CN108060345A - A kind of processing method for improving high-chromium cast iron alloy wearability - Google Patents
A kind of processing method for improving high-chromium cast iron alloy wearability Download PDFInfo
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- CN108060345A CN108060345A CN201711237146.8A CN201711237146A CN108060345A CN 108060345 A CN108060345 A CN 108060345A CN 201711237146 A CN201711237146 A CN 201711237146A CN 108060345 A CN108060345 A CN 108060345A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/103—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
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- 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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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Abstract
The invention belongs to high-chromium cast iron alloy processing technique fields, and in particular to a kind of processing method for improving high-chromium cast iron alloy wearability, including dispensing, the preparation of high-chromium cast iron alloy blank, workpiece preparation, high-frequency induction cladding and isothermal holding.The present invention has the following advantages compared with prior art：By adjusting the raw material proportioning of high-chromium cast iron alloy blank in the present invention, it is and quenched with Cosan before pouring, coordinate heat treatment process, it can avoid that more carbide is precipitated in austenite, condense fine microstructures, with preferable mechanical property, put forward the hardness of high-chromium cast iron alloy blank, then high-chromium cast iron alloy part surface is modified using intermixture, the mobility of chromium and manganese enhances, element in cladding layer is uniformly distributed, residual stress in cladding layer becomes smaller, while high-chromium alloy cast-iron high rigidity is ensured, improve the absorption impact resistance of high-chromium alloy cast-iron, and then improve its wearability, suitable for promoting the use of.
Description
Technical field
The invention belongs to high-chromium cast iron alloy processing technique fields, and in particular to a kind of raising high-chromium cast iron alloy wearability
Processing method.
Background technology
Wear-resistant material is widely used in industrial every field, and with science and technology and the height of modern industry
Speed development, the economic loss caused by the energy and metal material consumption increase caused by galling is quite surprising, according to
Statistics, the energy of the country about 30% of world industry prosperity consumes in different forms to wear, China be all in metallurgy, mine,
Electric power, coal and agricultural machinery department, every year due to losing about 40,000,000,000 dollars caused by the wear of work and corrosion, development is wear-resisting
Material has great significance to name of the country expanding economy, in recent years, for the specific operating mode and resource situation of equipment attrition,
Various new wear-resistant material is developed, mainly there is modified high manganese steel, medium managese steel, ultra-high manganese steel series, high, medium and low carbon and low-alloy
Steel series, chromium system 2 wear-resistant white cast series etc., wherein chromium system 2 wear-resistant white cast, especially high-chromium white cast iron hardness are usually high
Up to HRC63, there is good fibr tissue, there is excellent wearability, but since martensite and participation austenitic matrix are absorbed and resisted
Impact capacity is limited, and wearability is relatively low, limits the use environment of rich chromium cast iron, it is therefore desirable to how to improve high chromium white
The wearability of cast iron is studied.
The content of the invention
The purpose of the present invention is being directed to the problem of existing, a kind of processing side for improving high-chromium cast iron alloy wearability is provided
Method.
The present invention is achieved by the following technical solutions：A kind of processing method for improving high-chromium cast iron alloy wearability,
Comprise the following steps：
（1）Dispensing：High-chromium cast iron alloy is included by element proportioning, carbon 0.8-1.2%, silicon 0.6-0.8%, chromium 18-22%, manganese 2.2-
3.2%th, vanadium 0.2-0.6%, phosphorus 0.01-0.03%, nickel 0.4-0.8%, molybdenum 0.2-0.5%, nitrogen 0.2-0.4%, zinc 0.06-0.08%, it is remaining
It measures as iron and inevitable impurity；
（2）It is mixed after preparing raw material according to raw material proportioning, molten steel is obtained after being completely melt in high temperature nitrogen protective atmosphere,
The Cosan for being equivalent to its weight 0.01-0.03% is added in wherein, and stirring is poured into a mould after 3-5 minutes, is opened after its completely solidification
Mould obtains high-chromium cast iron alloy blank after being furnace-cooled to room temperature；
（3）Gained high-chromium cast iron alloy blank in electric furnace after being heat-treated twice is air-cooled to room temperature, is polished, polished with sand paper
After dry, obtain workpiece；
（4）Gained workpiece is placed in 75-85 DEG C of drying box, heat preservation 6-8 it is small when after, work piece surface coat mix
Agent, intermixture thickness are 400-600 μm, high-frequency induction cladding are then carried out in vacuum heating apparatus, particular content is：True
Under conditions of reciprocal of duty cycle is 55-75Pa, start high-frequency induction cladding equipment, raise electric current from 300-360A within the 50-60s times
To 880-900A, 60-80s is kept the temperature, high-frequency induction equipment is closed after electric current is down to 500-520A in 40s, is cooled to room temperature
；
Wherein, the intermixture includes the raw material of following parts by weight：22-26 parts of nickel 60,1-3 parts of boron carbide powders, 4-6 parts of carbonizations
Tungsten powder, 1-2 parts of lead powder ends, 10 parts of binding agents；
（5）Treated high-chromium cast iron alloy part is put into electric furnace, 2- is kept the temperature under conditions of temperature is 340-380 DEG C
4 it is small when, after cooling to obtain the final product.
As further improvement of these options, the step（2）Melt temperature be 1520-1540 DEG C.
As further improvement of these options, the step（3）Middle heat treatment content includes：It is heat-treated for the first time,
750-780 DEG C, when heat preservation 1-2 is small is warming up to, is warming up to 980-1020 DEG C after finishing, 30-40 minutes is kept the temperature, is cooled to 920-
It 930 DEG C, when heat preservation 1-2 is small, is cooled to room temperature；Second of heat treatment is 650-680 DEG C in temperature, when heat preservation 3-4 is small, water cooling
To room temperature, 520-540 DEG C is then heated to, is air-cooled to room temperature.
As further improvement of these options, the nickel 60, boron carbide powder, tungsten-carbide powder and the grain at lead powder end
Footpath is no more than 50 μm.
As further improvement of these options, described adhesive is arbitrary in sucrose solution, rosin or turpentine oil
It is a kind of.
The present invention has the following advantages compared with prior art：By adjusting the raw material of high-chromium cast iron alloy blank in the present invention
Proportioning, and it is quenched with Cosan before pouring, coordinate heat treatment process, can avoid that more carbide is precipitated in austenite,
Fine microstructures are condensed, there is preferable mechanical property, the hardness of high-chromium cast iron alloy blank are put forward, then using intermixture to Gao Ge
Cast-iron alloy part surface is modified, the mobility enhancing of chromium and manganese, and the element in cladding layer is uniformly distributed, in cladding layer
Residual stress becomes smaller, and while high-chromium alloy cast-iron high rigidity is ensured, improves the absorption shock resistance energy of high-chromium alloy cast-iron
Power, and then its wearability is improved, suitable for promoting the use of.
Specific embodiment
Embodiment 1
A kind of processing method for improving high-chromium cast iron alloy wearability, comprises the following steps：
（1）Dispensing：High-chromium cast iron alloy is included by element proportioning, carbon 1%, silicon 0.7%, chromium 20%, manganese 2.7%, vanadium 0.4%, phosphorus
0.02%th, nickel 0.6%, molybdenum 0.3%, nitrogen 0.3%, zinc 0.07%, surplus are iron and inevitable impurity；
（2）It is mixed after preparing raw material according to raw material proportioning, molten steel is obtained after being completely melt in high temperature nitrogen protective atmosphere,
The Cosan for being equivalent to its weight 0.02% is added in wherein, and stirring is poured into a mould after 4 minutes, is molded, is furnace-cooled to after its completely solidification
High-chromium cast iron alloy blank is obtained after room temperature；
（3）Gained high-chromium cast iron alloy blank in electric furnace after being heat-treated twice is air-cooled to room temperature, is polished, polished with sand paper
After dry, obtain workpiece；
（4）Gained workpiece is placed in 80 DEG C of drying box, when heat preservation 7 is small after, in work piece surface coating mixt, mixing
Agent thickness is 500 μm, and high-frequency induction cladding is then carried out in vacuum heating apparatus, and particular content is：It is 65Pa in vacuum degree
Under conditions of, start high-frequency induction cladding equipment, electric current is increased to 890A from 320A within the 55s times, 70s is kept the temperature, in 40s
Interior electric current is down to after 510A closes high-frequency induction equipment, is cooled to room temperature；
Wherein, the intermixture includes the raw material of following parts by weight：24 parts of nickel, 60,2 parts of boron carbide powders, 5 parts of tungsten-carbide powders,
1.5 parts of lead powder ends, 10 parts of binding agents；
（5）Treated high-chromium cast iron alloy part is put into electric furnace, when heat preservation 3 is small under conditions of temperature is 360 DEG C,
After cooling to obtain the final product.
Wherein, the step（2）Melt temperature be 1530 DEG C；The step（3）Middle heat treatment content includes：For the first time
Heat treatment is warming up to 760 DEG C, when heat preservation 1.5 is small, is warming up to 1000 DEG C after finishing, keeps the temperature 35 minutes, is cooled to 925 DEG C, heat preservation
1.5 it is small when, be cooled to room temperature；Second of heat treatment is 670 DEG C in temperature, and when heat preservation 3.5 is small, then water cooling to room temperature heats
To 530 DEG C, room temperature is air-cooled to；The nickel 60, boron carbide powder, tungsten-carbide powder and the grain size at lead powder end are no more than 50
μm；Described adhesive is sucrose solution.
Embodiment 2
A kind of processing method for improving high-chromium cast iron alloy wearability, comprises the following steps：
（1）Dispensing：High-chromium cast iron alloy is included by element proportioning, carbon 0.8%, silicon 0.6%, chromium 18%, manganese 3.2%, vanadium 0.2%, phosphorus
0.03%th, nickel 0.4%, molybdenum 0.2%, nitrogen 0.4%, zinc 0.08%, surplus are iron and inevitable impurity；
（2）It is mixed after preparing raw material according to raw material proportioning, molten steel is obtained after being completely melt in high temperature nitrogen protective atmosphere,
The Cosan for being equivalent to its weight 0.03% is added in wherein, and stirring is poured into a mould after five minutes, is molded, is furnace-cooled to after its completely solidification
High-chromium cast iron alloy blank is obtained after room temperature；
（3）Gained high-chromium cast iron alloy blank in electric furnace after being heat-treated twice is air-cooled to room temperature, is polished, polished with sand paper
After dry, obtain workpiece；
（4）Gained workpiece is placed in 85 DEG C of drying box, when heat preservation 6 is small after, in work piece surface coating mixt, mixing
Agent thickness is 400 μm, and high-frequency induction cladding is then carried out in vacuum heating apparatus, and particular content is：It is 55Pa in vacuum degree
Under conditions of, start high-frequency induction cladding equipment, electric current is increased to 880A from 360A within the 60s times, 60s is kept the temperature, in 40s
Interior electric current is down to after 520A closes high-frequency induction equipment, is cooled to room temperature；
Wherein, the intermixture includes the raw material of following parts by weight：22 parts of nickel, 60,1 parts of boron carbide powders, 6 parts of tungsten-carbide powders,
2 parts of lead powder ends, 10 parts of binding agents；
（5）Treated high-chromium cast iron alloy part is put into electric furnace, when heat preservation 4 is small under conditions of temperature is 340 DEG C,
After cooling to obtain the final product.
Wherein, the step（2）Melt temperature be 1520 DEG C；The step（3）Middle heat treatment content includes：For the first time
Heat treatment is warming up to 780 DEG C, when heat preservation 2 is small, is warming up to 980 DEG C after finishing, keeps the temperature 40 minutes, is cooled to 920 DEG C, heat preservation 2 is small
When, it is cooled to room temperature；Second of heat treatment is 650 DEG C in temperature, and when heat preservation 4 is small, water cooling to room temperature is then heated to 520
DEG C, it is air-cooled to room temperature；The nickel 60, boron carbide powder, tungsten-carbide powder and the grain size at lead powder end are no more than 50 μm；Institute
Adhesive is stated as rosin.
Embodiment 3
A kind of processing method for improving high-chromium cast iron alloy wearability, comprises the following steps：
（1）Dispensing：High-chromium cast iron alloy is included by element proportioning, carbon 1.2%, silicon 0.6%, chromium 22%, manganese 2.2%, vanadium 0.6%, phosphorus
0.01%th, nickel 0.8%, molybdenum 0.5%, nitrogen 0.2%, zinc 0.06%, surplus are iron and inevitable impurity；
（2）It is mixed after preparing raw material according to raw material proportioning, molten steel is obtained after being completely melt in high temperature nitrogen protective atmosphere,
The Cosan for being equivalent to its weight 0.01% is added in wherein, and stirring is poured into a mould after 3 minutes, is molded, is furnace-cooled to after its completely solidification
High-chromium cast iron alloy blank is obtained after room temperature；
（3）Gained high-chromium cast iron alloy blank in electric furnace after being heat-treated twice is air-cooled to room temperature, is polished, polished with sand paper
After dry, obtain workpiece；
（4）Gained workpiece is placed in 75 DEG C of drying box, when heat preservation 8 is small after, in work piece surface coating mixt, mixing
Agent thickness is 600 μm, and high-frequency induction cladding is then carried out in vacuum heating apparatus, and particular content is：It is 75Pa in vacuum degree
Under conditions of, start high-frequency induction cladding equipment, electric current is increased to 900A from 300A within the 50s times, 80s is kept the temperature, in 40s
Interior electric current is down to after 500A closes high-frequency induction equipment, is cooled to room temperature；
Wherein, the intermixture includes the raw material of following parts by weight：26 parts of nickel, 60,3 parts of boron carbide powders, 4 parts of tungsten-carbide powders,
1 part of lead powder end, 10 parts of binding agents；
（5）Treated high-chromium cast iron alloy part is put into electric furnace, when heat preservation 2 is small under conditions of temperature is 380 DEG C,
After cooling to obtain the final product.
Wherein, the step（2）Melt temperature be 1540 DEG C；The step（3）Middle heat treatment content includes：For the first time
Heat treatment is warming up to 750 DEG C, when heat preservation 1 is small, is warming up to 1020 DEG C after finishing, keeps the temperature 30 minutes, is cooled to 930 DEG C, heat preservation 1
Hour, it is cooled to room temperature；Second of heat treatment is 680 DEG C in temperature, and when heat preservation 3 is small, water cooling to room temperature is then heated to 540
DEG C, it is air-cooled to room temperature；The nickel 60, boron carbide powder, tungsten-carbide powder and the grain size at lead powder end are no more than 50 μm；Institute
Adhesive is stated as turpentine oil.
Control group 1 is set, manganese content in embodiment 1 is revised as 1.5%, remaining content is constant；Control group 2 is set, it will be real
It applies Cosan in example 1 to remove, remaining content is constant；Control group 3 is set, by step in embodiment 1（4）Middle boron carbide powder is gone
Fall, remaining content is constant；Control group 4 is set, by 1 step of embodiment（4）Middle lead powder end is removed, remaining content is constant；
Each group rich chromium cast iron performance is studied, obtains following result：
Table 1
| Group | Hardness（HRC） | Bending strength（MPa） | Impact flexibility（J/cm²） |
| Embodiment 1 | 65.8 | 1948 | 11.4 |
| Embodiment 2 | 65.2 | 1943 | 11.2 |
| Embodiment 3 | 65.7 | 1945 | 11.4 |
| Control group 1 | 63.8 | 1907 | 10.8 |
| Control group 2 | 63.2 | 1904 | 10.7 |
| Control group 3 | 64.7 | 1923 | 10.2 |
| Control group 4 | 64.8 | 1915 | 10.3 |
Can be seen that the present invention by data in the present invention, impact flexibility is significantly improved compared with prior art, medium-high frequency
Sensing cladding is affected to it；Hardness and bending strength are affected by raw material proportioning and process；In identical abrasion
Under the conditions of（Two bodies of ML-10 cut mill damage experiment）, the wearability of antiwear high-chromium cast iron is compared to existing in the embodiment of the present invention
Cr15Mo3 rich chromium cast irons improve more than 40%.
Claims (5)
1. a kind of processing method for improving high-chromium cast iron alloy wearability, which is characterized in that comprise the following steps：
（1）Dispensing：High-chromium cast iron alloy is included by element proportioning, carbon 0.8-1.2%, silicon 0.6-0.8%, chromium 18-22%, manganese 2.2-
3.2%th, vanadium 0.2-0.6%, phosphorus 0.01-0.03%, nickel 0.4-0.8%, molybdenum 0.2-0.5%, nitrogen 0.2-0.4%, zinc 0.06-0.08%, it is remaining
It measures as iron and inevitable impurity；
（2）It is mixed after preparing raw material according to raw material proportioning, molten steel is obtained after being completely melt in high temperature nitrogen protective atmosphere,
The Cosan for being equivalent to its weight 0.01-0.03% is added in wherein, and stirring is poured into a mould after 3-5 minutes, is opened after its completely solidification
Mould obtains high-chromium cast iron alloy blank after being furnace-cooled to room temperature；
（3）Gained high-chromium cast iron alloy blank in electric furnace after being heat-treated twice is air-cooled to room temperature, is polished, polished with sand paper
After dry, obtain workpiece；
（4）Gained workpiece is placed in 75-85 DEG C of drying box, heat preservation 6-8 it is small when after, work piece surface coat mix
Agent, intermixture thickness are 400-600 μm, high-frequency induction cladding are then carried out in vacuum heating apparatus, particular content is：True
Under conditions of reciprocal of duty cycle is 55-75Pa, start high-frequency induction cladding equipment, raise electric current from 300-360A within the 50-60s times
To 880-900A, 60-80s is kept the temperature, high-frequency induction equipment is closed after electric current is down to 500-520A in 40s, is cooled to room temperature
；
Wherein, the intermixture includes the raw material of following parts by weight：22-26 parts of nickel 60,1-3 parts of boron carbide powders, 4-6 parts of carbonizations
Tungsten powder, 1-2 parts of lead powder ends, 10 parts of binding agents；
（5）Treated high-chromium cast iron alloy part is put into electric furnace, 2- is kept the temperature under conditions of temperature is 340-380 DEG C
4 it is small when, after cooling to obtain the final product.
A kind of 2. processing method for improving high-chromium cast iron alloy wearability as described in claim 1, which is characterized in that the step
（2）Melt temperature be 1520-1540 DEG C.
A kind of 3. processing method for improving high-chromium cast iron alloy wearability as described in claim 1, which is characterized in that the step
（3）Middle heat treatment content includes：It is heat-treated for the first time, is warming up to 750-780 DEG C, when heat preservation 1-2 is small, is warming up to 980- after finishing
1020 DEG C, 30-40 minutes are kept the temperature, 920-930 DEG C is cooled to, when heat preservation 1-2 is small, is cooled to room temperature；Second of heat treatment, in temperature
It spends for 650-680 DEG C, when heat preservation 3-4 is small, water cooling to room temperature is then heated to 520-540 DEG C, is air-cooled to room temperature.
A kind of 4. processing method for improving high-chromium cast iron alloy wearability as described in claim 1, which is characterized in that the nickel
60th, the grain size of boron carbide powder, tungsten-carbide powder and lead powder end is no more than 50 μm.
A kind of 5. processing method for improving high-chromium cast iron alloy wearability as described in claim 1, which is characterized in that the bonding
Agent is any one in sucrose solution, rosin or turpentine oil.
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Cited By (5)
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| CN108660366A (en) * | 2018-06-06 | 2018-10-16 | 含山县东山德雨球墨铸造厂 | A kind of preparation method of high-strength abrasion-proof ball |
| CN109136917A (en) * | 2018-09-18 | 2019-01-04 | 大连海事大学 | A kind of induction cladding coating preparation method improving Wear Resistance of Gray Cast Iron energy |
| CN110042305A (en) * | 2019-04-22 | 2019-07-23 | 太原科技大学 | A kind of anti-corrosive properties, wearability high-chromium cast iron alloy and preparation method thereof |
| CN110106435A (en) * | 2019-05-07 | 2019-08-09 | 徐州天太机械制造有限公司 | A kind of high-strength abrasion-proof cast iron fittings and preparation method thereof |
| CN113564495A (en) * | 2021-07-14 | 2021-10-29 | 四川省柏均机械制造有限责任公司 | High-chromium cast iron and liquid cooling method for high-chromium cast iron |
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| CN108660366A (en) * | 2018-06-06 | 2018-10-16 | 含山县东山德雨球墨铸造厂 | A kind of preparation method of high-strength abrasion-proof ball |
| CN109136917A (en) * | 2018-09-18 | 2019-01-04 | 大连海事大学 | A kind of induction cladding coating preparation method improving Wear Resistance of Gray Cast Iron energy |
| CN110042305A (en) * | 2019-04-22 | 2019-07-23 | 太原科技大学 | A kind of anti-corrosive properties, wearability high-chromium cast iron alloy and preparation method thereof |
| CN110106435A (en) * | 2019-05-07 | 2019-08-09 | 徐州天太机械制造有限公司 | A kind of high-strength abrasion-proof cast iron fittings and preparation method thereof |
| CN113564495A (en) * | 2021-07-14 | 2021-10-29 | 四川省柏均机械制造有限责任公司 | High-chromium cast iron and liquid cooling method for high-chromium cast iron |
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| CN108060345B (en) | 2020-08-11 |
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