CN103350232A

CN103350232A - Production method of diamond circular saw blade by cold-press molding and hot-press sintering

Info

Publication number: CN103350232A
Application number: CN 201310327033
Authority: CN
Inventors: 王建国
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2013-10-16

Abstract

The invention discloses a production method of a diamond circular saw blade by cold-press molding and hot-press sintering. The production method is characterized by comprising the following steps of: preparing a metal bonding agent and a diamond according to a design scheme with side-edge layers and a middle layer, respectively premixing into a molding material, adopting the current advanced and matured powder granulating process to granulate the molding materials of the side-edge layer and the middle layer, carrying out horizontal pre-pressing by adopting a cold-pressing machine and molding on the granulated side-edge layers so as to be in a 2-3mm piece shape; conveying the cold-press molded piece to be burnt into a sintering furnace for hot-press sintering, so as to obtain the diamond circular saw blade. The production method disclosed by the invention has the advantages that due to the separated design of the concentration and the granularity of the diamond in the side-edge layer and the middle layer and the adjustment of the concentration and the granularity of the diamond, the side-edge layer is wear-resistant, so that the side protecting effect is achieved, the cooling effect of the saw blade in the cutting process is improved, the phenomenon of piece burning is effectively avoided, and the stable and lasting maintenance of the cutting efficiency of the blade is guaranteed.

Description

The production method of cold moudling-thermal pressing sintering diamond saw blade

Technical field

The present invention's invention relates to diamond disc, especially about the high-grade processing of stone of a kind of production cold moudling-hot pressed sintering multi-layer compound structure diamond disc and production method thereof.

Background technology

Cold moudling-thermal pressing sintering diamond saw blade refers to be filled in the punching block and a cold moudling of matrix molding mass (the mixed uniformly powder of diamond and metallic bond) is disposable, then criticize being filled to sintering furnace, produce diamond saw blade by hot-pressing sintering technique.The diamond disc that these class methods are produced is prone to following point in cutting process: 1, the cutting front is prone to bread-like; The bread-like cut surface increases the work area between saw blade and workpiece to be machined, causes Cutting Drag to increase, and final saw blade sharpness reduces, and affects operating efficiency; Bread-like cut surface solid capacity in cutting process is little, easily causes cooling effect insufficient, causes the generation of " burning sheet " phenomenon in the cutting process, burns sheet " in a single day generation of phenomenon, will greatly reduce operating efficiency, even cause security incident.

Summary of the invention

For existing weak point in the above-mentioned prior art, the purpose of invention is to provide a kind of method that high-grade processing of stone is used cold moudling-thermal pressing sintering diamond saw blade of producing.

Technical scheme of the present invention is achieved in the following ways: the production method of cold moudling-thermal pressing sintering diamond saw blade is characterized in that:

At first, after according to side layer and intermediate layer design metallic bond and diamond being prepared, premix is made molding mass respectively, used metallic bond is adopted as the CSB alloyed powder and prepares as basic ingredient, wherein: CSB alloyed powder 50～60wt%, copper 20～30 wt %, nickel 10～15 wt %, cobalt 10～5wt %, tin 6～10 wt %.

Secondly, adopt advanced and ripe at present powder prilling to carry out granulation on side layer and intermediate layer molding mass, purpose is to be enhanced to the moulding mixture material uniformity and molding mass flowability, avoids next procedure stand material uneven phenomenon to occur;

Again, the side formable layer material after the granulation is adopted the horizontal pre-molding of cold press, make 2～3mm sheet;

At last, with cold moudling send into the saw blade that hot pressed sintering can be made by the way in the sintering furnace wait burning after sheet is criticized dress, diamond working layers is divided into the multi-layer compound structure in two side layers and an intermediate layer.

The present invention, side layer and intermediate layer diamond concentration and granularity be design separately, adjustment by diamond concentration and granularity, make the side layer more wear-resisting, thereby in process, be difficult for being worn, reach and protect the side effect, improved the cooling effect in the saw blade cutting process, effectively avoid burning the generation of sheet phenomenon, guaranteed that the saw blade cutting efficiency stablizes lasting maintenance.

The specific embodiment

The production method of cold moudling-thermal pressing sintering diamond saw blade, at first, after according to side layer and intermediate layer design metallic bond and diamond being prepared, premix is made molding mass respectively, and (this alloyed powder is that Henan Cut-Stone Science And Technology Co., Ltd adopts its patented technology＜patent name to the CSB alloyed powder that used metallic bond adopts Henan Cut-Stone Science And Technology Co., Ltd to provide: for the preparation of the method for prealloy powder; The patent No.: ZL200510048519.8〉produce) as the basic ingredient preparation, wherein: CSB alloyed powder 40～60wt%, copper 20～40 wt %, nickel 5～15 wt %, cobalt 10～15 wt %, tin 6～14 wt %.

Secondly, adopt advanced and ripe at present powder prilling to carry out granulation on side layer and intermediate layer molding mass, purpose is to be enhanced to the moulding mixture material uniformity and molding mass flowability, avoids next procedure stand material uneven phenomenon to occur.

Again, the side formable layer material after the granulation is adopted the horizontal pre-molding of cold press, make 2～3mm sheet.

The present invention, side layer and intermediate layer diamond concentration and granularity be design separately, adjustment by diamond concentration and granularity, make the side layer more wear-resisting, thereby in process, be difficult for being worn, reach and protect the side effect, this has not only been avoided the generation of " binding " phenomenon, and since the intermediate layer not by " reinforcement ", therefore the intermediate layer more easily is worn than side layer, makes the cutting front intermediate layer groove occur in the cutting process, when increasing cutting edge, also be easy to the mutual grinding effect of workpiece under form chip area, improve the cooling effect in the saw blade cutting process.

Claims

1. the production method of cold moudling-thermal pressing sintering diamond saw blade is characterized in that:

At first, after according to side layer and intermediate layer design metallic bond and diamond being prepared, premix is made molding mass respectively, used metallic bond is adopted as the CSB alloyed powder and prepares as basic ingredient, wherein: CSB alloyed powder 50～60wt%, copper 20～30 wt %, nickel 10～15 wt %, cobalt 10～5wt %, tin 6～10 wt %;