Instruction of Tungsten Carbide Corrugated Slitter Blades
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Author : Ruby C.
Update time : 2020-07-29 12:27:56
Tungsten carbide corrugated slitter blades,with quite high wear resistance, could effectively improve the cutting quality of corrugated cardboard and extend the service life of carbide blades if used properly, but it’ll break easily if conducted improperly because it’s very brittle too.
Here are some tips operators must pay high attention to: 1.Material Selection: Tungsten carbide material is with high hardness and very brittle,any outer impact and friction are unbearable,so they are not recommended to use on facility with poor accuracy.HSS corrugated blades are suggested for those facilities.
2.Handling and Storage: please be very careful when carry these tungsten carbide circular discs,And when using the blades, please handle it gently, lay it straightly, and do not collide it with other hard objects such as steel items.
3.Preparation before installing the tungsten carbide corrugated knife. ---Inspection of toolholder: Please ensure the axial and radial runout qualified,and ensure the surface that touch with tungsten carbide circular blades is clean and without scratches, The surface can only be high on the outside and low on the inside,or else it will put additional stress on the blade,and dirt and other objects on the surface are not allowed. ---When installing the knife, the shaft and inner hole of the blade need fit properly, if they fit too tightly, the blade is very easy to break when the flange cover is tightened with screws. ---With slitting and creasing machines equipped with a lubrication system, and the blade must be placed in the center of the lubrication groove, there must be a gap between the blade and the lubrication groove where friction occurs. Once the tool seat or lubrication groove becomes loose, the blade will contact the lubrication groove and breakage happens. ---Corrugated cardboard holder:In order to cut corrugated cardboard, the TC knife must pass 5-10 mm through the groove surface of the bracket. Please check if there is any gap to ensure the installing properly. ---Please check if there are nicks, cracks, and dried glue on the blade of the TC thin knife? clean the paper cuts in the tray slot and if there is glue, it must be cleaned.
4.Installing of Cemented carbide disc knife: ---The operator needs to carefully place the TC thin knife on the knife holder after inspection, and start to tighten the screws diagonally with uniform force alternately. ---After the TC thin knife is installed, the operator should slowly rotate the blade to check the following items: radial and axial runout, ensure the carbide blade is rightly centering between the lubrication groove and the supporting roller groove, and the centering between the two grinding wheels .
5.Regrinding of TC circular blades ---Inspection of the diamond grinder including diamond wheels’ runout,the spindle and rotation. ---Adjust the distance between diamond wheels and tungsten carbide blades in case of any breakage. ---To match the grinding angle with diamond wheels assembled angle to ensure symmetry. ---To choose the correct diamond wheels’ grits,usually it is #180/240,corresponds to D76 and D91. ---To check the shaft rotation from time to time,because low quality shaft wears quickly and always hear the carbide blades. ---Interval time of regrinding is decided by the blades’ sharpness and cutting quality. Too often regrinding will shorten the life span of tungsten carbide disc blades. When there’s cracks like TCT saw, the tungsten carbide slitter must be replaced. ---Operator need check all the tips with unqualified cutting edge after regrinding.
6.Operations of TC corrugated knife: it is strictly prohibited to pull the corrugated cardboard when the carbide thin knife is working,try to pay high attention to the blades rotation,if the blade breaks once the machine starts, it must be related with improper installing,please check all the tips and start again.
7.Safety: Please read the instruction before conducting the blades, during the operating process breakage Happens due to improper operation, Operators should not stand in front of the blade during operation or adjustment (especially for sharpening the knife) to prevent from being hurt by the breakage pieces,please wear gloves when processing with blades.
