According to the survey, many of Sagwell's customers have recently transformed into making diamond tool matrixes with iron-based alloy powders. The biggest advantage of this matrix is that it can save costs and make their products more competitive in the market. So, for high-iron-based matrixes, do you know how to maximize its role?
1. High temperature tolerance:
When iron-based alloy powder is used as a matrix material to replace other materials such as cobalt (Co), the diamond's ability to withstand high temperatures will decrease. When the iron powder content reaches a certain level (such as 45%), even at a relatively low hot pressing sintering temperature (such as 880°C), diamond may begin to graphitize because iron powder has a strong corrosive effect on diamond.
2. The difficulty of sharpness control increases:
During the high-temperature sintering process of the diamond tool matrix, the iron-based alloy powder may produce fusion and growth of powder particles, causing the grain coarsening of the matrix structure, resulting in excessive wear resistance of the matrix, but relatively poor sharpness and difficulty in regulation. This is a common problem faced by the diamond product industry, and it needs to be modified by adding ultra-fine materials, etc., to refine the sintered structure, weaken the wear resistance of the sintered body, and thus improve the sharpness of the diamond tool.
Regarding the first point, the technical staff of Sagwell suggested to our customers that alloying ultrafine materials, alloying iron with other materials such as nickel, tin, zinc, etc., can soften the corrosion of iron on diamond to the greatest extent. Regarding the second point, it is also ultrafine. The matrix structure of ultrafine powder material after sintering is fine, which correspondingly increases the holding power of the matrix on diamond.
Please feel free to consult for more details.
Email: export@sagwell.com