CN207479478U - A kind of ball rolling system - Google Patents
A kind of ball rolling system Download PDFInfo
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- CN207479478U CN207479478U CN201721540831.3U CN201721540831U CN207479478U CN 207479478 U CN207479478 U CN 207479478U CN 201721540831 U CN201721540831 U CN 201721540831U CN 207479478 U CN207479478 U CN 207479478U
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Abstract
The utility model is related to a kind of ball rolling systems, it includes the heating arrangements (1) being sequentially arranged, rolling mechanism (2), first hoisting mechanism (3), sieve ball machine structure (4), slow cooling mechanism (5), spiral quenching mechanism (9), second hoisting mechanism (10), material-feeding mechanism (11), air cooling mechanism (12), tempering heating arrangements (13), cooling structure (14) and automatic ball feeding machine structure (15).A kind of ball rolling system of the utility model and its rolling mill practice, quenched steel ball is uniformly sent into air cooling mechanism by material-feeding mechanism and carries out air-cooled cooling by it, so as to increase the transformation amount of martensite in steel ball, improve steel ball surface and core hardness, increase steel ball wearability, the steel ball service life is improved, and steel ball is less prone to cracking phenomena.
Description
Technical field
The utility model is related to a kind of ball rolling systems, belong to steel ball and prepare production technical field.
Background technology
At present, the steel ball mode of production generally has forging, four major class of rolling, semi-solid forming and casting；Due to the usage of trade
And be limited to use condition, integrated environment and the background of some special occasions such as mining processing industry, the conventional steel ball mode of production with
Forging occupies sizable ratio with rolling ball.
Among these, hot rolling steel ball is the manufacturing technology of ball milling steel ball as a kind of completely new Bar Rolling Process
It breaks through, gradually substitutes forged steel ball, compared with the modes such as forging, hot rolling steel ball technique has the characteristics that：
1st, hot rolling mode production efficiency is high, yield is big, rolls that ball production mechanization, the degree of automation are high, and employment is few, it is believed that
Factor interferes small, stable quality；
2nd, hardness is high, quenching degree is good, metallographic structure is fine and close, crystal grain is tiny, indeformable, steel ball will not deform from the beginning to the end,
Circle is not lost, wear-resisting property is good, and impact flexibility is up to 12~35J/cm2, percentage of damage is less than 1%；
3rd, low energy consumption, pollution-free, labor intensity is low, production cost is relatively low；
4th, forming, geometric tolerances are small, stable quality；
5th, low wear rate, service life is long, be existing casting iron ball, 2~5 times of forged steel ball, and price is suitable；
6th, steel ball integral hardness is high, and case hardness can reach 55~65HRC, and volume hardness reaches 50~62HRC, inside and outside
Hardness is balanced, difference of hardness<5HRC, and hardness gradient is evenly distributed；
7th, impact flexibility is up to 12~35J/cm2；
8th, percentage of damage is low：Anti- 10 times or more for shelling broken and crush resistance and being general casting forged steel ball, ball falling impact number 20,000
More than secondary, practical percentage of damage is no more than 1%, close to without broken；
Based on above-mentioned advantage, hot rolling steel ball product is in all kinds of black and nonferrous metal mine ore dressing plant, thermal power plant, water
The industries such as mud factory, refractory factory are used widely, by the consistent favorable comment of domestic and international client.
Conventional hot-rolled steel ball producing process is generally using forging (rolling) steel ball iron and steel industry professional standard (YB/T 091-
2005) professional production various specifications hot rolling ball milling steel ball, steel ball size ranging from 25~￠ of ￠ 125mm, rolling ball milling steel ball are adopted
Blank is the hot rolled circular steel stick of various chemical compositions, and diameter is equal with steel ball nominal diameter；Conventional hot rolling steel ball master
Want the technological process of production as follows：
Step 1: round steel bar cuts into steel ball blank after inspection, by cut lengths；
Step 2: steel ball blank is heated to suitable temperature in continuous-type furnace before the rolling；
Step 3: after the steel billet of red heat state is admitted to hot-rolling mill, between two rolls with special spiral shape pass
It is rotationally advancing, and is continuously rolled into steel ball；
It carries out quenching-tempering heat treatment Step 4: the red heat state steel ball after rolling into immediately enters Equipment for Heating Processing, makes steel ball
Obtain very high and uniform hardness；
Step 5: through qualified product is examined to be sent to finished room, client is sent to after being packed.
But found through actual production, exist simultaneously the problem of following prominent during above-mentioned production hot rolling steel ball：Step
Rapid three front end lacks quantitative mechanism, so as to realize the rhythm of production of steady rate；Quenching apparatus in step 4 is more fallen
Afterwards, lead to its energy consumption height, quenching efficiency is poor, therefore there is an urgent need for improve；Meanwhile lack corresponding machinery makeup ball after the completion of step 5
Mechanism, using manual type not only inefficient, and increasingly increased recruitment cost greatly increases the production cost of enterprise.
Utility model patent application No. is 201510427539.X discloses a kind of ball rolling technique, it passes through startup
Quantitative mechanism ensures that only there are one steel balls in each slot of spiral quenching mechanism helical axis, ensure that quenching quality；Spiral is quenched
Lighter structure is by the setting of media slot, so that a pipeline is only needed to be connected with medium manifold so that entire mechanism structure
Simpler, the media port of horn-like design causes pressure medium bigger, can effectively impact the steel ball in housing, and raising is quenched
Fiery effect；It is designed by not equidistant media port so that the steel ball of different phase can obtain the quenching of different flow on demand
Medium further improves quenching effect；Automatic ball feeding machine structure is discharged by funnelform loading head, and passes through discharged oil
Its discharging of cylinder controller, while efficient bulb separation is carried out, and carry out essence by translation conveyors of weighing by ratary disk type direct through-connection equipment
Really metering, whole process automatic control, not only efficient and metering is accurate, solves the above problem well.But
In above-mentioned patented technology, the steel ball after hot-roll forming carries out primary quenching using spiral quenching mechanism first, due to primary quenching
Steel ball leaving water temperature is higher afterwards, and to the steel ball of more than diameter 60mm its austenite transformation martensite, fully transformation is completed not yet,
Cause steel ball core hardness insufficient, at this time steel ball performance can be caused to substantially reduce into tempering furnace tempering, thus also need into
Row secondary quenching.Although extending the cool time during secondary quenching, steel ball leaving water temperature can be down to 80 DEG C or so, so as to increase
Add the martensite transfor mation amount in steel ball, improve steel ball surface and core hardness, increase steel ball wearability, improve the steel ball service life.But
It is that secondary quenching is more demanding to steel ball material, when secondary quenching extends the cool time, steel ball is easily gone out by water rapid cooling
Existing cracking phenomena；In addition secondary quenching using a kind of water-soluble polymer aqueous solution as medium, cooling velocity between
Between water, oil, but this water-soluble medium is there are certain environmental pollution, with the present that environmental protection situation is increasingly serious
My god, this technique is also gradually being eliminated.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of ball rolling system for the above-mentioned prior art, it
Quenched steel ball is uniformly sent by air cooling mechanism by material-feeding mechanism and carries out air-cooled cooling, so as to increase martensite in steel ball
Transformation amount improves steel ball surface and core hardness, increases steel ball wearability, improves the steel ball service life, and steel ball is less prone to cracking
Phenomenon.
The technical scheme in the invention for solving the above technical problem is：A kind of ball rolling system, it is included successively
The heating arrangements of arrangement, rolling mechanism, first hoisting mechanism, sieve ball machine structure, slow cooling mechanism, spiral quenching mechanism, the second promotion
Mechanism, material-feeding mechanism, air cooling mechanism, tempering heating arrangements, cooling structure and automatic ball feeding machine structure.
Conveying load carrier is provided between the material-feeding mechanism and slow cooling mechanism.
Web plate is provided with below the conveying load carrier, circular hole is uniformly provided on web plate.
The slow cooling mechanism uses parallel-moving type conveying mechanism, and the parallel-moving type conveying mechanism uses S-shaped or snakelike coiling side
Formula.
The spiral quenching mechanism uses the form of interior stirring cage.
Complete cooling device is provided on front side of the tempering heating arrangements.
A kind of rolling mill practice of ball rolling system, the technique include the following steps：
Step 1: stock；
Step 2: heating：Raw material enter heating arrangements and are heated to rolling required temperature；
Step 3: rolling：Raw material after heating enter rolling mechanism and are rolled into steel ball；
Step 4: sieve ball：The steel ball of roll forming is after first hoisting mechanism is promoted, and using sieving, the deletion of ball machine structure is bad
Product；
Step 5: slow cooling：The non-defective unit screened through sieving ball machine structure carries out slow cooling on parallel-moving type conveying mechanism；
Step 6: quenching：Steel ball by parallel-moving type conveying mechanism slow cooling enters spiral quenching mechanism and is quenched, and passes through
Steel ball temperature is reduced to 125~145 DEG C by quenching；
Preferably, spiral quenching press uses interior stirring cage form；
It is Step 7: air-cooled：Steel ball by quenching is promoted to material-feeding mechanism through second hoisting mechanism, and material-feeding mechanism is by steel ball
It is uniformly sent into air cooling mechanism and carries out air-cooled cooling, steel ball temperature is reduced to 50 DEG C~room temperature by air-cooled；
Step 8: tempering：Enter tempering heating arrangements by air-cooled steel ball and carry out temper；
Step 9: cooling：Steel ball enters cooling body and is cooled down after tempering；
Step 10: dress ball：Steel ball after cooling enters automatic ball feeding machine structure into luggage ball.
Connection between cooling body and tempering heating arrangements is using free landing mode or chain low between the senior middle school of both sides
Promote distributing mode.
Before step 8 is carried out, can first will be air-cooled after steel ball be sent into complete cooling device and cooled down completely, wait steel balls
It is promoted to tempering heating arrangements after cooling again completely and carries out temper.
Air cooling mechanism is cooled down using natural wind, is purged in stove from outdoor extraction room temperature natural wind by wind turbine, in stove
The hot wind for having temperature is discharged to outdoor, the purging recycled in this way so that steel ball temperature slowly declines, and achievees the effect that cooling；
Or natural wind, in the exchange interaction down regulation inlet air temperature of heat exchanger, will be purged into wind by heat exchanger
Temperature is adjusted to best suitable temperature.
Compared with prior art, the utility model has the advantage of：
A kind of ball rolling system of the utility model, quenched steel ball is uniformly sent into Air cooler by it by material-feeding mechanism
Structure carries out air-cooled cooling, so as to increase the transformation amount of martensite in steel ball, improves steel ball surface and core hardness, it is resistance to increase steel ball
Mill property improves the steel ball service life, and steel ball is less prone to cracking phenomena.
Description of the drawings
Fig. 1 is a kind of process flow diagram of ball rolling system of the utility model.
Wherein：
Heating arrangements 1
Rolling mechanism 2
First hoisting mechanism 3
Sieve ball machine structure 4
Slow cooling mechanism 5
Distributor box 6
Speed reducer 7
Main motor 8
Spiral quenching mechanism 9
Second hoisting mechanism 10
Material-feeding mechanism 11
Air cooling mechanism 12
It is tempered heating arrangements 13
Cooling body 14
Automatic ball feeding machine structure 15
Complete cooling device 16.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing embodiment.
As shown in Figure 1, a kind of ball rolling system in the present embodiment, it includes the heating arrangements 1 being sequentially arranged, rolling
Mechanism 2, first hoisting mechanism 3, sieve ball machine structure 4, slow cooling mechanism 5, spiral quenching mechanism 9, second hoisting mechanism 10, material-feeding mechanism
11st, air cooling mechanism 12, tempering heating arrangements 13, cooling structure 14 and automatic ball feeding machine structure 15；
Conveying load carrier is provided between the material-feeding mechanism 11 and slow cooling mechanism 15；
The conveying load carrier includes multigroup chain, and the tie point of chain link and chain link sets pulley in every group of chain, more
It is connected in series between the chain link of group chain by round steel, is equipped with slideway below the pulley of chain, the steel ball above entire chain
Bearing capacity is moved forwards into line carrier, and steel ball tolerable injury level direction movement on conveying load carrier will not cause conveying to carry
Mechanism local subsidence steel ball is stacked upon；
The conveying load carrier includes two chains in left and right, is connected between two chains in left and right by round steel；
Web plate is provided with below the conveying load carrier, circular hole is uniformly provided on web plate, the effect of circular hole is the bottom of for
Under cold wind purging steel ball；
Using the conveying mechanism of parallel-moving type, length is longer, and S-shaped or snakelike coiled fashion can be used for the slow cooling mechanism 5
Increase its delivered length in limited floor space；
The spiral quenching mechanism 9 uses the form of interior stirring cage；
13 front side of tempering heating arrangements is provided with complete cooling device 16；
Its rolling mill practice includes the following steps：
Step 1: stock：Raw material steel grade is determined according to required end properties, and raw material are determined according to heating furnace specification
Cut lengths determines rolling required temperature according to end properties；
Step 2: heating：Raw material enter heating arrangements and are heated to rolling required temperature；
Step 3: rolling：Raw material after heating enter rolling mechanism and are rolled into steel ball；
Step 4: sieve ball：The steel ball of roll forming is after first hoisting mechanism is promoted, and using sieving, the deletion of ball machine structure is bad
Product；
Step 5: slow cooling：The non-defective unit screened through sieving ball machine structure carries out slow cooling on parallel-moving type conveying mechanism；
Step 6: quenching：Steel ball by parallel-moving type conveying mechanism slow cooling enters spiral quenching mechanism and is quenched, and passes through
Steel ball temperature is reduced to 125~145 DEG C by quenching；
Preferably, spiral quenching press uses interior stirring cage form；
It is Step 7: air-cooled：Steel ball by quenching is promoted to material-feeding mechanism through second hoisting mechanism, and material-feeding mechanism is by steel ball
It is uniformly sent into air cooling mechanism and carries out air-cooled cooling, steel ball temperature is reduced to 50 DEG C~room temperature by air-cooled；
Material-feeding mechanism come out steel ball by conveying load carrier send to air cooling mechanism carry out it is air-cooled or translation freely roll to
Air cooling mechanism carries out air-cooled；
Air cooling mechanism can be cooled down using natural wind, be purged in stove from outdoor extraction room temperature natural wind by wind turbine,
The hot wind for having temperature in stove is discharged to outdoor, the purging recycled in this way so that steel ball temperature slowly declines, and reaches the effect of cooling
Fruit, the speed and air quantity of wind turbine can be adjusted arbitrarily；
Air cooling mechanism can also by natural wind by heat exchanger, heat exchanger exchange interaction down regulation into wind-warm syndrome
Degree, the temperature for purging wind is adjusted to best suitable temperature；
Air cooling mechanism blowing mouth point multiple regions purge, and have the air outlet of multiple regions；
Air cooling mechanism can not fill air-introduced machine discharge indoors or hot wind is drawn and is discharged into outdoor by installation air-introduced machine outward；
Step 8: tempering：Enter tempering heating arrangements by air-cooled steel ball and carry out temper；
Connection between cooling body and tempering heating arrangements is using free landing mode or chain low between the senior middle school of both sides
Promote distributing mode；
Before step 8 is carried out, can first will be air-cooled after steel ball be sent into complete cooling device and cooled down completely, wait steel balls
It is promoted to tempering heating arrangements after cooling again completely and carries out temper；
Step 9: cooling：Steel ball enters cooling body and is cooled down after tempering；
Step 10: dress ball：Steel ball after cooling enters automatic ball feeding machine structure into luggage ball.
Steel ball will appear cracking when primary quenching to less than 130 degree water outlet steel balls, and austenite changes martensite
380 degree just change, and just stop below -50 degree, therefore the primary quenching transformation temperature difference only has 250 degree；Horse is changed for austenite
The more performances of family name's body are better, and the utility model carries out secondary cooling by air-cooled mode to steel ball, by adjusting intake velocity
The cooling velocity of steel ball can be adjusted, there are no pollution to the environment, and (secondary quenching is less than 80 degree than twice quenched performance higher
Will appear cracking phenomena), steel ball temperature can be reduced to 50 degree and all will not cracking to room temperature, steel ball martensite transfor mation can be improved
Ratio, improves the performance of steel ball, and disclosure satisfy that the requirement of consecutive production.
In addition to the implementation, the utility model has further included other embodiment, all to use equivalents or equivalent
The technical solution that alternative is formed, should all fall within the protection domain of the utility model claims.
Claims (9)
1. a kind of ball rolling system, it is characterised in that：It includes the heating arrangements (1) being sequentially arranged, rolling mechanism (2), the
One hoisting mechanism (3), sieve ball machine structure (4), slow cooling mechanism (5), spiral quenching mechanism (9), second hoisting mechanism (10), material distributing machine
Structure (11), air cooling mechanism (12), tempering heating arrangements (13), cooling structure (14) and automatic ball feeding machine structure (15).
2. a kind of ball rolling system according to claim 1, it is characterised in that：The material-feeding mechanism (11) and slow cooling machine
Structure is provided with conveying load carrier between (15).
3. a kind of ball rolling system according to claim 2, it is characterised in that：The conveying load carrier includes multigroup
Chain, the tie point of chain link and chain link setting pulley in every group of chain are connected in series with by round steel between the chain link of multigroup chain,
Slideway is equipped with below the pulley of chain.
4. a kind of ball rolling system according to claim 2, it is characterised in that：The conveying load carrier includes left and right
Two chains, left and right two chains between connected by round steel.
5. a kind of ball rolling system according to claim 3 or 4, it is characterised in that：Below the conveying load carrier
Web plate is provided with, circular hole is uniformly provided on web plate.
6. a kind of ball rolling system according to claim 1, it is characterised in that：The slow cooling mechanism (5) is using translation
Formula conveying mechanism.
7. a kind of ball rolling system according to claim 6, it is characterised in that：The parallel-moving type conveying mechanism uses S
Shape or snakelike coiled fashion.
8. a kind of ball rolling system according to claim 1, it is characterised in that：The spiral quenching mechanism (9) uses
The form of interior stirring cage.
9. a kind of ball rolling system according to claim 1, it is characterised in that：On front side of the tempering heating arrangements (13)
It is provided with complete cooling device (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721540831.3U CN207479478U (en) | 2017-11-17 | 2017-11-17 | A kind of ball rolling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721540831.3U CN207479478U (en) | 2017-11-17 | 2017-11-17 | A kind of ball rolling system |
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| CN207479478U true CN207479478U (en) | 2018-06-12 |
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ID=62474114
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044004A (en) * | 2017-11-17 | 2018-05-18 | 江阴东邦钢球机械有限公司 | A kind of ball rolling system and its rolling mill practice |
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2017
- 2017-11-17 CN CN201721540831.3U patent/CN207479478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044004A (en) * | 2017-11-17 | 2018-05-18 | 江阴东邦钢球机械有限公司 | A kind of ball rolling system and its rolling mill practice |
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