In this paper, the optimization technology of lubricating and flushing system for roll gap of 2 250 mm hot finishing mill of Baotou steel is introduced. The temperature of flushing system is controllable after optimization and the system can be without affecting by external steam fluctuation so that the effect of rolling lubrication is greatly improved and rolling force is reduced, which provide guarantee for smooth production on site.

In order to realize the print of two-dimensional code tag for steel products, the two-dimensional code tag print system is designed and developed. It is with the B/S configuration pattern based on the existing ERP platform development. The front-end development is with JSP technology and the back end is with Java and XML to control business logic. After the system processes the data collected by ERP, the results based on parameter determination are stored into two-dimensional code, then the two-dimensional code document of steel products based on the tag templates is output and printed out.

In this article, it is introduced the power supply device of medium frequency induction melting furnace is improved aiming at the faults and deficiencies in the operation of common parallel resonant power supply of 25 kg intermediate frequency induction furnace in a laboratory. The results showed that the load current of parallel inverters changed from rectangular wave to approximate sine wave and the adjustment range of trigger signal became wider after improvement so that constant power output could be achieved. As a result, such shortcomings of common parallel inverters as small capacity and output without full power are overcome.

The influences of reclaimed water on circulating cooling water system in the recycling process are studied through single factor corrosion test and corrosion inhibition test of reclaimed water in iron and steel enterprises. The results showed that the corrosion of Cl^- and in water to the system was serious during the operation of circulating cooling water system. The actual operation status of circulating cooling water system can be effectively improved, service life of system equipment can be improved and operation costs can be reduced by selecting corrosion inhibitor and reasonably master its dosage, which is of guiding significance for regeneration and reuse of industrial wastewater in iron and steel enterprises.

Under the premise of not changing the original industrial pattern of plant, adjust measures to local conditions to cultivate different levels of ecological garden landscape by investigating and analyzing the landscaping system of Baotou Steel. Moreover, three-dimensional green quantity of plant is increased by strengthening three-dimensional afforesting, especially such measures as the vertical greening, sky courts, parking lot greening and slope protection and revegetation. Meanwhile, such ecological re-cultivations as the afforestation of northern raw material region, surrounding of tailings lake and mine can be popularized energetically to supply a deficiency, reasonably allocate the garden environment landscape and effectively improve the ecological green quantity in park of Baotou Steel.

The experiments for surface roughness of sheet metal with the DIN EN 10049 and GB/T2523 two test methods are compared, verified and explored according to the domestic and international production testing conditions of automobile leaf-spring. It is found that the stability and accuracy of gaussian filter are better than those of 2RC filter, stability of test data for sheet metal with different surface roughness ranges has no connection with the number of testing points as well as the surface roughness has no connection with plane grain trend through comparing the requirements of filter for testing surface roughness, number of test points for samples and test direction, which provide guidance for production testing with different standards.

After the sample was completely dissolved by dilute nitric acid, the method for determining contents of impurity elements (Al, Fe and Sb) in zinc flakes with inductively coupled plasma optical emission spectrometer (ICP-OES) was established by selecting Al 167.079 nm, Fe 238.204 nm and Sb 206.833 nm as the analytical line. The results showed that the detection ranges of Al, Fe and Sb were 0.50~5.0 μg/mL, 0.05~0.50 μg/mL and 0.05~0.50 μg/mL respectively. The linear correlation coefficients of calibration curve were all over 0.999 and the detection limit of method was 0.018~0.100 μg/g. The production samples of zinc flakes were determined according to the experimental method, the relative standard deviations (RSD, n = 10) were all smaller than 5.0% and adding standard recovery was 98%~102%.

Innovation is the primary driving force for development, so grasp innovation is development and seeks innovation is the future. The present situation of scientific and technological innovation of Baotou Steel is with not only advantages of resources and equipment, but also such problems as insufficient innovation motivation. Based on the investigation results for scientific and technological innovation of Baotou Steel, the following conclusions are obtained by analyzing and thinking. At present, Baotou Steel should strengthen the researches for perfecting scientific research management system, strengthening construction of incentive policies, reinforcing R&D, strengthening construction of scientific research bases, making scientific research plans and formulating innovative strategies. Baotou Steel should pay high attention to the strategic importance and functions of scientific and technological innovation as well as make it become the primary driving force for development of company to accelerate the construction of innovative Baotou Steel.

The filter material prepared by steel slag powder, blast furnace slag and coal ash is with the adsorption capacity as well as the coking wastewater can be treated with it. The test results showed that its absorption efficiency on COD and chroma was higher than that of ordinary steel slag particles, while lower than that of activated carbon. The test results proved that the absorption efficiency of solid wastes can be improved by preparing filter material with them after treatment.

The prediction of coke quality is very important, but the errors are larger. In this paper, the factors affecting predictive effects of coke quality are discussed, the process variables are introduced into prediction model and the big data method is used to study. Moreover, the reasons of errors are analyzed and the improvement suggestions are put forward.