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CNC Machining and surface finish of Magnesium Alloy Rigid Front Fork for Bicycle

Magnesium alloys are well-known for being the lightest structural alloys [1].

They are made of magnesium, the lightest structural metal, mixed with other metal elements to improve the physical properties. These elements include manganese, aluminium, zinc, silicon, copper, zirconium, and rare-earth metals [2].

Some of magnesium’s favourable properties include low specific gravity and a high strength-to-weight ratio. As a result, the material lends itself to a range of automotive, aerospace, industrial, electronic, biomedical, and commercial applications

Properties and advantages Applications

Magnesium alloys cover a wide array of applications, from automotive and aerospace applications to electronic and biomedical uses.

Structural applications Automotive, aerospace, industrial, and commercial applications are examples of structural applications. The advantage of magnesium alloys to be used in such applications is their light weight, high strength-to-weight ratio, high stiffness-to-weight ratio, castability, machinability, and great damping [4].

Automotive: support brackets for brakes and clutch, housing for transmission

Aerospace: landing wheels, helicopter rotor fittings, gearbox housings

Industrial: high-speed operating machinery, such as textile machines

Commercial: luggage, hand tools, computer housings, ladders

Electronic applications Electronic applications include electronic packaging, hard drive arms, cell phone and portable media device housings. Magnesium alloys are being used instead of plastics due to their light weight, strength and durability. They also are relatively better for heat dissipation and protection against electromagnetic and radio frequency interference [5].

Medical applications Portable medical equipment and wheelchairs that require light material make good use of magnesium alloys. Also, cardiovascular stents and orthopaedic devices are potential applications of some magnesium alloys due to magnesium’s biocompatibility and bioabsorbability [4].

CNC Machining and surface finish of Magnesium Alloy Rigid Front Fork for Bicycle

What is a bicycle fork? A bicycle fork is the part of the bicycle on which the front wheel is mounted and turned by the handlebars to steer the bicycle. It consists of a steerer tube, crown and fork legs, and a drop for receiving the axle. Magnesium can be used to design bicycle frames that are lighter than aluminum while maintaining high tensile strength and damping capacity. All of this results in a smoother, more efficient ride. Magnesium is also less expensive than popular lightweight materials like carbon fiber.

Magnesium is increasingly chosen by design engineers as the lightweight metal option that retains rigidity and strength needed for structural applications. Magnesium alloy extrusions offer the structural strength benefits of their aluminum counterparts at a 25 to 30 percent weight savings. Lowering weight directly impacts transportation and energy costs, manpower needed for assembly and use, and load requirements for structure supports. Extruded magnesium alloys offer high mechanical strength and performance while being the easiest structural metal to machine, giving manufacturers better ways to design innovative products for highly competitive markets.

CNC Machining and surface finish of Magnesium Alloy Rigid Front Fork for Bicycle Products

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