The green transportation is the transportation characterized by energy conservation and reduction of exhaust emissions. It is the inevitable trend of future transport development to popularize green and low carbon means of transport as well as weed out and update or remould old vehicles and ships. At present, the internal combustion locomotive is still the main power of railway transportation in plant of Baotou Steel, which is with such disadvantages as high energy consumption and costs and more pollutions so as to be replaced by new energy locomotives in the near future. In the paper, it is briefly introduced the methods for transforming GK₁ type internal combustion locomotive into remote control gas-electric hybrid locomotive, focused on the process of applications in plant of Baotou Steel and analyzed the significances of energy conservation and environment protection, transportation efficiency and cost saving for reformed gas-electric hybrid locomotive through practices of applications.

The 09CrCuSb acid resistant steel (also known as ND steel) is the low alloy structural steel with resistance to sulfuric acid dew point corrosion as well as is applied in such industrial fields as the metallurgy, chemical engineering and petroleum. In this paper, the mass loss and mass loss rate of 09CrCuSbRE and Q235B are compared with the complete immersion of 24 h, 48 h and 72 h at constant temperature of 70 ℃ as well as take the sulfuric acid with concentration of 50% as corrosive medium. The results showed that the change of corrosion resistance rate curve was not obvious and resistance to sulfuric acid corrosion of 09CrCuSbRE was excellent with the extension of corrosion time. With the extension of corrosion time, the corrosion resistance rate curve of Q235B was risen sharply after 48 h, which indicated poor resistance to sulfuric acid corrosion. There are such elements as Cr and Cu on corrosion surface and in corrosion pit of 09CrCuSbRE through observing the corrosion surface with scanning electron microscope(SEM) and energy spectrum analysis. The elements of Cr and Cu in steel are with the effect of passivating steel surface in corrosion resistant environment to prevent the electrochemical reaction between the corrosive medium and matrix of steel. Moreover, the corrosion rate of 09CrCuSbRE is further reduced by adding such elements as Sb and rare earth(RE) in the steel.

According to the use requirements of prefabricated steel structure residence, the 420 MPa grade high-strength weather-resistant anti-seismic special hot-rolled H beam with thick gauge is developed independently with the peritectic steel design of microalloy composition system of low carbon, copper and nickel as well as near-net-shape casting technology of beam blank and universal rolling technology of section steel, which is mainly applied for stand column of frame structure for steel structure residence. The subcracks and intermediate cracks inside flange of ingot blank as well as surface defects of finished product caused by rolled-in scale during rolling process are eliminated through optimizing the continuous casting and rolling processes. All the mechanical properties of finished product could satisfy the requirements of technical agreement as well as the dimension and surface quality could satisfy the requirements of standard GB/T 11263—2017 so that its stable bulk supply is realized.

In order to meet the demands of heavy haul railways as well as make full use of the functions of chromium and niobium in steel, the high carbon rail for heavy haul railway is researched and developed by adding such strengthening elements as chromium and rare earth into high carbon rail steels through smelting the test steel with laboratory furnace and performance study. The performance indexes of rail are that the tensile strength is not less than 1 330 MPa, elongation is not less than 9%, tread hardness of rail head (HBW) is not less than 390 and other properties could meet the requirements of standard BT/T 2344—2012. The results of trial production showed that the production process of the rail was trouble free and performances could meet the technical requirements, which could satisfy the needs of heavy haul railway.

In this paper, it is mainly introduced the influencing factors and control main points of the resistance to hydrogen sulfide stress corrosion for oil casing. In order to meet the usage requirements of high strength oil casing resistant to hydrogen sulfide corrosion, the oil casing resistant to hydrogen sulfide with independent intelligent property rights is manufactured through selecting Cr, Mo, and Ti as the main corrosion resistant alloy elements, strictly controlling contents of S and P as well as reasonably optimizing microalloy elements. Its impact absorbing energy at 0 ℃ reaches over 100 J, so it is with both high strength and toughness as well as they match reasonably so that it is with good resistance to hydrogen sulfide corrosion.

In this paper, the boron in low-alloy steel is determined with ICP-AES and multispectral fitting analysis technology. The analytical spectral lines of elements, interference and correction of coexistence elements as well as detection limits are studied by the condition experiments with instrument. The measuring range is determined to be 0.001%~0.100%. With the method, samples are dissolved with the mixed acid of hydrochloric acid and nitric acid, then they are directly determined with instrument. As a result, a simple and rapid analysis method for determining boron content in low-alloy steel is established, which is with good accuracy and precision.

In this paper, the experimental study on heat treatment process of forging area at heel end of 60-50 kg/m U75V hot rolled compromise rail with different finish cooling temperatures and cooling rates is carried out as well as the tensile properties, hardness of top surface of the rail and cross section, microstructure and decarburized layer of forming section, transition section and heat affected zone of the compromise rail are analyzed. The results showed that the finish cooling temperatures of forming and transition sections of the compromise rail were controlled at about 650 ℃, cooling rate was controlled at 1.3~1.7 ℃/s, finish cooling temperature of heat affected zone was controlled below 550 ℃ and cooling rate was not less than 2 ℃/s, with which the problems of high hardness at forming and transition sections, low hardness at heat affected zone and width out of limits at softened zone of the compromise rail could be effectively solved.

The methods for improving the measuring accuracy of resistance strain type rolling force dynamometer are analyzed from such two aspects as sensor and secondary instrument respectively. The manufacturing accuracy and on-site installation conditions of sensor are the main factors affecting accuracy. The voltage-multiplying of excitation power supply and six-wire bridge circuit are helpful to reduce the errors caused by excitation power supply. The ratio calibration of sensor could solve the problem of measurement errors caused by calibration errors, which is very convenient to apply in the steel rolling field. The modified formulas of calibration ratios are obtained through mathematical derivation considering the problem of cable between the sensor and secondary instrument in the steel rolling field.

In the information economy era, the drawbacks of traditional operation and management models for separation of finance and business have become more prominent. The problem that how to overcome the delayed decision-making and inner control of enterprise caused by lag of corporate financial information due to the “information isolated island” has become the urgent problem for many large enterprises. In the paper, it is described the organic integration of finance and business process is prompted through sorting out business processes so as to effectively improve the management level of large enterprises, ensure that financial data could reflect the whole production management process accurately in real time and achieve the effect of dynamic monitoring of important links in the process in detail. Moreover, the three main processes in enterprise operations, that is the business processes, financial accounting process and management process are with interworking and coordination.

In this paper, it is introduced a design of calculating and recording the deviations of predicted and actual rolling forces for all stands of CSP hot continuous rolling mill by the VBA language environment. The deviations of predicted and actual rolling forces for all stands in a certain range are calculated and with classified statistic based on various rolling parameters in the VBA language environment so that the analysis time is greatly shortened and errors of manual computation are reduced as well as the effects of various rolling parameters and specifications on accuracy of predicted rolling forces could be reflected intuitively. Moreover, the effects of various rolling parameters on accuracy of predicted rolling forces are illustrated through analysis combining with the practical examples, which is with great reference significances for adjusting the corresponding secondary parameters for rolling mill.