CN102161013A - Manufacturing method of impact-resistant alloy forged balls - Google Patents
Manufacturing method of impact-resistant alloy forged balls Download PDFInfo
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- CN102161013A CN102161013A CN2010101134715A CN201010113471A CN102161013A CN 102161013 A CN102161013 A CN 102161013A CN 2010101134715 A CN2010101134715 A CN 2010101134715A CN 201010113471 A CN201010113471 A CN 201010113471A CN 102161013 A CN102161013 A CN 102161013A
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Abstract
The invention relates to a manufacturing method of impact-resistant alloy forged balls, which is characterized by comprising the following production steps of: (1) taking and melting medium carbon alloy steel, adding Cv and Mn and obtaining molten steel; (2) firstly carrying out smelting and refining on the molten steel and then forging into round steel by continuous casting and connecting rails; (3) manufacturing a forging blank; (4) forging; (5) quenching in a spraying manner; (6) water quenching; (7) insulating and tempering; and (8) carrying out magnetizing treatment: carrying out magnetizing treatment on grinding balls by utilizing the dynamic magnetic field, and obtaining the impact-resistant alloy forged balls. In the grinding balls manufactured by the method, the crushing rate can be guaranteed to be less than 1%, the impact toughness value is larger than 15J/cm<2>, and the forged ball can be subjected to a falling ball test for above 8000 times on a falling ball testing machine with the height of 5.5m.
Description
Technical field
The present invention relates to a kind of preparation method of ball mills, especially a kind of shock-resistant alloy is forged the preparation method of ball.
Background technology
Along with fast development of national economy, market is vigorous day by day to the demand of raw material resources, and large quantities of large-scale mine enterprise builds up successively.Ball mill is that bargh carries out a broken visual plant to raw material.For satisfying the demand of bargh, the diameter of ball mill is also increasing.The significantly increase of ball mill diameter, ball mill also improves greatly to the requirement of the mechanical performance of abrading-ball, and existing abrading-ball performance is difficult to satisfy the requirement of the big ball milling of diameter.Therefore develop a kind of abrasion-proof steel ball of mechanical performance excellence,, have vast market prospect to satisfy the needs of growing large-sized grinder.
Summary of the invention
Purpose of the present invention just provides a kind of big ball mill wearing steel ball of diameter that satisfies.
The technical solution used in the present invention is: a kind of shock-resistant alloy is forged the preparation method of ball, it is characterized in that it comprises following production stage:
(1) get the medium carbon alloy steel fusing, add Cv and Mn, make its chemical composition be: C is 0.3-0.8%; Mn is 0.9-1.5%; Cv is 0-1%; S is 0-0.03%; P is 0-0.03%; MO, V, Ti trace obtain molten steel;
(2) to the melting of molten steel elder generation, refining connects rail by continuous casting again and forges into round steel;
(3) making of forging embryo, by diameter and the length that alloy is forged the size selection round steel of bulb diameter, select parameter to be: to forge bulb diameter: the round steel diameter=(1.3-1.6): 1, compression ratio (forging embryo length: forge bulb diameter)=(2-3): 1;
(4) forge, will forge and forge after embryo is heated to 1000 degrees centigrade-1200 degrees centigrade;
(5) mist is quenched, and utilizes the mode of nature cooling to be cooled to 750-850 degree centigrade the abrading-ball of forging and molding, and it is cold to carry out the water smoke spray then, makes each surface of abrading-ball go up spraying evenly, sprays 6-10 minute, makes the abrading-ball surface temperature reduce to 600-700 degree centigrade;
(6) shrend, abrading-ball is carried out shrend, and water temperature is controlled at 10-40 degree centigrade during quenching, and mill is asked into coolant-temperature gage and is controlled at 600-700 degree centigrade, cool time was controlled between 2-5 minute, and temperature remains on and carries out tempering between 200-280 degree centigrade when making the abrading-ball water outlet;
(7) insulation tempering is incubated tempering to the abrading-ball after quenching, and temperature is controlled between 200-280 degree centigrade, and tempering time is 2-4 hour;
(8) magnetization is handled, and utilizes dynamic magnetic field that abrading-ball is magnetized processing, and it is by magnetoelectric induction that abrading-ball is magnetized processing, and passivation abrading-ball internal tiny crack improves abrading-ball impact flexibility, reduces percentage of damage.Magnetization changes the arrangement of metal inside electronics phase sequence simultaneously, thereby improves the corrosion resistance of abrading-ball, thereby reduces the abrasion of abrading-ball in wear process, promptly gets shock-resistant alloy and forges ball.
The invention has the beneficial effects as follows: the abrading-ball that the present invention makes, can guarantee percentage of damage less than 1%, notched bar impact strength is greater than 15J/cm2, is fit on 5.5 meters height of falling ball impact test falling ball impact test machine that large-scale ball milling parameter testing reaches more than 8000 times more than 8 meters.
The specific embodiment
The preparation method that a kind of shock-resistant alloy of the present invention is forged ball is that it comprises following production stage:
(1) get the medium carbon alloy steel fusing, add Cv and Mn, make its chemical composition be: C is 0.5%; Mn is 1.2%; Cv is 0.6%; S is 0.02%; P is 0.02%; MO, V, Ti trace obtain molten steel;
(2) to the melting of molten steel elder generation, refining connects rail by continuous casting again and forges into round steel;
(3) making of forging embryo by diameter and the length that alloy is forged the size selection round steel of bulb diameter, selects parameter to be: to forge bulb diameter: round steel diameter=1.4: 1, compression ratio (forging embryo length: forge bulb diameter)=2.5: 1;
(4) forge, will forge and forge after embryo is heated to 1100 degrees centigrade;
(5) mist is quenched, and utilizes the mode of nature cooling to be cooled to 800 degrees centigrade the abrading-ball of forging and molding, and it is cold to carry out the water smoke spray then, makes each surface of abrading-ball go up spraying evenly, sprays 8 minutes, makes the abrading-ball surface temperature reduce to 650 degrees centigrade;
(6) shrend is carried out shrend to abrading-ball, and water temperature is controlled at 20 degrees centigrade during quenching, and mill is asked into coolant-temperature gage and is controlled at 650-680 degree centigrade, and the cool time was controlled between 3 minutes, and temperature remains on and carries out tempering between 250 degrees centigrade when making the abrading-ball water outlet;
(7) insulation tempering is incubated tempering to the abrading-ball after quenching, and temperature is controlled between 250 degrees centigrade, and tempering time is 3 hours;
(8) magnetization is handled, and utilizes dynamic magnetic field that abrading-ball is magnetized processing, and it is by magnetoelectric induction that abrading-ball is magnetized processing, and passivation abrading-ball internal tiny crack improves abrading-ball impact flexibility, reduces percentage of damage.Magnetization changes the arrangement of metal inside electronics phase sequence simultaneously, thereby improves the corrosion resistance of abrading-ball, thereby reduces the abrasion of abrading-ball in wear process, promptly gets shock-resistant alloy and forges ball.
Claims (1)
1. preparation method that shock-resistant alloy is forged ball, it is characterized in that it comprises following production stage: (1) gets the medium carbon alloy steel fusing, adds Cv and Mn, and make its chemical composition be: C is 0.3-0.8%; Mn is 0.9-1.5%; Cv is 0-1%; S is 0-0.03%; P is 0-0.03%; MO, V, Ti trace obtain molten steel;
(2) to the melting of molten steel elder generation, refining connects rail by continuous casting again and forges into round steel;
(3) making of forging embryo, by diameter and the length that alloy is forged the size selection round steel of bulb diameter, select parameter to be: to forge bulb diameter: the round steel diameter=(1.3-1.6): 1, compression ratio (forging embryo length: forge bulb diameter)=(2-3): 1;
(4) forge, will forge and forge after embryo is heated to 1000 degrees centigrade-1200 degrees centigrade;
(5) mist is quenched, and utilizes the mode of nature cooling to be cooled to 750-850 degree centigrade the abrading-ball of forging and molding, and it is cold to carry out the water smoke spray then, makes each surface of abrading-ball go up spraying evenly, sprays 6-10 minute, makes the abrading-ball surface temperature reduce to 600-700 degree centigrade;
(6) shrend, abrading-ball is carried out shrend, and water temperature is controlled at 10-40 degree centigrade during quenching, and mill is asked into coolant-temperature gage and is controlled at 600-700 degree centigrade, cool time was controlled between 2-5 minute, and temperature remains on and carries out tempering between 200-280 degree centigrade when making the abrading-ball water outlet;
(7) insulation tempering is incubated tempering to the abrading-ball after quenching, and temperature is controlled between 200-280 degree centigrade, and tempering time is 2-4 hour;
(8) magnetization is handled, and utilizes dynamic magnetic field that abrading-ball is magnetized processing, and it is by magnetoelectric induction that abrading-ball is magnetized processing, and passivation abrading-ball internal tiny crack improves abrading-ball impact flexibility, reduces percentage of damage.Magnetization changes the arrangement of metal inside electronics phase sequence simultaneously, thereby improves the corrosion resistance of abrading-ball, thereby reduces the abrasion of abrading-ball in wear process, promptly gets shock-resistant alloy and forges ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101134715A CN102161013A (en) | 2010-02-21 | 2010-02-21 | Manufacturing method of impact-resistant alloy forged balls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101134715A CN102161013A (en) | 2010-02-21 | 2010-02-21 | Manufacturing method of impact-resistant alloy forged balls |
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| Publication Number | Publication Date |
|---|---|
| CN102161013A true CN102161013A (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101134715A Pending CN102161013A (en) | 2010-02-21 | 2010-02-21 | Manufacturing method of impact-resistant alloy forged balls |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506481A (en) * | 2014-09-29 | 2016-04-20 | 铜陵有色金神耐磨材料有限责任公司 | Manufacturing method of impact-resistant alloy grinding balls |
| CN110373534A (en) * | 2019-07-25 | 2019-10-25 | 赵京晨 | A method of slowing down solid components crackle generation and expansion |
-
2010
- 2010-02-21 CN CN2010101134715A patent/CN102161013A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506481A (en) * | 2014-09-29 | 2016-04-20 | 铜陵有色金神耐磨材料有限责任公司 | Manufacturing method of impact-resistant alloy grinding balls |
| CN110373534A (en) * | 2019-07-25 | 2019-10-25 | 赵京晨 | A method of slowing down solid components crackle generation and expansion |
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Application publication date: 20110824 |