The automobile industry is the main service object of the casting industry. From a technical point of view, the casting process can provide almost any form, structure and size of vehicle parts, some of which are classic vehicle parts (such as engines) that other methods cannot provide. Based on...
The gear fault prediction model based on deep learning is designed by taking the gear of shearer cutting section as the research object and using the convolution neural network method, and the fault prediction and classification recognition ability of D-CNN model is verified by experimental method. The research process...
There are many kinds of shearer faults, but there are mainly three kinds of faults, namely mechanical system fault, hydraulic system fault and electrical system fault. Common fault types of the cutting part are shown in the table. S/N Fault classification Origin 1 Abnormal noise of operating clutch The...
MG1000/2500 WD shearer is selected as the research object. The shearer is composed of a cutting part, a traction part, a middle body, a crushing mechanism, a hydraulic system and a cooling system. Its structure diagram is shown in the figure. As the traveling mechanism of the shearer, the...
When CAD and CAE technology are used to assist the design of gating and riser system of sand casting coupling parts, the design steps are different from the previous design ideas; The previous design steps are usually to formulate multiple sets of pouring and riser system tooling of sand...
In sand casting, the gating system is a reserved channel in the sand mold, which is used to guide the high-temperature metal melt into the casting cavity and continuously complete the filling of the cavity. The main requirements for the gating system are: (1) Rapid pouring: reduce the temperature...
The sand casting structure of coupling parts is often simpler than that of finished parts, because many structures of finished sand casting coupling parts can not be obtained directly by casting. The actual finished parts often obtain the approximate structure of parts through casting, and finally obtain the structure...
The investment casting method is adopted for precision casting parts. The process is as follows: select appropriate paraffin material to manufacture the investment mold → repeatedly dip refractory sand on the investment mold → harden and dry the shell → melt the internal investment mold to obtain the mold...
The main causes of poor plasma nitriding of precision casting parts are heat treatment temperature, heat treatment time, nitrogen concentration, ammonia concentration, vacuum degree in heat treatment furnace, surface roughness of casting parts, oxidation before quenching and quenching, oxidation before quenching and tempering, oxidation in casting parts and oxidation...
Metallographic structure and scanning electron microscope observation of the alloy select the parts with serious corrosion and take samples along the direction perpendicular to the axis of the test bar. The results of metallographic analysis, scanning electron microscope analysis and micro zone composition energy spectrum analysis of the structure...