チタン合金部品の加工技術

チタン合金部品の旋削加工
チタン合金部品の旋削品はより良好な表面粗さを容易に得ることができます, 加工硬化は深刻ではない, ただし切断温度が高い, そして工具はすぐに磨耗します. こういった特徴に応えて, 工具と切削条件に関して主に以下の対策を採用しています。:
旋削工具材料: YG6, YG8, 工場の現状に合わせてYG10HTを選定.
旋削工具の幾何学的パラメータ: ツールの適切な前後角度, と工具先端の丸み.

Lower cutting speed, 中程度の送り速度, deeper cutting depth, and sufficient cooling. When turning the outer circle, the tool tip cannot be higher than the center of the workpiece, otherwise the tool will break. When precision turning and turning thin-walled titanium parts, the cutting tool's entering angle should be large, 一般的に 75-90 度.

Milling of titanium alloy parts
Milling of titanium alloy parts is more difficult than turning. Because milling is an intermittent cutting, and titanium chips are easy to bond with the cutting edge. When the sticky chip cuts into the workpiece again, the sticky chip hits a small piece of the tool to form a chipping edge, which greatly reduces the durability of the tool.

Titanium alloy milling method: generally use down milling.
Tool for milling titanium alloy: high-speed steel M42.

一般的に, down milling is not used for processing titanium alloys. Due to the influence of the open space of the screw and nut of the machine tool, the milling cutter acts on the workpiece during down milling. The component force in the feed direction of the part is the same as the feed direction of the tool, which is easy to cause the work table to move freely and form a broken tool.

Titanium alloy parts tapping
For the tapping of titanium alloy parts processing products, due to the small chips, it is easy to bond with the blade and the workpiece, resulting in a large surface roughness and large torque. When tapping taps and improper selection of improper operation can easily form a work-hardened, low processing power and when there is the phenomenon of broken taps.
It is necessary to prefer a threaded tapping tap with a proper thread, and the number of teeth should be less than the standard tap, 一般的に 2 に 3 歯. 切削テーパ角は大きくする必要があります, テーパー部分は一般的に 3 に 4 ねじの長さ. 切りくずの除去を容易にするため, 負の傾斜角もカッティングコーンで研削できます. Try to choose short taps to add rigidity to the taps. The inverted taper part of the tap should be appropriately enlarged compared to the specification to reduce the conflict between the tap and the workpiece.