CN104073713B - A kind of bainite ductile iron abrading-ball - Google Patents
A kind of bainite ductile iron abrading-ball Download PDFInfo
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- CN104073713B CN104073713B CN201410364543.1A CN201410364543A CN104073713B CN 104073713 B CN104073713 B CN 104073713B CN 201410364543 A CN201410364543 A CN 201410364543A CN 104073713 B CN104073713 B CN 104073713B
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Abstract
The invention discloses a kind of bainite ductile iron abrading-ball, its component includes by weight percentage: C:4.00 4.20%, Si:2.10 2.50%, Mn:0.55 0.75%, Mo:0.60 0.80%, Cu:0.30 0.45%, Cr:0.36 0.46%, Mg:0.03 0.06%, Al:0.01 0.03%, Ni:0.02 0.08%, Ti:0.04 0.05%, Re:0.02 0.04%, B:0.01 0.03%, S:0.01 0.03%, P:0.04 0.06%, remaining is Fe and inevitable impurity.Anti-wear performance of the present invention is good, and hardness reaches 60 64HRC, and toughness also reaches 13 14J/cm2, needed for meeting commercial production.
Description
Technical field
The present invention relates to abrading-ball technical field, particularly relate to a kind of bainite ductile iron abrading-ball.
Background technology
Ball mill is one of widely used Super-fine grinder machinery in commercial production.Ball mill steel ball is that ball mill sets
Standby grinding material medium, produces grinding by the collision friction between ball mill steel ball, between steel ball and material
Effect, thus the particle diameter of material is reduced further.In prior art, mill Jie's steel ball of ball mill is mainly
The ball milling steel-casting such as chromium alloy, Mn series alloy or nodular cast iron part, such as high chrome ball, low-chrome steel ball, many
Unit alloy steel ball and vanadium-titanium-chromium alloy steel ball etc., its target mostly is cement, coal, Ore, cinder etc..
The hardness of coal pulverizer steel ball ball in use and wearability be affect coal pulverizer shaping effect principal element it
One.In order to improve the durability of crushing efficiency and steel ball, steel ball surface is needed to have enough hardness and abrasion resistance.
Meanwhile, in process of lapping, occur between steel ball and abrasive material, steel ball and liner plate and steel ball and steel ball rushes
Hit inevitable, therefore, also require that steel ball has certain toughness, it is to avoid broken ball, this just composition to steel ball
Higher requirement is proposed.
Summary of the invention
The technical problem that basic background technology exists, the present invention proposes a kind of bainite ductile iron abrading-ball, wear-resisting
Performance is good, and hardness reaches 60-64HRC, and toughness also reaches 13-14J/cm2, needed for meeting commercial production.
A kind of bainite ductile iron abrading-ball that the present invention proposes, its component includes by weight percentage: C:
4.00-4.20%, Si:2.10-2.50%, Mn:0.55-0.75%, Mo:0.60-0.80%, Cu:0.30-0.45%,
Cr:0.36-0.46%, Mg:0.03-0.06%, Al:0.01-0.03%, Ni:0.02-0.08%, Ti:
0.04-0.05%, Re:0.02-0.04%, B:0.01-0.03%, S:0.01-0.03%, P:0.04-0.06%,
Remaining is Fe and inevitable impurity；
Preparation process includes melting, nodularization, pours into a mould, quenches, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel are placed in furnace cupola
Carry out melting, furnace cupola temperature is risen to 1400-1450 DEG C, be incubated 15-20min, add magnesium ingot, aluminum
After ingot and titanium ingot, temperature is risen to 1460-1500 DEG C, be incubated 10-15min, aluminium alloy surface will be floated over
After slag is pulled out, obtain induction furnace residual metallic liquid and be aluminium alloy A；
S2, nodularization: after adding nodulizer, inovulant and ferrosilicon in aluminium alloy A, temperature is maintained
1460-1500 DEG C, insulation 5-7min obtains nodularization aluminium alloy；
S3, cast: after being poured into by nodularization aluminium alloy in mould, treat that nodularization aluminium alloy temperature is down to 960-980 DEG C
Time take out, obtain bainite ductile iron abrading-ball idiosome, wherein pouring temperature is 1350-1380 DEG C；
S4, quenching: bainite ductile iron abrading-ball idiosome is carried out oil quenching, treat bainite ductile iron abrading-ball idiosome temperature
It is down to when 290-300 DEG C take out, is then placed in the constant-temperature oven that temperature is 330-340 DEG C being incubated
After 45-55min, taking out air cooling and obtain bainite ductile iron abrading-ball, wherein the thermal medium that adds in constant-temperature oven is melted
Mg (NO3)2、KNO3、LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be
24-26:54-56:19-21。
Preferably, in the S1 of preparation process, by the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium
Steel is placed in furnace cupola and carries out melting, and furnace cupola temperature is risen to 1420-1430 DEG C, is incubated 16-18min,
After adding magnesium ingot, aluminium ingot and titanium ingot, temperature is risen to 1470-1480 DEG C, be incubated 12-13min, will be floating
After the slag on aluminium alloy surface is pulled out, obtain induction furnace residual metallic liquid and be aluminium alloy A.
Preferably, in the S3 of preparation process, after being poured into by nodularization aluminium alloy in mould, treat nodularization alloy liquid temperature
Degree is down to when 965-975 DEG C take out, and obtains bainite ductile iron abrading-ball idiosome, and wherein pouring temperature is
1360-1370℃。
Preferably, in the S4 of preparation process, bainite ductile iron abrading-ball idiosome is carried out oil quenching, treats bainite ball
Ferrum abrading-ball idiosome temperature is down to when 292-298 DEG C take out, and is then placed in the constant-temperature oven that temperature is 334-336 DEG C
After carrying out being incubated 47-53min, taking out air cooling and obtain bainite ductile iron abrading-ball, wherein the heating in constant-temperature oven is situated between
Matter is melted Mg (NO3)2、KNO3、LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be
25:55:20。
When being produced various ferrum or ferroalloy by iron ore, owing to iron mine being often associated with the metal such as phosphorus, sulfur
Or nonmetallic ore, cause final ferrum or ferroalloy contain the element such as phosphorus, sulfur and the impurity being difficult to avoid that.
The present invention uses the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel to coordinate as aluminium alloy A
Major ingredient, it is achieved the requirement that the present invention is high for spheroidization of graphite wear-resistant ball density and impact flexibility is high, improve stone
Tampon wear-resistant ball in use grinding efficiency, strengthens the ruggedness of spheroidization of graphite wear-resistant ball；Add magnesium ingot,
Aluminium ingot and titanium ingot cooperate, and aluminium alloy A carries out deoxidation denitrogenation, reduce oxide and nitrogen in aluminium alloy A
The content of compound, improve further spheroidization of graphite wear-resistant ball service life, and magnesium, aluminum and titanium three kinds
Element residual in spheroidization of graphite wear-resistant ball improves the corrosion resistant ability of spheroidization of graphite wear-resistant ball；Add nodularization
Agent, inovulant and ferrosilicon, make to be formed in spheroidization of graphite wear-resistant ball ball graphite, it is to avoid or reduce spheroidization of graphite
There is the situation of cracking in wear-resistant ball；In quenching process, the thermal medium that adds of constant-temperature oven is melted Mg (NO3)2、KNO3、
LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be 24-26:54-56:19-21, be greatly improved
The coefficient of heat transfer of constant-temperature oven, makes the austenite in spheroidization of graphite wear-resistant ball be converted to lower bainite, significantly
Improve the toughness of ball-type alloy substrate；And quenching process is casting waste heat progressive austempering, first use oil quenching
Mode, makes the temperature rapid decrease of wear-resistant ball idiosome, avoids upper bainite and forms district, then passes through isothermal hardening
Mode, make wear-resistant ball idiosome carry out lower bainite isothermal transformation, alloy addition can be greatly lowered, greatly
Having saved greatly production cost, compared with single isothermal quenching technique, technique is easier.After testing, stone
The hardness of tampon wear-resistant ball reaches 60-64HRC, and toughness has also reached 13-14J/cm2, meet industry raw
Produce required.
Detailed description of the invention
Below, by specific embodiment, technical scheme is described in detail.
Embodiment 1
A kind of bainite ductile iron abrading-ball that the present invention proposes, its component includes by weight percentage: C:4.00%,
Si:2.50%, Mn:0.55%, Mo:0.80%, Cu:0.30%, Cr:0.46%, Mg:0.03%, Al:
0.01%, Ni:0.08%, Ti:0.04%, Re:0.02%, B:0.03%, S:0.01%, P:0.06%,
Remaining is Fe and inevitable impurity；
Preparation process includes melting, nodularization, pours into a mould, quenches, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel are placed in furnace cupola
Carry out melting, furnace cupola temperature is risen to 1450 DEG C, be incubated 15min, add magnesium ingot, aluminium ingot and titanium ingot
After, temperature is risen to 1500 DEG C, is incubated 10min, after the slag floating over aluminium alloy surface is pulled out, obtains
Induction furnace residual metallic liquid is aluminium alloy A；
S2, nodularization: after adding nodulizer, inovulant and ferrosilicon in aluminium alloy A, temperature is maintained 1500 DEG C,
Insulation 5min obtains nodularization aluminium alloy；
S3, cast: after being poured into by nodularization aluminium alloy in mould, took when nodularization aluminium alloy temperature is down to 980 DEG C
Going out, obtain bainite ductile iron abrading-ball idiosome, wherein pouring temperature is 1350 DEG C；
S4, bainite ductile iron abrading-ball idiosome is carried out oil quenching, treat that bainite ductile iron abrading-ball idiosome temperature is down to
Take out when 298 DEG C, after being then placed in the constant-temperature oven that temperature is 334 DEG C carrying out being incubated 53min, take out air cooling
Obtaining bainite ductile iron abrading-ball, wherein the thermal medium that adds in constant-temperature oven is melted Mg (NO3)2、KNO3、LiNO3
Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be 25:55:20.
Embodiment 2
A kind of bainite ductile iron abrading-ball that the present invention proposes, its component includes by weight percentage: C:4.08%,
Si:2.30%, Mn:0.60%, Mo:0.75%, Cu:0.35%, Cr:0.43%, Mg:0.04%, Al:
0.03%, Ni:0.06%, Ti:0.04%, Re:0.03%, B:0.02%, S:0.02%, P:0.05%,
Remaining is Fe and inevitable impurity；
Preparation process includes melting, nodularization, pours into a mould, quenches, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel are placed in furnace cupola
Carry out melting, furnace cupola temperature is risen to 1420 DEG C, be incubated 18min, add magnesium ingot, aluminium ingot and titanium ingot
After, temperature is risen to 1470 DEG C, is incubated 13min, after the slag floating over aluminium alloy surface is pulled out, obtains
Induction furnace residual metallic liquid is aluminium alloy A；
S2, nodularization: after adding nodulizer, inovulant and ferrosilicon in aluminium alloy A, temperature is maintained 1470 DEG C,
Insulation 6min obtains nodularization aluminium alloy；
S3, cast: after being poured into by nodularization aluminium alloy in mould, took when nodularization aluminium alloy temperature is down to 965 DEG C
Going out, obtain bainite ductile iron abrading-ball idiosome, wherein pouring temperature is 1370 DEG C；
S4, quenching: bainite ductile iron abrading-ball idiosome is carried out oil quenching, treat bainite ductile iron abrading-ball idiosome temperature
It is down to when 293 DEG C take out, after being then placed in the constant-temperature oven that temperature is 338 DEG C carrying out being incubated 48min, takes out
Air cooling obtains bainite ductile iron abrading-ball, and wherein the thermal medium that adds in constant-temperature oven is melted Mg (NO3)2、KNO3、
LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be 26:55:19.
Embodiment 3
A kind of bainite ductile iron abrading-ball that the present invention proposes, its component includes by weight percentage: C:4.20%,
Si:2.10%, Mn:0.75%, Mo:0.60%, Cu:0.45%, Cr:0.36%, Mg:0.06%, Al:
0.02%, Ni:0.02%, Ti:0.05%, Re:0.04%, B:0.01%, S:0.03%, P:0.04%,
Remaining is Fe and inevitable impurity；
Preparation process includes melting, nodularization, pours into a mould, quenches, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel are placed in furnace cupola
Carry out melting, furnace cupola temperature is risen to 1430 DEG C, be incubated 16min, add magnesium ingot, aluminium ingot and titanium ingot
After, temperature is risen to 1480 DEG C, is incubated 12min, after the slag floating over aluminium alloy surface is pulled out, obtains
Induction furnace residual metallic liquid is aluminium alloy A；
S2, nodularization: after adding nodulizer, inovulant and ferrosilicon in aluminium alloy A, temperature is maintained 1490 DEG C,
Insulation 5.7min obtains nodularization aluminium alloy；
S3, cast: after being poured into by nodularization aluminium alloy in mould, took when nodularization aluminium alloy temperature is down to 975 DEG C
Going out, obtain bainite ductile iron abrading-ball idiosome, wherein pouring temperature is 1360 DEG C；
S4, quenching: bainite ductile iron abrading-ball idiosome is carried out oil quenching, treat bainite ductile iron abrading-ball idiosome temperature
It is down to when 297 DEG C take out, after being then placed in the constant-temperature oven that temperature is 333 DEG C carrying out being incubated 52min, takes out
Air cooling obtains bainite ductile iron abrading-ball, and wherein the thermal medium that adds in constant-temperature oven is melted Mg (NO3)2、KNO3、
LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be 24:56:20.
Embodiment 4
A kind of bainite ductile iron abrading-ball that the present invention proposes, its component includes by weight percentage: C:4.15%,
Si:2.20%, Mn:0.70%, Mo:0.65%, Cu:0.40%, Cr:0.38%, Mg:0.05%, Al:
0.02%, Ni:0.03%, Ti:0.05%, Re:0.03%, B:0.02%, S:0.02%, P:0.05%,
Remaining is Fe and inevitable impurity；
Preparation process includes melting, nodularization, pours into a mould, quenches, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel are placed in furnace cupola
Carry out melting, furnace cupola temperature is risen to 1400 DEG C, be incubated 20min, add magnesium ingot, aluminium ingot and titanium ingot
After, temperature is risen to 1460 DEG C, is incubated 15min, after the slag floating over aluminium alloy surface is pulled out, obtains
Induction furnace residual metallic liquid is aluminium alloy A；
S2, nodularization: after adding nodulizer, inovulant and ferrosilicon in aluminium alloy A, temperature is maintained 1460 DEG C,
Insulation 7min obtains nodularization aluminium alloy；
S3, cast: after being poured into by nodularization aluminium alloy in mould, took when nodularization aluminium alloy temperature is down to 960 DEG C
Going out, obtain bainite ductile iron abrading-ball idiosome, wherein pouring temperature is 1380 DEG C；
S4, quenching: bainite ductile iron abrading-ball idiosome is carried out oil quenching, treat bainite ductile iron abrading-ball idiosome temperature
It is down to when 292 DEG C take out, after being then placed in the constant-temperature oven that temperature is 336 DEG C carrying out being incubated 47min, takes out
Air cooling obtains bainite ductile iron abrading-ball, and wherein the thermal medium that adds in constant-temperature oven is melted Mg (NO3)2、KNO3、
LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be 25:55:20.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention not office
Being limited to this, any those familiar with the art is in the technical scope that the invention discloses, according to this
The technical scheme of invention and inventive concept thereof in addition equivalent or change, all should contain the protection in the present invention
Within the scope of.
Claims (4)
1. a bainite ductile iron abrading-ball, it is characterised in that its component includes by weight percentage:
C:4.00-4.20%, Si:2.10-2.30%, Mn:0.55-0.75%, Mo:0.60-0.80%, Cu:
0.30-0.45%, Cr:0.36-0.46%, Mg:0.05-0.06%, Al:0.01-0.03%, Ni:0.02-0.08%,
Ti:0.04-0.05%, Re:0.02-0.04%, B:0.01-0.03%, S:0.01-0.03%, P:0.04-0.06%,
Remaining is Fe and inevitable impurity；
Preparation process includes melting, nodularization, pours into a mould, quenches, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel are placed in furnace cupola
Carry out melting, furnace cupola temperature is risen to 1400-1450 DEG C, be incubated 15-20min, add magnesium ingot, aluminum
After ingot and titanium ingot, temperature is risen to 1460-1500 DEG C, be incubated 10-15min, aluminium alloy surface will be floated over
After slag is pulled out, obtain induction furnace residual metallic liquid and be aluminium alloy A；
S2, nodularization: after adding nodulizer, inovulant and ferrosilicon in aluminium alloy A, temperature is maintained
1460-1500 DEG C, insulation 5-7min obtains nodularization aluminium alloy；
S3, cast: after being poured into by nodularization aluminium alloy in mould, treat that nodularization aluminium alloy temperature is down to 960-980 DEG C
Time take out, obtain bainite ductile iron abrading-ball idiosome, wherein pouring temperature is 1350-1380 DEG C；
S4, quenching: bainite ductile iron abrading-ball idiosome is carried out oil quenching, treat bainite ductile iron abrading-ball idiosome temperature
It is down to when 290-300 DEG C take out, is then placed in the constant-temperature oven that temperature is 330-340 DEG C being incubated
After 45-55min, taking out air cooling and obtain bainite ductile iron abrading-ball, wherein the thermal medium that adds in constant-temperature oven is melted
Mg (NO3)2、KNO3、LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be
24-26:54-56:19-21。
2. bainite ductile iron abrading-ball as claimed in claim 1, it is characterised in that in the S1 of preparation process,
The pig iron, steel scrap, manganese steel, molybdenum-iron, ferronickel, red copper and chromium steel are placed in furnace cupola and carry out melting, will punching
It furnace temperature rises to 1420-1430 DEG C, is incubated 16-18min, after adding magnesium ingot, aluminium ingot and titanium ingot, and will
Temperature rises to 1470-1480 DEG C, is incubated 12-13min, after the slag floating over aluminium alloy surface is pulled out,
It is aluminium alloy A to induction furnace residual metallic liquid.
3. bainite ductile iron abrading-ball as claimed in claim 2, it is characterised in that in the S3 of preparation process,
After nodularization aluminium alloy being poured in mould, take out when nodularization aluminium alloy temperature is down to 965-975 DEG C, obtain
Bainite ductile iron abrading-ball idiosome, wherein pouring temperature is 1360-1370 DEG C.
4. bainite ductile iron abrading-ball as described in any one of claim 1-3, it is characterised in that preparation process
In S4, bainite ductile iron abrading-ball idiosome is carried out oil quenching, treat that bainite ductile iron abrading-ball idiosome temperature is down to
Take out when 292-298 DEG C, be then placed in the constant-temperature oven that temperature is 334-336 DEG C carrying out being incubated 47-53min
After, take out air cooling and obtain bainite ductile iron abrading-ball, wherein the thermal medium that adds in constant-temperature oven is melted Mg (NO3)2、
KNO3、LiNO3Mixture, Mg (NO3)2、KNO3、LiNO3Weight ratio be 25:55:20.
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| CN201410364543.1A CN104073713B (en) | 2014-07-28 | 2014-07-28 | A kind of bainite ductile iron abrading-ball |
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| CN106995899A (en) * | 2017-04-21 | 2017-08-01 | 马鞍山市润启新材料科技有限公司 | A kind of spheroidal graphite cast-iron and preparation method thereof |
| CN107723582B (en) * | 2017-09-05 | 2020-01-24 | 王业双 | High-aluminum high-temperature-resistant nodular cast iron containing molybdenum and chromium elements and preparation method thereof |
| CN112091180A (en) * | 2020-08-27 | 2020-12-18 | 宁国市四方精工机械有限公司 | Manufacturing method of high-strength main steam valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641248A (en) * | 2004-12-07 | 2005-07-20 | 王义波 | Nodular cast iron piston ring |
| CN102330012A (en) * | 2011-09-02 | 2012-01-25 | 上海大学 | Niobium bainite ductile iron material and production process thereof |
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2014
- 2014-07-28 CN CN201410364543.1A patent/CN104073713B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641248A (en) * | 2004-12-07 | 2005-07-20 | 王义波 | Nodular cast iron piston ring |
| CN102330012A (en) * | 2011-09-02 | 2012-01-25 | 上海大学 | Niobium bainite ductile iron material and production process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 贝氏体球墨铸铁磨球材料的研制和生产;魏德强;《湘潭师范学院学报自然科学版》;20050331;第27卷(第1期);第94页第22行至第96页第6行，表1和图1 * |
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