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Chemical pattern recognition applications in Baosteel


Of phosphorus in silicon 0 ll actinium actinium in the jackals 【il actinium aluminum 0ts temperature to the package, \asked Jazz overheating Chuang seriously overweight protection beetle No. atlas 2Gs41S5 billet classification y1yly · 1 Class No No No 2 capsule with a threatened no 3 Fan has had some analysts found that Ix 'with x Ⅲ x7 and xI,. and l., X · and xz This four pairs of variables. based on professional knowledge and experience in production, retention xe, x Zhuo mx: x. has overheat so it hit in addition to the deduction of the remaining variables l1 each furnace after the first piece of billet rate of 360 samples for ODPS mapping, and mapping features based on the extraction for the DDL, the top 5 were the most important factors are: home, startling., Og,[link widoczny dla zalogowanych], ink,[link widoczny dla zalogowanych], children. While on the main factors for the recovery mode, get the following optimization decision: XlI C 9.18 ~ 0.19X2l silicon 0.1l ~ 0.15% Xlot heat within the arc of 928 ~ 1277J/ms · Kxl = 'overheat 5 ~ l5 ℃ xII maximum casting speed of 9.8 ~ 1.9m/rainXII | Mn,[link widoczny dla zalogowanych], S, instances of more than t60 ~ 704.2 = st14ZF ~. ~ deep drawing steel production in early 1991 after the property failed in serious condition. the use of pattern recognition method to analyze the reasons to improve the rate of qualified products. FLS from the cold to get 902 complete and valid samples to a cold rolled to a sample. St14ZF steel performance of feature selection in Table 3. Shanghai No. l6 capsule box spring steel capsule 3St14ZF the amount of special-cylinder variable selection process parameter space variable process parameters London Education l C 8 I Si annealed at mouth out with Cliff Yun almost the entire rate of l0 l of manganese. Zhang ll hideous rolling reduction rate of stroke identified li la coiling aluminum rolling temperature Yun Cliff B T l the thickness of st14ZF level of nitrogen performance indicators of deep drawing steel yield strength, tensile strength, elongation, hardness,[link widoczny dla zalogowanych], ZF-level cupping value. substandard performance is mainly affected elongation and Erichsen value, take the two indicators of target variables,[link widoczny dla zalogowanych], the classification accordingly standards in Table 4. Table 4St14ZF performance criteria for the classification of steel projects l boat class extends the standard 1 minute snapped 。。。。。。-'。-___'~ Cho Il ≯ 38l1'YlYl 1; '1 '2 lI <1:2 - Table 4 the relative value = actual cup cupping sudden / standards cupping 4.2.1 Results and Analysis of the value of (1) level caused by deep-drawing steel St14ZF downgrade the main indicator is the punch, followed by elongation. including 1.0mm thickness product index as the most serious cupping , the highest rate of degradation. (2) by chemical recognition analysis indicated that the main factors Cupping steel P, N, Al exceeded. control of P, N, Al in the current standards, the level of restriction can dump the cup in the more low. elongation of the main factors is. flat rate, Mn, P, cold reduction, the final rolling temperature. raise flat rate on elongation useful. the higher the amount of cold rolling on elongation index disadvantage. finish rolling temperature is below the standard range, the failure rate of elongation increased exponentially. (3) When Pd0.005, Cupping and elongation of the failure rate is increasing. 4.2.2 measures and proposals (1) In order to ensure N <O.0065%, non-continuous casting open casting big bag, recycled steel not melting the steel. In order to reduce nitrogen, suggested that the steel converter plus Al, CAS CAS plus fine-tuning to add A1, fine-tuning. (2) cancel the special mining, P ≤ 0.018%. (3) the MnO.22% ~ 0.30 to 0.20% ~ O.28, to retain special mining. (4) the flat rate to 1.O ~ 1.2%. (5) converter to blowing converter, the carbon content from 0.02% ~ O.045 to 0.015 ~ O.04% 4.2.3 production practices on the basis of the analysis, Strict enforcement of existing standards, to strengthen management. the past six months (1992 2 July) St] 4ZF failure rate the performance of the 2 below. In order to present the results of a round, fluttering of flag above measures will be implemented step by step 5.. Results Cambodia language of mathematical statistics as a regular supplement to the production of chemical pattern recognition processing data, analysis and optimization for decision-making properly, can help improve product quality, optimize production processes, with significant technical and economic benefits. Thus a bright future.

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