CN106399828A - High-strength alloy steel for door frame and preparing method thereof - Google Patents
High-strength alloy steel for door frame and preparing method thereof Download PDFInfo
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- CN106399828A CN106399828A CN201610884951.9A CN201610884951A CN106399828A CN 106399828 A CN106399828 A CN 106399828A CN 201610884951 A CN201610884951 A CN 201610884951A CN 106399828 A CN106399828 A CN 106399828A
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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
- 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
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Special Wing (AREA)
- Joining Of Corner Units Of Frames Or Wings (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Abstract
The invention discloses high-strength alloy steel for a door frame and a preparing method thereof. The method comprises: (1) performing water washing on alloy steel, then performing anaerobic calcinating, and then placing in an active agent for activation processing; (2) performing thermal processing for the first time and thermal processing for the second time on the activated alloy steel in sequence; (3) quenching, heating and cooling the thermally processed alloy steel, and then placing in a magnesium chloride solution to prepare the high-strength steel for a door frame, wherein the alloy steel contains respective elements in parts by weight: 0.65-0.85% of C, 0.15-0.35% of Si, 0.20-0.30% of Mn, 0.3-0.55% of Mo, 0.15-0.4% of Mg, 0.05-0.15% of Ge and the balance of Fe, the active agent is one of sodium dodecyl benzene sulfonate, fatty glyceride and sodium glycocholate, a quenching agent used in step (3) is PAG quenching agent, and in step (3), a heating temperature is 500-520 DEG C, and time is 100-120min. The high-strength alloy steel for a door frame prepared by the method has excellent mechanical properties such as large strength and large hardness.
Description
Technical field
The present invention relates to steel alloy is and in particular to doorframe high strength alloy steel and preparation method thereof.
Background technology
Doorframe is important ingredient in buildings exterior-protected structure system, to divide by its composition material, common doorframe
There are Woody door frame, glass door frame, aluminum alloy doorframe and alloy steel door frame etc..Woody door frame is inflammable, yielding, is difficult after being destroyed
Repair, easily ftracture, scab, corrosion resistance is poor, easy damaged by worms etc. affects, and make moist and easily go mouldy.Glass door frame exists
Frangible defect is thus limit its application.Aluminum alloy doorframe is yielding, and aluminium is carbon isotopes.Alloy steel door frame has by force
Degree is big, be easy to processing, with low cost, operation management expense is low, low-cost feature and be widely used in doorframe.
But, the phenomenon such as easily wear and tear, corrode in its surface in use for current commercial doorframe steel alloy, and,
The mechanical mechanics properties such as its intensity, hardness, toughness there is also defect, thus affecting its attractive in appearance and use.
Content of the invention
An object of the present invention is to provide mild condition, the preparation side of doorframe high strength alloy steel simple to operate
Method.
It is a further object of the present invention to provide there is the excellent mechanical mechanical property such as high intensity by what said method was prepared from
The doorframe high strength alloy steel of energy.
The preparation method of doorframe high strength alloy steel that the present invention provides is：(1) steel alloy is washed, then entered
Row anaerobic is calcined, and is subsequently placed in activating agent and carries out activation processing；(2) steel alloy after activated process is carried out first successively
Heating and the heat treatment of the second heating；(3) steel alloy after heat treatment is carried out quenching, heats, cools down, be then placed in chlorination
So that doorframe high strength alloy steel is obtained in magnesium solution；Wherein, in parts by weight, in steel alloy, each element content is：C：0.65-
0.85%, Si：0.15-0.35%, Mn：0.20-0.30%, Mo：0.3-0.55%, Mg：0.15-0.4%, Ge：0.05-
0.15%, balance of Fe；Activating agent is one of dodecylbenzene sodium sulfonate, fatty glyceride and sodium glycocholate or many
Kind；The quenching medium used in the step of quenching is PAG quenching medium；In step (3), the temperature of heating is 500-520 DEG C, heating
Time be 100-120min.
In above-mentioned preparation method, the temperature and time of anaerobic calcining can select in wide scope, but for improving
The cleannes of this steel alloy, and improve its mechanical mechanics property it is preferable that the temperature of anaerobic calcining is 230-250 DEG C, anaerobic is forged
The time burnt is 5-6h.
In above-mentioned preparation method, the concrete concentration of activating agent can select in wide scope, but for improving activation
The activation effect processing, simultaneously for ensureing that steel alloy is injury-free it is preferable that the concentration of activating agent is 30-40g/L.
In above-mentioned preparation method, the time of activation processing can select, in wide scope equally from activation effect
Consider it is preferable that the time of activation processing is 30-50s.
In above-mentioned preparation method, the concrete steps of the first heating and the second heating can select in wide scope, is
The mechanical mechanics property such as intensity of doorframe high strength alloy steel obtained by raising is it is preferable that the step of the first heating is：From
The 22-26 DEG C of heating rate with 20-25 DEG C/min is warming up to 580-620 DEG C, and is incubated 60-80min at 580-620 DEG C；The
Two heating steps be：It is warming up to 780-820 DEG C from the 580-620 DEG C of heating rate with 10-15 DEG C/min, and in 780-820
It is incubated 160-180min at DEG C.
In above-mentioned preparation method, the concrete concentration of PAG quenching medium can select in wide scope, obtained for improving
The mechanical mechanics property of doorframe high strength alloy steel is it is preferable that the volumetric concentration of PAG quenching medium is 6-10%.
In above-mentioned preparation method, the concrete steps of cooling can select in wide scope, is similarly raising obtained
The mechanical mechanics property of doorframe high strength alloy steel is it is preferable that cool down concretely comprises the following steps：First water-cooled to 120-150 DEG C, then
Naturally cool to 18-25 DEG C.
In above-mentioned preparation method, the concrete concentration of magnesium chloride solution can select in wide scope, made for improving
The quality obtaining doorframe high strength alloy steel is it is preferable that the volumetric concentration of magnesium chloride solution is 18-22g/L.
Present invention also offers doorframe high strength alloy steel, this doorframe high strength alloy steel is by above-mentioned method
It is prepared from.
By technique scheme, the present invention is by first carrying out washing by steel alloy, anaerobic calcining, is then placed in activating agent
In carry out activation processing, then above-mentioned steel alloy is carried out successively the first heating and second heating heat treatment, finally quenched
Fire, heating, cooling, are then placed in magnesium chloride solution and doorframe high strength alloy steel are obtained.In the process, washing can be right
Alloy steel surface is slightly washed, and anaerobic calcining can improve the mechanical performances such as the hardness of steel alloy, lifts its quality, and at activation
Reason then can carry out fine purifiation to remove the impurity such as oxide and the carbon on surface to alloy steel surface；First heating and second is heated
Heat treatment can significantly improve hardness, the intensity of this steel alloy；The operation being finally placed in magnesium chloride solution can be played blunt
The effect changed.The method is a kind of with low cost, environmental protection and method simple to operate, prepared doorframe high-strength alloy
Steel has the excellent mechanical mechanics property such as high intensity.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that it is described herein concrete
Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
Embodiment 1
(1) steel alloy is washed, at a temperature of 235 DEG C, then carry out the anaerobic calcining of 5h, be subsequently placed in concentration
For carrying out the activation processing of 35s in the dodecylbenzene sodium sulfonate of 30g/L；
(2) steel alloy after activated process is warming up to 585 DEG C from 22 DEG C of heating rates with 20 DEG C/min, and in
At 585 DEG C, insulation 60min is to carry out the heat treatment of the first heating；Then it is warming up to from 585 DEG C of heating rates with 10 DEG C/min
780 DEG C, and it is incubated 160min at 780 DEG C to carry out the heat treatment of the second heating；
(3) the PAG quenching medium being 6% with volumetric concentration by described steel alloy after heat treatment carries out quenching, then exists
Heat 100min, then first water-cooled is to 125 DEG C, then naturally cools to 18 DEG C, and being finally placed in volumetric concentration is at a temperature of 500 DEG C
So that doorframe high strength alloy steel A1 is obtained in the magnesium chloride solution of 18g/L；
Wherein, in parts by weight, in described steel alloy, each element content is：C：0.65%, Si：0.15%, Mn：
0.20%, Mo：0.3%, Mg：0.15%, Ge：0.05%, balance of Fe.
Embodiment 2
(1) steel alloy is washed, at a temperature of 245 DEG C, then carry out the anaerobic calcining of 6h, be subsequently placed in concentration
For carrying out the activation processing of 50s in the fatty glyceride of 40g/L；
(2) the described steel alloy after activated process is warming up to 620 DEG C from 25 DEG C of heating rates with 25 DEG C/min, and
At 620 DEG C, insulation 80min is to carry out the heat treatment of the first heating；Then heat up from 620 DEG C of heating rates with 15 DEG C/min
To 820 DEG C, and it is incubated 180min at 820 DEG C to carry out the heat treatment of the second heating；
(3) the PAG quenching medium being 10% with volumetric concentration by described steel alloy after heat treatment carries out quenching, then exists
Heat 120min, then first water-cooled is to 150 DEG C, then naturally cools to 25 DEG C, and being finally placed in volumetric concentration is at a temperature of 520 DEG C
So that doorframe high strength alloy steel A2 is obtained in the magnesium chloride solution of 22g/L；
Wherein, in parts by weight, in described steel alloy, each element content is：C：0.85%, Si：0.35%, Mn：
0.30%, Mo：0.55%, Mg：0.4%, Ge：0.15%, balance of Fe.
Embodiment 3
(1) steel alloy is washed, at a temperature of 240 DEG C, then carry out the anaerobic calcining of 5.5h, be subsequently placed in dense
Spend the activation processing for carrying out 40s in the sodium glycocholate of 35g/L；
(2) the described steel alloy after activated process is warming up to 600 DEG C from 24 DEG C of heating rates with 22 DEG C/min, and
At 600 DEG C, insulation 70min is to carry out the heat treatment of the first heating；Then heat up from 600 DEG C of heating rates with 13 DEG C/min
To 800 DEG C, and it is incubated 170min at 800 DEG C to carry out the heat treatment of the second heating；
(3) the PAG quenching medium being 8% with volumetric concentration by described steel alloy after heat treatment carries out quenching, then exists
Heat 110min, then first water-cooled is to 135 DEG C, then naturally cools to 22 DEG C, and being finally placed in volumetric concentration is at a temperature of 510 DEG C
So that doorframe high strength alloy steel A3 is obtained in the magnesium chloride solution of 20g/L；
Wherein, in parts by weight, in described steel alloy, each element content is：C：0.75%, Si：0.25%, Mn：
0.25%, Mo：0.4%, Mg：0.25%, Ge：0.1%, balance of Fe.
Comparative example 1
Method according to embodiment 1 carries out steel alloy B1 is obtained, except that, do not carry out anaerobic in step (1) and forge
Burn.
Comparative example 2
Method according to embodiment 1 carries out steel alloy B2 is obtained, except that, do not carry out at activation in step (1)
Reason.
Comparative example 3
Method according to embodiment 1 carries out steel alloy B3 is obtained, except that, step (2) does not carry out second and adds
The heat treatment of heat.
Comparative example 4
Method according to embodiment 1 carries out steel alloy B4 is obtained, except that, the quenching medium used in the step of quenching
For water.
Comparative example 5
Method according to embodiment 1 carries out steel alloy B5 is obtained, except that, the steel alloy in step (1) is low
Carbon steel.
Comparative example 6
Method according to embodiment 1 carries out steel alloy B6 is obtained, except that, in step (3), the temperature of heating is
250 DEG C, the time of heating is 40min.
Detection example 1
The steel alloy A1-A3 that above-described embodiment and comparative example are obtained, B1-B6 carry out the detection of mechanical mechanics property, tool
Body the results are shown in Table 1.
Table 1
| A1 | A2 | A3 | B1 | B2 | B3 | B4 | B5 | B6 | |
| Yield strength/MPa | 780 | 800 | 780 | 550 | 560 | 540 | 600 | 530 | 620 |
| Tensile strength/MPa | 820 | 780 | 800 | 600 | 520 | 540 | 620 | 520 | 620 |
| Brinell hardness/HB | 340 | 320 | 330 | 150 | 160 | 140 | 160 | 150 | 140 |
By above-mentioned detection example, the doorframe high strength alloy steel prepared by above-described embodiment has yield strength
Greatly, tensile strength is big and high rigidity；And do not carry out anaerobic calcining, the heat treatment not carrying out activation processing, not carrying out the second heating,
Quenching medium selects water, steel alloy to adopt, and the yield strength of the steel alloy obtained by comparative example such as mild steel is little, tensile strength is little, hard
Degree is low.This shows that the doorframe high strength alloy steel that the present invention provides is the result of the unified effect of each step phase, has high intensity
Etc. excellent mechanical mechanics property.Additionally, can be seen that the doorframe high intensity of present invention offer from the preparation process of the present invention
The preparation method mild condition of steel alloy, simple to operate.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, multiple simple variant can be carried out to technical scheme, this
A little simple variant belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy no longer separately illustrates.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it equally should be considered as content disclosed in this invention.
Claims (9)
1. a kind of preparation method of doorframe high strength alloy steel is it is characterised in that described preparation method includes：
(1) steel alloy is washed, then carried out anaerobic calcining, be subsequently placed in activating agent and carry out activation processing；
(2) the described steel alloy after activated process is carried out the first heating and the heat treatment of the second heating successively；
(3) described steel alloy after heat treatment is carried out quenching, heats, cools down, be then placed in magnesium chloride solution to be obtained
Doorframe high strength alloy steel；
Wherein, in parts by weight, in described steel alloy, each element content is：C：0.65-0.85%, Si：0.15-0.35%, Mn：
0.20-0.30%, Mo：0.3-0.55%, Mg：0.15-0.4%, Ge：0.05-0.15%, balance of Fe；Described activating agent is
One or more of dodecylbenzene sodium sulfonate, fatty glyceride and sodium glycocholate；Use in the step of described quenching
Quenching medium is PAG quenching medium；In step (3), the temperature of described heating is 500-520 DEG C, and the time of described heating is 100-
120min.
2. preparation method according to claim 1, wherein, the temperature of described anaerobic calcining is 230-250 DEG C, described anaerobic
The time of calcining is 5-6h.
3. preparation method according to claim 1 and 2, wherein, the concentration of described activating agent is 30-40g/L.
4. preparation method according to claim 3, wherein, the time of described activation processing is 30-50s.
5. the preparation method according to any one in claim 1-4, wherein, the step of described first heating is：From 22-
26 DEG C of heating rates with 20-25 DEG C/min are warming up to 580-620 DEG C, and are incubated 60-80min at 580-620 DEG C；Described
Two heating steps be：It is warming up to 780-820 DEG C from the 580-620 DEG C of heating rate with 10-15 DEG C/min, and in 780-820
It is incubated 160-180min at DEG C.
6. preparation method according to claim 5, wherein, the volumetric concentration of described PAG quenching medium is 6-10%.
7. preparation method according to claim 1, wherein, the concretely comprising the following steps of described cooling：First water-cooled is to 120-150
DEG C, then naturally cool to 18-25 DEG C.
8. preparation method according to claim 1, wherein, the volumetric concentration of described magnesium chloride solution is 18-22g/L.
9. a kind of doorframe high strength alloy steel is it is characterised in that described doorframe passes through claim 1-8 with high strength alloy steel
Method described in middle any one is prepared from.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884951.9A CN106399828A (en) | 2016-10-11 | 2016-10-11 | High-strength alloy steel for door frame and preparing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884951.9A CN106399828A (en) | 2016-10-11 | 2016-10-11 | High-strength alloy steel for door frame and preparing method thereof |
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| Publication Number | Publication Date |
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| CN106399828A true CN106399828A (en) | 2017-02-15 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102492897A (en) * | 2011-12-29 | 2012-06-13 | 钢铁研究总院 | Steel for lower plate of cargo oil tank of tanker |
| CN104011234A (en) * | 2011-12-27 | 2014-08-27 | 杰富意钢铁株式会社 | Hot-rolled steel sheet and process for manufacturing same |
-
2016
- 2016-10-11 CN CN201610884951.9A patent/CN106399828A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104011234A (en) * | 2011-12-27 | 2014-08-27 | 杰富意钢铁株式会社 | Hot-rolled steel sheet and process for manufacturing same |
| CN102492897A (en) * | 2011-12-29 | 2012-06-13 | 钢铁研究总院 | Steel for lower plate of cargo oil tank of tanker |
Non-Patent Citations (1)
| Title |
|---|
| 宋超英: "《机械制造实训教程（下册）》", 31 August 2015 * |
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Application publication date: 20170215 |