To extend the service life of circular mould is to use correctly

First of all thank you for choosing ZhengChang high quality moulds, effectively improve circular mould production ouput, in addition to the circular mould itself quality, proper operation and maintenance can effectively extend the using life of the circular mould. Please read carefully to put the circular mould to a best using effect.

One,To have a basic scheduled maintenance on the granulator.
1.As granulator belongs to the feed mills host device, firstly manufacturer should have daily maintenance, weekly maintenance and monthly maintenance on the main equipments to ensure the granulator keep good ,stable and non-beating working condition； if the equipment is fault or some wearing parts wear down, especially the driving wheel and spindle，should be maintained immediately and replaced the spare parts, to ensure the normal use of concentric circles on the mould..
2.Install iron absorption device onto the entrance of feed, so as to avoid metal objects falling into the granulating indoor, which will cause serious damage and make the circular mould crack
3.When installing circular mould, should check the granulating indoor driving key, hoop, driving wheel wear-resisting bushing, wear-resistant bushing on the two ends of the compression roller shaft, gap adjusting wheel and feeding scraper, cutter and etc , such easily damaged parts  wearing condition , and the replacement should be replaced in a timely manner, to ensure the granulator operate normally. If the hoop wear down,the circulare mould cannot be holden tightly , it will cause the granulator more vibration  and  seriously effect the mould service life, and even make the mould cracking; it should be replaced timely, moreover the wearing of feeding scraper will cause decline of the granulator production.

Two,Circular Mould Operating Maintenance
1.Due to the types of the production of feeds are different, much involving with the difference of  the circular mould material,opening porosity rate, inner taper hole, mould hole effective length and the pressure relief hole design, therefore should look for enterprises with advanced professional technique, combining with feed ingredients and the actual usage condition to design, customized different circular moulds, to ensure the circular mould to prove maximum using value
2.Using prawn feed new circular mould, must be replaced by a new compression roller processed by concentric mill to match with.
3.The gap between the compression roller and the circular mould must be controlled between 0.1 0.3 mm, don't let a eccentric roller be exposed to the mould surface or one side clearance is too large, which is imperceptible to the naked eye during installation, to avoid the increased wearing of the circular mould and compression roller or no feed discharge phenomenon.
4.When granulator starts, feed rate must be from low speed to high speed, do not speed from the start, which can cause damage to the mould and granulator or cause the mould materials plugging because of the sudden overload。

Three,Circular Mould Maintenance
1. When the circular mould don't need work for a period of time , should squeeze out the original feed by using a non-corrosive oil , otherwise, the mould heat will dry and harden the feed that keep inside of the mould , which will cause following situations:
( 1 ) Start to work, the mould hole will be blocked, no feed discharge；
( 2 ) Begin to produce, mould under high stress and weaken its strength, maybe cause mould cracking；
( 3 ) Part of the holes will be plugged, output lessen, efficiency is brought down.
2. After being used for a period of time, should check the circular mould inside surface to see if it has locally convex part, if it has this phenomenon, use polishing machine to grind off convex part , to ensure the output of the mould as well as the compression roller service life.
3. If mould holes are blocked and no feed discharge, adopting oil soak or granulating again after cooking with oil, if still can't granulate ,can use electric drill to drill out the blocking materials ,and then reoccupy after grinding and polishing by oily materials with fine sand.
4. When loading and unloading of the circular mould, do not use a hammer or any other hard steel tools to beat mould surface.
5. Should do circular mould per shift using record, in order to accurately count out the mould actual service life。
6. Circular mould must be stored in a dry and clean place, if stored in damp places, will cause corrosion on the mould holes ,and reduce the mould service life or no feed discharge