CN104178696A - Graphite spheroidizing wear-resistant ball - Google Patents
Graphite spheroidizing wear-resistant ball Download PDFInfo
- Publication number
- CN104178696A CN104178696A CN201410364607.8A CN201410364607A CN104178696A CN 104178696 A CN104178696 A CN 104178696A CN 201410364607 A CN201410364607 A CN 201410364607A CN 104178696 A CN104178696 A CN 104178696A
- Authority
- CN
- China
- Prior art keywords
- wear
- temperature
- resistant ball
- percent
- aluminium alloy
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses a graphite spheroidizing wear-resistant ball. The graphite spheroidizing wear-resistant ball comprises, by weight, 4.00 percent to 4.20 percent of C, 2.10 percent to 2.50 percent of Si, 0.55 percent to 0.75 percent of Mn, 0.60 percent to 0.80 percent of Mo, 0.30 percent to 0.45 percent of Cu, 0.36 percent to 0.46 percent of Cr, 0.03 percent to 0.06 percent of Mg, 0.01 percent to 0.03 percent of Al, 0.04 percent to 0.05 percent of Ti, 0.02 percent to 0.04 percent of Zr, 0.02 percent to 0.04 percent of Re, 0.01 percent to 0.03 percent of S, 0.04 percent to 0.06 percent of P, the balance Fe and unavoidable impurities. The graphite spheroidizing wear-resistant ball is good in wear-resisting performance, the hardness can reach 56 HRC to 62 HRC, the impact toughness can reach 14 J/cm<2> to 15 J/cm<2>, the ball can resist corrosion, and in the actual use process, the graphite spheroidizing wear-resistant ball can meet the requirement.
Description
Technical field
The present invention relates to spheroidization of graphite wear-resistant ball technical field, relate in particular to a kind of spheroidization of graphite wear-resistant ball.
Background technology
Ball mill is one of widely used Super-fine grinder machinery in industrial production.Ball mill steel ball is ball mill equipment grinding material medium, produces ablation, thereby the particle diameter of material is further reduced by the collision friction between ball mill steel ball, between steel ball and material.In prior art, mill Jie steel ball of ball mill is mainly ball milling steel casting or the nodular cast iron parts such as chromium alloy, Mn series alloy, as high chromium steel ball, low-chrome steel ball, multicomponent alloy steel ball and vanadium-titanium-chromium alloy steel ball etc., its target mostly is cement, coal, ore, cinder etc.Coal pulverizer steel ball in use hardness and the wear resistance of ball is one of principal element affecting coal pulverizer shaping effect.In order to improve the durability of crushing efficiency and steel ball, need steel ball surface to have enough hardness and fastness to rubbing.Meanwhile, in process of lapping, the collision occurring between steel ball and abrasive material, steel ball and liner plate and steel ball and steel ball is inevitable, therefore, also requires steel ball to have certain toughness, avoids brokenly ball, and this just proposes higher requirement to the composition of steel ball.
Summary of the invention
The technical problem that basic background technology exists, the present invention proposes a kind of spheroidization of graphite wear-resistant ball, and wear resisting property is good, and hardness can reach 56-62HRC, and impelling strength can reach 14-15J/cm
2, also withstand corrosion, meets the requirement to spheroidization of graphite wear-resistant ball in actual use procedure.
A kind of spheroidization of graphite wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: 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%, Ti:0.04-0.05%, Zr:0.02-0.04%, Re:0.02-0.04%, S:0.01-0.03%, P:0.04-0.06%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1400-1450 ℃, insulation 15-20min, add again after magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot, temperature is risen to 1460-1500 ℃, insulation 10-15min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1460-1500 ℃, insulation 5-7min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 960-980 ℃, take out, obtain wear-resistant ball idiosome, wherein teeming temperature is 1350-1380 ℃;
S4, quenching: wear-resistant ball idiosome is carried out to oil quenching, when being down to 290-300 ℃, wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 330-340 ℃ is incubated after 45-55min, takes out air cooling and obtains spheroidization of graphite wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 54-56:24-26:19-21.
Preferably, the weight ratio of Mn, Mo, Cu, Cr is 0.65:0.70:0.40:0.42.
Preferably, in the S4 of preparation process, wear-resistant ball idiosome is carried out to oil quenching, when being down to 297 ℃, wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 333 ℃ is incubated after 42min, take out air cooling and obtain spheroidization of graphite wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 55:25:20.
When producing various iron or iron alloy by iron ore, due in iron ore often association have metal or the nonmetalliferous ores such as phosphorus, sulphur, cause the impurity that contains the elements such as phosphorus, sulphur and be difficult to avoid in final iron or iron alloy.
The present invention adopts the pig iron, steel scrap, manganese steel, molybdenum-iron, red copper and chromium steel to coordinate the major ingredient as aluminium alloy A, realize the present invention's high and high requirement of impelling strength for spheroidization of graphite wear-resistant ball density, improve in use grinding efficiency of spheroidization of graphite wear-resistant ball, strengthen the wearing quality of spheroidization of graphite wear-resistant ball; Add again magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot to cooperatively interact, alloy liquid A carries out deoxidation denitrogenation, the content of oxide compound and nitride in minimizing aluminium alloy A, further improve spheroidization of graphite wear-resistant ball work-ing life, and magnesium, aluminium, zirconium and four kinds of elements of titanium corrosion resistant ability of residual raising spheroidization of graphite wear-resistant ball in spheroidization of graphite wear-resistant ball; Add nodulizing agent, nucleating agent and ferrosilicon, make to form ball graphite in spheroidization of graphite wear-resistant ball, avoid or reduce spheroidization of graphite wear-resistant ball situation about ftractureing occurs; Quenching process is casting waste heat progressive austempering, first adopt the mode of oil quenching, make the temperature fast-descending of wear-resistant ball idiosome, avoid upper bainite and form district, then by the mode of isothermal quenching, make wear-resistant ball idiosome carry out lower bainite isothermal transformation, can significantly reduce alloy addition, greatly saved production cost, compared with independent isothermal quenching technique, technique is easier; The KNO that in quenching process, the heating medium of constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 54-56:24-26:19-21, significantly improved the heat extraction coefficient of constant-temperature oven, make the austenite in spheroidization of graphite wear-resistant ball be converted to lower bainite, increase substantially the toughness of ball-type alloy substrate.After testing, the hardness of spheroidization of graphite wear-resistant ball reaches 57-62HRC, and toughness has also reached 15-16J/cm
2, meet industrial production required.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is elaborated.
Embodiment 1
A kind of spheroidization of graphite wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.10%, Si:2.30%, Mn:0.65%, Mo:0.70%, Cu:0.40%, Cr:0.42%, Mg:0.04%, Al:0.02%, Ti:0.045%, Zr:0.03%, Re:0.03%, S:0.02%, P:0.05%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1450 ℃, insulation 15min, add again after magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot, temperature is risen to 1500 ℃, insulation 10min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1500 ℃, insulation 5min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 980 ℃, take out, obtain wear-resistant ball idiosome, wherein teeming temperature is 1350 ℃;
S4, quenching: wear-resistant ball idiosome is carried out to oil quenching, when being down to 300 ℃, wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 330 ℃ is incubated after 55min, takes out air cooling and obtains spheroidization of graphite wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 54:25:21.
Embodiment 2
A kind of spheroidization of graphite wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.00%, Si:2.50%, Mn:0.55%, Mo:0.80%, Cu:0.30%, Cr:0.46%, Mg:0.03%, Al:0.03%, Ti:0.04%, Zr:0.04%, Re:0.02%, S:0.03%, P:0.04%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1400 ℃, insulation 20min, add again after magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot, temperature is risen to 1460 ℃, insulation 15min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1460 ℃, insulation 7min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 960 ℃, take out, obtain wear-resistant ball idiosome, wherein teeming temperature is 1380 ℃;
S4, quenching: wear-resistant ball idiosome is carried out to oil quenching, when being down to 297 ℃, wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 333 ℃ is incubated after 42min, takes out air cooling and obtains spheroidization of graphite wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 55:25:20.
Embodiment 3
A kind of spheroidization of graphite wear-resistant ball that the present invention proposes, its compositions in weight percentage comprises: C:4.20%, Si:2.10%, Mn:0.75%, Mo:0.60%, Cu:0.45%, Cr:0.36%, Mg:0.06%, Al:0.01%, Ti:0.05%, Zr:0.02%, Re:0.04%, S:0.01%, P:0.06%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1430 ℃, insulation 17min, add again after magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot, temperature is risen to 1480 ℃, insulation 12min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1480 ℃, insulation 6min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 970 ℃, take out, obtain wear-resistant ball idiosome, wherein teeming temperature is 1360 ℃;
S4, quenching: wear-resistant ball idiosome is carried out to oil quenching, when being down to 290 ℃, wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 340 ℃ is incubated after 45min, takes out air cooling and obtains spheroidization of graphite wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 56:25:19.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (3)
1. a spheroidization of graphite wear-resistant ball, is characterized in that, its compositions in weight percentage comprises:
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%, Ti:0.04-0.05%, Zr:0.02-0.04%, Re:0.02-0.04%, S:0.01-0.03%, P:0.04-0.06%, all the other are Fe and inevitable impurity;
Preparation process comprises melting, nodularization, cast, quenching, and step is as follows:
S1, melting: the pig iron, steel scrap, manganese steel, molybdenum-iron, red copper and chromium steel are placed in to cupola furnace and carry out melting, cupola furnace temperature is risen to 1400-1450 ℃, insulation 15-20min, add again after magnesium ingot, aluminium ingot, zirconium ingot and titanium ingot, temperature is risen to 1460-1500 ℃, insulation 10-15min, after the slag that floats over aluminium alloy surface is pulled out, obtains induction furnace residual metallic liquid and is aluminium alloy A;
S2, nodularization: in aluminium alloy A, add after nodulizing agent, nucleating agent and ferrosilicon, temperature is maintained to 1460-1500 ℃, insulation 5-7min obtains nodularization aluminium alloy;
S3, cast: after nodularization aluminium alloy is poured in mould, when nodularization aluminium alloy temperature is down to 960-980 ℃, take out, obtain wear-resistant ball idiosome, wherein teeming temperature is 1350-1380 ℃;
S4, quenching: wear-resistant ball idiosome is carried out to oil quenching, when being down to 290-300 ℃, wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 330-340 ℃ is incubated after 45-55min, takes out air cooling and obtains spheroidization of graphite wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 54-56:24-26:19-21.
2. spheroidization of graphite wear-resistant ball as claimed in claim 1, is characterized in that, the weight ratio of Mn, Mo, Cu, Cr is 0.65:0.70:0.40:0.42.
3. spheroidization of graphite wear-resistant ball as claimed in claim 1, it is characterized in that, in the S4 of preparation process, wear-resistant ball idiosome is carried out to oil quenching, when being down to 297 ℃, wear-resistant ball idiosome temperature takes out, then the constant-temperature oven of putting into temperature and be 333 ℃ is incubated after 42min, takes out air cooling and obtains spheroidization of graphite wear-resistant ball, the KNO that wherein heating medium in constant-temperature oven is melting
3, NaNO
3, LiNO
3mixture, KNO
3, NaNO
3, LiNO
3weight ratio be 55:25:20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364607.8A CN104178696A (en) | 2014-07-28 | 2014-07-28 | Graphite spheroidizing wear-resistant ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410364607.8A CN104178696A (en) | 2014-07-28 | 2014-07-28 | Graphite spheroidizing wear-resistant ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104178696A true CN104178696A (en) | 2014-12-03 |
Family
ID=51960035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410364607.8A Pending CN104178696A (en) | 2014-07-28 | 2014-07-28 | Graphite spheroidizing wear-resistant ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104178696A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331875A (en) * | 2015-11-05 | 2016-02-17 | 宁国市南方耐磨材料有限公司 | Nano-modified wear-resisting alloy ball and preparation method thereof |
| CN106282753A (en) * | 2016-08-25 | 2017-01-04 | 宁国东方碾磨材料股份有限公司 | A kind of high-carbon low-chromium super abrasive spheroidal graphite cast ball and preparation method thereof |
| CN108998639A (en) * | 2018-08-28 | 2018-12-14 | 宁国慧宏耐磨材料有限公司 | A kind of energy-saving grinding ball and preparation method thereof |
| CN109609731A (en) * | 2018-12-21 | 2019-04-12 | 宁国市华丰耐磨材料有限公司 | A kind of high chromium mill forging same temperature hardening heat treatment process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055562A (en) * | 1990-04-09 | 1991-10-23 | 国营江山机械厂 | Antifriction cast iron |
| CN101778959A (en) * | 2007-06-26 | 2010-07-14 | 国立大学法人岩手大学 | Flake graphite cast iron and manufacture method thereof |
-
2014
- 2014-07-28 CN CN201410364607.8A patent/CN104178696A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055562A (en) * | 1990-04-09 | 1991-10-23 | 国营江山机械厂 | Antifriction cast iron |
| CN101778959A (en) * | 2007-06-26 | 2010-07-14 | 国立大学法人岩手大学 | Flake graphite cast iron and manufacture method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 魏德强: ""贝氏体球墨铸铁磨球材料的研制和生产"", 《湘潭师范学院学报（自然科学版）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331875A (en) * | 2015-11-05 | 2016-02-17 | 宁国市南方耐磨材料有限公司 | Nano-modified wear-resisting alloy ball and preparation method thereof |
| CN106282753A (en) * | 2016-08-25 | 2017-01-04 | 宁国东方碾磨材料股份有限公司 | A kind of high-carbon low-chromium super abrasive spheroidal graphite cast ball and preparation method thereof |
| CN108998639A (en) * | 2018-08-28 | 2018-12-14 | 宁国慧宏耐磨材料有限公司 | A kind of energy-saving grinding ball and preparation method thereof |
| CN109609731A (en) * | 2018-12-21 | 2019-04-12 | 宁国市华丰耐磨材料有限公司 | A kind of high chromium mill forging same temperature hardening heat treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102534398B (en) | Ferroboron-containing alloy wear-resistant material and preparation method thereof | |
| CN101660097B (en) | Wear-resisting alloy steel with high boron, high chrome and low carbon and preparation method thereof | |
| CN100453681C (en) | High boron wear-resisting casting steel and preparation process thereof | |
| CN102383066B (en) | Abrasion resistant cast steel and preparation method thereof | |
| CN103498107A (en) | High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof | |
| CN101956140B (en) | Lining plate for large ball mill and casting method thereof | |
| CN103757516A (en) | Wear-resisting white cast iron and preparation method thereof | |
| CN103572166A (en) | Boracic high-speed steel with good red hardness and preparation method thereof | |
| CN103060662B (en) | A kind of preparation technology of cast alloy iron abrading-ball | |
| CN104328334A (en) | High wear resistance high chromium cast iron used for bimetallic composite tube and preparation method thereof | |
| CN104087822A (en) | Grinding body for high-performance ball mill | |
| CN103436810A (en) | Production process for steel casting of martensitic wear-resistant steel | |
| CN104178696A (en) | Graphite spheroidizing wear-resistant ball | |
| CN105385949A (en) | Boracic wear-resisting alloy steel and preparation method thereof | |
| CN105316589A (en) | High-tenacity boron-containing high-chromium abrasion-resistant alloy and preparation method thereof | |
| CN104087821B (en) | A kind of high-toughness wear-resistant ball | |
| CN105886881B (en) | A kind of multicomponent microalloying chromium manganese wear-resisting alloy steel sand suction pipe and preparation method thereof | |
| CN104911494A (en) | Boron-contained wear-resisting steel casting material and preparation method thereof | |
| CN104073713A (en) | Bainite ductile iron grinding ball | |
| CN103966498A (en) | High-chromium white abrasion-resistant cast iron abrasion-resistant material and production method thereof | |
| CN101280382A (en) | Globe mill austenitic-bainitic nodular cast iron grinding ball and manufacturing method thereof | |
| CN105316588A (en) | Polybasic abrasion-resistant high-boron alloy steel and preparation method thereof | |
| CN102383041A (en) | High wear resistant ultra-high carbon steel and preparation method for same | |
| CN106801189A (en) | Abrasion-proof steel ball high of a kind of anti-failure ability strong fatigue life and preparation method thereof | |
| CN104651731B (en) | A kind of large-size ball mill liner plate and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |