Titanium metal itself has poor plastic deformation. Over the years, the application market for titanium standard parts has been slowly developing from small to large quantities, resulting in slower development and updating of manufacturing equipment and products. Therefore, when titanium fasteners first entered the market, It is manufactured by mechanical processing.
Titanium’s properties, which are a combination of high strength, stiffness, toughness, low density, and good corrosion resistance provided by various titanium alloys at very low to elevated temperatures, allow weight savings in aerospace structures and other high-performance applications. Titanium is a low-density element (approximately 60% of the density of iron) that can be strengthened by alloying and deformation processing. Titanium is nonmagnetic and has good heat-transfer properties. Its coefficient of thermal expansion in machining products is the use of machining turning, milling, lathe picking, and other processing methods to process the bar into the finished product. The raw material waste is large, the yield rate is low, the process is large, the error is large, and the yield rate is low, resulting in high costs. Affect the application and popularization of titanium fastener products.
HOT FORGING PROCESS
The following table lists Hot forging refer to the processing method in which the material is heated and subjected to pressure deformation so that the shape of the material meets the requirements of the drawing standard. The specific operation is to heat the material to a certain temperature and put it into a mold of a certain shape for forging and forming. It is also called hot upsetting or Red beat processing, hot forging is mainly used to produce larger batches of bolts, nuts, and some non-standard-shaped parts, which improves processing efficiency, ensures product consistency, improves product yield, and reduces material and processing costs.
COLD HEADING PROCESS
Most ComCold heading is a method of using the plasticity of metal materials to apply pressure or cold drawing using a cold heading machine to achieve the solid deformation of the metal and to forge the top of the wire and the rod into a shape at room temperature.
Cold heading is mainly used to manufacture bolts, nuts, screws, rivets, and other parts. The raw materials can be titanium and titanium alloys or other non-ferrous and ferrous metal materials. Cold heading can make the utilization rate of raw materials reach more than 90% or even higher.
Cold heading is mostly carried out on a dedicated cold heading machine, which facilitates continuous, multi-station, and automated production. Cutting, heating, forming, chamfering, diameter reduction, and trimming can be completed in sequence on the cold heading machine. The production efficiency is high. At present, only pure titanium materials can be used, and the working speed can reach 50~150 pieces per minute, every 8 hours It can produce 30,000 to 70,000 pieces per hour, with extremely high efficiency, reducing processing costs, lowering prices, and earlier delivery.
Hot forging offers many advantages to the overall quality of titanium bolts.
Unliking the simple machining of the fastener heads, the hot forging process makes the grain structure of the material more uniform and compact, which strengthens the tension, shear, and fatigue resistance of the finished parts.
Titanium Grade 5 is the strongest titanium alloy with good corrosion resistance and the ability to be welded. Titanium may be selected over other materials such as steel due to its ability to withstand high and subzero temperatures. Common use cases include aerospace fasteners, turbine blades, engine components, sports equipment, and marine applications.
When CNC machining titanium, low cutting speeds are recommended. Tooltip temperatures can be easily increased by higher cutting speeds, which can compromise tools. Other related factors include sharp tools regularly replaced at the first sign of wear, feed rates high enough to prevent work hardening, and the generous use of coolant.