[0064] In order to make the technical problems, technical solutions and advantages to solve the present invention more clearly, and will be described in detail below with reference to the accompanying drawings and specific examples.
[0065] Such as figure 1 As shown, embodiments of the present invention provide a method of throwing-pickled composite scales process optimization process, including:
[0066] S101, designed multiple shot pills-acid washing complex scales regimen; where each of the stripping-pickled composite scales regimen is different from each other;
[0067] It should be noted that in the present embodiment, the above S101 specifically:
[0068] 1. Determination of strip steel benchmark operation speed ν c;
[0069] 2. According to the formula
[0070] ν i = I × k -1 × ν c
[0071] Each shot-pickled composite scorpion scheme is calculated to obtain each shot-pickled composite scorching scheme.
[0072] among them,
[0073] K indicates the number of throwing-pickled composite scales; K is natural number, satisfying: 10 ≤ k ≤ 20;
[0074] ν i Indicates the speed of the strip of the Iron-Piercing-Acid Washing Composite Scale Scheme;
[0075] i means that the solution reference numeral, i is natural number, satisfied: 1 ≤ i ≤ K.
[0076] Then, according to the speed of the strip of steel, the proceedings are labeled in the order of small to large, and mark as scheme A 1 , Program a 2... Program A i... Program A k;
[0077] 3, the ribbon running speed of each throwing-absorbing composite scales scheme obtained by the above calculations 1 , Ν 2 , Ν 3... k The data is recorded.
[0078] Among them, the measurement strip steel benchmark operation speed ν c Specifically, the following steps:
[0079] The flow rate of the shot blasts is adjusted to the maximum, according to the on-site operation experience, set the initial speed of the strip of steel. 0 The shot blast scales are performed; cutting the strap steel after the shot blasting, preparing a test sample, and determines the purification rate of the observation sample; when the net rate is less than 95%, reduce ν 0 Numerical, repeat the shot blast scales and preparation test sample until the release rate of the observation sample is not less than 95% and less than 100%, 0 The value is the speed of the strip. c.
[0080] S102 determines that the amount of acid required for each of the throwing-pickled composite scales is required;
[0081] It should be noted that in the present embodiment, the S102 specifically includes the following procedure:
[0082] 1. The flow rate of the shot blasts is maximized, according to the calculated strip operation speed ν 1 The actual operating speed of the strip steel is set, and the throwing blasting-pickled composite scales are operated to carry steel and remove the scales, and each of the throwing blasting-pickled composite scales The tape steel after the pellet was cut, and the striped, the striped, and obtained a plurality of samples corresponding to each of the throwing-pickled composite scales, and labeled as a sample B. 1 To sample B k;
[0083] Among them, by striped the cutting surface, the acid solution is only reacted with the steel-containing surface of the shelf, and the iron-based body reflects from the cropped surface.
[0084] 2. The resulting plurality of samples are carried out one by one to obtain the amount of acid with each sample, and the specific steps are:
[0085] A plurality of small acid wash tanks corresponding to the quantity of the sample are taken, and the pickled tank is sequentially labeled. 1 , Sour tank C 2 , Sour tank C 3...... Acid washes C k Take a certain amount of acid solution, determine the percentage of the original acid solution mass, and pour the same acid solution as the mass of the plurality of small pickled tanks; sequentially immerse the sample. In the small acid washing treatment, the pickled treatment is performed. After the scales of the surface of the sample are complete, the release ratio is 100%, and the sample is removed; each small acid after the acid washing experiment is completed. The amount of acid solution mass of the washed tank; according to the formula:
[0086] M i = (Ω 0 ω i ) × m
[0087] Calculate the amount of acid in each sample,
[0088] among them,
[0089] Ω 0 The mass content of the original acid solution;
[0090] Ω i The amount of acid solution mass in the i-chiral tank after pickling experiment;
[0091] M is the quality of pouring the acid solution in each pickling tank;
[0092] M i The amount of the sample corresponding to the i-thovenone-pickled composite scales scheme.
[0093] S103, based on the running speed of the strip steel and the amount of this function, by the cost function, by the cost function, each of the removal costs corresponding to the scales, respectively, according to the cost function;
[0094] Wherein, the expression of the cost function is:
[0095]
[0096] among them,
[0097] α is the energy consumption coefficient of shot blasting system;
[0098] β is acid washing cost coefficient;
[0099] S is the length of the processed steel coil;
[0100] D is the width of the processed steel coil;
[0101] A is the length of the sample;
[0102] b is the width of the pickled sample;
[0103] ν i Tape steel operating speed corresponding to the i-thovenum-pickled composite scorpion scheme;
[0104] M i The amount of the sample corresponding to the i-thovenone-pickled composite scales scheme.
[0105] S104 determines the rampage running speed of the tapered blasting-absorbing composite scales scheme with the lowest scales cost, which uses it as the optimal strip operating speed to achieve the strip of steel.
[0106] It should be noted that when the optimal strip operation is determined, the preamplifier system and the density distribution of the rear pickling system are also determined, and the cost is optimal. After the scales of the stripper system are removed, the steel surface is a fixed value, in the subsequent pickling system, the value of the acid-liquid consumed in the unit area is also a fixed value; the industrial site can be washed according to the acid wash The surface quality detection of the exit end strip steel is adjusted to the main parameters of pickling, forming a controlled closed loop. At present, the surface quality detection and parameter control technology of traditional acid washing lines have been very mature, which is convenient for the on-site application of a throwing-pickled composite scales according to the present invention.
[0107] In the above scheme, the pecker-acid washing complex removal process optimization method can select the optimal tape steel operating speed in minimization of the scales, and select the optimal strip operating speed, thus and efficiently distribute the shot blast system and pickup system. The removed scales ratio, effectively improve the energy efficiency of the system, while reducing the amount of tonge gas solution, and the process optimization method is generally, that is, the process can be processed against different materials, different types of hot rolled steel Method optimization, has a broad market application prospect.
