CN103949473B - A kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method - Google Patents

A kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method Download PDF

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CN103949473B
CN103949473B CN201410172437.3A CN201410172437A CN103949473B CN 103949473 B CN103949473 B CN 103949473B CN 201410172437 A CN201410172437 A CN 201410172437A CN 103949473 B CN103949473 B CN 103949473B
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frame
roll
roller
working roll
backing
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CN103949473A (en
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计江
赵团民
尤磊
徐利璞
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China National Heavy Machinery Research Institute Co Ltd
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Abstract

The present invention relates to machinery and automation on metallurgy, rolling technical field, specifically provide a kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method, consider the configuration requirement of smooth product and secondary cold-rolling product features pair roller system, the minor diameter working roll roller system of the heavy reduction in the smooth double secondary cold-rolling unit of Stand Mill four roller required by No. 1 frame employing secondary cold-rolling function is proposed, No. 2 frames adopt the major diameter working roll roller system of the excellent plate shape required by smooth function, and consider the interchangeability of unit equipment, No. 1 breast roll system and No. 2 breast roll systems share the backing roll roller system of same size, No. 1 frame and No. 2 frames adopt identical workroll bearing holder assembly.The invention solves the smooth double secondary cold-rolling unit of Stand Mill four roller and should ensure the plate shape that smooth product is good, the contradiction between the stable rolling guaranteeing Thin Specs secondary cold-rolling product again, on-the-spot actual motion is steadily reliable, obtains significant effect.

Description

A kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method
Technical field
The present invention relates to machinery and automation on metallurgy, rolling technical field, specifically provide a kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method.
Background technology
The smooth double secondary cold-rolling unit of Stand Mill four roller, is specifically designed to the ultra-thin tinning substrate of high-quality and produces.This unit has secondary cold-rolling and dry, wet jetting piles function.Under normal temperature state, by the band steel after cold rolled annealed, carry out pressure in the first frame thinning, carry out skin pass rolling in the second frame, make band steel obtain its predetermined mechanical performance and surface quality, improve the plate shape of band steel, realize secondary cold-rolling function; Obtain predetermined percentage elongation by No. 1 and No. 2 frames, obtain desirable mechanical performance, and improve surface quality and the plate shape of band steel, realize smooth function.
At present, China's Tinplate Production ability is saturated in general, but Problems existing is key technology level does not also catch up with, and substrate is partially thick.Tin plate technology is to production ultrathin products future development in the world, and Japan accounts for 85% ~ 90% of the total market size to the tin plate demand of below 0.28mm, and needed for international high-quality barrel cage, tin plate thickness is generally 0.14mm ~ 0.19mm.
The smooth double secondary cold rolling of Stand Mill, general No. 1 frame mainly plays metamorphosis, gets 90% of overall reduction, and No. 2 frames mainly play smooth effect, get 10%.So both ensure that heavy reduction was out of shape, in turn ensure that plate shape and the surface quality of finished strip.Overall reduction is determined according to the requirement of product standard and hardness (intensity), and when the hardness required is higher, then drafts is larger accordingly, is generally 30% ~ 40%.
To sum up, consider the smooth double secondary cold-rolling unit of Stand Mill four roller and both ensured that secondary cold-rolling product heavy reduction was out of shape, ensure the requirement of smooth production board shape and surface quality again, invention a kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method.
Summary of the invention
The present invention is directed to the smooth double secondary cold-rolling unit of Stand Mill four roller and should ensure the very thin panel products heavy reduction distortion of secondary cold-rolling, ensure the requirement of smooth production board shape and surface quality again, provide a kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method.
This Stand Mill four roller provided by the invention smooth double secondary cold-rolling unit roller system collocation method, comprise No. 1 frame minor diameter working roll roller system and No. 2 frame major diameter working roll roller systems, No. 1 frame minor diameter working roll roller system comprises: No. 1 frame upper backup roll fore side bearing block; No. 1 frame backing roll; No. 1 frame upper backup roll transmission side bearing block; No. 1 frame bearing block at operation side of upper work roller; No. 1 frame working roll; No. 1 frame transmission side bearing block of upper work roll; No. 1 frame bottom working roll fore side bearing seat piece; No. 1 frame bottom working roll transmission side bearing seat piece; No. 1 frame lower backing roll fore side bearing seat piece; No. 1 frame lower backing roll transmission side bearing seat piece; The quantity of described No. 1 frame backing roll is two, lays respectively at the top and bottom of No. 1 frame minor diameter working roll roller system, between these two No. 1 frame backing rolls, be vertically provided with two identical No. 1 frame working rolls; No. 2 frame major diameter working roll roller systems comprise: No. 2 frame upper backup roll fore side bearing seat piece; No. 2 frame backing rolls; No. 2 frame upper backup roll transmission side bearing seat piece; No. 2 frame bearing block at operation side of upper work roller parts; No. 2 frame working rolls; No. 2 frame transmission side bearing block of upper work roll parts; No. 2 frame bottom working roll fore side bearing seat piece; No. 2 frame bottom working roll transmission side bearing seat piece; No. 2 frame lower backing roll fore side bearing seat piece; No. 2 frame lower backing roll transmission side bearing seat piece; The quantity of described No. 2 frame backing rolls is two, lays respectively at the top and bottom of No. 2 frame major diameter working roll roller systems, between these two No. 2 frame backing rolls, be vertically provided with two identical No. 2 frame working rolls; No. 1 frame minor diameter working roll roller system is arranged on the left side of No. 2 frame major diameter working roll roller systems, and described collocation method specifically refers to combination and the parameter configuration of No. 1 frame and No. 2 breast roll systems in the smooth double secondary cold-rolling unit of Stand Mill four roller; No. 1 frame adopts the minor diameter working roll roller system of the heavy reduction required by secondary cold-rolling function, and No. 2 frames adopt the major diameter working roll roller system of the excellent plate shape required by smooth function; Consider the interchangeability of unit equipment, No. 1 breast roll system and No. 2 breast roll systems share the support roller device of same size, and No. 1 frame and No. 2 frames adopt the workroll bearing seat piece of same sizes; Determine No. 1 frame working roll roll surface width L w1, No. 1 frame backing roll roll surface width L b1, No. 1 frame working roll roller footpath D w1, No. 1 frame backing roll roller footpath D b1with No. 2 frame working roll roll surface width L w2, No. 2 frame backing roll roll surface width L b2, No. 2 frame working roll roller footpath D w2, No. 2 frame backing roll roller footpath D b2collocation method as follows:
Strip width L is rolled with maximum max=1050mm and the thinlyyest roll belt steel thickness H min=0.16mm, determines No. 1 frame working roll roll surface width L w1, No. 1 frame backing roll roll surface width L b1, No. 1 frame working roll roller footpath D w1, No. 1 frame backing roll roller footpath D b1with No. 2 frame working roll roll surface width L w2, No. 2 frame backing roll roll surface width L b2, No. 2 frame working roll roller footpath D w2, No. 2 frame backing roll roller footpath D b2, aforementioned roller system configuration parameter can be described as:
No. 1 frame working roll roll surface width L w1=L max+ (100 ~ 200) mm;
No. 1 frame backing roll roll surface width L b1=L w1-(50 ~ 150) mm;
No. 1 frame working roll roller footpath D w1=H min× (2250 ~ 2500) mm;
No. 1 frame backing roll roller footpath D b1=D w1× (1.8 ~ 2.4) mm;
No. 2 frame working roll roll surface width L w2=L w1;
No. 2 frame backing roll roll surface width L b2=L b1;
No. 2 frame working roll roller footpath D w2=D w1× (1.3 ~ 1.5) mm;
No. 2 frame backing roll roller footpath D b2=D b1.
The smooth double secondary cold-rolling unit roller cording body collocation method of above-mentioned Stand Mill four roller is:
No. 1 frame working roll roll surface width, gets L w1=1050+150=1200mm;
No. 1 frame backing roll roll surface width, gets L b1=1200-100=1100mm;
No. 1 frame working roll roller footpath, gets D w1=0.16 × (2300 ~ 2500)=370 ~ 400mm;
No. 1 frame backing roll roller footpath D b1=(370 ~ 400) × (1.8 ~ 2.4)=660 ~ 960mm, gets D b1=900 ~ 960mm;
No. 2 frame working roll roll surface width L w2=L w1;
No. 2 frame backing roll roll surface width L b2=L b1;
No. 2 frame working roll roller footpaths, get D w2=(370 ~ 400) × 1.4=520 ~ 560mm;
No. 2 frame backing roll roller footpath D b2=D b1.
The present invention has the following advantages:
In the present invention, No. 1 frame adopts minor diameter working roll roller system to meet heavy reduction rolling required by the very thin panel products of secondary cold-rolling; The excellent plate shape that No. 2 frames adopt major diameter working roll roller system can realize required by smooth function; No. 1 frame and No. 2 breast roll systems share the support roller device of same size, and No. 1 frame and No. 2 frames adopt working roll bearing block and the related accessory thereof of same size, achieve higher design interchangeability, decrease the specification kind of standby redundancy, greatly reduce production, operation and maintenance cost, onsite application is convenient, reliable.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is Stand Mill four roller smooth double secondary cold-rolling unit roller system allocation plan principle schematic;
Fig. 2 is No. 1 frame minor diameter working roll roller system schematic diagram;
Fig. 3 is No. 2 frame major diameter working roll roller system schematic diagrames.
Description of reference numerals: 1, No. 1 frame minor diameter working roll roller system; 2, No. 2 frame major diameter working roll roller systems; 3, rolled piece; 101, No. 1 frame upper backup roll fore side bearing block; 102, No. 1 frame backing roll; 103, No. 1 frame upper backup roll transmission side bearing block; 104, No. 1 frame bearing block at operation side of upper work roller; 105, No. 1 frame working roll; 106, No. 1 frame transmission side bearing block of upper work roll; 107, No. 1 frame bottom working roll fore side bearing seat piece; 108, No. 1 frame bottom working roll transmission side bearing seat piece; 109, No. 1 frame lower backing roll fore side bearing seat piece; 110, No. 1 frame lower backing roll transmission side bearing seat piece; 201, No. 2 frame upper backup roll fore side bearing seat piece; 202, No. 2 frame backing rolls; 203, No. 2 frame upper backup roll transmission side bearing seat piece; 204, No. 2 frame bearing block at operation side of upper work roller parts; 205, No. 2 frame working rolls; 206, No. 2 frame transmission side bearing block of upper work roll parts; 207, No. 2 frame bottom working roll fore side bearing seat piece; 208, No. 2 frame bottom working roll transmission side bearing seat piece; 209, No. 2 frame lower backing roll fore side bearing seat piece; 210, No. 2 frame lower backing roll transmission side bearing seat piece.
Detailed description of the invention
Fig. 1 is Stand Mill four roller smooth double secondary cold-rolling unit roller system allocation plan principle schematic, comprise No. 1 frame minor diameter working roll roller system and No. 2 frame major diameter working roll roller systems, No. 1 frame minor diameter working roll roller system and No. 2 its each self-structures of frame major diameter working roll roller system are prior art.In the present invention, No. 1 frame minor diameter working roll roller system is arranged on the left side of No. 2 frame major diameter working roll roller systems.The main technical content that the present invention solves determines Stand Mill four roller smooth double secondary cold-rolling unit roller system configuration parameter exactly, specifically refers to according to classical rolling therory, metal plastic deformation is theoretical, maximum rolls strip width L max, the thinlyyest roll belt steel thickness H minand the depth of hardening zone etc. of cold roll material its roller diameter corresponding, determine No. 1 frame working roll roll surface width L w1, No. 1 frame backing roll roll surface width L b1, No. 1 frame working roll roller footpath D w1, No. 1 frame backing roll roller footpath D b1with No. 2 frame working roll roll surface width L w2, No. 2 frame backing roll roll surface width L b2, No. 2 frame working roll roller footpath D w2, No. 2 frame backing roll roller footpath D b2process and method.
As shown in Figure 2, be No. 1 frame minor diameter working roll roller system schematic diagram, comprise No. 1 frame upper backup roll fore side bearing block 101, No. 1 frame backing roll 102, No. 1 frame upper backup roll transmission side bearing block, 103, No. 1 frame bearing block at operation side of upper work roller, 104, No. 1 frame working roll 105, No. 1 frame transmission side bearing block of upper work roll 106, No. 1 frame bottom working roll fore side bearing seat piece 107, No. 1 frame bottom working roll transmission side bearing seat piece 108, No. 1 frame lower backing roll fore side bearing seat piece 109, No. 1 frame lower backing roll transmission side bearing seat piece 110.The quantity of No. 1 frame backing roll 102 is two, lays respectively at the top and bottom of No. 1 frame minor diameter working roll roller system, between these two No. 1 frame backing rolls 102, be vertically provided with two identical No. 1 frame working rolls 105.
As shown in Figure 3, be No. 2 frame major diameter working roll roller system schematic diagrames, comprise No. 2 frame upper backup roll fore side bearing seat piece 201, No. 2 frame frame backing rolls 202, No. 2 frame upper backup roll transmission side bearing seat piece 203, No. 2 frame bearing block at operation side of upper work roller parts 204, No. 2 frame working rolls 205, No. 2 frame transmission side bearing block of upper work roll parts 206, No. 2 frame bottom working roll fore side bearing seat piece 207, No. 2 frame bottom working roll transmission side bearing seat piece 208, No. 2 frame lower backing roll fore side bearing seat piece 209, No. 2 frame lower backing roll transmission side bearing seat piece 210.The quantity of No. 2 frame backing rolls 202 is two, lays respectively at the top and bottom of No. 2 frame major diameter working roll roller systems, between these two No. 2 frame backing rolls 202, be vertically provided with two identical No. 2 frame working rolls 205.
In order to improve design interchangeability, reducing the specification kind of standby redundancy, reducing and producing, operation and maintenance cost, the present invention in roller system overall arrangement scheme, by the upper backup roll fore side bearing seat piece in No. 1 frame and No. 2 frames, backing roll, upper backup roll transmission side bearing seat piece, bearing block at operation side of upper work roller part, transmission side bearing block of upper work roll part, bottom working roll fore side bearing seat piece, bottom working roll transmission side bearing seat piece, lower backing roll fore side bearing seat piece is all designed to structure with lower backing roll transmission side bearing seat piece and the identical (numbering 101 and 201 namely in Fig. 2 and Fig. 3 of dimensions, numbering 102 and 202, numbering 103 and 203, numbering 104 and 204, numbering 105 and 205, numbering 106 and 206, numbering 107 and 207, numbering 108 and 208, numbering 109 and 209, numbering 110 is identical with 210 indication structures and dimensions), only No. 1 frame working roll 105 is different on configuring from the roller footpath of No. 2 frame working rolls 205, mainly in order to the heavy reduction rolling that meets respectively required by the very thin panel products of secondary cold-rolling and the excellent plate shape that can realize required by smooth function.
Theoretical according to classical rolling therory and metal plastic deformation, known: working roll roll surface width is with maximum to roll strip width directly related, and the thinnest to roll belt steel thickness relevant with working roll roller footpath size, and completed belt steel plate shape is relevant with working roll roller footpath size.In addition, the roller footpath scope of cold roll also depends on the depth of hardening zone of roll material its roller diameter corresponding.Provide the smooth double secondary cold-rolling unit roller system's layoutprocedure of Stand Mill four roller and method below.
Strip width L is rolled with maximum max=1050mm and the thinlyyest roll belt steel thickness H min=0.16mm, determines No. 1 frame working roll roll surface width L w1, No. 1 frame backing roll roll surface width L b1, No. 1 frame working roll roller footpath D w1, No. 1 frame backing roll roller footpath D b1with No. 2 frame working roll roll surface width L w2, No. 2 frame backing roll roll surface width L b2, No. 2 frame working roll roller footpath D w2, No. 2 frame backing roll roller footpath D b2.Aforementioned roller system configuration parameter can be described as:
No. 1 frame working roll roll surface width L w1=L maxl is got in+(100 ~ 200) w1=1050+150=1200mm;
No. 1 frame backing roll roll surface width L b1=L w1-(50 ~ 150), get L b1=1200-100=1100mm;
No. 1 frame working roll roller footpath D w1=H min× (2250 ~ 2500), get D w1=0.16 × (2300 ~ 2500)=370 ~ 400mm (main consideration is the thinnest rolls belt steel thickness);
No. 1 frame backing roll roller footpath DB1=DW1 × (1.8 ~ 2.4)=(370 ~ 400) × (1.8 ~ 2.4)=660 ~ 960mm, gets D b1=900 ~ 960mm;
No. 2 frame working roll roll surface width L w2=L w1;
No. 2 frame backing roll roll surface width L b2=L b1;
No. 2 frame working roll roller footpath D w2=D w1× (1.3 ~ 1.5), get D w2=(370 ~ 400) × 1.4=520 ~ 560mm (main consideration finished product belt plate shape precision);
No. 2 frame backing roll roller footpath D b2=D b1;
Stand Mill four roller smooth double secondary cold-rolling unit roller system allocation list
Project name Parameter value Unit
Maximumly roll strip width L Max 1050 mm
The thinlyyest roll belt steel thickness H Min 0.16 mm
No. 1 frame working roll roll surface width L W1 1200 mm
No. 1 frame backing roll roll surface width L B1 1100 mm
No. 1 frame working roll roller footpath D W1 370~400 mm
No. 1 frame backing roll roller footpath D B1 900~960 mm
No. 2 frame working roll roll surface width L W2 1200 mm
No. 2 frame backing roll roll surface width L B2 1100 mm
No. 2 frame working roll roller footpath D W2 520~560 mm
No. 2 frame backing roll roller footpath D B2 900~960 mm
The thinnest secondary cold-rolling product specification can be made to reach 0.16mm according to the roller system collocation method in the present invention, maximum compression rate reaches 40%, and stable operation is at more than 900m/min, and thickness of slab precision is high, and plate shape precision is good.
The present invention has the following advantages:
In the present invention, No. 1 frame adopts minor diameter working roll roller system to meet heavy reduction rolling required by the very thin panel products of secondary cold-rolling; The excellent plate shape that No. 2 frames adopt major diameter working roll roller system can realize required by smooth function; No. 1 frame and No. 2 breast roll systems share the support roller device of same size, and No. 1 frame and No. 2 frames adopt working roll bearing block and the related accessory thereof of same size, achieve higher design interchangeability, decrease the specification kind of standby redundancy, greatly reduce production, operation and maintenance cost, onsite application is convenient, reliable.
The present embodiment does not have specifically described part all to belong to common practise and the known technology of the art, and we can provide reference if needed! More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.

Claims (2)

1. a Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method, comprise No. 1 frame minor diameter working roll roller system and No. 2 frame major diameter working roll roller systems, No. 1 frame minor diameter working roll roller system comprises: No. 1 frame upper backup roll fore side bearing block (101); No. 1 frame backing roll (102); No. 1 frame upper backup roll transmission side bearing block (103); No. 1 frame bearing block at operation side of upper work roller (104); No. 1 frame working roll (105); No. 1 frame transmission side bearing block of upper work roll (106); No. 1 frame bottom working roll fore side bearing block (107); No. 1 frame bottom working roll transmission side bearing block (108); No. 1 frame machine lower backing roll fore side bearing block (109); No. 1 frame machine lower backing roll transmission side bearing block (110); The quantity of described No. 1 frame backing roll (102) is two, lay respectively at the top and bottom of No. 1 frame minor diameter working roll roller system, between this two No. 1 frame backing roll (102), be vertically provided with two No. 1 identical frame working roll (105); No. 2 frame major diameter working roll roller systems comprise: No. 2 frame upper backup roll fore sides bearing seat piece (201); No. 2 frame backing rolls (202); No. 2 frame upper backup roll transmission sides bearing seat piece (203); No. 2 frame bearing block at operation side of upper work roller parts (204); No. 2 frame working rolls (205); No. 2 frame transmission side bearing block of upper work roll parts (206); No. 2 frame bottom working roll fore sides bearing seat piece (207); No. 2 frame bottom working roll transmission sides bearing seat piece (208); No. 2 frame lower backing roll fore sides bearing seat piece (209); No. 2 frame lower backing roll transmission sides bearing seat piece (210); The quantity of described No. 2 frame backing rolls (202) is two, lay respectively at the top and bottom of No. 2 frame major diameter working roll roller systems, between these two No. 2 frame backing rolls (202), be vertically provided with two No. 2 identical frame working rolls (205); No. 1 frame minor diameter working roll roller system is arranged on the left side of No. 2 frame major diameter working roll roller systems, it is characterized in that: described collocation method specifically refers to combination and the parameter configuration of No. 1 frame and No. 2 breast roll systems in the smooth double secondary cold-rolling unit of Stand Mill four roller; No. 1 frame adopts the minor diameter working roll roller system of the heavy reduction required by secondary cold-rolling function, and No. 2 frames adopt the major diameter working roll roller system of the excellent plate shape required by smooth function; Consider the interchangeability of unit equipment, No. 1 breast roll system and No. 2 breast roll systems share the support roller device of same size, and No. 1 frame and No. 2 frames adopt the workroll bearing seat piece of same sizes; Determine No. 1 frame working roll roll surface width L w1, No. 1 frame backing roll roll surface width L b1, No. 1 frame working roll roller footpath D w1, No. 1 frame backing roll roller footpath D b1with No. 2 frame working roll roll surface width L w2, No. 2 frame backing roll roll surface width L b2, No. 2 frame working roll roller footpath D w2, No. 2 frame backing roll roller footpath D b2collocation method as follows:
Strip width L is rolled with maximum max=1050mm and the thinlyyest roll belt steel thickness H min=0.16mm, determines No. 1 frame working roll roll surface width L w1, No. 1 frame backing roll roll surface width L b1, No. 1 frame working roll roller footpath D w1, No. 1 frame backing roll roller footpath D b1with No. 2 frame working roll roll surface width L w2, No. 2 frame backing roll roll surface width L b2, No. 2 frame working roll roller footpath D w2, No. 2 frame backing roll roller footpath D b2, aforementioned roller system configuration parameter can be described as:
No. 1 frame working roll roll surface width L w1=L max+ (100 ~ 200) mm;
No. 1 frame backing roll roll surface width L b1=L w1-(50 ~ 150) mm;
No. 1 frame working roll roller footpath D w1=H min× (2250 ~ 2500) mm;
No. 1 frame backing roll roller footpath D b1=D w1× (1.8 ~ 2.4) mm;
No. 2 frame working roll roll surface width L w2=L w1;
No. 2 frame backing roll roll surface width L b2=L b1;
No. 2 frame working roll roller footpath D w2=D w1× (1.3 ~ 1.5) mm;
No. 2 frame backing roll roller footpath D b2=D b1.
2. a kind of Stand Mill four roller as claimed in claim 1 smooth double secondary cold-rolling unit roller system collocation method, is characterized in that: the smooth double secondary cold-rolling unit roller cording body collocation method of described Stand Mill four roller is:
No. 1 frame working roll roll surface width, gets L w1=1050+150=1200mm;
No. 1 frame backing roll roll surface width, gets L b1=1200-100=1100mm;
No. 1 frame working roll roller footpath, gets D w1=0.16 × (2300 ~ 2500)=370 ~ 400mm;
No. 1 frame backing roll roller footpath D b1=(370 ~ 400) × (1.8 ~ 2.4)=660 ~ 960mm, gets D b1=900 ~ 960mm;
No. 2 frame working roll roll surface width L w2=L w1;
No. 2 frame backing roll roll surface width L b2=L b1;
No. 2 frame working roll roller footpaths, get D w2=(370 ~ 400) × 1.4=520 ~ 560mm;
No. 2 frame backing roll roller footpath D b2=D b1.
CN201410172437.3A 2014-04-25 2014-04-25 A kind of Stand Mill four roller smooth double secondary cold-rolling unit roller system collocation method Active CN103949473B (en)

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