Titanium Sheet Metal Fabrication

How to process titanium sheet metal fabrication
There are many methods for machining titanium alloys, mainly including: turning, milling, boring, drilling, grinding, tapping, sawing, EDM, etc.
1. Turning and boring of titanium alloy​
The main problems of turning titanium alloy are: high cutting temperature; serious tool wear; large cutting rebound. under suitable processing conditions. And neither turning nor boring are particularly difficult operations. For continuous cutting, batch production or cutting of large amounts of metal, carbide tools are usually used. For form cutting, turning or chipping, it is suitable to adjust steel tools, and cermet tools are also used. Like other machining operations, constant forced feed is always used to avoid cutting interruptions. Do not stop or slow down while cutting. Generally, do not cut it, but cool it thoroughly; the coolant can be 5% sodium nitrate aqueous solution or 1/20 soluble oil emulsion aqueous solution. Before forging, the oxygen-enriched layer on the surface of the original bar should be turned with a cemented carbide tool. The cutting depth should be greater than the thickness of the oxygen-enriched layer. Holes are finely machined, especially for thin-walled titanium alloy products. When drilling, prevent burns and clamping deformation of parts.
2. Drilling of titanium alloy
When drilling titanium alloys, it is easy to produce slender and curly chips, and at the same time, the drilling heat is high, which makes the chips excessively accumulate or stick to the edge of the drilling hole, which is the main reason for the difficulty of drilling titanium alloys. When drilling, you should use a short and sharp drill bit and low-speed forced feed, repeatedly tighten the support frame and fully cool it, especially for deep hole drilling. During the drilling process, the drill bit should remain in the drilling state in the hole, no idling in the hole is allowed, and the drilling speed should be kept low and constant. Carefully drill the holes. When the hole is about to be drilled, it is best to retract the drill bit in order to clean the bit, drill the hole and remove chips. When the final hole is broken, the forced feed can be used to obtain a smooth hole.
3. Strike the titanium alloy
Titanium tapping is probably the most difficult machining process. When tapping, the removal of titanium chips is limited, and the severe tendency to bite can cause poor thread fit, which can cause the tap to seize or break off. Titanium tends to dry tighten on the tap after tapping is complete. Therefore, the processing of blind holes or overly long through holes should be avoided as far as possible to prevent the surface roughness of the internal thread from increasing or the phenomenon of broken cones. At the same time, the tapping method should also be continuously improved, such as grinding the trailing edge of the tap. Axial chip flutes are ground at the tooth tips along the length of the tooth flank. On the other hand, taps with an oxidized, oxidized or chromed surface are used to reduce galling and wear.
4. Sawing processing of titanium alloy
When sawing titanium alloy, low surface speed and continuous forced feed should be used. Experiments have proved that the coarse-tooth high-speed steel saw blades with a pitch of 4.2 mm to 8.5 mm are suitable for sawing titanium alloys. If you use band saw titanium alloy, the saw blade pitch is determined by the thickness of the workpiece, generally 2.5 mm ~ 25.4 mm, the thicker the material, the larger the pitch. At the same time, the forced supply capacity and the required coolant must be maintained.
5. EDM of titanium
EDM of titanium alloys requires an operating clearance between the tool and workpiece. The range of the gap is preferably 0.005mm±0.4mm. Smaller clearances are typically used for finishing where a smooth surface is required, while larger clearances are used for roughing where rapid metal removal is required. Copper and zinc are the best electrode materials.

Q. How do we guarantee the quality?
A: Always a pre-production sample before mass production;
Always carry out final inspection before shipment;

Q. What services can we provide?
A: Delivery terms accepted: FOB, CFR, CIF, EXW, CIP;
Accepted payment currencies: USD, EUR, CNY;
Accepted payment methods: T/T, L/C, Western Union;

Q: Can you do custom designs and sizes?
A: Yes, ODM and OEM services are available.

Q: How long is your production lead time?
A: Goods will be finished within 15-35 days after sample confirmed.

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