CN85104240A - Rolled steel balls for ball grinders using residual heat thermal treatment process and equipment - Google Patents
Rolled steel balls for ball grinders using residual heat thermal treatment process and equipment Download PDFInfo
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- CN85104240A CN85104240A CN198585104240A CN85104240A CN85104240A CN 85104240 A CN85104240 A CN 85104240A CN 198585104240 A CN198585104240 A CN 198585104240A CN 85104240 A CN85104240 A CN 85104240A CN 85104240 A CN85104240 A CN 85104240A
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Abstract
The present invention belongs to metal products hot-roll forming postheat treatment technology and equipment, it is a complete set of special-purpose Equipment for Heating Processing of configuration on the ball-mill steel ball production line, hot steel ball to roll forming gives cold-quenching-self-tempering thermal treatment, can make 80-125 millimeters ball milling ball hardnesses of φ bring up to 45-62HRC, double than the wear resisting property of ordinary hot steel rolling ball.Utilize behind the rolled steel balls waste heat to heat-treat and to save the energy.
Description
The invention belongs to except that for not needing the hardening product thermal treatment process and the equipment of the roll forming of reheat the moulding.
General ball milling rolled steel balls postheat treatment technology is after the hot steel ball of roll forming is imported the chain bucket elevator that is immersed in the circulating water pool immediately steel ball is carried out water cooling of short duration, promote continuously and collect, because cooling time is short, temperature is too high behind the rolled steel balls, and steel ball is transfixion in chain bucket, and ball hardness is low and inhomogeneous.
The processing method that the present invention adopts is, set up supporting special-purpose steel ball Equipment for Heating Processing in the ball rolling mill back, it utilizes the waste heat behind the steel ball rolling to give cold-quenching-insulation self-tempering thermal treatment fully, improve the homogeneity of ball hardness and wear resisting property and ball hardness, and eliminated the unrelieved stress after quenching.
Supporting steel ball Equipment for Heating Processing that the present invention adopts and ball rolling machine form the production line of working continuously, and can carry out online thermal treatment to steel ball, do not influence the original throughput of ball rolling machine.
Thermal treatment process of the present invention and equipment are mainly used in φ 80-125 millimeter hot rolling ball milling steel ball, also can be used for the thermal treatment of φ steel ball below 80 millimeters.
Thermal treatment support equipment of the present invention comprises: give steel ball input and output chute between cold handling equipment, steel ball quenching apparatus, steel ball self-tempering equipment and each equipment etc. behind the rolled steel balls.In addition, should comprise that also the steel ball quenching medium recycle system, steel ball temperature-detecting device and steel ball give speed governing operational facilities of cold, quenching apparatus etc.
In order to guarantee ball hardness, reduce production costs, system ball blank of the present invention is the low middle and high carbon low alloy steel of easily producing of price, its Chemical Composition is: carbon: 0.6-0.8%; Manganese: 0.8-1.8%; Silicon 0.2-0.4%.
Steel billet is 1000-1050 ℃ in stove internal heating temperature, and the steel ball temperature after the roll forming should be controlled between 950-1020 ℃.The handling equipment that steel ball after the roll forming falls into continuous operation immediately is sent to quenching press, and the form of handling equipment is the chain bucket elevator of adjustable speed, and Fig. 1 is this equipment work part synoptic diagram.The distance that this lift is transferred steel ball is a 5-8 rice, handover speed be 1-4 rice/minute.Adjust the handover speed of lift, make the temperature of steel ball required assurance when course of conveying hollow is as cold as the steel ball quenching, this temperature should be controlled between 780 ℃-880 ℃.Steel ball through giving first air cooling falls into the inlet end of the cooling tank 1 of chaindriven scraper-type quenching press, and pushed away to roll by the scraper plate 2 that moves continuously immediately and advancing, and simultaneously by the hurried Cooling Quenching of heat-eliminating medium of ejection from the nozzle 3 of cooling tank both sides.The pressure of adjustment quenching press scraper plate translational speed and heat-eliminating medium, flow are so that control steel ball cool time and speed of cooling.Outlet temperature after steel ball quenches should be between 180-300 ℃.
The quenching press scraper plate adopts double chain type transmission mechanism, and the driving chain wheel of chain is driven by direct-current motor and mechanical deceleration device.Scraper plate is effectively transferred total distance in cooling tank be 7-10 rice, and speed is the 0.05-0.2 meter per second
Fig. 2. be the quenching press schematic top plan view,
Fig. 3. for along Fig. 2. A-A directional profile figure,
The quenching press nozzle is made up of a plurality of, and they are the both sides that the oblique V shape is arranged in cooling tank, and skewed crossing arranges that heat-eliminating medium is produced to seethe rotation strongly and constantly change sense of rotation to strengthen cooling performance in the process of advancing of steel ball.Heat-eliminating medium adopts purified water, and pressure is the 0.8-2 kilograms per centimeter
2, flow be the 500-1800 liter/minute.
Fig. 4 is steel ball insulation tempering bucket synoptic diagram.Collect in steel ball after the quenching input insulated tank 4, steel ball was added a cover 5 insulations more than 4 hours in bucket, utilize the steel ball residual heat insulation self-tempering after quenching, and eliminated the unrelieved stress after quenching, and finally poured out in the bucket steel ball and heaped air cooling to normal temperature.
Insulated tank adopts the double wall steel construction, fills out in the interlayer and puts lagging material 6, and its thickness should be more than 100 millimeters.In order to guarantee the tempering time of every barrel of steel ball, adopt a plurality of insulated tanks to recycle in the production, the ball loadings of each barrel should be more than 5 tons.
In order to realize thermal treatment process of the present invention, must heat at steel billet, give behind the rolled steel balls in cold, quenching, four operations of tempering and dispose the temperature detection instrument respectively.
Can make the high hardness wear-resisting steel ball that hardness reaches 45-62HRC with processing method of the present invention and equipment, steel ball top layer martensite quench-hardened case thickness is at least more than 10 millimeters.Ball hardness is even, and the inner hardness decay of spheroid is slow, and centre of sphere district hardness is more than 35HRC.
Adopt technology of the present invention and equipment, but continuous production, the mechanization degree height, all two people of heat treatment step just can operational administrative.Labour intensity is low, and pollution-free harm does not need to consume in addition fuel, and steel ball heat treatment step cost per ton is no more than ternary, and the steel ball wear resisting property approximately doubles than common rolling steel ball, can obtain very big profit and the time connect economic benefit.
Claims (10)
1, a kind of rolled steel balls for ball grinders using residual heat thermal treatment process and equipment is characterized in that it utilizes the waste heat behind the steel ball rolling steel ball to be given the online thermal treatment of cold-quenching-self-tempering fully.
2, by the said steel ball heat treatment process of claim 1, it is characterised in that the blank of employing is a carbon containing 0.6～0.8%, manganese 0.8～1.8%, the medium high carbon low alloy steel of silicon 0.2～0.4%, billet heating temperature is 1000～1100 ℃, giving cold temperature behind the rolled steel balls is 780～880 ℃, and the back steel ball temperature of quenching is 180～300 ℃, and the insulation self-tempering time is more than 4 hours.
3, a kind of utilize rolled steel balls after waste heat carry out the heat treated special-purpose assorted equipment of steel ball, it is characterized in that giving cold handling equipment after it mainly comprises rolled steel balls steel ball quenching apparatus and steel ball insulation self-tempering equipment.
4, by giving cold handling equipment behind the said rolled steel balls of claim 3, it is characterised in that its form is the chain bucket elevator of adjustable speed.
5, according to claim 3,4 said chain bucket elevators, it is characterised in that it is 1～4 meter/minute that chain bucket is transferred the speed of steel ball, and total handover distance is 5～8 meters.
6, according to the said steel ball quenching apparatus of claim 3, the structure formation that it is characterized in that it is the chain drive scraper-type of adjustable speed, and its working portion is made of the cooling tank of a horizontal positioned and the scraper plate of one group of chain gear.
7, according to claim 3,6 described scraper plates, it is characterised in that they are contained in the inboard of two row's driving chains respectively, and their effective handover distances in cooling tank are 7-10 rice, and speed is 0.05～0.2 meter per second.
8,, it is characterized by the nozzle that one group of skewed crossing is arranged in the cooling tank both sides according to the described quenching apparatus of claim 3.
9, by claim 3,8 described steel ball quenching apparatus, it is characterised in that the heat-eliminating medium of use is purified water, and the pressure of water is the 0.8-2 kilograms per centimeter
2, flow be the 500-1800 liter/minute.
10, by the described steel ball of claim 3 insulation self-tempering equipment, it is characterised in that it adopts ladle body and the lid with spline structure of double wall steel construction to form by one, fills out in the double wall of ladle body and lid and is putting lagging material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585104240A CN85104240A (en) | 1985-04-14 | 1985-04-14 | Rolled steel balls for ball grinders using residual heat thermal treatment process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198585104240A CN85104240A (en) | 1985-04-14 | 1985-04-14 | Rolled steel balls for ball grinders using residual heat thermal treatment process and equipment |
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| Publication Number | Publication Date |
|---|---|
| CN85104240A true CN85104240A (en) | 1986-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198585104240A Pending CN85104240A (en) | 1985-04-14 | 1985-04-14 | Rolled steel balls for ball grinders using residual heat thermal treatment process and equipment |
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| CN (1) | CN85104240A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100509209C (en) * | 2008-05-08 | 2009-07-08 | 刘机 | Steel-forged ball processing technique |
| CN102382954A (en) * | 2011-11-02 | 2012-03-21 | 北京科技大学 | On-line continuous quenching device for skew-rolled ball-milled steel balls |
| CN103352107A (en) * | 2013-06-08 | 2013-10-16 | 铜陵市明诚铸造有限责任公司 | Forging-grinding-ball isothermal-control quenching device and method |
| CN103374651A (en) * | 2012-04-27 | 2013-10-30 | 宝山钢铁股份有限公司 | Thermal treatment method of steel coils by utilizing hot rolling residual temperature |
| CN103748288A (en) * | 2011-08-20 | 2014-04-23 | 卡特彼勒公司 | Bimaterial flight assembly for an elevator system for a wheel tractor scraper |
| CN104046767A (en) * | 2014-07-11 | 2014-09-17 | 攀钢集团工程技术有限公司 | Automatic thermal treatment equipment for steel balls |
| CN104164552A (en) * | 2014-08-08 | 2014-11-26 | 苏州中门子科技有限公司 | Quenching system used in steel ball production |
| CN104985094A (en) * | 2015-07-20 | 2015-10-21 | 江阴东邦钢球机械有限公司 | Steel ball rolling system |
| CN105385831A (en) * | 2015-12-17 | 2016-03-09 | 北京科技大学 | Afterheat utilization and thermal treatment device for obliquely-rolled ball-milled steel ball |
| CN105400945A (en) * | 2015-12-17 | 2016-03-16 | 北京科技大学 | Thermal treatment system for large-diameter skew rolling ball-milling steel balls |
| CN105479102A (en) * | 2015-11-19 | 2016-04-13 | 米易华星钒钛科技有限责任公司 | Manufacturing device and manufacturing method of ball mill steel ball |
| CN107586922A (en) * | 2017-09-21 | 2018-01-16 | 四川鸿舰重型机械制造有限责任公司 | The online immediate quenching technique of U71MnU75V rolling steel balls |
| CN112813247A (en) * | 2020-12-18 | 2021-05-18 | 北京科技大学 | Skew rolling ball-milling steel ball tempering device capable of utilizing waste heat |
| CN113061692A (en) * | 2021-03-22 | 2021-07-02 | 铜陵有色金神耐磨材料有限责任公司 | Normalizing pretreatment process for forged wear-resistant steel balls for mining large-scale semi-autogenous mill |
| WO2022110164A1 (en) * | 2020-11-30 | 2022-06-02 | 苏州中门子工业炉科技有限公司 | Heat treatment process for wear-resistant steel balls performed with residual heat from forging wear-resistant steel balls |
-
1985
- 1985-04-14 CN CN198585104240A patent/CN85104240A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100509209C (en) * | 2008-05-08 | 2009-07-08 | 刘机 | Steel-forged ball processing technique |
| CN103748288B (en) * | 2011-08-20 | 2016-08-24 | 卡特彼勒公司 | The scraper component of bi-material layers for the elevator system of wheeled self-propelled scraper |
| CN103748288A (en) * | 2011-08-20 | 2014-04-23 | 卡特彼勒公司 | Bimaterial flight assembly for an elevator system for a wheel tractor scraper |
| CN102382954A (en) * | 2011-11-02 | 2012-03-21 | 北京科技大学 | On-line continuous quenching device for skew-rolled ball-milled steel balls |
| CN103374651A (en) * | 2012-04-27 | 2013-10-30 | 宝山钢铁股份有限公司 | Thermal treatment method of steel coils by utilizing hot rolling residual temperature |
| CN103374651B (en) * | 2012-04-27 | 2014-10-01 | 宝山钢铁股份有限公司 | Thermal treatment method of steel coils by utilizing hot rolling residual temperature |
| CN103352107A (en) * | 2013-06-08 | 2013-10-16 | 铜陵市明诚铸造有限责任公司 | Forging-grinding-ball isothermal-control quenching device and method |
| CN103352107B (en) * | 2013-06-08 | 2016-02-17 | 铜陵市明诚铸造有限责任公司 | Temperature control quenching device and the methods such as a kind of forging abrading-ball |
| CN104046767A (en) * | 2014-07-11 | 2014-09-17 | 攀钢集团工程技术有限公司 | Automatic thermal treatment equipment for steel balls |
| CN104164552A (en) * | 2014-08-08 | 2014-11-26 | 苏州中门子科技有限公司 | Quenching system used in steel ball production |
| CN104985094A (en) * | 2015-07-20 | 2015-10-21 | 江阴东邦钢球机械有限公司 | Steel ball rolling system |
| CN105479102A (en) * | 2015-11-19 | 2016-04-13 | 米易华星钒钛科技有限责任公司 | Manufacturing device and manufacturing method of ball mill steel ball |
| CN105400945A (en) * | 2015-12-17 | 2016-03-16 | 北京科技大学 | Thermal treatment system for large-diameter skew rolling ball-milling steel balls |
| CN105385831A (en) * | 2015-12-17 | 2016-03-09 | 北京科技大学 | Afterheat utilization and thermal treatment device for obliquely-rolled ball-milled steel ball |
| CN105385831B (en) * | 2015-12-17 | 2018-02-16 | 北京科技大学 | A kind of oblique milling ball milling steel ball UTILIZATION OF VESIDUAL HEAT IN annealing device |
| CN107586922A (en) * | 2017-09-21 | 2018-01-16 | 四川鸿舰重型机械制造有限责任公司 | The online immediate quenching technique of U71MnU75V rolling steel balls |
| WO2022110164A1 (en) * | 2020-11-30 | 2022-06-02 | 苏州中门子工业炉科技有限公司 | Heat treatment process for wear-resistant steel balls performed with residual heat from forging wear-resistant steel balls |
| CN112813247A (en) * | 2020-12-18 | 2021-05-18 | 北京科技大学 | Skew rolling ball-milling steel ball tempering device capable of utilizing waste heat |
| CN113061692A (en) * | 2021-03-22 | 2021-07-02 | 铜陵有色金神耐磨材料有限责任公司 | Normalizing pretreatment process for forged wear-resistant steel balls for mining large-scale semi-autogenous mill |
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