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Drop Forging for 6061-T6 Aluminum Parts

We all know that aluminum is the common material used in drop forging process. Drop forging for aluminum alloys can creat good quality parts with good strength while light weight. Forged aluminum parts generally have better properties and surface finish than cast aluminum parts, and are widely adopted in automotive, electricity, motorcycle, etc. Among all the aluminum alloys, 6061-T6 is the most popular material for forging. By rich experience in drop forging, CFS would like to introduce drop forging technique to manufacture 6061-T6 aluminum parts.

Understanding Drop Forging Technique

Drop forging refers to a method of closed die drop forging in which a heated metal billet is placed on a lower die. Under high pressure, the upper die drops down, forcing the metal to fill the contours of the two die blocks. Drop forging gets its name from that action of the ram hammer dropping down on the metal object that is being forged. The reason manufacturers use the drop forging process is to produce products that need to be especially strong and durable.

Type 6061 aluminum is of the 6xxx aluminum alloys, in which magnesium and silicon are the primary alloying elements. The second digit indicates the degree of impurity control for the base aluminum. When this second digit is a “0”, it indicates that the bulk of the alloy is commercial aluminum containing its existing impurity levels, and no special care is needed to tighten controls. The third and fourth digits are simply designators for individual alloys (note that this is not the case with 1xxx aluminum alloys). The nominal composition of type 6061 aluminum is 97.9% Al, 0.6% Si, 1.0%Mg, 0.2%Cr, and 0.28% Cu. The density of 6061 aluminum alloy is 2.7 g/cm3 (0.0975 lb/in3). 6061 aluminum alloy is heat treatable, easily forfged and machined, and is good at resisting corrosion.

6061 Aluminum alloy are generally forged by drop forging manufacturer on hydraulic presses because of their high strain-rate sensitivity. The use of hammers and mechanical presses are the exception rather than the rule. Ram speeds are generally on the slow side, with 1 inch/second or less being typical. Hot dies, including isothermal, are common. In most cases, the tooling temperature is within 250°F of the workpiece temperature. For net-shape/precision forgings, isothermal tooling and low strain rates are the norm.

Type 6061 aluminum is one of the most widely used forged aluminum alloys. Its weld-ability and forgeability make it suitable for many general-purpose applications. Its high strength and corrosion resistance lend type 6061 forged aluminum parts particularly useful in architectural, structural, and motor vehicle applications. 

CFS Forge is the industry expert in drop forging for 6061 aluminum parts. Producing top-quality 6061 aluminum forged parts, CFS' forging capabilities are not limited by size, shape or quantities. With T6 heat treatment, the strength and other properties can be effectively improved. Any inquiry on 6061-T6 forged and machined aluminum parts, pls email to cathy.forge@cnool.net directly!

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