High-mass sintered diamond drill bit for processing aluminum oxide ceramic and preparation method of high-mass sintered diamond drill bit

Abstract

The invention discloses a high-mass sintered diamond drill bit for processing aluminum oxide ceramic and a preparation method of the high-mass sintered diamond drill bit. The blank body of the sintered diamond drill bit comprises Fe powder, Cu powder, Ni powder, Sn powder and Ti powder. According to the sintered diamond drill bit prepared through the blank body, the height of the work layer is 4.2-4.5 mm, the wall thickness is 3.5-3.8 mm, the diameter is 26-29 mm, the water gap number is 4, the shape is rectangle, the diamond grain grade is 80 / 100-100 / 120, and the diamond abrasive particle concentration is 83-89%. The preparation method of the diamond drill bit comprises the steps that a base body is selected, the blank body is prepared, the blank body is mixed with diamond abrasive particles, a diamond sintered body is prepared through sintering, the diamond sintered body is fixed to the base body, and the diamond drill bit can be prepared. The high-mass sintered diamond drill bit hasthe advantages that the prepared blank body has high bezel setting capacity on the diamond abrasive particles, and the collapsed and cracked degree of a hole outlet is lowered; and the collapsed andcracked degree of the hole outlet is also lowered through the adopted drill bit structure parameters.

Description

technical field [0001] The invention relates to a drill for processing alumina ceramics and a preparation method thereof, in particular to a high-quality sintered diamond drill body and structure and a preparation method of the drill, belonging to the technical field of mechanical processing and manufacturing. Background technique [0002] Alumina ceramics have a series of excellent properties such as high mechanical strength, high hardness, high insulation resistance, low high-frequency dielectric loss, corrosion resistance and high temperature resistance, and because of its wide source of raw materials and relatively cheap price, it is widely used In the fields of electronics, electrical appliances, machinery, textiles and aerospace. Alumina ceramics are the ceramic materials with the widest application, the widest application and the largest output among oxide ceramics. In the traditional processing of alumina ceramics, hole processing is the most common. However, in the...

AI Technical Summary

Problems solved by technology

In the traditional processing of alumina ceramics, hole processing is the most common. However, in the process of hole processing, the quality of the hole entrance is good, and the collapse phenomenon often occurs at the hole exit (the collapse ratio k at the hole exit and the collapse depth H is the evaluation index of the hole export quality, the collapse ratio k is the ratio of the diameter of the flaring circle D to the original hole diameter d, the smaller the collapse ratio and the shorter the collapse depth, the better the hole export processing quality, the collapse ratio and the collapse ratio Depth diagrams are as follows figure 1 , figure 2 shown), which seriously affects the processing quality of the hole

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