CN103962390B - Tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process - Google Patents

Abstract

Tension force and draught pressure synthetic setting method in a kind of VC roller planisher wet jetting piles process, belong to control field.Be included in planisher computer for controlling and carry out relevant parameter setting, computer for controlling is according to the related data obtained from its input equipment or higher level's computer or production plan, according to coiling temperature setup pattern, method or setup parameter, control each operational factor of planisher, it is according to equipment, technique, mass parameter, set each initial value and optimizing step-length, " rolling is being stablized as optimization object function, using production board shape and mechanical performance and surface roughness all qualified " as under the prerequisite of constraints, the metal pattern parameter of three parts such as draught pressure and front and back tension force is integrally coordinated to set, setting is optimized to roll-force and front and back tension force, under the prerequisite ensureing product mechanical performance, improve product mechanical performance, the Comprehensive Control ability of plate shape and surface quality, while guarantee production efficiency, improve the quality of products.

Description

Tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process

Technical field

The invention belongs to metal machining field, particularly relate to a kind of control method for metallic plate series products production equipment.

Background technology

Along with the demand of the industries such as household electrical appliance, automobile, electronics, building, shipbuilding, military project, space flight increases, strip manufacture obtains fast development.Nowadays, strip ratio has become one of important symbol of the national steel and iron industry level of measurement one.

And it is smooth as the procedure closest to finished product in cold rolled sheet production, mechanical property and the type quality of product after annealing not only can be ensured by the percentage elongation and plate shape controlling band, and certain roughness can be formed at belt steel surface, reach the object improving band steel paintability and forming property.

What require aspects such as band steel mechanical property, plate shape, surface quality along with user improves constantly, and the importance of smooth operation shows especially out day by day.

Skin pass mill group is the finishing equipment improving surface quality of strips.

In the past, the method that the setting of on-the-spot skin pass rolling technological parameter mainly relies on form to combine with operative employee's experience, the stability of product quality cannot ensure.Over nearly 10 years, the raising required along with user, scene is progressively moved towards smooth production models, automatic improving.

For VC roller skin pass mill group, in process of production, the parameter of setting is needed to mainly contain three classes: (1) roller system parameter: mainly comprise the static roller system parameters such as the roll shape curve of the roller system dynamic parameter such as the work roll bending power of skin pass mill group, VC roller oil pressure and working roll and backing roll, work roll surface roughness; (2) metal pattern parameter: mainly comprise draught pressure and front and back tension force; (3) technological lubrication system: mainly comprise the quality of leveling precision, flow, concentration and initial temperature etc.

And the index of smooth rear product needed examination generally has three kinds: (1) plate shape; (2) mechanical performance; (3) belt steel surface roughness.

In the past, at the scene in production process, under the prerequisite that technological lubrication system is given, the control of plate shape and belt steel surface roughness is almost placed one's entire reliance upon roller system parameter, the setting of metal pattern parameter is then often main it is considered that mechanical performance problems, then considers less to plate shape and belt steel surface roughness.

In fact, for VC roller skin pass mill group, be not the result of roller system parameter independent role the plate shape of finished product band and belt steel surface roughness, and closely related with metal pattern parameter.

Although the optimization of the roller system parameter such as roll shape curve, work roll surface roughness of the work roll bending power of skin pass mill group, VC roller oil pressure, working roll and backing roll can change exit plate shape and the surface roughness of unit band largely, but this change is based on specific metal pattern parameter, and the degree that can change is limited instead of unlimited.If metal pattern setting parameter is seriously unreasonable, beyond the limit of power that roller system parameter can regulate and control, so will generates underproof product, cause degradation, bring larger economic loss to unit.Such as, if draught pressure and tension force set unreasonable, make percentage elongation get lower limit under the prerequisite meeting mechanical performance, just likely make the replication rate of roughness on the low side, thus cause finished product roughness less than normal.Especially, for wet jetting piles rolling, the setting of metal pattern parameter is except must considering the quality index such as plate shape, mechanical performance, surface roughness, also rolling stability must be considered, can not occur the problems such as skidding, vibration, this is and the different place of dry skin pass rolling, and often easily ignore by scene, cause rolling unstable, influence of rolled efficiency and product quality.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process, it is under the prerequisite ensureing product mechanical performance, fully in conjunction with the apparatus characteristic of VC roller skin pass mill group and the process characteristic of wet jetting piles rolling, not only consider the mechanical performance of product and the control problem of plate shape and surface quality, and take into account rolling stability, can improve the quality of products while guarantee production efficiency.

Technical scheme of the present invention is: provide a kind of tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process, be included in the setting carrying out relevant parameter in the computer for controlling of planisher, described computer for controlling is according to the related data obtained from its input equipment or higher level's computer or production plan, according to presetting control model, method or setup parameter, control each operational factor of planisher; It is characterized in that described synthetic setting method comprises the following steps:

A () collects the apparatus characteristic parameter of VC roller skin pass mill group;

B () collects the crucial rolling technological parameter of the band treating synthetic setting metal pattern parameter;

C () collects the key quality parameters treating the band of synthetic setting metal pattern parameter;

D dynamic roller system parameter is set in ground state by ();

(e) setting draught pressure initial value rear tensile stress initial value front tensile stress initial value slip factor initial value ψ ₀and optimizing step delta P, Δ σ ₀, Δ σ ₁;

(f) setting roll-force optimizing pilot process parameter k ₁, and make k ₁=1;

G () makes roll-force P=P ₀+ k ₁Δ P;

Tensile stress optimizing pilot process parameter k after (h) setting ₂, and make k ₂=1;

(i) tensile stress σ after order ₀=σ ₀₀+ k ₂Δ σ ₀

Tensile stress optimizing pilot process parameter k before (j) setting ₃, and make k ₃=1;

Tensile stress σ before (k) order ₁=σ ₁₀+ k ₃Δ σ ₁;

L () calculates the percentage elongation ε under current roll-force, front and back tensile stress;

M () judges inequality ε _min< ε < ε _maxset up? as set up, then proceed to step (n); Otherwise, proceed to step (u);

N () calculates outlet band steel roughness Ra _s, its calculation expression is

${\mathrm{Ra}}_s={\mathrm{\&eta;}}_1(1-a_{h}H-a_h^{\&prime;}{H}^2)e^{a_{\mathrm{\&epsiv;}}{\mathrm{\&epsiv;}}_i}{\mathrm{Ra}}_r{e}^{B_{L}L}+{\mathrm{\&eta;}}_2\mathrm{th}\left({\mathrm{\&beta;}}_k{h}_i\right)e^{{\mathrm{\&beta;}}_k{\mathrm{\&sigma;}}_s}\mathrm{th}\left({\mathrm{\&beta;}}_{\mathrm{\&epsiv;}}\mathrm{\&epsiv;}\right){\mathrm{Ra}}_{s0};$

O () judges inequality R a _min<Ra _s<Ra _maxset up? as set up, then proceed to step (p), otherwise, proceed to step (u);

P () utilizes roll elastic deformation model to calculate toe-out stress distribution σ _1i;

Q () judges inequality does (wherein, E is the elastic modelling quantity of band, v is the Poisson's ratio of band) set up? as set up, then proceed to step (t), otherwise, proceed to step (r);

R () calculates the value of slip factor ψ;

S () judges inequality ψ < ψ ₀set up? if set up, then make ψ ₀=ψ, optimum roll-force P _y=P, optimum backward pull σ _0y=σ ₀, optimum forward pull σ _1y=σ ₁, proceed to step (t); Otherwise, directly proceed to step (t);

T () judges inequality set up? if inequality is set up, then make k ₃=k ₃+ 1 proceeds to step (k); Otherwise proceed to step (u);

U () judges inequality set up? if inequality is set up, then make k ₂=k ₂+ 1 proceeds to step (i); Otherwise proceed to step (v);

(v) judge inequality set up? if inequality is set up, then make k ₁=k ₁+ 1 proceeds to step (g); Otherwise proceed to step (w);

W () exports optimum roll-force P _y, optimum after tensile stress σ _0y, optimum before tensile stress σ _1y.

Concrete, the apparatus characteristic parameter of described VC roller skin pass mill group, at least comprises working roll and backing roll diameter D _w, D _b, working roll and backing roll original roller type Distribution Value Δ D _wi, Δ D _bi, working roll and backing roll barrel length L ₁, L ₂, inside and outside working roll roll-bending cylinder apart from L ₂₁, l ₂₂, housing screw center square l ₁, inside and outside roller allows maximum positive bending roller force with the maximum negative bending roller force that inside and outside roller allows with vC roller maximum oil pressure p allowable _max, draught pressure allow maximum P _max, working roll roll surface roughness setting value Ra _r, working roll rolling milimeter number L, exit plate surface roughness roll copying part mid frame band inlet thickness influence coefficient a _h, a _h', the inlet thickness influence coefficient β of rack outlet plate surface roughness heredity part mid frame band _h, rack outlet plate surface roughness heredity part and the material influence coefficient a of last frame band in copying part _k, β _k, rack outlet plate surface roughness heredity part and percentage elongation rate influence coefficient α in roll copying part _ε, β _εwith unit equipment properties influence parameter η ₁, η ₂.

Collect the crucial rolling technological parameter of the band treating synthetic setting metal pattern parameter described in it, at least comprise the thickness cross direction profiles value H of strip material _i, supplied materials roughness Ra _s0, incoming profile cross direction profiles value L _i, the tensile stress lower limit σ that specifies of the width B of band, product mix _minwith the tensile stress higher limit σ that product mix specifies _max.

Further, the cross direction profiles value L of the incoming profile described in it _ivalue, if there is the actual plate shape value shown by sour rolling mill plate profile instrument, just get actual plate shape value; If there is no actual value, then think that incoming profile is good.

More specifically, if described incoming profile is good, then get the cross direction profiles value L of incoming profile _i=0.

Treat the key quality parameters of the band of synthetic setting metal pattern parameter described in it, at least comprise the maximum plate shape SHAPE* of permission; The maximum percentage elongation ε allowed _max; The minimum percentage elongation ε allowed _min; The maximum permissible value Ra of belt steel surface roughness _smaxwith the minimum permissible value Ra of belt steel surface roughness _smin.

Dynamic roller system parameter described in it is set in ground state, comprises following settings step

VC roller oil pressure p is set to

By interior bending roller force S ₁be set to

By outer bending roller force S ₂be set to

Described synthetic setting method is under the prerequisite ensureing product mechanical performance, adopt Comprehensive Control product mechanical performance, plate shape, surface quality take into account the method for rolling stability, fully in conjunction with the apparatus characteristic of VC roller skin pass mill group and the process characteristic of wet jetting piles rolling, not only consider the mechanical performance of product and the control problem of plate shape and surface quality, and take into account rolling stability, while guarantee production efficiency, can improve the quality of products.

Described synthetic setting method " using stable for rolling as optimization object function, using production board shape and mechanical performance and surface roughness all qualified " as under the prerequisite of constraints, the metal pattern parameter of three parts such as draught pressure and front and back tension force is integrally coordinated to set, by system optimizing pattern, while guarantee production efficiency, improve the quality of products.

Compared with the prior art, advantage of the present invention is:

1. adopt Comprehensive Control product mechanical performance, plate shape, surface quality take into account the method for rolling stability first, under the prerequisite ensureing product mechanical performance, fully in conjunction with the apparatus characteristic of VC roller skin pass mill group and the process characteristic of wet jetting piles rolling, not only consider the mechanical performance of product and the control problem of plate shape and surface quality, and take into account rolling stability;

2. can improve the Comprehensive Control ability of product mechanical performance, plate shape and surface quality;

3. ensure that rolling is stablized, ensure that production efficiency.

Accompanying drawing explanation

Fig. 1 is the process blocks schematic diagram of synthetic setting method of the present invention;

Fig. 2 is the tensile stress schematic diagram adopting technical solution of the present invention to symbolize oralia shape in embodiment;

Fig. 3 is the tensile stress schematic diagram adopting conventional solution to symbolize oralia shape in embodiment;

Fig. 4 is the tensile stress schematic diagram adopting technical solution of the present invention to symbolize oralia shape in another embodiment;

Fig. 5 is the tensile stress schematic diagram adopting conventional solution to symbolize oralia shape in another embodiment.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention will be further described.

In Fig. 1, technical scheme of the present invention provides a kind of tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process, be included in the setting carrying out relevant parameter in the computer for controlling of planisher, described computer for controlling is according to the related data obtained from its input equipment or higher level's computer or production plan, according to presetting control model, method or setup parameter, control each operational factor of planisher; It is characterized in that described synthetic setting method comprises the following steps:

A () collects the apparatus characteristic parameter of VC roller skin pass mill group;

B () collects the crucial rolling technological parameter of the band treating synthetic setting metal pattern parameter;

C () collects the key quality parameters treating the band of synthetic setting metal pattern parameter;

D dynamic roller system parameter is set in ground state by ();

(e) setting draught pressure initial value rear tensile stress initial value front tensile stress initial value slip factor initial value ψ ₀and optimizing step delta P, Δ σ ₀, Δ σ ₁;

(f) setting roll-force optimizing pilot process parameter k ₁, and make k ₁=1;

G () makes roll-force P=P ₀+ k ₁Δ P;

Tensile stress optimizing pilot process parameter k after (h) setting ₂, and make k ₂=1;

(i) tensile stress σ after order ₀=σ ₀₀+ k ₂Δ σ ₀

Tensile stress optimizing pilot process parameter k before (j) setting ₃, and make k ₃=1;

Tensile stress σ before (k) order ₁=σ ₁₀+ k ₃Δ σ ₁;

L () calculates the percentage elongation ε under current roll-force, front and back tensile stress;

M () judges inequality ε _min< ε < ε _maxset up? as set up, then proceed to step (n); Otherwise, proceed to step (u);

N () calculates outlet band steel roughness Ra _s, its calculation expression is

${\mathrm{Ra}}_s={\mathrm{\&eta;}}_1(1-a_{h}H-a_h^{\&prime;}{H}^2)e^{a_{\mathrm{\&epsiv;}}{\mathrm{\&epsiv;}}_i}{\mathrm{Ra}}_r{e}^{B_{L}L}+{\mathrm{\&eta;}}_2\mathrm{th}\left({\mathrm{\&beta;}}_k{h}_i\right)e^{{\mathrm{\&beta;}}_k{\mathrm{\&sigma;}}_s}\mathrm{th}\left({\mathrm{\&beta;}}_{\mathrm{\&epsiv;}}\mathrm{\&epsiv;}\right){\mathrm{Ra}}_{s0};$

O () judges inequality R a _min<Ra _s<Ra _maxset up? as set up, then proceed to step (p), otherwise, proceed to step (u);

P () utilizes roll elastic deformation model to calculate toe-out stress distribution σ _1i;

Q () judges inequality does (wherein, E is the elastic modelling quantity of band, v is the Poisson's ratio of band) set up? as set up, then proceed to step (t), otherwise, proceed to step (r);

R () calculates the value of slip factor ψ;

S () judges inequality ψ < ψ ₀set up? if set up, then make ψ ₀=ψ, optimum roll-force P _y=P, optimum backward pull σ _0y=σ ₀, optimum forward pull σ _1y=σ ₁, proceed to step (t); Otherwise, directly proceed to step (t);

T () judges inequality set up? if inequality is set up, then make k ₃=k ₃+ 1 proceeds to step (k); Otherwise proceed to step (u);

U () judges inequality set up? if inequality is set up, then make k ₂=k ₂+ 1 proceeds to step (i); Otherwise proceed to step (v);

(v) judge inequality set up? if inequality is set up, then make k ₁=k ₁+ 1 proceeds to step (g); Otherwise proceed to step (w);

W () exports optimum roll-force P _y, optimum after tensile stress σ _0y, optimum before tensile stress σ _1y.

Concrete, the apparatus characteristic parameter of described VC roller skin pass mill group, at least comprises work roll diameter D _wwith backing roll diameter D _b, working roll original roller type Distribution Value Δ D _wiwith backing roll original roller type Distribution Value Δ D _bi, working roll barrel length L ₁with backing roll barrel length L ₂, in working roll roll-bending cylinder apart from l ₂₁, the outer roll-bending cylinder of working roll is apart from l ₂₂, housing screw center square l ₁, interior roller allows maximum positive bending roller force and outer roller allows maximum positive bending roller force the maximum negative bending roller force that interior roller allows and the maximum negative bending roller force that outer roller allows vC roller maximum oil pressure p allowable _max, draught pressure allow maximum P _max, working roll roll surface roughness setting value Ra _r, working roll rolling milimeter number L, exit plate surface roughness roll copying part mid frame band inlet thickness influence coefficient a _h, a _h', the inlet thickness influence coefficient β of rack outlet plate surface roughness heredity part mid frame band _h, rack outlet plate surface roughness heredity part and the material influence coefficient a of last frame band in copying part _k, β _k, rack outlet plate surface roughness heredity part and percentage elongation rate influence coefficient α in roll copying part _ε, β _εwith unit equipment properties influence parameter η ₁, η ₂.

Collect the crucial rolling technological parameter of the band treating synthetic setting metal pattern parameter described in it, at least comprise the thickness cross direction profiles value H of strip material _i, supplied materials roughness Ra _s0, incoming profile cross direction profiles value L _i, the tensile stress lower limit σ that specifies of the width B of band, product mix _minwith the tensile stress higher limit σ that product mix specifies _max.

Further, the cross direction profiles value L of the incoming profile described in it _ivalue, if there is the actual plate shape value shown by sour rolling mill plate profile instrument, just get actual plate shape value; If there is no actual value, then think that incoming profile is good.

More specifically, if described incoming profile is good, then get the cross direction profiles value L of incoming profile _i=0.

Treat the key quality parameters of the band of synthetic setting metal pattern parameter described in it, at least comprise the maximum plate shape SHAPE* of permission; The maximum percentage elongation ε allowed _max; The minimum percentage elongation ε allowed _min; The maximum permissible value Ra of belt steel surface roughness _smaxwith the minimum permissible value Ra of belt steel surface roughness _smin.

Dynamic roller system parameter described in it is set in ground state, comprises following settings step

VC roller oil pressure p is set to

By interior bending roller force S ₁be set to

By outer bending roller force S ₂be set to

Described synthetic setting method is under the prerequisite ensureing product mechanical performance, adopt Comprehensive Control product mechanical performance, plate shape, surface quality take into account the method for rolling stability, fully in conjunction with the apparatus characteristic of VC roller skin pass mill group and the process characteristic of wet jetting piles rolling, not only consider the mechanical performance of product and the control problem of plate shape and surface quality, and take into account rolling stability, while guarantee production efficiency, can improve the quality of products.

Described synthetic setting method " using stable for rolling as optimization object function, using production board shape and mechanical performance and surface roughness all qualified " as under the prerequisite of constraints, the metal pattern parameter of three parts such as draught pressure and front and back tension force is integrally coordinated to set, while guarantee production efficiency, improve the quality of products.

Because this block diagram adopts standard drawing standard and pattern of annotated information in the industry to draw, those skilled in the art understands its implication and statement with can having no contrary opinion completely, therefore the concrete meaning of each step flow process is no longer carefully stated.

Professional knowledge in the device structure/formation, skin pass rolling technique etc. of skin pass mill group, " skin pass rolling the process modeling " (work such as Bai Zhenhua, Liu Hongmin can published with reference to metallurgical industry publishing house, on January 1st, 2010, the 1st edition), no longer describe at this.

Prior art often can only to product mechanical performance, plate shape, surface quality wherein one control separately, the present invention is then not enough for this, adopt Comprehensive Control product mechanical performance, plate shape, surface quality take into account the method for rolling stability first, will produce two beneficial effects below: the Comprehensive Control ability of (1) raising product mechanical performance, plate shape and surface quality; (2) ensure that rolling is stablized, ensure that production efficiency.

The 1550CAL skin pass mill group of applicant place enterprise, in wet jetting piles transformation process, adopts the technical program to be optimized setting to roll-force and front and back tension force, through scene application, respond well.

Its spot sampling check result is as shown in table 1, this table shows the sampling observation value of execute-in-place work in the XX X month 15 to the X month 30 to 80 coiled strips after this unit adopts technical scheme described in this patent.

Table 1 spot sampling check result

Sequence number	Entrance reel number	Percentage elongation/%	Roughness/um	Wave high/mm	Wave distance/mm	Suddenly degree of completing/%	Slippery conditions	Up to standard
									1	108676600	0.99	1.37	2	300	0.67	Nothing	Be
2	108676400	1.18	1.32	2	300	0.67	Nothing	Be
									3	108676300	1.19	1.15	2	300	0.67	Nothing	Be
4	536214000	0.48	0.94	2	300	0.67	Nothing	Be
									5	108667200	0.51	0.91	2	400	0.50	Nothing	Be
6	109130700	0.98	1.2	2	300	0.67	Nothing	Be
									7	536355000	0.64	1.12	1	320	0.31	Nothing	Be
8	536355100	0.47	1.20	1	300	0.33	Nothing	Be
									9	322902000	0.98	1.26	1.5	300	0.50	Nothing	Be
10	109221000	1.18	1.12	2.2	350	0.63	Nothing	Be
									11	109584300	1.18	1.08	2.5	400	0.63	Nothing	Be
12	109258000	1.17	1.05	2.5	380	0.66	Nothing	Be
									13	109216500	0.98	0.85	2	280	0.71	Nothing	Be
14	108917500	0.62	1.13	2	400	0.50	Nothing	Be

15	322907200	1.14	1.21	1	400	0.25	Nothing	Be
									16	109584200	1.17	1.26	2.3	420	0.55	Nothing	Be
17	109220800	1.18	1.27	2	400	0.50	Nothing	Be
									18	536255200	0.65	1.19	2	300	0.67	Nothing	Be
19	536229900	0.76	1.02	2	300	0.67	Nothing	Be
									20	536230000	0.79	1.04	2.5	300	0.83	Nothing	Be
21	536300710	0.79	1.06	2.5	330	0.76	Nothing	Be
									22	210930900	0.78	1.11	2	300	0.67	Nothing	Be
23	210939800	0.78	1.15	2	300	0.67	Nothing	Be
									24	210939700	0.77	1.05	2.5	330	0.76	Nothing	Be
25	210931400	0.79	0.95	2.2	280	0.79	Nothing	Be
									26	210931600	0.79	1.01	2	300	0.67	Nothing	Be
27	210939620	0.78	1.03	2.2	280	0.79	Nothing	Be
									28	210931700	0.72	1.02	2.8	300	0.93	Nothing	Be
29	210930800	0.79	1.1	2.2	280	0.79	Nothing	Be
									30	536349010	0.70	0.95	2.8	350	0.80	Nothing	Be
31	323369400	0.98	1.03	2.2	300	0.73	Nothing	Be
									32	536640100	0.98	1.07	2.2	280	0.79	Nothing	Be
33	536639900	0.99	1.2	2.2	280	0.79	Nothing	Be
									34	322900900	0.79	0.97	3	400	0.75	Nothing	Be
35	323370700	0.78	0.99	3	400	0.75	Nothing	Be
									36	322901000	0.78	0.91	3	400	0.75	Nothing	Be
37	323370300	0.98	0.95	3	400	0.75	Nothing	Be
									38	323370000	0.97	0.91	3	400	0.75	Nothing	Be
39	322900700	0.98	1.30	2.5	400	0.63	Nothing	Be
									40	323369500	0.98	1.20	3	400	0.75	Nothing	Be
41	323369600	0.98	1.20	3	400	0.75	Nothing	Be
									42	323369900	0.97	1.10	3	400	0.75	Nothing	Be
43	210927100	0.78	1.12	3.1	325	0.95	Nothing	Be
									44	210927720	0.72	1.03	3	320	0.94	Nothing	Be
45	210927500	0.71	1.13	3	310	0.97	Nothing	Be
									46	210926300	0.78	1.08	2.8	300	0.93	Nothing	Be

47	210926500	0.78	1.17	2.8	300	0.93	Nothing	Be
									48	210926000	0.79	0.91	2.9	320	0.91	Nothing	Be
49	210929400	0.69	1.11	3	350	0.86	Nothing	Be
									50	210929100	0.97	1.15	2	300	0.67	Nothing	Be
51	211122400	0.79	0.95	3.0	380	0.92	Nothing	Be
									52	210929500	0.79	1.03	3.0	400	0.88	Nothing	Be
53	210929200	0.97	1.23	2	300	0.67	Nothing	Be
									54	210927800	0.79	1.20	3	400	0.75	Nothing	Be
55	211122200	0.78	0.95	2	300	0.67	Nothing	Be
									56	211122100	0.79	0.99	2	300	0.67	Nothing	Be
57	535983600	0.97	0.88	2	300	0.67	Nothing	Be
									58	535848200	0.77	0.89	2.5	280	0.89	Nothing	Be
59	535983500	0.99	1.07	2	300	0.67	Nothing	Be
									60	323386300	1.19	0.85	2	300	0.67	Nothing	Be
61	323386100	1.39	0.91	2	300	0.67	Nothing	Be
									62	323386400	1.18	0.93	2	300	0.67	Nothing	Be
63	109599200	1.14	1.05	2	300	0.67	Nothing	Be
									64	323386200	1.26	1.03	2	300	0.67	Nothing	Be
65	536812100	0.79	1.07	2	300	0.67	Nothing	Be
									66	323385800	1.38	1.10	2	300	0.67	Nothing	Be
67	323386000	1.37	1.12	2	300	0.67	Nothing	Be
									68	536150600	0.98	1.25	2.5	300	0.83	Nothing	Be
69	210930700	0.81	1.21	2.5	300	0.83	Nothing	Be
									70	109682500	1.39	1.08	2.2	300	0.73	Nothing	Be
71	110003100	1.19	1.10	3	400	0.75	Nothing	Be
									72	110003400	1.20	1.25	2	400	0.50	Nothing	Be
73	536615900	1.19	1.07	2	400	0.50	Nothing	Be
									74	110003500	1.19	1.21	2	400	0.50	Nothing	Be
75	323388800	1.19	1.08	1	300	0.33	Nothing	Be
									76	536858000	0.79	1.01	1.1	330	0.33	Nothing	Be
77	323390200	0.89	0.87	2	350	0.57	Nothing	Be
									78	323388700	1.20	1.03	1	320	0.31	Nothing	Be

79	323387300	1.39	1.12	1	300	0.33	Nothing	Be
									80	110048400	1.18	1.05	2	300	0.67	Nothing	Be

Can be found out by table 1, after adopting technical scheme described in the application, product percentage elongation, roughness, plate shape three indexs all reach user's requirement, and ensure that the object of stable rolling.

In order to the application process of further instruction correlation technique of the present invention, existing for the 1550VC skin pass mill group of applicant enterprise, introduce the control procedure of 1550VC skin pass mill group tandem mills soft reduction process in detail.

Embodiment 1

Adopt block flowsheet shown in Fig. 1.

In step (a)., collect the apparatus characteristic parameter of VC roller skin pass mill group, mainly comprise:

Work roll diameter DW and backing roll diameter Db is respectively:

D _w=530mm,D _b=1400mm；

Working roll original roller type Distribution Value Δ D _wiwith backing roll original roller type Distribution Value Δ D _bibe respectively:

ΔD _wi=0,ΔD _bi=0；

Working roll barrel length L ₁with backing roll barrel length L ₂be respectively:

L ₁=1650mm,L ₂=1620mm；

In working roll, roll-bending cylinder is apart from l ₂₁and outer roll-bending cylinder is apart from l ₂₂be respectively: l ₂₁=2320mm, l ₂₂=3120mm;

Housing screw center square l ₁=2720mm;

Interior roller allows maximum positive bending roller force and outer roller allows maximum positive bending roller force be respectively:

$S_{1w\max }^{+}=60t,$ $S_{2w\max }^{+}=60t;$

The maximum negative bending roller force that interior roller allows the maximum negative bending roller force that outer roller allows be respectively:

$S_{1w\max }^{+}=60t,$ $S_{2w\max }^{+}=60t;$

VC roller maximum oil pressure p allowable _max=49MPa, working roll roll surface roughness setting value Ra _r=2.2 μm, rolling milimeter number L=359km, draught pressure allows maximum P _max=16000kN;

Clearly, above-mentioned parameter can obtain from the mechanical parameter of equipment or operational factor, and its concrete acquisition pattern no longer describes at this.

In step (b), collect the crucial rolling technological parameter of the band treating synthetic setting plate shape parameter, mainly comprise: the thickness cross direction profiles value Hi=of strip material

{ 0.000898,0.000899,0.000899,0.000900,0.000900,0.000900,0.000900,0.000901,0.000901,0.000901,0.000901,0.000901,0.000901,0.000901,0.000901,0.000901,0.000900,0.000900,0.000900,0.000900,0.000899,0.000899,0.000898}, unit m;

Supplied materials yield limit σ _s=190MPa, supplied materials roughness Ra _s0=0.93 μm, the cross direction profiles value L of plate shape _i=0, the width B=972mm of band, the tension force lower limit σ that product mix (or product technology requirement) specifies _min=24MPa, the tension force higher limit σ that product mix specifies _max=150MPa;

Equally, above-mentioned parameter can obtain from the physical and chemical index test data of incoming band material or Product Process parameter.

In step (c), collect the key quality parameters treating the band of synthetic setting metal pattern parameter, mainly comprise: the maximum plate shape SHAPE*=8 of permission, the maximum percentage elongation ε max=1.0% of permission, the minimum percentage elongation ε of permission _min=0.6%, the maximum permissible value Ra of belt steel surface roughness _smax=1.9 μm, the minimum permissible value Ra of belt steel surface roughness _smin=0.6 μm;

Similar, above-mentioned parameter can obtain from the technological requirement parameter of product.

In step (d), dynamic roller system parameter is set in ground state, mainly comprises:

VC roller oil pressure p is set to (p wherein _maxfor VC roller maximum oil pressure allowable).

Interior bending roller force S ₁be set to (wherein for interior roller allows maximum positive bending roller force, maximum negative bending roller force for interior roller allows).

Outer bending roller force S2 is set to (wherein for outer roller allows maximum positive bending roller force, maximum negative bending roller force for outer roller allows).

It is presetting that the setting of above-mentioned parameter is actually equipment operational factor, lower with.

In process step (e), given draught pressure initial value (P wherein _maxdraught pressure is determined) for maximum.

Rear tensile stress initial value (σ wherein _minfor minimum tensile stress, σ _maxfor maximum tensional stress).

Front tensile stress initial value (σ wherein _minfor minimum tensile stress, σ _maxfor maximum tensional stress).

Slip factor initial value ψ ₀=0.5;

And optimizing step delta P=300kN, Δ σ ₀=5MPa, Δ σ ₁=5Mpa;

In step (f), roll-force optimizing pilot process parameter k is set ₁, and make k ₁=1;

In step (g), roll-force P=2650+500k is made ₁=2950kN;

In step (h), tensile stress optimizing pilot process parameter k after setting ₂, and make k ₂=1;

In step (i), tensile stress σ after order ₀=29+5k ₂=34MPa;

In step (j), tensile stress optimizing pilot process parameter k before setting ₃, and make k ₃=1;

In step (k), tensile stress σ before order ₁=34.8+5k ₃=39.8kN;

In step (l), calculate percentage elongation ε=0.82%;

In step (m), judge ε _min< ε < ε _maxset up? inequality 0.6%≤0.82%≤1.0% is obviously set up, and proceeds to step (n); If be false, then proceed to step (t);

In step (n), calculate outlet band steel roughness:

${\mathrm{Ra}}_s={\mathrm{\&eta;}}_1(1-a_{h}H-a_h^{\&prime;}{H}^2)e^{a_{\mathrm{\&epsiv;}}{\mathrm{\&epsiv;}}_i}{\mathrm{Ra}}_r{e}^{B_{L}L}+{\mathrm{\&eta;}}_2\mathrm{th}\left({\mathrm{\&beta;}}_k{h}_i\right)e^{{\mathrm{\&beta;}}_k{\mathrm{\&sigma;}}_s}\mathrm{th}\left({\mathrm{\&beta;}}_{\mathrm{\&epsiv;}}\mathrm{\&epsiv;}\right){\mathrm{Ra}}_{s0}=1\&CenterDot;08\mathrm{\&mu;m};$

In step (o), judge Ra _min<Ra _s<Ra _maxset up? inequality 0.6<1.08<1.9 obviously sets up, and proceeds to step (p); If be false, then proceed to step (t);

In step (p), calculate toe-out stress distribution σ _1i=

{27.5,28.1,30.1,33.0,36.3,39.6,42.8,45.7,48.1,49.8,50.9,51.3,50.9,49.8,48.1,45.7,42.8,39.6,36.3,33.0,30.1,28.1,27.5}；

In step (q), judge inequality set up? because set up, proceed to step (t); Otherwise, proceed to step (r);

In step (r), calculate slip factor ψ=0.0085;

In step (s), judge inequality ψ < ψ ₀set up? inequality 0.103<0.5 obviously sets up, then make ψ ₀=0.103, optimum roll-force P _y=3150kN, optimum rear tensile stress σ _0y=34MPa, optimum front tensile stress σ _1y=39.8MPa, proceeds to step (t); Otherwise, directly proceed to step (t);

In step (t), judge k ₃does <24 set up? if inequality is set up, then make k ₃=k ₃+ 1 proceeds to step (k); Otherwise proceed to step (u);

In step (u), judge inequality k ₂does <23 set up? if inequality is set up, then make k ₂=k ₂+ 1 proceeds to step (i); Otherwise proceed to step (v);

Step (v) in, judge inequality k ₁does <44 set up? if inequality is set up, then make k ₁=k ₁+ 1 proceeds to step (g); Otherwise proceed to step (w);

In step (w), export optimum roll-force P _y=3250kN, optimum rear tensile stress σ _0y=39MPa, optimum front tensile stress σ _1y=44.8MPa.

In addition, the implication of each design parameter or conventional letter in above steps, all according to existing standard in the industry or national regulations, therefore the implication of each parameter and letter thereof is no longer carefully stated at this, those skilled in the art is according to its professional ABC had and conventional equipment operating experience, and that can have no contrary opinion completely learns its implication and representative parameter thereof.

Finally, conveniently compare, list respectively and adopt the tension force of technical scheme of the present invention and draught pressure synthetic setting control method with when adopting conventional solution to control, symbolize the tensile stress situation of oralia shape as shown in Figure 2 and Figure 3; List percentage elongation when adopting tension force of the present invention and draught pressure synthetic setting control method and adopt conventional solution to control, roughness, plate shape, slippery conditions are as shown in table 2.

As can be seen from Fig. 2, Fig. 3, after adopting tension force of the present invention and draught pressure synthetic setting control method, the tensile stress unevenness symbolizing oralia shape drops to 0.50 from 0.94, and strip shape quality obtains larger raising.

Table 2

Control item	Standard value	Optimization method of the present invention	Conventional solution
				Percentage elongation/%	0.8	0.82	0.84
Roughness/μm	1.0	1.05	1.20
				Slip factor	0	0.0065	0.020

Found by the contrast of table 2 related data, this tension force and draught pressure synthetic setting control method can significantly improve the control accuracy of production scene to percentage elongation, roughness and slip factor, thus while improving the quality of products, effectively ensure that production efficiency, for enterprise brings good economic benefit.

" optimizing step-length " is the term in " Parameter Optimization System ", and systematic parameter optimizing refers under one group of constraints, finds one group of parameter of certain system, makes given index reach the method for optimal value (very big or minimum).It is widely used in system analysis, comprehensive with to design.

The basic step of systematic parameter optimization method is: 1. given one group of initial parameter, and calculates by the method for emulation the index that system reaches under this parameter; 2. on some search directions, find one group of new parameter according to certain rule, the distance between it and initial parameter is called optimizing step-length; New argument must meet constraints.3. calculate by the method for emulation the index that system reaches under new argument again.4. judge whether new argument has made index reach optimal value; If not yet reached, then continue again to find again, until make index reach optimal value by this group new argument.The efficiency of optimizing not only depends on and the rule determining search direction and optimizing step-length also depends on the efficiency of emulation.

The algorithm of systematic parameter optimizing derives from the Iteration Method of Non-Linear Programming mostly, as interval elimination approach, interpolation method, simplex method, conjugate gradient method etc.The optimum variance that it can select optimizing step-length to distribute adaptively in searching process, and the optimizing step-length variance detecting local optimum periodically, thus find the new region of improvement, reduce the probability falling into local extremum.

Embodiment 2

First, in step (a)., collect the apparatus characteristic parameter of VC roller skin pass mill group, mainly comprise: working roll and backing roll diameter D _w=510mm, D _b=1400mm; Working roll and backing roll original roller type Distribution Value Δ D _wi=0, Δ D _bi=0; Working roll and backing roll barrel length L ₁=1650mm, L ₂=1620mm; Inside and outside working roll, roll-bending cylinder is apart from l ₂₁=2320mm, l ₂₂=3120mm; Housing screw center square l ₁=2720mm; Inside and outside roller allows maximum positive bending roller force the maximum negative bending roller force that inside and outside roller allows vC roller maximum oil pressure p allowable _max=49MPa, working roll roll surface roughness setting value Ra _r=2.2 μm, rolling milimeter number L=255km, draught pressure allows maximum P _max=16000kN;

In step (b), collect the crucial rolling technological parameter of the band treating synthetic setting plate shape parameter, mainly comprise: the thickness cross direction profiles value Hi=of strip material

{ 0.000604,0.000605,0.000605,0.000606,0.000606,0.000606,0.000606,0.000607,0.000607,0.000607,0.000607,0.000607,0.000607,0.000607,0.000607,0.000607,0.000606,0.000606,0.000606,0.000606,0.000605,0.000605,0.000604}, unit m;

Supplied materials yield limit σ _s=250MPa, supplied materials roughness Ra _s0=0.97 μm, the cross direction profiles value L of plate shape _i=0, the width B=1021mm of band, the tension force lower limit σ that product mix specifies _min=24MPa, the tension force higher limit σ that product mix specifies _max=150MPa;

In step (c), collect the key quality parameters treating the band of synthetic setting metal pattern parameter, mainly comprise: the maximum plate shape SHAPE*=8 of permission; The maximum percentage elongation ε allowed _max=1.2%; The minimum percentage elongation ε allowed _min=0.8%; The maximum permissible value Ra of belt steel surface roughness _smax=1.9 μm; The minimum permissible value Ra of belt steel surface roughness _smin=0.6 μm;

In step (d), dynamic roller system parameter is set in ground state, mainly comprises: VC roller oil pressure p is set to interior bending roller force S ₁be set to outer bending roller force S ₂be set to

In process step (e), given draught pressure initial value rear tensile stress initial value front tensile stress initial value slip factor initial value ψ ₀=0.5 and optimizing step delta P=300kN, Δ σ ₀=5MPa, Δ σ ₁=5Mpa;

In step (f), roll-force optimizing pilot process parameter k is set ₁, and make k ₁=1;

In step (g), roll-force P=2650+500k is made ₁=2950kN;

In step (h), tensile stress optimizing pilot process parameter k after setting ₂, and make k ₂=1;

In step (i), tensile stress σ after order ₀=29+5k ₂=34MPa;

In step (j), tensile stress optimizing pilot process parameter k before setting ₃, and make k ₃=1;

In step (k), tensile stress σ before order ₁=34.8+5k ₃=39.8MPa;

In step (l), calculate percentage elongation ε=0.75%;

In step (m), judge inequality ε _min< ε < ε _maxset up? inequality 0.8%≤0.75%≤1.2% is obviously false, then proceed to step (t); Through repeatedly circulating, until when P=3750kN, t0=49MPa, t1=59.8MPa, ε=0.81% makes inequality ε _min< ε < ε _maxset up, then proceed to step (n);

In step (n), calculate outlet band steel roughness

${\mathrm{Ra}}_s={\mathrm{\&eta;}}_1(1-a_{h}H-a_h^{\&prime;}{H}^2)e^{a_{\mathrm{\&epsiv;}}{\mathrm{\&epsiv;}}_i}{\mathrm{Ra}}_r{e}^{B_{L}L}+{\mathrm{\&eta;}}_2\mathrm{th}\left({\mathrm{\&beta;}}_k{h}_i\right)e^{{\mathrm{\&beta;}}_k{\mathrm{\&sigma;}}_s}\mathrm{th}\left({\mathrm{\&beta;}}_{\mathrm{\&epsiv;}}\mathrm{\&epsiv;}\right){\mathrm{Ra}}_{s0}=1.13\mathrm{\&mu;m};$

In step (o), judge inequality R a _min<Ra _s<Ra _maxset up? inequality 0.6<1.13<1.9, obviously sets up, and proceeds to step (p); If be false, then proceed to step (t);

In step (p), calculate toe-out stress distribution σ _1i=

{45.0,47.2,49.8,52.8,55.9,59.0,61.9,64.5,66.7,68.6,69.9,70.7,71.0,70.7,69.9,68.6,66.7,64.5,61.9,59.0,55.9,52.8,49.8,47.2,45.0}；

In step (q), judge inequality set up? because inequality is set up, proceed to step (t); Otherwise, proceed to step (r);

In step (r), calculate slip factor ψ=0.0064;

In step (s), judge inequality ψ < ψ ₀set up? inequality 0.094<0.5 obviously sets up, then make ψ ₀=0.094, optimum roll-force P _y=3750kN, optimum rear tensile stress σ _0y=49MPa, optimum front tensile stress σ _1y=59.8MPa, proceeds to step (t); Otherwise, directly proceed to step (t);

In step (t), judge k ₃does <24 set up? if inequality is set up, then make k ₃=k ₃+ 1 proceeds to step (k); Otherwise proceed to step (u);

In step (u), judge inequality k ₂does <23 set up? if inequality is set up, then make k ₂=k ₂+ 1 proceeds to step (i); Otherwise proceed to step (v);

Step (v) in, judge inequality k ₁does <44 set up? if inequality is set up, then make k ₁=k ₁+ 1 proceeds to step (g); Otherwise proceed to step (w);

Finally, in step (w), export optimum roll-force P _y=4450kN, optimum rear tensile stress σ _0y=89MPa, optimum front tensile stress σ ₁y=114.8MPa.

Conveniently compare, list respectively and adopt technical scheme of the present invention with when adopting conventional solution to control, symbolize the tensile stress situation of oralia shape as shown in Figure 4, Figure 5; List percentage elongation when adopting tension force of the present invention and draught pressure synthetic setting control method and adopt conventional solution to control, roughness, plate shape, slippery conditions are as shown in table 3.

As can be seen from Fig. 4, Fig. 5, after adopting tension force of the present invention and draught pressure synthetic setting method, the tensile stress unevenness symbolizing oralia shape drops to 0.23 from 0.38, and strip shape quality obtains larger raising.

In addition, found by the contrast of table 3 related data, tension force of the present invention and draught pressure synthetic setting control method can significantly improve the control accuracy of production scene to percentage elongation, roughness and slip factor.

Table 3

Control item	Desired value	Optimization method of the present invention	Conventional solution
				Percentage elongation/%	1.0	0.98	1.09
Roughness/μm	1.0	1.03	1.18
				Slip factor	0	0.0064	0.023

All the other are with embodiment 1.

Because the present invention adopts Comprehensive Control product mechanical performance, plate shape, surface quality take into account the method for rolling stability, by system optimizing pattern, setting is optimized to roll-force and front and back tension force, under the prerequisite ensureing product mechanical performance, fully in conjunction with the apparatus characteristic of VC roller skin pass mill group and the process characteristic of wet jetting piles rolling, not only can improve the Comprehensive Control ability of product mechanical performance, plate shape and surface quality, and ensure that rolling is stablized, while guarantee production efficiency, can improve the quality of products.

Tension force and the draught pressure synthetic setting method of the technical program can significantly improve the control accuracy of production scene to percentage elongation, roughness and slip factor, thus while improving the quality of products, effectively ensure that production efficiency, for enterprise brings good economic benefit.

The present invention can be widely used in operation or the control field of VC roller skin pass mill group rolling process, has good popularizing application prospect.

Claims (5)

1. tension force and draught pressure synthetic setting method in a VC roller planisher wet jetting piles process, be included in the setting carrying out relevant parameter in the computer for controlling of planisher, described computer for controlling is according to the related data obtained from its input equipment or higher level's computer or production plan, according to presetting control model, method or setup parameter, control each operational factor of planisher; It is characterized in that described synthetic setting method comprises the following steps:

A () collects the apparatus characteristic parameter of VC roller skin pass mill group;

B () collects the crucial rolling technological parameter of the band treating synthetic setting metal pattern parameter;

C () collects the key quality parameters treating the band of synthetic setting metal pattern parameter;

D dynamic roller system parameter is set in ground state by ();

(e) setting draught pressure initial value rear tensile stress initial value front tensile stress initial value slip factor initial value ψ ₀and optimizing step delta P, Δ σ ₀, Δ σ ₁;

(f) setting roll-force optimizing pilot process parameter k ₁, and make k ₁=1;

G () makes roll-force P=P ₀+ k ₁Δ P;

Tensile stress optimizing pilot process parameter k after (h) setting ₂, and make k ₂=1;

Tensile stress σ after (i) order ₀=σ ₀₀+ k ₂Δ σ ₀

Tensile stress optimizing pilot process parameter k before (j) setting ₃, and make k ₃=1;

Tensile stress σ before (k) order ₁=σ ₁₀+ k ₃Δ σ ₁;

L () calculates the percentage elongation ε under current roll-force, front and back tensile stress;

M () judges inequality ε _min< ε < ε _maxset up? as set up, then proceed to step (n); Otherwise, proceed to step (u);

N () calculates outlet band steel roughness Ra _s, its calculation expression is

${\mathrm{Ra}}_s={\mathrm{\&eta;}}_1(1-{\mathrm{\&alpha;}}_{h}H-{\mathrm{\&alpha;}}_h^{\&prime;}{H}^2)e^{{\mathrm{\&alpha;}}_k{\mathrm{\&sigma;}}_s}{e}^{{\mathrm{\&alpha;}}_{\mathrm{\&epsiv;}}{\mathrm{\&epsiv;}}_i}{\mathrm{Ra}}_r{e}^{B_{L}L}+{\mathrm{\&eta;}}_{2}th\left({\mathrm{\&beta;}}_k{h}_i\right)e^{{\mathrm{\&beta;}}_k{\mathrm{\&sigma;}}_s}th\left({\mathrm{\&beta;}}_{\mathrm{\&epsiv;}}\mathrm{\&epsiv;}\right){\mathrm{Ra}}_{s0};$

O () judges inequality R a _min<Ra _s<Ra _maxset up? as set up, then proceed to step (p), otherwise, proceed to step (u);

P () utilizes roll elastic deformation model to calculate toe-out stress distribution σ _1i;

Q () judges inequality set up? as set up, then proceed to step (t), otherwise, proceed to step (r);

Wherein, E is the elastic modelling quantity of band, v is the Poisson's ratio of band;

R () calculates the value of slip factor ψ;

S () judges inequality ψ < ψ ₀set up? if set up, then make ψ ₀=ψ, optimum roll-force P _y=P, optimum backward pull σ _0y=σ ₀, optimum forward pull σ _1y=σ ₁, proceed to step (t); Otherwise, directly proceed to step (t);

T () judges inequality set up? if inequality is set up, then make k ₃=k ₃+ 1 proceeds to step (k); Otherwise proceed to step (u);

U () judges inequality set up? if inequality is set up, then make k ₂=k ₂+ 1 proceeds to step (i); Otherwise proceed to step (v);

V () judges inequality set up? if inequality is set up, then make k ₁=k ₁+ 1 proceeds to step (g); Otherwise proceed to step (w);

W () exports optimum roll-force P _y, optimum after tensile stress σ _0y, optimum before tensile stress σ _1y;

Wherein, the apparatus characteristic parameter of described VC roller skin pass mill group, at least comprises working roll and backing roll diameter D _w, D _b, working roll and backing roll original roller type Distribution Value Δ D _wi, Δ D _bi, working roll and backing roll barrel length L ₁, L ₂, inside and outside working roll roll-bending cylinder apart from l ₂₁, l ₂₂, housing screw center square l ₁, inside and outside roller allows maximum positive bending roller force with the maximum negative bending roller force that inside and outside roller allows with vC roller maximum oil pressure P allowable _max, draught pressure allow maximum P _max, working roll roll surface roughness setting value Ra _r, working roll rolling milimeter number L, exit plate surface roughness roll copying part mid frame band inlet thickness influence coefficient α _h, α _h', rack outlet plate surface roughness heredity part mid frame band inlet thickness influence coefficient β _h, rack outlet plate surface roughness heredity part and the material influence coefficient α of last frame band in copying part _k, β _k, rack outlet plate surface roughness heredity part and percentage elongation rate influence coefficient α in roll copying part _ε, β _εwith unit equipment properties influence parameter η ₁, η ₂;

The crucial rolling technological parameter of the band of synthetic setting metal pattern parameter is treated in described collection, at least comprises the thickness cross direction profiles value H of strip material _i, supplied materials roughness Ra _s0, incoming profile cross direction profiles value L _i, the tensile stress lower limit σ that specifies of the width B of band, product mix _minwith the tensile stress higher limit σ that product mix specifies _max;

The cross direction profiles value L of described incoming profile _ivalue, if there is the actual plate shape value shown by sour rolling mill plate profile instrument, just get actual plate shape value; If there is no actual value, then think that incoming profile is good; If described incoming profile is good, then get the cross direction profiles value L of incoming profile _i=0.

2., according to tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process according to claim 1, treat the key quality parameters of the band of synthetic setting metal pattern parameter described in it is characterized in that, at least comprise the maximum plate shape SHAPE* of permission; The maximum percentage elongation ε allowed _max; The minimum percentage elongation ε allowed _min; The maximum permissible value Ra of belt steel surface roughness _smaxwith the minimum permissible value Ra of belt steel surface roughness _smin.

3., according to tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process according to claim 1, it is characterized in that described dynamic roller system parameter is set in ground state, comprise following settings step

VC roller oil pressure p is set to

By interior bending roller force S ₁be set to

By outer bending roller force S ₂be set to

4. according to tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process according to claim 1, it is characterized in that described synthetic setting method is under the prerequisite ensureing product mechanical performance, adopt Comprehensive Control product mechanical performance, plate shape, surface quality also takes into account the method for rolling stability, fully in conjunction with the apparatus characteristic of VC roller skin pass mill group and the process characteristic of wet jetting piles rolling, not only consider the mechanical performance of product and the control problem of plate shape and surface quality, and take into account rolling stability, can while guarantee production efficiency, improve the quality of products.

5. according to tension force and draught pressure synthetic setting method in VC roller planisher wet jetting piles process according to claim 1, it is characterized in that described synthetic setting method " using stable for rolling as optimization object function, using production board shape and mechanical performance and surface roughness all qualified " as under the prerequisite of constraints, the metal pattern parameter of draught pressure and front and back tension force three parts is integrally coordinated to set, by system optimizing pattern, while guarantee production efficiency, improve the quality of products.