Revision – Maintenance

Reliner

Reliner is an operation to be carried out when the steel completed its life-span in order not to cause production loss and damage other parts before any damage occurs on the liner (cracks – breaks etc.) The containers to be revised are controlled in terms of their hardness. After the liner bloating rate is determined, the container is brought to desired temperature in a controlled manner. The used liner is removed by cooling down with the help of liquid nitrogen. The taper and bloating formed on the inner diameter of the container mantle is cleaned in lathe. Besides visual inspection, penetrant surface crack control is made on the mantle during turning. After turning process, the mantle is sensitively rectified. Thus, desired linearity of container mantle is obtained. Rectified and crack controlled container mantle is heated in a controlled way and the new liner is transferred. Shrink fitted mantle and the liner are cooled down in a controlled way and then the inner diameter is controlled. Change on the inner diameter of the liner after shrink fit is brought to desired dimensions by honing according to extrusion ratio and container dimension.

Head Cleaning

Head cleaning is a periodical maintenance that must be carried out in order to eliminate the damages forming due to various reasons and to prevent the damage to grow in the part of container that touches to the die. This help to lengthen the life-span of liner.

Head Cleaning

This is the maintenance which must periodically carried out in order to eliminate the damages (bloating-taper-corrosion) forming on the inner diameter of the liner during press and to prevent the damages to grow. This help to lengthen the life-span of liner. The damage rate of the container that came to clean the inner diameter of the liner is determined. After the inner of the liner is cleaned from residues (Aluminium-Brass-Copper etc.) on the turning, a visual inspection on the surface of liner is made with the help of penetrant primarily with eye. Cleaning dimension of the liner that doesn’t have a crack on the surface is determined and notified to the customer. For the dimensions beyond expectations, the approval of the customer is obtained and the process is continued or the expired liner is reported to the customer.

Dimension Controlled Rectifying - Cleaning of the Liner Inner Diameter

Containers on which the cartridge heater application or resistant change will carried out are technically controlled if they are suitable for resistance application process. Resistance application design is made on computer environment for the containers that are suitable for resistance application process. Ideal power calculation is made according to the container dimensions and heating time. Resistance section number is decided according to container dimensions. Surface of resistance holes are drilled at the precision of 0,4 – 0,8 Ra. All holes are drilled at the same precision and quality. Auxiliary materials used for resistance assembly are prepared and assembled. The resistance which are assembled are tested for four hours. Container resistances become ready to dispatch to the customer after the test.

Dummy Block Revision – Spare Part Dummy block

Running clearance, ring diameter and hardness is controlled. Required adaptations are made on existing parts while the parts that need to be replaced are being replaced. 

Cassette – Slide Bar Revision

Damaged securing tabs are replaced by the new ones. Brasses that are corroded in a way not to actuate its duty as bedding at the cassette slide bar system are replaced with the new ones that are produced in the ideal dimensions. Bottom slide bar revision Top slide bar revision

Stem Revision – Maintenance

This maintenance is required to be carried out between formerly specified periods for the stems that are still usable. Flexure, expansion and contortion controls are made with the help of comparator at turning machine. Damages that are within the tolerance level are corrected while damages that are not within the tolerance level are reported as expired. 

Hidrolik Piston Revizyonu

Damages that form on the piston mantle due to any reason are eliminated with the help of honing. Expired sealing elements are replaced. Damaged piston parts are designed and taken into production according to existing situation.