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Refractories Used in Industrial Furnaces For Steel Rolling
1. Refractory Materials For Heating Furnace The heating furnace is a thermal equipment used for heating billets or small steel ingots in a rolling mill or a forging steel plant. It is mainly composed of furnace roof, furnace wall and furnace bottom, as well as air and gas preheating devices, wate...
Quartz Tube Vacuum Heat Treatment Process
1. Principle In the production of photovoltaic infrared detectors, a closed-tube diffusion method is generally used to form a p-n junction. This method is to pack the product and the diffusion source into a quartz tube to a certain degree of vacuum, and then seal it with a hydrogen-oxygen flame. ...
Vacuum Heat Treatment Process of H13 Forging Die Steel
H13 steel is an extremely typical hot work die steel with strong toughness, strong thermal fatigue resistance and strong thermal crack resistance. It is a material with high thermal strength and obvious mold recovery effect after the action of cold and heat. It is suitable for pressing molds, ext...
Application of Vacuum Heat Treatment Technology in High Speed Steel Tools
The application of vacuum heat treatment technology in high-speed steel tools is traditionally believed to encounter problems in two aspects: one is the heat treatment of shank tools with different shank and blade materials; the other is the large and complex tool. For this reason, the vacuum hea...
Heat Treatment of Buick Automatic Transmission Parts on Low Pressure Vacuum Carburizing Furnace
1. Part Description and Existing Problems Due to the material selection and shape design of some parts of Buick 4T65E transmission, it is quite unfavorable for heat treatment deformation control. The most typical is the thin-walled parts such as the main reduction sun gear shaft. The parts are ma...
Vacuum Quenching of Corrugated Ring Spring
The corrugated ring spring of the inlet and outlet valves of small compressors is one of the important parts that directly affects the displacement. The corrugated annular spring sheet (as shown in Figure 1) is stamped and formed from 50CrVA cold-rolled strip steel, and then quenched, with a hard...
Cold Work Die Steel Heat Treatment
There are many factors that cause damage to the cold work mold. The quality of the mold heat treatment process is a key factor to improve the service life of the mold, and sufficient attention must be paid. Inappropriate heat treatment process can easily change the size of the mold; the cold work...
Aging Strengthening Method of Aluminum Alloy
Another strengthening effect of alloying elements on aluminum is realized by heat treatment. However, aluminum has no isomeric transformation, so its heat treatment phase transformation is different from that of steel. The heat treatment strengthening of aluminum alloy is mainly due to the large ...
Brazing of Active Metals
1. Brazing Material Titanium and titanium alloys are rarely brazed with soft solder. The solder used for brazing mainly includes silver base, aluminum base, titanium base or titanium zirconium base. Silver based solder is mainly used for components with working temperature less than 540 ℃. The jo...
Brazing of Copper and Copper Alloys
1. Brazing Materials (1) Several commonly used soft brazing materials are used for copper and brass soft brazing and then strength as shown in Table 1. Solder grade Shear strength/MPa Tensile strength/MPa copper brass copper brass S-Pb80Sn18Sb2 20.6 36.3 88.2 95.1 S-Pb68Sn30Sb2 26.5 27.4...