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 Wysłany: Śro 12:04, 19 Sty 2011 Temat postu: moncler günstig Gas atomized superalloy milling t |
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Gas atomized superalloy milling techniques of experimental research
The design and manufacture the line in Figure 2 shows the resistance furnace of the rise, the typical cooling curve. The figure shows that in about 1h, the furnace temperature up to l550c, followed by the insulation. Then stop heating, cooling curves corresponding heating power are plotted in the lower part of the map can be obtained using the power 5.5KVA l500C above the heat source, indicating that the furnace is more economical and practical. The rate of temperature rise by the insulating material and crucible material constraints. Figure 3 shows the edge of the furnace temperature measurement results, the school, such as measuring points as shown in the right side of the diagram. Crucible in the clam near the upper wall using a tungsten rhenium thermocouple in the bottom center of the crucible using a standard platinum-rhodium thermocouple placed at the bottom of the crucible samples. For example, the copper melting point of 1080C shows the Gang in the early stages of heating, the furnace temperature, there is a difference. After a period of time to be heated. Temperature becomes uniform. For example, when heated to l080C when the power until the furnace cooling,[link widoczny dla zalogowanych], remove the samples of copper. Melted samples show that measurements are accurate. This will control the temperature of the. 2. Powder products: Jing trial with the device has been out of tin, Cml1, Figure 2 liters of resistance furnace, cooling curve of Figure 3 a typical school test furnace temperature curve of copper, iron,[link widoczny dla zalogowanych], diamonds and nickel,[link widoczny dla zalogowanych], elemental powder products, but also trial a stainless steel and rare earth alloy powder products. Figure 4 SEM photographs of powder, which looks for the ball with smooth surface. This is due to the atomization process, no oxidation atmosphere, the metal droplet surface tension enough to overcome the aerodynamic forces of the deformation, the droplet will shrink during the curing into a ball before. Figure 5 shows the size distribution of alloy powder IaNi - the average size of 41.35, urn, powder of specific surface area of 0.0419m. / G. Table l shows the original atomized NdFeB magnetic powder 300 times magnification 3000 times magnification a) copper 3000 times magnification 2000 times magnification b) Figure 4 Copper tin powder, tin powder, scanning electron. Micrograph of Table l atomized NdFeB magnetic powder sample code components or (emu / g) tHe (Oe) lSR. 0701942ANdFeB53.7567720.5712060994 - 3OHNdDyFeCoAIB49.317067J0.6250 energy. External magnetic field strength measurements 280000e. O in the table for the remanent magnetization, S. R. Saturation magnetization for the d and the ratio of d, iHe for the intrinsic coercivity. The so-called raw powder, the atomized powder by sieving and untreated powder. After screening and heat treatment on the magnetic properties of NdFeB powder, see the documents. pure metal, but also for preparation of active metal alloy powder containing 3.. under the protection of inert gas, can produce spherical powder, the particle size of between a few to 209 ~ m adjustable. powders with low oxygen content. 4 . the production of NdFeB magnetic powder is good. The device, if some additional investment into the resistance furnace induction furnace, the effect will be better. 7n] [2] 0IAH ? mj200000I5O �� 000l0O,[link widoczny dla zalogowanych], 0COeO.00c6O.OOO50.00040O00300002O, 000j5OO010.00O80006000S00OO0SOl00l: I:.: ��t: I-: ��:,: I �� �� �� �� I. �� �� a: �� �� I ': ��.: CUUL mouth TIUEGRAPH! Ayumj020OOOO ��5O.0O0 {0O �� 030e0 -OC060.00O5O, OO040-000Oo00200O0l5.OO0j0 �� O00eOO06 �� 0C0S, 000 references () 5000II 3] Qingquan so polylactide axisymmetric jet flow field, the fourth cross country shock tube and shock Conference Proceedings, 1987, Nanjing, P199. C4} Qingquan so, the mechanism of supersonic air atomization milling Research and Analysis,[link widoczny dla zalogowanych], Report, 1993, Huangshan. Qingquan so atomized NdFeB alloy powder and magnetic properties of the organizational structure,
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