CN106077414A - A kind of small dimension steel ball production technology - Google Patents
A kind of small dimension steel ball production technology Download PDFInfo
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- CN106077414A CN106077414A CN201610347175.9A CN201610347175A CN106077414A CN 106077414 A CN106077414 A CN 106077414A CN 201610347175 A CN201610347175 A CN 201610347175A CN 106077414 A CN106077414 A CN 106077414A
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- steel ball
- quenching
- losing
- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/02—Making machine elements balls, rolls, or rollers, e.g. for bearings
-
- 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
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
- C21D1/64—Quenching devices for bath quenching with circulating liquids
-
- 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
- C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present invention relates to a kind of small dimension steel ball production technology, described technique includes following steps: step one: get the raw materials ready, and is positioned over round steel material to be heated on storing stand；Step 2: heating, heats to round steel, step 3: shape；Forging rolling technique or direct rolling process is used to make steel ball；Step 4: conveying, utilize conveying device by Steel ball conveyor to quenching press, and during conveying, row filter is entered to steel ball, step 5: quenching, quenching unit is utilized to carry out, to the steel ball after step 4 screening conveying, the operation that quenches, step 6: insulation, carries out heat retaining operation in the steel ball after quenching is positioned over heat-preserving container；Step 7: cooling, utilizes cooling billiard table to cool down the steel ball through insulation operation, step 8: metering packing, will be cooled to the steel ball of room temperature and carries out metering packing and warehouse-in treats shipment.A kind of small dimension steel ball production technology of the present invention, production efficiency height and good product quality.
Description
Technical field
The present invention relates to the production technology of a kind of steel ball, especially relate to the steel ball of a kind of small size rule (20 ~ 40mm)
Production technology, belong to steel ball production technical field.
Background technology
At present, in the production process of small dimension steel ball, there are problems, during heating in medium frequency, carrying roller all uses
Fixed form, thus cause its regulation constant, and follow-up maintenance is inconvenient；The process that the steel ball having rolled is carried
In, the mode that common process uses is for allowing steel ball lean on inclination freely falling body, before the uncontrollable steel ball of such mode of movement enters water
Temperature, and under this kind of mode, also need the special screening machine of optional equipment to rupture underproof product get rid of, so as not to this
A little rupture product enter the stuck equipment of subsequent technique；Meanwhile, the steel ball after rolling is in quenching process, needs for every nozzle independent
Be equipped with a valve, cause water flow data cannot quantify record, when change different size steel ball after need again to do flow
Set test, cause initial quenching quality unstable, affect the hardness uniformity consistency of steel ball, and cause the quality of steel ball not
High；Further, in last cooling procedure, a large amount of steel balls are only packed together and carry out concentrating cooling by conventional technique, from
And causing the steel ball poor heat radiation at reactor core so that its temperature is too high, affects inside metallographic, so that product is consistent
Property is poor；Need a kind of brand-new technological process that can solve the problem that the problems referred to above for this badly.
Content of the invention
It is an object of the invention to overcome above-mentioned deficiency, the small dimension steel that a kind of production efficiency is high and steel ball quality is good is provided
Ball producing process.
The object of the present invention is achieved like this:
A kind of small dimension steel ball production technology, it is characterised in that: described technique includes following steps:
Step one: get the raw materials ready, is positioned over round steel material to be heated on storing stand；
Step 2: heating, heats to round steel, now utilizes support roller device to provide the round steel of heating and supports, affiliated carrying roller
Device includes rest stand, and the upper supporting roller that is set up on rest stand and snub pulley, and the round steel of above-mentioned heating is positioned at upper supporting roller
With between snub pulley, described upper supporting roller is fixed on rest stand by spring,
Step 3: shape；Forging rolling technique or direct rolling process is used to make steel ball；
Step 4: conveying, utilizes conveying device by Steel ball conveyor to quenching press, and sieves steel ball during conveying
Choosing, described conveying device includes frame, and described frame top is provided with fixing beam, is provided with propellers, institute by this fixing beam
State propellers to be fixed with frame by bearing；
Step 5: quenching, utilizes quenching unit to carry out the operation that quenches, described quenching unit to the steel ball after step 4 screening conveying
Including support, the bottom girder central hollow of described support is used as water main passage and uses, and described water main channel bottom is connected with
Water-in flange joint is intake, and described support is provided with the many groups aqua storage tank being set up in parallel, described water main passage and each group
Aqua storage tank connection is for supplying water in aqua storage tank, and the centre of described aqua storage tank is placed with a U-shaped quenching tank, sets in aqua storage tank
It is equipped with multiple nozzle water spray in U-shaped quenching tank, be wherein provided with metering valve with a scale on each nozzle；
Step 6: insulation, carries out heat retaining operation in the steel ball after quenching is positioned over heat-preserving container；
Step 7: cooling, utilizes cooling billiard table to cool down the steel ball through insulation operation, and described cooling billiard table includes material
Storehouse, described feed bin top is of an inclined plane setting, and described feed bin is divided into multiple independent chamber, and described feed bin top is in parallel
It is provided with one as the groove of losing of main passage of losing, had by the oblique erection of support bar above multiple separate chamber of described feed bin
The groove of losing of multiple passages of losing as branch road, the sidewall of described groove of losing has multiple gap, and this opening position is hinged with guiding
Door, and guide the width more than groove of losing for the length of door, when guiding door and opening, the steel ball in groove of losing can guide the oblique of door
To guide under fall in feed bin from the opening position of groove of losing, and above-mentioned as branch road lose passage groove of losing top score
End is arranged at the opening position of the above-mentioned groove of losing as main passage of losing, so that carried, by main passage of losing, the steel ball coming
Can distribute to different branch roads and lose in passage.
Step 8: metering packing, will be cooled to the steel ball of room temperature and carries out metering packing and warehouse-in treats shipment.
A kind of small dimension steel ball production technology of the present invention, in step 2, described rest stand top be provided with one vertical to
Under upper card column, the central shaft of described upper supporting roller is set with a lower card column vertically upward, the two ends of above-mentioned spring are inserted respectively
It is placed in card column and lower card column, thus when working, by the elastic force of spring, carrying roller can be contacted in round steel, when needs dismounting
When, the lower upper supporting roller of spring dismounting can be removed easily, then convenient by snub pulley dismounting again.
A kind of small dimension steel ball production technology of the present invention, in step 4, described propellers are by being arranged in frame
Propellers warp-wise adjuster comes the gap between adjustable screw roller and fixing beam, such that it is able to sieve the steel ball of different size
Choosing, the end of described propellers is provided with out ball guide groove, and the end going out ball guide groove is positioned at the top of water, the front end of described propellers
It is connected with variable-frequency motor, by variable-frequency motor stepless control steel ball time of delivery on a conveyor, finally meet steel ball and enter
The temperature of water.
A kind of small dimension steel ball production technology of the present invention, in step 5, metering valve with a scale can make discharge reach
Quantifying record, the end of described U-shaped quenching tank is fixed with frame by the support of bearing, and described U-shaped quenching tank is provided with
Quenching stirring cage, for placing steel ball to be quenched in this quenching stirring cage；Various nozzle is carried out by the quenching unit of this steel ball
Packet is supplied water, and often organizes in aqua storage tank and is equipped with cup scale metered valve, discharge can be made to realize quantifying record, it is simple to when reusing
Quenching quality controllable, thus meet the hardness uniformity consistency of steel ball, improve the quality of steel ball.
A kind of small dimension steel ball production technology of the present invention, in step 7, available air cylinder driven guides door, now cylinder
Being positioned at the bottom of groove of losing, the bearing pin guiding door side is inserted in the pin-and-hole of groove opening position of losing, and trench bottom of losing is hinged with
One rocking arm, this one end is connected with guiding door, and the other end is connected with the piston rod of cylinder.
A kind of small dimension steel ball production technology of the present invention, in the gas circuit of cylinder, the Valve controlling of setting is in same PLC circuit,
Now, by electrical control, can easily guiding door be controlled so that steel ball can fall to pile up accordingly easily
Less cartridge chamber is indoor, it is to avoid steel ball causes reactor core steel ball temperature too high because of accumulation.
Compared with prior art, the invention has the beneficial effects as follows:
Support roller device convenient disassembly used in the present invention, it is simple to maintenance；Further, conveying device allows steel ball operationally edge all the time
Helicla flute makees uniform motion, it is possible to reject thoroughly to incomplete steel ball, it is to avoid incomplete steel ball blocks quenching press after entering quenching tank
Tool causes fault, such that it is able to enter row filter to steel ball easily, secondly the coolant-temperature gage that enters of hot steel ball can be by variable-frequency motor
Control, serves vital effect to the quenching quality of steel ball, effectively raises the quality of steel ball indirectly；Meanwhile, quench
Various nozzle is carried out packet and supplies water by fire device, often organizes in aqua storage tank and is equipped with cup scale metered valve, discharge can be made to realize
Quantify record, it is simple to quenching when reusing is quality controllable, thus meets the hardness uniformity consistency of steel ball, improves steel
The quality of ball；Finally, carry out carrying out triage operator to steel ball by the groove of losing on cooling billiard table, it is to avoid steel ball is piled up, thus
The too high situation of core temperature will not be produced, greatly improve the quality of steel ball product.
Brief description
Fig. 1 support roller device used when being to heat in the present invention a kind of small dimension steel ball production technology.
Fig. 2 is the structural representation of the conveying device in the present invention a kind of small dimension steel ball production technology.
Fig. 3 is the structural representation of quenching unit in the present invention a kind of small dimension steel ball production technology.
Fig. 4 is the side view of quenching unit in the present invention a kind of small dimension steel ball production technology.
Fig. 5 is the top view cooling down billiard table in the present invention a kind of small dimension steel ball production technology.
Fig. 6 is the side view cooling down billiard table in the present invention a kind of small dimension steel ball production technology.
Fig. 7 is the structural representation of the groove of losing cooling down billiard table in the present invention a kind of small dimension steel ball production technology.
Wherein:
Rest stand the 1.1st, upper supporting roller the 1.2nd, snub pulley the 1.3rd, spring the 1.4th, lower card column the 1.5th, upper card column 1.6；
The 2.2nd, frame the 2.1st, propellers are fixed beam the 2.3rd, propellers warp-wise adjuster and the 2.4th, are gone out ball guide groove the 2.5th, variable-frequency motor 2.6；
Support the 3.1st, water-in flange joint the 3.2nd, aqua storage tank the 3.3rd, the support of bearing the 3.4th, U-shaped quenching tank the 3.5th, metering valve with a scale
3.6th, quench stirring cage the 3.7th, water main passage 3.8；
The 4.3rd, feed bin the 4.1st, groove the 4.2nd, support bar of losing guides door 4.4.
Detailed description of the invention
See Fig. 1 ~ 7, a kind of small dimension steel ball production technology that the present invention relates to, described technique includes following steps:
Step one: get the raw materials ready, is positioned over round steel material to be heated on storing stand；
Step 2: heating, heats to round steel, now utilizes support roller device to provide the round steel of heating and supports, affiliated carrying roller
Device includes rest stand 1.1, the upper supporting roller 1.2 being set up on rest stand 1.1 and snub pulley 1.3, the round steel position of above-mentioned heating
Between upper supporting roller 1.2 and snub pulley 1.3, described upper supporting roller 1.2 is fixed on rest stand 1.1 by spring 1.4, concrete
Saying, described rest stand 1.1 top is provided with a upper card column 1.6 vertically downwards, and the central shaft of described upper supporting roller 1.2 is set with
One lower card column 1.5 vertically upward, the two ends of above-mentioned spring 1.4 are inserted in card column 1.6 and lower card column 1.5 respectively, thus
During work, by the elastic force of spring 1.4, carrying roller can be contacted in round steel, when disassembly is desired, spring 1.4 can be removed easily
Snub pulley 1.3 then convenient is again removed by the lower upper supporting roller 1.2 of dismounting；
Step 3: shape；Forging rolling technique or direct rolling process is used to make steel ball；
Step 4: conveying, utilizes conveying device by Steel ball conveyor to quenching press, and sieves steel ball during conveying
Choosing, to prevent the steel ball of breakage from entering quenching press, described conveying device includes frame 2.1, and described frame 2.1 top is provided with
Fixing beam 2.3, the other propellers 2.2 that are provided with of this fixing beam 2.3, described propellers 2.2 are fixing with frame 2.1 by bearing, institute
State propellers 2.2 and come adjustable screw roller 2.2 and fixing beam 2.3 by the propellers warp-wise adjuster 2.4 being arranged in frame 2.1
Between gap, such that it is able to enter row filter to the steel ball of different size, the end of described propellers 2.2 is provided with out ball guide groove
2.5, the end going out ball guide groove 2.5 is positioned at the top of water, and the front end of described propellers 2.2 is connected with variable-frequency motor 2.6, by frequency conversion
Motor 2.6 stepless control steel ball time of delivery on a conveyor, finally meets steel ball and enters the temperature of water；
Step 5: quenching, utilizes quenching unit to carry out the operation that quenches, described quenching unit to the steel ball after step 4 screening conveying
Including support 3.1, the bottom girder central hollow of described support 3.1 is used as water main passage 3.8 and uses, described water main passage
It is connected with water-in flange joint 3.2 bottom 3.8 to intake, described support 3.1 is provided with the many groups aqua storage tank 3.3 being set up in parallel,
Described water main passage 3.8 connects for supplying water in aqua storage tank 3.3 with each group of aqua storage tank 3.3, the centre of described aqua storage tank 3.3
It is placed with a U-shaped quenching tank 3.5, be provided with multiple nozzle water spray in U-shaped quenching tank 3.5 in aqua storage tank 3.3, wherein
Being provided with metering valve 3.6 with a scale on each nozzle, this metering valve 3.6 with a scale can make discharge reach to quantify note
Record, the end of described U-shaped quenching tank 3.5 is fixed with frame 3.1 by the support of bearing 3.4, on described U-shaped quenching tank 3.5
It is provided with quenching stirring cage 3.7, for placing steel ball to be quenched in this quenching stirring cage 3.7；The quenching unit of this steel ball is by numerous
Many nozzles carry out packet and supply water, and often organize in aqua storage tank and are equipped with cup scale metered valve, and discharge can be made to realize quantifying record, just
Quenching when reusing is quality controllable, thus meets the hardness uniformity consistency of steel ball, improves the quality of steel ball；
Step 6: insulation, carries out heat retaining operation in the steel ball after quenching is positioned over heat-preserving container；
Step 7: cooling, utilizes cooling billiard table to cool down the steel ball through insulation operation, and described cooling billiard table includes material
Storehouse 4.1, described feed bin 4.1 top is of an inclined plane setting, and described feed bin 4.1 is divided into multiple independent chamber, described feed bin 4.1
Top is in parallel to be provided with one as the groove 4.2 of losing of main passage of losing, logical above multiple separate chamber of described feed bin 4.1
Crossing the oblique erection of support bar 4.3 has the groove 4.2 of losing of multiple passage of losing as branch road, and the described sidewall losing groove 4.2 has
Multiple gap, this opening position is hinged with guiding door 4.4, and the length guiding door 4.4 is more than the width of groove 4.2 of losing, and works as guiding
When door 4.4 is opened, the steel ball in groove 4.2 of losing can drop from the opening position of groove 4.2 of losing under the oblique guiding guiding door 4.4
To feed bin 4.1, and above-mentioned enter pommel and be arranged at as the lose top of groove 4.2 of losing of passage of branch road and above-mentioned lose as main
The opening position of the groove 4.2 of losing of passage, so that the steel ball being come by main passage conveying of losing can distribute to different
Lose in passage in road；Preferably, may utilize air cylinder driven and guide door 4.4, now cylinder is positioned at the bottom of groove 4.2 of losing, and guides
The bearing pin of door 4.4 sides is inserted in the pin-and-hole of groove 4.2 opening position of losing, and is hinged with a rocking arm, this rocking arm bottom groove 4.2 of losing
One end is connected with guiding door 4.4, and the other end is connected with the piston rod of cylinder, and, the valve that the gas circuit of cylinder is arranged connects
In same PLC circuit, now, by electrical control, can easily guiding door 4.4 be controlled so that steel ball can facilitate
Fall to pile up accordingly in less feed bin 4.1 chamber, it is to avoid steel ball causes reactor core steel ball temperature too high because of accumulation；
Meanwhile, by PLC integrating control, the personnel that are convenient to operation remotely monitor, in operating room can by electrical equipment connect into
The corresponding control of row, it is not necessary to arrange substantial amounts of operating personnel to carry out field operation；
Step 8: metering packing, will be cooled to the steel ball of room temperature and carries out metering packing and warehouse-in treats shipment；
Additionally: it should be noted that above-mentioned detailed description of the invention is only a prioritization scheme of this patent, those skilled in the art
Member according to above-mentioned design done any change or improve, all within the protection domain of this patent.
Claims (6)
1. a small dimension steel ball production technology, it is characterised in that: described technique includes following steps:
Step one: get the raw materials ready, is positioned over round steel material to be heated on storing stand；
Step 2: heating, heats to round steel, now utilizes support roller device to provide the round steel of heating and supports, affiliated carrying roller
Device includes rest stand (1.1), the upper supporting roller (1.2) being set up on rest stand (1.1) and snub pulley (1.3), above-mentioned heating
Round steel be positioned between upper supporting roller (1.2) and snub pulley (1.3), described upper supporting roller (1.2) is fixed on is shelved by spring (1.4)
On frame (1.1),
Step 3: shape；Forging rolling technique or direct rolling process is used to make steel ball；
Step 4: conveying, utilizes conveying device by Steel ball conveyor to quenching press, and sieves steel ball during conveying
Choosing, described conveying device includes frame (2.1), and described frame (2.1) top is provided with fixing beam (2.3), this fixing beam
(2.3) side is provided with propellers (2.2), and described propellers (2.2) are fixed with frame (2.1) by bearing；
Step 5: quenching, utilizes quenching unit to carry out the operation that quenches, described quenching unit to the steel ball after step 4 screening conveying
Including support (3.1), the bottom girder central hollow of described support (3.1) is used as water main passage (3.8) and uses, described main water
Tube passage (3.8) bottom is connected with water-in flange joint (3.2) and intakes, described support (3.1) is provided be set up in parallel many
Group aqua storage tank (3.3), described water main passage (3.8) connects with each group of aqua storage tank (3.3) for supplying in aqua storage tank (3.3)
Water, the centre of described aqua storage tank (3.3) is placed with U-shaped quenching tank (3.5), and aqua storage tank is provided with multiple spray in (3.3)
Mouth water spray in U-shaped quenching tank (3.5), is wherein provided with metering valve with a scale (3.6) on each nozzle；
Step 6: insulation, carries out heat retaining operation in the steel ball after quenching is positioned over heat-preserving container；
Step 7: cooling, utilizes cooling billiard table to cool down the steel ball through insulation operation, and described cooling billiard table includes material
Storehouse (4.1), described feed bin (4.1) top is of an inclined plane setting, and described feed bin (4.1) is divided into multiple independent chamber, described
Feed bin (4.1) top is in parallel to be provided with one as the groove of losing (4.2) of main passage of losing, described feed bin (4.1) multiple
There is the groove of losing (4.2) of multiple passage of losing as branch road by the oblique erection of support bar (4.3) above separate chamber, described defeated
The sidewall of ball groove (4.2) has multiple gap, and this opening position is hinged with guiding door (4.4), and the length guiding door (4.4) is more than
Losing the width of groove (4.2), when guiding door (4.4) and opening, the steel ball in groove of losing (4.2) can guide the oblique of door (4.4)
Fall in feed bin (4.1) from the opening position of groove of losing (4.2) under guiding, and the groove of losing of above-mentioned passage of losing as branch road
(4.2) opening position that pommel is arranged at the above-mentioned groove of losing (4.2) as main passage of losing is entered at top, so that defeated by master
The ball passage steel ball that comes of conveying can distribute to different branch roads loses in passage；
Step 8: metering packing, will be cooled to the steel ball of room temperature and carries out metering packing and warehouse-in treats shipment.
2. a kind of small dimension steel ball production technology as claimed in claim 1, it is characterised in that: in step 2, described rest stand
(1.1) top is provided with a upper card column (1.6) vertically downwards, the central shaft of described upper supporting roller (1.2) is set with one vertical
Lower card column (1.5) upwards, the two ends of above-mentioned spring (1.4) are inserted in card column (1.6) and lower card column (1.5) respectively, from
And when working, by the elastic force of spring (1.4), carrying roller can be contacted in round steel, when disassembly is desired, bullet can be removed easily
The lower upper supporting roller (1.2) of spring (1.4) dismounting, then convenient by snub pulley (1.3) dismounting again.
3. a kind of small dimension steel ball production technology as claimed in claim 1, it is characterised in that: in step 4, described propellers
(2.2) propellers warp-wise adjuster (2.4) by being arranged in frame (2.1) come adjustable screw roller (2.2) and fixing beam
(2.3) gap between, such that it is able to enter row filter to the steel ball of different size, the end of described propellers (2.2) is provided with
Going out ball guide groove (2.5), the end going out ball guide groove (2.5) is positioned at the top of water, the front end of described propellers (2.2) and variable-frequency motor
(2.6) it is connected, by variable-frequency motor (2.6) stepless control steel ball time of delivery on a conveyor, finally meet steel ball and enter
The temperature of water.
4. a kind of small dimension steel ball production technology as claimed in claim 1, it is characterised in that: in step 5, metering with a scale
Valve (3.6) can make discharge reach quantify record, described U-shaped quenching tank (3.5) end by the support of bearing (3.4) with
Frame (3.1) is fixed, and described U-shaped quenching tank (3.5) is provided with quenching stirring cage (3.7), is used in this quenching stirring cage (3.7)
Place steel ball to be quenched；Various nozzle is carried out packet and supplies water by the quenching unit of this steel ball, often organizes in aqua storage tank and is all provided with
There is cup scale metered valve, discharge can be made to realize quantifying record, it is simple to quenching when reusing is quality controllable, thus meets
The hardness uniformity consistency of steel ball, improves the quality of steel ball.
5. a kind of small dimension steel ball production technology as claimed in claim 1, it is characterised in that: in step 7, available cylinder
Driving and guiding door (4.4), now cylinder is positioned at the bottom of groove of losing (4.2), and the bearing pin of guiding door (4.4) side is inserted in loses
In the pin-and-hole of groove (4.2) opening position, groove of losing (4.2) bottom is hinged with a rocking arm, this one end and guiding door (4.4) phase
Even, the other end is connected with the piston rod of cylinder.
6. a kind of small dimension steel ball production technology as claimed in claim 5, it is characterised in that: the valve arranging in the gas circuit of cylinder
It is controlled in same PLC circuit, now, by electrical control, can easily guiding door (4.4) be controlled so that steel ball energy
Enough fall to easily pile up accordingly in less feed bin (4.1) chamber, it is to avoid steel ball causes reactor core steel ball because of accumulation
Temperature is too high.
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| CN201610347175.9A CN106077414B (en) | 2016-05-24 | 2016-05-24 | A kind of small dimension steel ball production technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109234505A (en) * | 2018-11-09 | 2019-01-18 | 平湖市法埃斯铝制品有限公司 | A kind of water hardening cooling device of aluminium sheet |
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Denomination of invention: A Small Specification Steel Ball Production Process Effective date of registration: 20230918 Granted publication date: 20171229 Pledgee: Jiangsu Jiangyin Rural Commercial Bank Co.,Ltd. Huaxi Branch Pledgor: JIANGYIN HUAZHENG METAL TECHNOLOGY CO.,LTD. Registration number: Y2023980057148 |
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