CN108286027A - A kind of ferrochrome and its application - Google Patents
A kind of ferrochrome and its application Download PDFInfo
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- CN108286027A CN108286027A CN201810256618.2A CN201810256618A CN108286027A CN 108286027 A CN108286027 A CN 108286027A CN 201810256618 A CN201810256618 A CN 201810256618A CN 108286027 A CN108286027 A CN 108286027A
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- ferrochrome
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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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/06—Cast-iron alloys containing chromium
- C22C37/08—Cast-iron alloys containing chromium with 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
- C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of ferrochromes, including：Chromium, iron, manganese, molybdenum, copper, nickel, carbon, wherein each component quality accounting：Chromium accounts for 20%~30%, and iron accounts for 60%~70%, and manganese accounts for 1%~3%, and molybdenum accounts for %2~4%, and copper accounts for 1%~2%, and nickel accounts for 1%~3%, and carbon accounts for 2%~5%.
Description
Technical field
The invention belongs to technical field of alloy material more particularly to a kind of ferrochrome and its applications.
Background technology
The structure of phase is formed in alloy and property plays conclusive simultaneously to the performance of alloy, the change of alloy structure
Change relative populations, the grain size of each phase of phase in i.e. alloy, the variation of shape and distribution also occurs the performance of alloy very big
Influence.Therefore, using the combination of various elements to form a variety of different alloy phases, may meet using suitable processing
A variety of different performance requirements.
With chromium and iron ferroalloy as main component.It is one of the major alloy agent of steel and iron industry, in addition to principal component chromium
Also contain the impurity such as carbon, silicon, sulphur, phosphorus outside with iron.Ferrochrome contains chromium 55%~75%, is divided into high-carbon (4%~10% by phosphorus content
C), middle carbon (0.5%~4%C), low-carbon (>0.15%~0.5%C) and micro- carbon (≤0.15%C) ferrochrome.High carbon ferro-chrome is also known as
Carbon ferrochrome, in, low ＆ micro carbon ferrochromium be also known as Refining Chromium Iron.
The inoxidizability that can significantly improve steel is added in steel in chromium, increases the resistance to corrosion of steel.There is special object in many
All contain chromium in the steel of Physicochemical performance.Chromium in steel is added with ferrochrome.High carbon ferro-chrome be used as bearing quality steel (0.5%~
1.45%Cr), the alloying constituent of tool steel, mould steel (5%~12%Cr) and high-speed steel (3.8%~4.4%Cr), can be improved steel
Quenching degree, increase the abrasion resistance and hardness of steel.Chromium is added in cast iron and can be improved hardness, improve wearability, containing chromium 0.5%~
1.0% can improve its mechanical performance.High carbon ferro-chrome and furnace charge grade ferrochrome are largely used as smelting stainless steel (AOD or VOD methods)
Furnace charge reduces production cost.In, low-carbon ferrochromium for produce in, low carbon-structural steel, carburizing steel, manufacture gear, high pressure blower
Blade, valve plate etc..Chromic carbide iron is for producing stainless steel, acid resisting steel, heat resisting steel and electrothermal alloy etc..
The abrasion resistance and hardness of current ferrochrome also has room for improvement, just can apply to the wear-resistant grain mill of requirements at the higher level
It damages in workpiece.
Invention content
The present invention provides a kind of ferrochromes, including：Chromium, iron, manganese, molybdenum, copper, nickel, carbon, wherein each component quality accounts for
Than：Chromium accounts for 20%~30%, and iron accounts for 60%~70%, and manganese accounts for 1%~3%, and molybdenum accounts for %2~4%, and copper accounts for 1%~2%, and nickel accounts for
1%~3%, carbon accounts for 2%~5%.
Preferably, further including：The titanium of quality accounting 0.5%~2%.
Preferably, further including：The tungsten of quality accounting 0.1%~0.3%.
Preferably, further including：The vanadium of quality accounting 0.2%~0.3%.
Preferably, the quality accounting of chromium is 20%~25%.
Preferably, the quality accounting of iron is 65%~70%.
Purposes the present invention also provides above-mentioned ferrochrome as high load capacity wear-resistant material.
Ferrochrome hardness provided by the invention is high, and wearability is strong, can be applied in the anti-abrasive wear workpiece of high request.
Specific implementation mode
The present invention provides a kind of preparation methods of ferrochrome, including：
Step (1)：In parts by weight, by 50~80 parts of high carbon ferro-chromes, 10~20 parts of high carbon ferromanganeses, 10~20 parts of molybdenums
Iron, 10~15 parts of copper, 10~15 parts of nickel and 10~30 parts go out chromium agent and carry out melting processing and then secondary input 250~350
Part high carbon ferro-chrome carries out melting processing；
Step (2)：Aluminium powder deoxidation is added into the mixture of molten state；
Step (3)：Metal agglomerates processing, forms agglomerate；
Step (4)：Sintering slagging-off, obtains high-chromium alloy.
Preferably, in step (1), the temperature of melting is at 1600~1700 degrees Celsius, and the time was at 50~100 minutes.It is excellent
Selection of land, temperature are 1550~1650 degrees Celsius, and the time was at 85~100 minutes.
Preferably, in step (2), the temperature for processing of luming is 1200~1300 degrees Celsius, and the time is 30~50 minutes.
Preferably, temperature is 1250~1300 degrees Celsius, and the time is 30~35 minutes.
Preferably, in step (4), Isothermal sinter, temperature is 700~1100 degrees Celsius, and the time is 60~90 minutes.It is excellent
Selection of land, temperature are 700~750 degrees Celsius, and the time is 75~85 minutes.
Preferably, in step (4), first preheat 10 minutes at 300~500 degrees Celsius, then is burnt at 700~900 degrees Celsius
Knot 30 minutes, then be sintered 30 minutes at 1100~1400 degrees Celsius.
Preferably, in step (4), after being heated rapidly to 1300~1500 degrees Celsius, it is sintered 5~10 minutes, then rapidly
800~1100 degrees Celsius are cooled to, it is air-cooled after keeping the temperature 200 minutes.
Preferably, it is described go out chromium agent include potassium bichromate mixture.
Preferably, it is described go out chromium agent include potassium bichromate, dilute sulfuric acid, coke mixture.
Preferably, the mass ratio of the potassium bichromate, dilute sulfuric acid, coke is 5-8:2-3:2-4.
It is a kind of substance that chromium can be promoted to melt out to go out chromium agent, has certain fusing point, can rapidly melt out chromium, prevent gold
Belong to and excessive erosion and Hydrogen Brittleness Phenomena, the generation for inhibiting acid mist occurs.
By the above method, ferrochrome obtained, including：Chromium, iron, manganese, molybdenum, copper, nickel, carbon, wherein each component quality
Accounting：Chromium accounts for 20%~30%, and iron accounts for 60%~70%, and manganese accounts for 1%~3%, and molybdenum accounts for %2~4%, and copper accounts for 1%~2%, nickel
1%~3% is accounted for, carbon accounts for 2%~5%.
According to the difference of application scenarios, other elements such as tungsten, vanadium, titanium can also be added in right amount in melting raw material.For example,
The titanium of quality accounting 0.5%~2%, the tungsten of quality accounting 0.1%~0.3%, the vanadium of quality accounting 0.2%~0.3% is added.
Further, the quality accounting of chromium is 20%~25% in ferrochrome.
Further, the quality accounting of iron is 65%~70% in ferrochrome.
The above ferrochrome can be used as high load capacity wear-resistant material, be applied to field of machining.
Embodiment 1：
Step (1)：In parts by weight, by 80 parts of high carbon ferro-chromes, 20 parts of high carbon ferromanganeses, 20 parts of molybdenum-irons, 15 parts of copper, 15
Part nickel and 30 parts go out that chromium agent carries out melting processing and then secondary 350 parts of high carbon ferro-chromes of input carry out melting processing；Melting
Temperature is at 1700 degrees Celsius, and the time was at 100 minutes；Step (2)：Aluminium powder deoxidation is added into the mixture of molten state；Step
(3)：Metal agglomerates processing, forms agglomerate, and the temperature for processing of luming is 1300 degrees Celsius, and the time is 50 minutes；Step (4)：It burns
Knot slagging-off obtains high-chromium alloy, and sintering temperature is 1100 degrees Celsius, and the time is 60 minutes.
Embodiment 2：
Step (1)：In parts by weight, by 50 parts of high carbon ferro-chromes, 10 parts of high carbon ferromanganeses, 10 parts of molybdenum-irons, 10 parts of copper, 10
Part nickel and 10 parts go out that chromium agent carries out melting processing and then secondary 250 parts of high carbon ferro-chromes of input carry out melting processing；Melting
Temperature is at 1500 degrees Celsius, and the time was at 50 minutes；Step (2)：Aluminium powder deoxidation is added into the mixture of molten state；Step
(3)：Metal agglomerates processing, forms agglomerate, and the temperature for processing of luming is 1200 degrees Celsius, and the time is 30 minutes；Step (4)：It burns
Knot slagging-off, obtains high-chromium alloy, in sintering process, first preheat 10 minutes at 500 degrees Celsius, then 30 points of the sintering at 900 degrees Celsius
Clock, then be sintered 30 minutes at 1400 degrees Celsius.
Embodiment 3：
Step (1)：In parts by weight, by 60 parts of high carbon ferro-chromes, 15 parts of high carbon ferromanganeses, 15 parts of molybdenum-irons, 12 parts of copper, 12
Part nickel and 20 parts go out that chromium agent carries out melting processing and then secondary 300 parts of high carbon ferro-chromes of input carry out melting processing；Melting
Temperature is at 1600 degrees Celsius, and the time was at 90 minutes；Step (2)：Aluminium powder deoxidation is added into the mixture of molten state；Step
(3)：Metal agglomerates processing, forms agglomerate, and the temperature for processing of luming is 1250 degrees Celsius, and the time is 40 minutes；Step (4)：It burns
Knot slagging-off, obtains high-chromium alloy, in sintering process, after being heated rapidly to 1300 degrees Celsius, is sintered 10 minutes, then be cooled to rapidly
It is 100 degrees Celsius, air-cooled after keeping the temperature 200 minutes.
Comparative example：
Ferrochrome for comparison is identical as the preparation method of ferrochrome of the present invention, but does not add out chromium agent.
After testing, present invention use goes out the ferrochrome hardness higher that chromium agent prepares alloy output, and wearability is stronger.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (7)
1. a kind of ferrochrome, which is characterized in that including：Chromium, iron, manganese, molybdenum, copper, nickel, carbon, wherein each component quality accounting：
Chromium accounts for 20%~30%, and iron accounts for 60%~70%, and manganese accounts for 1%~3%, and molybdenum accounts for %2~4%, and copper accounts for 1%~2%, and nickel accounts for 1%
~3%, carbon accounts for 2%~5%.
2. ferrochrome as described in claim 1, which is characterized in that further include：The titanium of quality accounting 0.5%~2%.
3. ferrochrome as described in claim 1, which is characterized in that further include：The tungsten of quality accounting 0.1%~0.3%.
4. ferrochrome as described in claim 1, which is characterized in that further include：The vanadium of quality accounting 0.2%~0.3%.
5. ferrochrome as described in claim 1, which is characterized in that the quality accounting of chromium is 20%~25%.
6. ferrochrome as described in claim 1, which is characterized in that the quality accounting of iron is 65%~70%.
7. purposes of the ferrochrome as claimed in any one of claims 1 to 6 as high load capacity wear-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810256618.2A CN108286027A (en) | 2018-03-27 | 2018-03-27 | A kind of ferrochrome and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810256618.2A CN108286027A (en) | 2018-03-27 | 2018-03-27 | A kind of ferrochrome and its application |
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| Publication Number | Publication Date |
|---|---|
| CN108286027A true CN108286027A (en) | 2018-07-17 |
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| CN201810256618.2A Pending CN108286027A (en) | 2018-03-27 | 2018-03-27 | A kind of ferrochrome and its application |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100729A (en) * | 2007-08-15 | 2008-01-09 | 金雹峰 | Ferroalloy |
| CN105436475A (en) * | 2015-11-12 | 2016-03-30 | 丹阳恒庆复合材料科技有限公司 | Modified manufacturing process for high-chromium cast iron composite roll through forged steel roll neck and equipment |
| CN107365936A (en) * | 2017-06-15 | 2017-11-21 | 广西贺州市恒发机械铸造厂 | A kind of preparation technology of high-chromium alloy cast-iron |
-
2018
- 2018-03-27 CN CN201810256618.2A patent/CN108286027A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101100729A (en) * | 2007-08-15 | 2008-01-09 | 金雹峰 | Ferroalloy |
| CN105436475A (en) * | 2015-11-12 | 2016-03-30 | 丹阳恒庆复合材料科技有限公司 | Modified manufacturing process for high-chromium cast iron composite roll through forged steel roll neck and equipment |
| CN107365936A (en) * | 2017-06-15 | 2017-11-21 | 广西贺州市恒发机械铸造厂 | A kind of preparation technology of high-chromium alloy cast-iron |
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Application publication date: 20180717 |