Cemented carbide die is an alloy material made regarding hard compound of refractory material and binding metal via powder metallurgy process. The hardness of cemented carbide can be quite high, so pay attention towards the method when polishing this cemented carbide die.
lThe polish on the powder metallurgy mould
lThe polish on the tungsten carbide die in addition to carbide punch dies
The polish from the powder metallurgy mould
There is still many polishing methods for natural powder metallurgy molds by manual operation. The main gear used are brush, file, scraper, etc. However, regular operation has two problems, one is that the quality of polishing is difficult to manage, judging by the operation experience, the other could be that the production efficiency is definitely not high, only one product can be processed at a time, the labor intensity is usually large, the production charge is high, it is difficult to accomplish large-scale production.
In accessory to manual polishing, there is mechanical polishing, which is more convenient than manual polishing.
1. Powder metallurgy die polishing by way of rolling mill
The twisting brush drives the workpiece to be able to rotate. During the going process, the brush loads the burrs for the workpiece and makes the burrs fall off, so that you can achieve the purpose associated with polishing the powder metallurgy mould. Reasonable selection of brush material and rotation speed and also other parameters, can be dealt with with different powder metallurgy die.
2. Polish with polishing off machine
Finishing machine is mainly divided into vibration finish machine, centrifugal light maintenance machine, magnetic light maintenance machine, flow finishing machines, roller light decoration equipment, which vibration finishing machine, roller light decoration machine has been widely used in powder snow metallurgy die polishing community.
3. Sand blasting polishing
Sand blasting is usually to use compressed air because power to form some sort of high-speed jet beam, the high-speed jet to the powder metallurgy mold for being treated, the use of abrasive effect on the powder metallurgy mildew surface and cutting motion, so that the surface on the carbide die to get a certain degree of personal hygiene and different roughness, to improve the mechanical properties belonging to the carbide die surface.
SOME. Heat polishing
The principle could be that the powder metallurgy mould to be polished is placed from a sealed container with enough strength, and then fed in to a certain proportion of pre-mixed combustible propane, which is ignited by spark plug to produce an instant high temperature to remove the burrs for the carbide die surface. The polishing effect of this method is good, it will not affect the business of parts, it is applicable to a wide range, but the cost is definitely relatively high.
The polish on the tungsten carbide die and carbide punch dies
ONE PARTICULAR. Chemical polishing
The convex part with tungsten carbide die and carbide punch die in the chemical method can be dissolved before it uses obtain a smooth outside. Complex shapes can often be polished without complex gear, and many pieces can be polished as well.
2. Electrolytic polishing
Exactly the same basic principle as element polishing, by the selective dissolution from the tungsten carbide die along with carbide punch die surface from the small projections, smooth your surface. Compared with substance polishing, the cathode reaction might be eliminated and the effect is best.
3. Ultrasonic polishing
The carbide die is placed in the abrasive suspension and used in the ultrasonic field mutually, and the abrasive is ground and polished for the surface of the carbide die because of the vibration of the ultrasonic influx. This method will not cause deformation in the cemented carbide, but it truly is difficult to manufacture plus install tooling.
4. H2o polishing
Fluid polishing is driven by hydraulic stress, so that the water medium carrying abrasive particles flows backward and forward across the surface in the carbide die at dsl internet cable to achieve the objective of polishing.
5. Magnetic farming and polishing
Magnetic abrasives are utilized to form abrasive brushes under the action on the magnetic field to slow the tungsten carbide expire and carbide punch pass away.
The mold determines the forming of the part. For the accuracy with the part, the polishing of the carbide die is vital.
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