Bike Racks Combined With Technology
The frame material from the earliest chrome molybdenum steel, Bike Racks evolved to aluminum alloy, and then the use of composite materials such as carbon fiber, Bike Racks there are other scandium alloy, magnesium alloy, titanium alloy, the industry continue to develop new material formula to enhance the pipe and structural design capabilities And innovative processing technology, just to make the frame lighter, Bike Racks stronger, more comfortable and more streamlined and beautiful. Density is one of the key factors determining the weight of the frame, the lower the density, the lighter the frame can be made, the density of the chrome molybdenum steel is 7.9, the aluminum alloy is 2.6-2.9, the titanium 4.5, the titanium alloy 4.3-5.1, Material 1.6, magnesium alloy 1.7, which can be seen chrome molybdenum steel the highest density, the lowest carbon fiber composite. However, Bike Racks in addition to the weight of the frame, but also consider the tensile strength, elasticity coefficient, so although the density is low, but the intensity is not enough not.
In general, the rigidity of the frame is determined by the elastic modulus of the material, the elastic modulus of the steel is 30, the aluminum is 10-11 and the titanium 15-16.5. Therefore, when the diameter and wall thickness are the same, the rigidity of the aluminum frame is only steel frame One-third of the rigidity of the titanium frame is only one-half the steel frame. Frame strength is determined by the strength of the material, Bike Racks the strength of the reduction and the quality of the frame pipe, heat treatment process and alloy composition has a great relationship. Aluminum precipitation point only 11-59, titanium 40-120, steel 46-162, compared to aluminum is more fragile and vulnerable. In the actual design, each frame of the pipe diameter will determine the size of the frame stiffness, Bike Racks strength and weight, pipe wall thickness will also affect the frame strength and weight. Some of the most suitable design of the frame in some places emphasize rigid, in some places to strength, in some places to shock, it must be in different functional demands of the site with the appropriate material, and the combination of different materials technology is also a major test.
Steel is the longest used in the bike frame material, Bike Racks the main advantages include long ride ride rigidity, pipe elasticity (shock), pipe joints and more processing and easy to weld and do not need heat treatment, so the cost and The price is relatively low. The disadvantage is the weight is too heavy, improper maintenance easy to rust, pipe shape is not easy and metal fatigue problems. However, many of today's alloy steel has been in the rigid, elastic coefficient, transmission, stability, get a good effect, Bike Racks the only fly in the oder is still heavier weight. Steel molybdenum steel in the most common,Bike Racks high strength and easy to pump processing. Molybdenum can improve the strength of steel to prevent brittle; chromium can make steel corrosion, rust and prevent high temperature oxidation. Many handmade steel tube carcassers most recommend is its excellent sense of road and suitable for long-distance riding the comfort of the advantages, as the steel gourd said: "steel forever, a perpetuating!" Suitable for use in BMX Car, long distance wagon and truck.
Aluminum alloy is currently the most common use of the material on the market, Bike Racks the advantage is light weight, short time hardness and rigidity of the best performance, easy to shape, not rust, light to the tube can be very thin, The use of CNC die cutting to make exaggerated appearance and amazing strength.