CN106435377A - Boiler water-cooling wall tube material and preparation method thereof - Google Patents
Boiler water-cooling wall tube material and preparation method thereof Download PDFInfo
- Publication number
- CN106435377A CN106435377A CN201610847204.8A CN201610847204A CN106435377A CN 106435377 A CN106435377 A CN 106435377A CN 201610847204 A CN201610847204 A CN 201610847204A CN 106435377 A CN106435377 A CN 106435377A
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- CN
- China
- Prior art keywords
- temperature
- controlled
- tube material
- preparation
- wall tube
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
-
- 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
-
- 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
Abstract
The invention belongs to the fields of boilers and mechanical material manufacturing, specifically relates to a boiler water-cooling wall tube material, and provides a preparation method. The material comprises the following components with contents in percentage by weight: 0.5-1.2% of carbon, 2-5% of manganese, 2-4% of nickel, 1-1.5% of chromium, not greater than 0.03% of sulphur, not greater than 0.03% of phosphorus and the balance iron. The boiler water-cooling wall tube material has the advantages of being high in strength, high-temperature-resistant, high in toughness, wear-resistant, easy to weld and the like, has economical efficiency to a certain extent, and can be widely used in the fields of boilers, electric power, nuclear power, transportation, national defense and the like.
Description
Technical field
The invention belongs to boiler and mechanical material manufacture field, provide one mainly for current boiler water wall tube material
Plant new preparation method.
Background technology
At present, because boiler manfacturing industry is very high for the design pressure of boiler water-cooled tube wall, operationally typically simultaneously
The metal average temperature of its vertical section water-cooled tube wall is up to 600 DEG C about, and because water-cooling wall pipe wall thickness can not surpass
Cross 9mm.Therefore when the mean temperature of metal pipe-wall is more than 575 DEG C, need high from many stress ratios T92, average wall thickness is little
In the water-cooled tube wall of the nickel-base alloy of 9mm, the long period safe operation of boiler could be ensured.
Content of the invention
Goal of the invention：The purpose of the present invention is exactly to overcome deficiency of the prior art, provides a kind of high intensity, resistance to height
Temperature, long service life, easily a kind of boiler water wall tube material of welding and preparation method thereof.
Technical scheme：In order to solve current boiler water-wall tube material deficiency problem, a kind of boiler water-wall tube of the present invention
Material and preparation method thereof, it includes the component of following weight percent content：
(1) carbon：0.5～1.2%, (2) manganese：2～5%, (3) nickel：2～4%, (4) chromium：1～1.5%, (5) sulfur≤
0.03%th, (6) phosphorus≤0.03%, (7) remaining content are ferrum.
Described a kind of boiler water wall tube material and preparation method thereof, preferably following weight percent content component：
(1) carbon：0.7～1.1%, (2) manganese：2.5～4.5%, (3) nickel：2～3%, (4) chromium：1.2～1.5%, (5) sulfur
≤ 0.025%, (6) phosphorus≤0.025%, (7) remaining content are ferrum.
Described a kind of boiler water wall tube material and preparation method thereof, further preferably following weight percent content group
Point：
(1) carbon：0.9%th, (2) manganese：3.5%th, (3) nickel：2.5%th, (4) chromium：1.35%th, (5) sulfur≤0.022%, (6) phosphorus
≤ 0.023%, (7) remaining content is ferrum.
A kind of boiler water wall tube material and preparation method thereof, it includes following manufacturing technology steps：
The first step is smelted：Above-mentioned each ratio component is smelted by electric smelter, tapping temperature is controlled simultaneously
Poured into a mould between 1700～1800 DEG C.
Second step moulding：Iron and steel solution is poured into mould, pouring temperature is controlled between 1500～1600 DEG C, insulation temperature
Degree controls between 1200～1300 DEG C, and temperature retention time controlled within 5～7 hours.
The water screen tube of cast is first carried out sand removal process, makees burnishing part after then taking flash removed again by the 3rd step cleaning
Reason.
4th step heat treatment：Water screen tube pipe after cleaning out is put in high temperature heat treatment furnace and is heated up, temperature
Degree rises between 1300～1400 DEG C, within being incubated 6～7 hours.
5th step quenching：Water-cooling wall pipe tapping temperature is controlled between 1100～1200 DEG C, under immersion normal temperature state
Diesel oil medium in disposably quenched within 20～30 minutes and come out of the stove, in quenching process, tube temperature is controlled 1000～
Between 1100 DEG C, after cooling down 3～6 hours, that is, obtain a kind of boiler high intensity, high-temp. resistant water-cooled wall tube material material finished product.
Beneficial effects of the present invention：
Compared with prior art, its distinguishing feature is the present invention：(1) carbon of lower content and new alloying element are adopted
Carry out proportioning, after being then passed through optimizing Technology for Heating Processing, high temperature strength and the toughness of water screen tube can be improved, simultaneously simultaneously
Due to the phosphorus content in chemical composition relatively low so as to water screen tube has good welding performance.(2) boiler feed water of the present invention
Precious metal alloys are not contained, therefore production cost is relatively low, has certain economy in cold wall pipe composition.(3) present invention carries
For a kind of boiler feed water cold wall pipe not only can be widely used for the fields such as boiler, electric power, nuclear power, traffic, national defence, and this water-cooled
Wall pipe also has the advantages that high temperature resistant, high intensity, high tenacity, wear-resisting easy welding, and every synthesis mechanics and process performance index are equal
Better than existing product standard.
Specific embodiment
The present invention is further illustrated by the following examples.
Embodiment 1：
A kind of boiler feed water cold wall tube material of the present invention and preparation method thereof, it includes following percentage by weight and contains
The component of amount：(1) carbon：0.7%th, (2) manganese：2.5%th, (3) nickel：2.5%th, (4) chromium：1.2%th, (5) sulfur≤0.025%, (6) phosphorus
≤ 0.025%, (7) remaining content is ferrum.
Described a kind of boiler water wall tube material and preparation method thereof, it includes following manufacturing technology steps：
The first step is smelted：Above-mentioned each ratio component is smelted by electric smelter, tapping temperature is controlled simultaneously
Poured into a mould for 1730 DEG C.
Second step moulding：Iron and steel solution is poured into mould, pouring temperature is controlled at 1520 DEG C, holding temperature controls
1250 DEG C, temperature retention time was controlled at 5.5 hours simultaneously.
The water screen tube of cast is first carried out sand removal process, makees burnishing part after then taking flash removed again by the 3rd step cleaning
Reason.
4th step heat treatment：Water screen tube pipe after cleaning out is put in high temperature heat treatment furnace and is heated up, temperature
Degree rises to 1350 DEG C, is incubated 6 hours.
5th step quenching：Water-cooling wall pipe tapping temperature is controlled at 1120 DEG C, and immerses the bavin under normal temperature state immediately
20 minutes in oil medium, carry out disposable Quenching Treatment, then tube temperature is controlled at 1030 DEG C, after cooling down 4 hours,
Obtain a kind of boiler high intensity, high-temp. resistant water-cooled wall tube material material finished product.
Embodiment 2：
A kind of boiler feed water cold wall tube material of the present invention and preparation method thereof, it includes following percentage by weight and contains
The component of amount：(1) carbon：0.9%th, (2) manganese：3.5%th, (3) nickel：2.5%th, (4) chromium：1.35%th, (5) sulfur≤0.028%, (6)
Phosphorus≤0.028%, (7) remaining content are ferrum.
Described a kind of a kind of boiler water wall tube material and preparation method thereof, it includes following manufacturing technology steps：
The first step is smelted：Above-mentioned each ratio component is smelted by electric smelter, tapping temperature is controlled simultaneously
Poured into a mould for 1750 DEG C.
Second step moulding：Iron and steel solution is poured into mould, pouring temperature is controlled at 1550 DEG C, holding temperature controls
1260 DEG C, temperature retention time was controlled at 6 hours simultaneously.
The water screen tube of cast is first carried out sand removal process, makees burnishing part after then taking flash removed again by the 3rd step cleaning
Reason.
4th step heat treatment：Water screen tube pipe after cleaning out is put in high temperature heat treatment furnace and is heated up, temperature
Degree rises to 1360 DEG C, is incubated 6.5 hours.
5th step quenching：Water-cooling wall pipe tapping temperature is controlled at 1150 DEG C, and immerses the bavin under normal temperature state immediately
25 minutes in oil medium, carry out disposable Quenching Treatment, then tube temperature is controlled at 1050 DEG C, by cooling down 4.5 hours
Afterwards, that is, a kind of boiler high intensity, high-temp. resistant water-cooled wall tube material material finished product are obtained.
Embodiment 3：
A kind of boiler feed water cold wall tube material of the present invention and preparation method thereof, it includes following percentage by weight and contains
The component of amount：(1) carbon：1.1%th, (2) manganese：4.5%th, (3) nickel：3%th, (4) chromium：1.45%th, (5) sulfur≤0.027%, (6) phosphorus
≤ 0.027%, (7) remaining content is ferrum.
Described a kind of a kind of boiler water wall tube material and preparation method thereof, it includes following manufacturing step：
The first step is smelted：Above-mentioned each ratio component is smelted by electric smelter, tapping temperature is controlled simultaneously
Poured into a mould for 1780 DEG C.
Second step moulding：Iron and steel solution is poured into mould, pouring temperature is controlled at 1560 DEG C, holding temperature controls
1280 DEG C, temperature retention time was controlled at 7 hours simultaneously.
The water screen tube of cast is first carried out sand removal process, makees burnishing part after then taking flash removed again by the 3rd step cleaning
Reason.
4th step heat treatment：Water screen tube pipe after cleaning out is put in high temperature heat treatment furnace and is heated up, temperature
Degree rises to 1380 DEG C, is incubated 7 hours.
5th step quenching：Water-cooling wall pipe tapping temperature is controlled at 1180 DEG C, and immerses the bavin under normal temperature state immediately
30 minutes in oil medium, carry out disposable Quenching Treatment, then tube temperature is controlled at 1070 DEG C, after cooling down 5 hours,
Obtain a kind of boiler high intensity, high-temp. resistant water-cooled wall tube material material finished product.
By above example, the present invention a kind of boiler water wall tube material and preparation method thereof, main performance data is examined
Survey as follows：
| Re(MPa) | Pm(MPa) | A (%) | AKV(J) | HBW |
| 1100～1600 | 1300～1800 | ≥9 | ≥28 | 330～450 |
The invention provides a kind of thinking and method, the method and the approach that implement this technical scheme are a lot, above institute
Stating is only the preferred embodiment of the present invention it is noted that for those skilled in the art, without departing from
On the premise of inventive formulation technological principle, some improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection domain of invention, in the present embodiment, all available prior art of clearly not each ingredient is realized.
Claims (4)
1. a kind of boiler water wall tube material and preparation method thereof it is characterised in that：It includes following weight percent content
Group is divided into, carbon：0.5～1.2%, manganese：2～5%, nickel：2～4%, chromium：1～1.5%, sulfur≤0.03%, phosphorus≤0.03%, its
Remaining content is ferrum.
2. a kind of boiler water wall tube material according to claim 1 it is characterised in that：Preferably following percentage by weight contains
Amount group is divided into, carbon：0.7～1.1%, manganese：2.5～4.5%, nickel：2～3%, chromium：1.2～1.5%, sulfur≤0.025%, phosphorus≤
0.025%th, remaining content is ferrum.
3. a kind of boiler water wall tube material according to claim 1 and preparation method thereof it is characterised in that：Excellent further
Following weight percent content group is selected to be divided into, carbon：0.9%th, manganese：3.5%th, nickel：2.5%th, chromium：1.35%th, sulfur≤0.022%,
Phosphorus≤0.023%, remaining content are ferrum.
4. a kind of boiler water wall tube material according to claim 1 and preparation method thereof it is characterised in that：It include with
Lower manufacturing technology steps：
The first step is smelted：Above-mentioned each ratio component is smelted by electric smelter, tapping temperature is controlled 1700～simultaneously
Poured into a mould between 1800 DEG C.
Second step moulding：Iron and steel solution is poured into mould, pouring temperature is controlled between 1500～1600 DEG C, holding temperature control
Between 1200～1300 DEG C, temperature retention time controlled within 5～7 hours system.
The water screen tube of cast is first carried out sand removal process, makees grinding process after then taking flash removed again by the 3rd step cleaning.
4th step heat treatment：Water screen tube pipe after cleaning out is put in high temperature heat treatment furnace and is heated up, temperature liter
To between 1300～1400 DEG C, within being incubated 6～7 hours.
5th step quenching：Water-cooling wall pipe tapping temperature is controlled between 1100～1200 DEG C, the bavin under immersion normal temperature state
Disposably quenched within 20～30 minutes in oil medium and come out of the stove, in quenching process, tube temperature is controlled 1000～1100
Between DEG C, after cooling down 3～6 hours, that is, obtain a kind of boiler high-strength high temperature-resistant water screen tube finished material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847204.8A CN106435377A (en) | 2016-09-23 | 2016-09-23 | Boiler water-cooling wall tube material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847204.8A CN106435377A (en) | 2016-09-23 | 2016-09-23 | Boiler water-cooling wall tube material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106435377A true CN106435377A (en) | 2017-02-22 |
Family
ID=58166286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610847204.8A Pending CN106435377A (en) | 2016-09-23 | 2016-09-23 | Boiler water-cooling wall tube material and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN106435377A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388834A (en) * | 2000-06-14 | 2003-01-01 | 川崎制铁株式会社 | High carbon steel pipe excellent in cold formability and high frequency hardenability and method for producing the same |
| CN102690993A (en) * | 2012-06-01 | 2012-09-26 | 内蒙古包钢钢联股份有限公司 | Water cooled wall seamless tube used for thermal power and production method thereof |
| CN104372256A (en) * | 2014-10-24 | 2015-02-25 | 无锡兆一锻压数控装备有限公司 | Special crane boom material for electric shovel and processing method of special crane boom |
-
2016
- 2016-09-23 CN CN201610847204.8A patent/CN106435377A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388834A (en) * | 2000-06-14 | 2003-01-01 | 川崎制铁株式会社 | High carbon steel pipe excellent in cold formability and high frequency hardenability and method for producing the same |
| CN102690993A (en) * | 2012-06-01 | 2012-09-26 | 内蒙古包钢钢联股份有限公司 | Water cooled wall seamless tube used for thermal power and production method thereof |
| CN104372256A (en) * | 2014-10-24 | 2015-02-25 | 无锡兆一锻压数控装备有限公司 | Special crane boom material for electric shovel and processing method of special crane boom |
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| PB01 | Publication | ||
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Application publication date: 20170222 |