Purpose
- machine is designed for lapping (polishing) of the flat sealing surfaces of the gate valve wedges, valve spools, and сhristmas-tree wedges;
- special-configuration is used for lapping the end-seal rings.
Types of machined parts
- wedges of the gate and christmas-tree valves;
- valve (global valve) spools;
- end-seal rings of the pumps;
- other flat-surface parts.
Lapping-plate diameter
- Ø 620 mm (24″). For the wedges of the gate valves DN 50…150 mm (2...6″).
|
Parameter |
SP-400 |
|
Nominal diameter of the valve, DN, mm (″) |
10...100 (3/8...4) |
|
Lapping-plate diameter, mm (″) |
380 (14) |
|
Number of cartridges |
3 |
|
Internal diameter of the cartridges, mm (″) |
140 (5 1/2) |
|
Machined-surface roughness, μm |
0,08...0,1 |
|
Machined-surface nonflatness (accuracy), mkm |
0,6 |
|
Lapping-plate speed, rpm |
10...70 |
|
Installed power, kW |
0,4 |
|
Electric power supply, V/Hz |
400/50 (480/60*) |
|
Overall dimensions (LхWхH), mm (″) |
685х650х480 (26x25x18) |
|
Weight, kg |
122 |
- Each point of the lapped surface of the parts makes complex plane-parallel motion on the lapping-plate surface.
- The machines are equipped with the polishing-compound supply device.
- The spent compound is collected in a special tank.
- The lapping time is automatically controlled by the timer.
- The machines are equipped with the smooth start device with the lapping-plate speed adjustment.
- The machines are designed so that the lapping disc can be adjusted during its operation.
