CN107312968A - High-strength carborundum steel ball and preparation method thereof - Google Patents
High-strength carborundum steel ball and preparation method thereof Download PDFInfo
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- CN107312968A CN107312968A CN201710577716.1A CN201710577716A CN107312968A CN 107312968 A CN107312968 A CN 107312968A CN 201710577716 A CN201710577716 A CN 201710577716A CN 107312968 A CN107312968 A CN 107312968A
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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
- C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/32—Balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/02—Mechanical properties
- F16C2202/04—Hardness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/02—Mechanical properties
- F16C2202/06—Strength or rigidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/60—Ferrous alloys, e.g. steel alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a kind of high-strength carborundum steel ball and preparation method thereof, the preparation method includes：By spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, strontium oxide strontia and ferromanganese according to 100：10‑19：0.5‑3.5：1.1‑2.9：0.15‑0.55：0.55‑0.95：1.1‑1.5：0.11‑0.16：1.25 4.65 weight after mixing than carrying out melting；It is subsequently added into refining agent refine obtaining molten hot metal, molten hot metal and then is carried out into cast molding is made type embryo；Most rear profile embryo is heat-treated again is made the high-strength carborundum steel ball；The high-strength carborundum steel ball has the excellent mechanical performances such as High anti bending strength, Rockwell hardness height and compression strength height；Have and service life is long, running accuracy is high.
Description
Technical field
The present invention relates to auto parts and components field, in particular it relates to a kind of high-strength carborundum steel ball and preparation method thereof.
Background technology
Bearing（Bearing）It is a kind of important spare part in contemporary plant equipment.Its major function is support machinery rotation
Swivel, reduces the coefficient of friction in its motion process（friction coefficient）, and ensure its rotating accuracy.And bearing
The intensity and its durability of steel ball directly affects the accuracy of bearing revolution.
During the use of machine, bearing is in the working condition of continuous high intensity, and the intensity of bearing and its steel ball
Quality etc. mechanical performance can directly affect machine normal operation.
The content of the invention
It is an object of the invention to provide a kind of high-strength carborundum steel ball and preparation method thereof, the high-strength carborundum steel ball
With excellent mechanical performances such as High anti bending strength, Rockwell hardness height and compression strength height；Have and service life is long, operating is accurate
Degree is high.
To achieve these goals, the invention provides a kind of preparation method of high-strength carborundum steel ball, the preparation
Method includes：
Melted after spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, strontium oxide strontia and ferromanganese are mixed
Refining；It is subsequently added into refining agent refine obtaining molten hot metal, molten hot metal and then is carried out into cast molding is made type embryo；Most
Rear profile embryo is heat-treated again is made the high-strength carborundum steel ball；
Wherein, in parts by weight, the spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, oxidation
The amount ratio of strontium and ferromanganese is 100：10-19：0.5-3.5：1.1-2.9：0.15-0.55：0.55-0.95：1.1-1.5：0.11-
0.16：1.25-4.65.
By above-mentioned technical proposal, by spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, titanium dioxide in the present invention
After progress melting is mixed according to specific ratio after silicon, nickel, strontium oxide strontia and ferromanganese mixing, melting, refining agent are carried out successively
Steel ball is finally made in heat treatment；High-strength carborundum steel ball has High anti bending strength, Rockwell hardness high and anti-made from this method
The excellent mechanical performance such as Compressive Strength height；Have and service life is long, running accuracy is high.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Embodiment
The embodiment to the present invention is described in detail below.It should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The end points and any value of disclosed scope are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The invention provides a kind of preparation method of high-strength carborundum steel ball, the preparation method includes：
Melted after spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, strontium oxide strontia and ferromanganese are mixed
Refining；It is subsequently added into refining agent refine obtaining molten hot metal, molten hot metal and then is carried out into cast molding is made type embryo；Most
Rear profile embryo is heat-treated again is made the high-strength carborundum steel ball；
Wherein, in parts by weight, the spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, oxidation
The amount ratio of strontium and ferromanganese is 100：10-19：0.5-3.5：1.1-2.9：0.15-0.55：0.55-0.95：1.1-1.5：0.11-
0.16：1.25-4.65.
In the present invention, the content of carbon can be in wide scope control, but in order to further improve in used ferromanganese
The intensity of obtained steel ball, it is preferable that the content of carbon is 0.6%-1.2% in the ferromanganese.
In the present invention, the actual conditions of used refining can be selected in wide scope, but in order to improve refining
Effect and then the intensity for improving obtained steel ball, it is preferable that the refining process is：Refining agent is added, is entered at 1400-1500 DEG C
Row is refined for the first time, and the time is 2-3h；Then it is warming up to 1700-2000 DEG C with 50-60 DEG C/h and carries out second and refine, the time is
2-4h。
In the present invention, the species of used refining agent can be selected in wide scope, but in order to further improve system
The intensity of the steel ball obtained, it is preferable that the refining agent is prepared by following methods：By the clay, rhenium, cerium oxide, carbon
The silane coupler of fiber, silicon barium and trade mark KH570 is mixed, heats melting, and being broken into particle after finally cooling, drying puts down
The refining agent that equal particle diameter is 10-15mm.
In addition, in the preparation process of refining agent, the specific consumption of each raw material can adjust control in wide scope, but
It is to improve the using effect of obtained refining agent, it is preferable that the clay, rhenium, cerium oxide, carbon fiber, silicon barium and the trade mark
The weight ratio of KH570 silane coupler is 100：0.05-0.15：0.5-1.6：1.5-2.5：0.15-0.28：0.35-0.55.
In the preparation process of above-mentioned refining agent, the condition of the heating melting can be selected in wide scope, still
In order to improve melting effect, it is preferable that the condition of heating melting is：Temperature is 500-600 DEG C, and the time is 5-8h.
In the preparation process of above-mentioned refining agent, the condition of the cooling can be selected in wide scope, but in order to
Improve the effect of cooling, it is preferable that the condition of the cooling is：Temperature is 50-60 DEG C, and the time is 2-3h；Meanwhile, the drying
Condition can also be selected in wide scope, but in order to improve preparation efficiency, it is further preferred that the condition of the drying
For：Temperature is 50-70 DEG C, and the time is 10-12h.
In the present invention, the condition of the melting can be controlled in wider scope, but in order to improve the effect of melting,
Preferably, the temperature of the melting is 1550-1650 DEG C, and the time of melting is 3-4h.
The actual conditions of heat treatment can be adjusted in wide scope, but in order to improve effect and then the raising of heat treatment
The intensity of obtained steel ball, it is preferable that the type embryo is first incubated 3-4h at 800-900 DEG C, then with 40-50 DEG C/h speed
400-500 DEG C of insulation 5-6h is cooled to, the direct water-cooling most after insulation is made the high-strength carborundum steel ball；
It is further preferred that before the heat treatment, the temperature of the type embryo is 700-900 DEG C.
Present invention also offers high-strength carborundum steel ball made from a kind of above-mentioned preparation method.
The present invention will be described in detail by way of examples below.
Embodiment 1
By spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, strontium oxide strontia and ferromanganese（Carbon content is
0.6%%）According to 100：10：0.5：1.1：0.15：0.55：1.1：0.11：After 1.25 weight is than mixing, in 1550 melting 4h；
Refining agent is subsequently added into, refining 3h is carried out at 1400 DEG C, then 1700 DEG C of refining 4h are warming up to molten hot metal with 50 DEG C/h；Immediately
And molten hot metal is subjected to the obtained type embryo of cast molding；Finally first by described 700 DEG C of type embryo 800 DEG C be incubated 4h, then with
40 DEG C/h speed is cooled to 400 DEG C of insulation 6h, and the direct water-cooling most after insulation is made the high-strength carborundum steel ball；
It is denoted as A1.
Wherein, used refining agent is made by following methods：By clay, rhenium, cerium oxide, carbon fiber, silicon barium winning
Number KH570 silane coupler is according to 100：0.05：0.5：1.5：0.15：0.35 weight is than mixing, in 500 DEG C of heating meltings
5h, finally cools down 2h at 50 DEG C, and the refining agent for being broken into that mean particle size is 10mm after 12h is dried at 50 DEG C.
Embodiment 2
By spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, strontium oxide strontia and ferromanganese（Carbon content is
0.9%）According to 100：15：0.25：2.0：0.45：0.85：1.2：0.15：After 3.65 weight is than mixing, in 1600 meltings
3.5h；Refining agent is subsequently added into, refining 3h is carried out at 1450 DEG C, then 1800 DEG C of refining 3h are warming up to molten iron with 55 DEG C/h
Water；And then molten hot metal is subjected to cast molding and type embryo is made；Described 800 DEG C of type embryo is first finally incubated 4h at 800 DEG C,
Then 450 DEG C of insulation 5.5h are cooled to 50 DEG C/h speed, the direct water-cooling most after insulation is made the high strength carbonizing
Silicon steel ball；It is denoted as A2.
Wherein, used refining agent is made by following methods：By clay, rhenium, cerium oxide, carbon fiber, silicon barium winning
Number KH570 silane coupler is mixed according to 100：0.11：1.2：2.0：0.21：0.45 weight is than mixing, at 550 DEG C
Heating melting 6h, finally cools down 3h, and be broken into mean particle size after dry 11h for described in 13mm at 60 DEG C at 55 DEG C
Refining agent.
Embodiment 3
By spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, strontium oxide strontia and ferromanganese（Carbon content is
1.2%）According to 100：19：3.5：2.9：0.55：0.95：1.5：0.16：After 4.65 weight is than mixing, in 1650 melting 3h；Connect
Addition refining agent, refining 2h is carried out at 1500 DEG C, then 2000 DEG C of refining 2h are warming up to molten hot metal with 60 DEG C/h；And then
Molten hot metal is subjected to cast molding type embryo is made；Described 900 DEG C of type embryo is first finally incubated 3h at 900 DEG C, then with 50
DEG C/h speed is cooled to 500 DEG C of insulation 5h, the direct water-cooling most after insulation is made the high-strength carborundum steel ball；Note
Make A3.
Wherein, used refining agent is made by following methods：By clay, rhenium, cerium oxide, carbon fiber, silicon barium winning
Number KH570 silane coupler is according to 100：0.15：1.6：2.5：0.28：0.55 weight is than mixing, in 600 DEG C of heating meltings
8h, finally cools down 3h at 60 DEG C, and the refining agent for being broken into that mean particle size is 15mm after 12h is dried at 70 DEG C.
Comparative example 1
High-strength carborundum steel ball is prepared Following the procedure of Example 1, B1 is denoted as；Unlike, titanium dioxide is not added in raw material
Silicon.
Comparative example 2
High-strength carborundum steel ball is prepared Following the procedure of Example 1, B2 is denoted as；Unlike, carborundum is not added in raw material.
Comparative example 3
High-strength carborundum steel ball is prepared Following the procedure of Example 1, B3 is denoted as；Unlike, boron nitride is not added in raw material.
Comparative example 4
High-strength carborundum steel ball is prepared Following the procedure of Example 1, B4 is denoted as；Unlike, strontium oxide strontia is not added in raw material.
Comparative example 5
High-strength carborundum steel ball is prepared Following the procedure of Example 1, B5 is denoted as；Unlike, melting adds refining after terminating
Agent directly refines 7h at 1400 DEG C and obtains molten hot metal.
Comparative example 6
High-strength carborundum steel ball is prepared Following the procedure of Example 1, B6 is denoted as；Unlike, melting adds refining after terminating
Agent directly refines 7h at 1700 DEG C and obtains molten hot metal.
Comparative example 7
High-strength carborundum steel ball is prepared Following the procedure of Example 1, B7 is denoted as；Unlike, 2 are not in the refining agent raw material
Add cerium oxide.
Detect example 1
It is strong to embodiment A1-A3 and comparative example B1-B7 Rockwell hardness HRA, anti-folding according to JB/T-1225-2014 examination criterias
Degree（MPa）And compression strength（MPa）Tested etc. mechanical performance, concrete outcome is shown in Table 1.
Table 1
| Rockwell hardness HRA | Rupture strength/MPa | Compression strength/MPa | |
| A1 | 91.8 | 451 | 2150 |
| A2 | 90.7 | 450 | 2020 |
| A3 | 91.3 | 442 | 1980 |
| B1 | 84.1 | 398 | 1850 |
| B2 | 84.5 | 386 | 1890 |
| B3 | 83.5 | 401 | 1855 |
| B4 | 85.1 | 401 | 1852 |
| B5 | 75.7 | 350 | 1750 |
| B6 | 73.8 | 347 | 1730 |
| B7 | 83.6 | 356 | 1760 |
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited to the tool in above-mentioned embodiment
Body details, in the range of the technology design of the present invention, can carry out a variety of simple variants, these letters to technical scheme
Monotropic type belongs to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of preparation method of high-strength carborundum steel ball, it is characterised in that the preparation method includes：
Melted after spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, strontium oxide strontia and ferromanganese are mixed
Refining；It is subsequently added into refining agent refine obtaining molten hot metal, molten hot metal and then is carried out into cast molding is made type embryo；Most
Rear profile embryo is heat-treated again is made the high-strength carborundum steel ball；
Wherein, in parts by weight, the spheroidal graphite cast-iron, steel scrap, titanium oxide, carborundum, boron nitride, silica, nickel, oxidation
The amount ratio of strontium and ferromanganese is 100：10-19：0.5-3.5：1.1-2.9：0.15-0.55：0.55-0.95：1.1-1.5：0.11-
0.16：1.25-4.65.
2. preparation method according to claim 1, wherein, the content of carbon is 0.6%-1.2% in the ferromanganese.
3. preparation method according to claim 1, wherein, the refining process is：Refining agent is added, in 1400-1500
DEG C carry out first time refining, the time is 2-3h；Then it is warming up to 1700-2000 DEG C with 50-60 DEG C/h and carries out second of refining, when
Between be 2-4h.
4. preparation method according to claim 1, wherein, the refining agent is prepared by following methods：By clay,
Rhenium, cerium oxide, carbon fiber, silicon barium and the trade mark KH570 silane coupler are mixed, heat melting, after finally cooling down, drying
It is broken into the refining agent that mean particle size is 10-15mm.
5. preparation method according to claim 4, wherein, the clay, rhenium, cerium oxide, carbon fiber, silicon barium and the trade mark
The weight ratio of KH570 silane coupler is 100：0.05-0.15：0.5-1.6：1.5-2.5：0.15-0.28：0.35-0.55.
6. preparation method according to claim 4, wherein, the condition of the heating melting is：Temperature is 500-600 DEG C,
Time is 5-8h.
7. preparation method according to claim 4, wherein, the condition of the cooling is：Temperature is 50-60 DEG C, and the time is
2-3h；
Preferably, the condition of the drying is：Temperature is 50-70 DEG C, and the time is 10-12h.
8. preparation method according to claim 1, wherein, the temperature of the melting is 1550-1650 DEG C, the time of melting
For 3-4h.
9. preparation method according to claim 8, wherein, the condition of the heat treatment is：First by the type embryo in 800-
900 DEG C of insulation 3-4h, are then cooled to 400-500 DEG C of insulation 5-6h, the direct water most after insulation with 40-50 DEG C/h speed
It is cold, that is, the high-strength carborundum steel ball is made；
Preferably, before the heat treatment, the temperature of the type embryo is 700-900 DEG C.
10. high-strength carborundum steel ball made from the preparation method in a kind of 1-9 such as claim as described in any one.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331904A (en) * | 2015-11-05 | 2016-02-17 | 宁国市南方耐磨材料有限公司 | Preparation method of high-manganese low-chromium alloy wear-resisting ball |
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2017
- 2017-07-15 CN CN201710577716.1A patent/CN107312968A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331904A (en) * | 2015-11-05 | 2016-02-17 | 宁国市南方耐磨材料有限公司 | Preparation method of high-manganese low-chromium alloy wear-resisting ball |
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Application publication date: 20171103 |
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