 Wysłany: Czw 18:24, 30 Gru 2010 Temat postu: air jordan shoes cheap Ion Implanted high wear res |
|
| Ion Implanted high wear resistance of tungsten carbide die
Improvement purposes. (2) numerous ion bombardment and implantation,air jordan shoes cheap, the injection of dislocations within the diffusion layer rearrange to form many small angle grain boundaries, subgrain boundaries, to note within the diffusion layer matrix grain was refined. WC layer while Implanted foreign ions through the electronic exchange, some with crystal exists, and some one in the crystal lattice there, causing many of lattice distortion 0 Margaret Tuo Liao dark particles and decorated. ?} Vend. i lobe; |: poison Li Peng sprouts I__ \No. 28 of 11 total dispersion strengthening of 57 played a role in the Implanted Layer strength has been greatly improved. 2Cr13 we have done before and after the tensile strength of steel Implanted test, using standard cylindrical tensile test specimens, resulting in Ion Implanted 2Cr13 after tensile strength than the 2Cr13 not Implanted samples increased by 50% or more . The same sample at 800 ~ C temperature tensile test,ed hardy clothing, note the sample infiltration 2Cr13 after the infiltration of 2Cr13 than the sample without the injection temperature higher than 1 times the tensile strength. Note infiltration layer that WC particles enhance the strength obtained when the wear ability to support greatly increased, no doubt increases the wear resistance. Beetle> Z trip to a steel base map lWC low gradient times the wear-resistant materials microstructure (xl00) OO. 1O. 2O. 30.40.50.60.70.80.911.1 Note infiltration depth (nln1) Figure 2WC Implanted hardness distribution (3) Most of the known metal fatigue cracks from the surface. The surface of the mold Ion Implanted ions continuously bombard the numerous plastic deformation has occurred, with the resulting stress can inhibit crack initiation; the same time, the original variety of easy to crack initiation dislocations and other crystal defects in ion implantation, due to the role of foreign atom pinning blocked the slip surface,ugg stivali, but also not easy to crack initiation; see from Figure 1, note fine crystal diffusion layer,ugg milano, while the steel substrate in vivo and the original coarse grains, even if the note had a crack diffusion layer, the internal coarse crystal structure can slow down crack propagation. This means that the Ion Implanted WC at the same time improve the fatigue strength of steel substrate. The improvement of fatigue strength and the WC particles due to the risk of cracking and caving greatly reduced. The original technology, the hot upsetting die, alternating in the high stress loads and thermal shock under the influence of crack and crack is often the case. The Implanted WC upsetting die thermal cracking and caving does not produce the facts also indirectly confirmed the feasibility of the above analysis. (4) In summary, WC Note the high wear resistance of nitrided layer 3 reasons: the large number of highly dispersed particles of fine dxWC their high wear resistance; steel substrate on the strong support of WC particles; with the matrix enhanced resistance to fatigue, so wear layers WC, difficult to crack and crumble. Combined result of the three macro shown is a high wear resistance. As Ion Implanted WC mold is a new mold, why has such a high wear resistance, remains to be further from the theoretical to system. 6 Conclusion (1) After the actual use of the test proved that high-energy Ion Implanted WC mold can be used in many harsh conditions, and life than hot die steel (5Cr4Mo3SiMnVA1) and cold-working die steel (Crl2), also able to low-alloy steel (40Cr) to replace half of high speed steel (3Cr2W8V) manufacturing of aluminum die-casting model of long life batteries. (2) High Energy Ion Implanted WC mold production technology long life with its advanced nature, and the resulting unique structure closely related. Ion Implanted WC mold not only has good mechanical properties, and in particular the surface of wear-resistant WC \. (3) Based on the success of the pilot, in the plastic, refractory materials, magnetic materials, powder metallurgy, and application of drug molds are also very pleased with the results obtained. Therefore, the high-energy Ion Implanted WC mold was a lot of customers. Improve the precision of ultrasonic vibration cutting of the Fuji Industrial Corporation El El launch FUM-1 ultrasonic vibration cutting device, imposed by torsional vibration of the spindle,ugg prezzo, can improve the surface roughness and improve precision. The device is the use of ultrasound to produce 270o0Hz tiny spindle vibration, tool tip to increase the frequency of contact with the workpiece, to obtain the sword to get high-speed, high-quality walking surfaces. In addition, as reducing the cutting resistance, which can reduce the use of coolant, and difficult to cut materials for processing. The device can be used for drilling, milling and turning, can be installed on existing machines. Reflect the marketable good, so now officially on the market. Kapahuji Lake Jiashanhupa. 相关的主题文章： ugg prezzo Tungsten carbide seal ring surface burn air jordan shoes cheap SCP-1.080.6 Scroll Pump Development _3891 air jordan shoes cheap Cellulose packaging films - |
|
