Magnesium alloy is used to replace steel in transportation equipment, and its lightweight is conducive to the realization of carbon emission reduction goals. Therefore, the research of magnesium alloy heavy equipment is of great significance. According to the physical and chemical analysis method, t
Based on the indirect extrusion, an indirect effective friction extrusion method was proposed. The specific control mode and process route are described in detail. This paper introduces the technical characteristics of new process for a horizontal double action indirect effective friction extrusion.
This paper introduced the technical parameters and technological process of a polishing and coating machine new built in an aluminum process company. The machine can carry out the unstacking, polishing, marking, coating, and stacking of aluminum plate by the control means of auto, semi-auto and manu
The composition and micro-structure of 1K101 film of Fe-based amorphous strip were studied by electron probe microscopes(EPMA)and metallographic microscopes, the electrochemical corrosion behavior of Fe-based amorphous strip 1K101 in chloride ion solution with concentration of 2.4 mol/L, ph=2.14, ph
To the problem of low casting speed of bar and wire continuous casting for a domestic steel companies, this paper dynamically set thermal properties with considering heat flow changes of corner area for continuous casting section of 120 t steel production line, and established billet temperature fie
According to the deviationcaused by the billet taper in the ring rolling process of large 6061 aluminum alloy cylinder, the deviation mechanism and the deviation control strategy are studied. Thermal simulation experiments were performed on 6061 aluminum alloy specimens at different temperatures and
Various surface defects often appear on the surface after pickling steel strip, the defects may be caused by pickling process or hot rolling process. For the two kinds of defects of edge rust band and side patch, firstly, the specific producing defects section is analyzed.Then the macro and micro ch
In view of the problem of coil looseness during coiling in acid rolling mill, considering the equipment and process characteristics of acid rolling mill, the comprehensive evaluation function of coil tightness is determined by coil tightness function, interlayer slip and radius uniformity, and then
In order to improve the quality of continuous casting, soft reduction technology is adopted. In order to improve the press-down ability of the leveller, the top roller of the leveller is changed from flat roller design to convex roller. However, when the existing continuous casting machine adopts th
In recent years, there are a lot of bruise defects in the cold rolled coil of 1420 hood production line, which seriously affect the yield of coil and cause great economic losses. In order to improve this kind of defects, this paper introduces four kinds of common contusion defects on the production
With the rapid development of aerospace, petrochemical and military weapons industries in China, the demand for high quality and high accuracy large-diameter thin-walled cylinder is increasing. The counter-roller spinning(CRS)process is a feasible forming method to manufacture these large thin-walle
The step pad set in the lower elevation adjustment device of the hot tandem mill will cause the rolling elevations of the rolling mills to be inconsistent, resulting in difficulty in strip feeding or the hot rolled strip piled up. The wrong position of the step pad led to equipment failure, and the
As an important component of pay-off reel, the stability and service life of spindle is one of the main factors affecting rolling production and product quality. In view of the spindle fracture accident of pay-off reel, a three-dimensional solid finite element analysis model is established. The stre
The new heavy-load equipment is large in volume and heavy in weight, so it is difficult to push and adjust in the confined space according to the traditional way. This paper designs a kind of adjustment device for heavy-load equipment entering the cabin, and carries out the simulation analysis of th
In order to fully verify and analyze the dynamics model of 2(6UPUR+3P)hexapod walking robot and improve the efficiency of modeling and analysis, a computer-aided analysis method based on Matlab program and SimMechanics environment was proposed. First of all, the branched chain of 6-upur legs describ
With the different requirements of fan power, spindle interface and transmission torque, the structure size of wind power locking plate is also changing. Based on the 2.5 MW wind power locking plate for parametric modeling, some key parameters are extracted as the design variables, and the contact r
Based on the working principle of the hydraulic buffer, an AMESim model of a porous buffer was established. During the operation of the bumper piston, the throttle area is changed by gradually covering the throttle hole on the wall of the inner cylinder, so that the speed of the impact object is red
Focusing on the development strategy of state-owned wind power equipment enterprises, using a MW low-wind speed long-blade doubly-fed wind turbine as a prototype, the importance of the main components such as the engine room and the hub of the MW-level wind turbine to the overall unit is introduced.
This paper analyzed the problems existing in the process of science and technology project management. In view of the contradiction between the number of managers and the workload of project management, the workload and quality of project management, the knowledge reserve of managers and the managem