Hardened alloy milling cutters are widely used due to their small shape tolerances. However, since blade replacement is not direct, most cutters are scrapped after chipping, significantly increasing processing costs.

1. Material Processing Attributes

During the cutting of titanium alloys, due to their poor thermal conductivity, chips tend to adhere near the tip and edge of the tool or form built-up edges. This creates high-temperature zones on the front and rear cutting surfaces near the tip, leading to the loss of tool hardness and increased wear. In continuous cutting under high-temperature conditions, the adherents and welds are impacted by subsequent processing, and in the process of being forcibly dislodged, they carry away some of the tool material, causing tool damage and breakage. Additionally, when the cutting temperature exceeds 600°C, a hardened layer forms on the part surface, exerting a strong abrasive effect on the tool. Titanium alloys have a low elastic modulus and significant elastic deformation, with a large amount of workpiece surface rebound near the trailing face, resulting in a large contact area between the machined surface and the trailing face, leading to severe wear.

2. Normal wear and tear

During normal production and processing, severe blade wear occurs when the excess of continuous milling titanium alloy parts reaches 15mm-20mm. Continuing to mill results in low efficiency and the finished parts have poor surface finish, failing to meet production and quality requirements.

3. Misoperation

During the production and processing of titanium alloy casting boxes and lids, improper clamping, unsuitable cutting depth, excessive spindle speed, and insufficient cooling can lead to blade chipping, damage, and breakage. These defective milling cutters, in addition to being unable to perform effective milling, can also cause surface defects such as concave machining surfaces during the cutting process due to "biting the blade." This not only affects the machining quality of the cutting surface but can also result in the scrapping of the workpiece in severe cases.