CN104694730A - Bearing matrix aging treatment method and device capable of implementing temperature-force coupled loading - Google Patents
Bearing matrix aging treatment method and device capable of implementing temperature-force coupled loading Download PDFInfo
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- CN104694730A CN104694730A CN201510089258.8A CN201510089258A CN104694730A CN 104694730 A CN104694730 A CN 104694730A CN 201510089258 A CN201510089258 A CN 201510089258A CN 104694730 A CN104694730 A CN 104694730A
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- force
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- 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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
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- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention relates to a bearing matrix aging treatment method and device. The method is characterized by comprising the following steps: 1) preparing a bearing matrix aging treatment device capable of implementing temperature-force coupled loading, wherein the device comprises a force coupled loading device and a temperature control box provided with a heating furnace, and the force coupled loading device comprises an upper cover, a locking bolt, a cambered pressing block, a slider, a shell, a bevel gear wheel, a base and a bevel pinion; 2) flatly putting the bearing matrix on the outer side of the cambered pressing block; rotating the bevel pinion, limiting the radial movement of the bearing matrix and enabling the bearing matrix to bear the radial force; 3) putting into the temperature control box provided with a heating furnace, regulating the furnace mild heating and holding time, and carrying out temperature-force coupled loading aging treatment on the bearing matrix; and 4) after finishing the treatment, taking out the bearing matrix. The method can promote the unstable structure in the bearing matrix to change, thereby enhancing the stability of the bearing matrix structure and ensuring the precision stability and service life in the bearing service process.
Description
Technical field
The present invention relates to a kind of bearing matrix aging treatment method and device thereof, be specifically related to a kind of temperature-couple of force that realizes and close the bearing matrix aging treatment method and device thereof that load.
Background technology
Bearing is the precision component of mechanized equipment key, and its precision directly affects operating accuracy and the reliability of main frame.Matrix after bearing normative heat treatment is residual austenite, tempered martensite and a small amount of carbide, and wherein residual austenite and tempered martensite are all unstable organizing.And temperature in bearing military service process and load effect can impel matrix instability to organize changes, cause dimensional change, cause bearing accuracy to lose gradually and finally lose, affect bearing service life and reliability of main.Therefore, for bearing, especially precision bearing, how improving matrix stability thus improving bearing accuracy stability is the key technical problem that current bearing industry faces.
Summary of the invention
For above-mentioned present situation, a kind of temperature-couple of force that realizes is the object of the present invention is to provide to close the bearing matrix aging treatment method and device thereof that load, temperature-couple of force can be carried out to the bearing matrix after normative heat treatment, before ground finish by the method and device thereof and close ageing treatment, impel bearing intrinsic silicon instability to organize to change, thus improve bearing matrix stability, ensure bearing military service Process Precision stability and life-span.
To achieve these goals, the technical solution used in the present invention is: a kind of temperature-couple of force that realizes closes the bearing matrix aging treatment method loaded, and it is characterized in that comprising the following steps:
1) prepare to realize temperature-couple of force and close the bearing matrix ageing treatment device loaded: it comprises couple of force and closes deceleration loading device and the temperature-controlled box 10 with process furnace;
Couple of force closes deceleration loading device and comprises upper cover 1, securing bolt 2, arc briquetting 3, slide block 4, housing 5, bevel gear wheel 6, base 7, bevel pinion 8; The direction all around of upper cover 1 is equipped with slide opening, arc briquetting 3 and securing bolt 2 are respectively four, four arc briquettings 3 are all positioned at the below of upper cover 1, and are distributed in direction all around, and the lower end of securing bolt 2 is threaded with arc briquetting 3 through after the slide opening of upper cover 1;
Housing 5 is provided with along radially-arranged four the T-shaped chutes of housing, and be provided with slide block 4 in T-shaped chute, slide block 4 is positioned at the below of arc briquetting 3, together with arc briquetting 3 is bolted with slide block 4; The front of bevel gear wheel 5 is provided with the end-face helical matched with the bottom surface screw thread of slide block 4, and the back side of bevel gear wheel 5 is provided with the intermeshing cone tooth with bevel pinion 8, and engages each other with bevel pinion 8; Bevel pinion 8 penetrates enclosure interior by the hole of housing 5 side, is screwed in diametric(al); Housing 5 is connected with chuck base 7 by bolt, and is held up by bevel gear wheel 6 with the annulus convex surface on chuck base;
2) securing bolt 2 and upper cover 1 is taken off; Rotate bevel pinion 8, arc briquetting 3 is drawn in the inside; Bearing matrix 9 after normative heat treatment is lain against the outside of the arc briquetting 3 on housing 5; Rotate bevel pinion 8, arc briquetting 3 is moved laterally, is close to inside bearing matrix 9, restriction bearing matrix 9 moves radially and makes it bear radial force; Then by securing bolt 2, upper cover 1 is fixed on the top of arc briquetting 3, to ensure the reliability of positioning of arc briquetting 3 and to close rigidity when loading ageing treatment at temperature-couple of force;
3) by clamping, the couple of force of bearing matrix 9 closes deceleration loading device and puts into temperature-controlled box 10 with process furnace, and the chuck base 7 making described couple of force close deceleration loading device is close to the burner hearth bottom surface of temperature-controlled box; Adjusting furnace temperature and heating and thermal insulation time, temperature-couple of force is carried out to bearing matrix and closes loading ageing treatment;
4) after loading ageing treatment of closing temperature-couple of force terminates, the described couple of force taking out clamping bearing matrix 9 closes deceleration loading device and carries out air cooling, unclamp securing bolt 2 after being chilled to room temperature and take off upper cover 1, rotating bevel pinion 8 to unclamp arc briquetting 3, take out bearing matrix 9.
The invention has the beneficial effects as follows: for size destabilization problems in normative heat treatment rear bearing matrix military service process, the present invention proposes a kind of temperature-couple of force that realizes and closes the bearing matrix aging treatment method and device thereof that load.By this device, make bearing matrix bear radial force in ageing process, accelerate the transformation of metastable organization in bearing ring matrix, change with the size in limit ageing process; Thus reduce metastable phase content, avoid normative heat treatment to the disadvantageous effect of bearing matrix dimensional stability.Therefore, the size distortion after adopting ageing device of the present invention effectively can reduce bearing matrix normative heat treatment, enhances productivity, and improves bearing matrix stability and dimensional precision stability simultaneously, ensures the precision in bearing military service process and life-span.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention can realize that temperature-couple of force closes the bearing matrix ageing treatment device loaded.
Fig. 2 is the sectional structure schematic diagram in the A-A direction shown in Fig. 1.
Fig. 3 is the structural representation that the present invention can realize that temperature-couple of force closes the upper cover of the bearing matrix ageing treatment device loaded.
Fig. 4 is the vertical view of Fig. 3.
In figure: 1-upper cover; 2-securing bolt; 3-arc briquetting; 4-slide block; 5-housing; 6-bevel gear wheel; 7-chuck base; 8-bevel pinion; 9-bearing matrix; 10-temperature-controlled box.
Embodiment
As Figure 1-4, a kind of temperature-couple of force that realizes closes the bearing matrix aging treatment method loaded, and comprises the following steps:
1) prepare to realize temperature-couple of force and close the bearing matrix ageing treatment device loaded: it comprises couple of force and closes deceleration loading device and the temperature-controlled box 10 with process furnace;
Couple of force closes deceleration loading device and comprises upper cover 1, securing bolt 2, arc briquetting 3, slide block 4, housing 5, bevel gear wheel 6, base 7, bevel pinion 8; The direction all around of upper cover 1 is equipped with slide opening, arc briquetting 3 and securing bolt 2 are respectively four (four securing bolts 2 are each passed through the slide opening in upper cover 1 all around direction), four arc briquettings 3 are all positioned at the below of upper cover 1, and be distributed in direction all around, through being threaded with arc briquetting 3 after the slide opening of upper cover 1, (securing bolt 2 can move along slide opening in the lower end of securing bolt 2, meanwhile, upper cover 1 is linked together by securing bolt 2 and arc briquetting 3);
Housing 5 is provided with along radially-arranged four the T-shaped chutes of housing, is provided with slide block 4(and slide block 4 is four in T-shaped chute), slide block 4 is positioned at the below of arc briquetting 3, together with arc briquetting 3 is bolted with slide block 4; The front of bevel gear wheel 5 is provided with the end-face helical matched with the bottom surface screw thread of slide block 4, and (bevel gear wheel 5 rotates, slide block 4 left and right directions of left and right moves, slide block 4 fore-and-aft direction of front and back moves), the back side of bevel gear wheel 5 is provided with the intermeshing cone tooth with bevel pinion 8, and engages each other with bevel pinion 8; Bevel pinion 8 penetrates enclosure interior by the hole of housing 5 side, is screwed (bevel pinion 8 is rotatable) in diametric(al); Housing 5 is connected with chuck base 7 by bolt, and is held up by bevel gear wheel 6 with the annulus convex surface on chuck base; The turning axle of bevel pinion 8 opposite side is connected (as motor, realize the rotation of bevel pinion 8, thus realize the inside or outside movement of arc briquetting 3) by shaft coupling with rotating mechanism;
2) securing bolt 2 and upper cover 1 is taken off; Rotate bevel pinion 8, arc briquetting 3 is drawn in the inside; Bearing matrix 9 after normative heat treatment is lain against the outside (namely bearing matrix 9 is enclosed within the outside of four arc briquettings 3, once can place one or more bearing matrix 9) of the arc briquetting 3 on housing 5; Again according to the size of bearing matrix, rotate bevel pinion 8, arc briquetting 3 is moved laterally, is close to inside bearing matrix 9, restriction bearing matrix 9 moves radially and makes it bear radial force, and the size of radial force regulates the compression degree of arc briquetting 3 to control by rotating bevel pinion 8; Then by securing bolt 2, upper cover 1 is fixed on the top of arc briquetting 3 to ensure the reliability of locating;
3) by clamping, the couple of force of bearing matrix 9 closes deceleration loading device and puts into temperature-controlled box 10 with process furnace, and the chuck base 7 making described couple of force close deceleration loading device is close to the burner hearth bottom surface of temperature-controlled box; Adjusting furnace temperature and heating and thermal insulation time, temperature-couple of force is carried out to bearing matrix and closes loading ageing treatment;
4) after loading ageing treatment of closing temperature-couple of force terminates, the described couple of force taking out clamping bearing matrix 9 closes deceleration loading device and carries out air cooling, unclamp securing bolt 2 after being chilled to room temperature and take off upper cover 1, rotating bevel pinion 8 to unclamp arc briquetting 3, take out bearing matrix 9.
The material of bearing matrix 9 is GCr15, adopts above-mentioned process, and the size of radial force is 15000N, and furnace temperature is 160 DEG C, and the heating and thermal insulation time is 2h.The microtexture of the bearing matrix 9 after loading ageing treatment of closing temperature-couple of force terminates is tempered martensite, residual austenite and carbide.Tempered martensite carbon content is 0.08 wt.%, the tempered martensite of bearing matrix 9 is more conventionally quenched, more stable after tempering, to ensure that tempered martensite does not decompose in bearing matrix 9 military service process; Residual austenite volume is 3.0 vol.%, the residual austenite content of bearing matrix 9 is more conventionally quenched, lower after tempering, to ensure that residual austenite changes hardly in bearing matrix 9 military service process; Carbide dispersion tiny is in a large number evenly distributed in bearing matrix 9, to ensure hardness and the wear resistance of bearing matrix 9.Closed the bearing matrix aging treatment method loaded by temperature-couple of force, accelerate the transformation of metastable organization in bearing ring matrix 9, reduce metastable phase content, thus improve bearing matrix stability, ensure bearing military service Process Precision and life-span.
Claims (2)
1. can realize temperature-couple of force and close the bearing matrix aging treatment method loaded, it is characterized in that comprising the following steps:
1) prepare to realize temperature-couple of force and close the bearing matrix ageing treatment device loaded: it comprises couple of force and closes deceleration loading device and the temperature-controlled box (10) with process furnace;
Couple of force closes deceleration loading device and comprises upper cover (1), securing bolt (2), arc briquetting (3), slide block (4), housing (5), bevel gear wheel (6), base (7), bevel pinion (8); The direction all around of upper cover (1) is equipped with slide opening, arc briquetting (3) and securing bolt (2) are respectively four, four arc briquettings (3) are all positioned at the below of upper cover (1), and being distributed in direction all around, the lower end of securing bolt (2) is threaded with arc briquetting (3) through after the slide opening of upper cover (1); Housing (5) is provided with along radially-arranged four the T-shaped chutes of housing, and be provided with slide block (4) in T-shaped chute, slide block (4) is positioned at the below of arc briquetting (3), together with arc briquetting (3) is bolted with slide block (4); The front of bevel gear wheel (5) is provided with the end-face helical matched with the bottom surface screw thread of slide block (4), and the back side of bevel gear wheel (5) is provided with cone tooth intermeshing with bevel pinion (8), and engages each other with bevel pinion (8); Bevel pinion (8) penetrates enclosure interior by the hole of housing (5) side; Housing (5) is connected with chuck base (7) by bolt, and is held up by bevel gear wheel (6) with the annulus convex surface on chuck base;
2) securing bolt (2) and upper cover (1) is taken off; Rotate bevel pinion (8), arc briquetting (3) is drawn in the inside; Bearing matrix (9) after normative heat treatment is lain against the outside of the arc briquetting (3) on housing (5); Rotate bevel pinion (8), arc briquetting (3) is moved laterally, be close to bearing matrix (9) inner side, restriction bearing matrix (9) moves radially and makes it bear radial force; Then by securing bolt (2), upper cover (1) is fixed on the top of arc briquetting (3);
3) by clamping, the couple of force of bearing matrix (9) closes deceleration loading device and puts into temperature-controlled box (10) with process furnace, and the chuck base (7) making described couple of force close deceleration loading device is close to the burner hearth bottom surface of temperature-controlled box; Adjusting furnace temperature and heating and thermal insulation time, temperature-couple of force is carried out to bearing matrix and closes loading ageing treatment;
4) after loading ageing treatment of closing temperature-couple of force terminates, the described couple of force taking out clamping bearing matrix (9) closes deceleration loading device and carries out air cooling, unclamp securing bolt (2) after being chilled to room temperature and take off upper cover (1), rotate bevel pinion (8) to unclamp arc briquetting (3), take out bearing matrix (9).
2. realize a device for method described in claim 1, it is characterized in that: it comprises couple of force and closes deceleration loading device and the temperature-controlled box (10) with process furnace;
Couple of force closes deceleration loading device and comprises upper cover (1), securing bolt (2), arc briquetting (3), slide block (4), housing (5), bevel gear wheel (6), base (7), bevel pinion (8); The direction all around of upper cover (1) is equipped with slide opening, arc briquetting (3) and securing bolt (2) are respectively four, four arc briquettings (3) are all positioned at the below of upper cover (1), and being distributed in direction all around, the lower end of securing bolt (2) is threaded with arc briquetting (3) through after the slide opening of upper cover (1); Housing (5) is provided with along radially-arranged four the T-shaped chutes of housing, and be provided with slide block (4) in T-shaped chute, slide block (4) is positioned at the below of arc briquetting (3), together with arc briquetting (3) is bolted with slide block (4); The front of bevel gear wheel (5) is provided with the end-face helical matched with the bottom surface screw thread of slide block (4), and the back side of bevel gear wheel (5) is provided with cone tooth intermeshing with bevel pinion (8), and engages each other with bevel pinion (8); Bevel pinion (8) penetrates enclosure interior by the hole of housing (5) side; Housing (5) is connected with chuck base (7) by bolt, and is held up by bevel gear wheel (6) with the annulus convex surface on chuck base;
Couple of force closes deceleration loading device and is placed in temperature-controlled box (10), and the chuck base (7) of couple of force conjunction deceleration loading device is close to the burner hearth bottom surface of temperature-controlled box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510089258.8A CN104694730B (en) | 2015-02-27 | 2015-02-27 | Bearing matrix aging treatment method and device capable of implementing temperature-force coupled loading |
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| CN201510089258.8A CN104694730B (en) | 2015-02-27 | 2015-02-27 | Bearing matrix aging treatment method and device capable of implementing temperature-force coupled loading |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107974534A (en) * | 2017-11-23 | 2018-05-01 | 方晓超 | A kind of bearing matrix forming residual stress controls method of magnetically processing |
| CN108384943A (en) * | 2018-01-23 | 2018-08-10 | 武汉理工大学 | A kind of Temperature-Stress coupled aging processing unit and its application method |
| US10228022B2 (en) | 2016-08-22 | 2019-03-12 | Wuhan University Of Technology | Manufacturing method of precision machine tool bearing with high precision stability |
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| CN1262709A (en) * | 1997-07-10 | 2000-08-09 | Skf工程研究中心公司 | Method for performing heat treatment on metallic rings, and bearing ring thus obtained |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10228022B2 (en) | 2016-08-22 | 2019-03-12 | Wuhan University Of Technology | Manufacturing method of precision machine tool bearing with high precision stability |
| CN107974534A (en) * | 2017-11-23 | 2018-05-01 | 方晓超 | A kind of bearing matrix forming residual stress controls method of magnetically processing |
| CN108384943A (en) * | 2018-01-23 | 2018-08-10 | 武汉理工大学 | A kind of Temperature-Stress coupled aging processing unit and its application method |
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| CN104694730B (en) | 2017-02-01 |
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