CN108048752A - A kind of preparation method of smelting of special stainless acidproof cast steel - Google Patents
A kind of preparation method of smelting of special stainless acidproof cast steel Download PDFInfo
- Publication number
- CN108048752A CN108048752A CN201711380099.2A CN201711380099A CN108048752A CN 108048752 A CN108048752 A CN 108048752A CN 201711380099 A CN201711380099 A CN 201711380099A CN 108048752 A CN108048752 A CN 108048752A
- Authority
- CN
- China
- Prior art keywords
- smelting
- preparation
- cast steel
- acidproof
- special stainless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- 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
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a kind of preparation method of smelting of special stainless acidproof cast steel, calculate in percentage by weight, and the element proportioning of this method selection material dispensing is as follows：C, 0.15~0.20%；Cr, 15.80~18.00%；Ni, 2.50~3.00%；Si ,≤1.0%；Mn ,≤1.0%；S, no more than 0.030%；P, no more than 0.025%.According to the casting that the method for the invention configuration smelting and pouring goes out, after cooperation quenching+high tempering heat treatment, observed in displaing micro picture, metallographic structure is sorbite and a small amount of delta ferrite, and metallographic structure is preferable, so that mechanical performance reaches：σb：1020MPa, σ0.2：890MPa, δ：The 13% relatively figure of merit, and with preferable anti-corrosion, acid resistance.
Description
Technical field
It is specifically a kind of that there is excellent machinability, acidproof and energy the present invention relates to the method for smelting of ferrous metal
The preparation method of smelting of the cast steel to work under moist medium.
Background technology
Aeronautical product is needed while having good mechanical properties, had because of the environment of its work, a large amount of structure class parts
Good inoxidizability and corrosion resistance.As the research and development of the machines such as carrier-borne aircraft are, it is necessary to use energy acidproof and be situated between in humid air
The material used in matter produces structure member, to meet the needs of product development.
The content of the invention
The object of the present invention is to provide a kind of preparation method of smelting of special stainless acidproof cast steel, to solve to need using energy
The acidproof and material that is used in humid air medium is come the technical issues of producing structure member.
Technical scheme is as follows：
The preparation method of smelting of this special stainless acidproof cast steel of the present invention, is to calculate in percentage by weight, the party
The element proportioning of method selection material dispensing is as follows：C, 0.15~0.20%；Cr, 15.80~18.00%；Ni, 2.50~
3.00%；Si ,≤1.0%；Mn ,≤1.0%；S, no more than 0.030%；P, no more than 0.025%.
Specifically, this method comprises the following steps：
S1. the element favourable to material property is selected to arrange in pairs or groups, works out element proportioning as described above；
S2. selecting includes carbon steel, crome metal, nickel plate, ferromanganese, ferrosilicon etc. carries out dispensing as raw material；All raw material
It is preheated；
S3. the furnace charge of preheating is added in into intermediate frequency furnace by following order：Crome metal --- nickel plate --- carbon steel ---
Ferromanganese, ferrosilicon are melted；
S4. the aluminium alloy after melting spreads deslagging agent covering when reaching 1540 DEG C -1570 DEG C；
S5. remove the gred after carrying out pre-deoxidation when temperature is at 1580 DEG C -1600 DEG C, and spread slag agent covering again；
S6. final deoxidizing is carried out when temperature reaches 1600 DEG C -1620 DEG C；
S7. aluminium alloy is after deoxidation, slagging-off, cast of coming out of the stove after adjustment solution temperature to pouring temperature；
S8. product and related coupon carry out quenching+high tempering.
The material of the present invention belongs to martensite type stainless acid resistant steel, has very high intensity and hardness, to aoxidizing acids, with
And the aqueous solution of organic salt has good corrosion resistance.It is typically martensite+ferrite after the material is quenched, due to ingredient
And the difference of heating temperature, the ferrite content in tissue can contain in the range of a few percent to tens percent, ferrite
The difference of amount can cause the performance of material very big influence, at the same material have by heat treatment process to the transformation of tissue it is larger
It influences.The process of the present invention is based on the fluctuation for solving chemical composition in preparation melting, so that material obtains stable power
Learn performance；Heat treatment process parameter is optimized and controlled simultaneously, to obtain best tissue morphology, so that material obtains
Best performance indicator.
The present invention has the advantages that：
By the method for the invention preparation melt out come stainless acidproof cast steel, mechanical property can reach：σb：
1020MPa, σ0.2：890MPa, δ：13%.The material mating suitably surface treatment can pass through 96h salt spray tests.Suitable for warship
Carrier aircraft product.
Specific embodiment
With reference to embodiment, the invention will be further described, but not as any limitation of the invention.
Embodiment 1：
Implement in accordance with the following steps：
1. carry out dispensing by table 1.
1 % of table
| C | Cr | Ni | Si | Mn |
| 0.17 | 17 | 2.7 | 0.8 | 0.8 |
2. there are the dirts such as greasy dirt, corrosion, silt on furnace charge surface must use the removings such as blast or wire brush.And make after preheating
With.Crome metal is preheated with stove, remaining furnace charge preheats by stove.
3. the intermediate frequency furnace that melting uses must be basic lining.
4. charging：Crome metal, nickel are first added in, is reloaded into carbon steel and foundry returns.During charging, it is attached that big block should be mounted in furnace wall
Closely, cobbing is mounted in intermediate and furnace bottom.
It 5. material should be smash in fusion process at any time, prevents furnace charge from putting up a bridge and hanging, and adds in remaining furnace charge successively.Furnace charge starts
After fusing, timely deslagging agent covers entire liquid level.
6. when melt temperature reaches 1540 DEG C -1570 DEG C, ferromanganese and Antaciron are added in, and spreads slag remover covering.
7. when melt temperature reaches 1580 DEG C -1600 DEG C, the ferromanganese for accounting for furnace charge weight 0.12%-0.16% is sequentially added,
The ferrosilicon pre-deoxidation of 0.06%-0.10%.It removes the gred after the completion of pre-deoxidation, and spreads lock agent covering again.
8. after the completion of pre-deoxidation, melt power-off under deslagging agent covering stands 3min-5min.
9. after the completion of standing, removing the slag on metal bath surface, and spread deslagging agent and repeat slagging-off until slag is cleared.
10. when melt temperature reaches 1600 DEG C -1620 DEG C, the aluminium final deoxidizing for accounting for furnace charge weight 0.06%-0.10% is added in.
11. powering off adjustment melt temperature after the completion of final deoxidizing, removal slag in 2min is sent after molten steel reaches pouring temperature
Electricity is come out of the stove cast.
12. with 50 and 6 machine coupons of this melt pouring cast part.1590 DEG C -1610 DEG C of pouring temperature.
13. pair housing and coupon carry out proposing high performance quenching+high tempering heat treatment, quenching：650 ± 10 DEG C of preheatings；
930 DEG C are warming up to, is kept the temperature, oil quenching；High tempering：730 DEG C, heat preservation, with being furnace-cooled to 580 ± 10 DEG C of oil cooling or water coolings of coming out of the stove.
According to the casting that the method for the invention configuration smelting and pouring goes out, after cooperation quenching+high tempering heat treatment, aobvious
It is observed in micro- picture, metallographic structure is sorbite and a small amount of delta ferrite, and metallographic structure is preferable, so that mechanical performance reaches：
σb：1020MPa, σ0.2：890MPa, δ：The 13% relatively figure of merit, and with preferable anti-corrosion, acid resistance.
The concrete application example of the above simply present invention, the present invention also has other embodiments, all to use equivalent substitution
Or the technical solution that equivalent transformation is formed, it all falls within protection domain of the presently claimed invention.
Claims (2)
1. a kind of preparation method of smelting of special stainless acidproof cast steel, it is characterised in that：It calculates in percentage by weight, this method
The element proportioning for selecting material dispensing is as follows：C, 0.15~0.20%；Cr, 15.80~18.00%；Ni, 2.50~3.00%；
Si ,≤1.0%；Mn ,≤1.0%；S, no more than 0.030%；P, no more than 0.025%.
2. the preparation method of smelting of special stainless acidproof cast steel according to claim 1, it is characterised in that：This method includes
Following steps：
S1. the element favourable to material property is selected to arrange in pairs or groups, works out element proportioning；
S2. selecting includes carbon steel, crome metal, nickel plate, ferromanganese, ferrosilicon carries out dispensing as raw material；All raw material carries out pre-
Heat；
S3. the furnace charge of preheating is added in into intermediate frequency furnace by following order：Crome metal --- nickel plate --- carbon steel --- ferromanganese,
Ferrosilicon is melted；
S4. the aluminium alloy after melting spreads deslagging agent covering when reaching 1540 DEG C -1570 DEG C；
S5. remove the gred after carrying out pre-deoxidation when temperature is at 1580 DEG C -1600 DEG C, and spread slag agent covering again；
S6. final deoxidizing is carried out when temperature reaches 1600 DEG C -1620 DEG C；
S7. aluminium alloy is after deoxidation, slagging-off, cast of coming out of the stove after adjustment solution temperature to pouring temperature；
S8. product and related coupon carry out quenching+high tempering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380099.2A CN108048752A (en) | 2017-12-20 | 2017-12-20 | A kind of preparation method of smelting of special stainless acidproof cast steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711380099.2A CN108048752A (en) | 2017-12-20 | 2017-12-20 | A kind of preparation method of smelting of special stainless acidproof cast steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108048752A true CN108048752A (en) | 2018-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711380099.2A Pending CN108048752A (en) | 2017-12-20 | 2017-12-20 | A kind of preparation method of smelting of special stainless acidproof cast steel |
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| CN (1) | CN108048752A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109234640A (en) * | 2018-11-16 | 2019-01-18 | 泉州市恒通机械配件有限公司 | A kind of cast steel and its production technology |
| CN110578101A (en) * | 2019-10-14 | 2019-12-17 | 王平 | Marine tempered sorbite high-strength and high-toughness stainless structural steel and preparation method thereof |
| CN111270129A (en) * | 2018-12-05 | 2020-06-12 | 兴化市聚鑫不锈钢有限公司 | Novel alloy wear-resistant material for mine hydraulic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0087482A1 (en) * | 1982-02-26 | 1983-09-07 | Kubota Ltd. | Heat-resisting alloy for rolls |
| CN101775553A (en) * | 2009-01-08 | 2010-07-14 | 中铁山桥集团有限公司 | Antirust weldable alloy cast steel material and application thereof |
| CN102628143A (en) * | 2012-04-06 | 2012-08-08 | 常熟市建华模具有限责任公司 | 2cr17ni3 stainless steel glass mould material |
| CN107747063A (en) * | 2017-11-29 | 2018-03-02 | 郑州永通特钢有限公司 | A kind of high tough martensitic stain less steel |
-
2017
- 2017-12-20 CN CN201711380099.2A patent/CN108048752A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0087482A1 (en) * | 1982-02-26 | 1983-09-07 | Kubota Ltd. | Heat-resisting alloy for rolls |
| CN101775553A (en) * | 2009-01-08 | 2010-07-14 | 中铁山桥集团有限公司 | Antirust weldable alloy cast steel material and application thereof |
| CN102628143A (en) * | 2012-04-06 | 2012-08-08 | 常熟市建华模具有限责任公司 | 2cr17ni3 stainless steel glass mould material |
| CN107747063A (en) * | 2017-11-29 | 2018-03-02 | 郑州永通特钢有限公司 | A kind of high tough martensitic stain less steel |
Non-Patent Citations (1)
| Title |
|---|
| 包彦堃等: "《熔模铸造技术》", 30 November 1997 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109234640A (en) * | 2018-11-16 | 2019-01-18 | 泉州市恒通机械配件有限公司 | A kind of cast steel and its production technology |
| CN111270129A (en) * | 2018-12-05 | 2020-06-12 | 兴化市聚鑫不锈钢有限公司 | Novel alloy wear-resistant material for mine hydraulic equipment |
| CN110578101A (en) * | 2019-10-14 | 2019-12-17 | 王平 | Marine tempered sorbite high-strength and high-toughness stainless structural steel and preparation method thereof |
| WO2021072793A1 (en) * | 2019-10-14 | 2021-04-22 | 王平 | Marine tempered sorbite high-strength-and-toughness stainless structural steel and preparation method therefor |
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Application publication date: 20180518 |