Machining method for diamond circular saw blade

Abstract

The invention provides a diamond circular saw blade. The diamond circular saw blade is characterized in that the diamond circular saw blade comprises, by weight, 40-45% of metallic bonding agents, 30-32% of FC30 alloyed powder, 20-25% of copper and 6-8% of tin. A machining method for the diamond circular saw blade comprises the following steps of (1) working layer burdening, (2) pelleting, (3) cold pressing, (4) hot pressed sintering, (5) exposedness of a cutting edge, (6) paint spraying, and (7) detection and storage in a warehouse. According to the machining method for the diamond circular saw blade, a diamond bit tool and a steel base body are integrally formed through cold pressing, and welding is not required. Bonding force between part of the tool bit and the base body is strong, the phenomenon of tooth falling is not prone to occurring, a saw blade base body is assembled into a cold pressing forming steel mould, and forming is achieved through two-time feeding and one-time integral cold pressing. The phenomenon of piece burning is avoided, so that the saw blade cutting efficiency is stably and lastingly kept.

Description

technical field [0001] The invention relates to an integral cold press forming — Hot-pressed sintered diamond circular saw blades are mainly used for cutting granite slabs on hand-held cutting equipment. Background technique [0002] Overall cold forming — Hot-pressed sintered diamond circular saw blades are cold-pressed, assembled into cold-pressed steel molds in the order of "steel matrix → molding material", and directly press the molding material (the powder evenly mixed with diamond and metal binder) on the diamond Saw blades are placed on the circumference of the steel matrix, and then the cold-pressed forming pieces are sent to the hot-press sintering furnace to sinter the diamond saw blades, which means that the diamond blade and the steel matrix are cold-pressed as a whole without welding. The diamond circular saw blades produced by this process usually have a steel base diameter in the range of 100mm to 400mm. Among them, the steel base diameter below 250mm is ge...

AI Technical Summary

Problems solved by technology

[0003] Overall cold forming — The hot-pressed sintered diamond circular saw blade is made by directly pressing the molding material on the circumference of the steel substrate of the diamond saw blade by cold pressing, and then sending the cold-pressed shaped piece into a hot-pressed sintering furnace for sintering. This process produces diamond The bonding force between the saw blade and the diamond blade part and the steel matrix is ​​not strong. If the cutting resistance is too large during the cutting process, the phenomenon of "tooth loss" will easily occur, which will seriously affect the cutting and even cause safety accidents.

In addition, the molding material of the diamond segment of the diamond circular saw blade produced under the current process conditions is one-time filling and pressing of the matrix, so the two sides of the diamond circular saw blade cannot be "reinforced". Therefore, in the cutting process The following problems are likely to occur in the process: 1. The front of the cutting is prone to appear "bread" shape,

[0004] The "bread"-shaped cutting surface increases the working area between the saw blade and the workpiece to be processed, resulting in an increase in cutting resistance, and finally reduces the sharpness of the saw blade, which affects work efficiency; at the same time, the "bread"-shaped cutting surface " Small amount of chip removal can easily lead to insufficient cooling effect, leading to the phenomenon of "burning chips" in the cutting process. Once the phenomenon of "burning chips" occurs, it will greatly reduce work efficiency and even lead to safety accidents

2. The cutting side is easy to wear

Since the molding material is filled and pressed into the matrix at one time, the two sides of the diamond circular saw blade cannot be "reinforced". The diamond working layer becomes "thinner". If there is a grinding action between the workpiece and the substrate, the grinding surface between the saw blade and the processed workpiece will increase instantaneously, resulting in an instantaneous increase in cutting resistance, thereby causing the phenomenon of "clamping saw". When the phenomenon of "clamping saw" is slight, it will lead to a decrease in cutting efficiency, and in severe cases, it will also cause the phenomenon of "burning pieces", and even cause the cutting to fail, and the saw blade will be scrapped