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C25 series of high-pressure casting machine design and analysis of hydraulic cylinder


Machining, and effectively ensure the processing quality., 2) the piston rod in the work of the high temperature water vapor, smoke,[link widoczny dla zalogowanych], dust effects,[link widoczny dla zalogowanych], the piston rod to prevent rust and produce scars. Decadent for hard chrome plating. 54 Machinery Development I998 No. 4 Bottom 31 earrings and forging the overall structure and improve the strength, to ensure the security and reliability. (2) hydraulic cylinder seal cylinder seal design the most important is to prevent internal leakage of the piston seals and rod seals for external leakage . But also to ensure good operation and long life. The performance of V-seal is the most reliable. Durability is superior. Seal selection 西德洪格尔 DMD9 type, made of NBR-FABRIC-POM. Meets the requirements of the media . But also has excellent sealing performance. (3) piston and piston rod guide design of piston and rod guide sleeve for high wear resistance. Can not strain the surface of cylinder and piston rod in order to improve performance and service life of hydraulic cylinder. Directed by Hong Geer FA-type piston guide rings. Materials for the PoM-PTFE-BRONZE-COMPOUND. Oriented type of rod guide rings with FI. Dust ring with FAI type. (4) the design of hydraulic cylinder cushion device set on the German Rexroth hydraulic cylinder on the same structure in the form of the buffer valve. Caused by the inertial force to absorb the mechanical energy. Buffering effect is remarkable. To ensure good hydraulic cylinder cushioning. (5) to set the exhaust of cylinder pressure measurement exhaust fitting. Can rule out the hydraulic cylinder in the air, it can easily measure the pressure of the hydraulic cylinder in the two chambers. (6) hydraulic cylinder end cap screw cover screw hydraulic cylinder design and calculation of high-strength bolts used l0 .9,[link widoczny dla zalogowanych], in the design process for its preparation of the force and intensity of use of computer software was calibrated and high pressure, and Rexroth series hydraulic cylinders were compared. Calculated as follows: (see Table 2) Table 2 screws check the hydraulic cylinder strength of Mao in 1998 Table 4 55 for each cover screw machine development work load: Q = Q + Q, = rJ + A) Q screws Strength Check the formula: ÷ ≤ India Ji d {/ 4 tightening torque: T. = O . O2Q port d, (N ・ m) where: Am residual preload force coefficient; p - Working pressure (Pa); D - Hydraulic cylinder piston diameter (m) dm piston rod diameter (m); Q. - Screw the workload ( N); BU screw number; Q. - Residual preload (N): d, - screw diameter (m); Q a screw tightening force (N); Sp - to ensure that the stress (Pa); Tm tightening torque (N ・ m). 5 major domestic economic and social benefits of slab continuous casting machine with the host high pressure hydraulic cylinders are introduced, such as Baosteel l900 pull caster, Wuhan Iron and Steel slab caster l600,[link widoczny dla zalogowanych], l500 slab continuous casting machine and Angang Tianjin Steel , TISCO continuous casting machines. After the introduction of the spare parts of hydraulic cylinder countries spend a lot of foreign exchange each year from abroad. Continuous casting machine made the successful development of high-pressure hydraulic cylinder, the introduction of continuous casting machine spare parts manufacturing high pressure hydraulic cylinders foundation. High-pressure casting machine hydraulic cylinder is one of the key basic parts. Its successful development to address the large-scale pull caster localization of a technical key. Panzhihua Iron and Steel l350 slab caster using domestic cylinder will be no spare parts to worry about. This can only save foreign exchange of about 2oo ~ 300 million US dollars. High-pressure hydraulic cylinder seal after seal is still boast the industry research topics. Panzhihua Iron and Steel l350 slab caster is still the introduction of high pressure hydraulic cylinder seals 西德洪格尔 and guide ring, efforts to resolve the seal, guide ring of the domestic issues is a priority. 6 Conclusion Panzhihua Iron and Steel 1350 slab continuous casting machine is designed and complete sets of large- scale slab continuous casting machine,[link widoczny dla zalogowanych], hydraulic factory in Shaoguan research and design development of the continuous casting machine C25 series of high pressure hydraulic cylinders fully meet the Panzhihua Iron and Steel Continuous Casting Machine requirements, through the test. The results show that. Design and manufacture of hydraulic cylinders to the J ~] JQ20301-88jBtJQ20302-88 standards for Grade A performance. Received date :1998-09-1034 ■ (on the next page 46) 4 Conclusion (1) the device on the loader hydraulic system for effective monitoring of working conditions can help to improve treatment capacity loader hydraulic failure, improve maintenance efficiency. (2) to more sophisticated hydraulic engineering design of mechanical fault detection device basis. (3) The installation of more sensors, the development costs too high. References 1 Winter students pay attention. Hydraulic sensing technology in the works of local maple and evaluation methods. Engineering machine maple and maintenance. 1995; 22 Hirata beam of a Hitachi hydraulic risk: 【bry when scanning force / - port of. Construction machine maple. 1992 ; 1 Received Date :1998-09-10
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