Cutting Tool Coating Orientation for Wear and Peeling Balance
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Solution Overview
Problem
Existing coated tools for cutting processes lack optimal durability and balance between hardness and peeling load, leading to insufficient wear resistance and fracture resistance.
Innovation Solution
A coated tool with a coating layer featuring AlTiN or AlCrN cubic crystals, where the (111) and (200) planes are oriented to include multiple peaks in X-ray intensity distributions, enhancing the tool's durability by balancing hardness and peeling load through controlled crystal orientation and layer thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the coating layer is made harder to improve wear resistance, then wear resistance is improved, but the balance between hardness and peeling load deteriorates
Solution Approach 1:
The patent changes physical parameters by precisely controlling the tilt angles of crystal planes and coating thickness to achieve the optimal balance point between hardness and peeling load, preventing the deterioration of material composition stability
2Duration of action of stationary object
If the coating film is made thicker to improve durability, then wear resistance is improved, but fracture resistance deteriorates due to increased peeling load
Solution Approach 1:
The patent applies parameter changes by optimizing the coating thickness within the specific range of 5-20 μm and controlling crystal orientation parameters, achieving the optimal balance between durability and fracture resistance
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The coated tool exhibits improved durability, wear resistance, and fracture resistance, allowing for stable and prolonged cutting process performance.
Implementation Method 1
the (111) and (200) planes are oriented to include multiple peaks in X-ray intensity distributions, enhancing the tool's durability by balancing hardness and peeling load through controlled crystal orientation
Implementation Method 2
multiple peaks in X-ray intensity distributions
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
A coated tool according to the present disclosure includes a base member and a coating layer located on the base member. The coating layer includes a cubic crystal that includes one or more kinds of elements selected from Groups 4, 5 and 6 in the periodic table, Al, Si, B, Y and Mn, and one or more kinds of elements selected from C, N and O. The coating layer includes a first peak located in a range of 0° to 90° and a second peak located at a higher angle side than the first peak in a distribution of X-ray intensity indicated at α axis of a pole figure, the X-ray intensity regarding a (111) plane of the cubic crystal. The coating layer further includes a valley part between the first peak and the second peak, and the valley part includes the X-ray intensity smaller than the X-ray intensity at each of the first peak and the second peak. A cutting tool according to the present disclosure includes a holder which extends from a first end toward a second end and includes a pocket located at a side of the first end, and the coated tool located in the pocket.