large-scale castings are made of resin sand and evaporated molds, with a single piece reaching more than a ton. The materials are all high-quality and fine gray cast iron, with precise proportions and higher tensile and bending strength, making your purchase worry-free. The internationally popular heat treatment process reduces the stress and deformation of castings to a minimum. Long-term use will make it more stable.
, large-scale super-long machining of large castings, milling, planing and boring can be done. For example, a set of * meter gantry milling and planing machine bed (the overall length of the bed reaches meters) is cast in two sections during casting. It can also be divided into two sections during rough machining, but they can be connected together during finishing< As a large-scale casting, bed casting products must undergo heat treatment to improve its performance and improve the inherent quality of the cast iron flat plate. Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing processes, heat treatment generally does not change the shape and overall chemical composition of the workpiece, but changes the microstructure inside the workpiece or changes the chemical composition of the surface of the workpiece. , endow or improve the performance of the workpiece. Its characteristic is to improve the intrinsic quality of the workpiece. < In order to make metal workpieces have the required mechanical properties, physical properties and chemical properties, in addition to the reasonable selection of materials and various forming processes, heat treatment processes are often indispensable. Steel is the most widely used material in the mechanical industry. The microstructure of steel is complex and can be controlled through heat treatment. Therefore, the heat treatment of steel is the main content of metal heat treatment. In addition, aluminum, copper, magnesium, titanium, etc. and their alloys can also change their mechanical, physical and chemical properties through heat treatment to obtain different performance properties.
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