Before the titanium plate is formed, it must be blanked first. Titanium plate blanking also adopts conventional sawing, milling, shearing and punching methods. Due to the high strength of titanium plate, it is different from aluminum alloy blanking.
1. Saw cutting.
The band saw has high processing efficiency and convenient production preparation, but it is not suitable for processing too thin materials. It is often used to cut titanium plates with a thickness of more than 3 mm. This method does not produce edge cracks, and its disadvantage is that there are burrs, which must be polished after cutting. At present, it is mostly used for trimming, trimming and end cutting.
Band saw cutting can be divided into three categories: friction, semi-friction and ordinary band saws. When the friction band saw is working, due to the high linear speed, severe friction occurs between the saw blade and the workpiece, and the temperature in the cutting area is very high, thus reducing the cutting resistance of the material, improving the workability and high efficiency.
The belt used for sawing titanium should be a rigid structure with sufficient power to maintain a constant speed during sawing; it should be able to automatically feed, tension the band saw and provide sufficient coolant. With the usual high-speed steel band saws you can keep the sharp edge and get consistent results. Blades with a tungsten carbide edge are used to cut particularly thick materials, reducing burr height and depth affected by heat.
2. Milling.
Use a milling cutter to mill a stack of titanium plates to the desired shape, and the milling head moves along the milling template, or it is automatically milled with a large CNC sheet metal milling machine. For stretched edges such as concave curves or flanging, polish before forming to prevent cracks.
3. Cut.
Manufacture of straight profiles of wool or parts that can be cut on gantry shears. If an ordinary shearing machine is used, carefully check whether the equipment can cut the titanium plate. Titanium alloy plates with a thickness of less than 35 mm can already be cut to the required size under production conditions. Thicker sheets can also be sheared if necessary measures are taken to avoid slippage during shearing. To prevent slippage, a higher clamping pressure is required. On the edge of the sheared titanium plate, especially for the thicker titanium plate, the linear deviation is 0.25-0.50 mm, which is usually caused by insufficient rigidity of the cutting edge. Switching to a thicker blade can sometimes overcome this disadvantage. If the material retaining device is modified, and technologies such as digital display and fine adjustment are used, the cutting accuracy can also be improved. The depth of the crack on the edge of the titanium plate does not exceed 0.4 mm, which can be removed by grinding and filing with a grinding wheel. If shearing will cause cracks in critical parts of the part, a cutting method such as a band saw should be considered. When cutting with a gantry shearing machine, the small gap between the single sides of the scissors is 2-3% of the material thickness, the shearing angle is 75-85 degrees, the back angle is 2-3 degrees, and the blade inclination angle on the oblique-blade shears 2 degrees - 5 degrees.
Titanium plates can also be cut with ordinary rolling shearing equipment. The circular shear can cut contour lines with a large radius of curvature (the smaller radius is about 250 mm), and this method is used for titanium plates with a thickness of less than 2.5 mm. The current vibrating shears are only suitable for shearing titanium plates with a thickness of about 2 mm, and the edges of the cut wool must be filed or ground, leaving a filing allowance of more than 0.25 mm. For thin materials (thickness < 0.8 mm), when the quantity is not large, the lever-type manual cutting can also be used or the material can be cut by hand.
4. Punching.
Generally, the wool of the desired shape is punched out on a punching machine at one time. Usually for wool with a simple shape, the maximum blanking thickness is about 3 mm. The titanium plate blanking die should have sufficient rigidity, and use guide posts to keep the upper and lower die in an accurate relative position. When manufacturing various flat parts or various shapes of wool, the smaller size of the punched hole in the titanium plate and the smaller radius of the edge of the punched part should meet the requirements.
In addition, the punching machine can also be used to cut the material. During processing, the crescent-shaped incision is punched out with a small die according to the template and connected, so as to cut out the burr of the part, and then trim the edge. The edge quality and accuracy are not as good as die punching, and the efficiency Not high either. The advantage of punching and shearing is that the production preparation cycle is short, and it is often used for small batch production.
Contact us for more information. Thank you
Nicole
Company: Baoji Jimiyun Dynamic Co., Ltd
Cuntry:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 13369210920
Gmail:nicole@jmyunti.com
Website:www.jm-titanium.com
