Corn Milling Cutter for Bakelite Epoxy Board Circuit Board Milling Tools

Engraving machine cutter PCB milling cutter carbide corn milling cutter

Corn milling cutter: also known as ridge cutter, gong cutter or pineapple cutter, generally suitable for processing synthetic materials such as synthetic stone, bakelite, epoxy board, wave fiber board and so on. The product is made of cemented carbide rod, which has high hardness, high wear resistance, high strength, resistance to bending and breakage, and long tool life.
1. The use of ultra-fine grain cemented carbide materials has good milling performance, ensuring high work efficiency;
2. It has sufficient bending strength and wear resistance;
3. Milling slots, holes and edges of the board, the surface is clean, tidy and free of burrs

 


Strict quality testing: 
Measuring Instrument 
The milling cutter adopts the german zoller 3d measuring instrument to achieve 100% inspection of the product,which can ensure the pass rate of each tool is 100%.

Selected quality bars:
German imported bar
The milling cutter adopts Germany imported hard carbide bar,which has strong wear resistance and high hardness to ensure the service life of the tool.

Large inventory:
Wide sizes of models
We have a stock of nearly 2,000 tools and over 100,000 pieces that can be shipped quickly to meet orders
  

Corn milling cutter: also known as ridge cutter or gong cutter or pineapple cutter, generally suitable for processing synthetic materials such as synthetic stone, wood board, bakelite board, epoxy board, fiberglass board and other insulating materials. The product is made of cemented carbide rod, which has high hardness, high wear resistance, high strength, resistance to bending and breakage, and long tool life.

- The use of ultra-fine grain cemented carbide materials has good milling performance, ensuring high work efficiency;
- It has sufficient bending strength and wear resistance;
- Milling slots, holes and edges of the board, the surface is clean, tidy and free of burrs
- Solid carbide tungsten substrate High quality cemented carbide substrate,High hardness, high wear resistance, sharp edge
- Processing with high-precision equipment,High processing accuracy, sharp non-stick knife, high cutting finish
- The blade is sharp without burrs,Surface cutting is clean and tidy, which improves work efficiency


Carbide production

The productionprocess of powder-metallurgical products basically includes the four steps of powder preparation, forming, sintering andfinishing.

Tungsten carbide production
The APT (ammonium para-tungstate) is calcined into tungsten oxide under high te-mperature. Subsequently the oxide is reduced to tungsten metal in a hydrogen atmosphere. The metal powder is then mixed with carbon and carburised under inert atmosphere at high temperatures. The production parameters are decisive for the WC grain size in the sintered carbide.

Powder preparation
The tungsten carbide is intensely mixed with the binder metal cobalt, nickel or iron, various grain growth inhibitors and materials,which promote compaction, by wet grinding so that a homogeneous suspension is created. Afterwards, the suspension is dried in a spray tower to produce a granulate with good flow characteristics. This granulate represents the basis for all forming processes.

Metal forming
The objective of the forming process is to obtain a near net shape sample. Pressing is normally carried out at room temperature with pressures reaching up to several tons per square centimetre.There are several ways of pressing blanks:During isostatic cold pressing the powder is filled into an elastic flexible hose and pressed into acompacted form through high liquid pressure. The powder blocks which are produced in this way can then be processed mechanically. All common machining methods like milling, cutting, drilling or turning maybe applied.In uniaxial pressing the pressing tool consists of a die and an upper and a lower punch. The carbide powder is filled into the die and then compacted to create the so called green carbide,which is ejected from the pressing die.Extrusion pressing is mainly used to produce rectangular bar
or cylindrical rod, with or without axial hole(s). A plasticiser is added to the powder. The resulting paste is pressed through an extrusion nozzle. Before sintering, the plasticiser must be evaporated in special drying furnaces. Metal Injection Moulding (MIM) is a process used to produce
more complex forms which cannot be produced by direct pressing. The paste preparation is similar to the extrusion process.

Sintering process
The sintering process converts the blank into a homogeneous and dense carbide with a high level of hardness. The material is sintered at temperatures between 1,300 and 1,500 °C (liquid phase sintering) and sometimes also at high pressure (up to 100 bar). The volume is reduced by up to 50 % during this process.

Finishing
In order to achieve the final requirements of surface finish, tolerances,etc. carbide parts can be subjected to a series of finishing processes such as grinding, spark erosion and coating.


Zhuzhou Huijin Cemented carbide Co., Ltd is located in Zhuzhou City, Hunan Province, China, where is the largest tungsten carbide producing area in China. Our main pr-oducts inclue: Tungsten carbide rods, carbide strips, carbide dies and bushes, tungsten carbide roll rings, carbide disc cutters, carbide end mill cutters, carbidestud and pins, tungsten water jet cutters, precision tools, tungsten carbide grits and powder, welding rods, ceramet inserts, PCD and CBN tools, non-standard and deep-processing products and so on. We also provide very good quality of boron carbide, silicon carbide nozzles. 
Technology and Quality creates a bright future.Looking forward to your cooperation! 



Our company gathered the professional staff members for designing, producing and saling. Our workers are well trained and experienced. Our team is honest, positive, keeping promise, working hard and carefully. We sincerely hope we can provide our clients with good quality, moderate price together with professional service. We have advanced equipment, test facilities and professional employees. We strictly carry on ISO9001: 2008 requirements to guarantee the quality.