CN109746268A - A kind of monolithic band intelligence deep cooling experimental mill and milling method with tension - Google Patents
A kind of monolithic band intelligence deep cooling experimental mill and milling method with tension Download PDFInfo
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- CN109746268A CN109746268A CN201910040401.2A CN201910040401A CN109746268A CN 109746268 A CN109746268 A CN 109746268A CN 201910040401 A CN201910040401 A CN 201910040401A CN 109746268 A CN109746268 A CN 109746268A
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- cooling
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Abstract
A kind of monolithic band intelligence deep cooling experimental mill with tension, including rolling-mill housing and insulating box, rolled piece is monolithic band, using the traffic direction of rolled piece as left and right directions, the left side cabinet and right side cabinet of insulating box are symmetrically fastened in rolling-mill housing from the left and right sides, the support roller and working roll for making milling train are located in case, setting left side workbench in the cabinet of left side, hydraulically operated fixture one is provided on the workbench of left side, setting right side workbench in the cabinet of right side, hydraulically operated fixture two is provided on the workbench of left side, the both ends of rolled piece are clamped by hydraulically operated fixture one and hydraulically operated fixture two respectively, entrance and gas vent are provided on left side cabinet and right side cabinet, cooling gas and lubricating fluid input channel enter in case from entrance and gas vent, connection is located at cooling gas and lubrication nozzle for liquid at roll gap entrance, the present invention can be effective The usage amount of liquid nitrogen or cooling nitrogen is reduced, while can realize that band tension deep cooling rolls, and guarantees that roll work is constantly in cryogenic.
Description
Technical field
The invention belongs to metal material rolling technical field, in particular to a kind of monolithic band intelligence deep cooling with tension is real
Inspecting rolling machine and milling method.
Background technique
Ultrafine grain metal material obtained the extensive concern of academia and engineering circles between more than 20 years of past, and people have opened greatly
The large plastometric set method of amount goes to study and prepare ultrafine grain metal material.Wherein, deep cooling rolling is wherein one of method.Deep cooling
Rolling cools down rolled piece using liquid nitrogen or nitrogen, is then rolled at once.Meanwhile roll is carried out using nitrogen cold
But.It is carried out in cooling procedure however, directlying adopt nitrogen under atmospheric environment now, nitrogen volatilizees at once, causes the energy a large amount of
Waste substantially increases the manufacturing cost of deep cooling rolling.In addition, as the conventionally employed coiled material of deep cooling rolling experiment is rolled
System, this causes biggish waste for laboratory research.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the monolithic band intelligence with tension that the purpose of the present invention is to provide a kind of
Energy deep cooling experimental mill and milling method can be effectively reduced the usage amount of liquid nitrogen or cooling nitrogen, equally may be implemented
Rolling with (stock) tension, and guarantee that roll work is constantly in cryogenic.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of monolithic band intelligence deep cooling experimental mill with tension, including rolling-mill housing 11 and insulating box, feature exist
In rolled piece 5 is monolithic band, and using the traffic direction of rolled piece 5 as left and right directions, the insulating box includes left side cabinet 2 and right side
Cabinet 12, left side cabinet 2 and right side cabinet 12 are symmetrically fastened in rolling-mill housing 11 from the left and right sides, make the upper backup roll of milling train
7, top working roll 8, bottom working roll 9 and lower backing roll 10 are respectively positioned in case, setting left side workbench 3 in the left side cabinet 2,
Hydraulically operated fixture 1 is provided on left side workbench 3, setting right side workbench 15 in the right side cabinet 12, left side work
Hydraulically operated fixture 2 14 is provided on platform 15, the both ends of the rolled piece 5 are pressed from both sides by hydraulically operated fixture 1 and hydraulically operated fixture 2 14 respectively
It holds, entrance and gas vent, cooling gas and lubricating fluid input pipe is provided on the left side cabinet 2 and right side cabinet 12
Road enters in case from entrance and gas vent, and connection is located at cooling gas and lubrication nozzle for liquid at roll gap entrance.
The entrance and gas vent include one 1 He of entrance and gas vent that 2 left side of left side cabinet is arranged in
The entrance and gas vent 2 16 of 12 right side of right side cabinet are set.
The cooling gas and lubrication nozzle for liquid include cooling gas and lubrication nozzle for liquid 1 and cooling gas and lubricating fluid
There are two nozzle 2 13, cooling gas and lubrication nozzle for liquid 1, is located at the rolled piece upper and lower sides of entrance on the left of roll gap, to
Upper working rolls and lower working rolls spray cooling gas and lubricating fluid on the left of roll gap, cooling gas and lubrication nozzle for liquid 2 14 also there are two, respectively
Positioned at the rolled piece upper and lower sides of entrance on the right side of roll gap, to roll gap right side upper working rolls and lower working rolls spray cooling gas and lubricating fluid.
The material of the monolithic band is aluminium, aluminium alloy, copper, copper alloy, titanium or titanium alloy.
The monolithic thickness of strip is 0.5~5mm, and width is 50~500mm, and length is approximately equal to rolling mill diameter.
The hydraulically operated fixture 1 and hydraulically operated fixture 2 14 are all made of the removable hydraulically operated fixture of HYDRAULIC CONTROL SYSTEM, can be with
Realization is moved under constant-tension.
The present invention also provides using the monolithic band intelligence deep cooling experimental mill with tension deep cooling milling method,
Steps are as follows:
Step 1: rolled piece 5 is fixed on hydraulically operated fixture 1, working roll is passed through, other end is fixed on hydraulically operated fixture 2 14
On；
Step 2: left side cabinet 2 and right side cabinet 12 are fixed by screws in 11 two sides of rolling-mill housing；
Step 3: being imported by liquid nitrogen and lubricating fluid, cooling gas and lubricating fluid are imported cooling gas by pump and lubricating fluid sprays
Mouth realizes cooling and lubrication to roll, that is, top working roll 8 and bottom working roll 9；
Step 4: opening roll, zero load rotation is realized, realize that roll and rolled piece are uniformly cooled -190 DEG C~-50
℃；
Step 5: adjusting roller gap by hydraulic device, deep cooling rolling is realized.Using hydraulic control system, pass through liquid
It presses fixture 1 and hydraulically operated fixture 2 14 to adjust the front and back tension of 5 operation of rolling of rolled piece, at the end of rolling is fast, stops rolling in advance
System, prevents from hydraulically operated fixture 1 being involved in roll, damage；
Step 6: conversion rolling direction, adjusts volume under pressure, lower a time experiment is completed；
Step 7: repetition the 6th step 3-10 times, it completes monolithic band band tension deep cooling and rolls.
Before 5th step deep cooling rolling, can opening temperature detection device, stop input when temperature reaches setting value
Cooling gas continues to input cooling gas when temperature is not below setting value.
Reduction ratio is rolled in 5th step and the 6th step operation of rolling to be controlled 10%~35%.
Compared with prior art, the beneficial effects of the present invention are:
The present invention can save the liquid nitrogen of cooling roll or cooling nitrogen usage amount in the deep cooling operation of rolling, reduce energy
Consumption, while realizing that monolithic band band tension deep cooling rolls.Deep cooling experimental mill of the present invention be suitable at present aluminium and aluminium alloy, copper and
The deep cooling of the single piece of material such as copper alloy, titanium or titanium alloy rolls pilot plant test.
Detailed description of the invention
Fig. 1 is rolling mill structure schematic diagram (main view) of the present invention.
Fig. 2 is rolling mill structure schematic diagram (left view) of the present invention.
Specific embodiment
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, a kind of monolithic band intelligence deep cooling experimental mill with tension, including 11 He of rolling-mill housing
Insulating box, rolled piece 5 are monolithic band, and material can be aluminium, aluminium alloy, copper, copper alloy, titanium or titanium alloy etc..With the fortune of rolled piece 5
Line direction is left and right directions, and insulating box includes left side cabinet 2 and right side cabinet 12, and left side cabinet 2 and right side cabinet 12 are from left and right
Two sides are symmetrically fastened in rolling-mill housing 11, make upper backup roll 7, top working roll 8, bottom working roll 9 and the lower backing roll 10 of milling train
It is respectively positioned in case.Motor 19 drives roll rotation by 17 output power of motor linkage axis 18 and gear-box.
Left side workbench 3 is set in left side cabinet 2, is provided with hydraulically operated fixture 1, the right side on left side workbench 3
Right side workbench 15 is set in side box body 12, hydraulically operated fixture 2 14, the both ends point of rolled piece 5 are provided on left side workbench 15
It is not clamped by hydraulically operated fixture 1 and hydraulically operated fixture 2 14.Hydraulically operated fixture 1 and hydraulically operated fixture 2 14 are full-automatic removable hydrodynamic
Press fixture.
The left side of left side cabinet 2 is provided with entrance and gas vent 1, and the right side of right side cabinet 12 is provided with pipe
Road entrance and gas vent 2 16, two-way cooling gas and lubricating fluid input channel are respectively from entrance and gas vent 1 and pipe
Road entrance and gas vent 2 16 enter in case, and connection is located at cooling gas at roll gap entrance and lubrication nozzle for liquid 1 and cold
But gas and lubrication nozzle for liquid 2 13.
There are two cooling gas and lubrication nozzle for liquid 1, the rolled piece upper and lower sides of entrance on the left of roll gap is located at, to roller
Seam left side upper working rolls and lower working rolls spray cooling gas and lubricating fluid, cooling gas and lubrication nozzle for liquid 2 14 also there are two, position respectively
The rolled piece upper and lower sides of entrance on the right side of roll gap, to roll gap right side upper working rolls and lower working rolls spray cooling gas and lubricating fluid.
Cardinal principle of the invention is to increase incubator in rolling-mill housing, realizes roll and ambient atmosphere in the operation of rolling
Environment isolation realizes that energy consumption is greatly reduced to reduce liquid nitrogen or other cooling gas usage amounts.Meanwhile it testing
Increase track inside milling train, realize band automatic sample conveying and realize rolling with (stock) tension, specific step is as follows for milling method:
Step 1: material, which is processed into certain size, obtains monolithic band, i.e. rolled piece 5, thickness of strip is 0.5~5mm,
Width is 50~500mm, and length is approximately equal to rolling mill diameter.
Step 2: opening insulating box, monolithic band one end is fixed on hydraulically operated fixture 1, passes through working roll, the other end
It is fixed on hydraulically operated fixture 2 14.
Step 3: insulating box is fixed by screws in 11 two sides of rolling-mill housing, realize roll, fixture, rolled piece 5 etc. completely
In insulating box.
Step 4: being imported by liquid nitrogen and lubricating fluid, cooling gas and lubricating fluid are imported cooling gas by pump and lubricating fluid sprays
Mouth 1 and cooling gas and lubrication nozzle for liquid 2 13 realize cooling and lubrication to roll.
Step 5: opening roll, zero load rotation is realized, realize that roll and rolled piece are uniformly cooled -190 DEG C~-50
℃。
Step 6: opening temperature detection device, stops input cooling gas when temperature reaches setting value.When temperature is not low
In setting value, continue to input cooling gas.
Step 7: adjusting roller gap by hydraulic device, deep cooling rolling is realized.Hydraulic control system is wherein used, is led to
It crosses hydraulically operated fixture 1 and hydraulically operated fixture 2 14 adjusts the front and back tension of the rolled piece operation of rolling.At the end of rolling is fast, stop in advance
Rolling, prevents from hydraulically operated fixture 1 being involved in roll, damage.Reduction ratio control is rolled in the operation of rolling 10%~35%.
Step 8: conversion rolling direction, adjusts volume under pressure, lower a time experiment is completed.Reduction ratio is rolled in the operation of rolling
Control is 10%~35%.
Step 9: repetition the 8th step 3-10 times, it completes monolithic band band tension deep cooling and rolls.
In one particular embodiment of the present invention, using 6061 monolithic band of aluminium alloy as raw material, processing gained is single
Piece band with a thickness of 3mm, width 200mm, length 500mm, when deep cooling rolls roll and rolled piece be uniformly cooled-
100 DEG C, each passes reduction ratio control can be obtained super in 20%, 3 reciprocal i.e. rolling 6 time altogether in the operation of rolling
6061 aluminium alloy monolithic band of fine grain.
Claims (9)
1. a kind of monolithic band intelligence deep cooling experimental mill with tension, including rolling-mill housing (11) and insulating box, feature exist
In rolled piece (5) is monolithic band, and using the traffic direction of rolled piece (5) as left and right directions, the insulating box includes left side cabinet (2)
With right side cabinet (12), left side cabinet (2) and right side cabinet (12) are symmetrically fastened on rolling-mill housing (11) from the left and right sides, are made
Upper backup roll (7), top working roll (8), bottom working roll (9) and the lower backing roll (10) of milling train are respectively positioned in case, the left side case
Left side workbench (3) is set in body (2), is provided with hydraulically operated fixture one (4), the right side cabinet on left side workbench (3)
(12) right side workbench (15) is set in, is provided with hydraulically operated fixture two (14), the rolled piece (5) on left side workbench (15)
Both ends clamped respectively by hydraulically operated fixture one (4) and hydraulically operated fixture two (14), on the left side cabinet (2) and right side cabinet (12)
It is provided with entrance and gas vent, cooling gas and lubricating fluid input channel enter in case from entrance and gas vent,
Connection is located at cooling gas and lubrication nozzle for liquid at roll gap entrance.
2. the monolithic band intelligence deep cooling experimental mill with tension according to claim 1, which is characterized in that the pipeline enters
Mouth and gas vent include setting in the entrance and gas vent one (1) of left side cabinet (2) left side and are arranged in right side cabinet
(12) entrance and gas vent two (16) of right side.
3. the monolithic band intelligence deep cooling experimental mill with tension according to claim 1, which is characterized in that the cooling air
Body and lubrication nozzle for liquid include cooling gas and lubricate nozzle for liquid one (6) and cooling gas and lubrication nozzle for liquid two (13), cooling
There are two gases and lubrication nozzle for liquid one (6), is located at the rolled piece upper and lower sides of entrance on the left of roll gap, up and down to roll gap left side
Working roll spray cooling gas and lubricating fluid, cooling gas and lubrication nozzle for liquid two (14) also there are two, be located at roll gap the right side
The rolled piece upper and lower sides of side entrance, to roll gap right side upper working rolls and lower working rolls spray cooling gas and lubricating fluid.
4. the monolithic band intelligence deep cooling experimental mill with tension according to claim 1, which is characterized in that the monolithic band
The material of material is aluminium, aluminium alloy, copper, copper alloy, titanium or titanium alloy.
5. the monolithic band intelligence deep cooling experimental mill with tension according to claim 1, which is characterized in that the monolithic band
Material is 50~500mm with a thickness of 0.5~5mm, width, and length is approximately equal to rolling mill diameter.
6. the monolithic band intelligence deep cooling experimental mill with tension according to claim 1, which is characterized in that the hydraulic clip
One (4) of tool and hydraulically operated fixture two (14) are all made of the removable hydraulically operated fixture of HYDRAULIC CONTROL SYSTEM, can carry out under constant-tension
It is mobile.
7. the deep cooling milling method of the monolithic band intelligence deep cooling experimental mill described in claim 1 with tension, which is characterized in that
Steps are as follows:
Step 1: rolled piece (5) is fixed on hydraulically operated fixture one (4), working roll is passed through, other end is fixed on hydraulically operated fixture two
(14) on；
Step 2: left side cabinet (2) and right side cabinet (12) are fixed by screws in rolling-mill housing (11) two sides；
Step 3: importing pump by liquid nitrogen and lubricating fluid imports cooling gas and lubrication nozzle for liquid for cooling gas and lubricating fluid,
Cooling and lubrication is realized to roll, that is, top working roll (8) and bottom working roll (9)；
Step 4: opening roll, zero load rotation is realized, realize that roll and rolled piece are uniformly cooled -190 DEG C~-50 DEG C；
Step 5: adjusting roller gap by hydraulic device, realizes deep cooling rolling, using hydraulic control system, pass through hydraulic clip
Have one (4) and hydraulically operated fixture two (14) adjusts the front and back tension of rolled piece (5) operation of rolling, at the end of rolling is fast, stops in advance
Rolling, prevents from hydraulically operated fixture one (4) being involved in roll, damage；
Step 6: conversion rolling direction, adjusts volume under pressure, lower a time experiment is completed；
Step 7: repetition the 6th step 3-10 times, it completes monolithic band band tension deep cooling and rolls.
8. deep cooling milling method according to claim 7, which is characterized in that before the 5th step deep cooling rolling, open temperature
Detection device is spent, stops input cooling gas when temperature reaches setting value, when temperature is not below setting value, continues input cooling
Gas.
9. deep cooling milling method according to claim 7, which is characterized in that rolled in the 5th step and the 6th step operation of rolling
Reduction ratio processed is controlled 10%~35%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040401.2A CN109746268A (en) | 2019-01-16 | 2019-01-16 | A kind of monolithic band intelligence deep cooling experimental mill and milling method with tension |
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| CN201910040401.2A CN109746268A (en) | 2019-01-16 | 2019-01-16 | A kind of monolithic band intelligence deep cooling experimental mill and milling method with tension |
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Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114260320A (en) * | 2020-09-16 | 2022-04-01 | 宝山钢铁股份有限公司 | Intermediate cooling control method for overcoming temperature deviation of medium plate heating furnace |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001096301A (en) * | 1999-09-30 | 2001-04-10 | Kobe Steel Ltd | Rolling method of aluminum or aluminum alloy |
| CN101259487A (en) * | 2008-04-18 | 2008-09-10 | 东北大学 | Vertical pulling type cold rolling experiment machine unit strip steel thickness indirect measurement method |
| CN104148386A (en) * | 2014-07-01 | 2014-11-19 | 东北大学 | Hydraulic tension warm-rolling machine |
| CN105039882A (en) * | 2015-06-11 | 2015-11-11 | 大连理工大学 | Device for preparing precipitation strengthened type high-strength and high-conductivity CuZr alloy |
| CN108114996A (en) * | 2017-12-01 | 2018-06-05 | 中南大学 | A kind of continuous deep cooling box of deep cooling rolled strip and the deep cooling rolling system using the case |
| CN207463813U (en) * | 2017-11-30 | 2018-06-08 | 辽宁科技大学 | A kind of miniature heated type four-roller sheet moulding device |
| CN108296286A (en) * | 2018-01-02 | 2018-07-20 | 中南大学 | A kind of continuous reversible deep cooling rolling mill practice preparing high-performing car aluminium alloy strips and equipment |
| CN109108070A (en) * | 2018-08-29 | 2019-01-01 | 中南大学 | A kind of Impulsive Current auxiliary deep cooling rolling device and method preparing ultrafine grain metal band |
| CN109174968A (en) * | 2018-08-29 | 2019-01-11 | 中南大学 | A kind of Impulsive Current auxiliary deep cooling friction speed asymmetrical rolling apparatus and method preparing ultrafine grain metal band |
| CN109201735A (en) * | 2018-11-15 | 2019-01-15 | 中南大学 | A kind of High-strength pure copper foil material deep cooling rolling preparation method |
-
2019
- 2019-01-16 CN CN201910040401.2A patent/CN109746268A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001096301A (en) * | 1999-09-30 | 2001-04-10 | Kobe Steel Ltd | Rolling method of aluminum or aluminum alloy |
| CN101259487A (en) * | 2008-04-18 | 2008-09-10 | 东北大学 | Vertical pulling type cold rolling experiment machine unit strip steel thickness indirect measurement method |
| CN104148386A (en) * | 2014-07-01 | 2014-11-19 | 东北大学 | Hydraulic tension warm-rolling machine |
| CN105039882A (en) * | 2015-06-11 | 2015-11-11 | 大连理工大学 | Device for preparing precipitation strengthened type high-strength and high-conductivity CuZr alloy |
| CN207463813U (en) * | 2017-11-30 | 2018-06-08 | 辽宁科技大学 | A kind of miniature heated type four-roller sheet moulding device |
| CN108114996A (en) * | 2017-12-01 | 2018-06-05 | 中南大学 | A kind of continuous deep cooling box of deep cooling rolled strip and the deep cooling rolling system using the case |
| CN108296286A (en) * | 2018-01-02 | 2018-07-20 | 中南大学 | A kind of continuous reversible deep cooling rolling mill practice preparing high-performing car aluminium alloy strips and equipment |
| CN109108070A (en) * | 2018-08-29 | 2019-01-01 | 中南大学 | A kind of Impulsive Current auxiliary deep cooling rolling device and method preparing ultrafine grain metal band |
| CN109174968A (en) * | 2018-08-29 | 2019-01-11 | 中南大学 | A kind of Impulsive Current auxiliary deep cooling friction speed asymmetrical rolling apparatus and method preparing ultrafine grain metal band |
| CN109201735A (en) * | 2018-11-15 | 2019-01-15 | 中南大学 | A kind of High-strength pure copper foil material deep cooling rolling preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 矫志杰等: "新型冷轧实验轧机的工艺设计", 《钢铁》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114260320A (en) * | 2020-09-16 | 2022-04-01 | 宝山钢铁股份有限公司 | Intermediate cooling control method for overcoming temperature deviation of medium plate heating furnace |
| CN114260320B (en) * | 2020-09-16 | 2024-03-08 | 宝山钢铁股份有限公司 | Intermediate cooling control method for overcoming temperature deviation of medium plate heating furnace |
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Application publication date: 20190514 |