CN1243207A - Method for producing collar blank of rolling bearing - Google Patents
Method for producing collar blank of rolling bearing Download PDFInfo
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- CN1243207A CN1243207A CN 98116805 CN98116805A CN1243207A CN 1243207 A CN1243207 A CN 1243207A CN 98116805 CN98116805 CN 98116805 CN 98116805 A CN98116805 A CN 98116805A CN 1243207 A CN1243207 A CN 1243207A
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- rolling bearing
- collar blank
- centrifugal casting
- steel
- blank
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- Rolling Contact Bearings (AREA)
Abstract
The present invention relates to a production method of raceway blank and application of centrifugal casting technology in the course of producing roller bearing race. Said invention combines the electric furnace steel-smelting technique, centrifugal casting technique and bearing forging technique together organically so as to attain the goal of reducing its production cost and raising product quality.
Description
The present invention relates to a kind of production method of collar blank of rolling bearing, specially refer to the application of centrifugal casting technique in the production process of collar blank of rolling bearing.
The production method of present collar blank of rolling bearing, generally be with steel-smelting electric furnace metal smelt casting ingot-forming, the finishing surface of steel ingot, steel ingot is through homogenizing, forging is become a useful person, and then by Production of bearing producer according to different rolling bearing models and weight heats, blanking, forging molding.Aforementioned production method, because production process route is long, thereby cause collar blank of rolling bearing production cost height, simultaneously because in the production process of Bearing Steel, can not guarantee Bearing Steel interior tissue uniformity and cleanliness in high request ground, cause the inner segregation of a steel easily, the quality problems such as reaching sonims of loosening.
Purpose of the present invention is to provide a kind of production method of collar blank of rolling bearing, and it combines metallurgical technology and Machine Manufacturing Technology, thereby reaches cost of production that reduces collar blank of rolling bearing and the purpose that improves the quality.
The present invention realizes by the technological method of the following stated, as shown in Figure 1: according to the required material difference of collar blank of rolling bearing, with required furnace charge, press different proportion and add the steel-smelting electric furnace heat fused, utilize conventional smelting process to smelt, when temperature reaches 1580 ℃ to 1600 ℃, come out of the stove, after molten steel is poured ladle into, molten steel is poured in the rotating mould shape of centrifugal casting machine carry out centrifugal casting again.In casting process, implement to force cooling inside and outside the mould shape, treat that molten steel cools is solidified after, depanning insulation slow cooling is to normal temperature.To cast good workpiece then,, be heated to 900 ℃ to 1100 ℃ forging and moldings according to the conventional forging method of collar blank of rolling bearing.Make collar blank of rolling bearing through the Overheating Treatment spheroidizing annealing at last.The present invention makes the Structural Hardware of collar blank of rolling bearing by metallurgical technology and Machine Manufacturing Technology combination, and the distribution of carbide is tending towards rationally more, and its consistency is increased, thereby guarantees the quality of collar blank of rolling bearing.
The present invention is further illustrated below in conjunction with embodiment
Embodiment 1: 6414 profile shafts hold the production method of outer collar blank as shown in Figure 2:
The first step is smelted the GCr15 Bearing Steel with 10 tons of electric arc furnaces by oxidizing process, and the conversion iron of pack into earlier 10 tons of steel scraps and 80 kilograms send the electricity beginning molten, wear well fritting sampling and make C, P and analyze until molten clear, when temperature greater than 1530 ℃ of beginning oxidation sample analysis C.Add Fe-Mn latter stage in oxidation and do the manganese boiling, the reduction of then skimming remakes new slag, adds powdered carbon and Fe-Si powder deoxygenation refining in batches, and alloyage adds high-carbon Fe-Cr250kg, the continuation deoxygenation refining.Temperature adjustment to 1620 ℃ ± 10 ℃ under composition, temperature prerequisite up to standard, adds Fe-Si, and metallic aluminium carries out tapping behind the final deoxidizing.
Second step: will smelt good molten steel and pour in the ladle of capacity 250kg.
The 3rd step: the molten steel in the ladle is poured in the rotating mould shape of each centrifugal casting machine, be cast as the sleeve of external diameter 137mm * internal diameter 71mm * high 292mm, inside and outside strong cooling in the casting cycle, when temperature dropped to below 1000 ℃, depanning insulation slow cooling was to normal temperature.
The 4th step: the sleeve that centrifugal casting is good, heat treatment method carries out spheroidizing annealing routinely.
The 5th step: the sleeve after will annealing is cut into the high lasso of 56.5mm on sawing machine.
The 6th step: the cover figure that will cut off is heated to more than 1000 ℃, sends into press machine and is flattened into the 45mm height.
The 7th step: the lasso after will flattening while hot sends into ring rolling machine and external diameter 183mm * internal diameter 145mm * high 45mm is arrived in reaming
The 8th step: send into shaping mould and carry out shaping.
The 9th step: the collar blank after the shaping scattered or implements spraying and cool off.
The tenth step: badly sending into annealing furnace carries out annealing in process according to a conventional method with the lasso hair, finally makes rolling bearing 6414 type outer collar blanks.
Embodiment 2 as shown in Figure 3,6414 profile shafts hold the production method of inner ring blank:
The first step adopts the 100kg medium-frequency induction furnace to smelt Bearing Steel GCr15, and charge composition carries out 85.5kg is cleaned steel scrap and 12kg conversion iron according to a conventional method, dissolves with furnace charge progressively to add until molten clear.After analysing as chemical composition, add the part pig iron again and transfer carbon, add Fe-Mn, Fe-Si deoxidation, then add high-carbon Fe-Cr2.5kg and carry out the molten steel alloyage, it is up to standard to adjust molten steel temperature and be 1600 ℃ and composition, finally carries out aluminium deoxidation, can tap after every technical order is up to standard.
Second step: molten steel in the electric furnace is poured in the ladle that capacity is 25kg.
The 3rd step: with the molten steel in the ladle, send in the rotating mould shape of each centrifugal casting machine, be cast into external diameter 95mm * internal diameter 35mm * high 50mm garden cover, in the casting cycle, the inside and outside enforcement of mould shape forced cooling, and depanning insulation slow cooling is to normal temperature when temperature drops to below 1000 ℃.
The 4th step: the garden cover of casting is heated to more than 900 ℃, delivers to hammer and upward implement to rub to pack the lasso that external diameter 106.6mm * internal diameter 67.5mm * high 45mm is made in reaming.
The 5th goes on foot: the lasso that forges being scattered or implement spraying is cooled to normal temperature.
The 6th step: lasso is sent into annealing furnace carry out annealing in process according to a conventional method, finally make rolling bearing 6414 type inside race blanks.
Claims (1)
1, a kind of production method of collar blank of rolling bearing is characterized in that may further comprise the steps: first step: with steel-smelting electric furnace routinely smelting process carry out metal smelt.Second step: carry out centrifugal casting according to a conventional method with centrifugal casting machine.Third step: forge according to a conventional method with forging machine.The 4th step: carry out annealing in process according to a conventional method with annealing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98116805 CN1243207A (en) | 1998-07-25 | 1998-07-25 | Method for producing collar blank of rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98116805 CN1243207A (en) | 1998-07-25 | 1998-07-25 | Method for producing collar blank of rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1243207A true CN1243207A (en) | 2000-02-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98116805 Pending CN1243207A (en) | 1998-07-25 | 1998-07-25 | Method for producing collar blank of rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1243207A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408879C (en) * | 2005-09-07 | 2008-08-06 | 熊成伦 | Method for producing bearing ferrule blanks |
| CN100593659C (en) * | 2007-10-31 | 2010-03-10 | 二重集团（德阳）重型装备股份有限公司 | Compound production method of valve body and casing tube |
| CN101651391B (en) * | 2009-09-11 | 2011-06-15 | 无锡哈电电机有限公司 | Method for processing high-voltage motor bearing sleeve |
| CN109434392A (en) * | 2018-12-21 | 2019-03-08 | 东莞市维立五金科技有限公司 | Production of bearing technique and Production of bearing system |
| CN113305234A (en) * | 2021-04-29 | 2021-08-27 | 杭州临安培富机车部件有限公司 | Method for finishing circle for producing sliding bearing bush |
-
1998
- 1998-07-25 CN CN 98116805 patent/CN1243207A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408879C (en) * | 2005-09-07 | 2008-08-06 | 熊成伦 | Method for producing bearing ferrule blanks |
| CN100593659C (en) * | 2007-10-31 | 2010-03-10 | 二重集团（德阳）重型装备股份有限公司 | Compound production method of valve body and casing tube |
| CN101651391B (en) * | 2009-09-11 | 2011-06-15 | 无锡哈电电机有限公司 | Method for processing high-voltage motor bearing sleeve |
| CN109434392A (en) * | 2018-12-21 | 2019-03-08 | 东莞市维立五金科技有限公司 | Production of bearing technique and Production of bearing system |
| CN113305234A (en) * | 2021-04-29 | 2021-08-27 | 杭州临安培富机车部件有限公司 | Method for finishing circle for producing sliding bearing bush |
| CN113305234B (en) * | 2021-04-29 | 2023-01-17 | 杭州临安培富机车部件有限公司 | Method for finishing circle for producing sliding bearing bush |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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