lin91957
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 Posted: Wed 0:14, 01 Dec 2010 Post subject: UGG Boots Electric lifting tool materials and stre |
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Electric lifting tool materials and stress analysis
Development, higher demands lifting tool. Therefore, lifting tools necessary to carry out stress analysis of materials used, to further tap the inherent potential of materials to meet the needs of production and technology development, choose the most economical, safe and reliable lifting tool material, tool design and manufacture of the lifting has a new The play West ■ I 1. The type of lifting tool factory in the survey of 143 sets of lifting tools, based on the lifting tool can be divided into 6 types,[link widoczny dla zalogowanych], shown in Figure 1. The lifting tools for different types of service conditions are different, so different from the stress, and some are pure tension, and some by the shear stress, and some by the bending stress, and some are combined load,[link widoczny dla zalogowanych], under dynamic load in the lifting Shihai. Requires the carrying capacity is generally 0.5 ~ 82t, all the bolts for the connection part of the M16 ~ M90, lifting hole diameter of 35 ~ 400ram, for safe and reliable, must have sufficient strength, good toughness and resistance to notch sensitivity to meet the lifting tools of various types in service conditions. Figure 1 l】 plow lifting tools Iv type seven thousand seven hundred seventy-seven 々 7,777,777,777,777,777 7,777,777,777,777,777,777 power seventy-seven thousand seven hundred seventy-seven o. 5ram, regulate the flow of argon gas. Cited alone increased 5 ~ los aspirated before. As short-arc welding welding, to enhance the protective effect of argon gas, reduce the heat affected zone, to prevent intergranular corrosion and welding deformation. After welding, cutting off power supply, welding seam grab still maintain 3 ~ 5s and stop the gas supply after the removal. 『1 Figure 2 given (to) sub-girth size 1. Given (to) in the tiny set of screen 2. Given (to) in the stainless steel screen panels to 0.3ram 1Grl8Ni9Ti to fall, Table 1 lists the welding parameters. Table 1 suffer electric welding parameters on welding gas flow rate of malaria Ke CLASSIFIED nozzle diameter, mm / A. / LS A / m ・ b a bowl tungsten girth quote 2O ~ 227 ~ 8l0 ~ l2 Tao Lu ÷ 2 straight bowl Tungsten 18 ~ 207 ~ 825 ~ 3O Tao addition, tungsten is an extremely important parameter in the first shape, and arc weld formation and combustion stability are closely related, are shown in Figure 3, the ends of the shape. Also noted that the welding material composition to meet the requirements,[link widoczny dla zalogowanych], material composition does not, will directly lead to welding problems, or even a bad weld. In addition, welding tank sizes to meet the requirements, not uneven thickness, explore different light. Shielding sleeve and screen panels must closely coherent picture, not a gap and so on. Figure 3, the extreme head shapes of tungsten by nitrogen leak weld, x-ray testing and 0.5MPa air pressure test showed that the weld density, in line with quality requirements. 4. Conclusion After several years of practice show that the welding process is feasible, to ensure the quality of welding mask sets,[link widoczny dla zalogowanych], one inspection pass rate increased substantially. Weld corrosion due to the use of leaks, leading to the phenomenon of little motor burned, thus shielding the welding process can meet the quality requirements of the motor. Received :1998-o5-29 ・ 33 ・ Pa engine white
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