Cemented carbide die is an alloy material made connected with hard compound of refractory material and binding metal by way of powder metallurgy process. The hardness of cemented carbide is extremely high, so pay attention towards method when polishing that cemented carbide die.
lThe polish in the powder metallurgy mould
lThe polish of the tungsten carbide die in addition to carbide punch dies
The polish on the powder metallurgy mould
There is still a wide range of polishing methods for natural powder metallurgy molds by handbook operation. The main tools used are brush, archive, scraper, etc. However, guide book operation has two cons, one is that the caliber of polishing is difficult to overpower, judging by the function experience, the other could be that the production efficiency is not really high, only one product can be processed during a period, the labor intensity is actually large, the production fee is high, it is difficult to accomplish large-scale production.
In add-on to manual polishing, another highlight is mechanical polishing, which is far more convenient than manual polishing.
A SINGLE. Powder metallurgy die polishing by means of rolling mill
The twisting brush drives the workpiece to be able to rotate. During the coming process, the brush loads the burrs within the workpiece and makes the burrs fall off, so as to achieve the purpose involving polishing the powder metallurgy mildew. Reasonable selection of hair brush material and rotation speed and also other parameters, can be dealt with with different powder metallurgy perish.
2. Polish with concluding machine
Finishing machine is especially divided into vibration finish machine, centrifugal light decoration machine, magnetic light design machine, flow finishing device, roller light decoration equipment, which vibration finishing device, roller light decoration machine is widely used in natural powder metallurgy die polishing industry.
3. Sand blasting polishing
Sand blasting could be to use compressed air because power to form the high-speed jet beam, the high-speed jet towards the powder metallurgy mold to become treated, the use of abrasive affect the powder metallurgy mold surface and cutting motion, so that the surface on the carbide die to get yourself a certain degree of hygiene and different roughness, to further improve the mechanical properties of the carbide die surface.
4. Heat polishing
The principle is usually that the powder metallurgy mould for being polished is placed inside a sealed container with plenty of strength, and then fed into a certain proportion of pre-mixed combustible petrol, which is ignited through the spark plug to produce an instant high temperature to remove the burrs to the carbide die surface. The polishing effect of the method is good, it's going to not affect the firm of parts, it is applicable to a number of, but the cost can be relatively high.
The polish with the tungsten carbide die and also carbide punch dies
YOU. Chemical polishing
The convex part with tungsten carbide die and carbide strike die in the chemical moderate can be dissolved instead of obtain a smooth surface. Complex shapes can possibly be polished without complex products, and many pieces can be polished while doing so.
2. Electrolytic polishing
Similar basic principle as compound polishing, by the selective dissolution from the tungsten carbide die along with carbide punch die surface from the small projections, smooth the surface. Compared with inorganic polishing, the cathode reaction might be eliminated and the effect is best.
3. Ultrasonic polishing
The carbide die is put into the abrasive suspension and slipped into the ultrasonic field collectively, and the abrasive will be ground and polished about the surface of the carbide die with the vibration of the ultrasonic wave. This method will not cause deformation with the cemented carbide, but its difficult to manufacture plus install tooling.
4. Liquid polishing
Fluid polishing is definitely driven by hydraulic pressure, so that the water medium carrying abrasive particles flows between the two across the surface belonging to the carbide die at broadband to achieve the reason for polishing.
5. Magnetic running and polishing
Magnetic abrasives widely-used to form abrasive brushes under the action of the magnetic field to work the tungsten carbide die and carbide punch stop functioning.

The mold determines the forming on the part. For the accuracy with the part, the polishing of the carbide die is very important.
https://www.burraycarbide.com/Carbide-Dies-Moulds-pl3208743.html
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