CN104651596A - Heat treatment technology for steel ball used for strong toughness and impact-resistant bearing - Google Patents
Heat treatment technology for steel ball used for strong toughness and impact-resistant bearing Download PDFInfo
- Publication number
- CN104651596A CN104651596A CN201310579529.9A CN201310579529A CN104651596A CN 104651596 A CN104651596 A CN 104651596A CN 201310579529 A CN201310579529 A CN 201310579529A CN 104651596 A CN104651596 A CN 104651596A
- Authority
- CN
- China
- Prior art keywords
- steel ball
- heat treatment
- quenching
- workpiece
- furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a heat treatment technology for steel ball used for strong toughness and impact-resistant bearing. A heat treatment technology process of a material for steel ball machining comprises the following steps: 1)normalising processing: heating the material in a furnace to 860-880 DEG C, insulating for 30-40 minutes, then cooling the material in oil until the surface temperature is 300-400 DEG C, taking the material out and cooling in air; and 2)annealing processing: heating the material in the furnace to 730-740 DEG C, insulating for 4-5 hours, and cooling in the furnace. A heat treatment of the semi-finished product and quenching/tempering technology comprises the following steps: 1)quenching processing: heating a workpiece in the furnace to 870-880 DEG C, insulating for 25-35 minutes, then rapidly quenching the workpiece in quenching oil at 60-80 DEG C; and 2)tempering processing: heating the workpiece in the furnace to 220-240 DEG C, and insulating for 4-5 hours. According to the invention, optimum strength and toughness cooperation can be obtained for the steel ball, steel ball life is effectively increased, and usage life of the bearing for petroleum positive displacement motors.
Description
Technical field
The present invention relates to the heat treatment technics of a kind of obdurability, shock resistance steel bearing balls.Belong to technical field of metal material heat treatment.
Background technology
Along with the high speed development of China Petroleum, as the life-span length of the well dynamic helicoid hydraulic motor of exploitation exploration oil-gas field, directly have influence on tempo of development and the economic benefit of oil-gas field, and the positive displacement drill bearing life-span is the determinative determining the helicoid hydraulic motor life-span.The situation of drilling tool is used according to petroleum industry, by to a large amount of drilling tool dissection and analysis: there is the drilling tool of 70% ~ 80% to be all scrap because of bearing damage, and wherein the overwhelming majority is because the rolling body (steel ball) of bearing is because being not suitable with the poor working conditions of drilling tool, easily the cracked bearing operation that causes is bad, thus directly has influence on the life-span of oil drilling tools bearing.By inquiry: the working conditions of kind of bearings is extremely severe, except bearing very large static load (the pressure of the drill from high), shock load, also to work under the condition of unlubricated or mud lubrication, therefore bearing steel ball will have the feature of high-impact, and this just requires that steel ball has higher resistance to crusing loading capacity.Current employing GCr15 and G55SiMoV material manufacture notch ductile steel bearing balls, its heat treating method is that conventional annealing is (when 760 ~ 780 DEG C, insulation 4 ~ 5h) and tempering of quenching (830 ~ 850 DEG C of quenchings, 220 ~ 260 DEG C of tempering) technique, acquisition hardness is 55 ~ 59HRC, and metallographic microstructure is by cryptocrystal or fine crystalline martensite and residual austenite and carbide form on a small quantity.This processing method advantage to make steel ball have higher hardness, intensity, and the compressive failure load of steel ball reaches current standards requirement; Shortcoming is that the obdurability of steel ball is not high, cannot adapt to geological state complicated and changeable in actual use, because its shock resistance crush capable is on the low side, causes steel ball breakage, collapses block, cause bearing premature failure and destroy.Thus, people urgently expect that the heat treatment technics having a kind of obdurability, shock resistance steel bearing balls is come out.
Summary of the invention
The object of this invention is to provide the heat treatment technics of a kind of obdurability, shock resistance steel bearing balls, steel ball can be made to obtain best combination of strength and toughness, effectively improve the steel ball life-span.
Technical scheme of the present invention is: described a kind of obdurability, the heat treatment technics of shock resistance steel bearing balls are as follows:
1. material require thermal treatment before steel bearing balls mechanical workout, its technological process:
(1) normalizing treatment: material is heated to temperature in stove when being 860 ~ 880 DEG C, insulation 30 ~ 40min; Then, when material to be cooled in oil surface temperature be 300 ~ 400 DEG C, take out material and cool in atmosphere;
(2) anneal: material is heated to temperature in stove when being 730 ~ 740 DEG C, insulation 4 ~ 5h, with stove cooling down:
2. work in-process thermal treatment after steel bearing balls mechanical workout, tempering process code of quenching:
(1) quench treatment: workpiece is heated to temperature in stove when being 870 ~ 880 DEG C, insulation 25 ~ 35min, then by the rapid quenching oil quenching of workpiece at 60 ~ 80 DEG C;
(2) temper: workpiece is heated to temperature in stove when being 220 ~ 240 DEG C, insulation 4 ~ 5h.
The present invention can be and manufactures obdurability, shock resistance steel bearing balls provides a kind of new variety material-G50SiMoA, its principal element is C, Si, Mo etc., wherein carbon content is (0.45 ~ 0.55) %, higher hardness and intensity can be obtained after thermal treatment, obtain again best combination of strength and toughness; Mo is carbide, can increase the hardening capacity of steel, crystal grain thinning, obtains optimum tenacity, increases wear resistance; Si element mainly plays solution strengthening effect, improves the anti-temper resistance of steel, elastic limit and impact resistance.The present invention is in heat treatment technics, and shock-resistant bearing steel ball material can obtain the spherodized structure of fine uniform after adopting normalizing to add the technique of annealing, hardness is suitably 179 ~ 245HB; Steel ball can obtain dislocation lath martensite and mix with crystallization martensite and on a small quantity residual austenite and carbide tissue after adopting quenching to add the technique of tempering, hardness is 57 ~ 60HRC, has high obdurability, wear resistance.By grain refining of the present invention, the heat treatment technics changing martensitic stucture form, steel ball is made to obtain best combination of strength and toughness, make compressive failure load comparatively current standards requirement raising more than the 50% effectively raising steel ball life-span of steel ball, thus improve the work-ing life of oil positive displacement drill bearing.
Embodiment
The present invention is further described by the following embodiment.
Its chemical constitution of bearing steel ball material of the present invention is (weight percentage): C:0. 45 ~ 0.55, Si:0. 85 ~ 1.05, Mn:0. 30 ~ 0.60, Mo:0. 35 ~ 0.55, P=0.025, S=0.025, Cr=0.02, V=0.10, Ni=0.30, Cu=0.25, all the other are Fe and inevitable impurity.
1. material require thermal treatment before steel bearing balls mechanical workout of the present invention, its technological process:
(1) normalizing treatment: material is heated to temperature in stove when being 865 ~ 875 DEG C, insulation 35min; Then, when material to be cooled in oil surface temperature be 330 ~ 380 DEG C, take out material and cool in atmosphere.
(2) anneal: material is heated to temperature in stove when being 735 ~ 740 DEG C, insulation 4.5h, with stove cooling down.Durometer level is 210 ~ 240HB.
2. work in-process thermal treatment after steel bearing balls mechanical workout, tempering process code of quenching:
(1) quench treatment: workpiece is heated to temperature in stove when being 875 ~ 880 DEG C, insulation 30 ~ 35min, then by workpiece in (2) temper: workpiece is heated to temperature in stove when being 230 ~ 240 DEG C, and insulation 4.5h, temper number is 57HRC.
3. three groups of compressive failure loads of steel bearing balls 7/8u (￠ 22.23mm) of processing be 598,595,615KN.
Claims (1)
1. a heat treatment technics for obdurability, shock resistance steel bearing balls, is characterized in that:
1) material require thermal treatment before steel bearing balls mechanical workout, its technological process:
1. normalizing treatment: material is heated to temperature in stove when being 860 ~ 880 DEG C, insulation 30 ~ 40min; Then, when material to be cooled in oil surface temperature be 300 ~ 400 DEG C, take out material and cool in atmosphere;
2. anneal: material is heated to temperature in stove when being 730 ~ 740 DEG C, insulation 4 ~ 5h, with stove cooling down;
2) work in-process thermal treatment after steel bearing balls mechanical workout, tempering process code of quenching:
1. quench treatment: workpiece is heated to temperature in stove when being 870 ~ 880 DEG C, insulation 25 ~ 35min, then by the rapid quenching oil quenching of workpiece at 60 ~ 80 DEG C;
2. temper: workpiece is heated to temperature in stove when being 220 ~ 240 DEG C, insulation 4 ~ 5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579529.9A CN104651596A (en) | 2013-11-19 | 2013-11-19 | Heat treatment technology for steel ball used for strong toughness and impact-resistant bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579529.9A CN104651596A (en) | 2013-11-19 | 2013-11-19 | Heat treatment technology for steel ball used for strong toughness and impact-resistant bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104651596A true CN104651596A (en) | 2015-05-27 |
Family
ID=53243232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310579529.9A Pending CN104651596A (en) | 2013-11-19 | 2013-11-19 | Heat treatment technology for steel ball used for strong toughness and impact-resistant bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104651596A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868421A (en) * | 2016-12-28 | 2017-06-20 | 芜湖市永帆精密模具科技有限公司 | A kind of chromium cracking resistance abrasion-proof steel ball high and preparation method thereof |
-
2013
- 2013-11-19 CN CN201310579529.9A patent/CN104651596A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868421A (en) * | 2016-12-28 | 2017-06-20 | 芜湖市永帆精密模具科技有限公司 | A kind of chromium cracking resistance abrasion-proof steel ball high and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102534134B (en) | Bainite isothermal quenching thermal treatment process method for medium-carbon bearing steel | |
| CN104981556B (en) | Tufftride high-frequency quenching steel part | |
| CN100503893C (en) | Process for producing gear with hard bainite structure on surface | |
| CN103132087B (en) | Technology for controlling hardness distribution of material for 23CrNi3Mo drill tool | |
| CN102011055B (en) | Method for manufacturing hard bainite bearing | |
| CN110527904B (en) | Manufacturing method of long-life high-pressure pump head body | |
| CN101724742B (en) | Heat treatment process of notch ductile steel bearing balls | |
| CN101693943A (en) | High speed steel tool heat treatment method | |
| CN109536691A (en) | A kind of preparation method of low-temperature impact-resistant CrMo alloy steel forging circle | |
| CN105063320B (en) | A kind of preparation method of high-wind pressure impactor piston | |
| CN107099767A (en) | A kind of explosion drill bit Technology for Heating Processing | |
| CN103103320B (en) | Method for improving low-temperature impact toughness of 40CrNiMoA material | |
| CN104195311A (en) | Heat treatment process for rollers of roller bits | |
| CN110564922B (en) | Improved quenching process for steel for gear wheel | |
| CN114990447A (en) | Alloy material, hole expanding die and processing technology | |
| CN104451705A (en) | Gear manufacturing process | |
| CN104651596A (en) | Heat treatment technology for steel ball used for strong toughness and impact-resistant bearing | |
| CN114941104B (en) | Heat treatment process of ultrahigh-strength 30CrNi2MoV forging drilling tool material | |
| CN106119768B (en) | A kind of processing method of slips | |
| CN104630445A (en) | Heat treatment technology of impact-resistance bearing | |
| CN104481409A (en) | Manufacturing method of rock drill | |
| CN112853049B (en) | High-performance shaft sleeve material and heat treatment method thereof | |
| Wahab et al. | Effect of heat treatment on the fracture toughness of AISI 4140 Steel | |
| CN111519001A (en) | Manufacturing method of small-size strong-toughness eccentric motor shaft | |
| JP7469596B2 (en) | Bearing Steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150527 |
|
| WD01 | Invention patent application deemed withdrawn after publication |