5
STAGES
OF REPAIR TECHNOLOGY
Stage 1
The technology requires disassembly ONLY of defective part in order to get access to reconditioned opening.
Stage 2
The next stage is mounting (with welding or any other applicable way) of center alignment kit. The kit, depending on the type and layout of reconditioned part, is mounted either on both sides of the opening, or in case of simultaneous reconditioning of several coaxial openings, on the sides of those openings.
By virtue of its design, center alignment kit allows 3-axle adjustment of boring bar position, which passes through thee whole width of reconditioned surface. Boring bar alignment is performed with special measuring devices basing on the least worn-out opening or other basis surfaces.
Stage 3
Saddles are put at the aligned boring bar. After fine-tuning of bolts and mounts, saddles are being welded to the reconditioned part. Then the center alignment kit needs to be removed.
The machine is firmly mounted on one of the saddles. Machine’s weight does not affect the accuracy of executed technological operations.
After installing the cutting tool into the boring bar, the opening is being bored until the ovality is eliminated or until reaching the required diameter.
Stage 4
To perform welding thee boring bar is being replaced with a special dielectric shaft with welding head. The shaft is being connected to a semiautomatic welding machine with a special cable.
The gas mix used consists of 80% Argon and 20% CO2 (carbon dioxide). The mix is feeded to welding machine either directly through a pressure reducer or via a gas mixer from two separate bottles of Ar and CO2.
Surfacing of a required number of layers of metal is carried out in automatic mode with a semiautomatic welder while the machine ensures rotation and feeding of welding head. The firmness of welded surface is 25-30 HRC depending on welding current and gas mixture.
Stage 5
After the surfacing and removing of welding shaft, the boring bar is put back. After the rough boring an actual diameter is measured and the cutting tool is adjusted to the required diameter with a special digital indicator.
Then the finish boring is performed. After the control measuring, the machine is dismounted and the part is cleaned from welding marks.
The standard kit includes everything required for the operations except for welding machine and gas equipment (bottles, mixers, reducers). We recommend using of well-known brands 3-phase semiautomatic welding machines, but theoretically any semiautomatic welder may be used as long as it meets the requirements of CDF=100% at welding current 100A and stable continuous feeding of welding wire without jamming.
Advantages
of technology and equipment
by AVANTECHNO
1. UP TO 90% TIME AND COST SAVING
Significant reduction of labor, material and financial costs for repair and reconditioning works:
- no need for full dismounting and transportation of defective assemblies and units to a repair shop, reduction or complete elimination of transportation costs which constitute the largest cost proportion of the estimate for the repair of large-sized machinery and equipment
- significant reduction of the total repair time and of machinery downtimes
- reduced involvement of repair staff, optimized human resource distribution
2. SIMPLE OPERATION AND SUPPORT
- training in the operation of the complex and in state-of-the-art machinery repair technology
- fast supply of spare parts and consumables
- engineering and consulting support
3. RELIABLE AND FAILURE-FREE OPERATION
- place of origin: European Union
- warranty period: 24 months
- consistency of operation parameters
- consistency of operation parameters
- possibility of operation under extreme conditions
Contacts
«AVANTECHNO-BG» LTD
6, «Graf Ignatiev» str., 8800 Sliven, Bulgaria
