CN108385016A - A method of improving the wear resistance of iron casting - Google Patents
A method of improving the wear resistance of iron casting Download PDFInfo
- Publication number
- CN108385016A CN108385016A CN201810541900.5A CN201810541900A CN108385016A CN 108385016 A CN108385016 A CN 108385016A CN 201810541900 A CN201810541900 A CN 201810541900A CN 108385016 A CN108385016 A CN 108385016A
- Authority
- CN
- China
- Prior art keywords
- iron
- powder
- casting
- added
- wear resistance
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/08—Manufacture of cast-iron
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The present invention relates to pig iron casting technology field, specially a kind of method for the wear resistance improving iron casting；A method of improving the wear resistance of iron casting, anti-wear additive is added in the pig iron before casting, and each material mass portion rate of the anti-wear additive is as follows：0.1 0.4 parts of silica flour, 8 14 parts of manganese powder, 15 parts of tungsten powder, 28 parts of chromium powder；The obtained iron casting of the present invention can generate manganese sulfide by manganese in melting with harmful elements such as sulphur in the pig iron, into in clinker convenient for remove, the silica flour being added into molten iron can promote the graphitization of carbon, raw material can be provided for the tungsten powder being next added to form tungsten carbide particles, so as to effectively improve the wear-resisting property and hardness of the pig iron.
Description
Technical field
The present invention relates to pig iron casting technology field, specially a kind of method for the wear resistance improving iron casting.
Background technology
The pig iron is the iron-carbon alloy that phosphorus content is more than 2%, and commercial iron phosphorus content contains generally in 2.11%--4.3%
C, the elements such as Si, Mn, S, P are the product through blast furnace process with iron ore.According to the difference of carbon existing forms in the pig iron, and can
It is several to be divided into conversion pig, foundry iron and spheroidal graphite cast-iron etc..
Pig iron performance is hard, wear-resisting, castability is good, but the pig iron is crisp, cannot forge and press.
China is developing country, and the demand to casting is more and more, but no matter casting is in quality or in quantity side
Face has prodigious gap with developed country.Therefore, the Foundry Production in China still grows a lot space, and ironcasting accounts for entirely
The 70%-80% of casting output.
High speed development with the progress of modern science and technology, especially space flight and aviation and extensive atomic utilization,
The appearance of the infant industries such as ocean development proposes increasingly higher demands, traditional metal or alloy material to structural material
It is difficult to meet the needs of application, metal-base composites is with the spies such as its high specific strength, specific modulus, high temperature resistant, wear-resistant in recent years
Different performance causes the great attention of countries in the world.Developed country such as U.S., Japan etc. oneself the research of this kind of material is classified as 21
The emphasis of century new material exploitation.Pig iron based composites are also more and more widely used in casting industry, current pig iron base
Composite material flow is complicated, equipment requirement is high, production economy is poor, Wear Resistance is insufficient, is not suitable for industrial mass manufacture.
Such as Application Number (patent) is a kind of wear resistance improving iron casting disclosed in CN201610520309.2
Method, a kind of method for the wear resistance improving iron casting of the disclosure of the invention, including：Step (1) heats the pig iron
To molten state, become molten iron, nitrogen, which is heated to 1000~1200 DEG C, in advance becomes hot nitrogen, as hot nitrogen is into molten iron
Activated carbon is sprayed into, the grain size of activated carbon is 40~60nm, and after having sprayed activated carbon, reusable heat nitrogen sprays into sulphur and iron into molten iron,
The grain size of sulphur is 20~30nm；Step (2) cast molding；Step (3) is cooling, and the cooling velocity for controlling casting is 10~20 DEG C/
Min uses natural cooling later until being cooled to 1000 DEG C, in the stage of control cooling velocity, also uses temperature for 1000 DEG C
Nitrogen blow silicon, the grain size of silicon is 78~89nm, and silicon is 0.03~0.06 relative to the mass ratio of molten iron:1000.The present invention
The wear resistance of the casting produced is excellent, has higher hardness.
But it is largely added to the harmful elements such as S in the invention, can greatly destroy the properties of the pig iron, inside it shape
At various defects, many problems are brought for product quality.
Invention content
The present invention provides a kind of method for the wear resistance improving iron casting, which can effectively solve
Above-mentioned technical problem.
In order to achieve the above object, the present invention is achieved by the following technical programs：
A method of improving the wear resistance of iron casting, anti-wear additive is added in the pig iron before casting, institute
Each material mass portion rate for stating anti-wear additive is as follows：0.1-0.4 parts of silica flour, 8-14 parts of manganese powder, 1-5 parts of tungsten powder, chromium powder 2-8
Part.
Preferably, the method for the wear resistance for improving iron casting includes the following steps：
1) pig iron melts：The pig iron to be cast is added in smelting furnace, starts and is liquid by pig iron melting, keep the temperature 10-
15min；
2) it cleans；Manganese powder is added after the completion of hot-metal insulating, continues to keep the temperature 30-60min and skim after heat preservation to come out of the stove；
3) Graphite Precipitation：Silica flour is added into molten iron after step 2 end, promotes the graphitizing process of molten iron, and adding
20-40min is kept the temperature after entering silica flour；
4) modified casting：Tungsten powder and chromium powder are added into molten iron after step 3 end, keeps the temperature 15-45min, and persistently stir
Mix, after molten iron is poured into mold,
Preferably, the grain size of the silica flour is 300-500 mesh.
Preferably, the grain size of the manganese powder, chromium powder and tungsten powder is 400-600 mesh.
Preferably, the temperature kept the temperature in the step 1-4 is 1550-1700 DEG C.
Preferably, the rate stirred in step 4 is 5-10rad/min.
The present invention's has the advantages that：
The obtained iron casting of the present invention can generate sulphur by manganese in melting with harmful elements such as sulphur in the pig iron
Change manganese, into, convenient for removing, the silica flour being added into molten iron can promote the graphitization of carbon, can next be added in clinker
Tungsten powder provides raw material to form tungsten carbide particles, so as to effectively improve the wear-resisting property and hardness of the pig iron.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Embodiment 1：
A method of improving the wear resistance of iron casting, anti-wear additive is added in the pig iron before casting, institute
Each material mass portion rate for stating anti-wear additive is as follows：0.2 part of silica flour, 14 parts of manganese powder, 1 part of tungsten powder, 6 parts of chromium powder.
Preferably, the method for the wear resistance for improving iron casting includes the following steps：
1) pig iron melts：The pig iron to be cast is added in smelting furnace, starts and is liquid, heat preservation by pig iron melting
10min；
2) it cleans；Manganese powder is added after the completion of hot-metal insulating, continues to keep the temperature 40min and skim after heat preservation to come out of the stove；
3) Graphite Precipitation：Silica flour is added into molten iron after step 2 end, promotes the graphitizing process of molten iron, and adding
20min is kept the temperature after entering silica flour；
4) modified casting：Tungsten powder and chromium powder are added into molten iron after step 3 end, keeps the temperature 25min, and continue to stir,
After molten iron is poured into mold,
Preferably, the grain size of the silica flour is 300 mesh.
Preferably, the grain size of the manganese powder, chromium powder and tungsten powder is 600 mesh.
Preferably, the temperature kept the temperature in the step 1-4 is 1550 DEG C.
Preferably, the rate stirred in step 4 is 5rad/min.
Embodiment 2：
A method of improving the wear resistance of iron casting, anti-wear additive is added in the pig iron before casting, institute
Each material mass portion rate for stating anti-wear additive is as follows：0.3 part of silica flour, 12 parts of manganese powder, 2 parts of tungsten powder, 4 parts of chromium powder.
Preferably, the method for the wear resistance for improving iron casting includes the following steps：
1) pig iron melts：The pig iron to be cast is added in smelting furnace, starts and is liquid, heat preservation by pig iron melting
15min；
2) it cleans；Manganese powder is added after the completion of hot-metal insulating, continues to keep the temperature 30min and skim after heat preservation to come out of the stove；
3) Graphite Precipitation：Silica flour is added into molten iron after step 2 end, promotes the graphitizing process of molten iron, and adding
30min is kept the temperature after entering silica flour；
4) modified casting：Tungsten powder and chromium powder are added into molten iron after step 3 end, keeps the temperature 35min, and continue to stir,
After molten iron is poured into mold,
Preferably, the grain size of the silica flour is 400 mesh.
Preferably, the grain size of the manganese powder, chromium powder and tungsten powder is 400 mesh.
Preferably, the temperature kept the temperature in the step 1-4 is 1600 DEG C.
Preferably, the rate stirred in step 4 is 8rad/min.
Embodiment 3：
A method of improving the wear resistance of iron casting, anti-wear additive is added in the pig iron before casting, institute
Each material mass portion rate for stating anti-wear additive is as follows：0.1 part of silica flour, 10 parts of manganese powder, 4 parts of tungsten powder, 2 parts of chromium powder.
Preferably, the method for the wear resistance for improving iron casting includes the following steps：
1) pig iron melts：The pig iron to be cast is added in smelting furnace, starts and is liquid, heat preservation by pig iron melting
12min；
2) it cleans；Manganese powder is added after the completion of hot-metal insulating, continues to keep the temperature 60min and skim after heat preservation to come out of the stove；
3) Graphite Precipitation：Silica flour is added into molten iron after step 2 end, promotes the graphitizing process of molten iron, and adding
40min is kept the temperature after entering silica flour；
4) modified casting：Tungsten powder and chromium powder are added into molten iron after step 3 end, keeps the temperature 45min, and continue to stir,
After molten iron is poured into mold,
Preferably, the grain size of the silica flour is 500 mesh.
Preferably, the grain size of the manganese powder, chromium powder and tungsten powder is 500 mesh.
Preferably, the temperature kept the temperature in the step 1-4 is 1650 DEG C.
Preferably, the rate stirred in step 4 is 10rad/min.
Embodiment 4：
A method of improving the wear resistance of iron casting, anti-wear additive is added in the pig iron before casting, institute
Each material mass portion rate for stating anti-wear additive is as follows：0.4 part of silica flour, 8 parts of manganese powder, 5 parts of tungsten powder, 8 parts of chromium powder.
Preferably, the method for the wear resistance for improving iron casting includes the following steps：
1) pig iron melts：The pig iron to be cast is added in smelting furnace, starts and is liquid, heat preservation by pig iron melting
13min；
2) it cleans；Manganese powder is added after the completion of hot-metal insulating, continues to keep the temperature 50min and skim after heat preservation to come out of the stove；
3) Graphite Precipitation：Silica flour is added into molten iron after step 2 end, promotes the graphitizing process of molten iron, and adding
20min is kept the temperature after entering silica flour；
4) modified casting：Tungsten powder and chromium powder are added into molten iron after step 3 end, keeps the temperature 15min, and continue to stir,
After molten iron is poured into mold,
Preferably, the grain size of the silica flour is 400 mesh.
Preferably, the grain size of the manganese powder, chromium powder and tungsten powder is 500 mesh.
Preferably, the temperature kept the temperature in the step 1-4 is 1700 DEG C.
Preferably, the rate stirred in step 4 is 6rad/min.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (6)
1. a kind of method for the wear resistance improving iron casting, which is characterized in that the pig iron is added wear-resisting before casting
Each material mass portion rate of additive, the anti-wear additive is as follows：0.1-0.4 parts of silica flour, 8-14 parts of manganese powder, tungsten powder 1-5
Part, 2-8 parts of chromium powder.
2. a kind of method of wear resistance improving iron casting as described in claim 1, which is characterized in that the improvement
The method of the wear resistance of iron casting includes the following steps：
1) pig iron melts：The pig iron to be cast is added in smelting furnace, starts and is liquid by pig iron melting, keep the temperature 10-
15min；
2) it cleans；Manganese powder is added after the completion of hot-metal insulating, continues to keep the temperature 30-60min and skim after heat preservation to come out of the stove；
3) Graphite Precipitation：Silica flour is added into molten iron after step 2 end, promotes the graphitizing process of molten iron, and silicon is being added
20-40min is kept the temperature after powder；
4) modified casting：Tungsten powder and chromium powder are added into molten iron after step 3 end, keeps the temperature 15-45min, and continue to stir, ties
Molten iron is poured into mold after beam.
3. a kind of method of wear resistance improving iron casting as described in claim 1, it is characterised in that：The silica flour
Grain size be 300-500 mesh.
4. a kind of method of wear resistance improving iron casting as described in claim 1, it is characterised in that：The manganese
The grain size of powder, chromium powder and tungsten powder is 400-600 mesh.
5. a kind of method of wear resistance improving iron casting as claimed in claim 2, it is characterised in that：The step
The temperature kept the temperature in 1-4 is 1550-1700 DEG C.
6. a kind of method of wear resistance improving iron casting as claimed in claim 2, it is characterised in that：In step 4
The rate of stirring is 5-10rad/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541900.5A CN108385016A (en) | 2018-05-30 | 2018-05-30 | A method of improving the wear resistance of iron casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541900.5A CN108385016A (en) | 2018-05-30 | 2018-05-30 | A method of improving the wear resistance of iron casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108385016A true CN108385016A (en) | 2018-08-10 |
Family
ID=63071483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810541900.5A Pending CN108385016A (en) | 2018-05-30 | 2018-05-30 | A method of improving the wear resistance of iron casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108385016A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112245A (en) * | 2018-10-16 | 2019-01-01 | 含山县林头宝兴铸造厂 | A method of improving iron casting abrasion resistance properties |
| CN110358887A (en) * | 2019-08-23 | 2019-10-22 | 安徽博晟亿电力科技有限公司 | A kind of casting method improving iron casting hardness |
| CN113846205A (en) * | 2021-10-10 | 2021-12-28 | 济南市酉金工贸有限公司 | Spheroidized filament and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07173570A (en) * | 1993-12-16 | 1995-07-11 | Riken Corp | Roller for rotary compressor |
| JPH09170040A (en) * | 1995-12-19 | 1997-06-30 | Sumitomo Metal Ind Ltd | High speed steel type cast iron material containing crystallized graphite, excellent in surface roughting resistance |
| CN1202531A (en) * | 1998-01-23 | 1998-12-23 | 中南工业大学 | Chromium-manganese-tungsten wear resisting cast iron |
| CN103757527A (en) * | 2013-12-13 | 2014-04-30 | 芜湖金鹰机械科技开发有限公司 | Wear-resistance medium-chromium multi-element alloy casting ball material and preparation method thereof |
| CN105671421A (en) * | 2016-04-22 | 2016-06-15 | 柳州凯通新材料科技有限公司 | Cr-Mn-W white cast iron and preparation technology thereof |
| CN106011374A (en) * | 2016-06-29 | 2016-10-12 | 农杰 | Method for improving wear resistance of pig iron casting |
-
2018
- 2018-05-30 CN CN201810541900.5A patent/CN108385016A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07173570A (en) * | 1993-12-16 | 1995-07-11 | Riken Corp | Roller for rotary compressor |
| JPH09170040A (en) * | 1995-12-19 | 1997-06-30 | Sumitomo Metal Ind Ltd | High speed steel type cast iron material containing crystallized graphite, excellent in surface roughting resistance |
| CN1202531A (en) * | 1998-01-23 | 1998-12-23 | 中南工业大学 | Chromium-manganese-tungsten wear resisting cast iron |
| CN103757527A (en) * | 2013-12-13 | 2014-04-30 | 芜湖金鹰机械科技开发有限公司 | Wear-resistance medium-chromium multi-element alloy casting ball material and preparation method thereof |
| CN105671421A (en) * | 2016-04-22 | 2016-06-15 | 柳州凯通新材料科技有限公司 | Cr-Mn-W white cast iron and preparation technology thereof |
| CN106011374A (en) * | 2016-06-29 | 2016-10-12 | 农杰 | Method for improving wear resistance of pig iron casting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112245A (en) * | 2018-10-16 | 2019-01-01 | 含山县林头宝兴铸造厂 | A method of improving iron casting abrasion resistance properties |
| CN110358887A (en) * | 2019-08-23 | 2019-10-22 | 安徽博晟亿电力科技有限公司 | A kind of casting method improving iron casting hardness |
| CN113846205A (en) * | 2021-10-10 | 2021-12-28 | 济南市酉金工贸有限公司 | Spheroidized filament and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103526126A (en) | Tool steel roller for rolling medium-thickness plate and manufacturing method thereof | |
| CN108385016A (en) | A method of improving the wear resistance of iron casting | |
| CN103882287B (en) | Narrow neck press glass-blowing mold materials and preparation method thereof | |
| CN106048461B (en) | A kind of heat resisting cast steel and preparation method thereof | |
| CN102220541B (en) | High chromium cast iron containing SiC powder, preparation method thereof and wear resistant casting | |
| CN103014532A (en) | High-abrasion-resistance composite roller and preparation method thereof | |
| CN105964983A (en) | Production process of compound type imbedding squeeze roller | |
| CN100575528C (en) | Cobalt less multi element high speed tool steel and manufacture method thereof | |
| CN100408189C (en) | Method for producing medium chromium tungsten-containing composite anti-wear roll ring | |
| CN106367554B (en) | Iron and useful metal and the method for producing slag wool are extracted in a kind of secondary resource | |
| CN113174527A (en) | Method for producing nodular cast iron by casting green sand | |
| CN103866076B (en) | A kind of compact type production method of austenitic stainless steel | |
| CN103436767A (en) | Manufacturing method for abrasion-resistant steel casting | |
| CN106755724A (en) | It is a kind of to be applied to the smelting technology that 3 tons of intermediate frequency furnaces produce nodulizer | |
| CN101386963A (en) | Production method of low carbon steel ball | |
| CN105970077A (en) | High-strength and high-toughness ductile cast iron and preparation method thereof | |
| CN103008617B (en) | Method for preparing high-speed steel composite roll for hot rolling | |
| CN105671418A (en) | Novel preparation method for high-chromium cast iron | |
| CN104789873A (en) | Rolling mill segmentation wheel and regeneration manufacturing process thereof | |
| CN106180651A (en) | A kind of production technology of high abrasion castingin hammer dish | |
| CN101956124A (en) | Wear-resistant high holding precision rolling rear working roller and production method thereof | |
| CN100382892C (en) | Method for producing high chromium tungsten-containing composite anti-wear roll ring | |
| CN111057938A (en) | Processing technology of heat-resistant, wear-resistant and corrosion-resistant high-chromium heat-resistant alloy | |
| CN105401063A (en) | As-cast malleable cast iron cylinder sleeve produced through centrifugal casting and production process of as-cast malleable cast iron cylinder sleeve | |
| CN110000386A (en) | A method of balance weight iron or components blank are prepared using steel scrap thin material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180810 |
|
| RJ01 | Rejection of invention patent application after publication |