shock resistance reduces, and toughness and plasticity reduce.
Re-si-mg alloy: the harmful element in can pure material, thinning microstructure, have purify hot metal and in and the effect of harmful interference element, effect such as its can play nodularization, desulfurization after adding molten iron, degas can be controlled the content and the shape of sulphur inclusion in the steel; And can improve the molten steel clarity, and can also work with low melting point impurity such as arsenic, zinc, lead and generate the low compound that is insoluble to iron of fusing point, eliminate these impurity and can play the effect that prevents the nodularization of interference element destruction.The quality % of re-si-mg alloy easily produced sulphur and combines the inclusion that forms with manganese less than 0.7 o'clock in the steel tissue, influence the quality of steel, and the quality % of re-si-mg alloy was greater than 1.5 o'clock, and the hardening capacity of steel reduces.Described re-si-mg alloy should meet standard GB/T4138-93.
The present invention and then proposed a kind of thermal treatment process of high temperature resistance and high strength alloy steel, it takes three phases:
Fs is to be heated to 950 ℃, and carries out quench treatment after being incubated 4 hours in oils liquid;
Subordinate phase is to carry out 800 ℃ temper, and cools off after being incubated 6 hours, these two stage adjustable whole timber material uniform ingredients, refinement material structure, can separate out the intensity that hard compounds increases material.
Three phases is a reheat to 600 ℃, and is incubated 3 hours relief bolt naturally cooling, this stage can make the tissue of material stable, can separate out intensity, the obdurability that can improve material and high-temperature behavior that hard compounds increases material.
The oils liquid that the described fs is used when carrying out quench treatment is spindle oil.
Embodiment 1:
The composition of a kind of high temperature resistance and high strength alloy steel of the present invention and quality % are: carbon 0.1, and nickel 1.1, vanadium 1.7, molybdenum 2.5, silicon 1.1, manganese 2.6 ， Chrome 5.0, tungsten 0.3 meets the re-si-mg alloy 1.5 of standard GB/T4138-93, and all the other are iron.
The thermal treatment process that above-mentioned a kind of high temperature resistance and high strength alloy steel is taked is following three phases:
Fs is to be heated to 950 ℃ earlier, and carries out quench treatment after being incubated 4 hours in spindle oil;
Subordinate phase is to carry out 800 ℃ temper, and cools off with cold water after being incubated 6 hours, and be 10 minutes cooling time;
Phase III is a reheat to 600 ℃, and naturally cooling again after being incubated 3 hours.
Embodiment 2:
The composition of a kind of high temperature resistance and high strength alloy steel of the present invention and quality % are: carbon 0.06, and nickel 0.8, vanadium 0.9, molybdenum 1.6, silicon 0.8, manganese 1.6 ， Chrome 2.2, tungsten 0.1 meets standard GB/T4138-93 re-si-mg alloy 0.7, and all the other are iron.
The thermal treatment process that above-mentioned a kind of high temperature resistance and high strength alloy steel is taked is following three phases:
Fs is to be heated to 950 ℃ earlier, and carries out quench treatment after being incubated 4 hours in spindle oil;
Subordinate phase is to carry out 800 ℃ temper, and cools off with cold water after being incubated 6 hours, and be 10 minutes cooling time;
Phase III is a reheat to 600 ℃, and naturally cooling again after being incubated 3 hours.
Embodiment 3:
The composition of a kind of high temperature resistance and high strength alloy steel of the present invention and quality % are: carbon 0.08, and nickel 1.0, vanadium 1.4, molybdenum 2.2, silicon 1.0, manganese 2.1 ， Chrome 4.8, tungsten 0.2 meets standard GB/T4138-93 re-si-mg alloy 1.1, and all the other are iron.
The thermal treatment process that above-mentioned a kind of high temperature resistance and high strength alloy steel is taked is following three phases:
Fs is to be heated to 950 ℃ earlier, and carries out quench treatment after being incubated 4 hours in spindle oil;
Subordinate phase is to carry out 800 ℃ temper, and cools off with cold water after being incubated 6 hours, and be 10 minutes cooling time;
Phase III is a reheat to 600 ℃, and naturally cooling again after being incubated 3 hours.
Adopt the high temperature resistance and high strength alloy steel of the foregoing description to make the vacuum oven fishbolt, this fishbolt uses its tensile strength: σ under 600 ℃ of-900 ℃ of hot environments
bMore than or equal to 670-750MPa; Yield strength: σ
sMore than or equal to 540-670MPa (σ
s 300More than or equal to 450MPa); Unit elongation: δ is greater than 8%, and access times can reach 100 stoves, than improving more than 8 times the work-ing life of existing plain bolt.
Claims (4)
1. high temperature resistance and high strength alloy steel, the composition and the quality % that it is characterized in that this high temperature resistance and high strength alloy steel are: carbon 0.06～0.1, nickel 0.8～1.2, vanadium 0.9～1.8, molybdenum 1.6～2.6, silicon 0.8～1.2, manganese 1.5～2.8 ， Chrome 2.3～6.0, tungsten 0.1～0.3, re-si-mg alloy 0.7～1.5, all the other are iron.
2. a high temperature resistance and high strength alloy steel according to claim 1 is characterized in that the composition of this high temperature resistance and high strength alloy steel and quality % are: carbon 0.08, nickel 1.0, vanadium 1.4, molybdenum 2.2, silicon 1.0, manganese 2.1 ， Chrome 4.8, tungsten 0.2, re-si-mg alloy 1.1, all the other are iron.
3. the thermal treatment process of the described a kind of high temperature resistance and high strength alloy steel of claim 1 is characterized in that described thermal treatment process comprises following three successive stage:
Fs is to be heated to 950 ℃, and carries out quench treatment after being incubated 4 hours in oils liquid;
Subordinate phase is to carry out 800 ℃ temper, and cools off with cold water after being incubated 6 hours, and be 10 minutes cooling time;
Phase III is a reheat to 600 ℃, and naturally cooling again after being incubated 3 hours.
4. thermal treatment process according to claim 3 is characterized in that: the oils liquid that the described fs is used when carrying out quench treatment is spindle oil.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433513A (en) * | 2011-11-29 | 2012-05-02 | 杨学焦 | Preparation and heat treatment method of low-alloy heat-resistant high-strength steel memebers |
| CN102505098A (en) * | 2011-11-29 | 2012-06-20 | 杨学焦 | Low-alloy heat-resistant high-strength steel and member thereof |
| CN102560280A (en) * | 2011-12-30 | 2012-07-11 | 周子钦 | High-temperature-resistance and high-strength alloy steel and heat treatment process thereof |
| CN103866201A (en) * | 2012-12-13 | 2014-06-18 | 江苏华东炉业有限公司 | Alloy steel used for high-temperature electric resistance furnace |
| CN105506496A (en) * | 2014-09-24 | 2016-04-20 | 上海宝钢工业技术服务有限公司 | High-strength prestressing force bolt production method |
| CN106222680A (en) * | 2016-08-17 | 2016-12-14 | 安徽江淮车轮有限公司 | A kind of steel ring wheel surface processes technique |
| CN106283093A (en) * | 2016-08-17 | 2017-01-04 | 安徽江淮车轮有限公司 | A kind of fork truck steel ring process of surface treatment |
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2009
- 2009-06-29 CN CNA2009100628931A patent/CN101597720A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102433513A (en) * | 2011-11-29 | 2012-05-02 | 杨学焦 | Preparation and heat treatment method of low-alloy heat-resistant high-strength steel memebers |
| CN102505098A (en) * | 2011-11-29 | 2012-06-20 | 杨学焦 | Low-alloy heat-resistant high-strength steel and member thereof |
| CN102505098B (en) * | 2011-11-29 | 2013-06-26 | 宁波市博祥新材料科技有限公司 | Low-alloy heat-resistant high-strength steel and member thereof |
| CN102560280A (en) * | 2011-12-30 | 2012-07-11 | 周子钦 | High-temperature-resistance and high-strength alloy steel and heat treatment process thereof |
| CN103866201A (en) * | 2012-12-13 | 2014-06-18 | 江苏华东炉业有限公司 | Alloy steel used for high-temperature electric resistance furnace |
| CN103866201B (en) * | 2012-12-13 | 2016-05-18 | 江苏华东炉业有限公司 | For the steel alloy of high temperature resistance furnace |
| CN105506496A (en) * | 2014-09-24 | 2016-04-20 | 上海宝钢工业技术服务有限公司 | High-strength prestressing force bolt production method |
| CN106222680A (en) * | 2016-08-17 | 2016-12-14 | 安徽江淮车轮有限公司 | A kind of steel ring wheel surface processes technique |
| CN106283093A (en) * | 2016-08-17 | 2017-01-04 | 安徽江淮车轮有限公司 | A kind of fork truck steel ring process of surface treatment |
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Application publication date: 20091209 |