Chain guide, also called chain guide, is a static pressure guide used to support and guide the chain, reduce chain friction, reduce noise, and enhance the service life of the chain. High-precision chain guide with high wear resistance, temperature resistance, precision, stability, noiselessness and environmental protection. Chain guide rails and chain guides are involved in product material packaging, canning and conveying machines, food packaging machines, metallurgical equipment, printing machines, book binding machines, die cutting machines, glue nail linkage lines, saddle stitches, and printing machines. A trusted partner in the manufacturing industry . High wear-resistant chain guides, wear-resistant plates, wear-resistant engineering plastics direct sales.
The high molecular weight of the chain guide UHMWPE of Dongguan Lidong Machinery Parts Co., Ltd. gives it excellent performance. It is a thermoplastic engineering plastic with moderate price and excellent performance. It almost concentrates the advantages of various plastics. It has ordinary polyethylene Incomparable with other engineering plastics, it has comprehensive properties such as wear resistance, impact resistance, self-lubricating, corrosion resistance, impact energy absorption, low temperature resistance, not easy to adhere, not easy to absorb water, and low density. In fact, there is no single polymer material with so many excellent properties.
Wear resistance of chain guide UHMWPE
Dongguan Lidong Machinery Parts Co., Ltd. chain guide UHMWPE has the highest abrasion resistance of plastics and exceeds that of some metals. Compared with other materials, UHMWPE has abrasion resistance. Compared with other engineering plastics, the mortar wear index of chain guide UHMW-PE is only 1/5 of PA66, 1/10 of HEPE and PVC; compared with metal, it is 1/7 of carbon steel and 1 of brass. /27. Such high abrasion resistance makes it difficult to test the degree of abrasion resistance by the general plastic abrasion test method, so a mortar abrasion test device is specially designed. The wear resistance of chain guide UHMWPE of Dongguan Lidong Machinery Parts Co., Ltd. is directly proportional to the molecular weight. The higher the molecular weight, the better the wear resistance.
Because the UHMW-PE (chain guide UHMW-PE) has a viscosity of 108 Pa*s in the molten state, its fluidity is extremely poor, and its melt index is almost zero, it is difficult to process with general mechanical processing methods. In recent years, the processing technology of ultra-high molecular weight polyethylene (chain guide UHMW-PE) has been rapidly developed. Through the transformation of ordinary processing equipment, the ultra-high molecular weight polyethylene guide (UHMW-PE) has been compressed from the original -Sintering molding is developed into extrusion, blow molding, injection molding and other special methods of molding.
General processing technology
Pressing and sintering is the most original processing method of UHMW-PE (chain guide UHMW-PE). The production efficiency of this method is quite low, and it is prone to oxidation and degradation. In order to improve production efficiency, direct electric heating can be used ; in addition, Dongguan Lidong Machinery Parts Co., Ltd. has developed an ultra-high-speed fusion processing method , using a blade mixer, the maximum blade rotation The speed can reach 150m/s, so that the material can be raised to the processing temperature in only a few seconds.
Extrusion molding equipment mainly includes plunger extruder, single screw extruder and twin screw extruder. Twin-screw extrusion mostly uses co-rotating twin-screw extruders. In the 1960s, plunger extruders were mostly used. In the mid-1970s, Japan, the United States, and West Germany successively developed single-screw extrusion processes. Japan's Mitsui Petrochemical Company achieved the success of round rod extrusion technology as early as 1974. At the end of 1994, my country developed the Φ45 ultra-high molecular weight polyethylene (chain guide UHMW-PE) special single-screw extruder, and achieved the success of the Φ65 single-screw extrusion pipe industrialized production line in 1997.
Japan's Mitsui Petrochemical Company developed the injection molding process in 1974, commercialized it in 1976, and then developed the reciprocating screw injection molding technology. In 1985, the American Hoechst Company also realized the screw injection molding process of ultra-high molecular weight polyethylene (UHMW-PE). In 1983, my country modified the domestic XS-ZY-125A injection machine, and successfully injected UHMW-PE (chain guide UHMW-PE) supporting rollers and water pump shaft sleeves for beer can production lines. Successfully injected medical artificial joints and so on.
When the UHMW-PE chain guide is processed, when the material is extruded from the die, it shrinks to a certain extent due to the elastic recovery, and there is almost no sag phenomenon, so it is a hollow container, especially large Blow molding of containers, such as fuel tanks and vats, creates favorable conditions. Ultra-high molecular weight polyethylene (chain guide UHMW-PE) blow molding can also lead to a high-performance film with balanced vertical and horizontal strength, thereby solving the long-standing problem of inconsistent strength in the vertical and horizontal directions of HDPE film, which is likely to cause longitudinal damage.
Mechanical industry: used for instrument covers, some parts and electrical parts, etc. Medical equipment: The three types of implants can be used as artificial joint implants for the interface of friction pairs, such as tibial spacers, acetabular linings, and so on. Mining industry: manufacturing artificial tank linings, gates, chain plates, vibrating screens, conveyor plates, and mine truck linings. General machinery industry: manufacturing various shaft sleeves, gears, bushes, sliding plates, impellers, etc. Vehicle manufacturing and transportation industry: The main products include dump trucks, dumper liners, impact-resistant parts for train vehicles, etc. Paper industry: Mainly produce vacuum suction box panels and wipers, compacting parts, joints, motorized sealing shafts, blade guide wheels, scrapers, filters, etc. Textile industry: manufacturing all kinds of leather knots, fiber rolls, shuttle rods, gears, and joints. Sweeping rods, buffer blocks, rod sleeves, swing back beams and other shock-resistant and wear-resistant parts. Catering light industry: manufacturing panels, cutting boards, work panels, cams, gears, etc. Ceramic industry: manufacturing various specifications of rolling heads, filter plates, wheels, etc. Sports industry: ski lining, tracked ice and snow automobile parts, glider block floor, steel ball device parts, various bearing bushings, rolling fairways, snowmobile parts, etc.