Single-phase nanocrystalline ε-Fe3N magnetic thin films were obtained by DC magnetron sputtering at 10% nitrogen partial pressure. The thin films were annealed in vacuum at 500, 600, 700 and 800℃, respectively. X-ray diffraction (XRD) and vibrating sample magnetometer (VSM) were used to charac......
Read More1. Principle, development and advantages of QPQ salt bath nitriding technology 1.1 Chemical principle of QPQ salt bath nitriding technology QPQ technology belongs to the category of chemical heat treatment, is the use of atoms at high temperature is easier to diffuse, more adsorbed on the surf......
Read More1. Experimental materials QPQ salt bath nitriding process used experimental materials include 42CrMo steel material, salt nitride, salt oxide, salt adjustment, sandpaper (500#, 2000#) and metallographic polishing flannelette. 1.1 Experimental medium material Experimental media for salt bath ni......
Read MoreIn order to improve the wear resistance of 05Cr17Ni4Cu4Nb material, extend its service life, and expand its application range, the surface of 05Cr17Ni4Cu4Nb stainless steel material is strengthened by QPQ heat treatment process. The effects of different nitriding time and concentration of cyan......
Read MoreMesh Belt Continuous Heat Treatment Furnace Production Line For Bolts, Nuts, Nail , Stud Fastener Products 1. Technical requirements: Heat treatment products: bolts, nuts, nail ,stud fastener products, processing material: 35CrMoA.42CrMoA. 20MnTiB, etc. Main parameters: the maximum temperature......
Read MoreThermocouple: is the most widely used contact temperature sensor, which consists of two uniform metal wires of different compositions. One end of them is welded together, which is called the measuring end (hot end); the other end is connected to the electric furnace of the measuring instrument......
Read More1. Characteristics of refractory fibers Refractory fiber, also known as ceramic fiber, can be processed into products in the shape of blanket, felt, thread, cotton, rope, belt, board, etc. Refractory fibers have the following characteristics: (1) High temperature resistance: The long-term use ......
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